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Published in: Cancer Immunology, Immunotherapy 12/2010

Open Access 01-12-2010 | Original Article

In acute myeloid leukemia, B7-H1 (PD-L1) protection of blasts from cytotoxic T cells is induced by TLR ligands and interferon-gamma and can be reversed using MEK inhibitors

Authors: Céline Berthon, Virginie Driss, Jizhong Liu, Klaudia Kuranda, Xavier Leleu, Nathalie Jouy, Dominique Hetuin, Bruno Quesnel

Published in: Cancer Immunology, Immunotherapy | Issue 12/2010

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Abstract

B7-H1 (PD-L1) is a B7-related protein that inhibits T-cell responses. B7-H1 participates in the immunoescape of cancer cells and is also involved in the long-term persistence of leukemic cells in a mouse model of leukemia. B7-H1 can be constitutively expressed by cancer cells, but is also induced by various stimuli. Therefore, we examined the constitutive and inducible expression of B7-H1 and the consequences of this expression in human acute myeloid leukemia (AML). We analyzed B7-H1 expression in a cohort of 79 patients with AML. In addition, we studied blast cells after incubation with interferon-gamma or toll-like receptors (TLR) ligands. Finally, we evaluated functionality of cytotoxic T-cell activity against blast cells. Expression of B7-H1 upon diagnosis was high in 18% of patients. Expression of TLR2, 4 and 9 was detected in one-third of AML samples. Expression of TLR2 and TLR4 ligands or IFN-γ induced by B7-H1 was found to protect AML cells from CTL-mediated lysis. Spontaneous B7-H1 expression was also found to be enhanced upon relapse in some patients. MEK inhibitors, including UO126 and AZD6244, reduced B7-H1 expression and restored CTL-mediated lysis of blast cells. In AML, B7-H1 expression by blasts represents a possible immune escape mechanism. The inducibility of B7-H1 expression by IFN-γ or TLR ligands suggests that various stimuli, either produced during the immune response against leukemia cells or released by infectious microorganisms, could protect leukemic cells from T cells. The efficacy of MEK inhibitors against B7-H1-mediated inhibition of CTLs suggests a possible cancer immunotherapy strategy using targeted drugs.
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Literature
1.
go back to reference el-Shami K, Smith BD (2008) Immunotherapy for myeloid leukemias: current status and future directions. Leukemia 22:1658–1664CrossRefPubMed el-Shami K, Smith BD (2008) Immunotherapy for myeloid leukemias: current status and future directions. Leukemia 22:1658–1664CrossRefPubMed
2.
go back to reference Corm S, Berthon C, Imbenotte M, Biggio V, Lhermitte M, Dupont C, Briche I, Quesnel B (2009) Indoleamine 2, 3-dioxygenase activity of acute myeloid leukemia cells can be measured from patients’ sera by HPLC and is inducible by IFN-gamma. Leuk Res 33:490–494CrossRefPubMed Corm S, Berthon C, Imbenotte M, Biggio V, Lhermitte M, Dupont C, Briche I, Quesnel B (2009) Indoleamine 2, 3-dioxygenase activity of acute myeloid leukemia cells can be measured from patients’ sera by HPLC and is inducible by IFN-gamma. Leuk Res 33:490–494CrossRefPubMed
3.
go back to reference Curti A, Pandolfi S, Valzasina B, Aluigi M, Isidori A, Ferri E, Salvestrini V, Bonanno G, Rutella S, Durelli I, Horenstein AL, Fiore F, Massaia M, Colombo MP, Baccarani M, Lemoli RM (2007) Modulation of tryptophan catabolism by human leukemic cells results in the conversion of CD25- into CD25+ T regulatory cells. Blood 109:2871–2877PubMed Curti A, Pandolfi S, Valzasina B, Aluigi M, Isidori A, Ferri E, Salvestrini V, Bonanno G, Rutella S, Durelli I, Horenstein AL, Fiore F, Massaia M, Colombo MP, Baccarani M, Lemoli RM (2007) Modulation of tryptophan catabolism by human leukemic cells results in the conversion of CD25- into CD25+ T regulatory cells. Blood 109:2871–2877PubMed
4.
