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Volumn 23, Issue 9, 2013, Pages 421-432

Cellular origin of Kaposi's sarcoma and Kaposi's sarcoma-associated herpesvirus-induced cell reprogramming

Author keywords

Cell differentiation; Cell plasticity; Endothelial cells; Kaposi's sarcoma; KSHV HHV8; Oncogenic viruses

Indexed keywords

ANGIOGENIN; ANGIOPOIETIN; CYCLOOXYGENASE 2; FIBROBLAST GROWTH FACTOR; FLICE INHIBITORY PROTEIN; G PROTEIN COUPLED RECEPTOR; GAMMA INTERFERON; GRANULOCYTE MACROPHAGE COLONY STIMULATING FACTOR; HEMOSIDERIN; INTERLEUKIN 1; INTERLEUKIN 6; INTERLEUKIN 8; JANUS KINASE 2; MONOCYTE CHEMOTACTIC PROTEIN 1; PLATELET DERIVED GROWTH FACTOR; STAT3 PROTEIN; TRANSFORMING GROWTH FACTOR BETA; TUMOR NECROSIS FACTOR ALPHA; VASCULOTROPIN; VIRUS LARGE T ANTIGEN;

EID: 84882847653     PISSN: 09628924     EISSN: 18793088     Source Type: Journal    
DOI: 10.1016/j.tcb.2013.04.001     Document Type: Review
Times cited : (52)

References (108)
  • 1
    • 34447595241 scopus 로고
    • Idiopathisches multiples Pigmentsarkomen der haut
    • (in German)
    • Kaposi M. Idiopathisches multiples Pigmentsarkomen der haut. Arch. Dermatol. Syph. 1872, 4:265-273. (in German).
    • (1872) Arch. Dermatol. Syph. , vol.4 , pp. 265-273
    • Kaposi, M.1
  • 2
    • 0019872049 scopus 로고
    • Centers for Disease Control (CDC) Kaposi's sarcoma and Pneumocystis pneumonia among homosexual men--New York City and California
    • Centers for Disease Control (CDC) Kaposi's sarcoma and Pneumocystis pneumonia among homosexual men--New York City and California. MMWR Morb. Mortal. Wkly. Rep. 1981, 30:305-308.
    • (1981) MMWR Morb. Mortal. Wkly. Rep. , vol.30 , pp. 305-308
  • 3
    • 0019402154 scopus 로고
    • A preliminary communication on extensively disseminated Kaposi's sarcoma in young homosexual men
    • Gottlieb G.J., et al. A preliminary communication on extensively disseminated Kaposi's sarcoma in young homosexual men. Am. J. Dermatopathol. 1981, 3:111-114.
    • (1981) Am. J. Dermatopathol. , vol.3 , pp. 111-114
    • Gottlieb, G.J.1
  • 4
    • 0029557641 scopus 로고
    • Epidemiology of classic Kaposi's sarcoma, with special reference to Mediterranean population
    • Franceschi S., Geddes M. Epidemiology of classic Kaposi's sarcoma, with special reference to Mediterranean population. Tumori 1995, 81:308-314.
    • (1995) Tumori , vol.81 , pp. 308-314
    • Franceschi, S.1    Geddes, M.2
  • 5
    • 73849156425 scopus 로고
    • Geographical and racial differences in the frequency of Kaposi's sarcoma as evidence of environmental or genetic causes
    • Oettle A.G. Geographical and racial differences in the frequency of Kaposi's sarcoma as evidence of environmental or genetic causes. Acta Unio Int. Contra Cancrum 1962, 18:330-363.
    • (1962) Acta Unio Int. Contra Cancrum , vol.18 , pp. 330-363
    • Oettle, A.G.1
  • 6
    • 0018670619 scopus 로고
    • Kaposi's sarcoma in recipients of renal transplants
    • Harwood A.R., et al. Kaposi's sarcoma in recipients of renal transplants. Am. J. Med. 1979, 67:759-765.
    • (1979) Am. J. Med. , vol.67 , pp. 759-765
    • Harwood, A.R.1
  • 7
    • 0019825980 scopus 로고
    • Disseminated Kaposi's sarcoma syndrome in young homosexual men
    • Friedman-Kien A.E. Disseminated Kaposi's sarcoma syndrome in young homosexual men. J. Am. Acad. Dermatol. 1981, 5:468-471.
    • (1981) J. Am. Acad. Dermatol. , vol.5 , pp. 468-471
    • Friedman-Kien, A.E.1
  • 8
    • 0028588064 scopus 로고
    • Identification of herpesvirus-like DNA sequences in AIDS-associated Kaposi's sarcoma
    • Chang Y., et al. Identification of herpesvirus-like DNA sequences in AIDS-associated Kaposi's sarcoma. Science 1994, 266:1865-1869.
    • (1994) Science , vol.266 , pp. 1865-1869
    • Chang, Y.1
  • 9
    • 0034969034 scopus 로고    scopus 로고
    • Biology of Kaposi's sarcoma
    • Ensoli B., et al. Biology of Kaposi's sarcoma. Eur. J. Cancer 2001, 37:1251-1269.
    • (2001) Eur. J. Cancer , vol.37 , pp. 1251-1269
    • Ensoli, B.1
  • 10
    • 16044367614 scopus 로고    scopus 로고
    • Prevalence of Kaposi's sarcoma associated herpesvirus infection measured by antibodies to recombinant capsid protein and latent immunofluorescence antigen
    • Simpson G.R., et al. Prevalence of Kaposi's sarcoma associated herpesvirus infection measured by antibodies to recombinant capsid protein and latent immunofluorescence antigen. Lancet 1996, 348:1133-1138.
    • (1996) Lancet , vol.348 , pp. 1133-1138
    • Simpson, G.R.1
  • 11
    • 0029817693 scopus 로고    scopus 로고
    • The seroepidemiology of human herpesvirus 8 (Kaposi's sarcoma-associated herpesvirus): distribution of infection in KS risk groups and evidence for sexual transmission
    • Kedes D.H., et al. The seroepidemiology of human herpesvirus 8 (Kaposi's sarcoma-associated herpesvirus): distribution of infection in KS risk groups and evidence for sexual transmission. Nat. Med. 1996, 2:918-924.
