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Volumn 102, Issue 6, 2010, Pages 689-698

Atypical expression and distribution of embryonic stem cell marker, OCT4, in human lung adenocarcinoma

Author keywords

adenocarcinoma; cancer stem cells; lung cancer; OCT4A; OCT4B

Indexed keywords

OCTAMER TRANSCRIPTION FACTOR 4; OCTAMER TRANSCRIPTION FACTOR 4A; OCTAMER TRANSCRIPTION FACTOR 4B; UNCLASSIFIED DRUG;

EID: 78349291802     PISSN: 00224790     EISSN: 10969098     Source Type: Journal    
DOI: 10.1002/jso.21665     Document Type: Article
Times cited : (29)

References (51)
  • 1
    • 65249162825 scopus 로고    scopus 로고
    • Stem cells and the natural history of lung cancer: Implications for lung cancer screening
    • van Klaveren RJ, van't Westeinde SC, de Hoop BJ, et al.: Stem cells and the natural history of lung cancer: Implications for lung cancer screening. Clin Cancer Res 2009; 15: 2215-2218.
    • (2009) Clin Cancer Res , vol.15 , pp. 2215-2218
    • Van Klaveren, R.J.1    Van'T Westeinde, S.C.2    De Hoop, B.J.3
  • 2
    • 34249825795 scopus 로고    scopus 로고
    • Adenocarcinoma of the lung: Current concepts in radiologic diagnosis and management
    • Shiau MC, Bonavita J, Naidich DP:, Adenocarcinoma of the lung: Current concepts in radiologic diagnosis and management. Curr Opin Pulm Med 2007; 13: 261-266.
    • (2007) Curr Opin Pulm Med , vol.13 , pp. 261-266
    • Shiau, M.C.1    Bonavita, J.2    Naidich, D.3
  • 3
    • 24344506258 scopus 로고    scopus 로고
    • Cancer stem cells: Lessons from leukemia
    • DOI 10.1016/j.tcb.2005.07.004, PII S0962892405001789
    • Wang JC, Dick JE:, Cancer stem cells: Lessons from leukemia. Trends Cell Biol 2005; 15: 494-501. (Pubitemid 41253469)
    • (2005) Trends in Cell Biology , vol.15 , Issue.9 , pp. 494-501
    • Wang, J.C.Y.1    Dick, J.E.2
  • 4
    • 52549087785 scopus 로고    scopus 로고
    • Cancer stem cells in solid tumours: Accumulating evidence and unresolved questions
    • Visvader JE, Lindeman GJ:, Cancer stem cells in solid tumours: Accumulating evidence and unresolved questions. Nat Rev Cancer 2008; 8: 755-768.
    • (2008) Nat Rev Cancer , vol.8 , pp. 755-768
    • Visvader, J.E.1    Lindeman, G.2
  • 5
    • 0035499267 scopus 로고    scopus 로고
    • Stem cells, cancer, and cancer stem cells
    • Reya T, Morrison SJ, Clarke MF, et al.: Stem cells, cancer, and cancer stem cells. Nature 2001; 414: 105-111.
    • (2001) Nature , vol.414 , pp. 105-111
    • Reya, T.1    Morrison, S.J.2    Clarke, M.F.3
  • 6
    • 0019945899 scopus 로고
    • Demonstration of the stem cell nature of clonogenic tumor cells from lung cancer patients
    • Carney DN, Gazdar AF, Bunn PA, Jr., et al.: Demonstration of the stem cell nature of clonogenic tumor cells from lung cancer patients. Stem Cells 1982; 1: 149-164.
    • (1982) Stem Cells , vol.1 , pp. 149-164
    • Carney, D.N.1    Gazdar, A.F.2    Bunn Jr., P.A.3
  • 7
    • 49949111381 scopus 로고    scopus 로고
    • Oct-4 expression maintained cancer stem-like properties in lung cancer-derived CD133-positive cells
    • Chen YC, Hsu HS, Chen YW, et al.: Oct-4 expression maintained cancer stem-like properties in lung cancer-derived CD133-positive cells. PLoS ONE 2008; 3: e2637.
