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Kahouadji S, Giguère Y, Lambert S, Forest JC, Bernard N, Blanchon L, Marceau G, Durif J, Pereira B, Gallot D, Sapin V, Bouvier D. CX3CL1/Fractalkine as a biomarker for early pregnancy prediction of preterm premature rupture of membranes. Clin Chem Lab Med 2024; 62:1101-1108. [PMID: 38278625 PMCID: PMC11056942 DOI: 10.1515/cclm-2023-1202] [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: 10/25/2023] [Accepted: 01/13/2024] [Indexed: 01/28/2024]
Abstract
OBJECTIVES The objective of our study was to evaluate serum CX3CL1/Fractalkine, a monocyte/macrophage chemoattractant expressed in cytotrophoblasts and decidual cells, as a predictive biomarker for the occurrence of preterm premature rupture of membranes (PPROM). METHODS A case-control study of 438 pregnancies including 82 PPROM cases and 64 preterm labor with intact membranes cases with blood samples collected at first trimester, second trimester and delivery was conducted. The predictive ability of CX3CL1 and maternal risk factors for the occurrence of PPROM was assessed by receiver operating characteristic curve analysis. A second, independent cohort was prospectively constituted to confirm the case-control study results. RESULTS First trimester CX3CL1 was significantly increased in PPROM cases when compared to matched controls. Multivariate regression analysis highlighted a significant difference for CX3CL1 measured during the first trimester (p<0.001). Alone, CX3CL1 predicts PPROM with a 90 % sensitivity and a specificity around 40 %. The area under the receiver operating characteristic curve for PPROM prediction were 0.64 (95% confidence interval: 0.57-0.71) for first trimester CX3CL1, and 0.61 (95% confidence interval: 0.54-0.68) for maternal risk factors (body mass index<18.5 kg/m2, nulliparity, tobacco use and the absence of high school diploma). The combination of CX3CL1 and maternal risk factors significantly improved the area under the curve: 0.72 (95% confidence interval: 0.66-0.79) (p<0.001). The results were confirmed on a second independent cohort. CONCLUSIONS CX3CL1 is a promising blood biomarker in the early (first trimester) prediction of PPROM.
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Affiliation(s)
- Samy Kahouadji
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Yves Giguère
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, Canada
- Faculty of Medicine, Department of Molecular Biology, Medical Biochemistry and Pathology, Université Laval, Québec City, Canada
| | - Salomé Lambert
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Jean-Claude Forest
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, Canada
- Faculty of Medicine, Department of Molecular Biology, Medical Biochemistry and Pathology, Université Laval, Québec City, Canada
| | - Nathalie Bernard
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, Canada
| | - Loïc Blanchon
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Geoffroy Marceau
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Julie Durif
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Bruno Pereira
- Biostatistics Unit (DRCI), CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Denis Gallot
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
- Department of Obstetrics and Gynecology, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Vincent Sapin
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Damien Bouvier
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
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Zhang MM, Zhao YD, Li Q, He YJ. Chemokine CCL14 affected the clinical outcome and correlated with immune infiltrates in thyroid carcinoma. Histol Histopathol 2023; 38:695-707. [PMID: 36409028 DOI: 10.14670/hh-18-548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
BACKGROUND As an important member of the chemokines, CCL14 plays a vital role in cancer progression. However, the role of CCL14 in THCA has not been investigated. This study aimed to reveal the clinical significance of CCL14 in THCA. MATERIAL AND METHODS This study evaluated the expression and prognostic value of CCL14 in THCA. Also, the correlation between CCL14 and immune infiltrates was assessed. Enrichment analysis was finally performed to predict CCL14-associated pathways involved in THCA. RESULTS The mRNA and protein expressions of CCL14 in THCA tissues were down-regulated compared with normal tissues. CCL14 high expression predicted favorable DFI and PFI but did not influence the DSS and OS. Further, CCL14 showed a good prediction performance on the PFI of patients. Enrichment analysis found that CCL14 was negatively correlated with migration-related pathways such as Notch signaling, ECM-receptor interaction, and cell adhesion molecules. Further, we found that CCL14 was negatively related to immune infiltrates and their gene markers. A negative relationship was also observed between CCL14 and immune checkpoint genes. These results implied the potential effect of CCL14 on the immune response and immune therapy in THCA. CONCLUSIONS CCL14 high expression prolonged the DFI and PFI of THCA patients. It was negatively correlated with the migration-related pathways, suggesting that CCL14 might participate in the recurrence of THCA. Further, CCL14 was also shown to be important in immune response and immune therapy in THCA.
