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Wang G, Zhang L, Yan C, Zhang Y. Upregulation of microRNA-576-5p protects from steroid-induced avascular necrosis of the femoral head by suppressing ANXA2. Cell Cycle 2022; 21:49-62. [PMID: 34890298 PMCID: PMC8837248 DOI: 10.1080/15384101.2021.1988377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Steroid-induced avascular necrosis of the femoral head (SANFH) is a common orthopedic disease. Evidence has shown that microRNAs (miRNAs) played essential roles in the development of SANFH. Nevertheless, the role of miR-576-5p in SANFH remains unknown. The rabbit SANFH models were constructed by injection of horse serum and methylprednisolone. Bone mineral density (BMD) of the proximal femur (including the femoral head), pathological changes, bone cell apoptosis and expressions of OPG/RANK in femoral head bone tissue were assessed upon treatment of up-regulation of miR-576-5p or knockdown of ANXA2. Osteoblasts were extracted from SANFH rabbit femoral head and cultured. Proliferation, apoptosis and mineralization were tested upon treatment of up-regulation of miR-576-5p or knockdown of ANXA2. The targeting relationship between miR-576-5p and ANXA2 was verified. Up-regulated miR-576-5p or down-regulated ANXA2 inhibited the decrease of BMD, improved pathological changes, limited cell apoptosis and increased OPG/RANKL ratio in bone tissues of SANFH rabbits. Up-regulating miR-576-5p or down-regulating ANXA2 promoted proliferation and mineralization and inhibited apoptosis of osteoblasts from SANFH rabbits. In addition, ANXA2 was found to be a target gene of miR-576-5p. Furthermore, overexpression of ANXA2 abolished the protective role of elevated miR-576-5p against femoral head necrosis. Elevated miR-576-5p or reduced ANXA2 repressed the progression of SANFH. This study may provide novel biomarkers for SANFH diagnosis and treatment.
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Affiliation(s)
- Gang Wang
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Lecheng Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Chao Yan
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yuelei Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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2
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Zou H, Mao Q. Circ_0037078 promotes trophoblast cell proliferation, migration, invasion and angiogenesis by miR-576-5p/IL1RAP axis. Am J Reprod Immunol 2021; 87:e13507. [PMID: 34724268 DOI: 10.1111/aji.13507] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/20/2021] [Accepted: 10/27/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Preeclampsia (PE) is a common hypertensive disorder of pregnancy. Recent studies have suggested that circular RNAs (circRNAs) play a pathological role in PE. Herein, this study aimed to investigate the action and mechanism of circ_0037078 in PE process. METHODS The quantitative real-time PCR (qRT-PCR) and Western blot were used to determine the expression levels of RNAs and genes. Cell proliferation, migration, invasion and angiogenesis were evaluated by using cell counting kit-8 (CCK-8), colony formation, transwell, and tube formation assays, respectively. The target relation between miR-576-5p and IL1RAP (Interleukin-1 receptor accessory protein) and circ_0037078 was predicted by bioinformatics analysis and verified by dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. RESULTS Circ_0037078 expression was higher in placental tissues of patients with PE than that of normal control. Knockdown of circ_0037078 led to an enhancement of the proliferation, migration, invasion, and angiogenesis in trophoblast cells. Mechanistically, circ_0037078 acted as a sponge for miR-576-5p, thus elevating the expression of IL1RAP, which was targeted by IL1RAP. Further rescue experiments suggested that miR-576-5p inhibition reversed the effects of circ_0037078 knockdown on above behaviors of trophoblast cells. Moreover, miR-576-5p overexpression enhanced the proliferative, migratory, invasive, angiogenic phenotypes of trophoblast cells, which were attenuated by IL1RAP up-regulation. CONCLUSION Circ_0037078 knockdown promotes trophoblast cell proliferation, migration, invasion, and angiogenesis in vitro by miR-576-5p/IL1RAP axis, providing a novel insight into the etiology of PE.