    • (2008) PLoS ONE , vol.3 , pp. 2637
    • Chen, Y.C.1    Hsu, H.S.2    Chen, Y.W.3
  • 8
    • 20444397431 scopus 로고    scopus 로고
    • Identification of bronchioalveolar stem cells in normal lung and lung cancer
    • Kim CF, Jackson EL, Woolfenden AE, et al.: Identification of bronchioalveolar stem cells in normal lung and lung cancer. Cell 2005; 121: 823-835.
    • (2005) Cell , vol.121 , pp. 823-835
    • Kim, C.F.1    Jackson, E.L.2    Woolfenden, A.E.3
  • 9
    • 38349168094 scopus 로고    scopus 로고
    • Oncogene-induced plasticity and cancer stem cells
    • Rapp UR, Ceteci F, Schreck R:, Oncogene-induced plasticity and cancer stem cells. Cell Cycle 2008; 7: 45-51.
    • (2008) Cell Cycle , vol.7 , pp. 45-51
    • Rapp, U.R.1    Ceteci, F.2    Schreck, R.3
  • 10
    • 71549155909 scopus 로고    scopus 로고
    • Correlation of CD133, OCT4, and SOX2 in rectal cancer and their association with distant recurrence after chemoradiotherapy
    • Saigusa S, Tanaka K, Toiyama Y, et al.: Correlation of CD133, OCT4, and SOX2 in rectal cancer and their association with distant recurrence after chemoradiotherapy. Ann Surg Oncol 2009; 16: 3488-3498.
    • (2009) Ann Surg Oncol , vol.16 , pp. 3488-3498
    • Saigusa, S.1    Tanaka, K.2    Toiyama, Y.3
  • 11
    • 64949085479 scopus 로고    scopus 로고
    • Oct3/4 and Sox2 are significantly associated with an unfavorable clinical outcome in human esophageal squamous cell carcinoma
    • Wang Q, He W, Lu C, et al.: Oct3/4 and Sox2 are significantly associated with an unfavorable clinical outcome in human esophageal squamous cell carcinoma. Anticancer Res 2009; 29: 1233-1241.
    • (2009) Anticancer Res , vol.29 , pp. 1233-1241
    • Wang, Q.1    He, W.2    Lu, C.3
  • 12
    • 70350641014 scopus 로고    scopus 로고
    • SOX2 is an amplified lineage-survival oncogene in lung and esophageal squamous cell carcinomas
    • Bass AJ, Watanabe H, Mermel CH, et al.: SOX2 is an amplified lineage-survival oncogene in lung and esophageal squamous cell carcinomas. Nat Genet 2009; 41: 1238-1242.
    • (2009) Nat Genet , vol.41 , pp. 1238-1242
    • Bass, A.J.1    Watanabe, H.2    Mermel, C.H.3
  • 13
    • 59849125058 scopus 로고    scopus 로고
    • Oct4A is expressed by a subpopulation of prostate neuroendocrine cells
    • Sotomayor P, Godoy A, Smith GJ, et al.: Oct4A is expressed by a subpopulation of prostate neuroendocrine cells. Prostate 2009; 69: 401-410.
    • (2009) Prostate , vol.69 , pp. 401-410
    • Sotomayor, P.1    Godoy, A.2    Smith, G.J.3
  • 15
    • 72849130699 scopus 로고    scopus 로고
    • Embryonic stem cell-like cells derived from adult human testis
    • Mizrak SC, Chikhovskaya JV, Sadri-Ardekani H, et al.: Embryonic stem cell-like cells derived from adult human testis. Hum Reprod 2009; 25: 158-167.
    • (2009) Hum Reprod , vol.25 , pp. 158-167
    • Mizrak, S.C.1    Chikhovskaya, J.V.2    Sadri-Ardekani, H.3
  • 16
    • 0025291459 scopus 로고
    • Oct-4: A germline-specific transcription factor mapping to the mouse t-complex
    • Scholer HR, Dressler GR, Balling R, et al.: Oct-4: A germline-specific transcription factor mapping to the mouse t-complex. EMBO J 1990; 9: 2185-2195.
    • (1990) EMBO J , vol.9 , pp. 2185-2195
    • Scholer, H.R.1    Dressler, G.R.2    Balling, R.3
  • 17
    • 0025319004 scopus 로고
    • New type of POU domain in germ line-specific protein Oct-4
    • Scholer HR, Ruppert S, Suzuki N, et al.: New type of POU domain in germ line-specific protein Oct-4. Nature 1990; 344: 435-439.
