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Barbaric M, Vukojevic K, Kolobaric A, Orlovic Vlaho M, Kresic T, Soljic V. Expression of IMP3 and LIN28A RNA-Binding Proteins in Placentas of Patients with Pre-Eclampsia with and without Severe Features. Biomedicines 2024; 12:879. [PMID: 38672233 PMCID: PMC11048248 DOI: 10.3390/biomedicines12040879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND this study aimed to determine the expression of RNA-binding oncofetal proteins IMP3 and LIN28A in extravillous (EVT) and villous trophoblast (VT) cells of placentas from pre-eclamptic (PE) pregnancies to better understand the pathogenesis of PE. METHODS placental tissue of 10 patients with PE with severe features, 10 patients with PE without severe features and 20 age-matched healthy pregnancy controls were analyzed by immunohistochemistry, double immunofluorescence and qPCR. RESULTS We found a decreased percentage of IMP3-positive EVT cells in PE with and without severe features compared to that of the healthy control (p < 0.001). IMP3 expression was significantly low in VT of PE placentas compared to that of the healthy control (p = 0.002). There was no significant difference in LIN28A expression between groups of PE and the control group. Additionally, we noticed the trend toward downregulation of IMP3 mRNA and LIN28A mRNA in severe PE compared to that of healthy controls. CONCLUSIONS We demonstrated that IMP3 expression is decreased in EVT and VT cells of placentas from pregnancies complicated with both PE with and without severe features. However, additional functional investigations are needed to clarify the role of IMP3 as a potential therapeutic target in the management of PE.
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Affiliation(s)
- Maja Barbaric
- Laboratory of Morphology, Department of Histology and Embryology, School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina; (A.K.); (V.S.)
| | - Katarina Vukojevic
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, 21000 Split, Croatia;
| | - Anita Kolobaric
- Laboratory of Morphology, Department of Histology and Embryology, School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina; (A.K.); (V.S.)
| | - Martina Orlovic Vlaho
- Department of Obstetrics, Gynecology University Clinical Hospital Mostar, 88000 Mostar, Bosnia and Herzegovina; (M.O.V.); (T.K.)
- Faculty of Health Studies, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
| | - Tanja Kresic
- Department of Obstetrics, Gynecology University Clinical Hospital Mostar, 88000 Mostar, Bosnia and Herzegovina; (M.O.V.); (T.K.)
| | - Violeta Soljic
- Laboratory of Morphology, Department of Histology and Embryology, School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina; (A.K.); (V.S.)
- Faculty of Health Studies, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
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LIN28 Family in Testis: Control of Cell Renewal, Maturation, Fertility and Aging. Int J Mol Sci 2022; 23:ijms23137245. [PMID: 35806250 PMCID: PMC9266904 DOI: 10.3390/ijms23137245] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/20/2022] [Accepted: 06/25/2022] [Indexed: 12/12/2022] Open
Abstract
Male reproductive development starts early in the embryogenesis with somatic and germ cell differentiation in the testis. The LIN28 family of RNA-binding proteins promoting pluripotency has two members—LIN28A and LIN28B. Their function in the testis has been investigated but many questions about their exact role based on the expression patterns remain unclear. LIN28 expression is detected in the gonocytes and the migrating, mitotically active germ cells of the fetal testis. Postnatal expression of LIN28 A and B showed differential expression, with LIN28A expressed in the undifferentiated spermatogonia and LIN28B in the elongating spermatids and Leydig cells. LIN28 interferes with many signaling pathways, leading to cell proliferation, and it is involved in important testicular physiological processes, such as cell renewal, maturation, fertility, and aging. In addition, aberrant LIN28 expression is associated with testicular cancer and testicular disorders, such as hypogonadotropic hypogonadism and Klinefelter’s syndrome. This comprehensive review encompasses current knowledge of the function of LIN28 paralogs in testis and other tissues and cells because many studies suggest LIN28AB as a promising target for developing novel therapeutic agents.
