Poroptosis: A form of cell death depending on plasma membrane nanopores formation

Hao Li, Zihao Wang, Xiaocui Fang, Wenfeng Zeng, Yanlian Yang, Lingtao Jin, Xiuli Wei, Yan Qin, Chen Wang, Wei Liang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Immunogenic cell death (ICD) in malignant cells can decrease tumor burden and activate antitumor immune response to obtain lasting antitumor immunity, leading to the elimination of distant metastases and prevention of recurrence. Here, we reveal that ppM1 peptide is capable of forming irreparable transmembrane pores on tumor cell membrane, leading to ICD which we name poroptosis. Poroptosis is directly dependent on cell membrane nanopores regardless of the upstream signaling of cell death. ppM1-induced poroptosis was characterized by the sustained release of intracellular LDH. This unique feature is distinct from other well-characterized types of acute necrosis induced by freezing-thawing (F/T) and detergents, which leads to the burst release of intracellular LDH. Our results suggested that steady transmembrane-nanopore-mediated subacute cell death played a vital role in subsequent activated immunity that transforms to an antitumor immune microenvironment. Selectively generating poroptosis in cancer cell could be a promise strategy for cancer therapy.

Original languageEnglish (US)
Article number104481
JournaliScience
Volume25
Issue number6
DOIs
StatePublished - Jun 17 2022

Keywords

  • Cancer
  • Cell biology
  • Functional aspects of cell biology

ASJC Scopus subject areas

  • General

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