    • (1996) Nat. Med. , vol.2 , pp. 918-924
    • Kedes, D.H.1
  • 12
    • 0033578030 scopus 로고    scopus 로고
    • Antibodies against human herpesvirus 8 in black South African patients with cancer
    • Sitas F., et al. Antibodies against human herpesvirus 8 in black South African patients with cancer. N. Engl. J. Med. 1999, 340:1863-1871.
    • (1999) N. Engl. J. Med. , vol.340 , pp. 1863-1871
    • Sitas, F.1
  • 13
    • 0036561909 scopus 로고    scopus 로고
    • AIDS-related malignancies
    • Boshoff C., Weiss R. AIDS-related malignancies. Nat. Rev. Cancer 2002, 2:373-382.
    • (2002) Nat. Rev. Cancer , vol.2 , pp. 373-382
    • Boshoff, C.1    Weiss, R.2
  • 14
    • 84869492886 scopus 로고    scopus 로고
    • Global burden of cancer in 2008: a systematic analysis of disability-adjusted life-years in 12 world regions
    • Soerjomataram I., et al. Global burden of cancer in 2008: a systematic analysis of disability-adjusted life-years in 12 world regions. Lancet 2012, 380:1840-1850.
    • (2012) Lancet , vol.380 , pp. 1840-1850
    • Soerjomataram, I.1
  • 15
    • 0029069445 scopus 로고
    • Kaposi's sarcoma-associated herpesvirus-like DNA sequences in AIDS-related body-cavity-based lymphomas
    • Cesarman E., et al. Kaposi's sarcoma-associated herpesvirus-like DNA sequences in AIDS-related body-cavity-based lymphomas. N. Engl. J. Med. 1995, 332:1186-1191.
    • (1995) N. Engl. J. Med. , vol.332 , pp. 1186-1191
    • Cesarman, E.1
  • 16
    • 0029166033 scopus 로고
    • Kaposi's sarcoma-associated herpesvirus-like DNA sequences in multicentric Castleman's disease
    • Soulier J., et al. Kaposi's sarcoma-associated herpesvirus-like DNA sequences in multicentric Castleman's disease. Blood 1995, 86:1276-1280.
    • (1995) Blood , vol.86 , pp. 1276-1280
    • Soulier, J.1
  • 17
    • 0032493448 scopus 로고    scopus 로고
    • Evidence for multiclonality in multicentric Kaposi's sarcoma
    • Gill P.S., et al. Evidence for multiclonality in multicentric Kaposi's sarcoma. Proc. Natl. Acad. Sci. U.S.A. 1998, 95:8257-8261.
    • (1998) Proc. Natl. Acad. Sci. U.S.A. , vol.95 , pp. 8257-8261
    • Gill, P.S.1
  • 18
    • 34547818237 scopus 로고    scopus 로고
    • Evidence for a multiclonal origin of multicentric advanced lesions of Kaposi sarcoma
    • Duprez R., et al. Evidence for a multiclonal origin of multicentric advanced lesions of Kaposi sarcoma. J. Natl. Cancer Inst. 2007, 99:1086-1094.
    • (2007) J. Natl. Cancer Inst. , vol.99 , pp. 1086-1094
    • Duprez, R.1
  • 19
    • 25844465638 scopus 로고    scopus 로고
    • Spindle cells and their role in Kaposi's sarcoma
    • Gessain A., Duprez R. Spindle cells and their role in Kaposi's sarcoma. Int. J. Biochem. Cell Biol. 2005, 37:2457-2465.
    • (2005) Int. J. Biochem. Cell Biol. , vol.37 , pp. 2457-2465
    • Gessain, A.1    Duprez, R.2
  • 20
    • 77957121811 scopus 로고    scopus 로고
    • Kaposi's sarcoma and its associated herpesvirus
    • Mesri E.A., et al. Kaposi's sarcoma and its associated herpesvirus. Nat. Rev. Cancer 2010, 10:707-719.
    • (2010) Nat. Rev. Cancer , vol.10 , pp. 707-719
    • Mesri, E.A.1
  • 21
    • 0028835074 scopus 로고
    • Kaposi's sarcoma-associated herpesvirus infects endothelial and spindle cells
    • Boshoff C., et al. Kaposi's sarcoma-associated herpesvirus infects endothelial and spindle cells. Nat. Med. 1995, 1:1274-1278.
    • (1995) Nat. Med. , vol.1 , pp. 1274-1278
    • Boshoff, C.1
  • 22
    • 10544236112 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus gene expression in endothelial (spindle) tumor cells
    • Staskus K.A., et al. Kaposi's sarcoma-associated herpesvirus gene expression in endothelial (spindle) tumor cells. J. Virol. 1997, 71:715-719.
    • (1997) J. Virol. , vol.71 , pp. 715-719
    • Staskus, K.A.1
  • 23
    • 0028944254 scopus 로고
    • Herpesvirus-like DNA sequences in patients with Mediterranean Kaposi's sarcoma
    • Dupin N., et al. Herpesvirus-like DNA sequences in patients with Mediterranean Kaposi's sarcoma. Lancet 1995, 345:761-762.
    • (1995) Lancet , vol.345 , pp. 761-762
    • Dupin, N.1
  • 24
    • 0021870927 scopus 로고
    • Evidence for the origin of Kaposi's sarcoma from lymphatic endothelium
    • Beckstead J.H., et al. Evidence for the origin of Kaposi's sarcoma from lymphatic endothelium. Am. J. Pathol. 1985, 119:294-300.
    • (1985) Am. J. Pathol. , vol.119 , pp. 294-300
    • Beckstead, J.H.1
  • 25
    • 20244382534 scopus 로고
    • Oral Kaposi's sarcoma: a 10-year retrospective histopathologic study
    • Regezi J.A., et al. Oral Kaposi's sarcoma: a 10-year retrospective histopathologic study. J. Oral Pathol. Med. 1993, 22:292-297.
    • (1993) J. Oral Pathol. Med. , vol.22 , pp. 292-297
    • Regezi, J.A.1
  • 26
    • 0023923984 scopus 로고
    • Kaposi's sarcoma: evidence supporting its origin from the lymphatic system
    • Dorfman R.F. Kaposi's sarcoma: evidence supporting its origin from the lymphatic system. Lymphology 1988, 21:45-52.
