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Dutsch-Wicherek MM, Bączkowska M, Knafel A, Sadowski P, Gałązka K, Lew-Starowicz M. An analysis of placental chorionic villous and decidual basalis tissue immunoreactivity in patients after cesarean section due to a placenta accreta spectrum disorder and elective cesarean section followed by the depressed mood. J Obstet Gynaecol Res 2024; 50:55-64. [PMID: 37909688 DOI: 10.1111/jog.15821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 10/07/2023] [Indexed: 11/03/2023]
Abstract
An analysis of placental chorionic villous and decidual basalis tissue immunoreactivity in patients after cesarean section due to a placenta accreta spectrum disorder and elective cesarean section followed by a depressed mood. RESEARCH BACKGROUND Over the past few years, interest in investigating immune dysfunction in patients with psychiatric disorders has increased. B7-H4 is a molecule with immunosuppressive properties that seems to play a key role in establishing maternal tolerance against fetal antigens. The aim of this study was to compare the B7-H4 immunoreactivity levels in patients after cesarean section. METHODS Placental and decidual tissue samples were obtained from 49 women who delivered at Bielański Hospital in Warsaw between 2009 and 2015. Fifteen of the patients developed postpartum depression and 14 had a diagnosis of placenta accreta spectrum. The control group consisted of 20 healthy patients on whom cesarean section was performed due to breech presentation at term. RESULTS The highest levels of B7-H4 immunoreactivity were found in the placental chorionic villous and decidual basalis tissue samples of the patients who later developed postpartum depression, while the lowest levels were found in the samples of those patients with a placenta accreta spectrum disorder. The difference between the B7-H4 immunoreactivity levels of these two groups was statistically significant. The B7-H4 expression levels were statistically significantly higher in the women in the postpartum depression group than in the control group. CONCLUSION Postpartum depression follows a disturbance of the suppressive milieu responsible for rebalancing the maternal immune system after the initial cytotoxic activation during labor.
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Affiliation(s)
| | - Monika Bączkowska
- 2nd Department of Obstetrics and Gynecology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Anna Knafel
- 2nd Department of Obstetrics and Gynecology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Piotr Sadowski
- Department of Pathomorphology, Jagiellonian University Medical College, Krakow, Poland
| | - Krystyna Gałązka
- Department of Pathomorphology, Jagiellonian University Medical College, Krakow, Poland
| | - Michał Lew-Starowicz
- Department of Psychiatry, Centre of Postgraduate Medical Education, Warsaw, Poland
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2
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Bączkowska M, Dutsch-Wicherek MM, Przytuła E, Faryna J, Wojtyła C, Ali M, Knafel A, Ciebiera M. Expression of the Costimulatory Molecule B7-H4 in the Decidua and Placental Tissues in Patients with Placental Abruption. Biomedicines 2022; 10:biomedicines10040918. [PMID: 35453668 PMCID: PMC9033103 DOI: 10.3390/biomedicines10040918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 12/10/2022] Open
Abstract
B7 homolog 4 protein (B7-H4), a member of the B7 family, is a immunomodulatory membrane protein. The aim of the study was to evaluate the expression of this protein in the decidua and placental tissues in case of placental abruption (PA) compared to cases of retained placental tissue (RPT) and controls. Tissue samples were obtained from 47 patients with PA, 60 patients with RPT, and 41 healthy controls. The samples were stained for B7-H4 expression, analyzed by an expert pathologist, and a semi-quantitative scale was applied. A statistical analysis revealed that the expression of B7-H4 was significantly higher in the decidua in PA samples compared to samples from patients with RPT (p-value < 0.001) and healthy controls (p-value < 0.001). The expression of B7-H4 in the placental chorionic villus was significantly higher in PA samples in relation to samples from healthy controls (p-value < 0.001) but not in relation to RPT samples (p-value = 0.0853). This finding suggests that B7-H4 might play an important role in mechanisms restoring reproductive tract homeostasis. Further research is necessary in regard to the role of B7-H4 in PA.