go back to reference Saudemont A, Hamrouni A, Marchetti P, Liu J, Jouy N, Hetuin D, Colucci F, Quesnel B (2007) Dormant tumor cells develop cross-resistance to apoptosis induced by CTLs or imatinib mesylate via methylation of suppressor of cytokine signaling 1. Cancer Res 67:4491–4498CrossRefPubMed Saudemont A, Hamrouni A, Marchetti P, Liu J, Jouy N, Hetuin D, Colucci F, Quesnel B (2007) Dormant tumor cells develop cross-resistance to apoptosis induced by CTLs or imatinib mesylate via methylation of suppressor of cytokine signaling 1. Cancer Res 67:4491–4498CrossRefPubMed
5.
go back to reference Saudemont A, Jouy N, Hetuin D, Quesnel B (2005) NK cells that are activated by CXCL10 can kill dormant tumor cells that resist CTL-mediated lysis and can express B7-H1 that stimulates T cells. Blood 105:2428–2435CrossRefPubMed Saudemont A, Jouy N, Hetuin D, Quesnel B (2005) NK cells that are activated by CXCL10 can kill dormant tumor cells that resist CTL-mediated lysis and can express B7-H1 that stimulates T cells. Blood 105:2428–2435CrossRefPubMed
6.
go back to reference Saudemont A, Quesnel B (2004) In a model of tumor dormancy, long-term persistent leukemic cells have increased B7-H1 and B7.1 expression and resist CTL-mediated lysis. Blood 104:2124–2133CrossRefPubMed Saudemont A, Quesnel B (2004) In a model of tumor dormancy, long-term persistent leukemic cells have increased B7-H1 and B7.1 expression and resist CTL-mediated lysis. Blood 104:2124–2133CrossRefPubMed
8.
go back to reference Liu J, Joha S, Idziorek T, Corm S, Hetuin D, Philippe N, Preudhomme C, Quesnel B (2008) BCR-ABL mutants spread resistance to non-mutated cells through a paracrine mechanism. Leukemia 22:791–799CrossRefPubMed Liu J, Joha S, Idziorek T, Corm S, Hetuin D, Philippe N, Preudhomme C, Quesnel B (2008) BCR-ABL mutants spread resistance to non-mutated cells through a paracrine mechanism. Leukemia 22:791–799CrossRefPubMed
9.
go back to reference Wei S, Shreiner AB, Takeshita N, Chen L, Zou W, Chang AE (2008) Tumor-induced immune suppression of in vivo effector T-cell priming is mediated by the B7-H1/PD-1 axis and transforming growth factor beta. Cancer Res 68:5432–5438CrossRefPubMed Wei S, Shreiner AB, Takeshita N, Chen L, Zou W, Chang AE (2008) Tumor-induced immune suppression of in vivo effector T-cell priming is mediated by the B7-H1/PD-1 axis and transforming growth factor beta. Cancer Res 68:5432–5438CrossRefPubMed
10.
go back to reference Keir ME, Butte MJ, Freeman GJ, Sharpe AH (2008) PD-1 and its ligands in tolerance and immunity. Annu Rev Immunol 26:677–704CrossRefPubMed Keir ME, Butte MJ, Freeman GJ, Sharpe AH (2008) PD-1 and its ligands in tolerance and immunity. Annu Rev Immunol 26:677–704CrossRefPubMed
11.
go back to reference Butte MJ, Pena-Cruz V, Kim MJ, Freeman GJ, Sharpe AH (2008) Interaction of human PD-L1 and B7-1. Mol Immunol 45:3567–3572CrossRefPubMed Butte MJ, Pena-Cruz V, Kim MJ, Freeman GJ, Sharpe AH (2008) Interaction of human PD-L1 and B7-1. Mol Immunol 45:3567–3572CrossRefPubMed
12.
go back to reference Zou W, Chen L (2008) Inhibitory B7-family molecules in the tumour microenvironment. Nature Rev 8:467–477CrossRef Zou W, Chen L (2008) Inhibitory B7-family molecules in the tumour microenvironment. Nature Rev 8:467–477CrossRef
13.