    • (1990) Nature , vol.344 , pp. 435-439
    • Scholer, H.R.1    Ruppert, S.2    Suzuki, N.3
  • 18
    • 0032008045 scopus 로고    scopus 로고
    • Differential expression of the Oct-4 transcription factor during mouse germ cell differentiation
    • Pesce M, Wang X, Wolgemuth DJ, et al.: Differential expression of the Oct-4 transcription factor during mouse germ cell differentiation. Mech Dev 1998; 71: 89-98.
    • (1998) Mech Dev , vol.71 , pp. 89-98
    • Pesce, M.1    Wang, X.2    Wolgemuth, D.J.3
  • 19
    • 34848906585 scopus 로고    scopus 로고
    • Oct4 and its pseudogenes confuse stem cell research
    • Liedtke S, Enczmann J, Waclawczyk S, et al.: Oct4 and its pseudogenes confuse stem cell research. Cell Stem Cell 2007; 1: 364-366.
    • (2007) Cell Stem Cell , vol.1 , pp. 364-366
    • Liedtke, S.1    Enczmann, J.2    Waclawczyk, S.3
  • 20
    • 58049200457 scopus 로고    scopus 로고
    • OCT4 spliced variants are differentially expressed in human pluripotent and nonpluripotent cells
    • Atlasi Y, Mowla SJ, Ziaee SA, et al.: OCT4 spliced variants are differentially expressed in human pluripotent and nonpluripotent cells. Stem Cells 2008; 26: 3068-3074.
    • (2008) Stem Cells , vol.26 , pp. 3068-3074
    • Atlasi, Y.1    Mowla, S.J.2    Ziaee, S.A.3
  • 21
    • 0027091176 scopus 로고
    • Evolutionarily conserved promoter motifs and enhancer organization in the mouse gene encoding the IIB myosin heavy chain isoform expressed in adult fast skeletal muscle
    • Takeda S, North DL, Lakich MM, et al.: Evolutionarily conserved promoter motifs and enhancer organization in the mouse gene encoding the IIB myosin heavy chain isoform expressed in adult fast skeletal muscle. C R Acad Sci III 1992; 315: 467-472.
    • (1992) C R Acad Sci III , vol.315 , pp. 467-472
    • Takeda, S.1    North, D.L.2    Lakich, M.M.3
  • 22
    • 33845930820 scopus 로고    scopus 로고
    • The human OCT-4 isoforms differ in their ability to confer self-renewal
    • Lee J, Kim HK, Rho JY, et al.: The human OCT-4 isoforms differ in their ability to confer self-renewal. J Biol Chem 2006; 281: 33554-33565.
    • (2006) J Biol Chem , vol.281 , pp. 33554-33565
    • Lee, J.1    Kim, H.K.2    Rho, J.Y.3
  • 23
    • 34047169674 scopus 로고    scopus 로고
    • Stem cell marker OCT3/4 in tumor biology and germ cell tumor diagnostics: History and future
    • de Jong J, Looijenga LH:, Stem cell marker OCT3/4 in tumor biology and germ cell tumor diagnostics: History and future. Crit Rev Oncog 2006; 12: 171-203.
    • (2006) Crit Rev Oncog , vol.12 , pp. 171-203
    • De Jong, J.1    Looijenga, L.2
  • 24
    • 33846000940 scopus 로고    scopus 로고
    • POU5F1 isoforms show different expression patterns in human embryonic stem cells and preimplantation embryos
    • Cauffman G, Liebaers I, Van Steirteghem A, et al.: POU5F1 isoforms show different expression patterns in human embryonic stem cells and preimplantation embryos. Stem Cells 2006; 24: 2685-2691.
    • (2006) Stem Cells , vol.24 , pp. 2685-2691
    • Cauffman, G.1    Liebaers, I.2    Van Steirteghem, A.3
  • 25
    • 67649612847 scopus 로고    scopus 로고
    • Alternative translation of OCT4 by an internal ribosome entry site and its novel function in stress response
    • Wang X, Zhao Y, Xiao Z, et al.: Alternative translation of OCT4 by an internal ribosome entry site and its novel function in stress response. Stem Cells 2009; 27: 1265-1275.
