PMID- 26935516 OWN - NLM STAT- MEDLINE DCOM- 20161226 LR - 20220408 IS - 1791-244X (Electronic) IS - 1107-3756 (Print) IS - 1107-3756 (Linking) VI - 37 IP - 4 DP - 2016 Apr TI - Lentivirus-mediated PHLDA2 overexpression inhibits trophoblast proliferation, migration and invasion, and induces apoptosis. PG - 949-57 LID - 10.3892/ijmm.2016.2508 [doi] AB - Inadequate trophoblast invasion and increased trophoblast apoptosis cause serious pregnancy complications. Pleckstrin homology-like domain, family Alpha, member 2 (PHLDA2) has been linked to fetal size at birth and growth restriction in a number of studies. However, the impact of PHLDA2 on trophoblast function had not been studied previously, to the best of our knowledge. In the present study, immunofluorescence staining demonstrated that primary trophoblasts isolated from placental villous tissues were positive for cytokeratin 18 (CK18), vimentin and human placental lactogen (hPL). JEG-3 cells and primary trophoblasts were infected with lentivirus overexpressing PHLDA2. RT-qPCR and western blot analysis detected high levels of PHLDA2. A Cell Counting Kit-8 (CCK-8) assay showed that PHLDA2 overexpression inhibited trophoblast proliferation. In addition, PHLDA2 significantly induced apoptosis, as evidenced by Annexin V-FITC/propidium iodide (PI) and Hoechst staining, along with activation of Bax and caspase-3 and also decreased Bcl-2 expression. Further investigation showed that PHLDA2 effectively induced reactive oxygen species (ROS) generation, caused cytochrome c release from the mitochondria into the cytosol and decreased mitochondrial membrane potential. PHLDA2 likely induced apoptosis through the mitochondrial pathway. Wound healing and Transwell assays indicated that PHLDA2 overexpression efficiently suppressed cell migration and invasion. These data suggest that PHLDA2 plays an important role in the occurrence and development of pregnancy complications by promoting trophoblast apoptosis and suppressing cell invasion. FAU - Jin, Feng AU - Jin F AD - Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China. FAU - Qiao, Chong AU - Qiao C AD - Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China. FAU - Luan, Nannan AU - Luan N AD - Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China. FAU - Li, Hui AU - Li H AD - Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China. LA - eng PT - Journal Article DEP - 20160226 PL - Greece TA - Int J Mol Med JT - International journal of molecular medicine JID - 9810955 RN - 0 (Nuclear Proteins) RN - 0 (Reactive Oxygen Species) RN - 0 (TSSC3 protein) SB - IM MH - *Apoptosis MH - Cell Line MH - Cell Movement MH - *Cell Proliferation MH - Cells, Cultured MH - Female MH - Humans MH - Lentivirus/genetics MH - Membrane Potential, Mitochondrial MH - Nuclear Proteins/*genetics/metabolism MH - Pregnancy MH - Pregnancy Complications/etiology/genetics/metabolism MH - Reactive Oxygen Species/metabolism MH - Trophoblasts/*cytology/metabolism MH - *Up-Regulation PMC - PMC4790661 EDAT- 2016/03/05 06:00 MHDA- 2016/12/27 06:00 PMCR- 2016/02/26 CRDT- 2016/03/04 06:00 PHST- 2015/07/30 00:00 [received] PHST- 2016/01/07 00:00 [accepted] PHST- 2016/03/04 06:00 [entrez] PHST- 2016/03/05 06:00 [pubmed] PHST- 2016/12/27 06:00 [medline] PHST- 2016/02/26 00:00 [pmc-release] AID - ijmm-37-04-0949 [pii] AID - 10.3892/ijmm.2016.2508 [doi] PST - ppublish SO - Int J Mol Med. 2016 Apr;37(4):949-57. doi: 10.3892/ijmm.2016.2508. Epub 2016 Feb 26.