    • (1988) Lymphology , vol.21 , pp. 45-52
    • Dorfman, R.F.1
  • 27
    • 13044278309 scopus 로고    scopus 로고
    • Distribution of human herpesvirus-8 latently infected cells in Kaposi's sarcoma, multicentric Castleman's disease, and primary effusion lymphoma
    • Dupin N., et al. Distribution of human herpesvirus-8 latently infected cells in Kaposi's sarcoma, multicentric Castleman's disease, and primary effusion lymphoma. Proc. Natl. Acad. Sci. U.S.A. 1999, 96:4546-4551.
    • (1999) Proc. Natl. Acad. Sci. U.S.A. , vol.96 , pp. 4546-4551
    • Dupin, N.1
  • 28
    • 0033402190 scopus 로고    scopus 로고
    • Vascular endothelial growth factor-C (VEGF-C) and its receptors KDR and flt-4 are expressed in AIDS-associated Kaposi's sarcoma
    • Skobe M., et al. Vascular endothelial growth factor-C (VEGF-C) and its receptors KDR and flt-4 are expressed in AIDS-associated Kaposi's sarcoma. J. Invest. Dermatol. 1999, 113:1047-1053.
    • (1999) J. Invest. Dermatol. , vol.113 , pp. 1047-1053
    • Skobe, M.1
  • 29
    • 0033600760 scopus 로고    scopus 로고
    • Vascular endothelial growth factor-C stimulates the migration and proliferation of Kaposi's sarcoma cells
    • Marchio S., et al. Vascular endothelial growth factor-C stimulates the migration and proliferation of Kaposi's sarcoma cells. J. Biol. Chem. 1999, 274:27617-27622.
    • (1999) J. Biol. Chem. , vol.274 , pp. 27617-27622
    • Marchio, S.1
  • 30
    • 3042738138 scopus 로고    scopus 로고
    • Kaposi sarcoma herpesvirus-induced cellular reprogramming contributes to the lymphatic endothelial gene expression in Kaposi sarcoma
    • Wang H.W., et al. Kaposi sarcoma herpesvirus-induced cellular reprogramming contributes to the lymphatic endothelial gene expression in Kaposi sarcoma. Nat. Genet. 2004, 36:687-693.
    • (2004) Nat. Genet. , vol.36 , pp. 687-693
    • Wang, H.W.1
  • 31
    • 4544388334 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus infection of blood endothelial cells induces lymphatic differentiation
    • Carroll P.A., et al. Kaposi's sarcoma-associated herpesvirus infection of blood endothelial cells induces lymphatic differentiation. Virology 2004, 328:7-18.
    • (2004) Virology , vol.328 , pp. 7-18
    • Carroll, P.A.1
  • 32
    • 3042780203 scopus 로고    scopus 로고
    • Lymphatic reprogramming of blood vascular endothelium by Kaposi sarcoma-associated herpesvirus
    • Hong Y.K., et al. Lymphatic reprogramming of blood vascular endothelium by Kaposi sarcoma-associated herpesvirus. Nat. Genet. 2004, 36:683-685.
    • (2004) Nat. Genet. , vol.36 , pp. 683-685
    • Hong, Y.K.1
  • 33
    • 50149115756 scopus 로고    scopus 로고
    • Activation of Akt through gp130 receptor signaling is required for Kaposi's sarcoma-associated herpesvirus-induced lymphatic reprogramming of endothelial cells
    • Morris V.A., et al. Activation of Akt through gp130 receptor signaling is required for Kaposi's sarcoma-associated herpesvirus-induced lymphatic reprogramming of endothelial cells. J. Virol. 2008, 82:8771-8779.
    • (2008) J. Virol. , vol.82 , pp. 8771-8779
    • Morris, V.A.1
  • 34
    • 34249334641 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus-encoded interleukin-6 and G-protein-coupled receptor regulate angiopoietin-2 expression in lymphatic endothelial cells
    • Vart R.J., et al. Kaposi's sarcoma-associated herpesvirus-encoded interleukin-6 and G-protein-coupled receptor regulate angiopoietin-2 expression in lymphatic endothelial cells. Cancer Res. 2007, 67:4042-4051.
    • (2007) Cancer Res. , vol.67 , pp. 4042-4051
    • Vart, R.J.1
  • 35
    • 58149526804 scopus 로고    scopus 로고
    • Intracellular signaling mechanisms and activities of human herpesvirus 8 interleukin-6
    • Chen D., et al. Intracellular signaling mechanisms and activities of human herpesvirus 8 interleukin-6. J. Virol. 2009, 83:722-733.
    • (2009) J. Virol. , vol.83 , pp. 722-733
    • Chen, D.1
  • 36
    • 84860833381 scopus 로고    scopus 로고
    • The KSHV viral IL-6 homolog is sufficient to induce blood to lymphatic endothelial cell differentiation
    • Morris V.A., et al. The KSHV viral IL-6 homolog is sufficient to induce blood to lymphatic endothelial cell differentiation. Virology 2012, 428:112-120.
    • (2012) Virology , vol.428 , pp. 112-120
    • Morris, V.A.1
  • 37
    • 35348962397 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus
    • Lippincott Williams & Wilkins, D.M.H. Knipe, M. Peter (Eds.)
    • Ganem D. Kaposi's sarcoma-associated herpesvirus. Fields Virology 2007, 2847-2888. Lippincott Williams & Wilkins. 5th edn. D.M.H. Knipe, M. Peter (Eds.).
    • (2007) Fields Virology , pp. 2847-2888
    • Ganem, D.1
  • 38
    • 77958124039 scopus 로고    scopus 로고
    • Kaposin-B enhances the PROX1 mRNA stability during lymphatic reprogramming of vascular endothelial cells by Kaposi's sarcoma herpes virus
    • Yoo J., et al. Kaposin-B enhances the PROX1 mRNA stability during lymphatic reprogramming of vascular endothelial cells by Kaposi's sarcoma herpes virus. PLoS Pathog. 2010, 6:e1001046.
    • (2010) PLoS Pathog. , vol.6
    • Yoo, J.1
  • 39
    • 13244287674 scopus 로고    scopus 로고
    • The kaposin B protein of KSHV activates the p38/MK2 pathway and stabilizes cytokine mRNAs
    • McCormick C., Ganem D. The kaposin B protein of KSHV activates the p38/MK2 pathway and stabilizes cytokine mRNAs. Science 2005, 307:739-741.