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Huang Q, Niu Y, Song L, Huang J, Wang C, Ma T. Does LIN28B gene dysregulation make women more likely to abort? REPRODUCTION AND FERTILITY 2022; 2:211-220. [PMID: 35118391 PMCID: PMC8801024 DOI: 10.1530/raf-21-0033] [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] [Received: 07/14/2021] [Accepted: 08/12/2021] [Indexed: 11/24/2022] Open
Abstract
Background LIN28B plays an important role in early embryonic development, but its role in villous trophoblast implantation and differentiation remains unknown. This study aims to verify the role of LIN28B in trophoblastic villous tissue and cells from women with URSA (unexplained recurrent spontaneous abortion) and artificial termination of pregnancy (negative control, NC). Methods The LIN28B gene and its protein expression level were detected with real-time quantitative PCR, Western immunoblotting analysis, and immunocytochemistry. The gene was also overexpressed in chorionic villous cell lines (HTR-8/SVneo and BeWo) to examine its effect on trophoblast function. Results The expression of LIN28B mRNA and protein of URSA villi was lower than that in the NC group. At the cellular level, overexpression of LIN28B enhanced cellular migration, and invasion, and inhibited apoptosis. LIN28B may inhibit apoptosis by promoting Akt phosphorylation and by inhibiting Bad phosphorylation and Bcl-2 expression. In addition, LIN28B inhibited cell fusion and reduced cellular syncytia. Conclusions LIN28B can inhibit cell invasion and migration in vitro and promote apoptosis and fusion. The low expression of LIN28B in URSA villous trophoblast cells may be one of the causes of abortion. The role of LIN28B in villous trophoblasts needs further study. Lay summary Propagation of offspring is of great significance to the continuation of the human race. However, continuous pregnancy is more difficult for some women, especially women who have multiple miscarriages. One important contributor is the cessation of development caused by genetic factors of the embryo, but there are still many unknown reasons. We investigated the LIN28B gene which is a possible pathogenic factor in the placenta. We collected 25 cases of abortion in the experimental group (unexplained recurrent abortion group) and 25 in the control group (artificial termination of pregnancy group): on average at 7–8 weeks of pregnancy. We tested the function of lin28b in these samples and verified its function in cell lines. LIN28B plays an important role in maintaining early pregnancy by promoting the invasion of villous cells, inhibiting apoptosis and fusion, and the reduction of LIN28B expression may lead to the occurrence of early miscarriage.
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Affiliation(s)
- QiaoYao Huang
- Reproductive Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - YanRu Niu
- Laboratory of Minimally Invasive Orthopaedics. Guangdong Medical University, Zhanjiang, Guangdong, China
| | - LiJun Song
- Reproductive Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - JinZhi Huang
- Reproductive Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Chenxi Wang
- Reproductive Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - TianZhong Ma
- Reproductive Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
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Matsubara K, Matsubara Y, Uchikura Y, Takagi K, Yano A, Sugiyama T. HMGA1 Is a Potential Driver of Preeclampsia Pathogenesis by Interference with Extravillous Trophoblasts Invasion. Biomolecules 2021; 11:biom11060822. [PMID: 34072941 PMCID: PMC8227282 DOI: 10.3390/biom11060822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/18/2022] Open
Abstract
Preeclampsia (PE) is a serious disease that can be fatal for the mother and fetus. The two-stage theory has been proposed as its cause, with the first stage comprising poor placentation associated with the failure of fertilized egg implantation. Successful implantation and placentation require maternal immunotolerance of the fertilized egg as a semi-allograft and appropriate extravillous trophoblast (EVT) invasion of the decidua and myometrium. The disturbance of EVT invasion during implantation in PE results in impaired spiral artery remodeling. PE is thought to be caused by hypoxia during remodeling failure-derived poor placentation, which results in chronic inflammation. High-mobility group protein A (HMGA) is involved in the growth and invasion of cancer cells and likely in the growth and invasion of trophoblasts. Its mechanism of action is associated with immunotolerance. Thus, HMGA is thought to play a pivotal role in successful pregnancy, and its dysfunction may be related to the pathogenesis of PE. The evaluation of HMGA function and its changes in PE might confirm that it is a reliable biomarker of PE and provide prospects for PE treatment through the induction of EVT proliferation and invasion during the implantation.
