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In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
11:36

In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones

Published on: July 25, 2019

CYLD: a tumor suppressor deubiquitinase regulating NF-kappaB activation and diverse biological processes

S-C Sun1

  • 1Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. ssun@mdanderson.org

Cell Death and Differentiation
|April 18, 2009
PubMed

Insights

Cylindromatosis (CYLD) is a deubiquitinase (DUB) that suppresses tumors by inhibiting NF-kappaB signaling. CYLD removes K63-linked ubiquitin chains, preventing cell survival and oncogenesis.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Protein ubiquitination is a reversible post-translational modification crucial for cellular processes.
  • Deubiquitinases (DUBs) are enzymes that remove ubiquitin chains, regulating protein function.
  • CYLD is a tumor suppressor DUB implicated in regulating NF-kappaB signaling.

Purpose of the Study:

  • To elucidate the role of CYLD in regulating NF-kappaB activation.
  • To understand the mechanism by which CYLD exerts its tumor suppressor function.
  • To explore the broader physiological functions regulated by CYLD.

Main Methods:

  • Investigating the deubiquitinase activity of CYLD.
  • Analyzing the interaction between CYLD and NF-kappaB signaling pathway components.
  • Studying the impact of CYLD on NF-kappaB activation in cellular models.

Main Results:

  • CYLD deconjugates K63-linked ubiquitin chains involved in NF-kappaB activation.
  • CYLD negatively regulates NF-kappaB signaling, contributing to its tumor suppressor activity.
  • CYLD influences diverse processes including immune response, inflammation, and cell cycle.

Conclusions:

  • CYLD plays a critical role in negatively regulating NF-kappaB signaling.
  • CYLD's function as a tumor suppressor is linked to its control over NF-kappaB.
  • CYLD is a key regulator of multiple physiological pathways, highlighting its broad importance.

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