    • (2005) Science , vol.307 , pp. 739-741
    • McCormick, C.1    Ganem, D.2
  • 40
    • 84864051822 scopus 로고    scopus 로고
    • Opposing regulation of PROX1 by interleukin-3 receptor and NOTCH directs differential host cell fate reprogramming by Kaposi sarcoma herpes virus
    • Yoo J., et al. Opposing regulation of PROX1 by interleukin-3 receptor and NOTCH directs differential host cell fate reprogramming by Kaposi sarcoma herpes virus. PLoS Pathog. 2012, 8:e1002770.
    • (2012) PLoS Pathog. , vol.8
    • Yoo, J.1
  • 41
    • 84869236286 scopus 로고    scopus 로고
    • Lymphatic reprogramming by Kaposi sarcoma herpes virus promotes the oncogenic activity of the virus-encoded G-protein-coupled receptor
    • Aguilar B., et al. Lymphatic reprogramming by Kaposi sarcoma herpes virus promotes the oncogenic activity of the virus-encoded G-protein-coupled receptor. Cancer Res. 2012, 72:5833-5842.
    • (2012) Cancer Res. , vol.72 , pp. 5833-5842
    • Aguilar, B.1
  • 42
    • 17244375710 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus expresses an array of viral microRNAs in latently infected cells
    • Cai X., et al. Kaposi's sarcoma-associated herpesvirus expresses an array of viral microRNAs in latently infected cells. Proc. Natl. Acad. Sci. U.S.A. 2005, 102:5570-5575.
    • (2005) Proc. Natl. Acad. Sci. U.S.A. , vol.102 , pp. 5570-5575
    • Cai, X.1
  • 43
    • 21644438873 scopus 로고    scopus 로고
    • Cloning and identification of a microRNA cluster within the latency-associated region of Kaposi's sarcoma-associated herpesvirus
    • Samols M.A., et al. Cloning and identification of a microRNA cluster within the latency-associated region of Kaposi's sarcoma-associated herpesvirus. J. Virol. 2005, 79:9301-9305.
    • (2005) J. Virol. , vol.79 , pp. 9301-9305
    • Samols, M.A.1
  • 44
    • 75149196431 scopus 로고    scopus 로고
    • KSHV-encoded miRNAs target MAF to induce endothelial cell reprogramming
    • Hansen A., et al. KSHV-encoded miRNAs target MAF to induce endothelial cell reprogramming. Genes Dev. 2010, 24:195-205.
    • (2010) Genes Dev. , vol.24 , pp. 195-205
    • Hansen, A.1
  • 45
    • 20844463414 scopus 로고    scopus 로고
    • Identification of microRNAs of the herpesvirus family
    • Pfeffer S., et al. Identification of microRNAs of the herpesvirus family. Nat. Methods 2005, 2:269-276.
    • (2005) Nat. Methods , vol.2 , pp. 269-276
    • Pfeffer, S.1
  • 46
    • 58749095112 scopus 로고    scopus 로고
    • Viral and cellular messenger RNA targets of viral microRNAs
    • Cullen B.R. Viral and cellular messenger RNA targets of viral microRNAs. Nature 2009, 457:421-425.
    • (2009) Nature , vol.457 , pp. 421-425
    • Cullen, B.R.1
  • 47
    • 0036840138 scopus 로고    scopus 로고
    • Prox1 is a master control gene in the program specifying lymphatic endothelial cell fate
    • Hong Y.K., et al. Prox1 is a master control gene in the program specifying lymphatic endothelial cell fate. Dev. Dyn. 2002, 225:351-357.
    • (2002) Dev. Dyn. , vol.225 , pp. 351-357
    • Hong, Y.K.1
  • 48
    • 18544386859 scopus 로고    scopus 로고
    • Lymphatic endothelial reprogramming of vascular endothelial cells by the Prox-1 homeobox transcription factor
    • Petrova T.V., et al. Lymphatic endothelial reprogramming of vascular endothelial cells by the Prox-1 homeobox transcription factor. EMBO J. 2002, 21:4593-4599.
    • (2002) EMBO J. , vol.21 , pp. 4593-4599
    • Petrova, T.V.1
  • 49
    • 38449113264 scopus 로고    scopus 로고
    • Multiple mechanisms and functions of maf transcription factors in the regulation of tissue-specific genes
    • Kataoka K. Multiple mechanisms and functions of maf transcription factors in the regulation of tissue-specific genes. J. Biochem. 2007, 141:775-781.
    • (2007) J. Biochem. , vol.141 , pp. 775-781
    • Kataoka, K.1
  • 50
    • 50249164838 scopus 로고    scopus 로고
    • A new MAFia in cancer
    • Eychene A., et al. A new MAFia in cancer. Nat. Rev. Cancer 2008, 8:683-693.
    • (2008) Nat. Rev. Cancer , vol.8 , pp. 683-693
    • Eychene, A.1
  • 51
    • 1642442576 scopus 로고    scopus 로고
    • Mafs, Prox1, and Pax6 can regulate chicken betaB1-crystallin gene expression
    • Cui W., et al. Mafs, Prox1, and Pax6 can regulate chicken betaB1-crystallin gene expression. J. Biol. Chem. 2004, 279:11088-11095.
    • (2004) J. Biol. Chem. , vol.279 , pp. 11088-11095
    • Cui, W.1
  • 52
    • 0033967140 scopus 로고    scopus 로고
    • Regulation of mouse lens fiber cell development and differentiation by the Maf gene
    • Ring B.Z., et al. Regulation of mouse lens fiber cell development and differentiation by the Maf gene. Development 2000, 127:307-317.
    • (2000) Development , vol.127 , pp. 307-317
    • Ring, B.Z.1
  • 53
    • 0033616621 scopus 로고    scopus 로고
    • Requirement for the c-Maf transcription factor in crystallin gene regulation and lens development
    • Kim J.I., et al. Requirement for the c-Maf transcription factor in crystallin gene regulation and lens development. Proc. Natl. Acad. Sci. U.S.A. 1999, 96:3781-3785.