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Affiliation(s)
- Mi-Mi Zhang
- Department of Thyroid and Breast Surgery, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yan-Dong Zhao
- Department of Thyroid and Breast Surgery, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Qiang Li
- Department of Thyroid and Breast Surgery, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yue-Jun He
- Department of Thyroid and Breast Surgery, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
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Zhang L, Mamillapalli R, Habata S, McAdow M, Taylor HS. Myometrial-derived CXCL12 promotes lipopolysaccharide induced preterm labour by regulating macrophage migration, polarization and function in mice. J Cell Mol Med 2022; 26:2566-2578. [PMID: 35318804 PMCID: PMC9077289 DOI: 10.1111/jcmm.17252] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 01/23/2022] [Accepted: 02/11/2022] [Indexed: 12/18/2022] Open
Abstract
Preterm birth is a major contributor to neonatal mortality and morbidity. Infection results in elevation of inflammation-related cytokines followed by infiltration of immune cells into gestational tissue. CXCL12 levels are elevated in preterm birth indicating it may have a role in preterm labour (PTL); however, the pathophysiological correlations between CXCL12/CXCR4 signalling and premature labour are poorly understood. In this study, PTL was induced using lipopolysaccharide (LPS) in a murine model. LPS induced CXCL12 RNA and protein levels significantly and specifically in myometrium compared with controls (3-fold and 3.5-fold respectively). Highest levels were found just before the start of labour. LPS also enhanced the infiltration of neutrophils, macrophages and T cells, and induced macrophage M1 polarization. In vitro studies showed that condition medium from LPS-treated primary smooth muscle cells (SMC) induced macrophage migration, M1 polarization and upregulated inflammation-related cytokines such as interleukin (IL)-1, IL-6 and tumor necrosis factor alpha (TNF-α). AMD3100 treatment in pregnant mice led to a significant decrease in the rate of PTL (70%), prolonged pregnancy duration and suppressed macrophage infiltration into gestation tissue by 2.5-fold. Further, in-vitro treatment of SMC by AMD3100 suppressed the macrophage migration, decreased polarization and downregulated IL-1, IL-6 and TNF-α expression. LPS treatment in pregnant mice induced PTL by increasing myometrial CXCL12, which recruits immune cells that in turn produce inflammation-related cytokines. These effects stimulated by LPS were completely reversed by AMD3100 through blocking of CXCL12/CXCR4 signalling. Thus, the CXCL12/CXCR4 axis presents an excellent target for preventing infection and inflammation-related PTL.