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Affiliation(s)
- Hong Zou
- Department of Gynecology, Jingmen First People's Hospital, Jingmen, China
| | - Qinghua Mao
- Department of Obstetrics, Jingmen First People's Hospital, Jingmen, China
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Jie Q, Sun F, Li Q, Zhu J, Wei Y, Yang H, Long P, Wang Z, Yang X, Li D, Huang L, Ma Y. Downregulated ribosomal protein L39 inhibits trophoblast cell migration and invasion by targeting E-cadherin in the placenta of patients with preeclampsia. FASEB J 2021; 35:e21322. [PMID: 33710681 DOI: 10.1096/fj.202002061r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/06/2020] [Accepted: 12/14/2020] [Indexed: 12/27/2022]
Abstract
Early-onset preeclampsia (PE) is a pregnancy complication that can lead to severe adverse maternal and fetal outcomes. However, the mechanisms underlying the development of early-onset PE are not fully understood. Ribosomal protein L39 (RPL39) is a member of the S39E family of ribosomal proteins that plays an important role in stem cell self-renewal, cancer metastasis, and chemoresistance. In this study, we aimed to explore the potential function of RPL39 in placental trophoblast cells. We analyzed the expression of RPL39 in early-onset PE and normal placental tissues using real-time PCR, western blot analysis, and immunohistochemistry. The results showed that RPL39 was markedly downregulated in early-onset PE placental tissues. RPL39 knockdown inhibited trophoblast cell proliferation, migration, and invasion, as well as placental explant outgrowth. Flow cytometry analysis suggested that knockdown of RPL39 resulted in cell cycle arrest at the G0/G1 phase, but had no significant effect on cell apoptosis. We also found that RPL39 knockdown could alter cell morphology. We then measured the expression of the epithelial cell marker E-cadherin following knockdown of RPL39 in Bewo and HTR8/SVneo cells. RPL39 knockdown increased the expression of E-cadherin. Furthermore, E-cadherin expression was upregulated in placental explant outgrowth tissues transfected with RPL39 small interfering RNA. In conclusion, RPL39 plays an essential role in proliferation, invasion, and migration of trophoblast cells by targeting E-cadherin. Our findings provide novel insight into the mechanisms underlying the occurrence of early-onset PE.
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Affiliation(s)
- Qiuling Jie
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Fei Sun
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Qi Li
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Juan Zhu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yunjian Wei
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Huamei Yang
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Ping Long
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Zhen Wang
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Xiaohui Yang
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Dan Li
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Liping Huang
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanlin Ma
- Department of Hainan Provincial Key Laboratory for human reproductive medicine and Genetic Research, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Reproductive Medicine, the First Affiliated Hospital of Hainan Medical University, Haikou, China
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4
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Kołat D, Kałuzińska Ż, Bednarek AK, Płuciennik E. WWOX Loses the Ability to Regulate Oncogenic AP-2γ and Synergizes with Tumor Suppressor AP-2α in High-Grade Bladder Cancer. Cancers (Basel) 2021; 13:cancers13122957. [PMID: 34204827 PMCID: PMC8231628 DOI: 10.3390/cancers13122957] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/03/2021] [Accepted: 06/10/2021] [Indexed: 02/07/2023] Open
Abstract
The cytogenic locus of the WWOX gene overlaps with the second most active fragile site, FRA16D, which is present at a higher frequency in bladder cancer (BLCA) patients with smoking habit, a known risk factor of this tumor. Recently, we demonstrated the relevance of the role of WWOX in grade 2 BLCA in collaboration with two AP-2 transcription factors whose molecular actions supported or opposed pro-cancerous events, suggesting a distinct character. As further research is needed on higher grades, the aim of the present study was to examine WWOX-AP-2 functionality in grade 3 and 4 BLCA using equivalent in vitro methodology with additional transcriptome profiling of cellular variants. WWOX and AP-2α demonstrated similar anti-cancer functionality in most biological processes with subtle differences in MMP-2/9 regulation; this contradicted that of AP-2γ, whose actions potentiated cancer progression. Simultaneous overexpression of WWOX and AP-2α/AP-2γ revealed that single discrepancies appear in WWOX-AP-2α collaboration but only at the highest BLCA grade; WWOX-AP-2α collaboration was considered anti-cancer. However, WWOX only appeared to have residual activity against oncogenic AP-2γ in grade 3 and 4: variants with either AP-2γ overexpression alone or combined WWOX and AP-2γ overexpression demonstrated similar pro-tumoral behavior. Transcriptome profiling with further gene ontology certified biological processes investigated in vitro and indicated groups of genes consisting of AP-2 targets and molecules worth investigation as biomarkers. In conclusion, tumor suppressor synergism between WWOX and AP-2α is unimpaired in high-grade BLCA compared to intermediate grade, yet the ability of WWOX to guide oncogenic AP-2γ is almost completely lost.
