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Blocking Hypoxia-Induced Autophagy in Tumors Restores Cytotoxic T-Cell Activity and Promotes Regression

Identifieur interne : 000053 ( PascalFrancis/Curation ); précédent : 000052; suivant : 000054

Blocking Hypoxia-Induced Autophagy in Tumors Restores Cytotoxic T-Cell Activity and Promotes Regression

Auteurs : MUHAMMAD ZAEEM NOMAN [France] ; Bassam Janji [Luxembourg (pays)] ; Bozena Kaminska [Pologne] ; Kris Van Moer [Luxembourg (pays)] ; Sandrine Pierson [Luxembourg (pays)] ; Piotr Przanowski [Pologne] ; Stéphanie Buart [France] ; Guy Berchem [Luxembourg (pays)] ; Pedro Romero [Suisse] ; Fathia Mami-Chouaib [France] ; Salem Chouaib [France]

Source :

RBID : Pascal:11-0434882

Descripteurs français

English descriptors

Abstract

The relationship between hypoxic stress, autophagy, and specific cell-mediated cytotoxicity remains unknown. This study shows that hypoxia-induced resistance of lung tumor to cytolytic T lymphocyte (CTL)-mediated lysis is associated with autophagy induction in target cells. In turn, this correlates with STAT3 phosphorylation on tyrosine 705 residue (pSTAT3) and HIF-1α accumulation. Inhibition of autophagy by siRNA targeting of either beclin1 or Atg5 resulted in impairment of pSTAT3 and restoration of hypoxic tumor cell susceptibility to CTL-mediated lysis. Furthermore, inhibition of pSTAT3 in hypoxic Atg5 or beclin1-targeted tumor cells was found to be associated with the inhibition Src kinase (pSrc). Autophagy-induced pSTAT3 and pSrc regulation seemed to involve the ubiquitin proteasome system and p62/SQSTM1. In vivo experiments using B16-F10 melanoma tumor cells indicated that depletion of beclin1 resulted in an inhibition of B16-F10 tumor growth and increased tumor apoptosis. Moreover, in vivo inhibition of autophagy by hydroxychloroquine in B16-F10 tumor-bearing mice and mice vaccinated with tyrosinase-related protein-2 peptide dramatically increased tumor growth inhibition. Collectively, this study establishes a novel functional link between hypoxia-induced autophagy and the regulation of antigen-specific T-cell lysis and points to a major role of autophagy in the control of in vivo tumor growth.
pA  
A01 01  1    @0 0008-5472
A02 01      @0 CNREA8
A03   1    @0 Cancer res. : (Baltimore)
A05       @2 71
A06       @2 18
A08 01  1  ENG  @1 Blocking Hypoxia-Induced Autophagy in Tumors Restores Cytotoxic T-Cell Activity and Promotes Regression
A11 01  1    @1 MUHAMMAD ZAEEM NOMAN
A11 02  1    @1 JANJI (Bassam)
A11 03  1    @1 KAMINSKA (Bozena)
A11 04  1    @1 MOER (Kris Van)
A11 05  1    @1 PIERSON (Sandrine)
A11 06  1    @1 PRZANOWSKI (Piotr)
A11 07  1    @1 BUART (Stéphanie)
A11 08  1    @1 BERCHEM (Guy)
A11 09  1    @1 ROMERO (Pedro)
A11 10  1    @1 MAMI-CHOUAIB (Fathia)
A11 11  1    @1 CHOUAIB (Salem)
A14 01      @1 Unité INSERM U753, Institut de Cancérologie Gustave Roussy @2 Villejuif @3 FRA @Z 1 aut. @Z 7 aut. @Z 10 aut. @Z 11 aut.
A14 02      @1 Laboratory of Experimental Hemato-Oncology, Department of Oncology, Public Research Center for Health (CRP-Santé) @2 Luxembourg City @3 LUX @Z 2 aut. @Z 4 aut. @Z 5 aut. @Z 8 aut.
