Transforming growth factor-beta signaling and ubiquitinators in cancer

Eric Glasgow1, Lopa Mishra

  • 1Laboratory of Cancer Genetics, Digestive Diseases, and GI Developmental Biology, Department of Surgery, Medicine and Lombardi Cancer Center, Georgetown University Medical Center, Washington, DC 20007, USA. eg239@georgetown.edu

Insights

Transforming growth factor-beta (TGF-beta) signaling regulates cell functions but its deregulation drives cancer. This review highlights ubiquitinators controlling TGF-beta pathways and their links to cancer, offering potential therapeutic targets.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • Transforming growth factor-beta (TGF-beta) is crucial for cell regulation, with its dysregulation implicated in cancer progression.
  • TGF-beta signaling involves Smad proteins and adaptor proteins, forming complex regulatory networks.
  • Ubiquitin-mediated degradation adds another regulatory layer to TGF-beta signaling.

Purpose of the Study:

  • To review the role of ubiquitinators in regulating TGF-beta signaling.
  • To explore the association between these ubiquitin ligases and various cancer types.
  • To identify potential therapeutic targets within the TGF-beta ubiquitination network for cancer treatment.

Main Methods:

  • Literature review focusing on ubiquitinators and TGF-beta signaling.
  • Analysis of studies linking ubiquitin ligases to cancer.
  • Synthesis of information on regulatory mechanisms and therapeutic potential.

Main Results:

  • Ubiquitinators play a critical role in modulating TGF-beta pathway components.
  • Specific ubiquitin ligases are associated with the development and progression of diverse cancers.
  • Targeting these ubiquitinators may offer novel strategies for cancer therapy.

Conclusions:

  • Ubiquitin-mediated regulation is a key aspect of TGF-beta signaling.
  • Understanding the interplay between ubiquitinators and TGF-beta signaling in cancer is vital.
  • Targeting cancer-associated ubiquitin ligases in the TGF-beta pathway presents a promising avenue for novel cancer therapeutics.

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 are of three kinds RI, RII, and RIII. The RI...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
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 activation may...
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...