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Affiliation(s)
- Lijuan Zhang
- Department of Obstetrics, Gynecology, and Reproductive SciencesYale School of MedicineNew HavenConnecticutUSA
| | - Ramanaiah Mamillapalli
- Department of Obstetrics, Gynecology, and Reproductive SciencesYale School of MedicineNew HavenConnecticutUSA
| | - Shutaro Habata
- Department of Obstetrics, Gynecology, and Reproductive SciencesYale School of MedicineNew HavenConnecticutUSA
| | - Molly McAdow
- Department of Obstetrics, Gynecology, and Reproductive SciencesYale School of MedicineNew HavenConnecticutUSA
| | - Hugh S. Taylor
- Department of Obstetrics, Gynecology, and Reproductive SciencesYale School of MedicineNew HavenConnecticutUSA
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Boros-Rausch A, Shynlova O, Lye SJ. A Broad-Spectrum Chemokine Inhibitor Blocks Inflammation-Induced Myometrial Myocyte-Macrophage Crosstalk and Myometrial Contraction. Cells 2021; 11:cells11010128. [PMID: 35011690 PMCID: PMC8750067 DOI: 10.3390/cells11010128] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 01/10/2023] Open
Abstract
Prophylactic administration of the broad-spectrum chemokine inhibitor (BSCI) FX125L has been shown to suppress uterine contraction, prevent preterm birth (PTB) induced by Group B Streptococcus in nonhuman primates, and inhibit uterine cytokine/chemokine expression in a murine model of bacterial endotoxin (LPS)-induced PTB. This study aimed to determine the mechanism(s) of BSCI action on human myometrial smooth muscle cells. We hypothesized that BSCI prevents infection-induced contraction of uterine myocytes by inhibiting the secretion of pro-inflammatory cytokines, the expression of contraction-associated proteins and disruption of myocyte interaction with tissue macrophages. Myometrial biopsies and peripheral blood were collected from women at term (not in labour) undergoing an elective caesarean section. Myocytes were isolated and treated with LPS with/out BSCI; conditioned media was collected; cytokine secretion was analyzed by ELISA; and protein expression was detected by immunoblotting and immunocytochemistry. Functional gap junction formation was assessed by parachute assay. Collagen lattices were used to examine myocyte contraction with/out blood-derived macrophages and BSCI. We found that BSCI inhibited (1) LPS-induced activation of transcription factor NF-kB; (2) secretion of chemokines (MCP-1/CCL2 and IL-8/CXCL8); (3) Connexin43-mediated intercellular connectivity, thereby preventing myocyte–macrophage crosstalk; and (4) myocyte contraction. BSCI represents novel therapeutics for prevention of inflammation-induced PTB in women.
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Affiliation(s)
- Adam Boros-Rausch
- Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, 25 Orde Street, Suite 6-1017, Toronto, ON M5G 1X5, Canada; (A.B.-R.); (S.J.L.)
- Department of Physiology, University of Toronto, Toronto, ON M5S 1A1, Canada
| | - Oksana Shynlova
- Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, 25 Orde Street, Suite 6-1017, Toronto, ON M5G 1X5, Canada; (A.B.-R.); (S.J.L.)
- Department of Physiology, University of Toronto, Toronto, ON M5S 1A1, Canada
- Department of Obstetrics & Gynecology, University of Toronto, Toronto, ON M5S 1A1, Canada
- Correspondence: ; Tel.: +1-416-586-4800 (ext. 5635); Fax: +1-416-586-5116
| | - Stephen James Lye
- Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, 25 Orde Street, Suite 6-1017, Toronto, ON M5G 1X5, Canada; (A.B.-R.); (S.J.L.)
