1
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Baxter RC. Signaling Pathways of the Insulin-like Growth Factor Binding Proteins. Endocr Rev 2023; 44:753-778. [PMID: 36974712 PMCID: PMC10502586 DOI: 10.1210/endrev/bnad008] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 01/25/2023] [Accepted: 03/15/2023] [Indexed: 03/29/2023]
Abstract
The 6 high-affinity insulin-like growth factor binding proteins (IGFBPs) are multifunctional proteins that modulate cell signaling through multiple pathways. Their canonical function at the cellular level is to impede access of insulin-like growth factor (IGF)-1 and IGF-2 to their principal receptor IGF1R, but IGFBPs can also inhibit, or sometimes enhance, IGF1R signaling either through their own post-translational modifications, such as phosphorylation or limited proteolysis, or by their interactions with other regulatory proteins. Beyond the regulation of IGF1R activity, IGFBPs have been shown to modulate cell survival, migration, metabolism, and other functions through mechanisms that do not appear to involve the IGF-IGF1R system. This is achieved by interacting directly or functionally with integrins, transforming growth factor β family receptors, and other cell-surface proteins as well as intracellular ligands that are intermediates in a wide range of pathways. Within the nucleus, IGFBPs can regulate the diverse range of functions of class II nuclear hormone receptors and have roles in both cell senescence and DNA damage repair by the nonhomologous end-joining pathway, thus potentially modifying the efficacy of certain cancer therapeutics. They also modulate some immune functions and may have a role in autoimmune conditions such as rheumatoid arthritis. IGFBPs have been proposed as attractive therapeutic targets, but their ubiquity in the circulation and at the cellular level raises many challenges. By understanding the diversity of regulatory pathways with which IGFBPs interact, there may still be therapeutic opportunities based on modulation of IGFBP-dependent signaling.
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Affiliation(s)
- Robert C Baxter
- Kolling Institute of Medical Research, University of Sydney, Royal North Shore Hospital,St Leonards, NSW 2065, Australia
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2
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Afzal J, Du W, Novin A, Liu Y, Wali K, Murthy A, Garen A, Wagner G. Paracrine HB-EGF signaling reduce enhanced contractile and energetic state of activated decidual fibroblasts by rebalancing SRF-MRTF-TCF transcriptional axis. Front Cell Dev Biol 2022; 10:927631. [PMID: 36147738 PMCID: PMC9485834 DOI: 10.3389/fcell.2022.927631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 08/09/2022] [Indexed: 11/26/2022] Open
Abstract
Multiple parallels exist between placentation and cancer dissemination at molecular, cellular, and anatomical levels, presenting placentation as a unique model to mechanistically understand the onset of cancer metastasis. In humans, interaction of placenta and the endometrium results eventually in deep invasion of placental extravillous trophoblasts (EVTs) into the maternal stroma, a process similar to stromal trespass by disseminating carcinoma cells. In anticipation of implantation, endometrial fibroblasts (ESFs) undergo a process called decidualization during the secretory phase of the menstrual cycle. Decidualization, among other substantial changes associated with ESF differentiation, also involves a component of fibroblast activation, and myofibroblast transformation. Here, using traction force microscopy, we show that increased cellular contractility in decidualized ESFs is reversed after interaction with EVTs. We also report here the large changes in energetic state of ESFs upon decidualization, showing increased oxidative phosphorylation, mitochondrial competency and ATP generation, as well as enhanced aerobic glycolysis, presenting mechanical contractility and energetic state as new functional hallmarks for decidualization. These energetic changes accompanying the marked increase in contractile force generation in decidualization were reduced in the presence of EVTs. We also show that increase in decidual contractility and mechanical resistance to invasion is achieved by SRF-MRTF transcriptional activation, achieved via increased phosphorylation of fibroblast-specific myosin light chain 9 (MYL9). EVT induced paracrine secretion of Heparin Binding Epidermal Growth Factor (HBEGF), a potent MAPK activator, which shifts the balance of SRF association away from MRTF based transcription, reducing decidual ESF contractility and mechanical resistance to placental invasion. Our results identify a new axis of intercellular communication in the placental bed modulating stromal force generation and resistance to invasion with concurrent downregulation of cellular energetics. These findings have important implications for implantation related disorders, as well as stromal control of cancer dissemination.
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Affiliation(s)
- Junaid Afzal
- Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, CA, United States
- *Correspondence: Junaid Afzal, ; Kshitiz,
| | - Wenqiang Du
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States
| | - Ashkan Novin
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States
| | - Yamin Liu
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States
| | - Khadija Wali
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States
| | - Anarghya Murthy
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States
| | - Ashley Garen
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States
| | - Gunter Wagner
- Department of Ecology and Evolution, Yale University West Campus, West Haven, CT, United States
- Systems Biology Institute, Yale University, West Haven, CT, United States
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3
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Noncoding RNA actions through IGFs and IGF binding proteins in cancer. Oncogene 2022; 41:3385-3393. [PMID: 35597813 PMCID: PMC9203274 DOI: 10.1038/s41388-022-02353-3] [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: 03/29/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 12/17/2022]
Abstract
The insulin-like growth factors (IGFs) and their regulatory proteins—IGF receptors and binding proteins—are strongly implicated in cancer progression and modulate cell survival and proliferation, migration, angiogenesis and metastasis. By regulating the bioavailability of the type-1 IGF receptor (IGF1R) ligands, IGF-1 and IGF-2, the IGF binding proteins (IGFBP-1 to -6) play essential roles in cancer progression. IGFBPs also influence cell communications through pathways that are independent of IGF1R activation. Noncoding RNAs (ncRNAs), which encompass a variety of RNA types including microRNAs (miRNAs) and long-noncoding RNAs (lncRNAs), have roles in multiple oncogenic pathways, but their many points of intersection with IGF axis functions remain to be fully explored. This review examines the functional interactions of miRNAs and lncRNAs with IGFs and their binding proteins in cancer, and reveals how the IGF axis may mediate ncRNA actions that promote or suppress cancer. A better understanding of the links between ncRNA and IGF pathways may suggest new avenues for prognosis and therapeutic intervention in cancer. Further, by exploring examples of intersecting ncRNA-IGF pathways in non-cancer conditions, it is proposed that new opportunities for future discovery in cancer control may be generated.
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Miranda AL, Kourdova LT, Racca AC, Cruz Del Puerto M, Rojas ML, Marques ALX, Silva ECO, Fonseca EJS, Gazzoni Y, Gruppi A, Borbely AU, Genti‐Raimondi S, Panzetta‐Dutari GM. Krüppel‐like factor 6 participates in extravillous trophoblast cell differentiation and its expression is reduced in abnormally invasive placenta. FEBS Lett 2022; 596:1700-1719. [DOI: 10.1002/1873-3468.14367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/30/2022] [Accepted: 04/22/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Andrea L. Miranda
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Lucille T. Kourdova
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Ana C. Racca
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Mariano Cruz Del Puerto
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Maria L. Rojas
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Aldilane L. X. Marques
- Cell Biology Laboratory Institute of Health and Biological Sciences Federal University of Alagoas Maceio Brazil
| | - Elaine C. O. Silva
- Optics and Nanoscopy Group Physics Institute Federal University of Alagoas Maceio Brazil
| | - Eduardo J. S. Fonseca
- Optics and Nanoscopy Group Physics Institute Federal University of Alagoas Maceio Brazil
| | - Yamila Gazzoni
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Adriana Gruppi
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Alexandre U. Borbely
- Cell Biology Laboratory Institute of Health and Biological Sciences Federal University of Alagoas Maceio Brazil
| | - Susana Genti‐Raimondi
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Graciela M. Panzetta‐Dutari
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Bioquímica Clínica Ciudad Universitaria X5000HUA Córdoba Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) Ciudad Universitaria X5000HUA Córdoba Argentina
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5
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Wang S, Chi K, Wu D, Hong Q. Insulin-Like Growth Factor Binding Proteins in Kidney Disease. Front Pharmacol 2022; 12:807119. [PMID: 35002740 PMCID: PMC8728008 DOI: 10.3389/fphar.2021.807119] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/08/2021] [Indexed: 12/16/2022] Open
Abstract
The seven members of the insulin-like growth factor (IGF) binding protein family (IGFBPs) were initially considered to be the regulatory proteins of IGFs in the blood circulation, mainly as the subsequent reserve for bidirectional regulation of IGF function during environmental changes. However, in recent years, IGFBPs has been found to have many functions independent of IGFs. The role of IGFBPs in regulating transcription, inducing cell migration and apoptosis is closely related to the occurrence and development of kidney disease. IGFBP-1, IGFBP-3, IGFBP-4 are closely associated with diabetes and diabetic nephropathy. IGFBP-3, IGFBP-4, IGFBP-5, IGFBP-6 are involved in different kidney disease such as diabetes, FSGS and CKD physiological process as apoptosis proteins, IGFBP-7 has been used in clinical practice as a biomarker for early diagnosis and prognosis of AKI. This review focuses on the differential expression and pathogenesis of IGFBPs in kidney disease.
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Affiliation(s)
- Shuqiang Wang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases, Beijing, China.,Department of Nephrology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Kun Chi
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases, Beijing, China
| | - Di Wu
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases, Beijing, China
| | - Quan Hong
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases, Beijing, China
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6
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Martín-Estal I, Castorena-Torres F. Gestational Diabetes Mellitus and Energy-Dense Diet: What Is the Role of the Insulin/IGF Axis? Front Endocrinol (Lausanne) 2022; 13:916042. [PMID: 35813659 PMCID: PMC9259869 DOI: 10.3389/fendo.2022.916042] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/24/2022] [Indexed: 01/02/2023] Open
Abstract
Gestational diabetes mellitus (GDM), is one of the most important pregnancy complications affecting approximately 15% of pregnant women. It is related to several gestational adverse outcomes in the fetus, e.g., macrosomia, shoulder dystocia, stillbirth, neonatal hypoglycemia, and respiratory distress. Women with GDM have a high risk of developing type 2 diabetes in the future. The pathogenesis of GDM is not completely understood; nevertheless, two factors could contribute to its development: β-cell dysfunction and failure in insulin secretion in response to insulin resistance induced by gestation. Both processes, together with the physiological activities of the insulin-like growth factors (IGFs), play a crucial role in glucose transport to the fetus and hence, fetal growth and development. IGFs (both IGF-1 and IGF-2) and their binding proteins (IGFBPs) regulate glucose metabolism and insulin sensitivity. Maternal nutritional status determines the health of the newborn, as it has substantial effects on fetal growth and development. Maternal obesity and an energy-dense diet can cause an increase in insulin and IGF-1 serum levels, producing metabolic disorders, such as insulin resistance, GDM, and high birth weight (> 4,000 g) due to a higher level of body fat. In this way, in GDM pregnancies there is an increase in IGF-1 and IGF-2 serum levels, and a decrease in IGFBP-1 and 4 serum levels, suggesting the crucial role of the insulin/IGF system in this gestational outcome. Here, the present review tries to elucidate the role that energy-dense diets and the insulin/IGF-1 signaling pathway perform in GDM pregnancies.
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7
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Roles of Two Small Leucine-Rich Proteoglycans Decorin and Biglycan in Pregnancy and Pregnancy-Associated Diseases. Int J Mol Sci 2021; 22:ijms221910584. [PMID: 34638928 PMCID: PMC8509074 DOI: 10.3390/ijms221910584] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 11/18/2022] Open
Abstract
Two small leucine-rich proteoglycans (SLRP), decorin and biglycan, play important roles in structural–functional integrity of the placenta and fetal membranes, and their alterations can result in several pregnancy-associated diseases. In this review, we briefly discuss normal placental structure and functions, define and classify SLRPs, and then focus on two SLRPs, decorin (DCN) and biglycan (BGN). We discuss the consequences of deletions/mutations of DCN and BGN. We then summarize DCN and BGN expression in the pregnant uterus, myometrium, decidua, placenta, and fetal membranes. Actions of these SLRPs as ligands are then discussed in the context of multiple binding partners in the extracellular matrix and cell surface (receptors), as well as their alterations in pathological pregnancies, such as preeclampsia, fetal growth restriction, and preterm premature rupture of membranes. Lastly, we raise some unanswered questions as food for thought.
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8
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Young CH, Snow B, DeVore SB, Mohandass A, Nemmara VV, Thompson PR, Thyagarajan B, Navratil AM, Cherrington BD. Progesterone stimulates histone citrullination to increase IGFBP1 expression in uterine cells. Reproduction 2021; 162:117-127. [PMID: 34034233 PMCID: PMC8284904 DOI: 10.1530/rep-21-0132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/25/2021] [Indexed: 12/31/2022]
Abstract
Peptidylarginine deiminases (PAD) enzymes were initially characterized in uteri, but since then little research has examined their function in this tissue. PADs post-translationally convert arginine residues in target proteins to citrulline and are highly expressed in ovine caruncle epithelia and ovine uterine luminal epithelial (OLE)-derived cell line. Progesterone (P4) not only maintains the uterine epithelia but also regulates the expression of endometrial genes that code for proteins that comprise the histotroph and are critical during early pregnancy. Given this, we tested whether P4 stimulates PAD-catalyzed histone citrullination to epigenetically regulate expression of the histotroph gene insulin-like growth factor binding protein 1 (IGFBP1) in OLE cells. 100 nM P4 significantly increases IGFBP1 mRNA expression; however, this increase is attenuated by pre-treating OLE cells with 100 nM progesterone receptor antagonist RU486 or 2 µM of a pan-PAD inhibitor. P4 treatment of OLE cells also stimulates citrullination of histone H3 arginine residues 2, 8, and 17 leading to enrichment of the ovine IGFBP1 gene promoter. Since PAD2 nuclear translocation and catalytic activity require calcium, we next investigated whether P4 triggers calcium influx in OLE cells. OLE cells were pre-treated with 10 nM nicardipine, an L-type calcium channel blocker, followed by stimulation with P4. Using fura2-AM imaging, we found that P4 initiates a rapid calcium influx through L-type calcium channels in OLE cells. Furthermore, this influx is necessary for PAD2 nuclear translocation and resulting citrullination of histone H3 arginine residues 2, 8, and 17. Our work suggests that P4 stimulates rapid calcium influx through L-type calcium channels initiating PAD-catalyzed histone citrullination and an increase in IGFBP1 expression.
