What question did this study set out to answer?

To investigate the transcriptional mechanisms and transcription factor interactions that regulate mucosal mast cell–specific protease genes Mcpt1 and Mcpt2 in response to TGF-β stimulation.

January 31, 2020The Journal of ImmunologyOpen Access

Cooperative Regulation of the Mucosal Mast Cell–Specific Protease Genes Mcpt1 and Mcpt2 by GATA and Smad Transcription Factors

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Authors

KKKazumi KasakuraLa Jolla Institute for Immunology KNKazuki NagataTokyo University of Science RMR. MiuraTokyo University of Science

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Implication

Experimental study reveals cooperative regulation of Mcpt1 and Mcpt2 by GATA2 and Smad proteins in mouse mast cells, highlighting transcriptional mechanisms of mucosal immunity.

Key Points

To investigate the transcriptional mechanisms and transcription factor interactions that regulate mucosal mast cell–specific protease genes Mcpt1 and Mcpt2 in response to TGF-β stimulation.
Stimulated mouse bone marrow–derived mast cells (BMMCs) with TGF-β and performed targeted knockdown of Smad2, Smad3, Smad4, GATA1, and GATA2 using small interfering RNA.
Evaluated GATA2 recruitment, histone H4 acetylation, and transcription factor interactions at conserved GATA–Smad motifs using reporter assays, chromatin analysis, immunoprecipitation, and Western blotting.
TGF-β stimulation strongly induced Mcpt1 and Mcpt2 mRNA expression, which was significantly suppressed by knockdown of Smad2, Smad4, GATA1, or GATA2, and moderately reduced by Smad3 knockdown.
TGF-β accelerated GATA2 recruitment and histone H4 acetylation at conserved distal GATA–Smad motifs and promoted physical interaction between GATA2 and Smad4 to transactivate Mcpt1 and Mcpt2.

Cite This Study

Kasakura et al. (2020) studied this question.

synapsesocial.com/papers/6a868e40bf8a68ea2b6ed194 https://doi.org/10.4049/jimmunol.1900094

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Implication

Experimental study reveals cooperative regulation of Mcpt1 and Mcpt2 by GATA2 and Smad proteins in mouse mast cells, highlighting transcriptional mechanisms of mucosal immunity.

Cooperative Regulation of the Mucosal Mast Cell–Specific Protease Genes Mcpt1 and Mcpt2 by GATA and Smad Transcription Factors

Discussion

Member takes

Implication

Key Points

Cite This Study

Cooperative Regulation of the Mucosal Mast Cell–Specific Protease Genes Mcpt1 and Mcpt2 by GATA and Smad Transcription Factors

Discussion

Member takes

Implication

Key Points

Cite This Study

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