Epigenetic regulation of insulin-like growth factor binding protein-3 (IGFBP-3) in cancer

Claire M Perks1, Jeff Mp Holly

  • 1IGF & Metabolic Endocrinology Group, School of Clinical Sciences, University of Bristol, Learning and Research Building, Southmead Hospital, Bristol, BS10 5NB, UK, claire.m.perks@bristol.ac.uk.

Insights

Epigenetic alterations in cancer disrupt gene expression. This review focuses on the epigenetic regulation of insulin-like growth factor binding protein 3 (IGFBP-3) in cancer development and progression.

Area of Science:

  • Oncology
  • Epigenetics
  • Molecular Biology

Background:

  • Epigenetics involves heritable gene expression changes without altering DNA sequence.
  • Disrupted epigenetic mechanisms are crucial in cancer pathogenesis, leading to malignant transformation.
  • Non-coding RNAs, DNA methylation, and histone modifications are key epigenetic regulators.

Purpose of the Study:

  • To review the epigenetic regulation of Insulin-like Growth Factor Binding Protein 3 (IGFBP-3) in cancer.
  • To highlight the role of the IGF axis in cancer development and progression.
  • To focus on IGFBP-3 due to frequent alterations in tumor genes.

Main Methods:

  • Literature review of epigenetic mechanisms affecting IGFBP-3.
  • Analysis of studies on DNA methylation, histone modifications, and non-coding RNAs impacting IGFBP-3.
  • Examination of the role of the IGF axis in cancer.

Main Results:

  • IGFBP genes are frequently altered in tumors.
  • Epigenetic dysregulation of IGFBP-3 is implicated in cancer.
  • The IGF axis is a significant factor in cancer progression.

Conclusions:

  • Epigenetic regulation of IGFBP-3 is a critical aspect of cancer development.
  • Understanding these mechanisms offers potential therapeutic targets.
  • Further research into IGFBP-3 epigenetic modifications is warranted.

Related Concept Videos

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...
6.5K
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...
5.1K
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...
4.3K
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
34.5K
Insulin: The Receptor and Signaling Pathways01:28

Insulin: The Receptor and Signaling Pathways

Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but...
6.3K
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...
4.0K