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Affiliation(s)
- Monika Bączkowska
- Centre of Postgraduate Medical Education, Second Department of Obstetrics and Gynecology, 01-809 Warsaw, Poland; (M.B.); (A.K.)
| | | | - Ewa Przytuła
- Department of Pathology, Bielański Hospital, 01-809 Warsaw, Poland; (E.P.); (J.F.)
| | - Jan Faryna
- Department of Pathology, Bielański Hospital, 01-809 Warsaw, Poland; (E.P.); (J.F.)
| | - Cezary Wojtyła
- International Prevention Research Institute-Collaborating Centre, Calisia University, 62-800 Kalisz, Poland;
| | - Mohamed Ali
- Clinical Pharmacy Department, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt;
| | - Anna Knafel
- Centre of Postgraduate Medical Education, Second Department of Obstetrics and Gynecology, 01-809 Warsaw, Poland; (M.B.); (A.K.)
| | - Michał Ciebiera
- Centre of Postgraduate Medical Education, Second Department of Obstetrics and Gynecology, 01-809 Warsaw, Poland; (M.B.); (A.K.)
- Correspondence: ; Tel.: +48-607-155-177
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3
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Mach P, Köninger A, Reisch B, Kimmig R, Gellhaus A. Soluble PD-L1 and B7-H4 serum levels during the course of physiological pregnancy. Am J Reprod Immunol 2022; 87:e13519. [PMID: 34974633 DOI: 10.1111/aji.13519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/04/2021] [Accepted: 12/28/2021] [Indexed: 11/30/2022] Open
Abstract
PROBLEM The aim of this study was to evaluate the soluble programmed death-ligand (sPD-L1) and soluble B7-H4 (sB7-H4) serum concentration levels longitudinal throughout the three trimesters of uncomplicated pregnancies. METHOD OF THE STUDY: sPD-L1 and sB7-H4 levels were determined with enzyme-linked immunosorbent assay (ELISA). The patients (n = 26) were divided into three groups according to the pregnancy trimester. Among 26 women involved in the study 14 had longitudinal sB7-H4 and sPD-L1 measurements in each trimester of pregnancy. RESULTS During the course of pregnancy, the sB7-H4 blood serum levels were significant higher in second trimester than in first and third trimester, whereas sPD-L1 levels increased significantly over the course of pregnancy. CONCLUSION The highest serum levels of sPD-L1 in the third trimester suggest increasing suppression of maternal immunity throughout pregnancy, whereas elevated sB7-H4 concentration levels in second trimester suggests different profile of T-cell regulation in physiological pregnancy.
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Affiliation(s)
- Pawel Mach
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Angela Köninger
- Department of Obstetrics and Gynecology, University of Regensburg, Hospital of the Barmherzige Brueder, Clinic St Hedwig, Regensburg, Germany
| | - Beatrix Reisch
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Rainer Kimmig
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Alexandra Gellhaus
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
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4
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Karvas RM, McInturf S, Zhou J, Ezashi T, Schust DJ, Roberts RM, Schulz LC. Use of a human embryonic stem cell model to discover GABRP, WFDC2, VTCN1 and ACTC1 as markers of early first trimester human trophoblast. Mol Hum Reprod 2021; 26:425-440. [PMID: 32359161 DOI: 10.1093/molehr/gaaa029] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 04/09/2020] [Accepted: 04/23/2020] [Indexed: 12/25/2022] Open
Abstract
Human placental development during early pregnancy is poorly understood. Many conceptuses are lost at this stage. It is thought that preeclampsia, intrauterine growth restriction and other placental syndromes that manifest later in pregnancy may originate early in placentation. Thus, there is a need for models of early human placental development. Treating human embryonic stem cells (hESCs) with BMP4 (bone morphogenic protein 4) plus A83-01 (ACTIVIN/NODAL signaling inhibitor) and PD173074 (fibroblast growth factor 2 or FGF2 signaling inhibitor) (BAP conditions) induces differentiation to the trophoblast lineage (hESCBAP), but it is not clear which stage of trophoblast differentiation these cells resemble. Here, comparison of the hESCBAP transcriptome to those of trophoblasts from human blastocysts, trophoblast stem cells and placentas collected in the first-third trimester of pregnancy by principal component analysis suggests that hESC after 8 days BAP treatment most resemble first trimester syncytiotrophoblasts. To further test this hypothesis, transcripts were identified that are expressed in hESCBAP but not in cultures of trophoblasts isolated from term placentas. Proteins encoded by four genes, GABRP (gamma-aminobutyric acid type A receptor subunit Pi), WFDC2 (WAP four-disulfide core domain 2), VTCN1 (V-set domain containing T-cell activation inhibitor 1) and ACTC1 (actin alpha cardiac muscle 1), immunolocalized to placentas at 4-9 weeks gestation, and their expression declined with gestational age (R2 = 0.61-0.83). None are present at term. Expression was largely localized to syncytiotrophoblast of both hESCBAP cells and placental material from early pregnancy. WFDC2, VTCN1 and ACTC1 have not previously been described in placenta. These results support the hypothesis that hESCBAP represent human trophoblast analogous to that of early first trimester and are a tool for discovery of factors important to this stage of placentation.
