Cancer-associated mesothelial cells are regulated by the anti-Müllerian hormone axis

Cell Rep. 2023 Jul 25;42(7):112730. doi: 10.1016/j.celrep.2023.112730. Epub 2023 Jul 14.

Abstract

Cancer-associated mesothelial cells (CAMCs) in the tumor microenvironment are thought to promote growth and immune evasion. We find that, in mouse and human ovarian tumors, cancer cells express anti-Müllerian hormone (AMH) while CAMCs express its receptor AMHR2, suggesting a paracrine axis. Factors secreted by cancer cells induce AMHR2 expression during their reprogramming into CAMCs in mouse and human in vitro models. Overexpression of AMHR2 in the Met5a mesothelial cell line is sufficient to induce expression of immunosuppressive cytokines and growth factors that stimulate ovarian cancer cell growth in an AMH-dependent way. Finally, syngeneic cancer cells implanted in transgenic mice with Amhr2-/- CAMCs grow significantly slower than in wild-type hosts. The cytokine profile of Amhr2-/- tumor-bearing mice is altered and their tumors express less immune checkpoint markers programmed-cell-death 1 (PD1) and cytotoxic T lymphocyte-associated protein 4 (CTLA4). Taken together, these data suggest that the AMH/AMHR2 axis plays a critical role in regulating the pro-tumoral function of CAMCs in ovarian cancer.

Keywords: AMH; AMHR2; CP: Cancer; TGF-β; anti-Müllerian hormone; cancer-associated mesothelial cells; mesothelial; ovarian cancer; syngeneic mouse model of ovarian cancer; tumor microenvironment.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Anti-Mullerian Hormone / genetics
  • Female
  • Humans
  • Mice
  • Mice, Transgenic
  • Ovarian Neoplasms* / genetics
  • Peptide Hormones*
  • Receptors, Transforming Growth Factor beta / metabolism
  • Tumor Microenvironment

Substances

  • Anti-Mullerian Hormone
  • Peptide Hormones
  • Receptors, Transforming Growth Factor beta