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Affiliation(s)
- Coleman H Young
- Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, USA
| | - Bryce Snow
- Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, USA
| | - Stanley B DeVore
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | - Venkatesh V Nemmara
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, New Jersey, USA
| | - Paul R Thompson
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | | | - Amy M Navratil
- Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, USA
| | - Brian D Cherrington
- Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, USA
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9
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Lin YW, Weng XF, Huang BL, Guo HP, Xu YW, Peng YH. IGFBP-1 in cancer: expression, molecular mechanisms, and potential clinical implications. Am J Transl Res 2021; 13:813-832. [PMID: 33841624 PMCID: PMC8014352 DOI: pmid/33841624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 12/09/2020] [Indexed: 02/05/2023]
Abstract
Insulin-like growth factor binding protein-1 (IGFBP-1) belongs to the insulin-like growth factor (IGF) system, which plays an indispensable role in normal growth and development, and in the pathophysiology of various tumors. IGFBP-1 has been shown to be associated with the risk of various tumors, and has a vital function in regulating tumor behaviors such as proliferation, migration, invasion and adhesion through different molecular mechanisms. The biological actions of IGFBP-1 in cancer are found to be related to its phosphorylation state, and the IGF-dependent and -independent mechanisms. In this review, we provided an overview of IGFBP-1 in normal physiology, and its aberrantly expression and the underlying molecular mechanisms in a range of common tumors, as well as discussed the potential clinical implications of IGFBP-1 as diagnostic or prognostic biomarkers in cancer.
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Affiliation(s)
- Yi-Wei Lin
- Department of Clinical Laboratory Medicine, The Cancer Hospital of Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
- Precision Medicine Research Center, Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
| | - Xue-Fen Weng
- Department of Clinical Laboratory Medicine, The Cancer Hospital of Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
- Precision Medicine Research Center, Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
| | - Bin-Liang Huang
- Department of Clinical Laboratory Medicine, The Cancer Hospital of Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
- Precision Medicine Research Center, Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
| | - Hai-Peng Guo
- Department of Head and Neck Surgery, The Cancer Hospital of Shantou University Medical CollegeShantou 515041, People’s Republic of China
| | - Yi-Wei Xu
- Department of Clinical Laboratory Medicine, The Cancer Hospital of Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
- Precision Medicine Research Center, Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
| | - Yu-Hui Peng
- Department of Clinical Laboratory Medicine, The Cancer Hospital of Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
- Precision Medicine Research Center, Shantou University Medical CollegeShantou, Guangdong, People’s Republic of China
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Blois SM, Verlohren S, Wu G, Clark G, Dell A, Haslam SM, Barrientos G. Role of galectin-glycan circuits in reproduction: from healthy pregnancy to preterm birth (PTB). Semin Immunopathol 2020; 42:469-486. [PMID: 32601855 PMCID: PMC7508936 DOI: 10.1007/s00281-020-00801-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/20/2020] [Indexed: 02/08/2023]
Abstract
Growing evidence suggests that galectins, an evolutionarily conserved family of glycan-binding proteins, fulfill key roles in pregnancy including blastocyst implantation, maternal-fetal immune tolerance, placental development, and maternal vascular expansion, thereby establishing a healthy environment for the growing fetus. In this review, we comprehensively present the function of galectins in shaping cellular circuits that characterize a healthy pregnancy. We describe the current understanding of galectins in term and preterm labor and discuss how the galectin-glycan circuits contribute to key immunological pathways sustaining maternal tolerance and preventing microbial infections. A deeper understanding of the glycoimmune pathways regulating early events in preterm birth could offer the broader translational potential for the treatment of this devastating syndrome.
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Affiliation(s)
- Sandra M Blois
- Experimental and Clinical Research Center, A Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and the Charité-Universitätsmedizin Berlin, AG GlycoImmunology, Berlin, Germany. .,Institute for Medical Immunology, Charité-Universitätsmedizin Berlin, Berlin, Germany. .,Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Stefan Verlohren
- Department of Obstetrics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Gang Wu
- Department of Life Sciences, Imperial College London, London, UK
| | - Gary Clark
- Department of Obstetrics, Gynaecology and Women's Health, University of Missouri, Columbia, Missouri, USA
| | - Anne Dell
- Department of Life Sciences, Imperial College London, London, UK
| | - Stuart M Haslam
- Department of Life Sciences, Imperial College London, London, UK
| | - Gabriela Barrientos
- Laboratory of Experimental Medicine, Hospital Alemán, School of Medicine, University of Buenos Aires, CONICET, Buenos Aires, Argentina
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Interaction of Pregnancy-Specific Glycoprotein 1 With Integrin Α5β1 Is a Modulator of Extravillous Trophoblast Functions. Cells 2019; 8:cells8111369. [PMID: 31683744 PMCID: PMC6912793 DOI: 10.3390/cells8111369] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 10/23/2019] [Accepted: 10/25/2019] [Indexed: 01/23/2023] Open
Abstract
Human pregnancy-specific glycoproteins (PSGs) serve immunomodulatory and pro-angiogenic functions during pregnancy and are mainly expressed by syncytiotrophoblast cells. While PSG mRNA expression in extravillous trophoblasts (EVTs) was reported, the proteins were not previously detected. By immunohistochemistry and immunoblotting, we show that PSGs are expressed by invasive EVTs and co-localize with integrin 5. In addition, we determined that native and recombinant PSG1, the most highly expressed member of the family, binds to 51 and induces the formation of focal adhesion structures resulting in adhesion of primary EVTs and EVT-like cell lines under 21% oxygen and 1% oxygen conditions. Furthermore, we found that PSG1 can simultaneously bind to heparan sulfate in the extracellular matrix and to 51 on the cell membrane. Wound healing assays and single-cell movement tracking showed that immobilized PSG1 enhances EVT migration. Although PSG1 did not affect EVT invasion in the in vitro assays employed, we found that the serum PSG1 concentration is lower in African-American women diagnosed with early-onset and late-onset preeclampsia, a pregnancy pathology characterized by shallow trophoblast invasion, than in their respective healthy controls only when the fetus was a male; therefore, the reduced expression of this molecule should be considered in the context of preeclampsia as a potential therapy.
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12
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Le HT, Atif J, Mara DL, Castellana B, Treissman J, Baltayeva J, Beristain AG. ADAM8 localizes to extravillous trophoblasts within the maternal-fetal interface and potentiates trophoblast cell line migration through a β1 integrin-mediated mechanism. Mol Hum Reprod 2019; 24:495-509. [PMID: 30124911 DOI: 10.1093/molehr/gay034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 08/12/2018] [Indexed: 12/11/2022] Open
Abstract
STUDY QUESTION Does A Disintegrin And Metalloproteinase 8 (ADAM8) control extravillous trophoblast (EVT) differentiation and migration in early human placental development? SUMMARY ANSWER ADAM8 mRNA preferentially localizes to invasive HLA-G-positive trophoblasts, associates with the acquirement of an EVT phenotype and promotes trophoblast migration through a mechanism requiring β1-integrin. WHAT IS KNOWN ALREADY Placental establishment in the first trimester of pregnancy requires the differentiation of progenitor trophoblasts into invasive EVTs that produce a diverse repertoire of proteases that facilitate matrix remodeling and activation of signaling pathways important in controlling cell migration. While multiple ADAM proteases, including ADAM8, are highly expressed by invasive trophoblasts, the role of ADAM8 in controlling EVT-related processes is unknown. STUDY DESIGN, SIZE, DURATION First trimester placental villi and decidua (6-12 weeks' gestation), primary trophoblasts and trophoblastic cell lines (JEG3, JAR, Bewo, HTR8/SVNeo) were used to examine ADAM8 expression, localization and function. All experiments were performed on at least three independent occasions (n = 3). PARTICIPANTS/MATERIALS, SETTING, METHODS Placental villi and primary trophoblasts derived from IRB approved first trimester placental (n = 24) and decidual (n = 4) were used to examine ADAM8 localization and expression by in situ RNAScope hybridization, flow cytometry, quantitative PCR and immunoblot analyses. Primary trophoblasts were differentiated into EVT-like cells by plating on fibronectin and were assessed by immunofluorescence microscopy and immunoblot analysis of keratin-7, vimentin, epidermal growth factor receptor (EGFR), HLA-G and ADAM8. ADAM8 function was examined in primary EVTs and trophoblastic cell lines utilizing siRNA-directed silencing and over-expression strategies. Trophoblast migration was assessed using Transwell chambers, cell-matrix binding was tested using fibronectin-adhesion assays, and ADAM8-β1-integrin interactions were determined by immunofluorescence microscopy, co-immunoprecipitation experiments and function-promoting/inhibiting antibodies. MAIN RESULTS AND THE ROLE OF CHANCE Within first trimester placental tissues, ADAM8 preferentially localized to HLA-G+ trophoblasts residing within anchoring columns and decidua. Functional experiments in primary trophoblasts and trophoblastic cell lines show that ADAM8 promotes trophoblast migration through a mechanism independent of intrinsic protease activity. We show that ADAM8 localizes to peri-nuclear and cell-membrane actin-rich structures during cell-matrix attachment and promotes trophoblast binding to fibronectin matrix. Moreover, ADAM8 potentiates β1-integrin activation and promotes cell migration through a mechanism dependent on β1-integrin function. LIMITATIONS, REASONS FOR CAUTION The primary limitation of this study was the use of in vitro experiments in examining ADAM8 function, as well as the implementation of immortalized trophoblastic cell lines. Histological localization of ADAM8 within placental and decidual tissue sections was limited to mRNA level analysis. Further, patient information corresponding to tissues obtained by elective terminations was not available. WIDER IMPLICATIONS OF THE FINDINGS The novel non-proteolytic pro-migratory role for ADAM8 in controlling trophoblast migration revealed by this study sheds insight into the importance of ADAM8 in EVT biology and placental development. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by grants from the Natural Sciences and Engineering Research Council of Canada (NSERC-Discovery Grant) and the Canadian Institutes of Health Research (CIHR-Open Operating Grant). There are no conflicts or competing interests. TRIAL REGISTRATION NUMBER NA.
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Affiliation(s)
- H T Le
- British Columbia Children's Hospital Research Institute, 950 West 28th Ave, Vancouver, Canada.,Department of Obstetrics and Gynecology, The University of British Columbia, Faculty of Medicine, Suite 930, 1125 Howe Street, Vancouver, Canada
| | - J Atif
- Department of Obstetrics and Gynecology, The University of British Columbia, Faculty of Medicine, Suite 930, 1125 Howe Street, Vancouver, Canada
| | - D L Mara
- British Columbia Children's Hospital Research Institute, 950 West 28th Ave, Vancouver, Canada
| | - B Castellana
- British Columbia Children's Hospital Research Institute, 950 West 28th Ave, Vancouver, Canada.,Department of Obstetrics and Gynecology, The University of British Columbia, Faculty of Medicine, Suite 930, 1125 Howe Street, Vancouver, Canada
| | - J Treissman
- British Columbia Children's Hospital Research Institute, 950 West 28th Ave, Vancouver, Canada.,Department of Obstetrics and Gynecology, The University of British Columbia, Faculty of Medicine, Suite 930, 1125 Howe Street, Vancouver, Canada
| | - J Baltayeva
- British Columbia Children's Hospital Research Institute, 950 West 28th Ave, Vancouver, Canada.,Department of Obstetrics and Gynecology, The University of British Columbia, Faculty of Medicine, Suite 930, 1125 Howe Street, Vancouver, Canada
| | - A G Beristain
- British Columbia Children's Hospital Research Institute, 950 West 28th Ave, Vancouver, Canada.,Department of Obstetrics and Gynecology, The University of British Columbia, Faculty of Medicine, Suite 930, 1125 Howe Street, Vancouver, Canada
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13
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New Insights into the Process of Placentation and the Role of Oxidative Uterine Microenvironment. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:9174521. [PMID: 31341539 PMCID: PMC6615000 DOI: 10.1155/2019/9174521] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022]
Abstract
For a successful pregnancy to occur, a predecidualized receptive endometrium must be invaded by placental differentiated cells (extravillous trophoblast cells (EVTs)) and, at the same time, continue decidualization. EVT invasion is aimed at anchoring the placenta to the maternal uterus and ensuring local blood supply increase necessary to provide normal placental and foetal development. The first is achieved by migrating through the maternal endometrium and deeper into the myometrium, while the second by transforming uterine spiral arteries into large vessels. This process is a tightly regulated battle comprising interests of both the mother and the foetus. Invading EVTs are required to perform a scope of functions: move, adhere, proliferate, differentiate, interact, and digest the extracellular matrix (ECM); tolerate hypoxia; transform the maternal spiral arteries; and die by apoptosis. All these functions are modulated by their surrounding microenvironment: oxygen, soluble factors (e.g., cytokines, growth factors, and hormones), ECM proteins, and reactive oxygen species. A deeper comprehension of oxidative uterine microenvironment contribution to trophoblast function will be addressed in this review.
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14
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Blois SM, Dveksler G, Vasta GR, Freitag N, Blanchard V, Barrientos G. Pregnancy Galectinology: Insights Into a Complex Network of Glycan Binding Proteins. Front Immunol 2019; 10:1166. [PMID: 31231368 PMCID: PMC6558399 DOI: 10.3389/fimmu.2019.01166] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 05/08/2019] [Indexed: 12/15/2022] Open
Abstract
Galectins are a phylogenetically conserved family of soluble β-galactoside binding proteins, consisting of 15 different types, each with a specific function. Galectins contribute to placentation by regulating trophoblast development, migration, and invasion during early pregnancy. In addition, galectins are critical players regulating maternal immune tolerance to the embedded embryo. Recently, the role of galectins in angiogenesis during decidualization and in placenta formation has gained attention. Altered expression of galectins is associated with abnormal pregnancies and infertility. This review focuses on the role of galectins in pregnancy-associated processes and discusses the relevance of galectin-glycan interactions as potential therapeutic targets in pregnancy disorders.