go back to reference Liu J, Hamrouni A, Wolowiec D, Coiteux V, Kuliczkowski K, Hetuin D, Saudemont A, Quesnel B (2007) Plasma cells from multiple myeloma patients express B7-H1 (PD-L1) and increase expression after stimulation with IFN-{gamma} and TLR ligands via a MyD88-, TRAF6-, and MEK-dependent pathway. Blood 110:296–304CrossRefPubMed Liu J, Hamrouni A, Wolowiec D, Coiteux V, Kuliczkowski K, Hetuin D, Saudemont A, Quesnel B (2007) Plasma cells from multiple myeloma patients express B7-H1 (PD-L1) and increase expression after stimulation with IFN-{gamma} and TLR ligands via a MyD88-, TRAF6-, and MEK-dependent pathway. Blood 110:296–304CrossRefPubMed
14.
go back to reference Vereecque R, Buffenoir G, Gonzalez R, Preudhomme C, Fenaux P, Quesnel B (1999) A new murine aggressive leukemic model. Leuk Res 23:415–416CrossRefPubMed Vereecque R, Buffenoir G, Gonzalez R, Preudhomme C, Fenaux P, Quesnel B (1999) A new murine aggressive leukemic model. Leuk Res 23:415–416CrossRefPubMed
15.
go back to reference Saudemont A, Corm S, Wickham T, Hetuin D, Quesnel B (2005) Induction of leukemia-specific CD8+ cytotoxic T cells with autologous myeloid leukemic cells maturated with a fiber-modified adenovirus encoding TNF-alpha. Mol Ther 11:950–959CrossRefPubMed Saudemont A, Corm S, Wickham T, Hetuin D, Quesnel B (2005) Induction of leukemia-specific CD8+ cytotoxic T cells with autologous myeloid leukemic cells maturated with a fiber-modified adenovirus encoding TNF-alpha. Mol Ther 11:950–959CrossRefPubMed
16.
go back to reference Tamura H, Dan K, Tamada K, Nakamura K, Shioi Y, Hyodo H, Wang SD, Dong H, Chen L, Ogata K (2005) Expression of functional B7-H2 and B7.2 costimulatory molecules and their prognostic implications in de novo acute myeloid leukemia. Clin Cancer Res 11:5708–5717CrossRefPubMed Tamura H, Dan K, Tamada K, Nakamura K, Shioi Y, Hyodo H, Wang SD, Dong H, Chen L, Ogata K (2005) Expression of functional B7-H2 and B7.2 costimulatory molecules and their prognostic implications in de novo acute myeloid leukemia. Clin Cancer Res 11:5708–5717CrossRefPubMed
17.
go back to reference Vereecque R, Buffenoir G, Gonzalez R, Cambier N, Hetuin D, Bauters F, Fenaux P, Quesnel B (2000) Gamma-ray irradiation induces B7.1 expression in myeloid leukaemic cells. Br J Haematol 108:825–831CrossRefPubMed Vereecque R, Buffenoir G, Gonzalez R, Cambier N, Hetuin D, Bauters F, Fenaux P, Quesnel B (2000) Gamma-ray irradiation induces B7.1 expression in myeloid leukaemic cells. Br J Haematol 108:825–831CrossRefPubMed
18.
go back to reference Vereecque R, Saudemont A, Quesnel B (2004) Cytosine arabinoside induces costimulatory molecule expression in acute myeloid leukemia cells. Leukemia 18:1223–1230CrossRefPubMed Vereecque R, Saudemont A, Quesnel B (2004) Cytosine arabinoside induces costimulatory molecule expression in acute myeloid leukemia cells. Leukemia 18:1223–1230CrossRefPubMed
19.
