Assessment of TET1 gene expression, DNA methylation and H3K27me3 level of its promoter region in eutopic endometrium of women with endometriosis and infertility

被引:11
作者
Adamczyk, Magdalena [1 ]
Rawluszko-Wieczorek, Agnieszka Anna [2 ]
Wirstlein, Przemyslaw [1 ]
Nowicki, Michal [2 ]
Jagodzinski, Pawel Piotr [3 ]
Wender-Ozegowska, Ewa [1 ]
Kedzia, Malgorzata [1 ]
机构
[1] Poznan Univ Med Sci, Dept Reprod, PL-60535 Poznan, Poland
[2] Poznan Univ Med Sci, Dept Histol & Embriol, PL-60781 Poznan, Poland
[3] Poznan Univ Med Sci, Dept Biochem & Mol Biol, PL-60781 Poznan, Poland
关键词
DNA methylation; Endometriosis; Eutopic endometrium; Infertility; TET protein; CANDIDATE GENES; CLASSIFICATION; PREVALENCE; RECIPIENTS; WINDOW; CELLS;
D O I
10.1016/j.biopha.2022.112989
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Endometriosis is the cause of infertility. The eutopic endometrium of women with endometriosis showed an aberrant expression pattern of multitude genes. The role of TET1 protein in the pathogenesis of endometriosis and related infertility is not sufficiently known. Further, knowledge on TET1 transcriptional control still remains incomplete. The aim of the study was assessment of TET1 gene expression, DNA methylation and H3K27me3 level of its promoter region in eutopic endometrium of women with endometriosis and infertility. The study included 44 infertile patients with endometriosis (IWE) and 77 infertile (IW) and fertile (FW) patients without endometriosis. The research material was eutopic endometrium. The TET1 mRNA level was analyzed by qPCR. Western blot was used to evaluate the level of TET1 protein. The level of DNA methylation and H3K27me3 level of TET1 gene's promoter region were assessed using HRM and ChIP qPCR, respectively. The level of TET1 expression (TET1 mRNA; TET1 protein level) was lower in IWE during the implantation window (p < 0.001; p = 0.0329). The level of TET1 DNA methylation was higher in the secretory endometrium in mild and advanced IWE (p < 0.004; p < 0.008). H3K27me3 level did not differ between the study groups. The diminished expression of TET1 gene during the secretory phase, may account for the aberrant process of embryonic implantation in infertile endometriosis patients. DNA hypermethylation of TET1 gene is a potential relevant regulator of its expression. H3K27me3 occupancy does not affect the expression of TET1 gene in our study group.
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页数:10
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