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Affiliation(s)
- Sandra M Blois
- Reproductive Medicine Research Group, Division of General Internal and Psychosomatic Medicine, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany.,Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association, and Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Gabriela Dveksler
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Gerardo R Vasta
- Department of Microbiology and Immunology, Institute of Marine and Environmental Technology, University of Maryland School of Medicine, UMB, Baltimore, MD, United States
| | - Nancy Freitag
- Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association, and Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Véronique Blanchard
- Berlin Institute of Health, Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Gabriela Barrientos
- Laboratory of Experimental Medicine, Hospital Alemán, School of Medicine, University of Buenos Aires, CONICET, Buenos Aires, Argentina
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15
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Airway smooth muscle cells are insensitive to the anti-proliferative effects of corticosteroids: The novel role of insulin growth factor binding Protein-1 in asthma. Immunobiology 2019; 224:490-496. [PMID: 31133345 DOI: 10.1016/j.imbio.2019.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 12/15/2022]
Abstract
Airway remodeling in asthma manifests, in part, as enhanced airway smooth muscle (ASM) mass, due to myocyte proliferation. While the anti-proliferative effects of glucocorticoid (GC) were investigated in normal ASM cells (NASMC), little is known about such effects in ASM cells derived from asthma subjects (AASMC). We posit that GC differentially modulates mitogen-induced proliferation of AASMC and NASMC. Cells were cultured, starved, then treated with Epidermal growth factor (EGF) (10 ng/ml) and Platelet-derived growth factor (PDGF) (10 ng/ml) for 24 h and/or fluticasone propionate (FP) (100 nM) added 2 h before. Cell counts and flow cytometry analyses showed that FP failed to decrease the cell number of and DNA synthesis in AASMC irrespective of mitogens used. We also examine the ability of Insulin Growth Factor Binding Protein-1 (IGFBP-1), a steroid-inducible gene that deters cell growth in other cell types, to inhibit proliferation of AASMC where FP failed. We found that FP increased IGFBP1 mRNA and protein levels. Interestingly, the addition of IGFBP1 (1 μg/ml) to FP completely inhibited the proliferation of AASMC irrespective to the mitogens used. Further investigation of different signaling molecules involved in ASM growth and GC receptor functions (Protein kinase B (PKB/AKT), Mitogen-activated protein kinases (MAPKs), Focal Adhesion Kinase (FAK)) showed that IGFBP-1 selectively decreased mitogen-induced p38 phosphorylation in AASMC. Collectively, our results show the insensitivity of AASMC to the anti-proliferative effects of GC, and demonstrate the ability of IGFBP1 to modulate AASMC growth representing, hence, a promising strategy to control ASM growth in subjects with GC insensitive asthma.
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16
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Pollheimer J, Vondra S, Baltayeva J, Beristain AG, Knöfler M. Regulation of Placental Extravillous Trophoblasts by the Maternal Uterine Environment. Front Immunol 2018; 9:2597. [PMID: 30483261 PMCID: PMC6243063 DOI: 10.3389/fimmu.2018.02597] [Citation(s) in RCA: 218] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 10/22/2018] [Indexed: 12/22/2022] Open
Abstract
During placentation invasive extravillous trophoblasts (EVTs) migrate into the maternal uterus and modify its vessels. In particular, remodeling of the spiral arteries by EVTs is critical for adapting blood flow and nutrient transport to the developing fetus. Failures in this process have been noticed in different pregnancy complications such as preeclampsia, intrauterine growth restriction, stillbirth, or recurrent abortion. Upon invasion into the decidua, the endometrium of pregnancy, EVTs encounter different maternal cell types such as decidual macrophages, uterine NK (uNK) cells and stromal cells expressing a plethora of growth factors and cytokines. Here, we will summarize development of the EVT lineage, a process occurring independently of the uterine environment, and formation of its different subtypes. Further, we will discuss interactions of EVTs with arteries, veins and lymphatics and illustrate how the decidua and its different immune cells regulate EVT differentiation, invasion and survival. The present literature suggests that the decidual environment and its soluble factors critically modulate EVT function and reproductive success.
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Affiliation(s)
- Jürgen Pollheimer
- Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
| | - Sigrid Vondra
- Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
| | - Jennet Baltayeva
- British Columbia's Children's Hospital Research Institute, Vancouver, BC, Canada.,Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC, Canada
| | - Alexander Guillermo Beristain
- British Columbia's Children's Hospital Research Institute, Vancouver, BC, Canada.,Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC, Canada
| | - Martin Knöfler
- Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
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17
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Zhang J, Mo HQ, Tian FJ, Zeng WH, Liu XR, Ma XL, Li X, Qin S, Fan CF, Lin Y. EIF5A1 promotes trophoblast migration and invasion via ARAF-mediated activation of the integrin/ERK signaling pathway. Cell Death Dis 2018; 9:926. [PMID: 30206208 PMCID: PMC6134074 DOI: 10.1038/s41419-018-0971-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 08/03/2018] [Accepted: 08/20/2018] [Indexed: 12/17/2022]
Abstract
Trophoblast dysfunction is one mechanism implicated in the etiology of recurrent miscarriage (RM). Regulation of trophoblast function, however, is complex and the mechanisms contributing to dysregulation remain to be elucidated. Herein, we found EIF5A1 expression levels to be significantly decreased in cytotrophoblasts in RM villous tissues compared with healthy controls. Using the HTR-8/SVneo cell line as a model system, we found that overexpression of EIF5A1 promotes trophoblast proliferation, migration and invasion in vitro. Knockdown of EIF5A1 or inhibiting its hypusination with N1-guanyl-1,7-diaminoheptane (GC7) suppresses these activities. Similarly, mutating EIF5A1 to EIF5A1K50A to prevent hypusination abolishes its effects on proliferation, migration and invasion. Furthermore, upregulation of EIF5A1 increases the outgrowth of trophoblasts in a villous explant culture model, whereas knockdown has the opposite effect. Suppression of EIF5A1 hypusination also inhibits the outgrowth of trophoblasts in explants. Mechanistically, ARAF mediates the regulation of trophoblast migration and invasion by EIF5A1. Hypusinated EIF5A1 regulates the integrin/ERK signaling pathway via controlling the translation of ARAF. ARAF level is also downregulated in trophoblasts of RM villous tissues and expression of ARAF is positively correlated with EIF5A1. Together, our results suggest that EIF5A1 may be a regulator of trophoblast function at the maternal-fetal interface and low levels of EIF5A1 and ARAF may be associated with RM.
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Affiliation(s)
- Jing Zhang
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Hui-Qin Mo
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Fu-Ju Tian
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Wei-Hong Zeng
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao-Rui Liu
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao-Ling Ma
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao Li
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Shi Qin
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Cui-Fang Fan
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, P. R. China
| | - Yi Lin
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China.
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
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18
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Inside the Endometrial Cell Signaling Subway: Mind the Gap(s). Int J Mol Sci 2018; 19:ijms19092477. [PMID: 30134622 PMCID: PMC6164241 DOI: 10.3390/ijms19092477] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/03/2018] [Accepted: 08/04/2018] [Indexed: 12/13/2022] Open
Abstract
Endometrial cells perceive and respond to their microenvironment forming the basis of endometrial homeostasis. Errors in endometrial cell signaling are responsible for a wide spectrum of endometrial pathologies ranging from infertility to cancer. Intensive research over the years has been decoding the sophisticated molecular means by which endometrial cells communicate to each other and with the embryo. The objective of this review is to provide the scientific community with the first overview of key endometrial cell signaling pathways operating throughout the menstrual cycle. On this basis, a comprehensive and critical assessment of the literature was performed to provide the tools for the authorship of this narrative review summarizing the pivotal components and signaling cascades operating during seven endometrial cell fate “routes”: proliferation, decidualization, implantation, migration, breakdown, regeneration, and angiogenesis. Albeit schematically presented as separate transit routes in a subway network and narrated in a distinct fashion, the majority of the time these routes overlap or occur simultaneously within endometrial cells. This review facilitates identification of novel trajectories of research in endometrial cellular communication and signaling. The meticulous study of endometrial signaling pathways potentiates both the discovery of novel therapeutic targets to tackle disease and vanguard fertility approaches.
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19
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Aziz A, Haywood NJ, Cordell PA, Smith J, Yuldasheva NY, Sengupta A, Ali N, Mercer BN, Mughal RS, Riches K, Cubbon RM, Porter KE, Kearney MT, Wheatcroft SB. Insulinlike Growth Factor-Binding Protein-1 Improves Vascular Endothelial Repair in Male Mice in the Setting of Insulin Resistance. Endocrinology 2018; 159:696-709. [PMID: 29186427 PMCID: PMC5776633 DOI: 10.1210/en.2017-00572] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/21/2017] [Indexed: 12/19/2022]
Abstract
Insulin resistance is associated with impaired endothelial regeneration in response to mechanical injury. We recently demonstrated that insulinlike growth factor-binding protein-1 (IGFBP1) ameliorated insulin resistance and increased nitric oxide generation in the endothelium. In this study, we hypothesized that IGFBP1 would improve endothelial regeneration and restore endothelial reparative functions in the setting of insulin resistance. In male mice heterozygous for deletion of insulin receptors, endothelial regeneration after femoral artery wire injury was enhanced by transgenic expression of human IGFBP1 (hIGFBP1). This was not explained by altered abundance of circulating myeloid angiogenic cells. Incubation of human endothelial cells with hIGFBP1 increased integrin expression and enhanced their ability to adhere to and repopulate denuded human saphenous vein ex vivo. In vitro, induction of insulin resistance by tumor necrosis factor α (TNFα) significantly inhibited endothelial cell migration and proliferation. Coincubation with hIGFBP1 restored endothelial migratory and proliferative capacity. At the molecular level, hIGFBP1 induced phosphorylation of focal adhesion kinase, activated RhoA and modulated TNFα-induced actin fiber anisotropy. Collectively, the effects of hIGFBP1 on endothelial cell responses and acceleration of endothelial regeneration in mice indicate that manipulating IGFBP1 could be exploited as a putative strategy to improve endothelial repair in the setting of insulin resistance.
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Affiliation(s)
- Amir Aziz
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Natalie J Haywood
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Paul A Cordell
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Jess Smith
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Nadira Y Yuldasheva
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Anshuman Sengupta
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Noman Ali
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Ben N Mercer
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Romana S Mughal
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Kirsten Riches
- School of Chemistry and Biosciences, University of Bradford, Bradford, United Kingdom
| | - Richard M Cubbon
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Karen E Porter
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Mark T Kearney
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
| | - Stephen B Wheatcroft
- Leeds Institute of Cardiovascular and Metabolic Medicine and Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, United Kingdom
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20
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Raheem KA. Cytokines, growth factors and macromolecules as mediators of implantation in mammalian species. Int J Vet Sci Med 2017; 6:S6-S14. [PMID: 30761315 PMCID: PMC6161864 DOI: 10.1016/j.ijvsm.2017.12.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/08/2017] [Accepted: 12/09/2017] [Indexed: 12/12/2022] Open
Abstract
Implantation is one of the most critical steps in mammalian reproduction and implantation failure constitutes a major cause of infertility in both animals and humans. The mechanism of implantation is exclusively under the control of ovarian steroids progesterone and oestrogen whose actions are mediated in a complex phenomenon that involves a number of cytokines and growth factors. According to a plethora of literature on implantation in mammalian species, prominent of these cytokines and growth factor playing crucial roles in implantation include integrin, osteopontin, integrin, insulin-like growth factor and leukaemia inhibitory factor. Others are cluster domain 44, hyaluronan system and many non-adhesive molecules such as glycoprotein mucin 1. In this review, the specific roles played by these molecules are expatiated. Generally, they function as adhesive molecules that facilitate attachment of ligands/proteins on the trophectoderm to their respective receptors on endometrial luminal epithelia or vice versa. Sometimes, they also function as signalling molecules that enhance communication between implanting blastocyst and receptive endometrium. This is of particular importance in embryo culture and embryo transfer where in vitro derived blastocyst unlike the in vivo condition, is not exposed to these substances and hence, their absence may be partly responsible for the low implantation rate observed in the surrogate. Appreciation of the roles played by these cytokines, growth factors and molecules as revealed in this review will spur further research on these topics, facilitate their inclusion in embryo culture media (if positively required) and are considered as vital aspect while developing strategies to improve fertility.
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Affiliation(s)
- Kabir A Raheem
- Dept. of Theriogenology, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria
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21
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Young CH, Rothfuss HM, Gard PF, Muth A, Thompson PR, Ashley RL, Cherrington BD. Citrullination regulates the expression of insulin-like growth factor-binding protein 1 (IGFBP1) in ovine uterine luminal epithelial cells. Reproduction 2016; 153:1-10. [PMID: 29565015 DOI: 10.1530/rep-16-0494] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 09/28/2016] [Accepted: 10/10/2016] [Indexed: 01/19/2023]
Abstract
There are five peptidylarginine deiminase (PAD) isozymes designated as PADs 1, 2, 3, 4 and 6, and many are expressed in female reproductive tissues. These enzymes post-translationally convert positively charged arginine amino acids into neutral citrulline residues. Targets for PAD-catalyzed citrullination include arginine residues on histone tails, which results in chromatin decondensation and changes in gene expression. Some of the first studies examining PADs found that they are localized to rodent uterine epithelial cells. Despite these findings, the function of PAD-catalyzed citrullination in uterine epithelial cells is still unknown. To address this, we first examined PAD expression in uterine cross-sections from pregnant ewes on gestation day 25 (d25). Immunohistochemistry revealed that the levels of PADs 2 and 4 are robust in luminal and glandular epithelia compared with those of PADs 1 and 3. As PADs 2 and 4 have well-characterized roles in histone citrullination, we next hypothesized that PADs citrullinate histones in these uterine cells. Examination of caruncle lysates from pregnant ewes on gestation d25 and an ovine luminal epithelial (OLE) cell line shows that histone H3 arginine residues 2, 8, 17 and 26 are citrullinated, but histone H4 arginine 3 is not. Using a pan-PAD inhibitor, we next attenuated histone citrullination in OLE cells, which resulted in a significant decrease in the expression of insulin-like growth factor-binding protein 1 (IGFBP1) mRNA. As IGFBP1 is important for the migration and attachment of the trophectoderm to uterine endometrium, our results suggest that PAD-catalyzed citrullination may be an important post-translational mechanism for the establishment of pregnancy in ewes.
