Journal
GENES
Volume 14, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/genes14020496
Keywords
rotator cuff tendinopathy; epigenetics; histone modifications; chromatin immunoprecipitation; extracellular matrix; inflammation
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The development and progression of rotator cuff tendinopathy (RCT) is influenced by multiple factors, including genetics and epigenetics. This study investigated the role of histone modifications in RCT using chromatin immunoprecipitation sequencing. The findings suggest that epigenetic control, particularly through histone modifications, plays a role in the development and progression of RCT.
The development and progression of rotator cuff tendinopathy (RCT) is multifactorial and likely to manifest through a combination of extrinsic, intrinsic, and environmental factors, including genetics and epigenetics. However, the role of epigenetics in RCT, including the role of histone modification, is not well established. Using chromatin immunoprecipitation sequencing, differences in the trimethylation status of H3K4 and H3K27 histones in late-stage RCT compared to control were investigated in this study. For H3K4, 24 genomic loci were found to be significantly more trimethylated in RCT compared to control (p < 0.05), implicating genes such as DKK2, JAG2, and SMOC2 in RCT. For H3K27, 31 loci were shown to be more trimethylated (p < 0.05) in RCT compared to control, inferring a role for EPHA3, ROCK1, and DEF beta 115. Furthermore, 14 loci were significantly less trimethylated (p < 0.05) in control compared to RCT, implicating EFNA5, GDF6, and GDF7. Finally, the TGF beta signaling, axon guidance, and regulation of focal adhesion assembly pathways were found to be enriched in RCT. These findings suggest that the development and progression of RCT is, at least in part, under epigenetic control, highlighting the influence of histone modifications in this disorder and paving the way to further understand the role of epigenome in RCT.
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