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Zhao X, Liu F, Zhang J, Zhang J, Zhang L, Chen L. LINC01128 - miR-16 interaction regulates the migration and invasion of human chorionic trophoblast cells. Hypertens Pregnancy 2021; 40:152-161. [PMID: 33881945 DOI: 10.1080/10641955.2021.1917602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: Pre-eclampsia (PE) is a major complication of pregnancy, but its pathogenesis is unclear. This study explored the role of LINC01128 in the progression of PE, and its interaction with miR-16 on the behaviors of trophoblasts.Methods: The mRNA levels of LINC01128 and miR-16 in placental tissues and HTR-8/SVneo cells were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). Cell Counting Kit (CCK)-8, wound healing assay and transwell assay were used to detect proliferation, migration and invasion. E-Cadherin, Vimentin, Matrix metalloproteinase 2 (MMP2) and MMP9 protein expressions were detected by Western blot. The correlation between LINC01128 and miR-16 was determined and verified by starBase and dual-luciferase assay.Results: The expression of LINC01128 was downregulated in PE. Overexpression of LINC01128 promoted LINC01128 expression, cell proliferation, migration, invasion and the expressions of Vimentin, MMP2 and MMP9, but inhibited the expression of E-Cadherin. SiLINC01128 showed opposite effects. MiR-16 interacted with LINC01128, and miR-16 was high-expressed in PE placentae. MiR-16 inhibitor promoted cell proliferation, migration, invasion and related protein expressions, but inhibited the expression of E-Cadherin. However, siLINC01128 inhibited the regulatory effect of miR-16 inhibitor on HTR-8/Svneo cells.Conclusion: LINC01128/miR-16 is involved in HTR-8/SVneo cells by regulating the migration and invasion of human chorionic trophoblast cells.
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Affiliation(s)
- Xinyuan Zhao
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, China
| | - Fei Liu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Air Force Medical University, Xi'an, 710038, China
| | - Jin Zhang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, China
| | - Jianhua Zhang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, China
| | - Ludan Zhang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, China
| | - Lin Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, China
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6
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Li Y, Zhuang J. miR-345-3p serves a protective role during gestational diabetes mellitus by targeting BAK1. Exp Ther Med 2020; 21:2. [PMID: 33235611 PMCID: PMC7678625 DOI: 10.3892/etm.2020.9434] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 03/18/2020] [Indexed: 02/07/2023] Open
Abstract
Recent studies have demonstrated that microRNAs (miRs) serve a crucial role during the development of gestational diabetes mellitus (GDM). However, the mechanisms underlying miR-345-3p and its protective role during GDM have not been previously reported. The present study investigated miR-345-3p expression and function in vitro, and the possible molecular mechanisms underlying GDM. Compared with healthy pregnant women, miR-345-3p was downregulated in the placental tissue and peripheral blood of patients with GDM. Further investigation revealed that BCL2-antagonist/killer 1 (BAK1) was a predicted target gene of miR-345-3p, and the expression of BAK1 was significantly increased in patients with GDM compared with healthy pregnant women. In vitro analysis revealed that miR-345-3p mimic significantly increased cell viability, migration and invasion, inhibited apoptosis, upregulated Bcl-2 and matrix metallopeptidase 9 expression, and decreased Bax expression compared with the control group. Furthermore, miR-245-3p mimic-induced alterations were reversed by BAK1 overexpression. The results suggested that miR-345-3p overexpression exhibited a protective role in patients with GDM by inhibiting HTR8-/SVneo cell apoptosis, and promoting cell proliferation and migration via targeting BAK1. The use of miR-345-3p for the diagnosis of GDM requires further investigation.
