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  • Author: Liu Tingting x
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Jingyi Luo, Tingting Liu and Weiping Teng

Hashimoto’s thyroiditis (HT) is a common organ-specific autoimmune disease, which develops in 0.3–1.5/1000 subjects annually. The aims of this study were to determine the lncRNA profile in peripheral blood CD4+ T cells from HT patients and then to characterize the potential function of NONHSAT079547.2. A total of 37 HT patients and 50 sex- and age-matched healthy controls were enrolled for high-throughput sequencing. Another 43 HT patients and 50 sex- and age-matched controls were enrolled for validation via real-time PCR. Flow cytometry and CCK8 assays were used to measure cell apoptosis and growth levels. Western blotting was used for measuring the expression of growth- and apoptosis-associated proteins. IL-17 serum concentration and transcriptional level in CD4+ T cells of participants were detected by ELISA and real-time PCR, respectively. The mechanism of competitive endogenous RNA was determined using real-time PCR, ELISA, RNA immunoprecipitation, and dual-luciferase assays in Jurkat cells. A total of 7564 significantly differentially expressed lncRNAs were found, of which 3913 lncRNAs were upregulated and 3651 lncRNAs were downregulated in HT group when compared to control group. NONHSAT079547.2 was significantly upregulated in HT patients and was positively correlated with serum thyroid peroxidase antibody level. Further studies confirmed that NONHSAT079547.2 could promote cell growth and control IL-17 expression and secretion via the NONHSAT079547.2/miR-4716-5p/IL-17 axis.This is the first study to describe the lncRNA profile in CD4+ T cells of HT patients. The studies on the function of NONHSAT079547.2 might elucidate the underlying molecular mechanisms and represent potential biomarkers for HT.

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Kamran Ullah, Tanzil Ur Rahman, Hai-Tao Pan, Meng-Xi Guo, Xin-Yan Dong, Juan Liu, Lu-Yang Jin, Yi Cheng, Zhang-Hong Ke, Jun Ren, Xian-Hua Lin, Xiao-Xiao Qiu, Ting-Ting Wang, He-Feng Huang and Jian-Zhong Sheng

Previous studies have shown that increasing estradiol concentrations had a toxic effect on the embryo and were deleterious to embryo adhesion. In this study, we evaluated the physiological impact of estradiol concentrations on endometrial cells to reveal that serum estradiol levels probably targeted the endometrium in controlled ovarian hyperstimulation (COH) protocols. An attachment model of human choriocarcinoma (JAr) cell spheroids to receptive-phase endometrial epithelial cells and Ishikawa cells treated with different estradiol (10−9 M or 10−7 M) concentrations was developed. Differentially expressed protein profiling of the Ishikawa cells was performed by proteomic analysis. Estradiol at 10−7 M demonstrated a high attachment rate of JAr spheroids to the endometrial cell monolayers. Using iTRAQ coupled with LC–MS/MS, we identified 45 differentially expressed proteins containing 43 significantly upregulated and 2 downregulated proteins in Ishikawa cells treated with 10−7 M estradiol. Differential expression of C3, plasminogen and kininogen-1 by Western blot confirmed the proteomic results. C3, plasminogen and kininogen-1 localization in human receptive endometrial luminal epithelium highlighted the key proteins as possible targets for endometrial receptivity and interception. Ingenuity pathway analysis of differentially expressed proteins exhibited a variety of signaling pathways, including LXR/RXR activation pathway and acute-phase response signaling and upstream regulators (TNF, IL6, Hmgn3 and miR-140-3p) associated with endometrial receptivity. The observed estrogenic effect on differential proteome dynamics in Ishikawa cells indicates that the human endometrium is the probable target for serum estradiol levels in COH cycles. The findings are also important for future functional studies with the identified proteins that may influence embryo implantation.