1. The Dysregulation of microRNA-30b Directly Regulates Cystathionine Gamma-Lyase and Exhibits Poor Invasion Activity in Preeclampsia.
- Author
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Saxena S, John BA, Verma N, and Mishra M
- Abstract
Background and objective Preeclampsia (PE) is a severe pregnancy complication characterized by high blood pressure and proteinuria after 23 weeks of gestation. Insufficient trophoblast invasion has been linked to its development. Hydrogen sulfide (H₂S), with its genes cystathionine gamma-lyase (CTH) playing the role of an important vasodilator, may be associated with various diseases including PE. This study investigated the role of microRNA-30b (miR-30b) in trophoblast invasion using HTR-8/SVneo cells, blood, and placental samples Methods The study involved samples from 40 preeclamptic subjects and 40 healthy controls. Gene expression was analyzed via quantitive real-time PCR and enzyme-linked immunosorbent assay (ELISA). The effects of H₂S were simulated using a sodium hydrogen sulfide (NaHS) inhibitor (AOAA), and miR-30b inhibitors were used to assess changes in invasion capacity. Results NaHS treatment enhanced trophoblast invasion, and hypoxia/reoxygenation (H/R) + NaHS-treated cells showed increased invasion compared to H/R-treated cells alone. miR-30b inhibition led to higher expression of CTH, matrix metalloproteinase-9 (MMP-9), and reduced tissue inhibitor of metalloproteinases 1 (TIMP-1) and TIMP-2 expression, improving cell invasion. Patient samples showed lower CTH, MMP-2, and MMP-9 levels in PE, with elevated TIMP-1 and TIMP-2. Protein expression also revealed reduced CTH and MMP-9 in preeclamptic patients. Conclusions Based on our findings, miR-30b influences trophoblast invasion by modulating CTH expression and the MMP/TIMP balance. Enhanced H₂S production improves invasion, suggesting that miR-30b and related pathways can be potential therapeutic targets for PE management., Competing Interests: Human subjects: Consent for treatment and open access publication was obtained or waived by all participants in this study. Institute Ethics Commitee for Post Graduate Research, AIIMS, New Delhi issued approval IEST/T-390/22.07.2015. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2025, Saxena et al.)
- Published
- 2025
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