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Affiliation(s)
- Coleman H Young
- Department of Zoology and PhysiologyUniversity of Wyoming, Laramie, Wyoming, USA
| | - Heather M Rothfuss
- Department of Zoology and PhysiologyUniversity of Wyoming, Laramie, Wyoming, USA
| | - Philip F Gard
- Department of Zoology and PhysiologyUniversity of Wyoming, Laramie, Wyoming, USA
| | - Aaron Muth
- Department of Biochemistry and Molecular PharmacologyUniversity of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Paul R Thompson
- Department of Biochemistry and Molecular PharmacologyUniversity of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Ryan L Ashley
- Department of Animal and Range SciencesNew Mexico State University, Las Cruces, New Mexico, USA
| | - Brian D Cherrington
- Department of Zoology and PhysiologyUniversity of Wyoming, Laramie, Wyoming, USA
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22
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Tanaka K, Sakai K, Matsushima M, Matsuzawa Y, Izawa T, Nagashima T, Furukawa S, Kobayashi Y, Iwashita M. Branched-chain amino acids regulate insulin-like growth factor-binding protein 1 (IGFBP1) production by decidua and influence trophoblast migration through IGFBP1. Mol Hum Reprod 2016; 22:890-9. [PMID: 27193429 DOI: 10.1093/molehr/gaw032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 05/13/2016] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Do branched-chain amino acids (BCAAs) influence the migration of human extravillous trophoblast (EVT) cells through changes in insulin-like growth factor-binding protein 1 (IGFBP1) production in decidual cells? STUDY FINDING Decidua-derived IGFBP1 had a stimulating effect on migration of EVT. WHAT IS KNOWN ALREADY IGFBP1 is abundantly secreted from human decidual cells and influences trophoblast migration in human placenta of early pregnancy. In hepatic cells, the expression of IGFBP1 is influenced by nutritional status and BCAAs regulate IGFBP1 production. STUDY DESIGN, SAMPLES/MATERIALS, METHODS This is a laboratory-based study using human decidual cells and trophoblast cells isolated from placental tissue of early pregnancy (n = 50) and grown as primary cultures. Production of IGFBP1 from decidual cells was examined by enzyme-linked immunosorbent assay and immunoblotting after incubation with or without BCAAs. EVT migration was evaluated using the media conditioned by decidual cells. The effect of conditioned media on phosphorylation of focal adhesion kinase (FAK) in EVT was also analyzed by immunoblotting. The same experiments were repeated in the presence of RGD peptide, which inhibits IGFBP1 binding to α5β1 integrin. An EVT migration assay and the immunoblotting of phosphorylated FAK were also conducted with exogenous IGFBP1. The effect of the conditioned media on cytotrophoblast cell number was also assessed using WST-1 in a cell proliferation assay. MAIN RESULTS AND THE ROLE OF CHANCE Deprivation of BCAAs on decidual cells significantly suppressed IGFBP1 secretion (P < 0.05, versus BCAA+). Exogenous IGFBP1-stimulated EVT migration (P < 0.05) and phosphorylation of FAK (P < 0.05), and the RGD peptide inhibited these effects. EVT migration and phosphorylation of FAK were stimulated by the conditioned media, presumably by IGFBP1 in the media. RGD treatment abrogated the stimulating effects of conditioned media. The conditioned media deprived of BCAAs had suppressive effects on EVT migration (P < 0.05, versus BCAA+) and phosphorylation of FAK (P < 0.05, versus BCAA+). The conditioned media did not affect number of cytotrophoblast cells. LIMITATIONS, REASONS FOR CAUTION The conclusions are based on in vitro experiments with human decidual cells and trophoblast cells isolated from placental tissue of early pregnancy, and we were unable to ascertain whether these mechanisms actually operate in vivo. We investigated the effect of decidua-derived IGFBP1 on EVT migration, however, we cannot completely rule out the possibility that endogenous IGF could also influence cell migration. WIDER IMPLICATIONS OF FINDINGS Interruption of the BCAA supply to uterine decidual cells in early pregnancy may suppress EVT migration through reduced IGFBP1 secretion, which may be one of the pathophysiological conditions responsible for pre-eclampsia. LARGE SCALE DATA None. STUDY FUNDING/ AND COMPETING INTERESTS All funds were obtained through Kyorin University School of Medicine. The authors have no conflict of interest to declare.
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Affiliation(s)
- Kei Tanaka
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Keiji Sakai
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Miho Matsushima
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Yukiko Matsuzawa
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Tomoko Izawa
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Takashi Nagashima
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Seishi Furukawa
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Yoichi Kobayashi
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Mitsutoshi Iwashita
- Department of Obstetrics and Gynecology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
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23
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Lala PK, Nandi P. Mechanisms of trophoblast migration, endometrial angiogenesis in preeclampsia: The role of decorin. Cell Adh Migr 2016; 10:111-25. [PMID: 26745663 DOI: 10.1080/19336918.2015.1106669] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The objective of the present review is to synthesize the information on the cellular and molecular players responsible for maintaining a homeostatic balance between a naturally invasive human placenta and the maternal uterus in pregnancy; to review the roles of decorin (DCN) as a molecular player in this homeostasis; to list the common maladies associated with a break-down in this homeostasis, resulting from a hypo-invasive or hyper-invasive placenta, and their underlying mechanisms. We show that both the fetal components of the placenta, represented primarily by the extravillous trophoblast, and the maternal component represented primarily by the decidual tissue and the endometrial arterioles, participate actively in this balance. We discuss the process of uterine angiogenesis in the context of uterine arterial changes during normal pregnancy and preeclampsia. We compare and contrast trophoblast growth and invasion with the processes involved in tumorigenesis with special emphasis on the roles of DCN and raise important questions that remain to be addressed. Decorin (DCN) is a small leucine-rich proteoglycan produced by stromal cells, including dermal fibroblasts, chondrocytes, chorionic villus mesenchymal cells and decidual cells of the pregnant endometrium. It contains a 40 kDa protein core having 10 leucine-rich repeats covalently linked with a glycosaminoglycan chain. Biological functions of DCN include: collagen assembly, myogenesis, tissue repair and regulation of cell adhesion and migration by binding to ECM molecules or antagonising multiple tyrosine kinase receptors (TKR) including EGFR, IGF-IR, HGFR and VEGFR-2. DCN restrains angiogenesis by binding to thrombospondin-1, TGFβ, VEGFR-2 and possibly IGF-IR. DCN can halt tumor growth by antagonising oncogenic TKRs and restraining angiogenesis. DCN actions at the fetal-maternal interface include restraint of trophoblast migration, invasion and uterine angiogenesis. We demonstrate that DCN overexpression in the decidua is associated with preeclampsia (PE); this may have a causal role in PE by compromising endovascular differentiation of the trophoblast and uterine angiogenesis, resulting in poor arterial remodeling. Elevated DCN level in the maternal blood is suggested as a potential biomarker in PE.
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Affiliation(s)
- Peeyush K Lala
- a Department of Anatomy and Cell Biology , Schulich School of Medicine and Dentistry, the University of Western Ontario , London , Ontario , Canada.,b Department of Oncology , Schulich School of Medicine and Dentistry, the University of Western Ontario , London , Ontario , Canada.,c Chidren's Health Research Institute, Schulich School of Medicine and Dentistry, the University of Western Ontario , London , Ontario , Canada
| | - Pinki Nandi
- a Department of Anatomy and Cell Biology , Schulich School of Medicine and Dentistry, the University of Western Ontario , London , Ontario , Canada
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Kodama S, Yamazaki Y, Negishi M. Pregnane X Receptor Represses HNF4α Gene to Induce Insulin-Like Growth Factor-Binding Protein IGFBP1 that Alters Morphology of and Migrates HepG2 Cells. Mol Pharmacol 2015; 88:746-57. [PMID: 26232425 DOI: 10.1124/mol.115.099341] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/23/2015] [Indexed: 12/27/2022] Open
Abstract
Upon treatment with the pregnane X receptor (PXR) activator rifampicin (RIF), human hepatocellular carcinoma HepG2-derived ShP51 cells that stably express PXR showed epithelial-mesenchymal transition (EMT)-like morphological changes and migration. Our recent DNA microarrays have identified hepatocyte nuclear factor (HNF) 4α and insulin-like growth factor-binding protein (IGFBP) 1 mRNAs to be downregulated and upregulated, respectively, in RIF-treated ShP51 cells, and these regulations were confirmed by the subsequent real-time polymerase chain reaction and Western blot analyses. Using this cell system, we demonstrated here that the PXR-HNF4α-IGFBP1 pathway is an essential signal for PXR-induced morphological changes and migration. First, we characterized the molecular mechanism underlying the PXR-mediated repression of the HNF4α gene. Chromatin conformation capture and chromatin immunoprecipitation (ChIP) assays revealed that PXR activation by RIF disrupted enhancer-promoter communication and prompted deacetylation of histone H3 in the HNF4α P1 promoter. Cell-based reporter and ChIP assays showed that PXR targeted the distal enhancer of the HNF4α P1 promoter and stimulated dissociation of HNF3β from the distal enhancer. Subsequently, small interfering RNA knockdown of HNF4α connected PXR-mediated gene regulation with the PXR-induced cellular responses, showing that the knockdown resulted in the upregulation of IGFBP1 and EMT-like morphological changes without RIF treatment. Moreover, recombinant IGFBP1 augmented migration, whereas an anti-IGFBP1 antibody attenuated both PXR-induced morphological changes and migration in ShP51 cells. PXR indirectly activated the IGFBP1 gene by repressing the HNF4α gene, thus enabling upregulation of IGFBP1 to change the morphology of ShP51 cells and cause migration. These results provide new insights into PXR-mediated cellular responses toward xenobiotics including therapeutics.
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Affiliation(s)
- Susumu Kodama
- Pharmacogenetics Section, Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Yuichi Yamazaki
- Pharmacogenetics Section, Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Masahiko Negishi
- Pharmacogenetics Section, Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
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25
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Massimiani M, Vecchione L, Piccirilli D, Spitalieri P, Amati F, Salvi S, Ferrazzani S, Stuhlmann H, Campagnolo L. Epidermal growth factor-like domain 7 promotes migration and invasion of human trophoblast cells through activation of MAPK, PI3K and NOTCH signaling pathways. Mol Hum Reprod 2015; 21:435-51. [PMID: 25667199 DOI: 10.1093/molehr/gav006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 02/05/2015] [Indexed: 12/25/2022] Open
Abstract
Epidermal growth factor-like domain 7 (Egfl7) is a gene that encodes a partially secreted protein and whose expression is largely restricted to the endothelia. We recently reported that EGFL7 is also expressed by trophoblast cells in mouse and human placentas. Here, we investigated the molecular pathways that are regulated by EGFL7 in trophoblast cells. Stable EGFL7 overexpression in a Jeg3 human choriocarcinoma cell line resulted in significantly increased cell migration and invasiveness, while cell proliferation was unaffected. Analysis of mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase (PI3K) pathways showed that EGFL7 promotes Jeg3 cell motility by activating both pathways. We show that EGFL7 activates the epidermal growth factor receptor (EGFR) in Jeg3 cells, resulting in downstream activation of extracellular regulated kinases (ERKs). In addition, we provide evidence that EGFL7-triggered migration of Jeg3 cells involves activation of NOTCH signaling. EGFL7 and NOTCH1 are co-expressed in Jeg3 cells, and blocking of NOTCH activation abrogates enhanced migration of Jeg3 cells overexpressing EGFL7. We also demonstrate that signaling through EGFR and NOTCH converged to mediate EGFL7 effects. Reduction of endogenous EGFL7 expression in Jeg3 cells significantly decreased cell migration. We further confirmed that EGFL7 stimulates cell migration by using primary human first trimester trophoblast (PTB) cells overexpressing EGFL7. In conclusion, our data suggest that in trophoblast cells, EGFL7 regulates cell migration and invasion by activating multiple signaling pathways. Our results provide a possible explanation for the correlation between reduced expression of EGFL7 and inadequate trophoblast invasion observed in placentopathies.