- Department of Physiology, University of Toronto, Toronto, ON M5S 1A1, Canada
- Department of Obstetrics & Gynecology, University of Toronto, Toronto, ON M5S 1A1, Canada
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5
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Gong Q, Jiang Y, Lu J, You Y. [Fractalkine inhibits lipopolysaccharide-induced M1 polarization of macrophages by activating Wnt/β-catenin signaling pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2020; 40:1726-1731. [PMID: 33380403 DOI: 10.12122/j.issn.1673-4254.2020.12.05] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the mechanism by which fractalkine (CX3CL1; FKN) inhibits lipopolysaccharide (LPS)-induced immunological response in RAW264.7 cells. METHODS A RAW264.7 cell model overexpressing FKN was established by transfection with the lentiviral vector CX3CL1. The effects of LPS, ICG-001 (a Wnt/β-catenin signaling pathway inhibitor), either alone or in combination, on M1 polarization of na?ve and FKN-overexpressing RAW264.7 cells were evaluated by detecting of intereukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) using ELISA. The protein expressions of the inflammatory factors (iNOS, TNF-α, and IL-6), FKN, Wnt-4, and β-catenin were detected by Western blotting. The subcellular localization of IL-6 in the cells was detected by immunofluorescence assay. RESULTS The RAW264.7 cell model of FKN overexpression was successfully established. In na?ve RAW264.7 cells, treatment with both ICG-001 and LPS, as compared with LPS alone, significant promoted TNF-α and IL-6 secretions, increased intracellular levels of TNF-α, IL-6 and iNOS (P < 0.05), and reduced intracellular FKN, Wnt-4 and β-catenin levels (P < 0.01). In FKN-overexpressing RAW264.7 cells, LPS treatment significantly reduced the secretion of TNF-α and IL-6 and intracellular levels of TNF-α, IL-6 and iNOS (P < 0.01), increased intracellular FKN, Wnt-4 and β-catenin protein contents (P < 0.01), and inhibited IL-6 localization in the cytoplasm; compared with LPS, the combined treatment with ICG-001 and LPS obviously enhanced IL-6 localization in the cytoplasm of the cells. CONCLUSIONS FKN overexpression suppresses LPS-induced M1 type polarization of RAW264.7 cells by activating Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Qiming Gong
- Department of Nephrology, Affiliated Hospital, Youjiang Medical University for Nationalities, Baise 533000, China
| | - Yan Jiang
- Science Laboratory Center, Youjiang Medical University for Nationalities, Baise 533000, China
| | - Junling Lu
- Department of Nephrology, Affiliated Hospital, Youjiang Medical University for Nationalities, Baise 533000, China
| | - Yanwu You
- Department of Nephrology, Affiliated Hospital, Youjiang Medical University for Nationalities, Baise 533000, China
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Green ES, Arck PC. Pathogenesis of preterm birth: bidirectional inflammation in mother and fetus. Semin Immunopathol 2020; 42:413-429. [PMID: 32894326 PMCID: PMC7508962 DOI: 10.1007/s00281-020-00807-y] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/14/2020] [Indexed: 12/18/2022]
Abstract
Preterm birth (PTB) complicates 5–18% of pregnancies globally and is a leading cause of maternal and fetal morbidity and mortality. Most PTB is spontaneous and idiopathic, with largely undefined causes. To increase understanding of PTB, much research in recent years has focused on using animal models to recapitulate the pathophysiology of PTB. Dysfunctions of maternal immune adaptations have been implicated in a range of pregnancy pathologies, including PTB. A wealth of evidence arising from mouse models as well as human studies is now available to support that PTB results from a breakdown in fetal-maternal tolerance, along with excessive, premature inflammation. In this review, we examine the current knowledge of the bidirectional communication between fetal and maternal systems and its role in the immunopathogenesis of PTB. These recent insights significantly advance our understanding of the pathogenesis of PTB, which is essential to ultimately designing more effective strategies for early prediction and subsequent prevention of PTB.
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Affiliation(s)
- Ella Shana Green
- Department of Obstetrics and Fetal Medicine, Laboratory for Experimental Feto-Maternal Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20251, Hamburg, Germany
| | - Petra Clara Arck
- Department of Obstetrics and Fetal Medicine, Laboratory for Experimental Feto-Maternal Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20251, Hamburg, Germany.
