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TIS7 Induces Transcriptional Cascade of Methylosome Components Required for Muscle Differentiation

Overview
Journal BMC Biol
Publisher Biomed Central
Specialty Biology
Date 2016 Oct 27
PMID 27782840
Citations 4
Authors
Affiliations
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Abstract

Background: TPA Induced Sequence 7 acts as a transcriptional co-regulator controlling the expression of genes involved in differentiation of various cell types, including skeletal myoblasts. We and others have shown that TIS7 regulates adult myogenesis through MyoD, one of the essential myogenic regulatory factors.

Results: Here, we present data identifying ICln as the specific, novel protein downstream of TIS7 controlling myogenesis. We show that TIS7/ICln epigenetically regulate myoD expression controlling protein methyl transferase activity. In particular, ICln regulates MyoD expression via its interaction with PRMT5 by an epigenetic modification that utilizes symmetrical di-methylation of histone H3 on arginine 8. We provide multiple evidences that TIS7 directly binds DNA, which is a functional feature necessary for its role in transcriptional regulation.

Conclusion: We present here a molecular insight into TIS7-specific control of MyoD gene expression and thereby skeletal muscle differentiation.

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The negative adipogenesis regulator is transcriptionally regulated by (TIS7) and translationally by its orthologue (SKMc15).

Vietor I, Cikes D, Piironen K, Vasakou T, Heimdorfer D, Gstir R Elife. 2023; 12.

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Binding of the protein ICln to α-integrin contributes to the activation of ICl current.

Schedlbauer A, Tamma G, Rodighiero S, Civello D, Tamplenizza M, Ledolter K Sci Rep. 2019; 9(1):12195.

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Histone phosphorylation by TRPM6's cleaved kinase attenuates adjacent arginine methylation to regulate gene expression.

Krapivinsky G, Krapivinsky L, Renthal N, Santa-Cruz A, Manasian Y, Clapham D Proc Natl Acad Sci U S A. 2017; 114(34):E7092-E7100.

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