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Affiliation(s)
- M Massimiani
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - L Vecchione
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - D Piccirilli
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - P Spitalieri
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - F Amati
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - S Salvi
- Department of Gynecology and Obstetrics, Catholic University of the Sacred Heart, Largo Agostino Gemelli 8, 00168 Rome, Italy
| | - S Ferrazzani
- Department of Gynecology and Obstetrics, Catholic University of the Sacred Heart, Largo Agostino Gemelli 8, 00168 Rome, Italy
| | - H Stuhlmann
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA
| | - L Campagnolo
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
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26
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Crosley EJ, Dunk CE, Beristain AG, Christians JK. IGFBP-4 and -5 are expressed in first-trimester villi and differentially regulate the migration of HTR-8/SVneo cells. Reprod Biol Endocrinol 2014; 12:123. [PMID: 25475528 PMCID: PMC4271501 DOI: 10.1186/1477-7827-12-123] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 11/26/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Adverse gestational outcomes such as preeclampsia (PE) and intrauterine growth restriction (IUGR) are associated with placental insufficiency. Normal placental development relies on the insulin-like growth factors -I and -II (IGF-I and -II), in part to stimulate trophoblast proliferation and extravillous trophoblast (EVT) migration. The insulin-like growth factor binding proteins (IGFBPs) modulate the bioavailability of IGFs in various ways, including sequestration, potentiation, and/or increase in half-life. The roles of IGFBP-4 and -5 in the placenta are unknown, despite consistent associations between pregnancy complications and the levels of two IGFBP-4 and/or -5 proteases, pregnancy-associated plasma protein -A and -A2 (PAPP-A and PAPP-A2). The primary objective of this study was to elucidate the effects of IGFBP-4 and -5 on IGF-I and IGF-II in a model of EVT migration. A related objective was to determine the timing and location of IGFBP-4 and -5 expression in the placental villi. METHODS We used wound healing assays to examine the effects of IGFBP-4 and -5 on the migration of HTR-8/SVneo cells following 4 hours of serum starvation and 24 hours of treatment. Localization of IGFBP-4, -5 and PAPP-A2 was assessed by immunohistochemical staining of first trimester placental sections. RESULTS 2 nM IGF-I and -II each increased HTR-8/SVneo cell migration with IGF-I increasing migration significantly more than IGF-II. IGFBP-4 and -5 showed different levels of inhibition against IGF-I. 20 nM IGFBP-4 completely blocked the effects of 2 nM IGF-I, while 20 nM IGFBP-5 significantly reduced the effects of 2 nM IGF-I, but not to control levels. Either 20 nM IGFBP-4 or 20 nM IGFBP-5 completely blocked the effects of 2 nM IGF-II. Immunohistochemistry revealed co-localization of IGFBP-4, IGFBP-5 and PAPP-A2 in the syncytiotrophoblast layer of first trimester placental villi as early as 5 weeks of gestational age. CONCLUSIONS IGFBP-4 and -5 show different levels of inhibition on the migration-stimulating effects of IGF-I and IGF-II, suggesting different roles for PAPP-A and PAPP-A2. Moreover, co-localization of the pappalysins and their substrates within placental villi suggests undescribed roles of these molecules in early placental development.
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Affiliation(s)
- Erin J Crosley
- Biological Sciences, Simon Fraser University, V5A 1S6 Burnaby, Canada
| | - Caroline E Dunk
- Research Centre for Women’s and Infants Health, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Canada
| | - Alexander G Beristain
- Department of Obstetrics and Gynecology, The University of British Columbia, Vancouver, Canada
- The Child and Family Research Institute, Vancouver, Canada
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27
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El-Sayed FG, Camden JM, Woods LT, Khalafalla MG, Petris MJ, Erb L, Weisman GA. P2Y2 nucleotide receptor activation enhances the aggregation and self-organization of dispersed salivary epithelial cells. Am J Physiol Cell Physiol 2014; 307:C83-96. [PMID: 24760984 DOI: 10.1152/ajpcell.00380.2013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Hyposalivation resulting from salivary gland dysfunction leads to poor oral health and greatly reduces the quality of life of patients. Current treatments for hyposalivation are limited. However, regenerative medicine to replace dysfunctional salivary glands represents a revolutionary approach. The ability of dispersed salivary epithelial cells or salivary gland-derived progenitor cells to self-organize into acinar-like spheres or branching structures that mimic the native tissue holds promise for cell-based reconstitution of a functional salivary gland. However, the mechanisms involved in salivary epithelial cell aggregation and tissue reconstitution are not fully understood. This study investigated the role of the P2Y2 nucleotide receptor (P2Y2R), a G protein-coupled receptor that is upregulated following salivary gland damage and disease, in salivary gland reconstitution. In vitro results with the rat parotid acinar Par-C10 cell line indicate that P2Y2R activation with the selective agonist UTP enhances the self-organization of dispersed salivary epithelial cells into acinar-like spheres. Other results indicate that the P2Y2R-mediated response is dependent on epidermal growth factor receptor activation via the metalloproteases ADAM10/ADAM17 or the α5β1 integrin/Cdc42 signaling pathway, which leads to activation of the MAPKs JNK and ERK1/2. Ex vivo data using primary submandibular gland cells from wild-type and P2Y2R(-/-) mice confirmed that UTP-induced migratory responses required for acinar cell self-organization are mediated by the P2Y2R. Overall, this study suggests that the P2Y2R is a promising target for salivary gland reconstitution and identifies the involvement of two novel components of the P2Y2R signaling cascade in salivary epithelial cells, the α5β1 integrin and the Rho GTPase Cdc42.
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Affiliation(s)
- Farid G El-Sayed
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
| | - Jean M Camden
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
| | - Lucas T Woods
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
| | - Mahmoud G Khalafalla
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
| | - Michael J Petris
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Department of Nutritional Sciences and Exercise Physiology, University of Missouri, Columbia, Missouri; and Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
| | - Laurie Erb
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
| | - Gary A Weisman
- Department of Biochemistry, University of Missouri, Columbia, Missouri; Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri
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28
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Segond N, Degrelle SA, Berndt S, Clouqueur E, Rouault C, Saubamea B, Dessen P, Fong KSK, Csiszar K, Badet J, Evain-Brion D, Fournier T. Transcriptome analysis of PPARγ target genes reveals the involvement of lysyl oxidase in human placental cytotrophoblast invasion. PLoS One 2013; 8:e79413. [PMID: 24265769 PMCID: PMC3827157 DOI: 10.1371/journal.pone.0079413] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 09/24/2013] [Indexed: 12/14/2022] Open
Abstract
Human placental development is characterized by invasion of extravillous cytotrophoblasts (EVCTs) into the uterine wall during the first trimester of pregnancy. Peroxisome proliferator-activated receptor γ (PPARγ) plays a major role in placental development, and activation of PPARγ by its agonists results in inhibition of EVCT invasion in vitro. To identify PPARγ target genes, microarray analysis was performed using GeneChip technology on EVCT primary cultures obtained from first-trimester human placentas. Gene expression was compared in EVCTs treated with the PPARγ agonist rosiglitazone versus control. A total of 139 differentially regulated genes were identified, and changes in the expression of the following 8 genes were confirmed by reverse transcription-quantitative polymerase chain reaction: a disintegrin and metalloproteinase domain12 (ADAM12), connexin 43 (CX43), deleted in liver cancer 1 (DLC1), dipeptidyl peptidase 4 (DPP4), heme oxygenase 1 (HMOX-1), lysyl oxidase (LOX), plasminogen activator inhibitor 1 (PAI-1) and PPARγ. Among the upregulated genes, lysyl oxidase (LOX) was further analyzed. In the LOX family, only LOX, LOXL1 and LOXL2 mRNA expression was significantly upregulated in rosiglitazone-treated EVCTs. RNA and protein expression of the subfamily members LOX, LOXL1 and LOXL2 were analyzed by absolute RT-qPCR and western blotting, and localized by immunohistochemistry and immunofluorescence-confocal microscopy. LOX protein was immunodetected in the EVCT cytoplasm, while LOXL1 was found in the nucleus and nucleolus. No signal was detected for LOXL2 protein. Specific inhibition of LOX activity by β-aminopropionitrile in cell invasion assays led to an increase in EVCT invasiveness. These results suggest that LOX, LOXL1 and LOXL2 are downstream PPARγ targets and that LOX activity is a negative regulator of trophoblastic cell invasion.
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Affiliation(s)
- Nadine Segond
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUP Foundation, Paris, France
| | - Séverine A. Degrelle
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUP Foundation, Paris, France
| | - Sarah Berndt
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUP Foundation, Paris, France
| | - Elodie Clouqueur
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUP Foundation, Paris, France
| | - Christine Rouault
- INSERM, UMR 872, Equipe 7, Paris, France
- Université Pierre et Marie Curie, Paris, France
| | - Bruno Saubamea
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- INSERM, U705, Paris, France
- CNRS, UMR 8206, Paris, France
| | | | - Keith S. K. Fong
- John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
| | - Katalin Csiszar
- John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
| | - Josette Badet
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Danièle Evain-Brion
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUP Foundation, Paris, France
| | - Thierry Fournier
- INSERM, UMR-S767, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUP Foundation, Paris, France
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29
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Cheng JC, Chang HM, Leung PCK. Transforming growth factor-β1 inhibits trophoblast cell invasion by inducing Snail-mediated down-regulation of vascular endothelial-cadherin protein. J Biol Chem 2013; 288:33181-92. [PMID: 24106276 DOI: 10.1074/jbc.m113.488866] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Human trophoblast cells express transforming growth factor-β (TGF-β) and TGF-β receptors. It has been shown that TGF-β1 treatment decreases the invasiveness of trophoblast cells. However, the molecular mechanisms underlying TGF-β1-decreased trophoblast invasion are still not fully understood. In the current study, we demonstrated that treatment of HTR-8/SVneo human trophoblast cells with TGF-β1 decreased cell invasion and down-regulated the expression of vascular endothelial cadherin (VE-cadherin). In addition, the inhibitory effect of TGF-β1 on VE-cadherin was confirmed in primary cultures of human trophoblast cells. Moreover, knockdown of VE-cadherin using siRNA decreased the invasiveness of HTR-8/SVneo cells and primary cultures of trophoblast cells. Treatment with TGF-β1 induced the activation of Smad-dependent signaling pathways and the expression of Snail and Slug. Knockdown of Smads attenuated TGF-β1-induced up-regulation of Snail and Slug and down-regulation of VE-cadherin. Interestingly, depletion of Snail, but not Slug, attenuated TGF-β1-induced down-regulation of VE-cadherin. Furthermore, overexpression of Snail suppressed VE-cadherin expression. Chromatin immunoprecipitation analyses showed the direct binding of Snail to the VE-cadherin promoter. These results provide evidence that Snail mediates TGF-β1-induced down-regulation of VE-cadherin, which subsequently contributed to TGF-β1-decreased trophoblast cell invasion.
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Affiliation(s)
- Jung-Chien Cheng
- From the Department of Obstetrics and Gynaecology, Child & Family Research Institute, University of British Columbia, Vancouver, British Columbia V6H 3V5, Canada
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30
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Kaitu’u-Lino TJ, Bambang K, Onwude J, Hiscock R, Konje J, Tong S. Plasma MIC-1 and PAPP-a levels are decreased among women presenting to an early pregnancy assessment unit, have fetal viability confirmed but later miscarry. PLoS One 2013; 8:e72437. [PMID: 24069146 PMCID: PMC3771981 DOI: 10.1371/journal.pone.0072437] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 07/10/2013] [Indexed: 11/18/2022] Open
Abstract
Background We have recently shown first trimester Macrophage inhibitory cytokine-1 (MIC-1) and Pregnancy Associated Plasma Protein-A (PAPP-A) serum concentrations are depressed among asymptomatic women destined to miscarry. Here we examined whether plasma levels of MIC-1 and PAPP-A are depressed among women presenting to an Early Pregnancy Assessment Unit (EPAU), noted to have a confirmed viable fetus, but subsequently miscarry. Methods We performed a prospective cohort study, recruiting 462 women in the first trimester presenting to EPAU and had fetal viability confirmed by ultrasound. We obtained plasma samples on the same day and measured MIC-1, PAPP-A and human chorionic gonadotrophin (hCG), grouping the cohort according to whether they later miscarried or not. To correct for changes in analyte levels across gestation, we expressed the data as Multiples of the normal Median (MoMs). Results We recruited 462 participants presenting to EPAU at 5-12 weeks gestation. Most (80%) presented with symptoms of threatened miscarriage (e.g. abdominal pain, vaginal bleeding). 34 (7.4%) subsequently miscarried. Median plasma MIC-1 levels among those who miscarried were 50% of those with ongoing pregnancies (Miscarriage cohort MoM 0.50 (25th-75th centiles: 0.29-1.33) vs ongoing pregnancies MoM 1.00 (0.65-1.38); p=0.0025). Median plasma PAPP-A MoMs among those who miscarried was 0.57 (0.00-1.12), significantly lower than those with ongoing pregnancies (MoMs 1.00 (0.59-1.59); p=0.036). Plasma hCG levels were also significantly depressed among those who miscarried compared to those with ongoing pregnancies. However, the performance of MIC-1 as a diagnostic marker to predict miscarriage in this cohort was modest, and not improved with the addition of hCG. Conclusion MIC-1 and PAPP-A levels are significantly depressed in women presenting to EPAU with ultrasound evidence of fetal viability, but later miscarry. While they are unlikely to be useful as predictive biomarkers in this clinical setting, they probably play important roles in the maintenance of early pregnancy.
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Affiliation(s)
- Tu’uhevaha J. Kaitu’u-Lino
- Translational Obstetrics Group, Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, Heidelberg, Victoria, Australia
| | - Katerina Bambang
- Endocannabinoid Research Group, Department of Cancer Studies & Molecular Medicine, University of Leicester, Leicester, United Kingdom
| | - Joseph Onwude
- Ramsay Springfield Hospital, Chelmsford, United Kingdom
| | - Richard Hiscock
- Department of Anaesthesia, Mercy Hospital for Women, Heidelberg, Victoria, Australia
| | - Justin Konje
- Endocannabinoid Research Group, Department of Cancer Studies & Molecular Medicine, University of Leicester, Leicester, United Kingdom
| | - Stephen Tong
- Translational Obstetrics Group, Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, Heidelberg, Victoria, Australia
- * E-mail:
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Minten MA, Bilby TR, Bruno RGS, Allen CC, Madsen CA, Wang Z, Sawyer JE, Tibary A, Neibergs HL, Geary TW, Bauersachs S, Spencer TE. Effects of fertility on gene expression and function of the bovine endometrium. PLoS One 2013; 8:e69444. [PMID: 23940519 PMCID: PMC3734181 DOI: 10.1371/journal.pone.0069444] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 06/08/2013] [Indexed: 12/03/2022] Open
Abstract
Infertility and subfertility are important and pervasive reproductive problems in both domestic animals and humans. The majority of embryonic loss occurs during the first three weeks of pregnancy in cattle and women due, in part, to inadequate endometrial receptivity for support of embryo implantation. To identify heifers of contrasting fertility, serial rounds of artificial insemination (AI) were conducted in 201 synchronized crossbred beef heifers. The heifers were then fertility classified based on number of pregnancies detected on day 35 in four AI opportunities. Heifers, classified as having high fertility, subfertility or infertility, were selected for further study. The fertility-classified heifers were superovulated and flushed, and the recovered embryos were graded and then transferred to synchronized recipients. Quantity of embryos recovered per flush, embryo quality, and subsequent recipient pregnancy rates did not differ by fertility classification. Two in vivo-produced bovine embryos (stage 4 or 5, grade 1 or 2) were then transferred into each heifer on day 7 post-estrus. Pregnancy rates were greater in high fertility than lower fertility heifers when heifers were used as embryo recipients. The reproductive tracts of the classified heifers were obtained on day 14 of the estrous cycle. No obvious morphological differences in reproductive tract structures and histology of the uterus were observed in the heifers. Microarray analysis revealed differences in the endometrial transcriptome based on fertility classification. A genome-wide association study, based on SNP genotyping, detected 7 moderate associations with fertility across 6 different chromosomes. Collectively, these studies support the idea that innate differences in uterine function underlie fertility and early pregnancy loss in ruminants. Cattle with defined early pregnancy success or loss is useful to elucidate the complex biological and genetic mechanisms governing endometrial receptivity and uterine competency for pregnancy.
