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Volumn 26, Issue 11, 2005, Pages 1879-1889

Differential transcriptional regulation of human telomerase in a cellular model representing important genetic alterations in esophageal squamous carcinogenesis

Author keywords

[No Author keywords available]

Indexed keywords

CYCLIN D1; MYC PROTEIN; TELOMERASE; TELOMERASE REVERSE TRANSCRIPTASE; TRANSCRIPTION FACTOR E2F; TRANSCRIPTION FACTOR SP1;

EID: 27744529808     PISSN: 01433334     EISSN: 14602180     Source Type: Journal    
DOI: 10.1093/carcin/bgi153     Document Type: Article
Times cited : (17)

References (56)
  • 1
    • 0037079003 scopus 로고    scopus 로고
    • Rules for making human tumor cells
    • [Erratum (2003) N. Engl. J. Med., 348, 674] N
    • Hahn,W.C. and Weinberg,R.A. (2002) Rules for making human tumor cells [Erratum (2003) N. Engl. J. Med., 348, 674]. N. Engl. J. Med., 347, 1593-1603.
    • (2002) Engl. J. Med. , vol.347 , pp. 1593-1603
    • Hahn, W.C.1    Weinberg, R.A.2
  • 3
    • 0025731583 scopus 로고
    • Structure and function of telomeres
    • Blackburn,E.H. (1991) Structure and function of telomeres. Nature, 350, 569-573.
    • (1991) Nature , vol.350 , pp. 569-573
    • Blackburn, E.H.1
  • 8
    • 0030975976 scopus 로고    scopus 로고
    • The targeting of the cyclin D1 oncogene by an Epstein-Barr virus promoter in transgenic mice causes dysplasia in the tongue, esophagus and forestomach
    • Nakagawa,H., Wang,T.C., Zukerberg,L., Odze,R., Togawa,K., May,G.H., Wilson,J. and Rustgi,A.K. (1997) The targeting of the cyclin D1 oncogene by an Epstein-Barr virus promoter in transgenic mice causes dysplasia in the tongue, esophagus and forestomach. Oncogene, 14, 1185-1190.
    • (1997) Oncogene , vol.14 , pp. 1185-1190
    • Nakagawa, H.1    Wang, T.C.2    Zukerberg, L.3    Odze, R.4    Togawa, K.5    May, G.H.6    Wilson, J.7    Rustgi, A.K.8
  • 9
    • 0028033270 scopus 로고
    • Mutations and altered expression of p16INK4 in human cancer
    • Okamoto,A., Demetrick,D.J., Spillare,E.A. et al. (1994) Mutations and altered expression of p16INK4 in human cancer. Proc. Natl Acad. Sci. USA, 91, 11045-11049.
    • (1994) Proc. Natl. Acad. Sci. USA , vol.91 , pp. 11045-11049
    • Okamoto, A.1    Demetrick, D.J.2    Spillare, E.A.3
  • 11
    • 0043199578 scopus 로고    scopus 로고
    • Telomerase maintains telomere structure in normal human cells
    • Masutomi,K., Yu,E.Y., Khurts,S. et al. (2003) Telomerase maintains telomere structure in normal human cells. Cell, 114, 241-253.
    • (2003) Cell , vol.114 , pp. 241-253
    • Masutomi, K.1    Yu, E.Y.2    Khurts, S.3
  • 12
    • 0030745448 scopus 로고    scopus 로고
    • hEST2, the putative human telomerase catalytic subunit gene, is up-regulated in tumor cells and during immortalization
    • Meyerson,M., Counter,C.M., Eaton,E.N. et al. (1997) hEST2, the putative human telomerase catalytic subunit gene, is up-regulated in tumor cells and during immortalization. Cell, 90, 785-795.
    • (1997) Cell , vol.90 , pp. 785-795
    • Meyerson, M.1    Counter, C.M.2    Eaton, E.N.3
  • 15
    • 0032054313 scopus 로고    scopus 로고
    • Expression of human telomerase subunits and correlation with telomerase activity in cervical cancer
    • Takakura,M., Kyo,S., Kanaya,T., Tanaka,M. and Inoue,M. (1998) Expression of human telomerase subunits and correlation with telomerase activity in cervical cancer. Cancer Res., 58, 1558-1561.
