How do chromatin remodeling and cooperating enzymes regulate gene expression to drive cell fate specification?

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We study the regulation and the activity of enzymes that remodel chromatin and how these enzymes promote normal tissue differentiation.

 

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Discovering how cell differentiation is regulated is critical to understanding fundamental biology and to proposing new treatment methods for differentiation-centered diseases, including cancer.

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We utilize molecular biology, biochemistry, and epigenetic experimental techniques to study mammalian SWI/SNF-mediated chromatin remodeling.

 

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We are a friendly and collaborative team of researchers.


Research Highlights

Muscle-specific pyruvate kinase isoforms, PKM1 and PKM2, regulate mammalian SWI/SNF proteins and histone 3 phosphorylation during myoblast differentiation
Olea-Flores M, Sharma T, Verdejo-Torres O, DiBartolomeo I, Thompson PR, Padilla-Benavides T, Imbalzano AN.

FASEB J. 2024 Jun 15;38(11):e23702. doi: 10.1096/fj.202400784R. PMID: 38837439; PMCID: PMC11268309.


The Bromodomains of the mammalian SWI/SNF (mSWI/SNF) ATPases Brahma (BRM) and Brahma Related Gene 1 (BRG1) promote chromatin interaction and are critical for skeletal muscle differentiation.
Sharma T, Robinson DCL, Witwicka H, Dilworth FJ, Imbalzano AN.

Nucleic Acids Res. 2021 Aug 20;49(14):8060-8077. doi: 10.1093/nar/gkab617. PMID: 34289068; PMCID: PMC8373147.



 


Calcineurin Broadly Regulates the Initiation of Skeletal Muscle-Specific Gene Expression by Binding Target Promoters and Facilitating the Interaction of the SWI/SNF Chromatin Remodeling Enzyme
Witwicka H, Nogami J, Syed SA, Maehara K, Padilla-Benavides T, Ohkawa Y, Imbalzano AN.

Mol Cell Biol. 2019 Sep 11;39(19):e00063-19. doi: 10.1128/MCB.00063-19. PMID: 31308130; PMCID: PMC6751634.


Opposing calcium-dependent signalling pathways control skeletal muscle differentiation by regulating a chromatin remodelling enzyme.
Nasipak BT, Padilla-Benavides T, Green KM, Leszyk JD, Mao W, Konda S, Sif S, Shaffer SA, Ohkawa Y, Imbalzano AN.

Nat Commun. 2015 Jun 17;6:7441. doi: 10.1038/ncomms8441. PMID: 26081415; PMCID: PMC4530624.

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