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Affiliation(s)
- Yuxia Li
- Department of Gynecology and Obstetrics, Wuhan Children's Hospital, Wuhan Maternal and Child Healthcare Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430010, P.R. China
| | - Jun Zhuang
- Department of Obstetrics, Lianshui County People's Hospital, Huai'an, Jiangsu 223400, P.R. China
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7
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Teng L, Liu P, Song X, Wang H, Sun J, Yin Z. Long Non-Coding RNA Nuclear-Enriched Abundant Transcript 1 (NEAT1) Represses Proliferation of Trophoblast Cells in Rats with Preeclampsia via the MicroRNA-373/FLT1 Axis. Med Sci Monit 2020; 26:e927305. [PMID: 33093438 PMCID: PMC7590520 DOI: 10.12659/msm.927305] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Preeclampsia (PE) remains one of the primary causes of maternal morbidity and mortality worldwide. This study was designed to investigate the relevance of long non-coding RNA (lncRNA) nuclear-enriched abundant transcript 1 (NEAT1) and downstream molecules in trophoblast cell proliferation and apoptosis. Material/Methods NEAT1 expression in the placental tissues of rats with PE was analyzed by reverse transcriptionquantitative polymerase chain reaction. The role of NEAT in trophoblast cell proliferation, migration, invasion, and apoptosis was assessed by transfecting pcDNA-NEAT1 and siRNA-NEAT1 into trophoblast cells. The microRNA (miRNA) binding to NEAT1 and the genes targeted by the screened miRNAs were predicted by Starbase, and the mechanism of action of NEAT1 in PE was further investigated. Results The expression of NEAT1 lncRNA was markedly higher in placental samples of PE than control rats. Ectopic expression of NEAT1 repressed trophoblast cell proliferation, migration, invasion, and colony formation, but facilitated cell apoptosis, whereas NEAT1 downregulation resulted in the opposite effects. NEAT1 was found to act as a molecular sponge for miR-373, regulating Fms-like tyrosine kinase-1 (FLT-1) to modulate PE development. Conclusions NEAT1 may contribute to PE development by regulating trophoblast cell proliferation and apoptosis. These findings may provide a new perspective for understanding the etiology and pathogenesis of PE.
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Affiliation(s)
- Lingling Teng
- Department of Obstetrics, Liaocheng Second People's Hospital, Liaocheng, Shandong, China (mainland)
| | - Pingping Liu
- Department of Clinical Laboratory, Qingdao Sixth People's Hospital, Qingdao, Shandong, China (mainland)
| | - Xiao Song
- Department of Clinical Laboratory Medicine, Chiping County People's Hospital, Liaocheng, Shandong, China (mainland)
| | - Hui Wang
- Department of Pathology, Liaocheng Dongchangfu District Maternal and Child Health Hospital, Liaocheng, Shandong, China (mainland)
| | - Jing Sun
- Department of Neonatology, Liaocheng Dongchangfu District Maternal and Child Health Hospital, Liaocheng, Shandong, China (mainland)
| | - Zhongxia Yin
- Department of High Risk Obstetrics, Zaozhuang Maternal and Child Health Care Hospital, Zaozhuang, Shandong, China (mainland)
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8
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Manley CN, Deepak V, Ravikumar N, Smith AK, Knight AK, Badell ML, Sidell N, Rajakumar A. Transcription factor AP2A affects sFLT1 expression and decidualization in decidual stromal cells: Implications to preeclampsia pathology. Pregnancy Hypertens 2020; 21:152-158. [PMID: 32535226 DOI: 10.1016/j.preghy.2020.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 12/21/2022]
Abstract
Preeclampsia (PE) yields a spectrum of phenotypic expression, leading to varying degrees of hypertension, maternal renal dysfunction and placental insufficiency with resultant maternal and neonatal morbidity. Increased sFLT1 expression contributing to angiogenic factor imbalance, placental hypoxia, failed immune adaptation to the fetus and defective decidualization are among the commonly proposed theories of PE pathogenesis. Recently researchers have focused their attention on the events that occur at the maternal fetal interface as potential contributors to PE pathogenesis. Decidual stromal cells (DSC) isolated from preeclamptic women show diminished ability to decidualize upon stimulation and reduced capacity to downregulate sFlt-1 levels. In this study, we sought to gain insight into the molecular mechanism(s) involved in the aberrant decidualization capacity of PE DSC. Our findings using qRT-PCR show that PE DSCs have 6-fold higher basal levels of transcription factor AP2A (TFAP2A) RNA compared to women without PE and that expression of TFAP2A increases during decidualization but only in DSCs of normotensive (NT) women. Silencing of TFAP2A using Trilencer siRNA upregulated sFLT1 expression only in NT-DSCs but suppressed the expression of decidualization markers PRL, IGFBP1 and their regulator FOXO1 in cells from both groups. Collectively, our observations suggest that TFAP2A acts as a repressor of sFLT1 and plays a necessary role in decidualization possibly through interacting with another factor that is aberrantly expressed in PE DSCs.