go back to reference Parsa AT, Waldron JS, Panner A, Crane CA, Parney IF, Barry JJ, Cachola KE, Murray JC, Tihan T, Jensen MC, Mischel PS, Stokoe D, Pieper RO (2007) Loss of tumor suppressor PTEN function increases B7-H1 expression and immunoresistance in glioma. Nat Med 13:84–88CrossRefPubMed Parsa AT, Waldron JS, Panner A, Crane CA, Parney IF, Barry JJ, Cachola KE, Murray JC, Tihan T, Jensen MC, Mischel PS, Stokoe D, Pieper RO (2007) Loss of tumor suppressor PTEN function increases B7-H1 expression and immunoresistance in glioma. Nat Med 13:84–88CrossRefPubMed
20.
go back to reference Stripecke R, Levine AM, Pullarkat V, Cardoso AA (2002) Immunotherapy with acute leukemia cells modified into antigen-presenting cells: ex vivo culture and gene transfer methods. Leukemia 16:1974–1983CrossRefPubMed Stripecke R, Levine AM, Pullarkat V, Cardoso AA (2002) Immunotherapy with acute leukemia cells modified into antigen-presenting cells: ex vivo culture and gene transfer methods. Leukemia 16:1974–1983CrossRefPubMed
21.
go back to reference Buggins AG, Lea N, Gaken J, Darling D, Farzaneh F, Mufti GJ, Hirst WJ (1999) Effect of costimulation and the microenvironment on antigen presentation by leukemic cells. Blood 94:3479–3490PubMed Buggins AG, Lea N, Gaken J, Darling D, Farzaneh F, Mufti GJ, Hirst WJ (1999) Effect of costimulation and the microenvironment on antigen presentation by leukemic cells. Blood 94:3479–3490PubMed
22.
go back to reference Barrett AJ, Savani BN (2009) Does chemotherapy modify the immune surveillance of hematological malignancies? Leukemia 23:53–58CrossRefPubMed Barrett AJ, Savani BN (2009) Does chemotherapy modify the immune surveillance of hematological malignancies? Leukemia 23:53–58CrossRefPubMed
23.
go back to reference Butte MJ, Keir ME, Phamduy TB, Sharpe AH, Freeman GJ (2007) Programmed death-1 ligand 1 interacts specifically with the B7-1 costimulatory molecule to inhibit T cell responses. Immunity 27:111–122CrossRefPubMed Butte MJ, Keir ME, Phamduy TB, Sharpe AH, Freeman GJ (2007) Programmed death-1 ligand 1 interacts specifically with the B7-1 costimulatory molecule to inhibit T cell responses. Immunity 27:111–122CrossRefPubMed
24.
go back to reference Xerri L, Chetaille B, Seriari N, Attias C, Guillaume Y, Arnoulet C, Olive D (2008) Programmed death 1 is a marker of angioimmunoblastic T-cell lymphoma and B-cell small lymphocytic lymphoma/chronic lymphocytic leukemia. Hum Pathol 39:1050–1058CrossRefPubMed Xerri L, Chetaille B, Seriari N, Attias C, Guillaume Y, Arnoulet C, Olive D (2008) Programmed death 1 is a marker of angioimmunoblastic T-cell lymphoma and B-cell small lymphocytic lymphoma/chronic lymphocytic leukemia. Hum Pathol 39:1050–1058CrossRefPubMed
25.
go back to reference Kozako T, Yoshimitsu M, Fujiwara H, Masamoto I, Horai S, White Y, Akimoto M, Suzuki S, Matsushita K, Uozumi K, Tei C, Arima N (2009) PD-1/PD-L1 expression in human T-cell leukemia virus type 1 carriers and adult T-cell leukemia/lymphoma patients. Leukemia 23:375–382CrossRefPubMed Kozako T, Yoshimitsu M, Fujiwara H, Masamoto I, Horai S, White Y, Akimoto M, Suzuki S, Matsushita K, Uozumi K, Tei C, Arima N (2009) PD-1/PD-L1 expression in human T-cell leukemia virus type 1 carriers and adult T-cell leukemia/lymphoma patients. Leukemia 23:375–382CrossRefPubMed
26.
