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Sheikh A, Ganguli D, Vickers TJ, Singer BB, Foulke-Abel J, Akhtar M, Khatoon N, Setu B, Basu S, Harro C, Maier N, Beatty WL, Chakraborty S, Bhuiyan TR, Qadri F, Donowitz M, Fleckenstein JM. Host-derived CEACAM-laden vesicles engage enterotoxigenic Escherichia coli for elimination and toxin neutralization. Proc Natl Acad Sci U S A 2024; 121:e2410679121. [PMID: 39264739 PMCID: PMC11420188 DOI: 10.1073/pnas.2410679121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 08/10/2024] [Indexed: 09/14/2024] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) cause hundreds of millions of diarrheal illnesses annually ranging from mildly symptomatic cases to severe, life-threatening cholera-like diarrhea. Although ETEC are associated with long-term sequelae including malnutrition, the acute diarrheal illness is largely self-limited. Recent studies indicate that in addition to causing diarrhea, the ETEC heat-labile toxin (LT) modulates the expression of many genes in intestinal epithelia, including carcinoembryonic cell adhesion molecules (CEACAMs) which ETEC exploit as receptors, enabling toxin delivery. Here, however, we demonstrate that LT also enhances the expression of CEACAMs on extracellular vesicles (EV) shed by intestinal epithelia and that CEACAM-laden EV increase in abundance during human infections, mitigate pathogen-host interactions, scavenge free ETEC toxins, and accelerate ETEC clearance from the gastrointestinal tract. Collectively, these findings indicate that CEACAMs play a multifaceted role in ETEC pathogen-host interactions, transiently favoring the pathogen, but ultimately contributing to innate responses that extinguish these common infections.
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Affiliation(s)
- Alaullah Sheikh
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
| | - Debayan Ganguli
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
| | - Tim J. Vickers
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
| | - Bernhard B. Singer
- Institute of Anatomy, Medical Faculty, University of Duisburg-Essen, 45147Essen, Germany
| | - Jennifer Foulke-Abel
- Division of Gastroenterology & Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD21287
| | - Marjahan Akhtar
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
- Enteric and Respiratory. Infections, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka1212, Bangladesh
| | - Nazia Khatoon
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
| | - Bipul Setu
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
| | - Supratim Basu
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
| | - Clayton Harro
- Division of Global Disease Epidemiology and Control with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD21205
| | - Nicole Maier
- Center for Vaccine Innovation and Access, PATH, Seattle, WA98121
| | - Wandy L. Beatty
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, MO63110
| | - Subhra Chakraborty
- Division of Global Disease Epidemiology and Control with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD21205
| | - Taufiqur R. Bhuiyan
- Enteric and Respiratory. Infections, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka1212, Bangladesh
| | - Firdausi Qadri
- Enteric and Respiratory. Infections, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Mohakhali, Dhaka1212, Bangladesh
| | - Mark Donowitz
- Division of Gastroenterology & Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD21287
| | - James M. Fleckenstein
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, MO63110
- Medicine Service, Infectious Disease Section, Veterans Affairs Health Care System, Saint Louis, MO63106
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2
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Mendoza M, Ballesteros A, Rendon-Correa E, Tonk R, Warren J, Snow AL, Stowell SR, Blois SM, Dveksler G. Modulation of galectin-9 mediated responses in monocytes and T-cells by pregnancy-specific glycoprotein 1. J Biol Chem 2024; 300:107638. [PMID: 39121996 PMCID: PMC11403483 DOI: 10.1016/j.jbc.2024.107638] [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: 05/20/2024] [Revised: 07/16/2024] [Accepted: 07/18/2024] [Indexed: 08/12/2024] Open
Abstract
Successful pregnancy relies on a coordinated interplay between endocrine, immune, and metabolic processes to sustain fetal growth and development. The orchestration of these processes involves multiple signaling pathways driving cell proliferation, differentiation, angiogenesis, and immune regulation necessary for a healthy pregnancy. Among the molecules supporting placental development and maternal tolerance, the families of pregnancy-specific glycoproteins and galectins are of great interest in reproductive biology. We previously found that PSG1 can bind to galectin-1 (GAL-1). Herein, we characterized the interaction between PSG1 and other members of the galectin family expressed during pregnancy, including galectin-3, -7, -9, and -13 (GAL-3, GAL-7, GAL-9, and GAL-13). We observed that PSG1 binds to GAL-1, -3, and -9, with the highest apparent affinity seen for GAL-9, and that the interaction of PSG1 with GAL-9 is carbohydrate-dependent. We further investigated the ability of PSG1 to regulate GAL-9 responses in human monocytes, a murine macrophage cell line, and T-cells, and determined whether PSG1 binds to both carbohydrate recognition domains of GAL-9. Additionally, we compared the apparent affinity of GAL-9 binding to PSG1 with other known GAL-9 ligands in these cells, Tim-3 and CD44. Lastly, we explored functional conservation between murine and human PSGs by determining that Psg23, a highly expressed member of the murine Psg family, can bind some murine galectins despite differences in amino acid composition and domain structure.
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Affiliation(s)
- Mirian Mendoza
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Angela Ballesteros
- Section on Sensory Physiology and Biophysics, National Institute on Deafness and other Communication Disorders, National Institutes of Health, Bethesda, Maryland, USA
| | - Elizabeth Rendon-Correa
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Rohan Tonk
- Section on Sensory Physiology and Biophysics, National Institute on Deafness and other Communication Disorders, National Institutes of Health, Bethesda, Maryland, USA
| | - James Warren
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Andrew L Snow
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Sean R Stowell
- Department of Pathology, Brigham and Women's Hospital, Boston Massachusetts, USA
| | - Sandra M Blois
- Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Glyco-HAM, a cooperation of Universität Hamburg, Technology Platform Mass Spectrometry and University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriela Dveksler
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.
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3
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Sheikh A, Ganguli D, Vickers TJ, Singer B, Foulke-Abel J, Akhtar M, Khatoon N, Setu B, Basu S, Harro C, Maier N, Beatty WL, Chakraborty S, Bhuiyan TR, Qadri F, Donowitz M, Fleckenstein JM. Host-derived CEACAM-laden vesicles engage enterotoxigenic E. coli for elimination and toxin neutralization. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.24.604983. [PMID: 39091797 PMCID: PMC11291149 DOI: 10.1101/2024.07.24.604983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Enterotoxigenic Escherichia coli (ETEC) cause hundreds of millions of diarrheal illnesses annually ranging from mildly symptomatic cases to severe, life-threatening cholera-like diarrhea. Although ETEC are associated with long-term sequelae including malnutrition, the acute diarrheal illness is largely self-limited. Recent studies indicate that in addition to causing diarrhea, the ETEC heat-labile toxin (LT) modulates the expression of many genes in intestinal epithelia, including carcinoembryonic cell adhesion molecules (CEACAMs) which ETEC exploit as receptors, enabling toxin delivery. Here however, we demonstrate that LT also enhances the expression of CEACAMs on extracellular vesicles (EV) shed by intestinal epithelia and that CEACAM-laden EV increase in abundance during human infections, mitigate pathogen-host interactions, scavenge free ETEC toxins, and accelerate ETEC clearance from the gastrointestinal tract. Collectively, these findings indicate that CEACAMs play a multifaceted role in ETEC pathogen-host interactions, transiently favoring the pathogen, but ultimately contributing to innate responses that extinguish these common infections.
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Affiliation(s)
- Alaullah Sheikh
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Debayan Ganguli
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Tim J. Vickers
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Bernhard Singer
- Institute of Anatomy, Medical Faculty, University of Suisberg-Essen, 45147 Essen, Germany
| | - Jennifer Foulke-Abel
- Division of Gastroenterology & Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Marjahan Akhtar
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
- International Centre for Diarrhoeal Disease Research, Bangladesh; Dhaka, Bangladesh
| | - Nazia Khatoon
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Bipul Setu
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Supratim Basu
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Clayton Harro
- Department of International Health, Division of Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health
| | | | - Wandy L. Beatty
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, USA
| | - Subhra Chakraborty
- Department of International Health, Division of Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health
| | - Tafiqur R. Bhuiyan
- International Centre for Diarrhoeal Disease Research, Bangladesh; Dhaka, Bangladesh
| | - Firdausi Qadri
- International Centre for Diarrhoeal Disease Research, Bangladesh; Dhaka, Bangladesh
| | - Mark Donowitz
- Division of Gastroenterology & Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - James M. Fleckenstein
- Division of Infectious Diseases, Department of Medicine, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
- Medicine Service, Infectious Disease Section, Veterans Affairs Health Care System, Saint Louis, Missouri, USA
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Kammerer R, Zimmermann W. Two waves of evolution in the rodent pregnancy-specific glycoprotein (Psg) gene family lead to structurally diverse PSGs. BMC Genomics 2023; 24:468. [PMID: 37605167 PMCID: PMC10440875 DOI: 10.1186/s12864-023-09560-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 08/07/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND The evolution of pregnancy-specific glycoprotein (PSG) genes within the CEA gene family of primates correlates with the evolution of hemochorial placentation about 45 Myr ago. Thus, we hypothesized that hemochorial placentation with intimate contact between fetal cells and maternal immune cells favors the evolution and expansion of PSGs. With only a few exceptions, all rodents have hemochorial placentas thus the question arises whether Psgs evolved in all rodent genera. RESULTS In the analysis of 94 rodent species from 4 suborders, we identified Psg genes only in the suborder Myomorpha in three families (characteristic species in brackets), namely Muridae (mouse), Cricetidae (hamster) and Nesomyidae (giant pouched rat). All Psgs are located, as previously described for mouse and rat, in a region of the genome separated from the Cea gene family locus by several megabases, further referred to as the rodent Psg locus. In the suborders Castorimorpha (beaver), Hystricognatha (guinea pig) and Sciuromorpha (squirrel), neither Psg genes nor so called CEA-related cell adhesion molecule (Ceacam) genes were found in the Psg locus. There was even no evidence for the existence of Psgs in any other genomic region. In contrast to the Psg-harboring rodent species, which do not have activating CEACAMs, we were able to identify Ceacam genes encoding activating CEACAMs in all other rodents studied. In the Psg locus, there are genes encoding three structurally distinct CEACAM/PSGs: (i) CEACAMs composed of one N- and one A2-type domain (CEACAM9, CEACAM15), (ii) composed of two N domains (CEACAM11-CEACAM14) and (iii) composed of three to eight N domains and one A2 domain (PSGs). All of them were found to be secreted glycoproteins preferentially expressed by trophoblast cells, thus they should be considered as PSGs. CONCLUSION In rodents Psg genes evolved only recently in the suborder Myomorpha shortly upon their most recent common ancestor (MRCA) has coopted the retroviral genes syncytin-A and syncytin-B which enabled the evolution of the three-layered trophoblast. The expansion of Psgs is limited to the Psg locus most likely after a translocation of a CEA-related gene - possibly encoding an ITAM harboring CEACAM. According to the expression pattern two waves of gene amplification occurred, coding for structurally different PSGs.
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Affiliation(s)
- Robert Kammerer
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Greifswald, Germany
| | - Wolfgang Zimmermann
- Tumor Immunology Laboratory, LIFE Center, LMU Klinikum, University Munich, Munich, Germany
- Department of Urology, LMU Klinikum, University Munich, Munich, Germany
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Yung HW, Zhao X, Glover L, Burrin C, Pang PC, Jones CJ, Gill C, Duhig K, Olovsson M, Chappell LC, Haslam SM, Dell A, Burton GJ, Charnock-Jones DS. Perturbation of placental protein glycosylation by endoplasmic reticulum stress promotes maladaptation of maternal hepatic glucose metabolism. iScience 2023; 26:105911. [PMID: 36660474 PMCID: PMC9843443 DOI: 10.1016/j.isci.2022.105911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/30/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Placental hormones orchestrate maternal metabolic adaptations to support pregnancy. We hypothesized that placental ER stress, which characterizes early-onset pre-eclampsia (ePE), compromises glycosylation, reducing hormone bioactivity and these maladaptations predispose the mother to metabolic disease in later life. We demonstrate ER stress reduces the complexity and sialylation of trophoblast protein N-glycosylation, while aberrant glycosylation of vascular endothelial growth factor reduced its bioactivity. ER stress alters the expression of 66 of the 146 genes annotated with "protein glycosylation" and reduces the expression of sialyltransferases. Using mouse placental explants, we show ER stress promotes the secretion of mis-glycosylated glycoproteins. Pregnant mice carrying placentas with junctional zone-specific ER stress have reduced blood glucose, anomalous hepatic glucose metabolism, increased cellular stress and elevated DNA methyltransferase 3A. Using pregnancy-specific glycoproteins as a readout, we also demonstrate aberrant glycosylation of placental proteins in women with ePE, thus providing a mechanistic link between ePE and subsequent maternal metabolic disorders.