    • (1999) Proc. Natl. Acad. Sci. U.S.A. , vol.96 , pp. 3781-3785
    • Kim, J.I.1
  • 54
    • 0033516565 scopus 로고    scopus 로고
    • Regulation of lens fiber cell differentiation by transcription factor c-Maf
    • Kawauchi S., et al. Regulation of lens fiber cell differentiation by transcription factor c-Maf. J. Biol. Chem. 1999, 274:19254-19260.
    • (1999) J. Biol. Chem. , vol.274 , pp. 19254-19260
    • Kawauchi, S.1
  • 55
    • 0033018615 scopus 로고    scopus 로고
    • Prox1 function is crucial for mouse lens-fibre elongation
    • Wigle J.T., et al. Prox1 function is crucial for mouse lens-fibre elongation. Nat. Genet. 1999, 21:318-322.
    • (1999) Nat. Genet. , vol.21 , pp. 318-322
    • Wigle, J.T.1
  • 56
    • 0037007216 scopus 로고    scopus 로고
    • An essential role for Prox1 in the induction of the lymphatic endothelial cell phenotype
    • Wigle J.T., et al. An essential role for Prox1 in the induction of the lymphatic endothelial cell phenotype. EMBO J. 2002, 21:1505-1513.
    • (2002) EMBO J. , vol.21 , pp. 1505-1513
    • Wigle, J.T.1
  • 57
    • 53349178722 scopus 로고    scopus 로고
    • In vivo reprogramming of adult pancreatic exocrine cells to beta-cells
    • Zhou Q., et al. In vivo reprogramming of adult pancreatic exocrine cells to beta-cells. Nature 2008, 455:627-632.
    • (2008) Nature , vol.455 , pp. 627-632
    • Zhou, Q.1
  • 58
    • 83655190739 scopus 로고    scopus 로고
    • KSHV-initiated notch activation leads to membrane-type-1 matrix metalloproteinase-dependent lymphatic endothelial-to-mesenchymal transition
    • Cheng F., et al. KSHV-initiated notch activation leads to membrane-type-1 matrix metalloproteinase-dependent lymphatic endothelial-to-mesenchymal transition. Cell Host Microbe 2011, 10:577-590.
    • (2011) Cell Host Microbe , vol.10 , pp. 577-590
    • Cheng, F.1
  • 59
    • 33846195498 scopus 로고    scopus 로고
    • Biology of bone marrow-derived endothelial cell precursors
    • Schatteman G.C., et al. Biology of bone marrow-derived endothelial cell precursors. Am. J. Physiol. Heart Circ. Physiol. 2007, 292:H1-H18.
    • (2007) Am. J. Physiol. Heart Circ. Physiol. , vol.292
    • Schatteman, G.C.1
  • 60
    • 0033529618 scopus 로고    scopus 로고
    • Bone marrow origin of endothelial progenitor cells responsible for postnatal vasculogenesis in physiological and pathological neovascularization
    • Asahara T., et al. Bone marrow origin of endothelial progenitor cells responsible for postnatal vasculogenesis in physiological and pathological neovascularization. Circ. Res. 1999, 85:221-228.
    • (1999) Circ. Res. , vol.85 , pp. 221-228
    • Asahara, T.1
  • 61
    • 0028032582 scopus 로고
    • Identification and culture of Kaposi's sarcoma-like spindle cells from the peripheral blood of human immunodeficiency virus-1-infected individuals and normal controls
    • Browning P.J., et al. Identification and culture of Kaposi's sarcoma-like spindle cells from the peripheral blood of human immunodeficiency virus-1-infected individuals and normal controls. Blood 1994, 84:2711-2720.
    • (1994) Blood , vol.84 , pp. 2711-2720
    • Browning, P.J.1
  • 62
    • 45149105263 scopus 로고    scopus 로고
    • Peripheral blood endothelial progenitors as potential reservoirs of Kaposi's sarcoma-associated herpesvirus
    • Della Bella S., et al. Peripheral blood endothelial progenitors as potential reservoirs of Kaposi's sarcoma-associated herpesvirus. PLoS ONE 2008, 3:e1520.
    • (2008) PLoS ONE , vol.3
    • Della Bella, S.1
  • 63
    • 1542571327 scopus 로고    scopus 로고
    • Inefficient establishment of KSHV latency suggests an additional role for continued lytic replication in Kaposi sarcoma pathogenesis
    • Grundhoff A., Ganem D. Inefficient establishment of KSHV latency suggests an additional role for continued lytic replication in Kaposi sarcoma pathogenesis. J. Clin. Invest. 2004, 113:124-136.
    • (2004) J. Clin. Invest. , vol.113 , pp. 124-136
    • Grundhoff, A.1    Ganem, D.2
  • 64
    • 33847619373 scopus 로고    scopus 로고
    • In vivo-restricted and reversible malignancy induced by human herpesvirus-8 KSHV: a cell and animal model of virally induced Kaposi's sarcoma
    • Mutlu A.D., et al. In vivo-restricted and reversible malignancy induced by human herpesvirus-8 KSHV: a cell and animal model of virally induced Kaposi's sarcoma. Cancer Cell 2007, 11:245-258.
    • (2007) Cancer Cell , vol.11 , pp. 245-258
    • Mutlu, A.D.1
  • 65
    • 33745622858 scopus 로고    scopus 로고
    • KSHV/HHV-8 infection of human hematopoietic progenitor (CD34+) cells: persistence of infection during hematopoiesis in vitro and in vivo
    • Wu W., et al. KSHV/HHV-8 infection of human hematopoietic progenitor (CD34+) cells: persistence of infection during hematopoiesis in vitro and in vivo. Blood 2006, 108:141-151.
    • (2006) Blood , vol.108 , pp. 141-151
    • Wu, W.1
  • 66
    • 45149111374 scopus 로고    scopus 로고
    • Circulating endothelial progenitor cells are increased in patients with classic Kaposi's sarcoma
    • Taddeo A., et al. Circulating endothelial progenitor cells are increased in patients with classic Kaposi's sarcoma. J. Invest. Dermatol. 2008, 128:2125-2128.
    • (2008) J. Invest. Dermatol. , vol.128 , pp. 2125-2128
    • Taddeo, A.1
  • 67
    • 33747464670 scopus 로고    scopus 로고
    • Lymphatic and vascular origin of Kaposi's sarcoma spindle cells during tumor development
    • Pyakurel P., et al. Lymphatic and vascular origin of Kaposi's sarcoma spindle cells during tumor development. Int. J. Cancer 2006, 119:1262-1267.