go back to reference Salih HR, Wintterle S, Krusch M, Kroner A, Huang YH, Chen L, Wiendl H (2006) The role of leukemia-derived B7-H1 (PD-L1) in tumor-T-cell interactions in humans. Exp Hematol 34:888–894CrossRefPubMed Salih HR, Wintterle S, Krusch M, Kroner A, Huang YH, Chen L, Wiendl H (2006) The role of leukemia-derived B7-H1 (PD-L1) in tumor-T-cell interactions in humans. Exp Hematol 34:888–894CrossRefPubMed
27.
go back to reference Curiel TJ, Wei S, Dong H, Alvarez X, Cheng P, Mottram P, Krzysiek R, Knutson KL, Daniel B, Zimmermann MC, David O, Burow M, Gordon A, Dhurandhar N, Myers L, Berggren R, Hemminki A, Alvarez RD, Emilie D, Curiel DT, Chen L, Zou W (2003) Blockade of B7-H1 improves myeloid dendritic cell-mediated antitumor immunity. Nat Med 9:562–567CrossRefPubMed Curiel TJ, Wei S, Dong H, Alvarez X, Cheng P, Mottram P, Krzysiek R, Knutson KL, Daniel B, Zimmermann MC, David O, Burow M, Gordon A, Dhurandhar N, Myers L, Berggren R, Hemminki A, Alvarez RD, Emilie D, Curiel DT, Chen L, Zou W (2003) Blockade of B7-H1 improves myeloid dendritic cell-mediated antitumor immunity. Nat Med 9:562–567CrossRefPubMed
28.
go back to reference Brown JA, Dorfman DM, Ma FR, Sullivan EL, Munoz O, Wood CR, Greenfield EA, Freeman GJ (2003) Blockade of programmed death-1 ligands on dendritic cells enhances T cell activation and cytokine production. J Immunol 170:1257–1266PubMed Brown JA, Dorfman DM, Ma FR, Sullivan EL, Munoz O, Wood CR, Greenfield EA, Freeman GJ (2003) Blockade of programmed death-1 ligands on dendritic cells enhances T cell activation and cytokine production. J Immunol 170:1257–1266PubMed
29.
go back to reference Dong H, Strome SE, Salomao DR, Tamura H, Hirano F, Flies DB, Roche PC, Lu J, Zhu G, Tamada K, Lennon VA, Celis E, Chen L (2002) Tumor-associated B7-H1 promotes T-cell apoptosis: a potential mechanism of immune evasion. Nat Med 8:793–800PubMed Dong H, Strome SE, Salomao DR, Tamura H, Hirano F, Flies DB, Roche PC, Lu J, Zhu G, Tamada K, Lennon VA, Celis E, Chen L (2002) Tumor-associated B7-H1 promotes T-cell apoptosis: a potential mechanism of immune evasion. Nat Med 8:793–800PubMed
30.
go back to reference Allam JP, WM Peng, T Appel, M Wenghoefer, B Niederhagen, T Bieber, S Berge and N Novak (2008) Toll-like receptor 4 ligation enforces tolerogenic properties of oral mucosal Langerhans cells. J Allerg Clin Immunol 121:368-374 e361 Allam JP, WM Peng, T Appel, M Wenghoefer, B Niederhagen, T Bieber, S Berge and N Novak (2008) Toll-like receptor 4 ligation enforces tolerogenic properties of oral mucosal Langerhans cells. J Allerg Clin Immunol 121:368-374 e361
31.
go back to reference Huang B, Zhao J, Li H, He KL, Chen Y, Chen SH, Mayer L, Unkeless JC, Xiong H (2005) Toll-like receptors on tumor cells facilitate evasion of immune surveillance. Cancer Res 65:5009–5014CrossRefPubMed Huang B, Zhao J, Li H, He KL, Chen Y, Chen SH, Mayer L, Unkeless JC, Xiong H (2005) Toll-like receptors on tumor cells facilitate evasion of immune surveillance. Cancer Res 65:5009–5014CrossRefPubMed
32.