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Affiliation(s)
- Hong Wa Yung
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - Xiaohui Zhao
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - Luke Glover
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - Charlotte Burrin
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - Poh-Choo Pang
- Department of Life Sciences, Imperial College London, London, UK
| | - Carolyn J.P. Jones
- Maternal and Fetal Health Centre, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
| | - Carolyn Gill
- Department of Women and Children’s Health, King’s College London, London, UK
| | - Kate Duhig
- Maternal and Fetal Health Centre, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
- Department of Women and Children’s Health, King’s College London, London, UK
| | - Matts Olovsson
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Lucy C. Chappell
- Department of Women and Children’s Health, King’s College London, London, UK
| | - Stuart M. Haslam
- Department of Life Sciences, Imperial College London, London, UK
| | - Anne Dell
- Department of Life Sciences, Imperial College London, London, UK
| | - Graham J. Burton
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - D. Stephen Charnock-Jones
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
- Department of Obstetrics and Gynaecology, University of Cambridge, Cambridge CB2 0SW, UK
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Zhang D, Wu J, Yuan Y, Li X, Gao X, Han M, Gao S, Huang S, Dai P. A novel missense variant in CEACAM16 gene causes autosomal dominant nonsyndromic hearing loss. Ann Hum Genet 2022; 86:207-217. [PMID: 35292975 PMCID: PMC9314904 DOI: 10.1111/ahg.12463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 11/27/2022]
Abstract
AbstractAimAutosomal dominant non‐syndromic hearing loss is a common sensorineural disorder with extremely high genetic heterogeneity. CEA antigen‐related cell adhesion molecule 16(CEACAM16)is a secreted glycoprotein encoded by the CEACAM16 gene. Mutations in CEACAM16 lead to autosomal dominant non‐syndromic hearing loss in humans, due defects in the tectorial membrane of the inner ear. Here we reported a novel missense variant in CEACAM16 gene causes autosomal dominant non‐syndromic hearing loss.Material and methodsA four‐generation Chinese family affected by late‐onset and progressive hearing loss was enrolled in this study. The proband was analyzed by targeted next‐generation sequencing and bioinformatic analysis. And in vitro experiments were performed in overexpressed transfected HEK293T cells to investigate the pathogenesis of the mutant protein.ResultsWe identified a novel missense variant in the CEACAM16 gene c.763A>G; (p.Arg255Gly) as causing autosomal dominant non‐syndromic hearing loss in the Chinese family. Using Western blot analysis, ELISA, and immunofluorescence we found increased expression level of the secreted mutant CEACAM16 protein, both intracellularly and extracellularly, compared with wild type CEACAM16 protein.ConclusionOur study showed that the p.Arg255Gly variant leads to increased secretion of mutant CEACAM16 protein, with potential deleterious effect to the function of the protein. Our findings expand the mutation spectrum of CEACAM16, and further the understanding CEACAM16 function and implications in disease.
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Affiliation(s)
- Dejun Zhang
- College of Otolaryngology Head and Neck SurgeryChinese PLA General HospitalBeijingChina
- Department of Otolaryngology Head and Neck SurgeryThe Second Hospital of Jilin UniversityChangchunChina
- State Key Lab of Hearing Science, Ministry of EducationNational Clinical Research Center for Otolaryngologic DiseasesBeijingChina
- Beijing Key Lab of Hearing Impairment for Prevention and TreatmentBeijingChina
| | - Jie Wu
- College of Otolaryngology Head and Neck SurgeryChinese PLA General HospitalBeijingChina
- State Key Lab of Hearing Science, Ministry of EducationNational Clinical Research Center for Otolaryngologic DiseasesBeijingChina
- Beijing Key Lab of Hearing Impairment for Prevention and TreatmentBeijingChina
| | - Yongyi Yuan
- College of Otolaryngology Head and Neck SurgeryChinese PLA General HospitalBeijingChina
- State Key Lab of Hearing Science, Ministry of EducationNational Clinical Research Center for Otolaryngologic DiseasesBeijingChina
- Beijing Key Lab of Hearing Impairment for Prevention and TreatmentBeijingChina
| | - Xiaohong Li
- Department of Otolaryngology, Head and Neck Surgery, National Children's Medical Center/Beijing Children's HospitalCapital Medical UniversityBeijingPR China
| | - Xue Gao
- Department of OtolaryngologyPLA Rocket Force Characteristic Medical CenterBeijingChina
| | - Mingyu Han
- College of Otolaryngology Head and Neck SurgeryChinese PLA General HospitalBeijingChina
- State Key Lab of Hearing Science, Ministry of EducationNational Clinical Research Center for Otolaryngologic DiseasesBeijingChina
- Beijing Key Lab of Hearing Impairment for Prevention and TreatmentBeijingChina
| | - Song Gao
- Department of OtolaryngologySouth‐East Hospital Affiliated to Xiamen UniversityZhangzhouChina
| | - Shasha Huang
- College of Otolaryngology Head and Neck SurgeryChinese PLA General HospitalBeijingChina
- State Key Lab of Hearing Science, Ministry of EducationNational Clinical Research Center for Otolaryngologic DiseasesBeijingChina
- Beijing Key Lab of Hearing Impairment for Prevention and TreatmentBeijingChina
| | - Pu Dai
- College of Otolaryngology Head and Neck SurgeryChinese PLA General HospitalBeijingChina
- State Key Lab of Hearing Science, Ministry of EducationNational Clinical Research Center for Otolaryngologic DiseasesBeijingChina
- Beijing Key Lab of Hearing Impairment for Prevention and TreatmentBeijingChina
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Kim EY, Cha YJ, Jeong S, Chang YS. Overexpression of CEACAM6 activates Src-FAK signaling and inhibits anoikis, through homophilic interactions in lung adenocarcinomas. Transl Oncol 2022; 20:101402. [PMID: 35358791 PMCID: PMC8968058 DOI: 10.1016/j.tranon.2022.101402] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 03/17/2022] [Indexed: 11/29/2022] Open
Abstract
CEACAM6 is overexpressed in most lung adenocarcinomas. CEACAM6 is significantly expressed in lung cancer cells of non-smokers. Lung adenocarcinoma patients overexpressing CEACAM6 have shorter overall survival. Exogenous CEACAM5/6 interacts with cell membrane-bound CEACAM6 in lung cancers. CEACAM6 homophilic interactions inhibit anoikis through Src-FAK activation.
Among carcinoembryonic antigen-related cell adhesion molecule (CEACAM) family proteins, CEACAM6 has received less attention than CEACAM5 and its presence and role in lung cancer are largely unknown. The application of CellphoneDB on the single cell RNA sequencing dataset showed that the homophilic interactions among CEACAM6 molecules, which are overexpressed in lung cancer cells were highly significant. CEACAM6 was overexpressed in 80.1% of lung adenocarcinomas and its overexpression had a significant relationship with non-smoking history and activating EGFR mutations. The effect of CEACAM6 overexpression on patient prognosis was evaluated using TCGA-LUAD dataset; the CEACAM6 overexpression group showed a shorter overall survival than that of the control group when matched for stage, age, sex, and pack-years. Immunoblotting of cell culture soup and ELISA of human derived material suggested that the majority of CEACAM6 was present on the cancer cell surface and interacted with other cancer cells in the crowded tumor microenvironment. Treatment with CEACAM6 showed CEACAM6 homophilic interactions in the cell membrane and anoikis inhibition through the activation of the Src-FAK pathway. Inhibition of CEACAM6 or its homophilic interactions in the cancer cell membrane may provide another therapeutic strategy for lung cancer.
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8
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Baek DS, Kim YJ, Vergara S, Conard A, Adams C, Calero G, Ishima R, Mellors JW, Dimitrov DS. A highly-specific fully-human antibody and CAR-T cells targeting CD66e/CEACAM5 are cytotoxic for CD66e-expressing cancer cells in vitro and in vivo. Cancer Lett 2021; 525:97-107. [PMID: 34740610 DOI: 10.1016/j.canlet.2021.10.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 09/20/2021] [Accepted: 10/27/2021] [Indexed: 11/02/2022]
Abstract
Neuro-endocrine prostate cancer (NEPC) accounts for about 20% of lethal metastatic castration-resistant prostate cancer (CRPC). NEPC has the most aggressive biologic behavior of all prostate cancers and is associated with poor patient outcome. Effective treatment for NEPC is not available because NEPC exhibit distinct cell-surface expression profiles compared to other types of prostate cancer. Recently, the carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) (known as CEA or CD66e) was suggested to be a specific surface protein marker for NEPC. Therefore, we identified a new, fully-human anti-CEACAM5 monoclonal antibody, 1G9, which bound to the most proximal membrane domains, A3 and B3, of CEACAM5 with high affinity and specificity. It shows no off-target binding to other CEACAM family members, membrane distal domains of CEACAM5, or 5800 human membrane proteins. IgG1 1G9 exhibited CEACAM5-specific ADCC activity toward CEACAM5-positive prostate cancer cells in vitro and in vivo. Chimeric antigen receptor T cells (CAR-T) based on scFv 1G9 induced specific and strong antitumor activity in a mouse model of prostate cancer. Our results suggest that IgG1 and CAR-T cells based on 1G9 are promising candidate therapeutics for CEACAM5-positive NEPC and other cancers.
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Affiliation(s)
- Du-San Baek
- Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| | - Ye-Jin Kim
- Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Sandra Vergara
- Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Alex Conard
- Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Abound Bio, Pittsburgh, PA, USA
| | - Cynthia Adams
- Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Guillermo Calero
- Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Rieko Ishima
- Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - John W Mellors
- Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Abound Bio, Pittsburgh, PA, USA
| | - Dimiter S Dimitrov
- Center for Antibody Therapeutics, Division of Infectious Diseases, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Abound Bio, Pittsburgh, PA, USA.
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9
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Jacqueline C, Dracz M, Boothman S, Minden JS, Gottschalk RA, Finn OJ. Identification of Cell Surface Molecules That Determine the Macrophage Activation Threshold Associated With an Early Stage of Malignant Transformation. Front Immunol 2021; 12:749597. [PMID: 34712237 PMCID: PMC8546176 DOI: 10.3389/fimmu.2021.749597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/27/2021] [Indexed: 01/06/2023] Open
Abstract
The ability of immune cells to sense changes associated with malignant transformation as early as possible is likely to be important for the successful outcome of cancer immunosurveillance. In this process, the immune system faces a trade-off between elimination of cells harboring premalignant or malignant changes, and autoimmune pathologies. We hypothesized that the immune system has therefore evolved a threshold for the stage of transformation from normal to fully malignant cells that first provides a threat (danger) signal requiring a response. We co-cultured human macrophages with a unique set of genetically related human cell lines that recapitulate successive stages in breast cancer development: MCF10A (immortalized, normal); MCFNeoT (benign hyperplasia); MCFT1 (atypical hyperplasia); MCFCA1 (invasive cancer). Using cytokines-based assays, we found that macrophages were inert towards MCF10A and MCFNeoT but were strongly activated by MCFT1 and MCFCA1 to produce inflammatory cytokines, placing the threshold for recognition between two premalignant stages, the earlier stage MCFNeoT and the more advanced MCFT1. The cytokine activation threshold paralleled the threshold for enhanced phagocytosis. Using proteomic and transcriptomic approaches, we identified surface molecules, some of which are well-known tumor-associated antigens, that were absent or expressed at low levels in MCF10A and MCFNeoT but turned on or over-expressed in MCFT1 and MCFCA1. Adding antibodies specific for two of these molecules, Annexin-A1 and CEACAM1, inhibited macrophage activation, supporting their role as cancer "danger signals" recognized by macrophages.