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Affiliation(s)
- Keiichi Matsubara
- Department of Regional Pediatrics and Perinatology, Graduate School of Medicine, Ehime University, Ehime, Toon-shi 791-0295, Shitsukawa, Japan
- Correspondence:
| | - Yuko Matsubara
- Department of Obstetrics and Gynecology, School of Medicine, Ehime University, Ehime, Toon-shi 791-0295, Shitsukawa, Japan; (Y.M.); (Y.U.); (K.T.); (A.Y.); (T.S.)
| | - Yuka Uchikura
- Department of Obstetrics and Gynecology, School of Medicine, Ehime University, Ehime, Toon-shi 791-0295, Shitsukawa, Japan; (Y.M.); (Y.U.); (K.T.); (A.Y.); (T.S.)
| | - Katsuko Takagi
- Department of Obstetrics and Gynecology, School of Medicine, Ehime University, Ehime, Toon-shi 791-0295, Shitsukawa, Japan; (Y.M.); (Y.U.); (K.T.); (A.Y.); (T.S.)
| | - Akiko Yano
- Department of Obstetrics and Gynecology, School of Medicine, Ehime University, Ehime, Toon-shi 791-0295, Shitsukawa, Japan; (Y.M.); (Y.U.); (K.T.); (A.Y.); (T.S.)
| | - Takashi Sugiyama
- Department of Obstetrics and Gynecology, School of Medicine, Ehime University, Ehime, Toon-shi 791-0295, Shitsukawa, Japan; (Y.M.); (Y.U.); (K.T.); (A.Y.); (T.S.)
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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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Trophectoderm-Specific Knockdown of LIN28 Decreases Expression of Genes Necessary for Cell Proliferation and Reduces Elongation of Sheep Conceptus. Int J Mol Sci 2020; 21:ijms21072549. [PMID: 32268593 PMCID: PMC7177537 DOI: 10.3390/ijms21072549] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 02/07/2023] Open
Abstract
LIN28 inhibits let-7 miRNA maturation which prevents cell differentiation and promotes proliferation. We hypothesized that the LIN28-let-7 axis regulates proliferation-associated genes in sheep trophectoderm in vivo. Day 9-hatched sheep blastocysts were incubated with lentiviral particles to deliver shRNA targeting LIN28 specifically to trophectoderm cells. At day 16, conceptus elongation was significantly reduced in LIN28A and LIN28B knockdowns. Let-7 miRNAs were significantly increased and IGF2BP1-3, HMGA1, ARID3B, and c-MYC were decreased in trophectoderm from knockdown conceptuses. Ovine trophoblast (OTR) cells derived from day 16 trophectoderm are a useful tool for in vitro experiments. Surprisingly, LIN28 was significantly reduced and let-7 miRNAs increased after only a few passages of OTR cells, suggesting these passaged cells represent a more differentiated phenotype. To create an OTR cell line more similar to day 16 trophectoderm we overexpressed LIN28A and LIN28B, which significantly decreased let-7 miRNAs and increased IGF2BP1-3, HMGA1, ARID3B, and c-MYC compared to control. This is the first study showing the role of the LIN28-let-7 axis in trophoblast proliferation and conceptus elongation in vivo. These results suggest that reduced LIN28 during early placental development can lead to reduced trophoblast proliferation and sheep conceptus elongation at a critical period for successful establishment of pregnancy.