go back to reference Chiron D, Bekeredjian-Ding I, Pellat-Deceunynck C, Bataille R, Jego G (2008) Toll-like receptors: lessons to learn from normal and malignant human B cells. Blood 112:2205–2213CrossRefPubMed Chiron D, Bekeredjian-Ding I, Pellat-Deceunynck C, Bataille R, Jego G (2008) Toll-like receptors: lessons to learn from normal and malignant human B cells. Blood 112:2205–2213CrossRefPubMed
33.
go back to reference Webb RN, Cruse JM, Lewis RE (2007) Differential cytokine and Toll-like receptor expression in leukemia. Exp Mol Pathol 83:464–470CrossRefPubMed Webb RN, Cruse JM, Lewis RE (2007) Differential cytokine and Toll-like receptor expression in leukemia. Exp Mol Pathol 83:464–470CrossRefPubMed
34.
go back to reference Spaner DE, Shi Y, White D, Mena J, Hammond C, Tomic J, He L, Tomai MA, Miller RL, Booth J, Radvanyi L (2006) Immunomodulatory effects of Toll-like receptor-7 activation on chronic lymphocytic leukemia cells. Leukemia 20:286–295CrossRefPubMed Spaner DE, Shi Y, White D, Mena J, Hammond C, Tomic J, He L, Tomai MA, Miller RL, Booth J, Radvanyi L (2006) Immunomodulatory effects of Toll-like receptor-7 activation on chronic lymphocytic leukemia cells. Leukemia 20:286–295CrossRefPubMed
35.
go back to reference Abbas S, Abu-Amer Y (2003) Dominant-negative IkappaB facilitates apoptosis of osteoclasts by tumor necrosis factor-alpha. J Biol Chem 278:20077–20082CrossRefPubMed Abbas S, Abu-Amer Y (2003) Dominant-negative IkappaB facilitates apoptosis of osteoclasts by tumor necrosis factor-alpha. J Biol Chem 278:20077–20082CrossRefPubMed
36.
go back to reference Spaner DE, Foley R, Galipeau J, Bramson J (2008) Obstacles to effective Toll-like receptor agonist therapy for hematologic malignancies. Oncogene 27:208–217CrossRefPubMed Spaner DE, Foley R, Galipeau J, Bramson J (2008) Obstacles to effective Toll-like receptor agonist therapy for hematologic malignancies. Oncogene 27:208–217CrossRefPubMed
37.
go back to reference Spaner DE, Masellis A (2007) Toll-like receptor agonists in the treatment of chronic lymphocytic leukemia. Leukemia 21:53–60CrossRefPubMed Spaner DE, Masellis A (2007) Toll-like receptor agonists in the treatment of chronic lymphocytic leukemia. Leukemia 21:53–60CrossRefPubMed
38.
go back to reference Corthals SL, Wynne K, She K, Shimizu H, Curman D, Garbutt K, Reid GS (2006) Differential immune effects mediated by Toll-like receptors stimulation in precursor B-cell acute lymphoblastic leukaemia. Br J Haematol 132:452–458PubMed Corthals SL, Wynne K, She K, Shimizu H, Curman D, Garbutt K, Reid GS (2006) Differential immune effects mediated by Toll-like receptors stimulation in precursor B-cell acute lymphoblastic leukaemia. Br J Haematol 132:452–458PubMed
39.
go back to reference Lehner M, Bailo M, Stachel D, Roesler W, Parolini O, Holter W (2007) Caspase-8 dependent apoptosis induction in malignant myeloid cells by TLR stimulation in the presence of IFN-alpha. Leuk Res 31:1729–1735CrossRefPubMed Lehner M, Bailo M, Stachel D, Roesler W, Parolini O, Holter W (2007) Caspase-8 dependent apoptosis induction in malignant myeloid cells by TLR stimulation in the presence of IFN-alpha. Leuk Res 31:1729–1735CrossRefPubMed
40.