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Affiliation(s)
- Camille Jacqueline
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Matthew Dracz
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Sarah Boothman
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Jonathan S. Minden
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Rachel A. Gottschalk
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Olivera J. Finn
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, United States
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10
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Zöller J, Ebel JF, Khairnar V, Schmitt V, Klopfleisch R, Meiners J, Seiffart V, Hansen W, Buer J, Singer BB, Lang KS, Westendorf AM. CEACAM1 regulates CD8 + T cell immunity and protects from severe pathology during Citrobacter rodentium induced colitis. Gut Microbes 2020; 11:1790-1805. [PMID: 32521208 PMCID: PMC7524155 DOI: 10.1080/19490976.2020.1775464] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 05/11/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023] Open
Abstract
The incidence of gastrointestinal infections continues to increase, and infectious colitis contributes significantly to morbidity and mortality worldwide. Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) has been discovered to be strongly involved in the intestinal homeostasis. However, whether intestinal CEACAM1 expression has an impact on the control of infectious colitis remains elusive. Citrobacter rodentium (C. rodentium) is a gram-negative enteric pathogen that induces colonic inflammation in mice, with a critical role for CD4+ T cell but not CD8+ T cell immunity to primary infection. Here, we show that Ceacam1-/- mice are much more susceptible to C. rodentium infection than wildtype mice, which is mediated by a defect in the intestinal barrier and, surprisingly, by a dysregulated CD8+ T cell but not CD4+ T cell response in the colon. CEACAM1 expression is essential for the control of CD8+ T cell immunity, as CEACAM1 deficiency during C. rodentium infection inhibits CD8+ T cell exhaustion. We conclude that CEACAM1 is an important regulator of CD8+ T cell function in the colon, and blocking CEACAM1 signaling to activate CD8+ T cells may have unforeseen side effects.
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Affiliation(s)
- Julia Zöller
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Jana-Fabienne Ebel
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Vishal Khairnar
- Institute for Immunology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Department of Systems Biology, City of Hope Comprehensive Cancer Center, Monrovia, CA, USA
| | - Verena Schmitt
- Institute of Anatomy, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Robert Klopfleisch
- Institute of Veterinary Pathology, Free University of Berlin, Berlin, Germany
| | - Jana Meiners
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Virginia Seiffart
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Wiebke Hansen
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Jan Buer
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Bernhard B. Singer
- Institute of Anatomy, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Karl S. Lang
- Institute for Immunology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Astrid M. Westendorf
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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11
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Decary S, Berne PF, Nicolazzi C, Lefebvre AM, Dabdoubi T, Cameron B, Rival P, Devaud C, Prades C, Bouchard H, Cassé A, Henry C, Amara C, Brillac C, Ferrari P, Maçon L, Lacoste E, Combeau C, Beys E, Naimi S, García-Echeverría C, Mayaux JF, Blanc V. Preclinical Activity of SAR408701: A Novel Anti-CEACAM5-maytansinoid Antibody-drug Conjugate for the Treatment of CEACAM5-positive Epithelial Tumors. Clin Cancer Res 2020; 26:6589-6599. [PMID: 33046521 DOI: 10.1158/1078-0432.ccr-19-4051] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 08/04/2020] [Accepted: 10/06/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) is a glycoprotein that has limited expression in normal adult tissues, but is overexpressed in carcinomas of the gastrointestinal tract, the genitourinary and respiratory systems, and breast cancer. As such, CEACAM5 is an attractive target for antibody-based therapies designed to selectively deliver cytotoxic drugs to certain epithelial tumors. Here, we describe preclinical data for a novel antibody-drug conjugate (ADC), SAR408701, which consists of an anti-CEACAM5 antibody (SAR408377) coupled to a maytansinoid agent DM4 via a cleavable linker. EXPERIMENTAL DESIGN The specificity and binding affinity of SAR408701 to human and cynomolgus monkey CEACAM5 were tested in vitro. The cytotoxic activity of SAR408701 was assessed in CEACAM5-expressing tumor cell lines and using patient-derived xenograft mouse models of CEACAM5-positive tumors. Pharmacokinetic-pharmacodynamic and pharmacokinetic-efficacy relationships were established. SAR408701 toxicity was evaluated in cynomolgus monkey. RESULTS SAR408701 bound selectively to human and cynomolgus monkey CEACAM5 with similar apparent Kd values (0.017 nmol/L and 0.024 nmol/L, respectively). Both in vitro and in vivo evaluations showed that SAR408701 has cytotoxic activity, leading to in vivo efficacy in single and repeated dosing. Single doses of SAR408701 induced significant increases in the tumor expression of phosphorylated histone H3, confirming the tubulin-targeting mechanism of action. The overall toxicity profile of SAR408701 in cynomolgus monkey was similar to that observed after intravenous administration of DM4 alone. CONCLUSIONS On the basis of these preclinical data, the ADC SAR408701 is a promising candidate for development as a potential treatment for patients with CEACAM5-positive tumors.
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12
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Hänske J, Hammacher T, Grenkowitz F, Mansfeld M, Dau TH, Maksimov P, Friedrich C, Zimmermann W, Kammerer R. Natural selection supports escape from concerted evolution of a recently duplicated CEACAM1 paralog in the ruminant CEA gene family. Sci Rep 2020; 10:3404. [PMID: 32099040 PMCID: PMC7042247 DOI: 10.1038/s41598-020-60425-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 01/31/2020] [Indexed: 11/24/2022] Open
Abstract
Concerted evolution is often observed in multigene families such as the CEA gene family. As a result, sequence similarity of paralogous genes is significantly higher than expected from their evolutionary distance. Gene conversion, a “copy paste” DNA repair mechanism that transfers sequences from one gene to another and homologous recombination are drivers of concerted evolution. Nevertheless, some gene family members escape concerted evolution and acquire sufficient sequence differences that orthologous genes can be assigned in descendant species. Reasons why some gene family members can escape while others are captured by concerted evolution are poorly understood. By analyzing the entire CEA gene family in cattle (Bos taurus) we identified a member (CEACAM32) that was created by gene duplication and cooption of a unique transmembrane domain exon in the most recent ancestor of ruminants. CEACAM32 shows a unique, testis-specific expression pattern. Phylogenetic analysis indicated that CEACAM32 is not involved in concerted evolution of CEACAM1 paralogs in ruminants. However, analysis of gene conversion events revealed that CEACAM32 is subject to gene conversion but remarkably, these events are found in the leader exon and intron sequences but not in exons coding for the Ig-like domains. These findings suggest that natural selection hinders gene conversion affecting protein sequences of the mature protein and thereby support escape of CEACAM32 from concerted evolution.
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Affiliation(s)
- Jana Hänske
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany.,Landesuntersuchungsanstalt für das Gesundheits- und Veterinärwesen Sachsen, Dresden, Germany
| | - Tim Hammacher
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany
| | - Franziska Grenkowitz
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany
| | - Martin Mansfeld
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany
| | - Tung Huy Dau
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany
| | - Pavlo Maksimov
- Institute of Epidemiology, Friedrich-Loeffler-Institute, Greifswald - InselRiems, Germany
| | - Christin Friedrich
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany.,Institute of Systems Immunology, University of Würzburg, Würzburg, Germany
| | - Wolfgang Zimmermann
- Tumor Immunology Laboratory, LIFE Center, Department of Urology, Ludwig-Maximilians-University, Munich, Germany
| | - Robert Kammerer
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald - Insel Riems, Germany.
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13
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Arévalo L, Campbell P. Placental effects on the maternal brain revealed by disrupted placental gene expression in mouse hybrids. Proc Biol Sci 2020; 287:20192563. [PMID: 31937228 PMCID: PMC7003458 DOI: 10.1098/rspb.2019.2563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/11/2019] [Indexed: 12/11/2022] Open
Abstract
The mammalian placenta is both the physical interface between mother and fetus, and the source of endocrine signals that target the maternal hypothalamus, priming females for parturition, lactation and motherhood. Despite the importance of this connection, the effects of altered placental signalling on the maternal brain are insufficiently studied. Here, we show that placental dysfunction alters gene expression in the maternal brain, with the potential to affect maternal behaviour. Using a cross between the house mouse and the Algerian mouse, in which hybrid placental development is abnormal, we sequenced late-gestation placental and maternal medial preoptic area transcriptomes and quantified differential expression and placenta-maternal brain co-expression between normal and hybrid pregnancies. The expression of Fmn1 and Drd3 was significantly altered in the brains of females exposed to hybrid placentas. Most strikingly, expression patterns of placenta-specific gene families and Drd3 in the brains of house mouse females carrying hybrid litters matched those of female Algerian mice, the paternal species in the cross. Our results indicate that the paternally derived placental genome can influence the expression of maternal-fetal communication genes, including placental hormones, suggesting an effect of the offspring's father on the mother's brain.
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14
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Carcinoembryonic Cell Adhesion-Related Molecule 2 Regulates Insulin Secretion and Energy Balance. Int J Mol Sci 2019; 20:ijms20133231. [PMID: 31266142 PMCID: PMC6651791 DOI: 10.3390/ijms20133231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/12/2019] [Accepted: 06/25/2019] [Indexed: 12/13/2022] Open
Abstract
The Carcinoembryonic Antigen-Related Cell Adhesion Molecule (CEACAM) family of proteins plays a significant role in regulating peripheral insulin action by participating in the regulation of insulin metabolism and energy balance. In light of their differential expression, CEACAM1 regulates chiefly insulin extraction, whereas CEACAM2 appears to play a more important role in regulating insulin secretion and overall energy balance, including food intake, energy expenditure and spontaneous physical activity. We will focus this review on the role of CEACAM2 in regulating insulin metabolism and energy balance with an overarching goal to emphasize the importance of the coordinated regulatory effect of these related plasma membrane glycoproteins on insulin metabolism and action.
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15
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Kelleher M, Singh R, O'Driscoll CM, Melgar S. Carcinoembryonic antigen (CEACAM) family members and Inflammatory Bowel Disease. Cytokine Growth Factor Rev 2019; 47:21-31. [PMID: 31133507 DOI: 10.1016/j.cytogfr.2019.05.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 05/15/2019] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel disease (IBD), encompassing Crohn's disease (CD) and ulcerative colitis (UC), is a chronic intestinal inflammatory condition with increasing incidence worldwide and whose pathogenesis remains largely unknown. The collected evidence indicates that genetic, environmental and microbial factors and a dysregulated immune response are responsible for the disease. IBD has an early onset and long term sufferers present a higher risk of developing colitis associated cancer (CAC). The carcinoembryonic antigen-related adhesion molecules (CEACAM) are a subgroup of the CEA family, found in a range of different cell types and organs including epithelial cells in the intestine. They can act as intercellular adhesions molecules for e.g. bacteria and soluble antigens. CEACAMs are involved in a number of different processes including cell adhesion, proliferation, differentiation and tumour suppression. Some CEACAMs such as CEACAM1, CEACAM5 and CEACAM6 are highly associated with cancer and are even recognised as valid clinical markers for certain cancer forms. However, their role in IBD pathogenesis is less understood. The purpose of this review is to provide a comprehensive summary of published literature on CEACAMs and intestinal inflammation (IBD). The interactions between CEACAMs and bacteria adhesion in relation to IBD pathophysiology will be addressed and potential new therapeutic and diagnostic opportunities will be identified.
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Affiliation(s)
- Maebh Kelleher
- APC Microbiome Ireland, University College Cork, Cork, T12YT20, Ireland; Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, T12YT20, Ireland.
| | - Raminder Singh
- APC Microbiome Ireland, University College Cork, Cork, T12YT20, Ireland; Department of Medicine, University College Cork, Cork, T12YT20, Ireland.
| | - Caitriona M O'Driscoll
- Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, T12YT20, Ireland.
| | - Silvia Melgar
- APC Microbiome Ireland, University College Cork, Cork, T12YT20, Ireland.