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Affiliation(s)
- Rowan M Karvas
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Samuel McInturf
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Jie Zhou
- Department of Obstetrics, Gynecology, and Women's Health, University of Missouri, Columbia, MO 65212, USA
| | - Toshihiko Ezashi
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Danny J Schust
- Department of Obstetrics, Gynecology, and Women's Health, University of Missouri, Columbia, MO 65212, USA
| | - R Michael Roberts
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA.,Department of Biochemistry University of Missouri, Columbia, MO 65211, USA
| | - Laura C Schulz
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA.,Department of Obstetrics, Gynecology, and Women's Health, University of Missouri, Columbia, MO 65212, USA
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5
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Zhao Y, Zheng Q, Jin L. The Role of B7 Family Molecules in Maternal-Fetal Immunity. Front Immunol 2020; 11:458. [PMID: 32265918 PMCID: PMC7105612 DOI: 10.3389/fimmu.2020.00458] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/27/2020] [Indexed: 01/08/2023] Open
Abstract
Pregnancy is a complex but well-arranged process, and a healthy fetus requires immune privilege and surveillance in the presence of paternally derived antigens. Maternal and fetal cells interact at the maternal–fetal interface. The upregulation and downregulation of maternal immunity executed by the leukocyte population predominantly depend on the activity of decidual natural killer cells and trophoblasts and are further modulated by a series of duplex signals. The B7 family, which consists of B7-1, B7-2, B7-H1, B7-DC, B7-H2, B7-H3, B7-H4, B7-H5, BTNL2, B7-H6, and B7-H7, is one of the most characterized and widely distributed signaling molecule superfamilies and conducts both stimulatory and inhibitory signals through separate interactions. In particular, the roles of B7-1, B7-2, B7-H1, and their corresponding receptors in the progression of normal pregnancy and some pregnancy complications have been extensively studied. Together with the TCR–MHC complex, B7 and its receptors play a critical role in cell proliferation and cytokine secretion. Depending on this ligand–receptor crosstalk, the balance between the tolerance and rejection of the fetus is perfectly maintained. This review aims to provide an overview of the current knowledge of the B7 family and its functions in regulating maternal–fetal immunity through individual interactions.
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Affiliation(s)
- Yongbo Zhao
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qingliang Zheng
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liping Jin
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
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6
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Wang JY, Wang WP. B7-H4, a promising target for immunotherapy. Cell Immunol 2019; 347:104008. [PMID: 31733822 DOI: 10.1016/j.cellimm.2019.104008] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/23/2019] [Accepted: 11/02/2019] [Indexed: 02/07/2023]
Abstract
The coinhibitory molecule B7-H4, an important member of the B7 family, is abnormally expressed in tumors, inflammation and autoimmune diseases. B7-H4 negatively regulates T cell immune response and promotes immune escape by inhibiting the proliferation, cytokine secretion, and cell cycle of T cells. Moreover, B7-H4 plays an extremely important role in tumorigenesis and tumor development including cell proliferation, invasion, metastasis, anti-apoptosis, etc. In addition, B7-H4 has the other biological functions, such as protection against type 1 diabetes (T1D) and islet cell transplantation. Therefore, B7-H4 has been identified as a novel marker or a therapeutic target for the treatment of tumors, inflammation, autoimmune diseases, and organ transplantation. Here, we summarized the expression profiles, physiological and pathological functions, and regulatory mechanisms of B7-H4, the signaling pathways involved, as well as B7-H4-based immunotherapy.