    • (2006) Int. J. Cancer , vol.119 , pp. 1262-1267
    • Pyakurel, P.1
  • 68
    • 0037129446 scopus 로고    scopus 로고
    • Development of Kaposi's sarcoma in a surgical wound
    • Webster-Cyriaque J. Development of Kaposi's sarcoma in a surgical wound. N. Engl. J. Med. 2002, 346:1207-1210.
    • (2002) N. Engl. J. Med. , vol.346 , pp. 1207-1210
    • Webster-Cyriaque, J.1
  • 69
    • 0038413923 scopus 로고    scopus 로고
    • Post-transplant Kaposi sarcoma originates from the seeding of donor-derived progenitors
    • Barozzi P., et al. Post-transplant Kaposi sarcoma originates from the seeding of donor-derived progenitors. Nat. Med. 2003, 9:554-561.
    • (2003) Nat. Med. , vol.9 , pp. 554-561
    • Barozzi, P.1
  • 70
    • 1642334164 scopus 로고    scopus 로고
    • Persistence of the Epstein-Barr virus and the origins of associated lymphomas
    • Thorley-Lawson D.A., Gross A. Persistence of the Epstein-Barr virus and the origins of associated lymphomas. N. Engl. J. Med. 2004, 350:1328-1337.
    • (2004) N. Engl. J. Med. , vol.350 , pp. 1328-1337
    • Thorley-Lawson, D.A.1    Gross, A.2
  • 71
    • 56349158720 scopus 로고    scopus 로고
    • The curious case of the tumour virus: 50 years of Burkitt's lymphoma
    • Thorley-Lawson D.A., Allday M.J. The curious case of the tumour virus: 50 years of Burkitt's lymphoma. Nat. Rev. Microbiol. 2008, 6:913-924.
    • (2008) Nat. Rev. Microbiol. , vol.6 , pp. 913-924
    • Thorley-Lawson, D.A.1    Allday, M.J.2
  • 72
    • 0029941602 scopus 로고    scopus 로고
    • Human herpesvirus-8/Kaposi's sarcoma-associated herpesvirus is a new transmissible virus that infects B cells
    • Mesri E.A., et al. Human herpesvirus-8/Kaposi's sarcoma-associated herpesvirus is a new transmissible virus that infects B cells. J. Exp. Med. 1996, 183:2385-2390.
    • (1996) J. Exp. Med. , vol.183 , pp. 2385-2390
    • Mesri, E.A.1
  • 73
    • 0042337395 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus-infected primary effusion lymphoma has a plasma cell gene expression profile
    • Jenner R.G., et al. Kaposi's sarcoma-associated herpesvirus-infected primary effusion lymphoma has a plasma cell gene expression profile. Proc. Natl. Acad. Sci. U.S.A. 2003, 100:10399-10404.
    • (2003) Proc. Natl. Acad. Sci. U.S.A. , vol.100 , pp. 10399-10404
    • Jenner, R.G.1
  • 74
    • 36148986474 scopus 로고    scopus 로고
    • B cells and herpesviruses: a model of lymphoproliferation
    • Barozzi P., et al. B cells and herpesviruses: a model of lymphoproliferation. Autoimmun. Rev. 2007, 7:132-136.
    • (2007) Autoimmun. Rev. , vol.7 , pp. 132-136
    • Barozzi, P.1
  • 75
    • 79952210971 scopus 로고    scopus 로고
    • Kaposi sarcoma herpesvirus (KSHV) vFLIP oncoprotein induces B cell transdifferentiation and tumorigenesis in mice
    • Ballon G., et al. Kaposi sarcoma herpesvirus (KSHV) vFLIP oncoprotein induces B cell transdifferentiation and tumorigenesis in mice. J. Clin. Invest. 2011, 121:1141-1153.
    • (2011) J. Clin. Invest. , vol.121 , pp. 1141-1153
    • Ballon, G.1
  • 76
    • 0034651687 scopus 로고    scopus 로고
    • HHV-8 is associated with a plasmablastic variant of Castleman disease that is linked to HHV-8-positive plasmablastic lymphoma
    • Dupin N., et al. HHV-8 is associated with a plasmablastic variant of Castleman disease that is linked to HHV-8-positive plasmablastic lymphoma. Blood 2000, 95:1406-1412.
    • (2000) Blood , vol.95 , pp. 1406-1412
    • Dupin, N.1
  • 77
    • 0041967157 scopus 로고    scopus 로고
    • Human papillomaviruses: targeting differentiating epithelial cells for malignant transformation
    • Fehrmann F., Laimins L.A. Human papillomaviruses: targeting differentiating epithelial cells for malignant transformation. Oncogene 2003, 22:5201-5207.
    • (2003) Oncogene , vol.22 , pp. 5201-5207
    • Fehrmann, F.1    Laimins, L.A.2
  • 78
    • 72849153133 scopus 로고    scopus 로고
    • Epithelial maturation and molecular biology of oral HPV
    • Feller L., et al. Epithelial maturation and molecular biology of oral HPV. Infect. Agent Cancer 2009, 4:16.
    • (2009) Infect. Agent Cancer , vol.4 , pp. 16
    • Feller, L.1
  • 79
    • 77951847278 scopus 로고    scopus 로고
    • Direct transcriptional regulation of neuropilin-2 by COUP-TFII modulates multiple steps in murine lymphatic vessel development
    • Lin F.J., et al. Direct transcriptional regulation of neuropilin-2 by COUP-TFII modulates multiple steps in murine lymphatic vessel development. J. Clin. Invest. 2010, 120:1694-1707.
    • (2010) J. Clin. Invest. , vol.120 , pp. 1694-1707
    • Lin, F.J.1
  • 80
    • 0023855126 scopus 로고
    • Kaposi's sarcoma occurring in a dermatome previously involved by herpes zoster
    • Niedt G.W., Prioleau P.G. Kaposi's sarcoma occurring in a dermatome previously involved by herpes zoster. J. Am. Acad. Dermatol. 1988, 18:448-451.