A14 03      @1 Laboratory of Transcription Regulation, Department of Cell Biology, Nencki Institute @2 Warsaw @3 POL @Z 3 aut. @Z 6 aut.
A14 04      @1 Translational Tumor Immunology group, Ludwig Center for Cancer Research, University of Lausanne @2 Lausanne @3 CHE @Z 9 aut.
A20       @1 5976-5986
A21       @1 2011
A23 01      @0 ENG
A43 01      @1 INIST @2 5088 @5 354000191221920040
A44       @0 0000 @1 © 2011 INIST-CNRS. All rights reserved.
A45       @0 44 ref.
A47 01  1    @0 11-0434882
A60       @1 P
A61       @0 A
A64 01  1    @0 Cancer research : (Baltimore)
A66 01      @0 USA
C01 01    ENG  @0 The relationship between hypoxic stress, autophagy, and specific cell-mediated cytotoxicity remains unknown. This study shows that hypoxia-induced resistance of lung tumor to cytolytic T lymphocyte (CTL)-mediated lysis is associated with autophagy induction in target cells. In turn, this correlates with STAT3 phosphorylation on tyrosine 705 residue (pSTAT3) and HIF-1α accumulation. Inhibition of autophagy by siRNA targeting of either beclin1 or Atg5 resulted in impairment of pSTAT3 and restoration of hypoxic tumor cell susceptibility to CTL-mediated lysis. Furthermore, inhibition of pSTAT3 in hypoxic Atg5 or beclin1-targeted tumor cells was found to be associated with the inhibition Src kinase (pSrc). Autophagy-induced pSTAT3 and pSrc regulation seemed to involve the ubiquitin proteasome system and p62/SQSTM1. In vivo experiments using B16-F10 melanoma tumor cells indicated that depletion of beclin1 resulted in an inhibition of B16-F10 tumor growth and increased tumor apoptosis. Moreover, in vivo inhibition of autophagy by hydroxychloroquine in B16-F10 tumor-bearing mice and mice vaccinated with tyrosinase-related protein-2 peptide dramatically increased tumor growth inhibition. Collectively, this study establishes a novel functional link between hypoxia-induced autophagy and the regulation of antigen-specific T-cell lysis and points to a major role of autophagy in the control of in vivo tumor growth.
C02 01  X    @0 002B02R
C02 02  X    @0 002B04
C03 01  X  FRE  @0 Hypoxie @5 01
C03 01  X  ENG  @0 Hypoxia @5 01
C03 01  X  SPA  @0 Hipoxia @5 01
C03 02  X  FRE  @0 Autophagie @5 02
C03 02  X  ENG  @0 Autophagy @5 02
C03 02  X  SPA  @0 Autofagia @5 02
C03 03  X  FRE  @0 Tumeur maligne @2 NM @5 03
C03 03  X  ENG  @0 Malignant tumor @2 NM @5 03
C03 03  X  SPA  @0 Tumor maligno @2 NM @5 03
C03 04  X  FRE  @0 Lymphocyte T cytotoxique @5 04
C03 04  X  ENG  @0 Cytotoxic T lymphocyte @5 04
C03 04  X  SPA  @0 Linfocito T citotóxico @5 04
C03 05  X  FRE  @0 Activité biologique @5 05
C03 05  X  ENG  @0 Biological activity @5 05
C03 05  X  SPA  @0 Actividad biológica @5 05
C03 06  X  FRE  @0 Régression @5 06
C03 06  X  ENG  @0 Regression @5 06
C03 06  X  SPA  @0 Regresión @5 06
C03 07  X  FRE  @0 Oxygène @2 NC @2 FX @5 23
C03 07  X  ENG  @0 Oxygen @2 NC @2 FX @5 23
C03 07  X  SPA  @0 Oxígeno @2 NC @2 FX @5 23
C07 01  X  FRE  @0 Cancer @2 NM
C07 01  X  ENG  @0 Cancer @2 NM
C07 01  X  SPA  @0 Cáncer @2 NM
N21       @1 297
N44 01      @1 OTO
N82       @1 OTO

