PMID- 29130646 OWN - NLM STAT- MEDLINE DCOM- 20180705 LR - 20180713 IS - 1521-6551 (Electronic) IS - 1521-6543 (Linking) VI - 69 IP - 12 DP - 2017 Dec TI - Investigating the expression of MMPs and TIMPs in preterm placenta and role of CpG methylation in regulating MMP-9 expression. PG - 985-993 LID - 10.1002/iub.1687 [doi] AB - Matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs (TIMPs) are crucial to the processes of normal labor and parturition. We have previously reported aberrant protein levels of MMPs in placenta of women delivering preterm as compared to term. In this study, we examine the mRNA levels of MMPs (MMP-1, MMP-2, and MMP-9) and TIMPs (TIMP-1, TIMP-2) in the placenta from women delivering preterm as compared with term and further study the promoter DNA methylation of the MMP-9 gene in a sub-sample of term and preterm placentae. A total of 110 women were included in the study; 56 delivered term and 54 delivered preterm. MMP and TIMP mRNA levels were determined by Taqman-based qPCR. Promoter CpG methylation of MMP-9 gene was studied on a subset of 10 term and 8 preterm placenta using Epitect Methyl-II PCR assay kit. The mRNA levels of MMP-1,-2 were higher and those of TIMP-1,-2 were lower in the placentae of women delivering preterm. MMP-9 levels were comparable between the two groups. Among women undergoing spontaneous vaginal deliveries, higher mRNA levels of MMP-1, -2 and -9 were seen in the placentae of those delivering preterm as compared to term. Similar results were seen in women undergoing preterm labor as compared to term. MMP-9 gene promoter was hypomethylated in preterm placenta as compared to term placenta, while the mRNA levels were comparable between the two groups. The observed imbalance between MMP and TIMP expression may have prematurely triggered the signaling cascade leading to preterm birth. (c) 2017 IUBMB Life, 69(12):985-993, 2017. CI - (c) 2017 International Union of Biochemistry and Molecular Biology. FAU - Sundrani, Deepali AU - Sundrani D AD - Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India. FAU - Narang, Ankita AU - Narang A AD - Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India. FAU - Mehendale, Savita AU - Mehendale S AD - Department of Obstetrics and Gynecology, Bharati Hospital and Research Center, Pune, Maharashtra, India. FAU - Joshi, Sadhana AU - Joshi S AD - Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India. FAU - Chavan-Gautam, Preeti AU - Chavan-Gautam P AUID- ORCID: 0000-0001-8514-3171 AD - Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20171111 PL - England TA - IUBMB Life JT - IUBMB life JID - 100888706 RN - 0 (RNA, Messenger) RN - 0 (TIMP1 protein, human) RN - 0 (TIMP2 protein, human) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - 127497-59-0 (Tissue Inhibitor of Metalloproteinase-2) RN - EC 3.4.24.24 (MMP2 protein, human) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.35 (MMP9 protein, human) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - EC 3.4.24.7 (MMP1 protein, human) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) SB - IM MH - Adult MH - Case-Control Studies MH - *CpG Islands MH - DNA Methylation MH - *Epigenesis, Genetic MH - Female MH - Humans MH - Infant, Newborn MH - Infant, Premature MH - Matrix Metalloproteinase 1/genetics/metabolism MH - Matrix Metalloproteinase 2/genetics/metabolism MH - Matrix Metalloproteinase 9/*genetics/metabolism MH - Parturition/physiology MH - Placenta/*metabolism/pathology MH - Pregnancy MH - Promoter Regions, Genetic MH - RNA, Messenger/genetics/metabolism MH - Signal Transduction MH - Tissue Inhibitor of Metalloproteinase-1/*genetics/metabolism MH - Tissue Inhibitor of Metalloproteinase-2/*genetics/metabolism OTO - NOTNLM OT - epigenetics OT - extra cellular matrix OT - gene regulation OT - placenta OT - pregnancy EDAT- 2017/11/14 06:00 MHDA- 2018/07/06 06:00 CRDT- 2017/11/14 06:00 PHST- 2017/07/26 00:00 [received] PHST- 2017/09/26 00:00 [accepted] PHST- 2017/11/14 06:00 [pubmed] PHST- 2018/07/06 06:00 [medline] PHST- 2017/11/14 06:00 [entrez] AID - 10.1002/iub.1687 [doi] PST - ppublish SO - IUBMB Life. 2017 Dec;69(12):985-993. doi: 10.1002/iub.1687. Epub 2017 Nov 11.