    • (1988) J. Am. Acad. Dermatol. , vol.18 , pp. 448-451
    • Niedt, G.W.1    Prioleau, P.G.2
  • 81
    • 77649258068 scopus 로고    scopus 로고
    • Kaposi's sarcoma associated herpes virus (KSHV) induced COX-2: a key factor in latency, inflammation, angiogenesis, cell survival and invasion
    • Sharma-Walia N., et al. Kaposi's sarcoma associated herpes virus (KSHV) induced COX-2: a key factor in latency, inflammation, angiogenesis, cell survival and invasion. PLoS Pathog. 2010, 6:e1000777.
    • (2010) PLoS Pathog. , vol.6
    • Sharma-Walia, N.1
  • 82
    • 63149182116 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus upregulates angiogenin during infection of human dermal microvascular endothelial cells, which induces 45S rRNA synthesis, antiapoptosis, cell proliferation, migration, and angiogenesis
    • Sadagopan S., et al. Kaposi's sarcoma-associated herpesvirus upregulates angiogenin during infection of human dermal microvascular endothelial cells, which induces 45S rRNA synthesis, antiapoptosis, cell proliferation, migration, and angiogenesis. J. Virol. 2009, 83:3342-3364.
    • (2009) J. Virol. , vol.83 , pp. 3342-3364
    • Sadagopan, S.1
  • 83
    • 38849143913 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus induces sustained levels of vascular endothelial growth factors A and C early during in vitro infection of human microvascular dermal endothelial cells: biological implications
    • Sivakumar R., et al. Kaposi's sarcoma-associated herpesvirus induces sustained levels of vascular endothelial growth factors A and C early during in vitro infection of human microvascular dermal endothelial cells: biological implications. J. Virol. 2008, 82:1759-1776.
    • (2008) J. Virol. , vol.82 , pp. 1759-1776
    • Sivakumar, R.1
  • 84
    • 34247117937 scopus 로고    scopus 로고
    • Kaposi's sarcoma-associated herpesvirus promotes angiogenesis by inducing angiopoietin-2 expression via AP-1 and Ets1
    • Ye F.C., et al. Kaposi's sarcoma-associated herpesvirus promotes angiogenesis by inducing angiopoietin-2 expression via AP-1 and Ets1. J. Virol. 2007, 81:3980-3991.
    • (2007) J. Virol. , vol.81 , pp. 3980-3991
    • Ye, F.C.1
  • 85
    • 84866910260 scopus 로고    scopus 로고
    • Kaposi's sarcoma herpesvirus K15 protein contributes to virus-induced angiogenesis by recruiting PLCgamma1 and activating NFAT1-dependent RCAN1 expression
    • Bala K., et al. Kaposi's sarcoma herpesvirus K15 protein contributes to virus-induced angiogenesis by recruiting PLCgamma1 and activating NFAT1-dependent RCAN1 expression. PLoS Pathog. 2012, 8:e1002927.
    • (2012) PLoS Pathog. , vol.8
    • Bala, K.1
  • 86
    • 0030955108 scopus 로고    scopus 로고
    • Monoclonal origin of multicentric Kaposi's sarcoma lesions
    • Rabkin C.S., et al. Monoclonal origin of multicentric Kaposi's sarcoma lesions. N. Engl. J. Med. 1997, 336:988-993.
    • (1997) N. Engl. J. Med. , vol.336 , pp. 988-993
    • Rabkin, C.S.1
  • 87
    • 76749083490 scopus 로고    scopus 로고
    • Lymphangiogenesis: molecular mechanisms and future promise
    • Tammela T., Alitalo K. Lymphangiogenesis: molecular mechanisms and future promise. Cell 2010, 140:460-476.
    • (2010) Cell , vol.140 , pp. 460-476
    • Tammela, T.1    Alitalo, K.2
  • 88
    • 0035903330 scopus 로고    scopus 로고
    • Isolation and characterization of dermal lymphatic and blood endothelial cells reveal stable and functionally specialized cell lineages
    • Kriehuber E., et al. Isolation and characterization of dermal lymphatic and blood endothelial cells reveal stable and functionally specialized cell lineages. J. Exp. Med. 2001, 194:797-808.
    • (2001) J. Exp. Med. , vol.194 , pp. 797-808
    • Kriehuber, E.1
  • 89
    • 0037331713 scopus 로고    scopus 로고
    • Identification of vascular lineage-specific genes by transcriptional profiling of isolated blood vascular and lymphatic endothelial cells
    • Hirakawa S., et al. Identification of vascular lineage-specific genes by transcriptional profiling of isolated blood vascular and lymphatic endothelial cells. Am. J. Pathol. 2003, 162:575-586.
    • (2003) Am. J. Pathol. , vol.162 , pp. 575-586
    • Hirakawa, S.1
  • 90
    • 0036208217 scopus 로고    scopus 로고
    • The rediscovery of the lymphatic system: old and new insights into the development and biological function of the lymphatic vasculature
    • Oliver G., Detmar M. The rediscovery of the lymphatic system: old and new insights into the development and biological function of the lymphatic vasculature. Genes Dev. 2002, 16:773-783.
    • (2002) Genes Dev. , vol.16 , pp. 773-783
    • Oliver, G.1    Detmar, M.2
  • 91
    • 0346458751 scopus 로고    scopus 로고
    • Lymphatic vasculature development
    • Oliver G. Lymphatic vasculature development. Nat. Rev. Immunol. 2004, 4:35-45.
    • (2004) Nat. Rev. Immunol. , vol.4 , pp. 35-45
    • Oliver, G.1
  • 92
    • 9144236286 scopus 로고    scopus 로고
    • Vascular endothelial growth factor C is required for sprouting of the first lymphatic vessels from embryonic veins
    • Karkkainen M.J., et al. Vascular endothelial growth factor C is required for sprouting of the first lymphatic vessels from embryonic veins. Nat. Immunol. 2004, 5:74-80.
    • (2004) Nat. Immunol. , vol.5 , pp. 74-80
    • Karkkainen, M.J.1
  • 93
    • 34948856826 scopus 로고    scopus 로고
    • Lineage tracing demonstrates the venous origin of the mammalian lymphatic vasculature
    • Srinivasan R.S., et al. Lineage tracing demonstrates the venous origin of the mammalian lymphatic vasculature. Genes Dev. 2007, 21:2422-2432.
