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Published on: August 10, 2021
Physiological functions of MTA family of proteins
Nirmalya Sen1, Bin Gui, Rakesh Kumar
1Department of Biochemistry and Molecular Medicine, George Washington University, Washington, DC, 20037, USA.
Abstract:
Although the functional significance of the metastasic tumor antigen (MTA) family of chromatin remodeling proteins in the pathobiology of cancer is fairly well recognized, the physiological role of MTA proteins continues to be an understudied research area and is just beginning to be recognized. Similar to cancer cells, MTA1 also modulates the expression of target genes in normal cells either by acting as a corepressor or coactivator. In addition, physiological functions of MTA proteins are likely to be influenced by its differential expression, subcellular localization, and regulation by upstream modulators and extracellular signals. This review summarizes our current understanding of the physiological functions of the MTA proteins in model systems. In particular, we highlight recent advances of the role MTA proteins play in the brain, eye, circadian rhythm, mammary gland biology, spermatogenesis, liver, immunomodulation and inflammation, cellular radio-sensitivity, and hematopoiesis and differentiation. Based on the growth of knowledge regarding the exciting new facets of the MTA family of proteins in biology and medicine, we speculate that the next burst of findings in this field may reveal further molecular regulatory insights of non-redundant functions of MTA coregulators in the normal physiology as well as in pathological conditions outside cancer.
Insights
Metastatic tumor antigen (MTA) proteins are crucial in cancer, but their roles in normal physiology are emerging. This review details MTA protein functions in various systems, highlighting their broader biological significance beyond cancer.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Metastatic tumor antigen (MTA) proteins are known chromatin remodelers involved in cancer.
- Their physiological roles in normal cellular functions remain largely understudied.
- MTA proteins can act as corepressors or coactivators, modulating gene expression.
Purpose of the Study:
- To review the current understanding of the physiological functions of MTA proteins in various model systems.
- To highlight recent advances in understanding MTA protein roles in normal biology.
- To explore the broader implications of MTA proteins in health and disease.
Main Methods:
- Literature review of studies on MTA protein functions in model systems.
- Analysis of research on MTA protein expression, localization, and regulation.
- Synthesis of findings related to MTA proteins in diverse physiological contexts.
Main Results:
- MTA proteins play significant roles in the brain, eye, circadian rhythm, mammary gland, and spermatogenesis.
- Their functions extend to immunomodulation, inflammation, liver biology, and hematopoiesis.
- MTA proteins influence cellular radio-sensitivity and differentiation processes.
Conclusions:
- The physiological functions of MTA proteins are diverse and critical for normal cellular processes.
- Understanding MTA proteins offers insights into non-cancerous conditions and potential therapeutic targets.
- Further research is needed to elucidate the non-redundant functions of MTA coregulators in physiology and pathology.
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