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Pascal:11-0434882

Le document en format XML

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<term>Malignant tumor</term>
<term>Oxygen</term>
<term>Regression</term>
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<term>Hypoxie</term>
<term>Autophagie</term>
<term>Tumeur maligne</term>
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<div type="abstract" xml:lang="en">The relationship between hypoxic stress, autophagy, and specific cell-mediated cytotoxicity remains unknown. This study shows that hypoxia-induced resistance of lung tumor to cytolytic T lymphocyte (CTL)-mediated lysis is associated with autophagy induction in target cells. In turn, this correlates with STAT3 phosphorylation on tyrosine 705 residue (pSTAT3) and HIF-1α accumulation. Inhibition of autophagy by siRNA targeting of either beclin1 or Atg5 resulted in impairment of pSTAT3 and restoration of hypoxic tumor cell susceptibility to CTL-mediated lysis. Furthermore, inhibition of pSTAT3 in hypoxic Atg5 or beclin1-targeted tumor cells was found to be associated with the inhibition Src kinase (pSrc). Autophagy-induced pSTAT3 and pSrc regulation seemed to involve the ubiquitin proteasome system and p62/SQSTM1. In vivo experiments using B16-F10 melanoma tumor cells indicated that depletion of beclin1 resulted in an inhibition of B16-F10 tumor growth and increased tumor apoptosis. Moreover, in vivo inhibition of autophagy by hydroxychloroquine in B16-F10 tumor-bearing mice and mice vaccinated with tyrosinase-related protein-2 peptide dramatically increased tumor growth inhibition. Collectively, this study establishes a novel functional link between hypoxia-induced autophagy and the regulation of antigen-specific T-cell lysis and points to a major role of autophagy in the control of in vivo tumor growth.</div>
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<fA02 i1="01">
<s0>CNREA8</s0>
</fA02>
<fA03 i2="1">
<s0>Cancer res. : (Baltimore)</s0>
</fA03>
<fA05>
<s2>71</s2>
</fA05>
<fA06>
<s2>18</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG">
<s1>Blocking Hypoxia-Induced Autophagy in Tumors Restores Cytotoxic T-Cell Activity and Promotes Regression</s1>
</fA08>
<fA11 i1="01" i2="1">
<s1>MUHAMMAD ZAEEM NOMAN</s1>
</fA11>
<fA11 i1="02" i2="1">
<s1>JANJI (Bassam)</s1>
</fA11>
<fA11 i1="03" i2="1">
<s1>KAMINSKA (Bozena)</s1>
</fA11>
<fA11 i1="04" i2="1">
<s1>MOER (Kris Van)</s1>
</fA11>
<fA11 i1="05" i2="1">
<s1>PIERSON (Sandrine)</s1>
</fA11>
<fA11 i1="06" i2="1">
<s1>PRZANOWSKI (Piotr)</s1>
</fA11>
<fA11 i1="07" i2="1">
<s1>BUART (Stéphanie)</s1>
</fA11>
<fA11 i1="08" i2="1">
<s1>BERCHEM (Guy)</s1>
</fA11>
<fA11 i1="09" i2="1">
<s1>ROMERO (Pedro)</s1>
</fA11>
<fA11 i1="10" i2="1">
<s1>MAMI-CHOUAIB (Fathia)</s1>
</fA11>
<fA11 i1="11" i2="1">
<s1>CHOUAIB (Salem)</s1>
</fA11>
<fA14 i1="01">
<s1>Unité INSERM U753, Institut de Cancérologie Gustave Roussy</s1>
<s2>Villejuif</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>7 aut.</sZ>
<sZ>10 aut.</sZ>
<sZ>11 aut.</sZ>
</fA14>
<fA14 i1="02">
<s1>Laboratory of Experimental Hemato-Oncology, Department of Oncology, Public Research Center for Health (CRP-Santé)</s1>
<s2>Luxembourg City</s2>
<s3>LUX</s3>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
</fA14>
<fA14 i1="03">
<s1>Laboratory of Transcription Regulation, Department of Cell Biology, Nencki Institute</s1>
<s2>Warsaw</s2>
<s3>POL</s3>
<sZ>3 aut.</sZ>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="04">
<s1>Translational Tumor Immunology group, Ludwig Center for Cancer Research, University of Lausanne</s1>
<s2>Lausanne</s2>
<s3>CHE</s3>
<sZ>9 aut.</sZ>
</fA14>
<fA20>
<s1>5976-5986</s1>
</fA20>
<fA21>
<s1>2011</s1>
</fA21>
<fA23 i1="01">
<s0>ENG</s0>
</fA23>
<fA43 i1="01">
<s1>INIST</s1>
<s2>5088</s2>
<s5>354000191221920040</s5>
</fA43>
<fA44>
<s0>0000</s0>
<s1>© 2011 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45>
<s0>44 ref.</s0>
</fA45>
