Proteomics of Melanoma Response to Immunotherapy Reveals Mitochondrial Dependence.

Proteomics of Melanoma Response to Immunotherapy Reveals Mitochondrial Dependence.
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DOI:
10.1016/j.cell.2019.08.012
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发表时间:
2019-09-19
期刊:
影响因子:
64.5
通讯作者:
Geiger T
Geiger T
中科院分区:
生物学1区
文献类型:
--
作者:
Harel M;Ortenberg R;Varanasi SK;Mangalhara KC;Mardamshina M;Markovits E;Baruch EN;Tripple V;Arama-Chayoth M;Greenberg E;Shenoy A;Ayasun R;Knafo N;Xu S;Anafi L;Yanovich-Arad G;Barnabas GD;Ashkenazi S;Besser MJ;Schachter J;Bosenberg M;Shadel GS;Barshack I;Kaech SM;Markel G;Geiger T

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Immunotherapy has revolutionized cancer treatment, yet most patients do not respond. Here, we investigated mechanisms of response by profiling the proteome of clinical samples from advanced stage melanoma patients undergoing either tumor infiltrating lymphocyte (TIL)-based or anti- programmed death 1 (PD1) immunotherapy. Using high-resolution mass spectrometry, we quantified over 10,300 proteins in total and ~4,500 proteins across most samples in each dataset. Statistical analyses revealed higher oxidative phosphorylation and lipid metabolism in responders than in non-responders in both treatments. To elucidate the effects of the metabolic state on the immune response, we examined melanoma cells upon metabolic perturbations or CRISPR-Cas9 knockouts. These experiments indicated lipid metabolism as a regulatory mechanism that increases melanoma immunogenicity by elevating antigen presentation, thereby increasing sensitivity to T cell mediated killing both in vitro and in vivo. Altogether, our proteomic analyses revealed association between the melanoma metabolic state and the response to immunotherapy, which can be the basis for future improvement of therapeutic response. Proteomic profiling of melanomas from patients undergoing immunotherapy reveals key mediators of tumor immunogenicity.
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