Epigenetic regulation of TGF-β pathway and its role in radiation response

Yunan Ding1, Guangming Zhou1, Wentao Hu1

  • 1State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China.

Abstract

Insights

Transforming growth factor-beta (TGF-β) influences tumor progression and radiation response. Understanding TGF-β-mediated epigenetic regulation in radiotherapy can reveal new therapeutic targets for improved cancer treatment.

Area of Science:

  • Oncology
  • Epigenetics
  • Radiation Biology

Background:

  • Transforming growth factor-beta (TGF-β) has a complex role in tumor progression and is crucial for radiation response.
  • Epigenetic mechanisms, including DNA methylation and histone modifications, are implicated in TGF-β's influence on tumor development and radiation sensitivity.

Purpose of the Study:

  • To elucidate the epigenetic mechanisms underlying TGF-β-mediated radiation response.
  • To explore the impact of TGF-β signaling on radiation-induced effects.
  • To identify potential therapeutic targets for enhancing radiotherapy.

Main Methods:

  • Review of existing literature on TGF-β signaling, epigenetics, and radiotherapy.
  • Analysis of epigenetic modifications (DNA methylation, histone modifications, non-coding RNAs) in the context of TGF-β and radiation.
  • Identification of potential adjuvant strategies and therapeutic targets.

Main Results:

  • TGF-β signaling pathways are significantly modulated by epigenetic factors in cancer.
  • Epigenetic regulations by TGF-β impact both tumor progression and response to radiation therapy.
  • Specific epigenetic mechanisms offer potential targets for combination therapies.

Conclusions:

  • Understanding TGF-β-related epigenetic regulation is key to improving radiotherapy outcomes.
  • Targeting these epigenetic mechanisms may enhance the efficacy of radiation treatment.
  • This knowledge provides a basis for developing novel therapeutic strategies 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...
7.3K
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
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...
3.8K
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
3.0K
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...
6.5K
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.3K