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16
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Ghazarian H, Hu W, Mao A, Nguyen T, Vaidehi N, Sligar S, Shively JE. NMR analysis of free and lipid nanodisc anchored CEACAM1 membrane proximal peptides with Ca 2+/CaM. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:787-797. [PMID: 30639287 DOI: 10.1016/j.bbamem.2019.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/16/2018] [Accepted: 01/08/2019] [Indexed: 11/28/2022]
Abstract
CEACAM1, a homotypic transmembrane receptor with 12 or 72 amino acid cytosolic domain isoforms, is converted from inactive cis-dimers to active trans-dimers by calcium-calmodulin (Ca2+/CaM). Previously, the weak binding of Ca2+/CaM to the human 12 AA cytosolic domain was studied using C-terminal anchored peptides. We now show the binding of 15N labeled Phe-454 cytosolic domain peptides in solution or membrane anchored using NMR demonstrates a significant role for the lipid bilayer. Although binding is increased by the mutation Phe454Ala, this mutation was previously shown to abrogate actin binding. On the other hand, Ca2+/CaM binding is abrogated by phosphorylation of nearby Thr-457, a post-translation modification required for actin binding and subsequent in vitro lumen formation. Binding of Ca2+/CaM to a membrane proximal peptide from the long 72 AA cytosolic domain anchored to lipid nanodiscs was very weak compared to lipid free conditions, suggesting membrane specific effects between the two isoforms. NMR analysis of 15N labeled Ca2+/CaM with unlabeled peptides showed the C-lobe of Ca2+/CaM is involved in peptide interactions, and hydrophobic residues such as Met-109, Val-142 and Met-144 play important roles in binding peptide. This information was incorporated into transmembrane models of CEACAM1 binding to Ca2+/CaM. The lack of Ca2+/CaM binding to phosphorylated Thr-457, a residue we have previously shown to be phosphorylated by CaMK2D, also dependent on Ca2+/CaM, suggests stepwise binding of the cytosolic domain first to Ca2+/CaM and then to actin.
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Affiliation(s)
- Haike Ghazarian
- Department of Molecular Imaging and Therapy, Diabetes, Metabolism and Research Institute of City of Hope, 1450 East Duarte Road, Duarte, CA 91010, United States of America; City of Hope Irell and Manella Graduate School of Biological Sciences, 1450 East Duarte road, Duarte, CA 91010, United States of America
| | - Weidong Hu
- Department of Molecular Imaging and Therapy, Diabetes, Metabolism and Research Institute of City of Hope, 1450 East Duarte Road, Duarte, CA 91010, United States of America
| | - Allen Mao
- Department of Molecular Imaging and Therapy, Diabetes, Metabolism and Research Institute of City of Hope, 1450 East Duarte Road, Duarte, CA 91010, United States of America
| | - Tung Nguyen
- Department of Molecular Imaging and Therapy, Diabetes, Metabolism and Research Institute of City of Hope, 1450 East Duarte Road, Duarte, CA 91010, United States of America
| | - Nagarajan Vaidehi
- Department of Molecular Imaging and Therapy, Diabetes, Metabolism and Research Institute of City of Hope, 1450 East Duarte Road, Duarte, CA 91010, United States of America
| | - Stephen Sligar
- Department of Biochemistry, University of Illinois, Urbana, IL 61801, United States of America
| | - John E Shively
- Department of Molecular Imaging and Therapy, Diabetes, Metabolism and Research Institute of City of Hope, 1450 East Duarte Road, Duarte, CA 91010, United States of America.
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18
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Bonsor DA, Sundberg EJ. Roles of Adhesion to Epithelial Cells in Gastric Colonization by Helicobacter pylori. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1149:57-75. [PMID: 31016628 DOI: 10.1007/5584_2019_359] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Helicobacter pylori adherence to host epithelial cells is essential for its survival against the harsh conditions of the stomach and for successful colonization. Adherence of H. pylori is achieved through several related families of outer membrane proteins and proteins of a type IV secretion system (T4SS), which bridge H. pylori to host cells through protein-protein and other protein-ligand interactions. Local environmental conditions such as cell type, available host cell surface proteins and/or ligands, as well as responses by the host immune system force H. pylori to alter expression of these proteins to adapt quickly to the local environment in order to colonize and survive. Some of these host-pathogen interactions appear to function in a "catch-and-release" manner, regulated by reversible binding at varying pH and allowing H. pylori to detach itself from cells or debris sloughed off the gastric epithelial lining in order to return for subsequent productive interactions. Other interactions between bacterial adhesin proteins and host adhesion molecules, however, appear to function as a committed step in certain pathogenic processes, such as translocation of the CagA oncoprotein through the H. pylori T4SS and into host gastric epithelial cells. Understanding these adhesion interactions is critical for devising new therapeutic strategies, as they are responsible for the earliest stage of infection and its maintenance. This review will discuss the expression and regulation of several outer membrane proteins and CagL, how they engage their known host cell protein/ligand targets, and their effects on clinical outcome.
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Affiliation(s)
- Daniel A Bonsor
- Institute of Human Virology, University of Maryland School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Eric J Sundberg
- Institute of Human Virology, University of Maryland School of Medicine, University of Maryland, Baltimore, MD, USA. .,Department of Medicine, University of Maryland School of Medicine, University of Maryland, Baltimore, MD, USA. .,Department of Microbiology and Immunology, University of Maryland School of Medicine, University of Maryland, Baltimore, MD, USA.
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19
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Rebl A, Verleih M, Nipkow M, Altmann S, Bochert R, Goldammer T. Gradual and Acute Temperature Rise Induces Crossing Endocrine, Metabolic, and Immunological Pathways in Maraena Whitefish ( Coregonus maraena). Front Genet 2018; 9:241. [PMID: 30073015 PMCID: PMC6060367 DOI: 10.3389/fgene.2018.00241] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/19/2018] [Indexed: 12/17/2022] Open
Abstract
The complex and still poorly understood nature of thermoregulation in various fish species complicates the determination of the physiological status on the basis of diagnostic marker genes and indicative molecular pathways. The present study aimed to compare the physiological impacts of both gradual and acute temperature rise from 18 to 24°C on maraena whitefish in aquaculture. Microarray-based transcriptome profiles in the liver, spleen and kidney of heat-stressed maraena whitefish revealed the modulation of a significantly higher number of genes in those groups exposed to gradually rising temperatures compared with the acutely stressed groups, which might reflect early adaptation mechanisms. Moreover, we suggest a common set of 11 differentially expressed genes that indicate thermal stress induced by gradual or acute temperature rise in the three selected tissues. Besides the two pathways regulated in both data sets unfolded protein response and aldosterone signaling in epithelial cells, we identified unique tissue- and stress type-specific pathways reflecting the crossroads between signal transduction, metabolic and immunologic pathways to cope with thermal stress. In addition, comparing lists of differentially regulated genes with meta-analyzed published data sets revealed that “acute temperature rise”-responding genes that encode members of the HSP70, HSP90, and HSP40 families; their functional homologs; co-chaperones and stress-signal transducers are well-conserved across different species, tissues and/or cell types and experimental approaches.
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Affiliation(s)
- Alexander Rebl
- Fish Genetics Unit, Institute of Genome Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Marieke Verleih
- Fish Genetics Unit, Institute of Genome Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Mareen Nipkow
- Fish Genetics Unit, Institute of Genome Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Simone Altmann
- Fish Genetics Unit, Institute of Genome Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Ralf Bochert
- Research Station Aquaculture Born, Institute of Fisheries, Mecklenburg-Vorpommern Research Centre for Agriculture and Fisheries (LFA MV), Born, Germany
| | - Tom Goldammer
- Fish Genetics Unit, Institute of Genome Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
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20
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Goodyear RJ, Richardson GP. Structure, Function, and Development of the Tectorial Membrane: An Extracellular Matrix Essential for Hearing. Curr Top Dev Biol 2018; 130:217-244. [PMID: 29853178 DOI: 10.1016/bs.ctdb.2018.02.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The tectorial membrane is an extracellular matrix that lies over the apical surface of the auditory epithelia in the inner ears of reptiles, birds, and mammals. Recent studies have shown it is composed of a small set of proteins, some of which are only produced at high levels in the ear and many of which are the products of genes that, when mutated, cause nonsyndromic forms of human hereditary deafness. Quite how the proteins of the tectorial membrane are assembled within the lumen of the inner ear to form a structure that is precisely regulated in its size and physical properties along the length of a tonotopically organized hearing organ is a question that remains to be fully answered. In this brief review we will summarize what is known thus far about the structure, protein composition, and function of the tectorial membrane in birds and mammals, describe how the tectorial membrane develops, and discuss major events that have occurred during the evolution of this extracellular matrix.
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Affiliation(s)
- Richard J Goodyear
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Brighton, United Kingdom
| | - Guy P Richardson
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Brighton, United Kingdom.
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21
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Mißbach S, Aleksic D, Blaschke L, Hassemer T, Lee KJ, Mansfeld M, Hänske J, Handler J, Kammerer R. Alternative splicing after gene duplication drives CEACAM1-paralog diversification in the horse. BMC Evol Biol 2018; 18:32. [PMID: 29544443 PMCID: PMC5856374 DOI: 10.1186/s12862-018-1145-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 03/02/2018] [Indexed: 02/03/2023] Open
Abstract
Background The CEA gene family is one of the most rapidly evolving gene families in the human genome. The founder gene of the family is thought to be an ancestor of the inhibitory immune checkpoint molecule CEACAM1. Comprehensive analyses of mammalian genomes showed that the CEA gene family is subject to tremendous gene family expansion and contraction events in different mammalian species. While in some species (e.g. rabbits) less than three CEACAM1 related genes exist, were in others (certain microbat species) up to 100 CEACAM1 paralogs identified. We have recently reported that the horse has also an extended CEA gene family. Since mechanisms of gene family expansion and diversification are not well understood we aimed to analyze the equine CEA gene family in detail. Results We found that the equine CEA gene family contains 17 functional CEACAM1-related genes. Nine of them were secreted molecules and eight CEACAMs contain transmembrane and cytoplasmic domain exons, the latter being in the focus of the present report. Only one (CEACAM41) gene has exons coding for activating signaling motifs all other CEACAM1 paralogs contain cytoplasmic exons similar to that of the inhibitory receptor CEACAM1. However, cloning of cDNAs showed that only one CEACAM1 paralog contain functional immunoreceptor tyrosine-based inhibitory motifs in its cytoplasmic tail. Three receptors have acquired a stop codon in the transmembrane domain and two have lost their inhibitory motifs due to alternative splicing events. In addition, alternative splicing eliminated the transmembrane exon sequence of the putative activating receptor, rendering it to a secreted molecule. Transfection of eukaryotic cells with FLAG-tagged alternatively spliced CEACAMs indicates that they can be expressed in vivo. Thus detection of CEACAM41 mRNA in activated PBMC suggests that CEACAM41 is secreted by lymphoid cells upon activation. Conclusions The results of our study demonstrate that alternative splicing after gene duplication is a potent mechanism to accelerate functional diversification of the equine CEA gene family members. This potent mechanism has created novel CEACAM receptors with unique signaling capacities and secreted CEACAMs which potentially enables equine lymphoid cells to control distantly located immune cells.
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Affiliation(s)
- Sophie Mißbach
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany.,Plattform Degenerative Erkrankungen, Deutsches Primatenzentrum GmbH, Goettingen, Germany
| | - Denis Aleksic
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany
| | - Lisa Blaschke
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany
| | - Timm Hassemer
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany.,Department of Cellular Biochemistry, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Kyung Jin Lee
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Martin Mansfeld
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany
| | - Jana Hänske
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany
| | - Johannes Handler
- Clinic for Horses, Veterinary Faculty, Freie Universität Berlin, Oertzenweg 19b, D-14163, Berlin, Germany
| | - Robert Kammerer
- Institute of Immunology, Friedrich-Loeffler-Institut, Suedufer 10, Greifswald, Insel Riems, Germany. .,Friedrich-Loeffler-Institut, Bundesforschungsinstitut für Tiergesundheit, Federal Research Institute for Animal Health, Südufer 10, D, 17493, Greifswald, Insel Riems, Germany.