    • (2009) Stem Cells , vol.27 , pp. 1265-1275
    • Wang, X.1    Zhao, Y.2    Xiao, Z.3
  • 26
    • 70350234775 scopus 로고    scopus 로고
    • OCT4B expression in PBMNCs suggests the existence of an alternative OCT4 promoter
    • Papamichos SI, Lambropoulos AF, Kotoula V:, OCT4B expression in PBMNCs suggests the existence of an alternative OCT4 promoter. Genes Chromosomes Cancer 2009; 48: 1112-1114.
    • (2009) Genes Chromosomes Cancer , vol.48 , pp. 1112-1114
    • Papamichos, S.I.1    Lambropoulos, A.F.2    Kotoula, V.3
  • 27
    • 64549157524 scopus 로고    scopus 로고
    • OCT4B1 isoform: The novel OCT4 alternative spliced variant as a putative marker of stemness
    • Papamichos SI, Kotoula V, Tarlatzis BC, et al.: OCT4B1 isoform: The novel OCT4 alternative spliced variant as a putative marker of stemness. Mol Hum Reprod 2009; 15: 269-270.
    • (2009) Mol Hum Reprod , vol.15 , pp. 269-270
    • Papamichos, S.I.1    Kotoula, V.2    Tarlatzis, B.C.3
  • 28
    • 67049172213 scopus 로고    scopus 로고
    • The expression of pluripotency marker Oct 3/4 in prostate cancer and benign prostate hyperplasia
    • Monsef N, Soller M, Isaksson M, et al.: The expression of pluripotency marker Oct 3/4 in prostate cancer and benign prostate hyperplasia. Prostate 2009; 69: 909-916.
    • (2009) Prostate , vol.69 , pp. 909-916
    • Monsef, N.1    Soller, M.2    Isaksson, M.3
  • 29
    • 0037547198 scopus 로고    scopus 로고
    • POU5F1 (OCT3/4) identifies cells with pluripotent potential in human germ cell tumors
    • Looijenga LH, Stoop H, de Leeuw HP, et al.: POU5F1 (OCT3/4) identifies cells with pluripotent potential in human germ cell tumors. Cancer Res 2003; 63: 2244-2250.
    • (2003) Cancer Res , vol.63 , pp. 2244-2250
    • Looijenga, L.H.1    Stoop, H.2    De Leeuw, H.P.3
  • 30
    • 66349097526 scopus 로고    scopus 로고
    • Oct4, a novel marker for human gastric cancer
    • Chen Z, Xu WR, Qian H, et al.: Oct4, a novel marker for human gastric cancer. J Surg Oncol 2009; 99: 414-419.
    • (2009) J Surg Oncol , vol.99 , pp. 414-419
    • Chen, Z.1    Xu, W.R.2    Qian, H.3
  • 31
    • 33846228391 scopus 로고    scopus 로고
    • OCT4: Biological functions and clinical applications as a marker of germ cell neoplasia
    • Cheng L, Sung MT, Cossu-Rocca P, et al.: OCT4: Biological functions and clinical applications as a marker of germ cell neoplasia. J Pathol 2007; 211: 1-9.
    • (2007) J Pathol , vol.211 , pp. 1-9
    • Cheng, L.1    Sung, M.T.2    Cossu-Rocca, P.3
  • 32
    • 33847654696 scopus 로고    scopus 로고
    • OCT-4, an embryonic stem cell marker, is highly expressed in bladder cancer
    • Atlasi Y, Mowla SJ, Ziaee SA, et al.: OCT-4, an embryonic stem cell marker, is highly expressed in bladder cancer. Int J Cancer 2007; 120: 1598-1602.
    • (2007) Int J Cancer , vol.120 , pp. 1598-1602
    • Atlasi, Y.1    Mowla, S.J.2    Ziaee, S.A.3
  • 33
    • 66249129372 scopus 로고    scopus 로고
    • Oct4 is expressed in human gliomas and promotes colony formation in glioma cells
    • Du Z, Jia D, Liu S, et al.: Oct4 is expressed in human gliomas and promotes colony formation in glioma cells. Glia 2009; 57: 724-733.