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4D Genome Rewiring during Oncogene-Induced and Replicative Senescence. Mol Cell 2020; 78:522-538.e9. [PMID: 32220303 PMCID: PMC7208559 DOI: 10.1016/j.molcel.2020.03.007] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 12/20/2019] [Accepted: 03/04/2020] [Indexed: 12/26/2022]
Abstract
To understand the role of the extensive senescence-associated 3D genome reorganization, we generated genome-wide chromatin interaction maps, epigenome, replication-timing, whole-genome bisulfite sequencing, and gene expression profiles from cells entering replicative senescence (RS) or upon oncogene-induced senescence (OIS). We identify senescence-associated heterochromatin domains (SAHDs). Differential intra- versus inter-SAHD interactions lead to the formation of senescence-associated heterochromatin foci (SAHFs) in OIS but not in RS. This OIS-specific configuration brings active genes located in genomic regions adjacent to SAHDs in close spatial proximity and favors their expression. We also identify DNMT1 as a factor that induces SAHFs by promoting HMGA2 expression. Upon DNMT1 depletion, OIS cells transition to a 3D genome conformation akin to that of cells in replicative senescence. These data show how multi-omics and imaging can identify critical features of RS and OIS and discover determinants of acute senescence and SAHF formation. Deep multi-omics characterization of replicative and oncogene-induced senescence Senescence-associated heterochromatin domains (SAHDs) form SAHFs via 3D changes DNMT1 is required for SAHF formation via regulation of HMGA2 expression SAHF formation leads to expression of SAHF-adjacent genes via 3D chromatin contacts
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Hoch D, Bachbauer M, Pöchlauer C, Algaba-Chueca F, Tandl V, Novakovic B, Megia A, Gauster M, Saffery R, Glasner A, Desoye G, Majali-Martinez A. Maternal Obesity Alters Placental Cell Cycle Regulators in the First Trimester of Human Pregnancy: New Insights for BRCA1. Int J Mol Sci 2020; 21:E468. [PMID: 31940810 PMCID: PMC7014057 DOI: 10.3390/ijms21020468] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/03/2020] [Accepted: 01/09/2020] [Indexed: 12/13/2022] Open
Abstract
In the first trimester of pregnancy, placental development involves a wide range of cellular processes. These include trophoblast proliferation, fusion, and differentiation, which are dependent on tight cell cycle control. The intrauterine environment affects placental development, which also includes the trophoblast cell cycle. In this work, we focus on maternal obesity to assess whether an altered intrauterine milieu modulates expression and protein levels of placental cell cycle regulators in early human pregnancy. For this purpose, we use first trimester placental tissue from lean and obese women (gestational week 5+0-11+6, n = 58). Using a PCR panel, a cell cycle protein array, and STRING database analysis, we identify a network of cell cycle regulators increased by maternal obesity in which breast cancer 1 (BRCA1) is a central player. Immunostaining localizes BRCA1 predominantly to the villous and the extravillous cytotrophoblast. Obesity-driven BRCA1 upregulation is not able to be explained by DNA methylation (EPIC array) or by short-term treatment of chorionic villous explants at 2.5% oxygen with tumor necrosis factor α (TNF-α) (50 mg/mL), leptin (100 mg/mL), interleukin 6 (IL-6) (100 mg/mL), or high glucose (25 nM). Oxygen tension rises during the first trimester, but this change in vitro has no effect on BRCA1 (2.5% and 6.5% O2). We conclude that maternal obesity affects placental cell cycle regulation and speculate this may alter placental development.
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Affiliation(s)
- Denise Hoch
- Department of Obstetrics and Gynecology, Medical University of Graz, 8036 Graz, Austria; (D.H.); (M.B.); (C.P.); (V.T.); (A.M.-M.)
| | - Martina Bachbauer
- Department of Obstetrics and Gynecology, Medical University of Graz, 8036 Graz, Austria; (D.H.); (M.B.); (C.P.); (V.T.); (A.M.-M.)
| | - Caroline Pöchlauer
- Department of Obstetrics and Gynecology, Medical University of Graz, 8036 Graz, Austria; (D.H.); (M.B.); (C.P.); (V.T.); (A.M.-M.)
| | - Francisco Algaba-Chueca
- Department of Endocrinology and Nutrition Research Unit, University Hospital of Tarragona Joan XXIII-Institut d´Investigació Sanitària Pere Virgili (IISPV), 43005 Tarragona, Spain; (F.A.-C.); (A.M.)
| | - Veronika Tandl
- Department of Obstetrics and Gynecology, Medical University of Graz, 8036 Graz, Austria; (D.H.); (M.B.); (C.P.); (V.T.); (A.M.-M.)
| | - Boris Novakovic
- Murdoch Children’s Research Institute, Royal Children’s Hospital, 3052 Melbourne, Australia; (B.N.); (R.S.)