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22
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Rizeq B, Zakaria Z, Ouhtit A. Towards understanding the mechanisms of actions of carcinoembryonic antigen-related cell adhesion molecule 6 in cancer progression. Cancer Sci 2018; 109:33-42. [PMID: 29110374 PMCID: PMC5765285 DOI: 10.1111/cas.13437] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 12/21/2022] Open
Abstract
Human carcinoembryonic antigen (CEA) is the prototypic member of a family of highly related cell surface glycoproteins that includes carcinoembryonic antigen‐related cell adhesion molecule 6 (CEACAM6) and others. CEACAM6 (formerly NCA), which belongs to the immunoglobulin superfamily, is a cell adhesion protein of the CEA family. It is normally expressed on the epithelial surfaces and on the surface of myeloid cells (CD66c). CEACAM6 is a multi‐functional glycoprotein that mediates homotypic binding with other CEA family members and heterotypic binding with integrin receptors. It functions by organizing tissue architecture and regulating different signal transduction, while aberrant expression leads to the development of human malignancies. It was first discovered in proliferating cells of adenomas and hyperplastic polyps in comparison to benign colonic tissue when overexpressed on the surface of various cell types in model systems. CEACAM6 functions as a pan‐inhibitor of cell differentiation and cell polarization, and it also causes distortion of tissue architecture. Moreover, overexpression of CEACAM6 modulates cancer progression through aberrant cell differentiation, anti‐apoptosis, cell growth and resistance to therapeutic agents. In addition, CEACAM6 overexpression in multiple malignancies promotes cell invasion and metastasis, thereby representing an acquired advantage of tumor cells directly responsible for an invasive phenotype. This review focuses on the findings supporting the mechanisms of actions linking the oncogenic potential of CEACAM6 to the onset of cancer progression and pathogenesis, especially in breast cancer, and to validating CEACAM6 as a target to pave the way towards the design of efficient therapeutic strategies against breast cancer.
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Affiliation(s)
- Balsam Rizeq
- Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, Doha, Qatar
| | - Zain Zakaria
- Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, Doha, Qatar
| | - Allal Ouhtit
- Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, Doha, Qatar
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23
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Ghanem SS, Muturi HT, DeAngelis AM, Hu J, Kulkarni RN, Heinrich G, Najjar SM. Age-dependent insulin resistance in male mice with null deletion of the carcinoembryonic antigen-related cell adhesion molecule 2 gene. Diabetologia 2017; 60:1751-1760. [PMID: 28567513 PMCID: PMC5709176 DOI: 10.1007/s00125-017-4307-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/21/2017] [Indexed: 10/19/2022]
Abstract
AIMS/HYPOTHESIS Cc2 -/- mice lacking the gene encoding the carcinoembryonic-antigen-related cell adhesion molecule 2 (Cc2 [also known as Ceacam2]) exhibit hyperphagia that leads to obesity and insulin resistance. This starts at 2 months of age in female mice. Male mutants maintain normal body weight and insulin sensitivity until the last age previously examined (7-8 months), owing to increased sympathetic tone to white adipose tissue and energy expenditure. The current study investigates whether insulin resistance develops in mutant male mice at a later age and whether this is accompanied by changes in insulin homeostasis. METHODS Insulin response was assessed by insulin and glucose tolerance tests. Energy balance was analysed by indirect calorimetry. RESULTS Male Cc2 -/- mice developed overt metabolic abnormalities at about 9 months of age. These include elevated global fat mass, hyperinsulinaemia and insulin resistance (as determined by glucose and insulin intolerance, fed hyperglycaemia and decreased insulin signalling pathways). Pair-feeding experiments showed that insulin resistance resulted from hyperphagia. Indirect calorimetry demonstrated that older mutant male mice had compromised energy expenditure. Despite increased insulin secretion caused by Cc2 deletion, chronic hyperinsulinaemia did not develop in mutant male mice until about 9 months of age, at which point insulin clearance began to decline substantially. This was probably mediated by a marked decrease in hepatic CEACAM1 expression. CONCLUSIONS/INTERPRETATION The data demonstrate that at about 9 months of age, Cc2 -/- male mice develop a reduction in energy expenditure and energy imbalance which, combined with a progressive decrease in CEACAM1-dependent hepatic insulin clearance, causes chronic hyperinsulinaemia and sustained age-dependent insulin resistance. This represents a novel mechanistic underpinning of age-related impairment of hepatic insulin clearance.
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Affiliation(s)
- Simona S Ghanem
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA
| | - Harrison T Muturi
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA
| | - Anthony M DeAngelis
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA
| | - Jiang Hu
- Section on Islet Cell and Regenerative Biology, Joslin Diabetes Center and Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Harvard Stem Cell Institute, Boston, MA, USA
| | - Rohit N Kulkarni
- Section on Islet Cell and Regenerative Biology, Joslin Diabetes Center and Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Harvard Stem Cell Institute, Boston, MA, USA
| | - Garrett Heinrich
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA
- Diabetes Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, 45701-2979, USA
| | - Sonia M Najjar
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA.
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA.
- Diabetes Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, 45701-2979, USA.
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24
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Kotani T, Murata Y, Saito Y, Matozaki T. Future therapeutic potential of SAP-1 in inflammatory bowel diseases. Expert Rev Gastroenterol Hepatol 2016; 10:1313-1315. [PMID: 27705005 DOI: 10.1080/17474124.2016.1245144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Takenori Kotani
- a Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology , Kobe University Graduate School of Medicine , Kobe , Japan
| | - Yoji Murata
- a Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology , Kobe University Graduate School of Medicine , Kobe , Japan
| | - Yasuyuki Saito
- a Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology , Kobe University Graduate School of Medicine , Kobe , Japan
| | - Takashi Matozaki
- a Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology , Kobe University Graduate School of Medicine , Kobe , Japan
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25
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Ravi M, Mohan DK, Sahu B. Protein Expression Differences of 2-Dimensional and Progressive 3-Dimensional Cell Cultures of Non-Small-Cell-Lung-Cancer Cell Line H460. J Cell Biochem 2016; 118:1648-1652. [PMID: 27859572 DOI: 10.1002/jcb.25800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 11/16/2016] [Indexed: 11/10/2022]
Abstract
Non-small-cell-lung-cancer (NSCLC) constitutes about 75-80% of lung cancers. The challenge to tackle cancers is in early diagnosis and arriving at safer therapeutic options. In vitro studies using cancer cell lines continue to contribute significantly in understanding cancers. Cell culture methods have evolved and the recent developments in 3 dimensional (3D) cell cultures are inducing greater resemblance of the in vitro cultured cells with in vivo conditions. In this study, we established 3D aggregates of H460 cell line on agarose hydrogels and studied the protein expression differences among cells grown as monolayers (2D) and the progressively developing 3D aggregates from days 2 to 10. Analysis included matching of those proteins expressed by the developing aggregates and the available literature on progressing tumors in vivo. J. Cell. Biochem. 118: 1648-1652, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Maddaly Ravi
- Faculty of Biomedical Sciences, Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, 600116, India
| | - Divya K Mohan
- Faculty of Biomedical Sciences, Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, 600116, India
| | - Bellona Sahu
- Faculty of Biomedical Sciences, Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, 600116, India
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26
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Martin JN, Ball LM, Solomon TL, Dewald AH, Criss AK, Columbus L. Neisserial Opa Protein-CEACAM Interactions: Competition for Receptors as a Means of Bacterial Invasion and Pathogenesis. Biochemistry 2016; 55:4286-94. [PMID: 27442026 DOI: 10.1021/acs.biochem.6b00124] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Carcino-embryonic antigen-like cellular adhesion molecules (CEACAMs), members of the immunoglobulin superfamily, are responsible for cell-cell interactions and cellular signaling events. Extracellular interactions with CEACAMs have the potential to induce phagocytosis, as is the case with pathogenic Neisseria bacteria. Pathogenic Neisseria species express opacity-associated (Opa) proteins, which interact with a subset of CEACAMs on human cells, and initiate the engulfment of the bacterium. We demonstrate that recombinant Opa proteins reconstituted into liposomes retain the ability to recognize and interact with CEACAMs in vitro but do not maintain receptor specificity compared to that of Opa proteins natively expressed by Neisseria gonorrhoeae. We report that two Opa proteins interact with CEACAMs with nanomolar affinity, and we hypothesize that this high affinity is necessary to compete with the native CEACAM homo- and heterotypic interactions in the host. Understanding the mechanisms of Opa protein-receptor recognition and engulfment enhances our understanding of Neisserial pathogenesis. Additionally, these mechanisms provide insight into how human cells that are typically nonphagocytic can utilize CEACAM receptors to internalize exogenous matter, with implications for the targeted delivery of therapeutics and development of imaging agents.
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Affiliation(s)
- Jennifer N Martin
- Department of Chemistry and ‡Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, Virginia 22903, United States
| | - Louise M Ball
- Department of Chemistry and ‡Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, Virginia 22903, United States
| | - Tsega L Solomon
- Department of Chemistry and ‡Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, Virginia 22903, United States
| | - Alison H Dewald
- Department of Chemistry and ‡Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, Virginia 22903, United States
| | - Alison K Criss
- Department of Chemistry and ‡Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, Virginia 22903, United States
| | - Linda Columbus
- Department of Chemistry and ‡Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, Virginia 22903, United States
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27
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CEACAM1 is overexpressed in oral tumors and related to tumorigenesis. Med Mol Morphol 2016; 50:42-51. [PMID: 27464654 DOI: 10.1007/s00795-016-0147-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 07/19/2016] [Indexed: 10/21/2022]
Abstract
Carcinoembryonic antigen-related adhesion molecule 1 (CEACAM1) is a type 1 transmembrane glycoprotein belonging to the CEA family, which has been known to exist as either soluble forms in body fluids or membrane-bound forms on the cell surface. Aberrant CEACAM1 expression is associated with tumorigenesis and has been reported in a variety of human tumors, especially malignancies. The aim of this study is to determine the expression of CEACAM1 in oral tumors, trying to study CEACAM1 different expressions as a function of histotype. CEACAM1 expression was observed by immunohistochemistry (IHC) with mouse anti-human antibody for CEACAM1. IHC was performed using avidin-biotin-diaminobenzidine staining. The results were expressed as average score ± SD (0 = negative/8 = highest) for each histotype. Oral tumors expressed more CEACAM1 than normal tissues including squamous and salivary epithelia (P < 0.05). In malignancies, the squamous cell carcinoma overexpressed CEACAM1, compared to well-differentiated squamous cell with more membranous expression; the intermediately and poorly differentiated squamous cell carcinoma showed more cytoplasmic expression (P < 0.05). In addition, the salivary tumors significantly expressed more CEACAM1 than squamous cell carcinoma (P < 0.05). So, we thought oral tumors overexpressed CEACAM1 and the cytoplasmic CEACAM1 might be involved in tumorigenesis, and also CEACAM1 might be regarded as a marker of salivary glandular tumors.
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28
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Mi Y, Coonce M, Fiete D, Steirer L, Dveksler G, Townsend RR, Baenziger JU. Functional Consequences of Mannose and Asialoglycoprotein Receptor Ablation. J Biol Chem 2016; 291:18700-17. [PMID: 27405760 DOI: 10.1074/jbc.m116.738948] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Indexed: 11/06/2022] Open
Abstract
The mannose receptor (ManR, Mrc1) and asialoglycoprotein receptor (ASGR, Asgr1 and Asgr2) are highly abundant endocytic receptors expressed by sinusoidal endothelial cells and parenchymal cells in the liver, respectively. We genetically manipulated either receptor individually or in combination, revealing phenotypic changes in female and male mice associated with changes in circulating levels of many glycoproteins. Both receptors rise and fall in response to progesterone during pregnancy. Thirty percent of Asgr2(-/-) and 65% of Mrc1(-/-)Asgr2(-/-) mice are unable to initiate parturition at the end of pregnancy, whereas Mrc1(-/-) mice initiate normally. Twenty five percent of Mrc1(-/-)Asgr2(-/-) male mice develop priapism when mating due to thrombosis of the penile vein, but neither Mrc1(-/-) nor Asgr2(-/-) mice do so. The half-life for luteinizing hormone (LH) clearance increases in Mrc1(-/-) and Mrc1(-/-)Asgr2(-/-) mice but not in Asgr2(-/-) mice; however, LH and testosterone are elevated in all three knockouts. The ManR clears LH thus regulating testosterone production, whereas the ASGR appears to mediate clearance of an unidentified glycoprotein that increases LH levels. More than 40 circulating glycoproteins are elevated >3.0-fold in pregnant Mrc1(-/-)Asgr2(-/-) mice. Pregnancy-specific glycoprotein 23, undetectable in WT mice (<50 ng/ml plasma), reaches levels of 1-10 mg/ml in the plasma of Mrc1(-/-)Asgr2(-/-) and Asgr2(-/-) mice, indicating it is cleared by the ASGR. Elevation of multiple coagulation factors in Mrc1(-/-)Asgr2(-/-) mice may account for priapism seen in males. These male and female phenotypic changes underscore the key roles of the ManR and ASGR in controlling circulating levels of numerous glycoproteins critical for regulating reproductive hormones and blood coagulation.