    • (2009) Glia , vol.57 , pp. 724-733
    • Du, Z.1    Jia, D.2    Liu, S.3
  • 34
    • 13844280894 scopus 로고    scopus 로고
    • Oct4 expression in adult human stem cells: Evidence in support of the stem cell theory of carcinogenesis
    • Tai MH, Chang CC, Kiupel M, et al.: Oct4 expression in adult human stem cells: Evidence in support of the stem cell theory of carcinogenesis. Carcinogenesis 2005; 26: 495-502.
    • (2005) Carcinogenesis , vol.26 , pp. 495-502
    • Tai, M.H.1    Chang, C.C.2    Kiupel, M.3
  • 35
    • 43049148752 scopus 로고    scopus 로고
    • Absence of OCT4 expression in somatic tumor cell lines
    • Cantz T, Key G, Bleidissel M, et al.: Absence of OCT4 expression in somatic tumor cell lines. Stem Cells 2008; 26: 692-697.
    • (2008) Stem Cells , vol.26 , pp. 692-697
    • Cantz, T.1    Key, G.2    Bleidissel, M.3
  • 36
    • 38349076677 scopus 로고    scopus 로고
    • Revisiting OCT4 expression in peripheral blood mononuclear cells
    • Kotoula V, Papamichos SI, Lambropoulos AF:, Revisiting OCT4 expression in peripheral blood mononuclear cells. Stem Cells 2008; 26: 290-291.
    • (2008) Stem Cells , vol.26 , pp. 290-291
    • Kotoula, V.1    Papamichos, S.I.2    Lambropoulos, A.3
  • 37
    • 49149121054 scopus 로고    scopus 로고
    • Oct4 expression revisited: Potential pitfalls for data misinterpretation in stem cell research
    • Liedtke S, Stephan M, Kogler G:, Oct4 expression revisited: Potential pitfalls for data misinterpretation in stem cell research. Biol Chem 2008; 389: 845-850.
    • (2008) Biol Chem , vol.389 , pp. 845-850
    • Liedtke, S.1    Stephan, M.2    Kogler, G.3
  • 38
    • 27144549266 scopus 로고    scopus 로고
    • Oct4 pseudogenes are transcribed in cancers
    • Suo G, Han J, Wang X, et al.: Oct4 pseudogenes are transcribed in cancers. Biochem Biophys Res Commun 2005; 337: 1047-1051.
    • (2005) Biochem Biophys Res Commun , vol.337 , pp. 1047-1051
    • Suo, G.1    Han, J.2    Wang, X.3
  • 39
    • 70349333227 scopus 로고    scopus 로고
    • The evolutionary consequences of erroneous protein synthesis
    • Drummond DA, Wilke CO:, The evolutionary consequences of erroneous protein synthesis. Nat Rev Genet 2009; 10: 715-724.
    • (2009) Nat Rev Genet , vol.10 , pp. 715-724
    • Drummond, D.A.1    Wilke, C.2
  • 40
    • 42049123664 scopus 로고    scopus 로고
    • The pluripotency regulator Oct4: A role in somatic stem cells
    • Lengner CJ, Welstead GG, Jaenisch R:, The pluripotency regulator Oct4: A role in somatic stem cells ? Cell Cycle 2008; 7: 725-728.
    • (2008) Cell Cycle , vol.7 , pp. 725-728
    • Lengner, C.J.1    Welstead, G.G.2    Jaenisch, R.3
  • 41
    • 33847796969 scopus 로고    scopus 로고
    • From adult stem cells to cancer stem cells: Oct-4 Gene, cell-cell communication, and hormones during tumor promotion
    • Trosko JE:, From adult stem cells to cancer stem cells: Oct-4 Gene, cell-cell communication, and hormones during tumor promotion. Ann NY Acad Sci 2006; 1089: 36-58.
    • (2006) Ann NY Acad Sci , vol.1089 , pp. 36-58
    • Trosko, J.1
  • 42
    • 34848874100 scopus 로고    scopus 로고
    • Oct4 expression is not required for mouse somatic stem cell self-renewal
    • Lengner CJ, Camargo FD, Hochedlinger K, et al.: Oct4 expression is not required for mouse somatic stem cell self-renewal. Cell Stem Cell 2007; 1: 403-415.
    • (2007) Cell Stem Cell , vol.1 , pp. 403-415
    • Lengner, C.J.1    Camargo, F.D.2    Hochedlinger, K.3
  • 43
    • 84934438357 scopus 로고    scopus 로고
    • Colony forming unit assays for MSCs
    • Pochampally R:, Colony forming unit assays for MSCs. Methods Mol Biol 2008; 449: 83-91.