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Affiliation(s)
- Megan A Minten
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
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Roles of Integrins and Intracellular Molecules in the Migration and Neuritogenesis of Fetal Cortical Neurons: MEK Regulates Only the Neuritogenesis. NEUROSCIENCE JOURNAL 2013; 2013:859257. [PMID: 26317102 PMCID: PMC4437273 DOI: 10.1155/2013/859257] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 12/16/2012] [Indexed: 11/24/2022]
Abstract
The roles of integrin subunits and intracellular molecules in regulating the migration and neuritogenesis of neurons isolated from 16.5 gestation days rat fetal cortices were examined using in vitro assays.
Results showed that laminin supported the migration of fetal cortical neurons better than fibronectin and that the fetal cortical neurons migrated on laminin using β1 and α3 integrin subunits which make up the α3β1 integrin receptor. On fibronectin, the migration was mediated by β1 integrin subunit. Perturbation of src kinase, phospholipase C, or protein kinase C activity, inhibition of IP3 receptor mediated calcium release, or chelation of intracellular calcium inhibited both migration and neuritogenesis, whereas inhibition of growth factor signaling via MEK inhibited only the neuritogenesis. The detection of α1 and α9 transcripts suggested that the migration of fetal cortical neurons may also be mediated by α1β1 and α9β1 integrin receptors.
Results showed that calcium may regulate migration and neuritogenesis by maintaining optimum levels of microtubules in the fetal cortical neurons.
It is concluded that the fetal cortical neurons are fully equipped with the integrin signaling cascade required for their migration and neuritogenesis, whereas crosstalk between the integrin and growth-factor signaling regulate only the neuritogenesis.
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O’Kusky J, Ye P. Neurodevelopmental effects of insulin-like growth factor signaling. Front Neuroendocrinol 2012; 33:230-51. [PMID: 22710100 PMCID: PMC3677055 DOI: 10.1016/j.yfrne.2012.06.002] [Citation(s) in RCA: 139] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 05/09/2012] [Accepted: 06/07/2012] [Indexed: 11/28/2022]
Abstract
Insulin-like growth factor (IGF) signaling greatly impacts the development and growth of the central nervous system (CNS). IGF-I and IGF-II, two ligands of the IGF system, exert a wide variety of actions both during development and in adulthood, promoting the survival and proliferation of neural cells. The IGFs also influence the growth and maturation of neural cells, augmenting dendritic growth and spine formation, axon outgrowth, synaptogenesis, and myelination. Specific IGF actions, however, likely depend on cell type, developmental stage, and local microenvironmental milieu within the brain. Emerging research also indicates that alterations in IGF signaling likely contribute to the pathogenesis of some neurological disorders. This review summarizes experimental studies and shed light on the critical roles of IGF signaling, as well as its mechanisms, during CNS development.
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Affiliation(s)
- John O’Kusky
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V5Z 1M9
| | - Ping Ye
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
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Rajwani A, Ezzat V, Smith J, Yuldasheva NY, Duncan ER, Gage M, Cubbon RM, Kahn MB, Imrie H, Abbas A, Viswambharan H, Aziz A, Sukumar P, Vidal-Puig A, Sethi JK, Xuan S, Shah AM, Grant PJ, Porter KE, Kearney MT, Wheatcroft SB. Increasing circulating IGFBP1 levels improves insulin sensitivity, promotes nitric oxide production, lowers blood pressure, and protects against atherosclerosis. Diabetes 2012; 61:915-24. [PMID: 22357965 PMCID: PMC3314358 DOI: 10.2337/db11-0963] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 12/29/2011] [Indexed: 12/02/2022]
Abstract
Low concentrations of insulin-like growth factor (IGF) binding protein-1 (IGFBP1) are associated with insulin resistance, diabetes, and cardiovascular disease. We investigated whether increasing IGFBP1 levels can prevent the development of these disorders. Metabolic and vascular phenotype were examined in response to human IGFBP1 overexpression in mice with diet-induced obesity, mice heterozygous for deletion of insulin receptors (IR(+/-)), and ApoE(-/-) mice. Direct effects of human (h)IGFBP1 on nitric oxide (NO) generation and cellular signaling were studied in isolated vessels and in human endothelial cells. IGFBP1 circulating levels were markedly suppressed in dietary-induced obese mice. Overexpression of hIGFBP1 in obese mice reduced blood pressure, improved insulin sensitivity, and increased insulin-stimulated NO generation. In nonobese IR(+/-) mice, overexpression of hIGFBP1 reduced blood pressure and improved insulin-stimulated NO generation. hIGFBP1 induced vasodilatation independently of IGF and increased endothelial NO synthase (eNOS) activity in arterial segments ex vivo, while in endothelial cells, hIGFBP1 increased eNOS Ser(1177) phosphorylation via phosphatidylinositol 3-kinase signaling. Finally, in ApoE(-/-) mice, overexpression of hIGFBP1 reduced atherosclerosis. These favorable effects of hIGFBP1 on insulin sensitivity, blood pressure, NO production, and atherosclerosis suggest that increasing IGFBP1 concentration may be a novel approach to prevent cardiovascular disease in the setting of insulin resistance and diabetes.
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Affiliation(s)
- Adil Rajwani
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Vivienne Ezzat
- Department of Cardiology, Cardiovascular Division, Kings College London British Heart Foundation Centre of Excellence, London, U.K
| | - Jessica Smith
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Nadira Y. Yuldasheva
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Edward R. Duncan
- Department of Cardiology, Cardiovascular Division, Kings College London British Heart Foundation Centre of Excellence, London, U.K
| | - Matthew Gage
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Richard M. Cubbon
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Matthew B. Kahn
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Helen Imrie
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Afroze Abbas
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Hema Viswambharan
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Amir Aziz
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Piruthivi Sukumar
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Antonio Vidal-Puig
- Department of Clinical Biochemistry, University of Cambridge, Cambridge, U.K
| | - Jaswinder K. Sethi
- Department of Clinical Biochemistry, University of Cambridge, Cambridge, U.K
| | - Shouhong Xuan
- Department of Genetics and Development, Columbia University Medical Center, New York, New York
| | - Ajay M. Shah
- Department of Cardiology, Cardiovascular Division, Kings College London British Heart Foundation Centre of Excellence, London, U.K
| | - Peter J. Grant
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Karen E. Porter
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Mark T. Kearney
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
| | - Stephen B. Wheatcroft
- Division of Cardiovascular and Diabetes Research, Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, U.K
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Güllü G, Karabulut S, Akkiprik M. Functional roles and clinical values of insulin-like growth factor-binding protein-5 in different types of cancers. CHINESE JOURNAL OF CANCER 2012; 31:266-80. [PMID: 22313597 PMCID: PMC3777492 DOI: 10.5732/cjc.011.10405] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Insulin-like growth factor-binding proteins (IGFBPs) are critical regulators of the mitogenic activity of insulin-like growth factors (IGFs). IGFBP5, one of these IGFBPs, has special structural features, including a nuclear transport domain, heparin-binding motif, and IGF/extracellular matrix/acid-labile subunit-binding sites. Furthermore, IGFBP5 has several functional effects on carcinogenesis and even normal cell processes, such as cell growth, death, motility, and tissue remodeling. These biological effects are sometimes related with IGF (IGF-dependent effects) and sometimes not (IGF-independent effects). The functional role of IGFBP5 is most likely determined in a cell-type and tissue-type specific manner but also depends on cell context, especially in terms of the diversity of interacting proteins and the potential for nuclear localization. Clinical findings show that IGFBP5 has the potential to be a useful clinical biomarker for predicting response to therapy and clinical outcome of cancer patients. In this review, we summarize the functional diversity and clinical importance of IGFBP5 in different types of cancers.
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Affiliation(s)
- Gökçe Güllü
- Department of Medical Biology, School of Medicine, DMarmara University, Istanbul 34468, Turkey
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Forbes BE, McCarthy P, Norton RS. Insulin-like growth factor binding proteins: a structural perspective. Front Endocrinol (Lausanne) 2012; 3:38. [PMID: 22654863 PMCID: PMC3356058 DOI: 10.3389/fendo.2012.00038] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Accepted: 02/16/2012] [Indexed: 11/13/2022] Open
Abstract
Insulin-like growth factor binding proteins (IGFBP-1 to -6) bind insulin-like growth factors-I and -II (IGF-I and IGF-II) with high affinity. These binding proteins maintain IGFs in the circulation and direct them to target tissues, where they promote cell growth, proliferation, differentiation, and survival via the type 1 IGF receptor. IGFBPs also interact with many other molecules, which not only influence their modulation of IGF action but also mediate IGF-independent activities that regulate processes such as cell migration and apoptosis by modulating gene transcription. IGFBPs-1 to -6 are structurally similar proteins consisting of three distinct domains, N-terminal, linker, and C-terminal. There have been major advances in our understanding of IGFBP structure in the last decade and a half. While there is still no structure of an intact IGFBP, several structures of individual N- and C-domains have been solved. The structure of a complex of N-BP-4:IGF-I:C-BP-4 has also been solved, providing a detailed picture of the structural features of the IGF binding site and the mechanism of binding. Structural studies have also identified features important for interaction with extracellular matrix components and integrins. This review summarizes structural studies reported so far and highlights features important for binding not only IGF but also other partners. We also highlight future directions in which structural studies will add to our knowledge of the role played by the IGFBP family in normal growth and development, as well as in disease.
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Affiliation(s)
- Briony E Forbes
- The School of Molecular and Biomedical Science, The University of Adelaide Adelaide, SA, Australia
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Anton L, Brown AG, Parry S, Elovitz MA. Lipopolysaccharide induces cytokine production and decreases extravillous trophoblast invasion through a mitogen-activated protein kinase-mediated pathway: possible mechanisms of first trimester placental dysfunction. Hum Reprod 2011; 27:61-72. [PMID: 22052387 DOI: 10.1093/humrep/der362] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Defects in extravillous trophoblast (EVT) function could contribute to placental dysfunction resulting in adverse obstetrical outcomes. Adverse obstetrical outcomes have been highly correlated with intrauterine infection; however, the mechanisms linking infection to placental dysfunction remain unclear. We investigated the effects of inflammation on EVT cytokine production and invasion early in pregnancy and determined the cell signaling pathways mediating this response. METHODS AND RESULTS In our model of inflammation, EVT cells, isolated following first trimester pregnancy terminations (n= 6) were stimulated with lipopolysaccharide (LPS). LPS induced a dose-dependent increase in interleukin (IL)-8 and IL-6 protein production (P < 0.01) and decreased EVT invasion (P = 0.01) versus control. The LPS-mediated changes in cytokine production (P < 0.001) and invasion (P < 0.001) were reversed by dexamethasone (DEX). Exposure to LPS resulted in an increase in mitogen-activated protein kinase (MAPK) signaling pathway phosphorylation, including p44/42 MAPK (P < 0.01), p38 MAPK (P < 0.05), MAPK extracellular signal-regulated kinase 1/2 (MEK1/2) (P< 0.01) and stress-activated protein kinase/c-Jun N-terminal kinase (JNK; P < 0.001), which was reversed by DEX (P < 0.05) for all MAPKs except p38. MAPK-specific inhibitors to MEK1/2 (U0126), p38 MAPK (SB 202190) and JNK (SP 600125) significantly reversed the LPS-mediated increase in IL-6 (P < 0.001) and IL-8 (P < 0.001) production. While U0126 reversed the LPS-induced decrease in EVT invasion (P < 0.001), SB 202190 (P < 0.001) and SP 600125 (P< 0.001) decreased EVT invasion, further indicating that MEK1/2 phosphorylation may be inflammation dependent while p38 MAPK and JNK phosphorylation occurs independently of an inflammatory stimulus. CONCLUSIONS LPS increased IL-8 and IL-6 and decreased EVT invasion through activation of MAPK signaling. MEK1/2 activation may contribute to placental dysfunction, in the setting of inflammation-associated adverse obstetrical outcomes.
