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RIPK1 ubiquitination: Evidence, correlations and the undefined

Daniel S Simpson1, Anna Gabrielyan1, Rebecca Feltham1

  • 1The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3050, Australia.

Seminars in Cell & Developmental Biology
|September 27, 2020
PubMed

Insights

Receptor Interacting Protein Kinase 1 (RIPK1) is crucial for cell survival and death signaling. This study questions the extent to which RIPK1 ubiquitination influences its signaling outcomes.

Area of Science:

  • Molecular Biology
  • Immunology
  • Cell Biology

Background:

  • Receptor Interacting Protein Kinase 1 (RIPK1) is a key regulator of cell survival and death pathways.
  • RIPK1 acts downstream of cytokine receptors like TNF Super Family (TNFRSF) and Toll-like receptors (TLRs).
  • Its role in NF-κB signaling and both caspase-dependent and -independent cell death is well-established.

Purpose of the Study:

  • To critically evaluate the current understanding of RIPK1 ubiquitination.
  • To determine the extent to which RIPK1 ubiquitination impacts RIPK1-mediated signaling.

Main Methods:

  • Review of existing literature on RIPK1 signaling and ubiquitination.
  • Analysis of studies investigating the functional consequences of RIPK1 ubiquitination.

Main Results:

  • Evidence directly linking RIPK1 ubiquitination to specific signaling outcomes remains complex and sometimes inconclusive.
  • The intricate nature of ubiquitin signaling poses challenges in definitively proving causality.

Conclusions:

  • Further research is needed to fully elucidate the precise role of RIPK1 ubiquitination in regulating cell fate.
  • Clarifying these mechanisms is crucial for understanding immune responses and cell death.
Keywords:
RIPK1Ubiquitination

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