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7
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Rasheed ZBM, Lee YS, Kim SH, Rai RK, Ruano CSM, Anucha E, Sullivan MHF, MacIntyre DA, Bennett PR, Sykes L. Differential Response of Gestational Tissues to TLR3 Viral Priming Prior to Exposure to Bacterial TLR2 and TLR2/6 Agonists. Front Immunol 2020; 11:1899. [PMID: 32983111 PMCID: PMC7477080 DOI: 10.3389/fimmu.2020.01899] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 07/15/2020] [Indexed: 12/19/2022] Open
Abstract
Background: Infection/inflammation is an important causal factor in spontaneous preterm birth (sPTB). Most mechanistic studies have concentrated on the role of bacteria, with limited focus on the role of viruses in sPTB. Murine studies support a potential multi-pathogen aetiology in which a double or sequential hit of both viral and bacterial pathogens leads to a higher risk preterm labour. This study aimed to determine the effect of viral priming on bacterial induced inflammation in human in vitro models of ascending and haematogenous infection. Methods: Vaginal epithelial cells, and primary amnion epithelial cells and myocytes were used to represent cell targets of ascending infection while interactions between peripheral blood mononuclear cells (PBMCs) and placental explants were used to model systemic infection. To model the effect of viral priming upon the subsequent response to bacterial stimuli, each cell type was stimulated first with a TLR3 viral agonist, and then with either a TLR2 or TLR2/6 agonist, and responses compared to those of each agonist alone. Immunoblotting was used to detect cellular NF-κB, AP-1, and IRF-3 activation. Cellular TLR3, TLR2, and TLR6 mRNA was quantified by RT-qPCR. Immunoassays were used to measure supernatant cytokine, chemokine and PGE2 concentrations. Results: TLR3 (“viral”) priming prior to TLR2/6 agonist (“bacterial”) exposure augmented the pro-inflammatory, pro-labour response in VECs, AECs, myocytes and PBMCs when compared to the effects of agonists alone. In contrast, enhanced anti-inflammatory cytokine production (IL-10) was observed in placental explants. Culturing placental explants in conditioned media derived from PBMCs primed with a TLR3 agonist enhanced TLR2/6 agonist stimulated production of IL-6 and IL-8, suggesting a differential response by the placenta to systemic inflammation compared to direct infection as a result of haematogenous spread. TLR3 agonism generally caused increased mRNA expression of TLR3 and TLR2 but not TLR6. Conclusion: This study provides human in vitro evidence that viral infection may increase the susceptibility of women to bacterial-induced sPTB. Improved understanding of interactions between viral and bacterial components of the maternal microbiome and host immune response may offer new therapeutic options, such as antivirals for the prevention of PTB.
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Affiliation(s)
- Zahirrah B M Rasheed
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,Department of Obstetrics and Gynaecology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yun S Lee
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,March of Dimes European Preterm Birth Research Centre, Imperial College London, London, United Kingdom
| | - Sung H Kim
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,March of Dimes European Preterm Birth Research Centre, Imperial College London, London, United Kingdom
| | - Ranjit K Rai
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Camino S M Ruano
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,INSERM U1016 Institut Cochin, Paris, France
| | - Eberechi Anucha
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Mark H F Sullivan
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - David A MacIntyre
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,March of Dimes European Preterm Birth Research Centre, Imperial College London, London, United Kingdom
| | - Phillip R Bennett
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,March of Dimes European Preterm Birth Research Centre, Imperial College London, London, United Kingdom
| | - Lynne Sykes
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom.,March of Dimes European Preterm Birth Research Centre, Imperial College London, London, United Kingdom
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Cowell W, Colicino E, Lee AG, Enlow MB, Flom JD, Berin C, Wright RO, Wright RJ. Data-driven discovery of mid-pregnancy immune markers associated with maternal lifetime stress: results from an urban pre-birth cohort. Stress 2020; 23:349-358. [PMID: 31664889 PMCID: PMC7210067 DOI: 10.1080/10253890.2019.1686612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/25/2019] [Indexed: 12/20/2022] Open
Abstract
Changes to the maternal inflammatory milieu may be a mechanism through which maternal psychosocial stress is transmitted to the fetus. Research investigating a limited number of immune markers may miss important signals. We take a proteomics approach to investigate maternal lifetime stress and 92 biomarkers of immune system status. Participants were enrolled in an urban, dual-site (Boston, n = 301 and New York City, n = 110) pregnancy cohort. We measured maternal lifetime history of stress and trauma using the validated Life Stressor Checklist-Revised (LSC-R). We measured a panel of 92 immune-related proteins in mid-pregnancy serum using proximity extension assay technology. We leveraged the dual-site study design to perform variable selection and inference within the cohort. First, we used LASSO to select immune markers related to maternal stress among Boston mothers. Then, we performed OLS regression to examine associations between maternal stress and LASSO-selected proteins among New York City mothers. LASSO regression selected 19 immune proteins with non-null coefficients (CCL11, CCL23, CD244, CST5, CXCL1, CXCL5, CXCL10, CX3CL1, FGF-23, IL-5, IL-7, IL-10, IL-17C, MCP-2, MMP-1, SLAMF1, ST1A1, TNF-β, and TWEAK). Of these, only the chemotactic cytokine CX3CL1 (i.e. fractalkine) was significantly associated with maternal stress among the validation sample (percent change in LSC-R score per 1% increase in relative fractalkine expression: 0.74, 95% confidence interval: 0.19, 1.28). Expanding research suggests fractalkine plays an important role in many aspects of pregnancy and fetal development and is stress-sensitive. We found that maternal lifetime history of stress and trauma was significantly associated with elevated serum fractalkine levels during pregnancy.