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Affiliation(s)
- Charisma N Manley
- Division of Maternal Fetal Medicine, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Venkataraman Deepak
- Division of Research, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Nithin Ravikumar
- Division of Research, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Alicia K Smith
- Division of Research, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Anna K Knight
- Division of Research, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Martina L Badell
- Division of Maternal Fetal Medicine, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Neil Sidell
- Division of Research, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Augustine Rajakumar
- Division of Research, Emory University School of Medicine, Atlanta, GA, United States; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, United States.
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Jhamat N, Niazi A, Guo Y, Chanrot M, Ivanova E, Kelsey G, Bongcam-Rudloff E, Andersson G, Humblot P. LPS-treatment of bovine endometrial epithelial cells causes differential DNA methylation of genes associated with inflammation and endometrial function. BMC Genomics 2020; 21:385. [PMID: 32493210 PMCID: PMC7268755 DOI: 10.1186/s12864-020-06777-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 05/10/2020] [Indexed: 12/18/2022] Open
Abstract
Background Lipopolysaccharide (LPS) endotoxin stimulates pro-inflammatory pathways and is a key player in the pathological mechanisms involved in the development of endometritis. This study aimed to investigate LPS-induced DNA methylation changes in bovine endometrial epithelial cells (bEECs), which may affect endometrial function. Following in vitro culture, bEECs from three cows were either untreated (0) or exposed to 2 and 8 μg/mL LPS for 24 h. Results DNA samples extracted at 0 h and 24 h were sequenced using reduced representation bisulfite sequencing (RRBS). When comparing DNA methylation results at 24 h to time 0 h, a larger proportion of hypomethylated regions were identified in the LPS-treated groups, whereas the trend was opposite in controls. When comparing LPS groups to controls at 24 h, a total of 1291 differentially methylated regions (DMRs) were identified (55% hypomethylated and 45% hypermethylated). Integration of DNA methylation data obtained here with our previously published gene expression data obtained from the same samples showed a negative correlation (r = − 0.41 for gene promoter, r = − 0.22 for gene body regions, p < 0.05). Differential methylation analysis revealed that effects of LPS treatment were associated with methylation changes for genes involved in regulation of immune and inflammatory responses, cell adhesion, and external stimuli. Gene ontology and pathway analyses showed that most of the differentially methylated genes (DMGs) were associated with cell proliferation and apoptotic processes; and pathways such as calcium-, oxytocin- and MAPK-signaling pathways with recognized roles in innate immunity. Several DMGs were related to systemic inflammation and tissue re-modelling including HDAC4, IRAK1, AKT1, MAP3K6, Wnt7A and ADAMTS17. Conclusions The present results show that LPS altered the DNA methylation patterns of bovine endometrial epithelial cells. This information, combined with our previously reported changes in gene expression related to endometrial function, confirm that LPS activates pro-inflammatory mechanisms leading to perturbed immune balance and cell adhesion processes in the endometrium.
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Affiliation(s)
- Naveed Jhamat
- Department of Animal Breeding and Genetics, Section of Molecular Genetics, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden.,SLU-Global Bioinformatics Centre, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden.,Department of Information Technology, University of the Punjab, Gujranwala Campus, Gujranwala, Pakistan
| | - Adnan Niazi
- Department of Animal Breeding and Genetics, Section of Molecular Genetics, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden. .,SLU-Global Bioinformatics Centre, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden.
