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  • Title: Requirement of heart and neural crest derivatives-expressed transcript 2 during decidualization of human endometrial stromal cells in vitro.
    Author: Shindoh H, Okada H, Tsuzuki T, Nishigaki A, Kanzaki H.
    Journal: Fertil Steril; 2014 Jun; 101(6):1781-90.e1-5. PubMed ID: 24745730.
    Abstract:
    OBJECTIVE: To investigate the role of heart and neural crest derivatives-expressed transcript 2 (HAND2) during decidualization of human endometrial stromal cells (ESCs). DESIGN: In vitro experiment. SETTING: Research laboratory. PATIENT(S): Twenty-six patients undergoing hysterectomy for benign reasons. INTERVENTION(S): ESCs were cultured for 12 days with HAND2 small interfering RNA (siRNA) or nonsilencing RNA during decidualization by medroxyprogesterone acetate (MPA) and E2. MAIN OUTCOME MEASURE(S): Decidualization was monitored by changes in cellular morphology and the expression of several decidual-specific genes. RESULT(S): HAND2 siRNA effectively suppressed HAND2 levels in ESCs after 12 days of E2 + MPA treatment. ESCs cultured with HAND2 siRNA retained a long fibroblast-like shape, whereas the cells cultured with control siRNA transformed into enlarged polygonal cells. Silencing of HAND2 expression significantly reduced connexin-43 involved in the morphologic changes. HAND2 silencing significantly reduced the mRNA levels of fibulin-1, prolactin, tissue inhibitor of metalloproteinase 3, interleukin-15, and forkhead box O1A (FOXO1A), but had no effect on the mRNA levels of dickkopf-1, serum glucocorticoid kinase 1, and insulin-like growth factor-binding protein 5. HAND2 siRNA effectively suppressed the levels of nuclear FOXO1A protein as a regulator of decidualization. CONCLUSION(S): These results suggest that HAND2 plays a key role in the regulation of progestin-induced decidualization of human ESCs.
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