The regulation of TGF-β/SMAD signaling by protein deubiquitination

Juan Zhang1, Xiaofei Zhang, Feng Xie

  • 1Life Sciences Institute, Zhejiang University, Hangzhou, 310058, China.

Protein & Cell
|April 24, 2014
PubMed

Insights

Deubiquitinating enzymes (DUBs) regulate transforming growth factor-β (TGF-β) signaling, a pathway implicated in cancer. Understanding DUBs controlling TGF-β is crucial for developing targeted cancer therapies.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Oncology

Background:

  • Transforming growth factor-β (TGF-β) signaling is vital for development and tissue stability, mediated by TGF-β receptors.
  • Dysregulated TGF-β signaling contributes to various diseases, notably cancer, where it promotes invasion and metastasis.
  • The TGF-β/SMAD pathway is a recognized therapeutic target in advanced cancers.

Purpose of the Study:

  • To review recent discoveries concerning deubiquitinating enzymes (DUBs) that modulate TGF-β signaling pathway activity.
  • To discuss the role of these DUBs in driving cancer progression.
  • To elucidate the molecular mechanisms through which DUBs regulate TGF-β signaling.

Main Methods:

  • Literature review of recent findings on deubiquitinating enzymes and TGF-β signaling.
  • Analysis of studies investigating the regulatory roles of DUBs in TGF-β pathway.
  • Discussion of the mechanistic insights into DUB-mediated control of TGF-β signaling components.

Main Results:

  • Deubiquitinating enzymes (DUBs) play critical roles in regulating TGF-β signaling by removing ubiquitin modifications.
  • Specific DUBs have been identified as key controllers of TGF-β pathway activity.
  • These DUBs are implicated in promoting cancer progression through their influence on TGF-β signaling.

Conclusions:

  • DUBs are essential regulators of the TGF-β signaling pathway, impacting its activity at multiple levels.
  • Targeting DUBs that control TGF-β signaling presents a promising therapeutic strategy for cancer treatment.
  • Further research into DUB mechanisms is needed to fully exploit their therapeutic potential in oncology.

Related Concept Videos

TGF - β Signaling Pathway01:16

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.2K
Regulated Protein Degradation02:58

Regulated Protein Degradation

It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
6.6K
Regulated Protein Degradation02:58

Regulated Protein Degradation

2.5K
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR...
2.0K
The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
10.2K
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
8.2K