Obesity accelerates immune evasion of non-small cell lung carcinoma via TFEB-dependent upregulation of Siglec-15 and glycolytic reprogramming

Cancer Lett. 2022 Dec 1:550:215918. doi: 10.1016/j.canlet.2022.215918. Epub 2022 Sep 20.

Abstract

Although obesity contributes to tumor incidence and progression in various cancers, whether obesity impacts the tumor microenvironment (TME) of non-small cell lung cancer (NSCLC) remains largely under-explored. We generated NSCLC xenograft model in diet-induced obese mice and identified that TFEB is critical to accelerate obesity-related NSCLC progression with mimic intrinsic functions on tumor biology. Mechanically, TFEB binds directly to Siglec-15 promoter to upregulate Siglec-15 expression and binds to Hk2 and Ldha promoters to enhance glycolytic flux in NSCLC cells, which restrain the expansion and cytotoxic function of CD8+ T cells while maintain suppressive Treg cells in TME, jointly promoting immune evasion of NSCLC cells in obesity. Blocking tumor TFEB improves the therapeutic efficiency of anti-PD-1 in obese mice. Altogether, our data identify essential roles of TFEB in remodeling immunosuppressive TME and promoting NSCLC development in obesity, providing scientific rational for TFEB as a potential biomarker to predict immune checkpoint blockade efficiency in obese NSCLC patients.

Keywords: Immune checkpoint blockade; Immune evasion; Non-small cell lung carcinoma; Obesity; TFEB.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • B7-H1 Antigen / genetics
  • B7-H1 Antigen / metabolism
  • Basic Helix-Loop-Helix Leucine Zipper Transcription Factors / genetics
  • Basic Helix-Loop-Helix Leucine Zipper Transcription Factors / metabolism
  • CD8-Positive T-Lymphocytes
  • Carcinoma, Non-Small-Cell Lung* / metabolism
  • Humans
  • Immune Checkpoint Inhibitors
  • Immune Evasion
  • Immunoglobulins
  • Lung Neoplasms* / drug therapy
  • Membrane Proteins
  • Mice
  • Mice, Obese
  • Obesity / metabolism
  • Sialic Acid Binding Immunoglobulin-like Lectins / metabolism
  • Sialic Acid Binding Immunoglobulin-like Lectins / therapeutic use
  • Tumor Microenvironment
  • Up-Regulation

Substances

  • B7-H1 Antigen
  • Basic Helix-Loop-Helix Leucine Zipper Transcription Factors
  • Immune Checkpoint Inhibitors
  • Immunoglobulins
  • Membrane Proteins
  • Sialic Acid Binding Immunoglobulin-like Lectins
  • Siglec-15 protein, mouse
  • TFEB protein, human