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Affiliation(s)
- Yiling Mi
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Marcy Coonce
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Dorothy Fiete
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Lindsay Steirer
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Gabriela Dveksler
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - R Reid Townsend
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Jacques U Baenziger
- From the Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
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29
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Aleksic D, Blaschke L, Mißbach S, Hänske J, Weiß W, Handler J, Zimmermann W, Cabrera-Sharp V, Read JE, de Mestre AM, O'Riordan R, Moore T, Kammerer R. Convergent evolution of pregnancy-specific glycoproteins in human and horse. Reproduction 2016; 152:171-84. [PMID: 27280409 DOI: 10.1530/rep-16-0236] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 06/07/2016] [Indexed: 01/13/2023]
Abstract
Pregnancy-specific glycoproteins (PSGs) are members of the carcinoembryonic antigen cell adhesion molecule (CEACAM) family that are secreted by trophoblast cells. PSGs may modulate immune, angiogenic and platelet responses during pregnancy. Until now, PSGs are only found in species that have a highly invasive (hemochorial) placentation including humans, mice and rats. Surprisingly, analyzing the CEACAM gene family of the horse, which has a non-invasive epitheliochorial placenta, with the exception of the transient endometrial cups, we identified equine CEACAM family members that seem to be related to PSGs of rodents and primates. We identified seven genes that encode secreted PSG-like CEACAMs Phylogenetic analyses indicate that they evolved independently from an equine CEACAM1-like ancestor rather than from a common PSG-like ancestor with rodents and primates. Significantly, expression of PSG-like genes (CEACAM44, CEACAM48, CEACAM49 and CEACAM55) was found in non-invasive as well as invasive trophoblast cells such as purified chorionic girdle cells and endometrial cup cells. Chorionic girdle cells are highly invasive trophoblast cells that invade the endometrium of the mare where they form endometrial cups and are in close contact with maternal immune cells. Therefore, the microenvironment of invasive equine trophoblast cells has striking similarities to the microenvironment of trophoblast cells in hemochorial placentas, suggesting that equine PSG-like CEACAMs and rodent and primate PSGs have undergone convergent evolution. This is supported by our finding that equine PSG-like CEACAM49 exhibits similar activity to certain rodent and human PSGs in a functional assay of platelet-fibrinogen binding. Our results have implications for understanding the evolution of PSGs and their functions in maternal-fetal interactions.
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Affiliation(s)
- Denis Aleksic
- Institute of ImmunologyFriedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Lisa Blaschke
- Institute of ImmunologyFriedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Sophie Mißbach
- Institute of ImmunologyFriedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Jana Hänske
- Institute of ImmunologyFriedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Wiebke Weiß
- Institute of ImmunologyFriedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Johannes Handler
- Equine Center Bad SaarowFreie Universität Berlin, Bad Saarow, Germany
| | - Wolfgang Zimmermann
- Tumor Immunology LaboratoryLudwig-Maximilians-University, Munich, Germany Department of UrologyUniversity Hospital, Munich, Germany
| | - Victoria Cabrera-Sharp
- Department of Comparative Biomedical SciencesThe Royal Veterinary College, University of London, London, UK
| | - Jordan E Read
- Department of Comparative Biomedical SciencesThe Royal Veterinary College, University of London, London, UK
| | - Amanda M de Mestre
- Department of Comparative Biomedical SciencesThe Royal Veterinary College, University of London, London, UK
| | - Ronan O'Riordan
- School of Biochemistry and Cell BiologyUniversity College Cork, Cork, Ireland
| | - Tom Moore
- School of Biochemistry and Cell BiologyUniversity College Cork, Cork, Ireland
| | - Robert Kammerer
- Institute of ImmunologyFriedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
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30
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Heinrich G, Russo L, Castaneda TR, Pfeiffer V, Ghadieh HE, Ghanem SS, Wu J, Faulkner LD, Ergün S, McInerney MF, Hill JW, Najjar SM. Leptin Resistance Contributes to Obesity in Mice with Null Mutation of Carcinoembryonic Antigen-related Cell Adhesion Molecule 1. J Biol Chem 2016; 291:11124-32. [PMID: 27002145 DOI: 10.1074/jbc.m116.716431] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 01/28/2023] Open
Abstract
Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) promotes hepatic insulin clearance. Consistently, mice with null mutation of Ceacam1 (Cc1(-/-)) exhibit impaired insulin clearance with increased lipid production in liver and redistribution to white adipose tissue, leading to visceral obesity at 2 months of age. When the mutation is propagated on the C57/BL6J genetic background, total fat mass rises significantly with age, and glucose intolerance and systemic insulin resistance develop at 6 months of age. This study was carried out to determine the mechanisms underlying the marked increase in total fat mass in 6-month-old mutants. Indirect calorimetry analysis showed that Cc1(-/-) mice develop hyperphagia and a significant reduction in physical activity, in particular in the early hours of the dark cycle, during which energy expenditure is only slightly lower than in wild-type mice. They also exhibit increased triglyceride accumulation in skeletal muscle, due in part to incomplete fatty acid β-oxidation. Mechanistically, hypothalamic leptin signaling is reduced, as demonstrated by blunted STAT3 phosphorylation in coronal sections in response to an intracerebral ventricular injection of leptin. Hypothalamic fatty-acid synthase activity is also elevated in the mutants. Together, the data show that the increase in total fat mass in Cc1(-/-) mice is mainly attributed to hyperphagia and reduced spontaneous physical activity. Although the contribution of the loss of CEACAM1 from anorexigenic proopiomelanocortin neurons in the arcuate nucleus is unclear, leptin resistance and elevated hypothalamic fatty-acid synthase activity could underlie altered energy balance in these mice.
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Affiliation(s)
| | - Lucia Russo
- From the Center for Diabetes and Endocrine Research and
| | - Tamara R Castaneda
- From the Center for Diabetes and Endocrine Research and Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, Toledo, Ohio 43614
| | - Verena Pfeiffer
- the Institut für Anatomie und Zellbiologie, Universität Würzburg, 97070 Würzburg, Germany, and
| | | | | | - Jieshen Wu
- From the Center for Diabetes and Endocrine Research and
| | | | - Süleyman Ergün
- the Institut für Anatomie und Zellbiologie, Universität Würzburg, 97070 Würzburg, Germany, and
| | - Marcia F McInerney
- From the Center for Diabetes and Endocrine Research and Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, Toledo, Ohio 43614
| | | | - Sonia M Najjar
- From the Center for Diabetes and Endocrine Research and the Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio 45701
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31
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van Rees DJ, Szilagyi K, Kuijpers TW, Matlung HL, van den Berg TK. Immunoreceptors on neutrophils. Semin Immunol 2016; 28:94-108. [PMID: 26976825 PMCID: PMC7129252 DOI: 10.1016/j.smim.2016.02.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 12/12/2022]
Abstract
Neutrophil activities must be tightly controlled to maintain immune homeostasis. Activating and inhibitory receptors balance the outcome of immune cell activation. Immunoreceptors contain Ig-like extracellular domains and signal via ITAMs or ITIMs. Syk or SHP/SHIP mediate downstream signaling after immunoreceptor activation. Targeting immunoreceptors provides opportunities for therapeutic interventions.
Neutrophils play a critical role in the host defense against infection, and they are able to perform a variety of effector mechanisms for this purpose. However, there are also a number of pathological conditions, including autoimmunity and cancer, in which the activities of neutrophils can be harmful to the host. Thus the activities of neutrophils need to be tightly controlled. As in the case of other immune cells, many of the neutrophil effector functions are regulated by a series of immunoreceptors on the plasma membrane. Here, we review what is currently known about the functions of the various individual immunoreceptors and their signaling in neutrophils. While these immunoreceptors allow for the recognition of a diverse range of extracellular ligands, such as cell surface structures (like proteins, glycans and lipids) and extracellular matrix components, they commonly signal via conserved ITAM or ITIM motifs and their associated downstream pathways that depend on the phosphorylation of tyrosine residues in proteins and/or inositol lipids. This allows for a balanced homeostatic regulation of neutrophil effector functions. Given the number of available immunoreceptors and their fundamental importance for neutrophil behavior, it is perhaps not surprising that pathogens have evolved means to evade immune responses through some of these pathways. Inversely, some of these receptors evolved to specifically recognize these pathogens. Finally, some interactions mediated by immunoreceptors in neutrophils have been identified as promising targets for therapeutic intervention.
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Affiliation(s)
- Dieke J van Rees
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Katka Szilagyi
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Taco W Kuijpers
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Hanke L Matlung
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Timo K van den Berg
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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32
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Kammerer R, Herse F, Zimmermann W. Convergent Evolution Within CEA Gene Families in Mammals: Hints for Species-Specific Selection Pressures. Evol Biol 2016. [DOI: 10.1007/978-3-319-41324-2_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Ghanem SS, Heinrich G, Lester SG, Pfeiffer V, Bhattacharya S, Patel PR, DeAngelis AM, Dai T, Ramakrishnan SK, Smiley ZN, Jung DY, Lee Y, Kitamura T, Ergun S, Kulkarni RN, Kim JK, Giovannucci DR, Najjar SM. Increased Glucose-induced Secretion of Glucagon-like Peptide-1 in Mice Lacking the Carcinoembryonic Antigen-related Cell Adhesion Molecule 2 (CEACAM2). J Biol Chem 2015; 291:980-8. [PMID: 26586918 DOI: 10.1074/jbc.m115.692582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Indexed: 01/11/2023] Open
Abstract
Carcinoembryonic antigen-related cell adhesion molecule 2 (CEACAM2) regulates food intake as demonstrated by hyperphagia in mice with the Ceacam2 null mutation (Cc2(-/-)). This study investigated whether CEACAM2 also regulates insulin secretion. Ceacam2 deletion caused an increase in β-cell secretory function, as assessed by hyperglycemic clamp analysis, without affecting insulin response. Although CEACAM2 is expressed in pancreatic islets predominantly in non-β-cells, basal plasma levels of insulin, glucagon and somatostatin, islet areas, and glucose-induced insulin secretion in pooled Cc2(-/-) islets were all normal. Consistent with immunofluorescence analysis showing CEACAM2 expression in distal intestinal villi, Cc2(-/-) mice exhibited a higher release of oral glucose-mediated GLP-1, an incretin that potentiates insulin secretion in response to glucose. Compared with wild type, Cc2(-/-) mice also showed a higher insulin excursion during the oral glucose tolerance test. Pretreating with exendin(9-39), a GLP-1 receptor antagonist, suppressed the effect of Ceacam2 deletion on glucose-induced insulin secretion. Moreover, GLP-1 release into the medium of GLUTag enteroendocrine cells was increased with siRNA-mediated Ceacam2 down-regulation in parallel to an increase in Ca(2+) entry through L-type voltage-dependent Ca(2+) channels. Thus, CEACAM2 regulates insulin secretion, at least in part, by a GLP-1-mediated mechanism, independent of confounding metabolic factors.