go back to reference Marcucci G, Radmacher MD, Maharry K, Mrozek K, Ruppert AS, Paschka P, Vukosavljevic T, Whitman SP, Baldus CD, Langer C, Liu CG, Carroll AJ, Powell BL, Garzon R, Croce CM, Kolitz JE, Caligiuri MA, Larson RA, Bloomfield CD (2008) MicroRNA expression in cytogenetically normal acute myeloid leukemia. N Engl J Med 358:1919–1928CrossRefPubMed Marcucci G, Radmacher MD, Maharry K, Mrozek K, Ruppert AS, Paschka P, Vukosavljevic T, Whitman SP, Baldus CD, Langer C, Liu CG, Carroll AJ, Powell BL, Garzon R, Croce CM, Kolitz JE, Caligiuri MA, Larson RA, Bloomfield CD (2008) MicroRNA expression in cytogenetically normal acute myeloid leukemia. N Engl J Med 358:1919–1928CrossRefPubMed
41.
go back to reference Chambers SM, Goodell MA (2007) Hematopoietic stem cell aging: wrinkles in stem cell potential. Stem Cell Rev 3:201–211CrossRefPubMed Chambers SM, Goodell MA (2007) Hematopoietic stem cell aging: wrinkles in stem cell potential. Stem Cell Rev 3:201–211CrossRefPubMed
42.
go back to reference Chambers SM, Shaw CA, Gatza C, Fisk CJ, Donehower LA, Goodell MA (2007) Aging hematopoietic stem cells decline in function and exhibit epigenetic dysregulation. PLoS Biol 5:e201CrossRefPubMed Chambers SM, Shaw CA, Gatza C, Fisk CJ, Donehower LA, Goodell MA (2007) Aging hematopoietic stem cells decline in function and exhibit epigenetic dysregulation. PLoS Biol 5:e201CrossRefPubMed
43.
go back to reference Qian Y, Deng J, Geng L, Xie H, Jiang G, Zhou L, Wang Y, Yin S, Feng X, Liu J, Ye Z, Zheng S (2008) TLR4 signaling induces B7-H1 expression through MAPK pathways in bladder cancer cells. Cancer Invest 26:816–821CrossRefPubMed Qian Y, Deng J, Geng L, Xie H, Jiang G, Zhou L, Wang Y, Yin S, Feng X, Liu J, Ye Z, Zheng S (2008) TLR4 signaling induces B7-H1 expression through MAPK pathways in bladder cancer cells. Cancer Invest 26:816–821CrossRefPubMed
44.
go back to reference Lee SK, Seo SH, Kim BS, Kim CD, Lee JH, Kang JS, Maeng PJ, Lim JS (2005) IFN-gamma regulates the expression of B7-H1 in dermal fibroblast cells. J Dermatol Sci 40:95–103CrossRefPubMed Lee SK, Seo SH, Kim BS, Kim CD, Lee JH, Kang JS, Maeng PJ, Lim JS (2005) IFN-gamma regulates the expression of B7-H1 in dermal fibroblast cells. J Dermatol Sci 40:95–103CrossRefPubMed
45.
go back to reference Crane CA, Panner A, Murray JC, Wilson SP, Xu H, Chen L, Simko JP, Waldman FM, Pieper RO, Parsa AT (2008) PI(3) kinase is associated with a mechanism of immunoresistance in breast and prostate cancer. Oncogene 28:306–312CrossRefPubMed Crane CA, Panner A, Murray JC, Wilson SP, Xu H, Chen L, Simko JP, Waldman FM, Pieper RO, Parsa AT (2008) PI(3) kinase is associated with a mechanism of immunoresistance in breast and prostate cancer. Oncogene 28:306–312CrossRefPubMed
Metadata
Title
In acute myeloid leukemia, B7-H1 (PD-L1) protection of blasts from cytotoxic T cells is induced by TLR ligands and interferon-gamma and can be reversed using MEK inhibitors
Authors
Céline Berthon
Virginie Driss
Jizhong Liu
Klaudia Kuranda
Xavier Leleu
Nathalie Jouy
Dominique Hetuin
Bruno Quesnel
Publication date
01-12-2010
Publisher
Springer-Verlag
Published in
Cancer Immunology, Immunotherapy / Issue 12/2010
Print ISSN: 0340-7004
Electronic ISSN: 1432-0851
DOI
https://doi.org/10.1007/s00262-010-0909-y

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