| | - Ana Megia
- Department of Endocrinology and Nutrition Research Unit, University Hospital of Tarragona Joan XXIII-Institut d´Investigació Sanitària Pere Virgili (IISPV), 43005 Tarragona, Spain; (F.A.-C.); (A.M.)
| | - Martin Gauster
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Centre for Cell Signaling, Metabolism and Ageing, Medical University of Graz, 8036 Graz, Austria;
| | - Richard Saffery
- Murdoch Children’s Research Institute, Royal Children’s Hospital, 3052 Melbourne, Australia; (B.N.); (R.S.)
| | | | - Gernot Desoye
- Department of Obstetrics and Gynecology, Medical University of Graz, 8036 Graz, Austria; (D.H.); (M.B.); (C.P.); (V.T.); (A.M.-M.)
| | - Alejandro Majali-Martinez
- Department of Obstetrics and Gynecology, Medical University of Graz, 8036 Graz, Austria; (D.H.); (M.B.); (C.P.); (V.T.); (A.M.-M.)
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Li L, Zhuo Z, Yang Z, Zhu J, He X, Yang Z, Zhang J, Xin Y, He J, Zhang T. HMGA2 Polymorphisms and Hepatoblastoma Susceptibility: A Five-Center Case-Control Study. Pharmgenomics Pers Med 2020; 13:51-57. [PMID: 32104047 PMCID: PMC7023882 DOI: 10.2147/pgpm.s241100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 02/04/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Hepatoblastoma is a rare disease. Its etiology remains obscure. No epidemiological reports have assessed the relationship of High Mobility Group A2 (HMGA2) single nucleotide polymorphisms (SNPs) with hepatoblastoma risk. This case-control study leads as a pioneer to explore whether HMGA2 SNPs (rs6581658 A>G, rs8756 A>C, rs968697 T>C) could impact hepatoblastoma risk. METHODS We acquired samples from 275 hepatoblastoma cases and 1018 controls who visited one of five independent hospitals located in the different regions of China. The genotyping of HMGA2 SNPs was implemented using the PCR-based TaqMan method, and the risk estimates were quantified by odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS In the main analysis, we identified that rs968697 T>C polymorphism was significantly related to hepatoblastoma risk in the additive model (adjusted OR=0.73, 95% CI=0.54-0.98, P=0.035). Notably, participants carrying 2-3 favorable genotypes had reduced hepatoblastoma risk (adjusted OR=0.71, 95% CI=0.52-0.96, P=0.028) in contrast to those carrying 0-1 favorable genotypes. Furthermore, stratification analysis revealed a significant correlation between rs968697 TC/CC and hepatoblastoma risk for males and clinical stage I+II. The existence of 2-3 protective genotypes was correlated with decreased hepatoblastoma susceptibility in children ≥17 months old, males, and clinical stage I+II cases, when compared to 0-1 protective genotype. CONCLUSION To summarize, these results indicated that the HMGA2 gene SNPs exert a weak influence on hepatoblastoma susceptibility. Further validation of the current conclusion with a larger sample size covering multi-ethnic groups is warranted.