    • (1998) Cancer Res. , vol.58 , pp. 1558-1561
    • Takakura, M.1    Kyo, S.2    Kanaya, T.3    Tanaka, M.4    Inoue, M.5
  • 16
    • 0042169025 scopus 로고    scopus 로고
    • Transcriptional regulation of the telomerase hTERT gene as a target for cellular and viral oncogenic mechanisms
    • Horikawa,I. and Barrett,J.C. (2003) Transcriptional regulation of the telomerase hTERT gene as a target for cellular and viral oncogenic mechanisms. Carcinogenesis, 24, 1167-1176.
    • (2003) Carcinogenesis , vol.24 , pp. 1167-1176
    • Horikawa, I.1    Barrett, J.C.2
  • 17
    • 0035283896 scopus 로고    scopus 로고
    • Tissue-specific alternate splicing of human telomerase reverse transcriptase (hTERT) influences telomere lengths during human development
    • Ulaner,G.A., Hu,J.F., Vu,T.H., Giudice,L.C. and Hoffman,A.R. (2001) Tissue-specific alternate splicing of human telomerase reverse transcriptase (hTERT) influences telomere lengths during human development. Int. J. Cancer, 91, 644-649.
    • (2001) Int. J. Cancer , vol.91 , pp. 644-649
    • Ulaner, G.A.1    Hu, J.F.2    Vu, T.H.3    Giudice, L.C.4    Hoffman, A.R.5
  • 18
    • 0037087550 scopus 로고    scopus 로고
    • Dual regulation of telomerase activity through c-Myc-dependent inhibition and alternative splicing of hTERT
    • Cerezo,A., Kalthoff,H., Schuermann,M., Schafer,B. and Boukamp,P. (2002) Dual regulation of telomerase activity through c-Myc-dependent inhibition and alternative splicing of hTERT. J. Cell. Sci., 115, 1305-1312.
    • (2002) J. Cell. Sci. , vol.115 , pp. 1305-1312
    • Cerezo, A.1    Kalthoff, H.2    Schuermann, M.3    Schafer, B.4    Boukamp, P.5
  • 19
  • 20
    • 0035871710 scopus 로고    scopus 로고
    • Cutting edge: Telomerase activation in human T lymphocytes does not require increase in telomerase reverse transcriptase (hTERT) protein but is associated with hTERT phosphorylation and nuclear translocation
    • Liu,K., Hodes,R.J. and Weng,N. (2001) Cutting edge: Telomerase activation in human T lymphocytes does not require increase in telomerase reverse transcriptase (hTERT) protein but is associated with hTERT phosphorylation and nuclear translocation. J. Immunol., 166, 4826-4830.
    • (2001) J. Immunol. , vol.166 , pp. 4826-4830
    • Liu, K.1    Hodes, R.J.2    Weng, N.3
  • 21
    • 0035897568 scopus 로고    scopus 로고
    • Activity, function, and gene regulation of the catalytic subunit of telomerase (hTERT)
    • Poole,J.C., Andrews,L.G. and Tollefsbol,T.O. (2001) Activity, function, and gene regulation of the catalytic subunit of telomerase (hTERT). Gene, 269, 1-12.
    • (2001) Gene , vol.269 , pp. 1-12
    • Poole, J.C.1    Andrews, L.G.2    Tollefsbol, T.O.3
  • 22
    • 0037148401 scopus 로고    scopus 로고
    • Regulation of the human telomerase reverse transcriptase gene
    • Ducrest,A.L., Szutorisz,H., Lingner,J. and Nabholz,M. (2002) Regulation of the human telomerase reverse transcriptase gene. Oncogene, 21, 541-552.
    • (2002) Oncogene , vol.21 , pp. 541-552
    • Ducrest, A.L.1    Szutorisz, H.2    Lingner, J.3    Nabholz, M.4
  • 23
    • 0033558281 scopus 로고    scopus 로고
    • Cloning and characterization of the promoter region of human telomerase reverse transcriptase gene
    • Horikawa,I., Cable,P.L., Afshari,C. and Barrett,J.C. (1999) Cloning and characterization of the promoter region of human telomerase reverse transcriptase gene. Cancer Res., 59, 826-830.