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Affiliation(s)
- Lauren Anton
- Maternal and Child Health Research Program, Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Kamrava M, Gius D, Casagrande G, Kohn E. Will targeting insulin growth factor help us or hurt us?: An oncologist's perspective. Ageing Res Rev 2011; 10:62-70. [PMID: 19896561 PMCID: PMC2888889 DOI: 10.1016/j.arr.2009.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 10/22/2009] [Accepted: 10/28/2009] [Indexed: 12/17/2022]
Abstract
The insulin/insulin growth factor (IGF) pathway is a critical mediator of longevity and aging. Efforts to extend longevity by altering the insulin/IGF pathway may have varying effects on other physiological processes. Reduced insulin/IGF levels may decrease the incidence of certain cancers as well as the risk of developing metastatic disease. However, it may also increase the risk of developing cardiovascular disease as well as cardiovascular related mortality. Pursuing the right insulin/IGF pathway targets will require striking a balance between inhibiting cancer cell development and progression and avoiding damage to tissues under normal insulin/IGF-mediated control. This review will discuss the roles of the insulin/IGF pathway in aging and longevity and the development of cancer cell metastasis and considerations in taking insulin/IGF directed targets to the oncology clinic.
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Affiliation(s)
- Mitchell Kamrava
- Molecular Radiation Oncology Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute
| | - David Gius
- Molecular Radiation Oncology Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute
| | - Giovanna Casagrande
- Medical Oncology Branch, Center for Cancer Research, National Cancer Institute
| | - Elise Kohn
- Medical Oncology Branch, Center for Cancer Research, National Cancer Institute
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Knöfler M. Critical growth factors and signalling pathways controlling human trophoblast invasion. THE INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY 2010; 54:269-80. [PMID: 19876833 DOI: 10.1387/ijdb.082769mk] [Citation(s) in RCA: 233] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Invasion of placental trophoblasts into uterine tissue and vessels is an essential process of human pregnancy and fetal development. Due to their remarkable plasticity invasive trophoblasts fulfil numerous functions, i.e. anchorage of the placenta, secretion of hormones, modulation of decidual angiogenesis/lymphangiogenesis and remodelling of maternal spiral arteries. The latter is required to increase blood flow to the placenta, thereby ensuring appropriate transfer of nutrients and oxygen to the developing fetus. Since failures in vascular changes of the placental bed are associated with pregnancy diseases such as preeclampsia or intrauterine growth restriction, basic research in this particular field focuses on molecular mechanisms controlling trophoblast invasion under physiological and pathological conditions. Throughout the years, an increasing number of growth factors, cytokines and angiogenic molecules controlling trophoblast motility have been identified. These factors are secreted from numerous cells such as trophoblast, maternal epithelial and stromal cells, as well as uterine NK cells and macrophages, suggesting that a complex network of cell types, mediators and signalling pathways regulates trophoblast invasiveness. Whereas essential features of the invasive trophoblast such as expression of critical proteases and adhesion molecules have been well characterised, the interplay between different cell types and growth factors and the cross-talk between distinct signalling cascades remain largely elusive. Similarly, key-regulatory transcription factors committing and differentiating invasive trophoblasts are mostly unknown. This review will summarise our current understanding of growth factors and signal transduction pathways regulating human trophoblast invasion/migration, as well as give insights into novel mechanisms involved in the particular differentiation process.
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Affiliation(s)
- Martin Knöfler
- Department of Obstetrics and Fetal-Maternal Medicine, Reproductive Biology Unit, Medical University of Vienna, Vienna, Austria.
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Jessmon P, Kilburn BA, Romero R, Leach RE, Armant DR. Function-specific intracellular signaling pathways downstream of heparin-binding EGF-like growth factor utilized by human trophoblasts. Biol Reprod 2010; 82:921-9. [PMID: 20130271 DOI: 10.1095/biolreprod.109.082305] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Heparin-binding EGF-like growth factor (HBEGF) is expressed by trophoblast cells throughout gestation. First-trimester cytotrophoblast cells are protected from hypoxia-induced apoptosis because of the accumulation of HBEGF through a posttranscriptional autocrine mechanism. Exogenous application of HBEGF is cytoprotective in a hypoxia/reoxygenation (H/R) injury model and initiates trophoblast extravillous differentiation to an invasive phenotype. The downstream signaling pathways induced by HBEGF that mediate these various cellular activities were identified using two human first-trimester cytotrophoblast cell lines, HTR-8/SVneo and SW.71, with similar results. Recombinant HBEGF (1 nM) induced transient phosphorylation of MAPK3/1 (ERK), MAPK14 (p38), and AKT within 15 min and JNK after 1-2 h. To determine which downstream pathways regulate the various functions of HBEGF, cells were treated with specific inhibitors of the ERK upstream regulator MEK (U0126), the AKT upstream regulator phosphoinositide-3 (PI3)-kinase (LY294002), MAPK14 (SB203580), and JNK (SP600125), as well as with inactive structural analogues. Only SB203580 specifically prevented HBEGF-mediated rescue during H/R, while each inhibitor attenuated HBEGF-stimulated cell migration. Accumulation of HBEGF at reduced oxygen was blocked only by a combination of U0126, SB203580, and SP600125. We conclude that HBEGF advances trophoblast extravillous differentiation through coordinate activation of PI3 kinase, ERK, MAPK14, and JNK, while only MAPK14 is required for its antiapoptotic activity. Additionally, hypoxia induces an autocrine increase in HBEGF protein levels through MAPK14, JNK or ERK. These experiments reveal a complexity of the intracellular signaling circuitry that regulates trophoblast functions critical for implantation and placentation.
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Affiliation(s)
- Philip Jessmon
- Departments of Obstetrics and Gynecology and Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, Michigan 48201-1405, USA
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Schulz LC, Widmaier EP, Qiu J, Roberts RM. Effect of leptin on mouse trophoblast giant cells. Biol Reprod 2009; 80:415-24. [PMID: 19038858 PMCID: PMC2805391 DOI: 10.1095/biolreprod.108.073130] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 09/08/2008] [Accepted: 10/20/2008] [Indexed: 01/29/2023] Open
Abstract
Leptin plays a role in both energy homeostasis and reproduction, and it is required in early pregnancy. It stimulates metalloproteinase activity in cultured human trophoblasts and invasiveness of cultured mouse trophoblasts. Our goal has been to examine mechanisms that underpin the ability of leptin to promote trophoblast invasiveness in primary cultures of mouse trophoblasts. Leptin stimulated the phosphorylation of MEK (MAP2K1) but not signal transducer and activator of transcription 3 (STAT3) in the cultures, increased the concentration of the suppressor of cytokine signaling 3 (SOCS3) protein, and upregulated metalloproteinase activity. Microarray analysis revealed that leptin stimulated select genes with roles in cell motility, including Stmn, a gene linked to invasiveness in other cell types. There was also an increase in activity of several genes associated with MAPK and RhoGTPase signaling. In addition, leptin muted expression of genes correlated with terminal differentiation of trophoblast giant cells, including ones associated with the TGFbeta signaling pathway and endoreduplication of DNA, and upregulated selected prolactin-related family members. Feulgen staining of leptin-treated cells revealed a loss of cells with low ploidy. The data suggest that leptin accelerates disappearance of non-giant cells while inhibiting terminal differentiation of committed giant cells, possibly by maintaining cells in an intermediate stage of differentiation.
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Affiliation(s)
- L C Schulz
- Division of Animal Sciences, University of Missouri, Columbia, Missouri 65211, USA.
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Epithelial Cell Gene Expression Induced by Intracellular Staphylococcus aureus. Int J Microbiol 2009; 2009:753278. [PMID: 20016671 PMCID: PMC2775199 DOI: 10.1155/2009/753278] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2008] [Accepted: 11/14/2008] [Indexed: 11/17/2022] Open
Abstract
HEp-2 cell monolayers were cocultured with intracellular Staphylococcus aureus, and changes in gene expression were profiled using DNA microarrays. Intracellular S. aureus affected genes involved in cellular stress responses, signal transduction, inflammation, apoptosis, fibrosis, and cholesterol biosynthesis. Transcription of stress response and signal transduction-related genes including atf3, sgk, map2k1, map2k3, arhb, and arhe was increased. In addition, elevated transcription of proinflammatory genes was observed for tnfa, il1b, il6, il8, cxcl1, ccl20, cox2, and pai1. Genes involved in proapoptosis and fibrosis were also affected at transcriptional level by intracellular S. aureus. Notably, intracellular S. aureus induced strong transcriptional down-regulation of several cholesterol biosynthesis genes. These results suggest that epithelial cells respond to intracellular S. aureus by inducing genes affecting immunity and in repairing damage caused by the organism, and are consistent with the possibility that the organism exploits an intracellular environment to subvert host immunity and promote colonization.
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Fleming SD, Fazleabas AT, Bell SC. Differential regulation of insulin-like growth factor binding protein-1 and -2 by insulin in the baboon (Papio anubis) endometrium. Reprod Biol Endocrinol 2008; 6:6. [PMID: 18234122 PMCID: PMC2254421 DOI: 10.1186/1477-7827-6-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2007] [Accepted: 01/31/2008] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The purpose of this study was to examine the effect of insulin on expression and synthesis of IGFBP-1 and IGFBP-2 in the baboon endometrium in vitro. METHODS Baboon endometrial explants collected from cycling, ovariectomized, steroid-treated, simulated-pregnant and pregnant animals were cultured for 48 h in the presence or absence of insulin, with or without estradiol, progesterone and hCG. RESULTS Insulin clearly inhibited IGFBP-1 production and mRNA expression in a time- and dose-dependent manner, whereas IGFBP-2 synthesis was not significantly affected. The inhibitory effects of insulin on IGFBP-1 were more evident in explants of non-pregnant tissue or tissue away from the implantation site. In the absence of insulin, synthesis of IGFBP-1 was induced in explants with low levels of de novo synthesis whereas IGFBP-2 synthesis was inhibited. This effect was potentiated by steroids and hCG in the explant cultures. CONCLUSION Insulin differentially regulates endometrial IGFBP-1 and IGFBP-2 secretion in the baboon.
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Affiliation(s)
- Steven D Fleming
- Department of Obstetrics and Gynaecology, University of Sydney, NSW 2145, Australia
| | - Asgerally T Fazleabas
- Department of Obstetrics and Gynecology (MC808), College of Medicine, University of Illinois at Chicago, Illinois 60612-9998, USA
| | - Stephen C Bell
- Department of Obstetrics and Gynaecology, University of Leicester, Leicestershire LE2 7LE, UK
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Yae K, Keng VW, Koike M, Yusa K, Kouno M, Uno Y, Kondoh G, Gotow T, Uchiyama Y, Horie K, Takeda J. Sleeping beauty transposon-based phenotypic analysis of mice: lack of Arpc3 results in defective trophoblast outgrowth. Mol Cell Biol 2006; 26:6185-96. [PMID: 16880528 PMCID: PMC1592801 DOI: 10.1128/mcb.00018-06] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The Sleeping Beauty (SB) transposon system has generated many transposon-insertional mutant mouse lines, some of which have resulted in embryonic lethality when bred to homozygosity. Here we report one such insertion mapped to the mouse actin-related protein complex subunit 3 gene (Arpc3). Arpc3 is a component of the Arp2/3 complex, which plays a major role in actin nucleation with Y-shaped branching from the mother actin filament in response to migration signaling. Arpc3 transposon-inserted mutants developed only to the blastocyst stage. In vitro blastocyst culture of Arpc3 mutants exhibited severe spreading impairment of trophoblasts. This phenotype was also observed in compound heterozygotes generated using conventional gene-targeted and transposon-inserted alleles. Arpc3-deficient mutants were shown to lack actin-rich structures in the spreading trophoblast. Electron microscopic analysis demonstrated the lack of mesh-like structures at the cell periphery, suggesting a role of Arpc3 in Y-shaped branching formation. These data indicate the importance of Arpc3 in the Arp2/3 complex for trophoblast outgrowth and suggest that Arpc3 may be indispensable for implantation.
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Affiliation(s)
- Kojiro Yae
- Department of Social and Environmental Medicine H3, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Zhang W, Wang H, Song SW, Fuller GN. Insulin-like growth factor binding protein 2: gene expression microarrays and the hypothesis-generation paradigm. Brain Pathol 2006; 12:87-94. [PMID: 11770904 PMCID: PMC8095777 DOI: 10.1111/j.1750-3639.2002.tb00425.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
A major goal of modern medicine is to identify key genes and their products that are altered in the diseased state and to elucidate the molecular mechanisms underlying disease development, progression, and resistance to therapy. This is a daunting task given the exceptionally high complexity of the human genome. The paradigm for research has historically been hypothesis-driven despite the fact that the hypotheses under scrutiny often rest on tenuous subjective grounds or are derived from and dependent on chance observation. The imminent deciphering of the complete human genome, coupled with recent advances in high-throughput bioanalytical technology, has made possible a new paradigm in which data-based hypothesis-generation is the initial step in the investigative process, followed by hypothesis-testing. Genomics technologies are the primary source of the new hypothesis-generating capabilities that are now empowering biomedical researchers. The synergistic interaction between contemporary genomics technologies and the hypothesis-generation paradigm is well-illustrated by the discovery and subsequent ongoing study of the role of insulin-like growth factor binding protein 2 (IGFBP2) in human glioma biology. Using gene expression microarray technology, the IGFBP2 gene was recently found to be highly and differentially overexpressed in the most advanced grade of human glioma, glioblastoma. Based on this discovery, subsequent functional studies were initiated that suggest that IGFBP2 overexpression may contribute to the invasive nature of glioblastoma, and that IGFBP2 may exert its function via a newly identified novel binding protein. The IGFBP2 story is but one example of the power and potential of the new molecular methodologies that are transforming modern diagnostic and investigative neuropathology.
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Affiliation(s)
- Wei Zhang
- Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston 77030, USA.