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Affiliation(s)
- Simona S Ghanem
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Garrett Heinrich
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Sumona G Lester
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Verena Pfeiffer
- the Institut für Anatomie und Zellbiologie, Universität Würzburg, D-97070 Würzburg, Germany
| | - Sumit Bhattacharya
- Neurosciences, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, Ohio 43614
| | - Payal R Patel
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Anthony M DeAngelis
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Tong Dai
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Sadeesh K Ramakrishnan
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Zachary N Smiley
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
| | - Dae Y Jung
- the Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Yongjin Lee
- the Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Tadahiro Kitamura
- the Metabolic Signal Research Center, Institute for Molecular and Cellular Regulation, Gunma University, 371-8512 Gunma, Japan, and
| | - Suleyman Ergun
- the Institut für Anatomie und Zellbiologie, Universität Würzburg, D-97070 Würzburg, Germany
| | - Rohit N Kulkarni
- the Islet Cell and Regenerative Biology, Joslin Diabetes Center and Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215
| | - Jason K Kim
- the Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - David R Giovannucci
- Neurosciences, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, Ohio 43614
| | - Sonia M Najjar
- From the Center for Diabetes and Endocrine Research and Departments of Physiology and Pharmacology and
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Bonsor DA, Günther S, Beadenkopf R, Beckett D, Sundberg EJ. Diverse oligomeric states of CEACAM IgV domains. Proc Natl Acad Sci U S A 2015; 112:13561-6. [PMID: 26483485 PMCID: PMC4640789 DOI: 10.1073/pnas.1509511112] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Carcinoembryonic antigen-related cell adhesion molecules (CEACAMs) comprise a large family of cell surface adhesion molecules that bind to themselves and other family members to carry out numerous cellular functions, including proliferation, signaling, differentiation, tumor suppression, and survival. They also play diverse and significant roles in immunity and infection. The formation of CEACAM oligomers is caused predominantly by interactions between their N-terminal IgV domains. Although X-ray crystal structures of CEACAM IgV domain homodimers have been described, how CEACAMs form heterodimers or remain monomers is poorly understood. To address this key aspect of CEACAM function, we determined the crystal structures of IgV domains that form a homodimeric CEACAM6 complex, monomeric CEACAM8, and a heterodimeric CEACAM6-CEACAM8 complex. To confirm and quantify these interactions in solution, we used analytical ultracentrifugation to measure the dimerization constants of CEACAM homodimers and isothermal titration calorimetry to determine the thermodynamic parameters and binding affinities of CEACAM heterodimers. We found the CEACAM6-CEACAM8 heterodimeric state to be substantially favored energetically relative to the CEACAM6 homodimer. Our data provide a molecular basis for the adoption of the diverse oligomeric states known to exist for CEACAMs and suggest ways in which CEACAM6 and CEACAM8 regulate the biological functions of one another, as well as of additional CEACAMs with which they interact, both in cis and in trans.
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Affiliation(s)
- Daniel A Bonsor
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Sebastian Günther
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Robert Beadenkopf
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Dorothy Beckett
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Eric J Sundberg
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201; Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201; Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201
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Li N, Yang JY, Wang XY, Wang HT, Guan BX, Zhou CJ. Carcinoembryonic antigen-related cell adhesion molecule 1 is expressed and as a function histotype in ovarian tumors. Ann Diagn Pathol 2015; 20:7-12. [PMID: 26653024 DOI: 10.1016/j.anndiagpath.2015.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 10/12/2015] [Indexed: 10/22/2022]
Abstract
Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) is a cell-cell adhesion receptor and is implicated in several cellular functions. It is rarely reported in ovarian tumors. The aim of this study is to determine the expression of CEACAM1 in ovarian tumors, trying to see whether CEACAM1 has different expression patterns as a function of histotype. Antigen expression was examined by immunohistochemistry with mouse anti-human antibody for CEACAM1. Immunohistochemistry was performed using avidin-biotin-diaminobenzide staining. The results were expressed as average score ± SD (0, negative; 8, highest) for each histotype. In ovarian tumors, the benign serous and mucinous cystadenoma negatively or weakly expressed CEACAM1, the malignant epithelial tumors strongly expressed CEACAM1, and there was significant difference between benign epithelial tumor and adenocarcinoma (P < .05). The well-differentiated serous adenocarcinoma expressed CEACAM1 mainly with membrane pattern, and the intermediately and poorly differentiated serous adenocarcinomas expressed CEACAM1 mainly with cytoplasmic pattern (P < .05). In addition, CEACAM1 expression is elevated in solid tumors of ovary but variable as a function of histotype. Compared with membranous expression, the cytoplasmic expression was observed almost in metastatic carcinoma that might decrease the adhesive interactions of the carcinoma cells with the surrounding cells, especially with tumor cells, and this could facilitate the tumor cells to metastasize to distant regions. So, we thought that cytoplasmic CEACAM1 might play an important role in tumor progression, especially in tumor metastasis.
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Affiliation(s)
- Ning Li
- Department of Anatomy, College of Basic Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355 Shandong, PR China.
| | - Jing-Yan Yang
- Department of Pathology, The Second Hospital, Shandong University, Jinan, Shandong 250033, PR China.
| | - Xiao-Ying Wang
- Department of Pathology, The Second Hospital, Shandong University, Jinan, Shandong 250033, PR China.
| | - Hai-Tao Wang
- Department of Pathology, The Second Hospital, Shandong University, Jinan, Shandong 250033, PR China.
| | - Bing-Xin Guan
- Department of Pathology, The Second Hospital, Shandong University, Jinan, Shandong 250033, PR China.
| | - Cheng-Jun Zhou
- Department of Pathology, The Second Hospital, Shandong University, Jinan, Shandong 250033, PR China.
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Protein tyrosine phosphatase SAP-1 protects against colitis through regulation of CEACAM20 in the intestinal epithelium. Proc Natl Acad Sci U S A 2015. [PMID: 26195794 DOI: 10.1073/pnas.1510167112] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Intestinal epithelial cells contribute to regulation of intestinal immunity in mammals, but the detailed molecular mechanisms of such regulation have remained largely unknown. Stomach-cancer-associated protein tyrosine phosphatase 1 (SAP-1, also known as PTPRH) is a receptor-type protein tyrosine phosphatase that is localized specifically at microvilli of the brush border in gastrointestinal epithelial cells. Here we show that SAP-1 ablation in interleukin (IL)-10-deficient mice, a model of inflammatory bowel disease, resulted in a marked increase in the severity of colitis in association with up-regulation of mRNAs for various cytokines and chemokines in the colon. Tyrosine phosphorylation of carcinoembryonic antigen-related cell adhesion molecule (CEACAM) 20, an intestinal microvillus-specific transmembrane protein of the Ig superfamily, was greatly increased in the intestinal epithelium of the SAP-1-deficient animals, suggesting that this protein is a substrate for SAP-1. Tyrosine phosphorylation of CEACAM20 by the protein tyrosine kinase c-Src and the consequent association of CEACAM20 with spleen tyrosine kinase (Syk) promoted the production of IL-8 in cultured cells through the activation of nuclear factor-κB (NF-κB). In addition, SAP-1 and CEACAM20 were found to form a complex through interaction of their ectodomains. SAP-1 and CEACAM20 thus constitute a regulatory system through which the intestinal epithelium contributes to intestinal immunity.
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Kitamura Y, Murata Y, Park JH, Kotani T, Imada S, Saito Y, Okazawa H, Azuma T, Matozaki T. Regulation by gut commensal bacteria of carcinoembryonic antigen-related cell adhesion molecule expression in the intestinal epithelium. Genes Cells 2015; 20:578-89. [DOI: 10.1111/gtc.12247] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 03/27/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Yasuaki Kitamura
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
- Division of Gastroenterology; Department of Internal Medicine; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Yoji Murata
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Jung-ha Park
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Shinya Imada
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Hideki Okazawa
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Takeshi Azuma
- Division of Gastroenterology; Department of Internal Medicine; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
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Jensen-Jarolim E, Fazekas J, Singer J, Hofstetter G, Oida K, Matsuda H, Tanaka A. Crosstalk of carcinoembryonic antigen and transforming growth factor-β via their receptors: comparing human and canine cancer. Cancer Immunol Immunother 2015; 64:531-7. [PMID: 25832000 PMCID: PMC4412651 DOI: 10.1007/s00262-015-1684-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/19/2015] [Indexed: 01/27/2023]
Abstract
There is accumulating evidence that the transforming growth factor beta (TGF-β) and nuclear factor kappa-B (NFκB) pathways are tightly connected and play a key role in malignant transformation in cancer. Immune infiltration by regulatory T- and B-lymphocytes (Tregs, Bregs) has recently gained increased attention for being an important source of TGF-β. There is a plethora of studies examining the pro-tumorigenic functions of carcinoembryonic antigen (CEA), but its receptor CEAR is far less studied. So far, there is a single connecting report that TGF-β also may signal through CEAR. The crosstalk between cancer tissues is further complicated by the expression of CEAR and TGF-β receptors in stromal cells, and implications of TGF-β in epithelial–mesenchymal transition. Furthermore, tumor-infiltrating Tregs and Bregs may directly instruct cancer cells by secreting TGF-β binding to their CEAR. Therefore, both TGF-β and CEA may act synergistically in breast cancer and cause disease progression, and NFκB could be a common crossing point between their signaling. CEAR, TGF-β1–3, TGF-β-R types I–III and NFκB class I and II molecules have an outstanding human–canine sequence identity, and only a canine CEA homolog has not yet been identified. For these reasons, the dog may be a valid translational model patient for investigating the crosstalk of the interconnected CEA and TGF-β networks.
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Affiliation(s)
- Erika Jensen-Jarolim
- Department of Comparative Medicine, Comparative Immunology and Oncology, Messerli Research Institute of the University of Veterinary Medicine Vienna, c/o Institute of Pathophysiology and Allergy Research, AKH 4Q, Medical University Vienna and University Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria,
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Wang H, Wang X, He C, Li H, Qing J, Grati M, Hu Z, Li J, Hu Y, Xia K, Mei L, Wang X, Yu J, Chen H, Jiang L, Liu Y, Men M, Zhang H, Guan L, Xiao J, Zhang J, Liu X, Feng Y. Exome sequencing identifies a novel CEACAM16 mutation associated with autosomal dominant nonsyndromic hearing loss DFNA4B in a Chinese family. J Hum Genet 2015; 60:119-126. [PMID: 25589040 PMCID: PMC4375019 DOI: 10.1038/jhg.2014.114] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 11/21/2014] [Accepted: 11/25/2014] [Indexed: 12/28/2022]
Abstract
Autosomal dominant nonsyndromic hearing loss (ADNSHL/DFNA) is a highly genetically heterogeneous disorder. Hitherto only about 30 ADNSHL-causing genes have been identified and many unknown genes remain to be discovered. In this research, genome-wide linkage analysis mapped the disease locus to a 4.3 Mb region on chromosome 19q13 in SY-026, a five-generation nonconsanguineous Chinese family affected by late-onset and progressive ADNSHL. This linkage region showed partial overlap with the previously reported DFNA4. Simultaneously, probands were analyzed using exome capture followed by next generation sequencing. Encouragingly, a heterozygous missense mutation, c.505G>A (p.G169R) in exon 3 of the CEACAM16 gene (carcinoembryonic antigen-related cell adhesion molecule 16), was identified via this combined strategy. Sanger sequencing verified that the mutation co-segregated with hearing loss in the family and that it was not present in 200 unrelated control subjects with matched ancestry. This is the second report in the literature of a family with ADNSHL caused by CEACAM16 mutation. Immunofluorescence staining and Western blots also prove CEACAM16 to be a secreted protein. Furthermore, our studies in transfected HEK293T cells show that the secretion efficacy of the mutant CEACAM16 is much lower than that of the wild-type, suggesting a deleterious effect of the sequence variant.