    • (1999) Cancer Res. , vol.59 , pp. 826-830
    • Horikawa, I.1    Cable, P.L.2    Afshari, C.3    Barrett, J.C.4
  • 24
    • 0037148327 scopus 로고    scopus 로고
    • Complex regulatory mechanisms of telomerase activity in normal and cancer cells: How can we apply them for cancer therapy?
    • Kyo,S. and Inoue,M. (2002) Complex regulatory mechanisms of telomerase activity in normal and cancer cells: How can we apply them for cancer therapy? Oncogene, 21, 688-697.
    • (2002) Oncogene , vol.21 , pp. 688-697
    • Kyo, S.1    Inoue, M.2
  • 25
    • 0033082526 scopus 로고    scopus 로고
    • Cloning of human telomerase catalytic subunit (hTERT) gene promoter and identification of proximal core promoter sequences essential for transcriptional activation in immortalized and cancer cells
    • Takakura,M., Kyo,S., Kanaya,T., Hirano,H., Takeda,J., Yutsudo,M. and Inoue,M. (1999) Cloning of human telomerase catalytic subunit (hTERT) gene promoter and identification of proximal core promoter sequences essential for transcriptional activation in immortalized and cancer cells. Cancer Res., 59, 551-557.
    • (1999) Cancer Res. , vol.59 , pp. 551-557
    • Takakura, M.1    Kyo, S.2    Kanaya, T.3    Hirano, H.4    Takeda, J.5    Yutsudo, M.6    Inoue, M.7
  • 27
    • 0034142386 scopus 로고    scopus 로고
    • Sp1 cooperates with c-Myc to activate transcription of the human telomerase reverse transcriptase gene (hTERT)
    • Kyo,S., Takakura,M., Taira,T., Kanaya,T., Itoh,H., Yutsudo,M., Ariga,H. and Inoue,M. (2000) Sp1 cooperates with c-Myc to activate transcription of the human telomerase reverse transcriptase gene (hTERT). Nucleic Acids Res., 28, 669-677.
    • (2000) Nucleic Acids Res. , vol.28 , pp. 669-677
    • Kyo, S.1    Takakura, M.2    Taira, T.3    Kanaya, T.4    Itoh, H.5    Yutsudo, M.6    Ariga, H.7    Inoue, M.8
  • 28
    • 0037161961 scopus 로고    scopus 로고
    • Human telomerase accelerates growth of lens epithelial cells through regulation of the genes mediating RB/E2F pathway
    • Xiang,H., Wang,J., Mao,Y., Liu,M., Reddy,V.N. and Li,D.W. (2002) Human telomerase accelerates growth of lens epithelial cells through regulation of the genes mediating RB/E2F pathway. Oncogene, 21, 3784-3791.
    • (2002) Oncogene , vol.21 , pp. 3784-3791
    • Xiang, H.1    Wang, J.2    Mao, Y.3    Liu, M.4    Reddy, V.N.5    Li, D.W.6
  • 29
    • 0035957406 scopus 로고    scopus 로고
    • Switch from Myc/Max to Mad1/Max binding and decrease in histone acetylation at the telomerase reverse transcriptase promoter during differentiation of HL60 cells
    • Xu,D., Popov,N., Hou,M., Wang,Q., Bjorkholm,M., Gruber,A., Menkel,A.R. and Henriksson,M. (2001) Switch from Myc/Max to Mad1/Max binding and decrease in histone acetylation at the telomerase reverse transcriptase promoter during differentiation of HL60 cells. Proc. Natl Acad. Sci. USA, 98, 3826-3831.
    • (2001) Proc. Natl. Acad. Sci. USA , vol.98 , pp. 3826-3831
    • Xu, D.1    Popov, N.2    Hou, M.3    Wang, Q.4    Bjorkholm, M.5    Gruber, A.6    Menkel, A.R.7    Henriksson, M.8
  • 30
    • 0343673898 scopus 로고    scopus 로고
    • Expression of the hTERT gene is regulated at the level of transcriptional initiation and repressed by Mad1
    • Gunes,C., Lichtsteiner,S., Vasserot,A.P. and Englert,C. (2000) Expression of the hTERT gene is regulated at the level of transcriptional initiation and repressed by Mad1. Cancer Res., 60, 2116-2121.