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Canzian F, McKay JD, Cleveland RJ, Dossus L, Biessy C, Rinaldi S, Landi S, Boillot C, Monnier S, Chajès V, Clavel-Chapelon F, Téhard B, Chang-Claude J, Linseisen J, Lahmann PH, Pischon T, Trichopoulos D, Trichopoulou A, Zilis D, Palli D, Tumino R, Vineis P, Berrino F, Bueno-de-Mesquita HB, van Gils CH, Peeters PHM, Pera G, Ardanaz E, Chirlaque MD, Quirós JR, Larrañaga N, Martínez-García C, Allen NE, Key TJ, Bingham SA, Khaw KT, Slimani N, Norat T, Riboli E, Kaaks R. Polymorphisms of genes coding for insulin-like growth factor 1 and its major binding proteins, circulating levels of IGF-I and IGFBP-3 and breast cancer risk: results from the EPIC study. Br J Cancer 2006; 94:299-307. [PMID: 16404426 PMCID: PMC2361124 DOI: 10.1038/sj.bjc.6602936] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Insulin-like growth factor I (IGF-I) stimulates cell proliferation and can enhance the development of tumours in different organs. Epidemiological studies have shown that an elevated level of circulating IGF-I is associated with increased risk of breast cancer, as well as of other cancers. Most of circulating IGF-I is bound to an acid-labile subunit and to one of six insulin-like growth factor binding proteins (IGFBPs), among which the most important are IGFBP-3 and IGFBP-1. Polymorphisms of the IGF1 gene and of genes encoding for the major IGF-I carriers may predict circulating levels of IGF-I and have an impact on cancer risk. We tested this hypothesis with a case–control study of 807 breast cancer patients and 1588 matched control subjects, nested within the European Prospective Investigation into Cancer and Nutrition. We genotyped 23 common single nucleotide polymorphisms in IGF1, IGFBP1, IGFBP3 and IGFALS, and measured serum levels of IGF-I and IGFBP-3 in samples of cases and controls. We found a weak but significant association of polymorphisms at the 5′ end of the IGF1 gene with breast cancer risk, particularly among women younger than 55 years, and a strong association of polymorphisms located in the 5′ end of IGFBP3 with circulating levels of IGFBP-3, which confirms previous findings. Common genetic variation in these candidate genes does not play a major role in altering breast cancer risk in Caucasians.
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Affiliation(s)
- F Canzian
- International Agency for Research on Cancer, Lyon, France
| | - J D McKay
- International Agency for Research on Cancer, Lyon, France
| | - R J Cleveland
- International Agency for Research on Cancer, Lyon, France
| | - L Dossus
- International Agency for Research on Cancer, Lyon, France
| | - C Biessy
- International Agency for Research on Cancer, Lyon, France
| | - S Rinaldi
- International Agency for Research on Cancer, Lyon, France
| | - S Landi
- International Agency for Research on Cancer, Lyon, France
| | - C Boillot
- International Agency for Research on Cancer, Lyon, France
| | - S Monnier
- International Agency for Research on Cancer, Lyon, France
| | - V Chajès
- Institut Gustave Roussy, Villejuif, France
| | | | - B Téhard
- Institut Gustave Roussy, Villejuif, France
| | | | - J Linseisen
- German Cancer Research Centre, Heidelberg, Germany
| | - P H Lahmann
- German Institute of Human Nutrition, Potsdam, Germany
| | - T Pischon
- German Institute of Human Nutrition, Potsdam, Germany
| | | | | | - D Zilis
- University of Athens Medical School, Athens, Greece
| | - D Palli
- CSPO-Scientific Institute of Tuscany, Florence, Italy
| | - R Tumino
- Cancer Registry, Azienda Ospedaliera ‘Civile MP Arezzo’, Ragusa, Italy
| | - P Vineis
- Imperial College, London, UK
- University of Torino, Turin, Italy
| | - F Berrino
- National Cancer Institute, Milan, Italy
| | | | - C H van Gils
- Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands
| | - P H M Peeters
- Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands
| | - G Pera
- Catalan Institute of Oncology, Barcelona, Spain
| | - E Ardanaz
- Instituto de Salud Pública, SNS-O, Pamplona, Spain
| | - M-D Chirlaque
- Epidemiology Department, Murcia Health Council, Spain
| | - J R Quirós
- Public Health Directorate, Consejería de Sanidad y Servicios Sociales de Asturias, Oviedo, Spain
| | - N Larrañaga
- Public Health Division of Gipuzkoa, Health Department of the Basque Country, San Sebastián, Spain
| | | | - N E Allen
- Cancer Research UK, Epidemiology Unit, University of Oxford, Oxford, UK
| | - T J Key
- Cancer Research UK, Epidemiology Unit, University of Oxford, Oxford, UK
| | - S A Bingham
- MRC Dunn Human Nutrition Unit, Welcome Trust/MRC Building, Cambridge, UK
| | - K-T Khaw
- Clinical Gerontology Unit, Addenbrooke's Hospital, Cambridge, UK
| | - N Slimani
- International Agency for Research on Cancer, Lyon, France
| | - T Norat
- International Agency for Research on Cancer, Lyon, France
| | - E Riboli
- International Agency for Research on Cancer, Lyon, France
| | - R Kaaks
- International Agency for Research on Cancer, Lyon, France
- Hormones and Cancer Team, International Agency for Research on Cancer, 150, cours Albert-Thomas, F-69372 Lyon, France; E-mail:
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Daoud G, Rassart E, Masse A, Lafond J. Src family kinases play multiple roles in differentiation of trophoblasts from human term placenta. J Physiol 2006; 571:537-53. [PMID: 16410281 PMCID: PMC1805791 DOI: 10.1113/jphysiol.2005.102285] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Tyrosine phosphorylation plays a major role in controlling many biological processes in different cell types. Src family kinases (SFKs) are one of the most studied groups of tyrosine kinases and can mediate a variety of signalling pathways. However, little is known about the expression of SFKs in human term placenta and their implication in trophoblast differentiation. Therefore, we examined the expression profile of SFK members over time in culture and their implication in differentiation. In vitro, freshly isolated cytotrophoblast cells, cultured in 10% fetal bovine serum (FBS), spontaneously aggregate and fuse to form multinucleated cells that resemble phenotypically mature syncytiotrophoblasts, that concomitantly produce human chorionic gonadotropin (hCG) and human placental lactogen (hPL). In this study, we showed that trophoblasts expressed all SFK members and some of them are expressed as different splice variants. Moreover, using real-time PCR, this study showed two different expression profiles of SFKs in human trophoblasts during culture. In addition, the protein level and phosphorylation status of Src were evaluated using specific antibodies. Src was rapidly phosphorylated at Tyr-416 and dephosphorylated at Tyr-527 after FBS addition. Surprisingly, inhibition of SFKs by 4-amino-5-(4-chlorophenyl)-7-(t-butyl) pyrazolo[3,4-d] pyrimidine (PP2) or herbimycin A had different effects on trophoblast differentiation. While herbimycin A inhibited morphological and hormonal differentiation, PP2 stimulated hormonal differentiation and inhibited cell adhesion and spreading with no effect on cell fusion. In summary, this study showed that SFKs play different roles in trophoblast differentiation, probably depending on SFK members activated. Thus, this study increases our knowledge and understanding of pathology related to impaired trophoblast differentiation such as pre-eclampsia and trophoblast neoplasm.
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Affiliation(s)
- Georges Daoud
- Laboratoire de Physiologie materno-foetale, Département des Sciences Biologiques, Université du Québec à Montréal, C.P. 8888, Succursale Centre-ville, Montréal, Canada, H3C 3P8
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48
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Govoni KE, Baylink DJ, Mohan S. The multi-functional role of insulin-like growth factor binding proteins in bone. Pediatr Nephrol 2005; 20:261-8. [PMID: 15549410 PMCID: PMC2923924 DOI: 10.1007/s00467-004-1658-y] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2004] [Revised: 07/23/2004] [Accepted: 07/27/2004] [Indexed: 01/09/2023]
Abstract
The insulin-like growth factor (IGF) system is an important regulator of bone formation. The IGFs (IGF-I and IGF-II) are the most abundant growth factors produced by bone, and are regulated by their six high affinity binding proteins (IGFBPs). The IGFBPs are produced by osteoblasts and are responsible for transporting the IGFs and extending their half-lives. In general, IGFBP-1, -2, -4, and -6 inhibit and IGFBP-3 and -5 stimulate osteoblast function. IGFBP-4 and -5 are the most abundant IGFBPs produced by osteoblasts, and therefore they are the primary focus of this review. IGFBP-5 is an important stimulator of bone formation and may also function independently of IGFs. IGFBP-4 inhibits osteoblast function by sequestering IGF and preventing it from binding to its receptor. This review focuses on the specific IGF-dependent and IGF-independent roles of the IGFBPs in bone formation, as well as their potential mechanisms of action. In addition, discussion of the regulation of the IGFBPs by post-translational modification (i.e., proteolysis) has been included. Studies on the regulation of production and actions of IGFBPs suggest that the IGFBP system in bone is pleiotropic and capable of serving multiple effector inputs from systemic and local sources.
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Affiliation(s)
- Kristen E. Govoni
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center, 11201 Benton Street, Loma Linda, CA 92357, USA. Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - David J. Baylink
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center, 11201 Benton Street, Loma Linda, CA 92357, USA. Department of Biochemistry, Loma Linda University, Loma Linda, California, USA
| | - Subburaman Mohan
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center, 11201 Benton Street, Loma Linda, CA 92357, USA, Tel.: +1-909-8257084 ext. 2932, Fax: +1-909-7961680. Departments of Medicine, Biochemistry and Physiology, Loma Linda University, Loma Linda, California, USA
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49
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Thirkill TL, Hendren SR, Soghomonians A, Mariano NF, Barakat AI, Douglas GC. Regulation of trophoblast beta1-integrin expression by contact with endothelial cells. Cell Commun Signal 2004; 2:4. [PMID: 15189562 PMCID: PMC434534 DOI: 10.1186/1478-811x-2-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2004] [Accepted: 06/09/2004] [Indexed: 11/15/2022] Open
Abstract
Background In human and non-human primates, migratory trophoblasts penetrate the uterine epithelium, invade uterine matrix, and enter the uterine vasculature. Invasive trophoblasts show increased expression of β1 integrin. Since trophoblast migration within the uterine vasculature involves trophoblast attachment to endothelial cells lining the vessel walls, this raises the possibility that cell-cell contact and/or factors released by endothelial cells could regulate trophoblast integrin expression. To test this, we used an in vitro system consisting of early gestation macaque trophoblasts co-cultured on top of uterine microvascular endothelial cells. Results When cultured alone, trophoblasts expressed low levels of β1 integrin as determined by quantitative immunofluorescence microscopy. When trophoblasts were cultured on top of endothelial cells for 24 h, the expression of trophoblast β1 integrin was significantly increased as determined by image analysis. β1 Integrin expression was not increased when trophoblasts were cultured with endothelial cell-conditioned medium, suggesting that upregulation requires direct contact between trophoblasts and endothelial cells. To identify endothelial cell surface molecules responsible for induction of trophoblast integrin expression, trophoblasts were cultured in dishes coated with recombinant platelet endothelial cell adhesion molecule-1 (PECAM-1), intercellular adhesion molecule-1 (ICAM-1), or αVβ3 integrin. Trophoblast β1 integrin expression (assessed by immunofluorescence microscopy and Western blotting) was increased when PECAM-1 or αVβ3 integrin, but not ICAM-1, was used as substrate. Conclusions Direct contact between trophoblasts and endothelial cells increases the expression of trophoblast β1 integrin.
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Affiliation(s)
- Twanda L Thirkill
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California, Davis CA 95616, USA
| | - Sonia R Hendren
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California, Davis CA 95616, USA
| | - Arlen Soghomonians
- Department of Mechanical and Aeronautical Engineering, University of California, Davis CA 95616, USA
| | - Natalie F Mariano
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California, Davis CA 95616, USA
| | - Abdul I Barakat
- Department of Mechanical and Aeronautical Engineering, University of California, Davis CA 95616, USA
| | - Gordon C Douglas
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California, Davis CA 95616, USA
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50
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Kracklauer MP, Schmidt C, Sclabas GM. TGFbeta1 signaling via alphaVbeta6 integrin. Mol Cancer 2003; 2:28. [PMID: 12935295 PMCID: PMC184456 DOI: 10.1186/1476-4598-2-28] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2003] [Accepted: 08/07/2003] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Transforming growth factor beta1 (TGFbeta1) is a potent inhibitor of epithelial cell growth, thus playing an important role in tissue homeostasis. Most carcinoma cells exhibit a reduced sensitivity for TGFbeta1 mediated growth inhibition, suggesting TGFbeta1 participation in the development of these cancers. The tumor suppressor gene DPC4/SMAD4, which is frequently inactivated in carcinoma cells, has been described as a key player in TGFbeta1 mediated growth inhibition. However, some carcinoma cells lacking functional SMAD4 are sensitive to TGFbeta1 induced growth inhibition, thus requiring a SMAD4 independent TGFbeta1 pathway. RESULTS Here we report that mature TGFbeta1 is a ligand for the integrin alphaVbeta6, independent of the common integrin binding sequence motif RGD. After TGFbeta1 binds to alphaVbeta6 integrin, different signaling proteins are activated in TGFbeta1-sensitive carcinoma cells, but not in cells that are insensitive to TGFbeta1. Among others, interaction of TGFbeta1 with the alphaVbeta6 integrin resulted in an upregulation of the cell cycle inhibitors p21/WAF1 and p27 leading to growth inhibition in SMAD4 deleted as well as in SMAD4 wildtype carcinoma cells. CONCLUSIONS Our data provide support for the existence of an alternate TGFbeta1 signaling pathway that is independent of the known SMAD pathway. This alternate pathway involves alphaVbeta6 integrin and the Ras/MAP kinase pathway and does not employ an RGD motif in TGFbeta1-sensitive tumor cells. The combined action of these two pathways seems to be necessary to elicit a complete TGFbeta1 signal.
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Affiliation(s)
- Martin P Kracklauer
- Section of Molecular Cell and Developmental Biology, Institute for Cellular and Molecular Biology, The University of Texas at Austin, 1 University Station, A4800, 78712, Austin, TX, USA
| | - Christian Schmidt
- Department of Surgical Oncology and Molecular Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
| | - Guido M Sclabas
- Department of Surgical Oncology and Molecular Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
- Department of Visceral and Transplantation Surgery, The University of Bern, Inselspital, Bern, 3010, Switzerland
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