scholarly journals Pioneering, chromatin remodeling, and epigenetic constraint in early T-cell gene regulation by SPI1 (PU.1)

2018 ◽  
Vol 28 (10) ◽  
pp. 1508-1519 ◽  
Author(s):  
Jonas Ungerbäck ◽  
Hiroyuki Hosokawa ◽  
Xun Wang ◽  
Tobias Strid ◽  
Brian A. Williams ◽  
...  
2012 ◽  
Vol 90 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Andrea L. Wurster ◽  
Michael J. Pazin

One of the best studied systems for mammalian chromatin remodeling is transcriptional regulation during T cell development. The variety of these studies have led to important findings in T cell gene regulation and cell fate determination. Importantly, these findings have also advanced our knowledge of the function of remodeling enzymes in mammalian gene regulation. First we briefly present biochemical and cell-free analysis of 3 types of ATP dependent remodeling enzymes (SWI/SNF, Mi2, and ISWI) to construct an intellectual framework to understand how these enzymes might be working. Second, we compare and contrast the function of these enzymes during early (thymic) and late (peripheral) T cell development. Finally, we examine some of the gaps in our present understanding.


2009 ◽  
Vol 183 (3) ◽  
pp. 1695-1704 ◽  
Author(s):  
Pujya Agarwal ◽  
Arvind Raghavan ◽  
Sarada L. Nandiwada ◽  
Julie M. Curtsinger ◽  
Paul R. Bohjanen ◽  
...  

2015 ◽  
Vol 37 ◽  
pp. 21-27 ◽  
Author(s):  
Simon H Jiang ◽  
Nan Shen ◽  
Carola G Vinuesa
Keyword(s):  
T Cell ◽  

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2313
Author(s):  
Suk-Ling Ma ◽  
Junyi Wu ◽  
Liuying Zhu ◽  
Ruth Chan ◽  
Amy Wang ◽  
...  

Background: Sarcopenia is a major health problem in older adults. Exercise and nutrient supplementation have been shown to be effective interventions but there are limited studies to investigate their effects on the management of sarcopenia and its possible underlying mechanisms. Here, we studied T cell gene expression responses to interventions in sarcopenia. Methods: The results of this study were part of a completed trial examining the effectiveness of a 12-week intervention with exercise and nutrition supplementation in community-dwelling Chinese older adults with sarcopenia, based on the available blood samples at baseline and 12 weeks from 46 randomized participants from three study groups, namely: exercise program alone (n = 11), combined-exercise program and nutrition supplement (n = 23), and waitlist control group (n = 12). T cell gene expression was evaluated, with emphasis on inflammation-related genes. Real-time PCR (RT-PCR) was performed on CD3 T cells in 38 selected genes. Correlation analysis was performed to relate the results of gene expression analysis with lower limb muscle strength performance, measured using leg extension tests. Results: Our results showed a significant improvement in leg extension for both the exercise program alone and the combined groups (p < 0.001). Nine genes showed significant pre- and post-difference in gene expression over 12 weeks of intervention in the combined group. Seven genes (RASGRP1, BIN1, LEF1, ANXA6, IL-7R, LRRN3, and PRKCQ) showed an interaction effect between intervention and gene expression levels on leg extension in the confirmatory analysis, with confounder variables controlled and FDR correction. Conclusions: Our findings showed that T cell-specific inflammatory gene expression was changed significantly after 12 weeks of intervention with combined exercise and HMB supplementation in sarcopenia, and that this was associated with lower limb muscle strength performance.


Development ◽  
1999 ◽  
Vol 126 (4) ◽  
pp. 733-742 ◽  
Author(s):  
M. Vazquez ◽  
L. Moore ◽  
J.A. Kennison

The trithorax group gene brahma (brm) encodes the ATPase subunit of a chromatin-remodeling complex involved in homeotic gene regulation. We report here that brm interacts with another trithorax group gene, osa, to regulate the expression of the Antennapedia P2 promoter. Regulation of Antennapedia by BRM and OSA proteins requires sequences 5′ to the P2 promoter. Loss of maternal osa function causes severe segmentation defects, indicating that the function of osa is not limited to homeotic gene regulation. The OSA protein contains an ARID domain, a DNA-binding domain also present in the yeast SWI1 and Drosophila DRI proteins. We propose that the OSA protein may target the BRM complex to Antennapedia and other regulated genes.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Daniel Remondini ◽  
Nathan Intrator ◽  
Claudia Sala ◽  
Michela Pierini ◽  
Paolo Garagnani ◽  
...  

2016 ◽  
Vol 24 ◽  
pp. S304
Author(s):  
Kevin G. Haworth ◽  
Christina Ironside ◽  
Hans-Peter Kiem

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