    • (2000) Cancer Res. , vol.60 , pp. 2116-2121
    • Gunes, C.1    Lichtsteiner, S.2    Vasserot, A.P.3    Englert, C.4
  • 31
    • 0034624675 scopus 로고    scopus 로고
    • Identification of Mad as a repressor of the human telomerase (hTERT) gene
    • Oh,S., Song,Y.H., Yim,J. and Kim,T.K. (2000) Identification of Mad as a repressor of the human telomerase (hTERT) gene. Oncogene, 19, 1485-1490.
    • (2000) Oncogene , vol.19 , pp. 1485-1490
    • Oh, S.1    Song, Y.H.2    Yim, J.3    Kim, T.K.4
  • 32
    • 0030916486 scopus 로고    scopus 로고
    • Regulated ectopic expression of cyclin D1 induces transcriptional activation of the cdk inhibitor p21 gene without altering cell cycle progression
    • Hiyama,H., Iavarone,A., LaBaer,J. and Reeves,S.A. (1997) Regulated ectopic expression of cyclin D1 induces transcriptional activation of the cdk inhibitor p21 gene without altering cell cycle progression. Oncogene, 14, 2533-2542.
    • (1997) Oncogene , vol.14 , pp. 2533-2542
    • Hiyama, H.1    Iavarone, A.2    LaBaer, J.3    Reeves, S.A.4
  • 33
    • 0034788574 scopus 로고    scopus 로고
    • Cyclin D1 overexpression and p53 inactivation immortalize primary oral keratinocytes by a telomerase-independent mechanism
    • Opitz,O.G., Suliman,Y., Hahn,W.C., Harada,H., Blum,H.E. and Rustgi,A.K. (2001) Cyclin D1 overexpression and p53 inactivation immortalize primary oral keratinocytes by a telomerase-independent mechanism. J. Clin. Invest., 108, 725-732.
    • (2001) J. Clin. Invest. , vol.108 , pp. 725-732
    • Opitz, O.G.1    Suliman, Y.2    Hahn, W.C.3    Harada, H.4    Blum, H.E.5    Rustgi, A.K.6
  • 34
    • 0037449752 scopus 로고    scopus 로고
    • Epidermal growth factor receptor mediates increased cell proliferation, migration, and aggregation in esophageal keratinocytes in vitro and in vivo
    • Andl,C.D., Mizushima,T., Nakagawa,H., Oyama,K., Harada,H., Chruma,K., Herlyn,M. and Rustgi,A.K. (2003) Epidermal growth factor receptor mediates increased cell proliferation, migration, and aggregation in esophageal keratinocytes in vitro and in vivo. J. Biol. Chem., 278, 1824-1830.
    • (2003) J. Biol. Chem. , vol.278 , pp. 1824-1830
    • Andl, C.D.1    Mizushima, T.2    Nakagawa, H.3    Oyama, K.4    Harada, H.5    Chruma, K.6    Herlyn, M.7    Rustgi, A.K.8
  • 36
    • 0032562575 scopus 로고    scopus 로고
    • Transactivation of the human keratin 4 and Epstein-Barr virus ED-L2 promoters by gut-enriched Kruppel-like factor
    • Jenkins,T.D., Opitz,O.G., Okano,J. and Rustgi,A.K. (1998) Transactivation of the human keratin 4 and Epstein-Barr virus ED-L2 promoters by gut-enriched Kruppel-like factor. J. Biol. Chem., 273, 10747-10754.
    • (1998) J. Biol. Chem. , vol.273 , pp. 10747-10754
    • Jenkins, T.D.1    Opitz, O.G.2    Okano, J.3    Rustgi, A.K.4
  • 38
    • 0030974480 scopus 로고    scopus 로고
    • A CACCC box-like cis-regulatory element of the Epstein-Barr virus ED-L2 promoter interacts with a novel transcriptional factor in tissue-specific squamous epithelia
    • Nakagawa,H., Inomoto,T. and Rustgi,A.K. (1997) A CACCC box-like cis-regulatory element of the Epstein-Barr virus ED-L2 promoter interacts with a novel transcriptional factor in tissue-specific squamous epithelia. J. Biol. Chem., 272, 16688-16699.
