Epigenetic Dynamics of HOXA10 Gene in Infertile Women With Endometriosis

Endometriosis, which has been considered an epigenetic disease, is a prevalent gynecological disorder worldwide. With an emphasis on changes in the HOXA10 gene expression of the endometrium of women with endometriosis, the aim of this study was to investigate HOXA10 gene expression and its correlation with the epigenetic characteristics of the specific promoter region of the gene in the eutopic and ectopic endometrium of women with endometriosis. Thirty-six patients and 21 healthy fertile women were recruited as participants of this study. In this study group, chromatin immunoprecipitation and real-time polymerase chain reaction technique were performed to quantify the epigenetic profile of HOXA10, parallel to its expression. During the secretory phase in eutopic tissues, reduction in HOXA10 gene expression was identified along with lower acetylation and higher methylation of H3K9 as well as higher incorporation of MeCP2 on the HOXA10 gene promoter. In contrast with control group, studies of ectopic endometriotic lesions in the secretory phase demonstrate a correlation between induction of HOXA10 gene and higher levels of H3K9ac, H3K27me3, and H3K4me3 in the promoter region of the HOXA10 gene. Further distinctions from the control group were revealed in the proliferative phase of the ectopic endometrium, where upregulation of HOXA10 coincided with lower incorporation of MeCP2 and higher levels of H3K4me3 in the promoter region. Since it is well known that aberrant expression of HOXA10 is involved in pathogenesis of the endometrium, our data emphasized the epigenetic role of this gene aberration related to clinical pathophysiology of endometriosis. Similar content being viewed by others

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Sci. 26, 88–96 (2019). https://doi.org/10.1177/1933719118766255 Published: Version of record: Issue date: DOI: https://doi.org/10.1177/1933719118766255