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Affiliation(s)
- Whitney Cowell
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alison G. Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Julie D. Flom
- Department of Pediatrics, Kravis Children’s Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Cecilia Berin
- Department of Pediatrics, Kravis Children’s Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert O. Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rosalind J. Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pediatrics, Kravis Children’s Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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9
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Reuschel E, Toelge M, Entleutner K, Deml L, Seelbach-Goebel B. Cytokine profiles of umbilical cord blood mononuclear cells upon in vitro stimulation with lipopolysaccharides of different vaginal gram-negative bacteria. PLoS One 2019; 14:e0222465. [PMID: 31536529 PMCID: PMC6752847 DOI: 10.1371/journal.pone.0222465] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 08/30/2019] [Indexed: 01/01/2023] Open
Abstract
Inflammatory immune responses induced by lipopolysaccharides (LPS) of gram-negative bacteria play an important role in the pathogenesis of preterm labor and delivery, and in neonatal disorders. To better characterize LPS-induced inflammatory response, we determined the cytokine profile of umbilical cord blood mononuclear cells (UBMC) stimulated with LPS of seven vaginal gram-negative bacteria commonly found in pregnant women with preterm labor and preterm rupture of membrane. UBMC from ten newborns of healthy volunteer mothers were stimulated with purified LPS of Escherichia coli, Enterobacter aerogenes, Klebsiella pneumoniae, Proteus mirabilis, Acinetobacter calcoaceticus, Citrobacter freundii, and Pseudomonas aeruginosa. UBMC supernatants were tested for the presence of secreted pro-inflammatory cytokines (IL-6, IL-1β, TNF), anti-inflammatory cytokine (IL-10), TH1-type cytokines (IL-12, IFN-γ), and chemokines (IL-8, MIP-1α, MIP-1β, MCP-1) by Luminex technology. The ten cytokines were differentially induced by the LPS variants. LPS of E. coli and E. aerogenes showed the strongest stimulatory activity and P. aeruginosa the lowest. Interestingly, the ability of UBMC to respond to LPS varied greatly among donors, suggesting a strong individual heterogeneity in LPS-triggered inflammatory response.
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Affiliation(s)
- Edith Reuschel
- Department of Obstetrics and Gynecology, University of Regensburg, Hospital of the Barmherzige Brueder, Clinic St Hedwig, Regensburg, Germany
- * E-mail:
| | - Martina Toelge
- Institute of Medical Microbiology, University Hospital Regensburg, Regensburg, Germany
| | - Kathrin Entleutner
- Department of Obstetrics and Gynecology, University of Regensburg, Hospital of the Barmherzige Brueder, Clinic St Hedwig, Regensburg, Germany
| | - Ludwig Deml
- Institute of Medical Microbiology, University Hospital Regensburg, Regensburg, Germany
| | - Birgit Seelbach-Goebel
- Department of Obstetrics and Gynecology, University of Regensburg, Hospital of the Barmherzige Brueder, Clinic St Hedwig, Regensburg, Germany
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