<fA47 i1="01" i2="1">
<s0>11-0434882</s0>
</fA47>
<fA60>
<s1>P</s1>
</fA60>
<fA61>
<s0>A</s0>
</fA61>
<fA64 i1="01" i2="1">
<s0>Cancer research : (Baltimore)</s0>
</fA64>
<fA66 i1="01">
<s0>USA</s0>
</fA66>
<fC01 i1="01" l="ENG">
<s0>The relationship between hypoxic stress, autophagy, and specific cell-mediated cytotoxicity remains unknown. This study shows that hypoxia-induced resistance of lung tumor to cytolytic T lymphocyte (CTL)-mediated lysis is associated with autophagy induction in target cells. In turn, this correlates with STAT3 phosphorylation on tyrosine 705 residue (pSTAT3) and HIF-1α accumulation. Inhibition of autophagy by siRNA targeting of either beclin1 or Atg5 resulted in impairment of pSTAT3 and restoration of hypoxic tumor cell susceptibility to CTL-mediated lysis. Furthermore, inhibition of pSTAT3 in hypoxic Atg5 or beclin1-targeted tumor cells was found to be associated with the inhibition Src kinase (pSrc). Autophagy-induced pSTAT3 and pSrc regulation seemed to involve the ubiquitin proteasome system and p62/SQSTM1. In vivo experiments using B16-F10 melanoma tumor cells indicated that depletion of beclin1 resulted in an inhibition of B16-F10 tumor growth and increased tumor apoptosis. Moreover, in vivo inhibition of autophagy by hydroxychloroquine in B16-F10 tumor-bearing mice and mice vaccinated with tyrosinase-related protein-2 peptide dramatically increased tumor growth inhibition. Collectively, this study establishes a novel functional link between hypoxia-induced autophagy and the regulation of antigen-specific T-cell lysis and points to a major role of autophagy in the control of in vivo tumor growth.</s0>
</fC01>
<fC02 i1="01" i2="X">
<s0>002B02R</s0>
</fC02>
<fC02 i1="02" i2="X">
<s0>002B04</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE">
<s0>Hypoxie</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG">
<s0>Hypoxia</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA">
<s0>Hipoxia</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE">
<s0>Autophagie</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG">
<s0>Autophagy</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA">
<s0>Autofagia</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE">
<s0>Tumeur maligne</s0>
<s2>NM</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG">
<s0>Malignant tumor</s0>
<s2>NM</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA">
<s0>Tumor maligno</s0>
<s2>NM</s2>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE">
<s0>Lymphocyte T cytotoxique</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG">
<s0>Cytotoxic T lymphocyte</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA">
<s0>Linfocito T citotóxico</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE">
<s0>Activité biologique</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG">
<s0>Biological activity</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA">
<s0>Actividad biológica</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE">
<s0>Régression</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG">
<s0>Regression</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA">
<s0>Regresión</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE">
<s0>Oxygène</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>23</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG">
<s0>Oxygen</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>23</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA">
<s0>Oxígeno</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>23</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE">
<s0>Cancer</s0>
<s2>NM</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG">
<s0>Cancer</s0>
<s2>NM</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA">
<s0>Cáncer</s0>
<s2>NM</s2>
</fC07>
<fN21>
<s1>297</s1>
</fN21>
<fN44 i1="01">
<s1>OTO</s1>
</fN44>
<fN82>
<s1>OTO</s1>
</fN82>
</pA>
</standard>
</inist>
</record>

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