2. Academic Validation
  3. Hippo-signaling-controlled MHC class I antigen processing and presentation pathway potentiates antitumor immunity

Hippo-signaling-controlled MHC class I antigen processing and presentation pathway potentiates antitumor immunity

  • Cell Rep. 2024 Mar 23;43(4):114003. doi: 10.1016/j.celrep.2024.114003.
Linyuan Peng 1,  Liang Zhou 2,  Huan Li 2,  Xin Zhang 1,  Su Li 1,  Kai Wang 1,  Mei Yang 1,  Xiaoyu Ma 1,  Danlan Zhang 2,  Siliang Xiang 1,  Yajun Duan 1,  Tianzhi Wang 1,  Chunmeng Sun 3,  Chen Wang 1,  Desheng Lu 4,  Minxian Qian 5,  Zhongyuan Wang 6
Affiliations

Affiliations

  • 1 State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China.
  • 2 Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Cancer Research Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen 518055, China.
  • 3 State Key Laboratory of Natural Medicines, NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
  • 4 Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Cancer Research Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen 518055, China. Electronic address: [email protected].
  • 5 State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China. Electronic address: [email protected].
  • 6 State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China. Electronic address: [email protected].
PMID: 38527062 DOI: 10.1016/j.celrep.2024.114003
Abstract

The major histocompatibility complex class I (MHC class I)-mediated tumor antigen processing and presentation (APP) pathway is essential for the recruitment and activation of cytotoxic CD8+ T lymphocytes (CD8+ CTLs). However, this pathway is frequently dysregulated in many cancers, thus leading to a failure of immunotherapy. Here, we report that activation of the tumor-intrinsic Hippo pathway positively correlates with the expression of MHC class I APP genes and the abundance of CD8+ CTLs in mouse tumors and patients. Blocking the Hippo pathway effector Yes-associated protein/transcriptional enhanced associate domain (YAP/TEAD) potently improves antitumor immunity. Mechanistically, the YAP/TEAD complex cooperates with the nucleosome remodeling and deacetylase complex to repress NLRC5 transcription. The upregulation of NLRC5 by YAP/TEAD depletion or pharmacological inhibition increases the expression of MHC class I APP genes and enhances CD8+ CTL-mediated killing of Cancer cells. Collectively, our results suggest a crucial tumor-promoting function of YAP depending on NLRC5 to impair the MHC class I APP pathway and provide a rationale for inhibiting YAP activity in immunotherapy for Cancer.

Keywords

CP: Cancer; CP: Immunology; Hippo pathway; MHC class I; NLRC5; NuRD complex; TAZ; TEAD; YAP; antigen processing and presentation; antitumor immunity; immune checkpoint blockade.

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