| | - Yongzhi Guo
- Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden
| | - Metasu Chanrot
- Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden.,Faculty of Veterinary Science, Rajamangala University of Technology Srivijaya, Nakhon Si Thammarat, 802 40, Thailand
| | - Elena Ivanova
- Epigenetics Programme, The Babraham Institute, Cambridge, UK
| | - Gavin Kelsey
- Epigenetics Programme, The Babraham Institute, Cambridge, UK.,Centre for Trophoblast Research, University of Cambridge, Cambridge, UK
| | - Erik Bongcam-Rudloff
- Department of Animal Breeding and Genetics, Section of Molecular Genetics, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden.,SLU-Global Bioinformatics Centre, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden
| | - Göran Andersson
- Department of Animal Breeding and Genetics, Section of Molecular Genetics, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden.,Centre for Reproductive Biology in Uppsala, CRU, P.O. Box 7054, 750 07, Uppsala, Sweden
| | - Patrice Humblot
- Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden
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10
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The Role of LIN28- let-7-ARID3B Pathway in Placental Development. Int J Mol Sci 2020; 21:ijms21103637. [PMID: 32455665 PMCID: PMC7279312 DOI: 10.3390/ijms21103637] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022] Open
Abstract
Placental disorders are a major cause of pregnancy loss in humans, and 40–60% of embryos are lost between fertilization and birth. Successful embryo implantation and placental development requires rapid proliferation, invasion, and migration of trophoblast cells. In recent years, microRNAs (miRNAs) have emerged as key regulators of molecular pathways involved in trophoblast function. A miRNA binds its target mRNA in the 3ʹ-untranslated region (3ʹ-UTR), causing its degradation or translational repression. Lethal-7 (let-7) miRNAs induce cell differentiation and reduce cell proliferation by targeting proliferation-associated genes. The oncoprotein LIN28 represses the biogenesis of mature let-7 miRNAs. Proliferating cells have high LIN28 and low let-7 miRNAs, whereas differentiating cells have low LIN28 and high let-7 miRNAs. In placenta, low LIN28 and high let-7 miRNAs can lead to reduced proliferation of trophoblast cells, resulting in abnormal placental development. In trophoblast cells, let-7 miRNAs reduce the expression of proliferation factors either directly by binding their mRNA in 3ʹ-UTR or indirectly by targeting the AT-rich interaction domain (ARID)3B complex, a transcription-activating complex comprised of ARID3A, ARID3B, and histone demethylase 4C (KDM4C). In this review, we discuss regulation of trophoblast function by miRNAs, focusing on the role of LIN28-let-7-ARID3B pathway in placental development.
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Wang X, Peng S, Cui K, Hou F, Ding J, Li A, Wang M, Geng L. MicroRNA-576-5p enhances the invasion ability of trophoblast cells in preeclampsia by targeting TFAP2A. Mol Genet Genomic Med 2019; 8:e1025. [PMID: 31701656 PMCID: PMC6978227 DOI: 10.1002/mgg3.1025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/18/2019] [Accepted: 10/11/2019] [Indexed: 12/22/2022] Open
Abstract
Background Preeclampsia (PE) is a common pregnancy‐related syndrome characterized by hypertension and proteinuria, and a major cause of maternal mortality. Therefore, there is an urgent need to identify early biomarkers of PE. The aim of the present study was to identify the functions of miR‐576‐5p in PE. Methods Effects of miR‐576‐5p and transcription factor AP‐2α (TFAP2A) on invasion of human trophoblast HTR8/SVneo cells were investigated. Real‐time quantitative polymerase chain reaction (RT‐qPCR) and western blotting were used to assess the expression of miR‐576‐5p, TFAP2A, E‐cad, and Vimentin in PE tissues and cells. Additionally, immunofluorescence was used to detect the expression of TFAP2A in PE trophoblastic tissue. Subsequently, constructed miR‐576‐5p mimics, miR‐576‐5p inhibitor, and siRNA‐TFAP2A plasmids were transfected into HTR8/SVneo cells for further experiments, including a CCK‐8 assay for cell proliferation, Transwell assay for cell invasion and the luciferase reporter gene system was employed for target verification. Results A lower expression of miR‐576‐5p and a higher expression of TFAP2A were identified in PE rats. E‐cadherin was highly expressed while Vimentin was downregulated. Further statistical analysis indicated that cell proliferation of HTR8/SVneo cells decreased in the miR‐576‐5p inhibitor group and increased in the miR‐576‐5p mimics and siRNA‐TFAP2A groups. miR‐576‐5p inhibitor suppressed cell invasion, and miR‐576‐5p mimics and siRNA‐TFAP2A improved cell invasion. The analysis of luciferase reporter demonstrated a decreased luciferase activity in miR‐576‐5p mimics group compared with control group, which indicates that TFAP2A may be a target of miR‐576‐5p. Interference of TFAP2A could downregulate E‐cadherin and upregulate Vimentin expression. Conclusion Overexpression of miR‐576‐5p and knockdown of TFAP2A may elevate cell proliferation and invasion of human trophoblast cells in vitro. Therefore, miR‐576‐5p may be used as a notable biomarker for the diagnosis, prevention, and treatment of PE. miR‐576‐5p targeting TFAP2A deserve further investigation in order to explore their potential role in PE.
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Affiliation(s)
- Xiaoning Wang
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Shiyuan Peng
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Kun Cui
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Fangjuan Hou
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Jie Ding
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Ali Li
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Mingxia Wang
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
| | - Li Geng
- Department of Medical, The 987 Hospital of the PLA Joint Logistics Support Force, Baoji, Shannxi, China
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