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Affiliation(s)
- Li Li
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
| | - Zhenjian Zhuo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou510623, Guangdong, People’s Republic of China
| | - Zhen Yang
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
- Department of Oncology, Kunming Children’s Hospital, Kunming650228, Yunnan, People’s Republic of China
| | - Jinhong Zhu
- Department of Clinical Laboratory, Biobank, Harbin Medical University Cancer Hospital, Harbin150040, Heilongjiang, People’s Republic of China
| | - Xiaoli He
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
| | - Zhonghua Yang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang110004, Liaoning, People’s Republic of China
| | - Jiao Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou450052, Henan, People’s Republic of China
| | - Yijuan Xin
- Clinical Laboratory Medicine Center of PLA, Xijing Hospital, Air Force Medical University, Xi’an710032, Shaanxi, People’s Republic of China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou510623, Guangdong, People’s Republic of China
- Jing He Department of Pediatric, Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, 9 Jinsui Road, Guangzhou510623, Guangdong, People’s Republic of ChinaTel/Fax +86 2038076560 Email
| | - Tiesong Zhang
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
- Correspondence: Tiesong Zhang Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, 288 Qianxing Road, Kunming650228, Yunnan, People’s Republic of ChinaTel/Fax +86 –8713169969 Email
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Ali A, Anthony RV, Bouma GJ, Winger QA. LIN28- let-7 axis regulates genes in immortalized human trophoblast cells by targeting the ARID3B-complex. FASEB J 2019; 33:12348-12363. [PMID: 31415216 DOI: 10.1096/fj.201900718rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Abnormal placental development is one of the main etiological factors for intrauterine growth restriction (IUGR). Here, we show that LIN28A and LIN28B are significantly lower and lethal-7 (let-7) microRNAs (miRNAs) significantly higher in term human IUGR vs. normal placentas. We hypothesize that let-7 miRNAs regulate genes with known importance for human placental development [high-mobility group AT-hook 1 (HMGA1), transcriptional regulator Myc-like (c-myc), vascular endothelial growth factor A (VEGF-A), and Wnt family member 1 (WNT1)] by targeting the AT-rich interacting domain (ARID)-3B complex. ACH-3P cells with LIN28A and LIN28B knockout (DKOs) significantly increased let-7 miRNAs, leading to significantly decreased ARID3A, ARID3B, and lysine demethylase 4C (KDM4C). Similarly, Sw.71 cells overexpressing LIN28A and LIN28B (DKIs) significantly decreased let-7 miRNAs, leading to significantly increased ARID3A, ARID3B, and KDM4C. In ACH-3P cells, ARID3A, ARID3B, and KDM4C make a triprotein complex [triprotein complex comprising ARID3A, ARID3B, and KDM4C (ARID3B-complex)] that binds the promoter regions of HMGA1, c-MYC, VEGF-A, and WNT1. ARID3B knockout in ACH-3P cells disrupted the ARID3B-complex, leading to a significant decrease in HMGA1, c-MYC, VEGF-A, and WNT1. DKOs had a significant reduction, whereas DKIs had a significant increase in HMGA1, c-MYC, VEGF-A, and WNT1, potentially due to regulation by the ARID3B-complex. This is the first study showing regulation of let-7 targets in immortalized human trophoblast cells by the ARID3B-complex.-Ali, A., Anthony, R. V., Bouma, G. J., Winger, Q. A. LIN28-let-7 axis regulates genes in immortalized human trophoblast cells by targeting the ARID3B-complex.
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Affiliation(s)
- Asghar Ali
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Russell V Anthony
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Gerrit J Bouma
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Quinton A Winger
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
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West RC, Russ JE, Bouma GJ, Winger QA. BRCA1 regulates HMGA2 levels in the Swan71 trophoblast cell line. Mol Reprod Dev 2019; 86:1663-1670. [PMID: 31410930 DOI: 10.1002/mrd.23255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 07/20/2019] [Indexed: 11/09/2022]
Abstract
During early placental development, tumor suppressors and oncogenes work synergistically to regulate cell proliferation and differentiation in a restrained manner compared with the uncontrollable growth in cancer. One example of this partnership is the regulation of the oncofetal protein HMGA2 by BRCA1. BRCA1 forms a repressor complex with ZNF350 and CtIP to bind to the promoter of HMGA2, preventing transcription. Chromatin immunoprecipitation determined BRCA1 forms this repressor complex in human trophoblast cells, suggesting a role in the placenta. Furthermore, miR-182 has been shown to target BRCA1 mRNA in ovarian cancer cells, blocking the formation of the BRCA1 repressor complex and allowing increased transcription of HMGA2. miR-182 was one of the first miRNAs described as elevated in the serum and placentas of preeclamptic women. Therefore, we hypothesized that BRCA1 is essential for normal trophoblast cell development. We used CRISPR-Cas9 genome editing and miR-182 overexpression to decrease BRCA1 protein in the Swan71 cell line. HMGA2 was significantly increased in the BRCA1 KO and miR-182 overexpressing cells compared to controls. We also determined that BRCA1 repressor complex binding to HMGA2 was significantly reduced in BRCA1 KO and miR-182 overexpressing cells compared with controls, leading us to conclude that increased HMGA2 was because of decreased binding of the BRCA1 repressor complex. Finally, we found that the caspase activity was significantly higher in BRCA1 KO and miR-182 overexpressing cells suggesting an increased amount of apoptosis. These data suggest that BRCA1 is an important regulator of the oncofetal protein HMGA2 and promotes cell survival in human placental cells.