    • (2007) Genes Dev. , vol.21 , pp. 2422-2432
    • Srinivasan, R.S.1
  • 94
    • 0033578853 scopus 로고    scopus 로고
    • Prox1 function is required for the development of the murine lymphatic system
    • Wigle J.T., Oliver G. Prox1 function is required for the development of the murine lymphatic system. Cell 1999, 98:769-778.
    • (1999) Cell , vol.98 , pp. 769-778
    • Wigle, J.T.1    Oliver, G.2
  • 95
    • 33744967506 scopus 로고    scopus 로고
    • Live imaging of lymphatic development in the zebrafish
    • Yaniv K., et al. Live imaging of lymphatic development in the zebrafish. Nat. Med. 2006, 12:711-716.
    • (2006) Nat. Med. , vol.12 , pp. 711-716
    • Yaniv, K.1
  • 96
    • 56749183614 scopus 로고    scopus 로고
    • Developmental and pathological lymphangiogenesis: from models to human disease
    • Maby-El Hajjami H., Petrova T.V. Developmental and pathological lymphangiogenesis: from models to human disease. Histochem. Cell Biol. 2008, 130:1063-1078.
    • (2008) Histochem. Cell Biol. , vol.130 , pp. 1063-1078
    • Maby-El Hajjami, H.1    Petrova, T.V.2
  • 97
    • 28444471256 scopus 로고    scopus 로고
    • The lymphatic vasculature: recent progress and paradigms
    • Oliver G., Alitalo K. The lymphatic vasculature: recent progress and paradigms. Annu. Rev. Cell Dev. Biol. 2005, 21:457-483.
    • (2005) Annu. Rev. Cell Dev. Biol. , vol.21 , pp. 457-483
    • Oliver, G.1    Alitalo, K.2
  • 98
    • 57349142376 scopus 로고    scopus 로고
    • Sox18 induces development of the lymphatic vasculature in mice
    • Francois M., et al. Sox18 induces development of the lymphatic vasculature in mice. Nature 2008, 456:643-647.
    • (2008) Nature , vol.456 , pp. 643-647
    • Francois, M.1
  • 99
    • 77950469880 scopus 로고    scopus 로고
    • The nuclear hormone receptor Coup-TFII is required for the initiation and early maintenance of Prox1 expression in lymphatic endothelial cells
    • Srinivasan R.S., et al. The nuclear hormone receptor Coup-TFII is required for the initiation and early maintenance of Prox1 expression in lymphatic endothelial cells. Genes Dev. 2010, 24:696-707.
    • (2010) Genes Dev. , vol.24 , pp. 696-707
    • Srinivasan, R.S.1
  • 100
    • 74349115339 scopus 로고    scopus 로고
    • Endothelial cell plasticity: how to become and remain a lymphatic endothelial cell
    • Oliver G., Srinivasan R.S. Endothelial cell plasticity: how to become and remain a lymphatic endothelial cell. Development 2010, 137:363-372.
    • (2010) Development , vol.137 , pp. 363-372
    • Oliver, G.1    Srinivasan, R.S.2
  • 101
    • 0036964981 scopus 로고    scopus 로고
    • A stepwise model of the development of lymphatic vasculature
    • discussion 188-196
    • Oliver G., Harvey N. A stepwise model of the development of lymphatic vasculature. Ann. N. Y. Acad. Sci. 2002, 979:159-165. discussion 188-196.
    • (2002) Ann. N. Y. Acad. Sci. , vol.979 , pp. 159-165
    • Oliver, G.1    Harvey, N.2
  • 102
    • 33747195353 scopus 로고    scopus 로고
    • Induction of pluripotent stem cells from mouse embryonic and adult fibroblast cultures by defined factors
    • Takahashi K., Yamanaka S. Induction of pluripotent stem cells from mouse embryonic and adult fibroblast cultures by defined factors. Cell 2006, 126:663-676.
    • (2006) Cell , vol.126 , pp. 663-676
    • Takahashi, K.1    Yamanaka, S.2
  • 103
    • 77649162059 scopus 로고    scopus 로고
    • Direct conversion of fibroblasts to functional neurons by defined factors
    • Vierbuchen T., et al. Direct conversion of fibroblasts to functional neurons by defined factors. Nature 2010, 463:1035-1041.
    • (2010) Nature , vol.463 , pp. 1035-1041
    • Vierbuchen, T.1
  • 104
    • 34848853915 scopus 로고    scopus 로고
    • Conversion of mature B cells into T cells by dedifferentiation to uncommitted progenitors
    • Cobaleda C., et al. Conversion of mature B cells into T cells by dedifferentiation to uncommitted progenitors. Nature 2007, 449:473-477.
    • (2007) Nature , vol.449 , pp. 473-477
    • Cobaleda, C.1
  • 105
    • 57749087100 scopus 로고    scopus 로고
    • Lymphatic endothelial cell identity is reversible and its maintenance requires Prox1 activity
    • Johnson N.C., et al. Lymphatic endothelial cell identity is reversible and its maintenance requires Prox1 activity. Genes Dev. 2008, 22:3282-3291.
    • (2008) Genes Dev. , vol.22 , pp. 3282-3291
    • Johnson, N.C.1
  • 106
    • 18344377007 scopus 로고    scopus 로고
    • Suppression of Notch signalling by the COUP-TFII transcription factor regulates vein identity
    • You L.R., et al. Suppression of Notch signalling by the COUP-TFII transcription factor regulates vein identity. Nature 2005, 435:98-104.
    • (2005) Nature , vol.435 , pp. 98-104
    • You, L.R.1
  • 107
    • 33646168051 scopus 로고    scopus 로고
    • A combined computational and microarray-based approach identifies novel microRNAs encoded by human gamma-herpesviruses
    • Grundhoff A., et al. A combined computational and microarray-based approach identifies novel microRNAs encoded by human gamma-herpesviruses. RNA 2006, 12:733-750.
    • (2006) RNA , vol.12 , pp. 733-750
    • Grundhoff, A.1
  • 108
    • 0037075888 scopus 로고    scopus 로고
    • The molecular pathology of Kaposi's sarcoma-associated herpesvirus
    • Jenner R.G., Boshoff C. The molecular pathology of Kaposi's sarcoma-associated herpesvirus. Biochim. Biophys. Acta 2002, 1602:1-22.
    • (2002) Biochim. Biophys. Acta , vol.1602 , pp. 1-22
    • Jenner, R.G.1    Boshoff, C.2


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