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Affiliation(s)
- Jia-Yu Wang
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Wei-Peng Wang
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
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7
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Mach P, Nolte-Boenigk L, Droste L, Fox L, Frank M, Schmidt B, Herse F, Verlohren S, Wicherek L, Iannaccone A, Birdir C, Andrikos D, Kimmig R, Gellhaus A, Köninger A. Soluble B7-H4 blood serum levels are elevated in women at high risk for preeclampsia in the first trimester, as well as in patients with confirmed preeclampsia. Am J Reprod Immunol 2018; 80:e12988. [PMID: 29797540 DOI: 10.1111/aji.12988] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/06/2018] [Indexed: 12/23/2022] Open
Abstract
PROBLEM B7-H4 negatively regulates T-cell-mediated immunity and might play an important role in preeclampsia (PE). Here, we have investigated the association between PE and maternal soluble B7-H4 (sB7-H4) serum levels and B7-H4 mRNA expression in the placenta. METHOD OF STUDY Maternal serum levels of sB7-H4 were determined by enzyme-linked immunosorbent assay in women between 11 and 13 weeks' gestation with elevated risk for PE (n = 48) and women without elevated risk for PE (n = 47). In the third trimester, sB7-H4 serum levels (n = 166) and B7-H4 mRNA expression in the placenta (n = 54) were determined in women with early-onset PE, late-onset PE, fetal growth restriction (FGR), and in healthy controls. RESULTS In the first trimester, significant higher levels of sB7-H4 were detected in women at elevated risk for PE compared to women without risk for PE (P < .0001). sB7-H4 has some predictive ability to identify cases with an elevated risk of developing PE with area under the curve (AUC) value of 0.88 (95% CI 0.8-0.94). Using a specificity of 90.0% led to a sensitivity of 47.9% and a threshold of 3.63 ng/mL. In the third trimester, the highest serum levels of sB7-H4 and B7-H4 mRNA expression in the placenta were observed in early-onset PE. Significant higher serum levels of sB7-H4 and B7-H4 mRNA expression in the placenta were observed in women with early-onset PE (P = .01 and P = .006, respectively) and late-onset PE (P = .03 and P = .004, respectively) compared to healthy controls, but not compared to FGR. CONCLUSION sB7-H4 is involved in the regulation of immune tolerance in women with PE in the third trimester. In the first trimester of pregnancy, sB7-H4 might serve as a predictive immunological biomarker for women who are at elevated risk of developing PE.
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Affiliation(s)
- Pawel Mach
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Luisa Nolte-Boenigk
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Leonie Droste
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Laura Fox
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Mirjam Frank
- Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
| | - Boerge Schmidt
- Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
| | - Florian Herse
- Charité Medical Faculty, Experimental and Clinical Research Center, a joint cooperation between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Stefan Verlohren
- Department of Obstetrics, Charité University Medicine, Berlin, Germany
| | - Lukasz Wicherek
- Department of Gynecology and Oncology and Gynecological Nursing, Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Antonella Iannaccone
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Cahit Birdir
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany.,Medical Faculty, Department of Obstetrics and Gynecology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Dimitrios Andrikos
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Rainer Kimmig
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Alexandra Gellhaus
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
| | - Angela Köninger
- Department of Obstetrics and Gynecology, University Hospital of Essen, Essen, Germany
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Mach P, Gellhaus A, Prager S, Moore T, Wennemuth G, Kimmig R, Köninger A, Singer BB. Soluble CEACAM1 and CEACAM6 are differently expressed in blood serum of pregnant women during normal pregnancy. Am J Reprod Immunol 2017; 78. [PMID: 28593707 DOI: 10.1111/aji.12700] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 04/04/2017] [Indexed: 12/17/2022] Open
Abstract
PROBLEM CEACAM1 and CEACAM6 belong to the carcinoembryonic antigen (CEA) family and may play an immune-modulatory role during pregnancy. The aim of the study was to determine the blood serum levels of soluble CEACAM1 and CEACAM6 over the course of pregnancy and postpartum. METHOD OF STUDY CEACAM1 and CEACAM6 levels were determined with customized in-house Sandwich-enzyme-linked immunosorbent assay (ELISA) systems. The study population (n=125) was divided into four groups according to the pregnancy trimester and postpartum. Additionally, samples of non-pregnant women (n=14) were analyzed. RESULTS Serum levels of CEACAM1 in healthy pregnant women were much lower than in non-pregnant women, a difference not seen for CEACAM6. Comparison between the trimesters and postpartum revealed a significant difference in CEACAM1 serum levels. The highest CEACAM1 levels were detected in third trimester. These levels were statistically significantly different from the CEACAM1 levels in first trimester and second trimester. The lowest levels were observed in the second trimester. Postpartum CEACAM1 serum concentrations were slightly lower than in the third trimester, but higher than in the first trimester and significantly higher compared to levels in the second trimester. CONCLUSION Decreased concentration of CEACAM1 during the pregnancy suggests its regulatory role in the immune tolerance during the course of pregnancy.
