Abstract |
HLA-A*0201/DRB1*0101 transgenic mice (A2/DR1 mice) have been developed to study the immunogenicity of tumor antigen-derived T cell epitopes. To extend the use and application of this mouse model in the field of antitumor immunotherapy, we described a tumor cell line generated from a naturally occurring tumor in A2/DR1 mouse named SARC-L1. Histological and genes signature analysis supported the sarcoma origin of this cell line. While SARC-L1 tumor cells lack HLA-DRB1*0101 expression, a very low expression of HLA-A*0201 molecules was found on these cells. Furthermore they also weakly but constitutively expressed the programmed death-ligand 1 (PD-L1). Interestingly both HLA-A*0201 and PD-L1 expressions can be increased on SARC-L1 after IFN-γ exposure in vitro. We also obtained two genetically modified cell lines highly expressing either HLA-A*0201 or both HLA-A*0201/ HLA-DRB1*0101 molecules referred as SARC-A2 and SARC-A2DR1 respectively. All the SARC-L1-derived cell lines induced aggressive subcutaneous tumors in A2DR1 mice in vivo. The analysis of SARC-L1 tumor microenvironment revealed a strong infiltration by T cells expressing inhibitory receptors such as PD-1 and TIM-3. Finally, we found that SARC-L1 is sensitive to several drugs commonly used to treat sarcoma and also susceptible to anti-PD-L1 monoclonal antibody therapy in vivo. Collectively, we described a novel syngeneic tumor model A2/DR1 mice that could be used as preclinical tool for the evaluation of antitumor immunotherapies.
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Authors | Laurie Rangan, Jeanne Galaine, Romain Boidot, Mohamad Hamieh, Magalie Dosset, Julie Francoual, Laurent Beziaud, Jean-René Pallandre, Elodie Lauret Marie Joseph, Afag Asgarova, Christophe Borg, Talal Al Saati, Yann Godet, Jean Baptiste Latouche, Séverine Valmary-Degano, Olivier Adotévi |
Journal | Oncotarget
(Oncotarget)
Vol. 8
Issue 30
Pg. 48959-48971
(07 25 2017)
ISSN: 1949-2553 [Electronic] United States |
PMID | 28430664
(Publication Type: Journal Article)
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Chemical References |
- Antineoplastic Agents
- B7-H1 Antigen
- CD274 protein, human
- HLA-A*02:01 antigen
- HLA-A2 Antigen
- HLA-DRB1 Chains
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Topics |
- Animals
- Antineoplastic Agents
(pharmacology)
- Apoptosis
(drug effects, genetics, immunology)
- B7-H1 Antigen
(genetics, metabolism)
- Cell Line, Tumor
- Cell Survival
(drug effects)
- Disease Models, Animal
- Female
- Gene Expression
- Gene Expression Profiling
- HLA-A2 Antigen
(genetics, immunology)
- HLA-DRB1 Chains
(genetics, immunology)
- Humans
- Lymphocytes, Tumor-Infiltrating
(drug effects, immunology, metabolism)
- Male
- Mice
- Mice, Transgenic
- Neoplasms
(genetics, immunology, metabolism, pathology)
- Sarcoma
(genetics, metabolism, pathology)
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