    • (1997) J. Biol. Chem. , vol.272 , pp. 16688-16699
    • Nakagawa, H.1    Inomoto, T.2    Rustgi, A.K.3
  • 39
    • 0024380087 scopus 로고
    • Rapid detection of octamer binding proteins with 'mini-extracts', prepared from a small number of cells
    • Schreiber,E., Matthias,P., Muller,M.M. and Schaffner,W. (1989) Rapid detection of octamer binding proteins with 'mini-extracts', prepared from a small number of cells. Nucleic Acids Res., 17, 6419.
    • (1989) Nucleic Acids Res. , vol.17 , pp. 6419
    • Schreiber, E.1    Matthias, P.2    Muller, M.M.3    Schaffner, W.4
  • 40
    • 0032508641 scopus 로고    scopus 로고
    • Transcriptional regulation of the differentiation-linked human K4 promoter is dependent upon esophageal-specific nuclear factors
    • Opitz,O.G., Jenkins,T.D. and Rustgi,A.K. (1998) Transcriptional regulation of the differentiation-linked human K4 promoter is dependent upon esophageal-specific nuclear factors. J. Biol. Chem., 273, 23912-23921.
    • (1998) J. Biol. Chem. , vol.273 , pp. 23912-23921
    • Opitz, O.G.1    Jenkins, T.D.2    Rustgi, A.K.3
  • 41
    • 0034614637 scopus 로고    scopus 로고
    • The hallmarks of cancer
    • Hanahan,D. and Weinberg,R.A. (2000) The hallmarks of cancer. Cell, 100, 57-70.
    • (2000) Cell , vol.100 , pp. 57-70
    • Hanahan, D.1    Weinberg, R.A.2
  • 42
    • 0032421337 scopus 로고    scopus 로고
    • Telomerase enzyme activation and human cell immortalization
    • Meyerson,M. (1998) Telomerase enzyme activation and human cell immortalization. Toxicol. Lett., 102-103, 41-45.
    • (1998) Toxicol. Lett. , vol.102-103 , pp. 41-45
    • Meyerson, M.1
  • 43
    • 0141888251 scopus 로고    scopus 로고
    • Induction of endogenous telomerase (hTERT) by c-Myc in WI-38 fibroblasts transformed with specific genetic elements
    • Casillas,M.A., Brotherton,S.L., Andrews,L.G., Ruppert,J.M. and Tollefsbol,T.O. (2003) Induction of endogenous telomerase (hTERT) by c-Myc in WI-38 fibroblasts transformed with specific genetic elements. Gene, 316, 57-65.
    • (2003) Gene , vol.316 , pp. 57-65
    • Casillas, M.A.1    Brotherton, S.L.2    Andrews, L.G.3    Ruppert, J.M.4    Tollefsbol, T.O.5
  • 44
    • 0032962953 scopus 로고    scopus 로고
    • The human telomerase catalytic subunit hTERT: Organization of the gene and characterization of the promoter
    • Cong,Y.S., Wen,J. and Bacchetti,S. (1999) The human telomerase catalytic subunit hTERT: Organization of the gene and characterization of the promoter. Hum. Mol. Genet., 8, 137-142.
    • (1999) Hum. Mol. Genet. , vol.8 , pp. 137-142
    • Cong, Y.S.1    Wen, J.2    Bacchetti, S.3
  • 45
    • 0036677419 scopus 로고    scopus 로고
    • Downstream E-box-mediated regulation of the human telomerase reverse transcriptase (hTERT) gene transcription: Evidence for an endogenous mechanism of transcriptional repression
    • Horikawa,I., Cable,P.L., Mazur,S.J., Appella,E., Afshari,C.A. and Barrett,J.C. (2002) Downstream E-box-mediated regulation of the human telomerase reverse transcriptase (hTERT) gene transcription: Evidence for an endogenous mechanism of transcriptional repression. Mol. Biol. Cell., 13, 2585-2597.
    • (2002) Mol. Biol. Cell. , vol.13 , pp. 2585-2597
    • Horikawa, I.1    Cable, P.L.2    Mazur, S.J.3    Appella, E.4    Afshari, C.A.5    Barrett, J.C.6
  • 46
    • 0025986514 scopus 로고
    • Transcription from a TATA-less promoter requires a multisubunit TFIID complex
    • Pugh,B.F. and Tjian,R. (1991) Transcription from a TATA-less promoter requires a multisubunit TFIID complex. Genes Dev., 5, 1935-1945.