    • (2008) Methods Mol Biol , vol.449 , pp. 83-91
    • Pochampally, R.1
  • 44
    • 34547180496 scopus 로고    scopus 로고
    • Oct-4 expression in adult human differentiated cells challenges its role as a pure stem cell marker
    • Zangrossi S, Marabese M, Broggini M, et al.: Oct-4 expression in adult human differentiated cells challenges its role as a pure stem cell marker. Stem Cells 2007; 25: 1675-1680.
    • (2007) Stem Cells , vol.25 , pp. 1675-1680
    • Zangrossi, S.1    Marabese, M.2    Broggini, M.3
  • 45
    • 0037520693 scopus 로고    scopus 로고
    • Stem cell pluripotency and transcription factor Oct4
    • Pan GJ, Chang ZY, Scholer HR, et al.: Stem cell pluripotency and transcription factor Oct4. Cell Res 2002; 12: 321-329.
    • (2002) Cell Res , vol.12 , pp. 321-329
    • Pan, G.J.1    Chang, Z.Y.2    Scholer, H.R.3
  • 46
    • 0344063368 scopus 로고    scopus 로고
    • Oct-3/4 is a dose-dependent oncogenic fate determinant
    • Gidekel S, Pizov G, Bergman Y, et al.: Oct-3/4 is a dose-dependent oncogenic fate determinant. Cancer Cell 2003; 4: 361-370.
    • (2003) Cancer Cell , vol.4 , pp. 361-370
    • Gidekel, S.1    Pizov, G.2    Bergman, Y.3
  • 47
    • 18844392836 scopus 로고    scopus 로고
    • Ectopic expression of Oct-4 blocks progenitor-cell differentiation and causes dysplasia in epithelial tissues
    • Hochedlinger K, Yamada Y, Beard C, et al.: Ectopic expression of Oct-4 blocks progenitor-cell differentiation and causes dysplasia in epithelial tissues. Cell 2005; 121: 465-477.
    • (2005) Cell , vol.121 , pp. 465-477
    • Hochedlinger, K.1    Yamada, Y.2    Beard, C.3
  • 48
    • 35348882023 scopus 로고    scopus 로고
    • Aberrant expression and distribution of the OCT-4 transcription factor in seminomas
    • Cheng CJ, Wu YC, Shu JA, et al.: Aberrant expression and distribution of the OCT-4 transcription factor in seminomas. J Biomed Sci 2007; 14: 797-807.
    • (2007) J Biomed Sci , vol.14 , pp. 797-807
    • Cheng, C.J.1    Wu, Y.C.2    Shu, J.A.3
  • 49
    • 34547113757 scopus 로고    scopus 로고
    • Sumoylation of Oct4 enhances its stability, DNA binding, and transactivation
    • Wei F, Scholer HR, Atchison ML:, Sumoylation of Oct4 enhances its stability, DNA binding, and transactivation. J Biol Chem 2007; 282: 21551-21560.
    • (2007) J Biol Chem , vol.282 , pp. 21551-21560
    • Wei, F.1    Scholer, H.R.2    Atchison, M.3
  • 50
    • 33845888271 scopus 로고    scopus 로고
    • Triggering neural differentiation of ES cells by subtype switching of importin-alpha
    • Yasuhara N, Shibazaki N, Tanaka S, et al.: Triggering neural differentiation of ES cells by subtype switching of importin-alpha. Nat Cell Biol 2007; 9: 72-79.
    • (2007) Nat Cell Biol , vol.9 , pp. 72-79
    • Yasuhara, N.1    Shibazaki, N.2    Tanaka, S.3
  • 51
    • 4344707501 scopus 로고    scopus 로고
    • Identification of a nuclear localization signal in OCT4 and generation of a dominant negative mutant by its ablation
    • Pan G, Qin B, Liu N, et al.: Identification of a nuclear localization signal in OCT4 and generation of a dominant negative mutant by its ablation. J Biol Chem 2004; 279: 37013-37020.
    • (2004) J Biol Chem , vol.279 , pp. 37013-37020
    • Pan, G.1    Qin, B.2    Liu, N.3


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