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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.
Abstract:
Epigenetics refers to heritable changes in gene expression that are independent of alterations in DNA sequence. It is now accepted that disruption of epigenetic mechanisms plays a key role in the pathogenesis of cancer: culminating in altered gene function and malignant cellular transformation. DNA methylation and histone modifications are the most widely studied changes but non-coding RNAs such as miRNAs are also considered part of the epigenetic machinery. The insulin-like growth factor (IGF) axis is composed of two ligands, IGF-I and -II, their receptors and six high affinity IGF binding proteins (IGFBPs). The IGF axis plays a key role in cancer development and progression. As IGFBP genes have consistently been identified among the most common to be aberrantly altered in tumours, this review will focus on epigenetic regulation of IGFBP-3 in cancer for which the majority of evidence has been obtained.
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.
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