    • (1991) Genes Dev. , vol.5 , pp. 1935-1945
    • Pugh, B.F.1    Tjian, R.2
  • 47
    • 0034048726 scopus 로고    scopus 로고
    • Adenoviral expression of p53 represses telomerase activity through down-regulation of human telomerase reverse transcriptase transcription
    • Kanaya,T., Kyo,S., Hamada,K., Takakura,M., Kitagawa,Y., Harada,H. and Inoue,M. (2000) Adenoviral expression of p53 represses telomerase activity through down-regulation of human telomerase reverse transcriptase transcription. Clin. Cancer Res., 6, 1239-1247.
    • (2000) Clin. Cancer Res. , vol.6 , pp. 1239-1247
    • Kanaya, T.1    Kyo, S.2    Hamada, K.3    Takakura, M.4    Kitagawa, Y.5    Harada, H.6    Inoue, M.7
  • 48
    • 0037064089 scopus 로고    scopus 로고
    • Sp1 and Sp3 recruit histone deacetylase to repress transcription of human telomerase reverse transcriptase (hTERT) promoter in normal human somatic cells
    • Won,J., Yim,J. and Kim,T.K. (2002) Sp1 and Sp3 recruit histone deacetylase to repress transcription of human telomerase reverse transcriptase (hTERT) promoter in normal human somatic cells. J. Biol. Chem., 277, 38230-38238.
    • (2002) J. Biol. Chem. , vol.277 , pp. 38230-38238
    • Won, J.1    Yim, J.2    Kim, T.K.3
  • 51
    • 0035043423 scopus 로고    scopus 로고
    • Transcriptional activation of the telomerase hTERT gene by human papillomavirus type 16 E6 oncoprotein
    • Veldman,T., Horikawa,I., Barrett,J.C. and Schlegel,R. (2001) Transcriptional activation of the telomerase hTERT gene by human papillomavirus type 16 E6 oncoprotein. J. Virol., 75, 4467-4472.
    • (2001) J. Virol. , vol.75 , pp. 4467-4472
    • Veldman, T.1    Horikawa, I.2    Barrett, J.C.3    Schlegel, R.4
  • 52
    • 0034947881 scopus 로고    scopus 로고
    • E box-dependent activation of telomerase by human papillomavirus type 16 E6 does not require induction of c-myc
    • Gewin,L. and Galloway,D.A. (2001) E box-dependent activation of telomerase by human papillomavirus type 16 E6 does not require induction of c-myc. J. Virol., 75, 7198-7201.
    • (2001) J. Virol. , vol.75 , pp. 7198-7201
    • Gewin, L.1    Galloway, D.A.2
  • 53
    • 0035394055 scopus 로고    scopus 로고
    • E2F-1 represses transcription of the human telomerase reverse transcriptase gene
    • Crowe,D.L., Nguyen,D.C., Tsang,K.J. and Kyo,S. (2001) E2F-1 represses transcription of the human telomerase reverse transcriptase gene. Nucleic Acids Res., 29, 2789-2794.
    • (2001) Nucleic Acids Res. , vol.29 , pp. 2789-2794
    • Crowe, D.L.1    Nguyen, D.C.2    Tsang, K.J.3    Kyo, S.4
  • 54
    • 0036884618 scopus 로고    scopus 로고
    • Opposing regulatory roles of E2F in human telomerase reverse transcriptase (hTERT) gene expression in human tumor and normal somatic cells
    • Won,J., Yim,J. and Kim,T.K. (2002) Opposing regulatory roles of E2F in human telomerase reverse transcriptase (hTERT) gene expression in human tumor and normal somatic cells. FASEB J., 16, 1943-1945.
    • (2002) FASEB J. , vol.16 , pp. 1943-1945
    • Won, J.1    Yim, J.2    Kim, T.K.3
  • 56
    • 8444247426 scopus 로고    scopus 로고
    • Unusual distribution of DNA methylation within the hTERT CpG island in tissues and cell lines
    • Guilleret,I. and Benhattar,J. (2004) Unusual distribution of DNA methylation within the hTERT CpG island in tissues and cell lines. Biochem. Biophys. Res. Commun., 325, 1037-1043.
    • (2004) Biochem. Biophys. Res. Commun. , vol.325 , pp. 1037-1043
    • Guilleret, I.1    Benhattar, J.2


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