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Affiliation(s)
- Pawel Mach
- Department of Gynecology and Obstetrics, University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Alexandra Gellhaus
- Department of Gynecology and Obstetrics, University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Sebastian Prager
- Department of Paediatrics I/Neonatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Tom Moore
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
| | - Gunther Wennemuth
- Institute of Anatomy, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Rainer Kimmig
- Department of Gynecology and Obstetrics, University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Angela Köninger
- Department of Gynecology and Obstetrics, University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Bernhard B Singer
- Institute of Anatomy, University Hospital, University Duisburg-Essen, Essen, Germany
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9
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Mach P, Köninger A, Wicherek L, Kimmig R, Kasimir-Bauer S, Birdir C, Schmidt B, Gellhaus A. Serum concentrations of soluble B7-H4 in early pregnancy are elevated in women with preterm premature rupture of fetal membranes. Am J Reprod Immunol 2016; 76:149-54. [DOI: 10.1111/aji.12527] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 05/09/2016] [Indexed: 11/29/2022] Open
Affiliation(s)
- Pawel Mach
- Department of Gynecology and Obstetrics; University of Duisburg-Essen; Essen Germany
| | - Angela Köninger
- Department of Gynecology and Obstetrics; University of Duisburg-Essen; Essen Germany
| | - Lukasz Wicherek
- Chair of Oncology, Radiotherapy and Gynecologic Oncology of the Ludwik Rydygier Collegium Medicum in Bydgoszcz; Nicolaus Copernicus University; Bydgoszcz Poland
| | - Rainer Kimmig
- Department of Gynecology and Obstetrics; University of Duisburg-Essen; Essen Germany
| | - Sabine Kasimir-Bauer
- Department of Gynecology and Obstetrics; University of Duisburg-Essen; Essen Germany
| | - Cahit Birdir
- Department of Gynecology and Obstetrics; University of Duisburg-Essen; Essen Germany
| | - Börge Schmidt
- Institute for Medical Informatics, Biometry and Epidemiology (IMIBE); University of Duisburg-Essen; Essen Germany
| | - Alexandra Gellhaus
- Department of Gynecology and Obstetrics; University of Duisburg-Essen; Essen Germany
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Hu X, Wu J, An J, Hu Y, Shen Y, Liu C, Zhang X. Development of a novel monoclonal antibody to human inducible co-stimulator ligand (ICOSL): Biological characteristics and application for enzyme-linked immunosorbent assay. Int Immunopharmacol 2016; 36:151-157. [PMID: 27138044 DOI: 10.1016/j.intimp.2016.04.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 04/12/2016] [Accepted: 04/13/2016] [Indexed: 12/28/2022]
Abstract
ICOSL (B7-H2, CD275), a co-stimulatory molecule of the B7 superfamily, functions as a positive signal in immune response. To investigate whether ICOSL could be released into sera and the possible biological function of soluble ICOS (sICOSL), we generated and characterized a functional anti-human ICOSL monoclonal antibody (mAb), 20B10, and developed a novel enzyme-linked immunosorbent assay (ELISA) based on two anti-human ICOSL antibodies with different epitope specificities. Using the ELISA system, we found that sICOSL in the serum of healthy donors increases in an age-dependent manner and that the matrix metalloproteinase inhibitor (MMPI) could suppress sICOSL production. Together, these data demonstrate that the existence of circulating sICOSL in human serum might play an important role in immunoregulation.
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Affiliation(s)
- Xiaohan Hu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; Department of Immunology, Medical College of Soochow University, Suzhou 215006, China
| | - Jian Wu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Jingnan An
- Department of Immunology, Medical College of Soochow University, Suzhou 215006, China
| | - Yumin Hu
- Department of Immunology, Medical College of Soochow University, Suzhou 215006, China
| | - Yu Shen
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Cuiping Liu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China.
| | - Xueguang Zhang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; Department of Immunology, Medical College of Soochow University, Suzhou 215006, China.
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