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The role of tyrosine phosphorylation in modulating death receptor signaling

Pelin Dilsiz1, Fatma Zehra Hapil2

  • 1Department of Molecular Biology and Genetics, Faculty of Science and Letters, Istanbul Technical University, Istanbul 34469, Turkiye; Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul 34810, Türkiye.

Cytokine & Growth Factor Reviews
|July 20, 2026
PubMed

Insights

Tyrosine kinases phosphorylate death receptors (DRs), promoting inflammation and proliferation over cell death. This impacts cancer survival and therapy resistance, identifying kinases and phosphatases as potential therapeutic targets.

Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Cancer Biology

Background:

  • Death receptors (DRs) are key regulators of cellular outcomes like apoptosis and inflammation.
  • Tyrosine kinases are activated by death ligands, but their role in DR signaling is unclear.
  • Phosphorylation is a crucial post-translational modification influencing signal transduction.

Purpose of the Study:

  • To investigate the role of tyrosine kinases in phosphorylating death receptors.
  • To understand how this phosphorylation affects downstream signaling pathways.
  • To explore the implications for cancer survival and targeted therapies.

Main Methods:

  • Review of existing literature on death receptor signaling and tyrosine kinase activation.
  • Analysis of studies demonstrating tyrosine kinase activation (Src, JAKs, EGFR) upon death ligand exposure.
  • Examination of the functional consequences of DR phosphorylation.

Main Results:

  • Tyrosine kinases (Src, JAKs, EGFR) can phosphorylate death receptors.
  • DR phosphorylation promotes pro-inflammatory and proliferative pathways, inhibiting cell death.
  • These kinases are often hyperactivated in cancer, contributing to tumor survival.

Conclusions:

  • Tyrosine kinase-mediated DR phosphorylation supports cancer cell survival and therapy resistance.
  • Targeting these kinases and their opposing phosphatases presents a potential therapeutic strategy.
  • Further research is needed to elucidate the precise mechanisms and therapeutic applications.
Keywords:
EGFRFASSrcTNFR1TRAIL-R1Tyrosine phosphorylation

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