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Affiliation(s)
- Rachel C West
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado
| | - Jennifer E Russ
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado
| | - Gerrit J Bouma
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado
| | - Quinton A Winger
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado
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McWhorter ES, West RC, Russ JE, Ali A, Winger QA, Bouma GJ. LIN28B regulates androgen receptor in human trophoblast cells through Let-7c. Mol Reprod Dev 2019; 86:1086-1093. [PMID: 31215730 DOI: 10.1002/mrd.23226] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 04/24/2019] [Accepted: 05/23/2019] [Indexed: 12/11/2022]
Abstract
LIN28B is an RNA-binding protein necessary for maintaining pluripotency in stem cells and plays an important role in trophoblast cell differentiation. LIN28B action on target gene function often involves the Let-7 miRNA family. Previous work in cancer cells revealed that LIN28 through Let-7 miRNA regulates expression of androgen receptor (AR). Considering the similarities between cancer and trophoblast cells, we hypothesize that LIN28B also is necessary for the presence of AR in human trophoblast cells. The human first-trimester trophoblast cell line, ACH-3P was used to evaluate the regulation of AR by LIN28B, and a LIN28B knockdown cell line was constructed using lentiviral-based vectors. LIN28B knockdown in ACH-3P cells resulted in significantly decreased levels of AR and increased levels of Let-7 miRNAs. Moreover, treatment of ACH-3P cells with Let-7c mimic, but not Let-7e or Let-7f, resulted in a significant reduction in LIN28B and AR. Finally, forskolin-induced syncytialization and Let-7c treatment both resulted in increased expression of syncytiotrophoblast marker ERVW-1 and a significant decrease in AR in ACH-3P. These data reveal that LIN28B regulates AR levels in trophoblast cells likely through its inhibitory actions on let-7c, which may be necessary for trophoblast cell differentiation into the syncytiotrophoblast.
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Affiliation(s)
- Erin S McWhorter
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Rachel C West
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Jennifer E Russ
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Asghar Ali
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Quinton A Winger
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Gerrit J Bouma
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
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West RC, Bouma GJ, Winger QA. Shifting perspectives from "oncogenic" to oncofetal proteins; how these factors drive placental development. Reprod Biol Endocrinol 2018; 16:101. [PMID: 30340501 PMCID: PMC6195737 DOI: 10.1186/s12958-018-0421-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/09/2018] [Indexed: 12/23/2022] Open
Abstract
Early human placental development strongly resembles carcinogenesis in otherwise healthy tissues. The progenitor cells of the placenta, the cytotrophoblast, rapidly proliferate to produce a sufficient number of cells to form an organ that will contribute to fetal development as early as the first trimester. The cytotrophoblast cells begin to differentiate, some towards the fused cells of the syncytiotrophoblast and some towards the highly invasive and migratory extravillous trophoblast. Invasion and migration of extravillous trophoblast cells mimics tumor metastasis. One key difference between cancer progression and placental development is the tight regulation of these oncogenes and oncogenic processes. Often, tumor suppressors and oncogenes work synergistically to regulate cell proliferation, differentiation, and invasion in a restrained manner compared to the uncontrollable growth in cancer. This review will compare and contrast the mechanisms that drive both cancer progression and placental development. Specifically, this review will focus on the molecular mechanisms that promote cell proliferation, evasion of apoptosis, cell invasion, and angiogenesis.
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Affiliation(s)
- Rachel C. West
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, 10290 Ridgegate Circle, Lone Tree, Fort Collins, CO 80124 USA
| | - Gerrit J. Bouma
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, 10290 Ridgegate Circle, Lone Tree, Fort Collins, CO 80124 USA
| | - Quinton A. Winger
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, 10290 Ridgegate Circle, Lone Tree, Fort Collins, CO 80124 USA
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