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Affiliation(s)
- Honghan Wang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Department of Head and Neck Surgery, Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Xinwei Wang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Chufeng He
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Haibo Li
- State Key Laboratory of Medical Genetics of China, Changsha, Hunan, China
| | - Jie Qing
- Department of Otorhinolaryngology, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Mhamed Grati
- Department of Otorhinolaryngology, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Zhengmao Hu
- State Key Laboratory of Medical Genetics of China, Changsha, Hunan, China
| | - Jiada Li
- State Key Laboratory of Medical Genetics of China, Changsha, Hunan, China
| | - Yiqiao Hu
- State Key Laboratory of Medical Genetics of China, Changsha, Hunan, China
| | - Kun Xia
- State Key Laboratory of Medical Genetics of China, Changsha, Hunan, China
| | - Lingyun Mei
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Xingwei Wang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Jianjun Yu
- Department of Head and Neck Surgery, Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, Hunan, China
| | - Hongsheng Chen
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Lu Jiang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Yalan Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Meichao Men
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,Health Management Center, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hailin Zhang
- Department of Head and Neck Surgery, Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, Hunan, China
| | | | | | | | - Xuezhong Liu
- Department of Otorhinolaryngology, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Yong Feng
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.,State Key Laboratory of Medical Genetics of China, Changsha, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
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Heckt T, Bickert T, Jeschke A, Seitz S, Schulze J, Ito WD, Zimmermann W, Amling M, Schinke T, Horst AK, Keller J. Increased osteoclastogenesis in mice lacking the carcinoembryonic antigen-related cell adhesion molecule 1. PLoS One 2014; 9:e114360. [PMID: 25490771 PMCID: PMC4260834 DOI: 10.1371/journal.pone.0114360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 11/06/2014] [Indexed: 02/02/2023] Open
Abstract
Alterations in bone remodeling are a major public health issue, as therapeutic options for widespread bone disorders such as osteoporosis and tumor-induced osteolysis are still limited. Therefore, a detailed understanding of the regulatory mechanism governing bone cell differentiation in health and disease are of utmost clinical importance. Here we report a novel function of carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1), a member of the immunoglobulin superfamily involved in inflammation and tumorigenesis, in the physiologic regulation of bone remodeling. Assessing the expression of all members of the murine Ceacam family in bone tissue and marrow, we found CEACAM1 and CEACAM10 to be differentially expressed in both bone-forming osteoblasts and bone-resorbing osteoclasts. While Ceacam10-deficient mice displayed no alteration in structural bone parameters, static histomorphometry demonstrated a reduced trabecular bone mass in mice lacking CEACAM1. Furthermore, cellular and dynamic histomorphometry revealed an increased osteoclast formation in Ceacam1-deficient mice, while osteoblast parameters and the bone formation rate remained unchanged. In line with these findings, we detected accelerated osteoclastogenesis in Ceacam1-deficient bone marrow cells, while osteoblast differentiation, as determined by mineralization and alkaline phosphatase assays, was not affected. Therefore, our results provide in vivo and in vitro evidence for a physiologic role of CEACAM1 in the regulation of osteoclastogenesis.
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Affiliation(s)
- Timo Heckt
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Thomas Bickert
- Institute of Clinical Chemistry, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Sebastian Seitz
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Jochen Schulze
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Wulf D. Ito
- Cardiovascular Center Oberallgäu-Kempten, Im Stillen 3, Immenstadt 87509, Germany
| | - Wolfgang Zimmermann
- Tumor Immunology Laboratory, LIFE-Center, Klinikum Grosshadern, Ludwig-Maximilians-University Munich, Marchionistraße 15, Munich 81377, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Andrea Kristina Horst
- Institute of Clinical Chemistry, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Johannes Keller
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
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41
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Pavlopoulou A, Scorilas A. A comprehensive phylogenetic and structural analysis of the carcinoembryonic antigen (CEA) gene family. Genome Biol Evol 2014; 6:1314-26. [PMID: 24858421 PMCID: PMC4079198 DOI: 10.1093/gbe/evu103] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The carcinoembryonic antigen (CEA) gene family belongs to the immunoglobulin (Ig) superfamily and codes for a vast number of glycoproteins that differ greatly both in amino acid composition and function. The CEA family is divided into two groups, the carcinoembryonic antigen-related cell adhesion molecules (CEACAMs) and the pregnancy-specific glycoproteins. The CEA family members are implicated in pleiotropic (patho)physiological functions including cell-cell adhesion, pregnancy, immunity, neovascularization, regulation of insulin homeostasis, and carcinogenesis. In general, the CEA-encoded proteins are composed of an extracellular region with Ig variable and constant-like domains and a cytoplasmic region containing signaling motifs. Of particular interest, the well-studied human and mouse CEA genes are arranged in clusters in a single chromosome. Taking into account this characteristic, we made an effort to reconstruct the evolutionary history of the CEA gene family. Toward this end, the publicly available genomes were searched extensively for CEA homologs. The domain organization of the retrieved protein sequences was analyzed, and, subsequently, comprehensive phylogenetic analyses of the entire length CEA homologous proteins were performed. A series of evolutionarily conserved amino acid residues, functionally important, were identified. The relative positioning of these residues on the modeled tertiary structure of novel CEA protein domains revealed that they are, also, spatially conserved. Furthermore, the chromosomal arrangement of CEA genes was examined, and it was found that the CEA genes are preserved in terms of position, transcriptional orientation, and number in all species under investigation.
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Affiliation(s)
- Athanasia Pavlopoulou
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Athens, Panepistimiopolis, Athens, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Athens, Panepistimiopolis, Athens, Greece
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42
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Tchoupa AK, Schuhmacher T, Hauck CR. Signaling by epithelial members of the CEACAM family - mucosal docking sites for pathogenic bacteria. Cell Commun Signal 2014; 12:27. [PMID: 24735478 PMCID: PMC4057559 DOI: 10.1186/1478-811x-12-27] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 03/24/2014] [Indexed: 11/22/2022] Open
Abstract
Carcinoembryonic antigen-related cell adhesion molecules (CEACAMs) comprise a group of immunoglobulin-related vertebrate glycoproteins. Several family members, including CEACAM1, CEA, and CEACAM6, are found on epithelial tissues throughout the human body. As they modulate diverse cellular functions, their signaling capacity is in the focus of current research. In this review we will summarize the knowledge about common signaling processes initiated by epithelial CEACAMs and suggest a model of signal transduction by CEACAM family members lacking significant cytoplasmic domains. As pathogenic and non-pathogenic bacteria exploit these receptors during mucosal colonization, we try to highlight the connection between CEACAMs, microbes, and cellular responses. Special emphasis in this context is placed on the functional interplay between CEACAMs and integrins that influences matrix adhesion of epithelial cells. The cooperation between these two receptor families provides an intriguing example of the fine tuning of cellular responses and their manipulation by specialized microorganisms.
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Affiliation(s)
| | | | - Christof R Hauck
- Lehrstuhl für Zellbiologie, Universität Konstanz, 78457 Konstanz, Germany.
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Gene conversions are under purifying selection in the carcinoembryonic antigen immunoglobulin gene families of primates. Genomics 2013; 102:301-9. [DOI: 10.1016/j.ygeno.2013.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 06/25/2013] [Accepted: 07/08/2013] [Indexed: 11/20/2022]
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Klaile E, Klassert TE, Scheffrahn I, Müller MM, Heinrich A, Heyl KA, Dienemann H, Grünewald C, Bals R, Singer BB, Slevogt H. Carcinoembryonic antigen (CEA)-related cell adhesion molecules are co-expressed in the human lung and their expression can be modulated in bronchial epithelial cells by non-typable Haemophilus influenzae, Moraxella catarrhalis, TLR3, and type I and II interferons. Respir Res 2013; 14:85. [PMID: 23941132 PMCID: PMC3765474 DOI: 10.1186/1465-9921-14-85] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 08/10/2013] [Indexed: 11/18/2022] Open
Abstract
Background The carcinoembryonic antigen (CEA)-related cell adhesion molecules CEACAM1 (BGP, CD66a), CEACAM5 (CEA, CD66e) and CEACAM6 (NCA, CD66c) are expressed in human lung. They play a role in innate and adaptive immunity and are targets for various bacterial and viral adhesins. Two pathogens that colonize the normally sterile lower respiratory tract in patients with chronic obstructive pulmonary disease (COPD) are non-typable Haemophilus influenzae (NTHI) and Moraxella catarrhalis. Both pathogens bind to CEACAMs and elicit a variety of cellular reactions, including bacterial internalization, cell adhesion and apoptosis. Methods To analyze the (co-) expression of CEACAM1, CEACAM5 and CEACAM6 in different lung tissues with respect to COPD, smoking status and granulocyte infiltration, immunohistochemically stained paraffin sections of 19 donors were studied. To address short-term effects of cigarette smoke and acute inflammation, transcriptional regulation of CEACAM5, CEACAM6 and different CEACAM1 isoforms by cigarette smoke extract, interferons, Toll-like receptor agonists, and bacteria was tested in normal human bronchial epithelial (NHBE) cells by quantitative PCR. Corresponding CEACAM protein levels were determined by flow cytometry. Results Immunohistochemical analysis of lung sections showed the most frequent and intense staining for CEACAM1, CEACAM5 and CEACAM6 in bronchial and alveolar epithelium, but revealed no significant differences in connection with COPD, smoking status and granulocyte infiltration. In NHBE cells, mRNA expression of CEACAM1 isoforms CEACAM1-4L, CEACAM1-4S, CEACAM1-3L and CEACAM1-3S were up-regulated by interferons alpha, beta and gamma, as well as the TLR3 agonist polyinosinic:polycytidylic acid (poly I:C). Interferon-gamma also increased CEACAM5 expression. These results were confirmed on protein level by FACS analysis. Importantly, also NTHI and M. catarrhalis increased CEACAM1 mRNA levels. This effect was independent of the ability to bind to CEACAM1. The expression of CEACAM6 was not affected by any treatment or bacterial infection. Conclusions While we did not find a direct correlation between CEACAM1 expression and COPD, the COPD-associated bacteria NTHi and M. catarrhalis were able to increase the expression of their own receptor on host cells. Further, the data suggest a role for CEACAM1 and CEACAM5 in the phenomenon of increased host susceptibility to bacterial infection upon viral challenge in the human respiratory tract.
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Affiliation(s)
- Esther Klaile
- Septomics, Research Centre of the Friedrich-Schiller-University Jena, the Jena University Hospital and the Leibniz-Institute for Natural Products Research and Infection Biology - Hans Knöll Institute, Albert-Einstein-Strasse 10, 07745 Jena, Germany
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A novel full-length isoform of murine pregnancy-specific glycoprotein 16 (psg16) is expressed in the brain but does not mediate murine coronavirus (MHV) entry. J Neurovirol 2013; 18:138-43. [PMID: 22302612 PMCID: PMC3368079 DOI: 10.1007/s13365-012-0081-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 01/12/2012] [Indexed: 11/09/2022]
Abstract
The mouse pregnancy-specific glycoprotein 16 (PSG16) has been reported to be an alternative receptor for mouse hepatitis virus (MHV), some strains of which cause encephalitis in mice lacking the canonical receptor CEACAM1a. The known isoforms of PSG16 are N-terminally truncated relative to other PSG family proteins and are expressed in neurons as well as in the placenta. We have cloned a novel full-length isoform of psg16 that is also expressed in the brain, placenta, and retina but, like the truncated form, lacks MHV receptor activity when expressed on 293T cells, suggesting that PSG16 does not mediate CEACAM1a-independent spread of MHV.
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Huynh-Torlakovic H, Bjerkan L, Schenck K, Blix IJS. Distribution of carcinoembryonic antigen-related cellular adhesion molecules in human gingiva. Eur J Oral Sci 2013; 120:395-401. [PMID: 22984996 DOI: 10.1111/j.1600-0722.2012.00981.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Carcinoembryonic antigen-related cellular adhesion molecules (CEACAMs) are glycoproteins produced in epithelial, endothelial, lymphoid, and myeloid cells. Carcinoembryonic antigen-related cellular adhesion molecules mediate cell-cell contact and host-pathogen interactions. The aims of this study were to map the distribution and examine the regulation of CEACAMs in human gingival sites. Quantitative real-time PCR performed on human gingival biopsies from periodontitis sites revealed mRNA coding for CEACAM1, -5, -6, and -7. Immunohistochemistry showed that CEACAMs were not found in oral gingival epithelium, except for CEACAM5 in periodontitis. Carcinoembryonic antigen-related cellular adhesion molecules 1, 5, and 6 were present in the oral sulcular epithelium of periodontitis but not in that of healthy gingiva. In junctional epithelium, all three molecules were present in healthy gingiva, but in periodontitis only CEACAM1 and -6 were detected. Staining for CEACAM1 and -6 was also seen in the inflammatory cell infiltrate in periodontitis. No staining for CEACAM7 was found. Proinflammatory mediators, including lipopolysaccharide (LPS), tumour necrosis factor-α (TNF-α)/interleukin-1β (IL-1β), and interferon-γ (IFN-γ), increased the expression of CEACAM1 and CEACAM6 mRNAs in cultured human oral keratinocytes. CEACAM1 and CEACAM6 mRNAs were also strongly up-regulated upon stimulation with lysophosphatidic acid. In conclusion, the distribution of different CEACAMs was related to specific sites in the gingiva. This might reflect different functional roles in this tissue.
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Zhang G, Cowled C, Shi Z, Huang Z, Bishop-Lilly KA, Fang X, Wynne JW, Xiong Z, Baker ML, Zhao W, Tachedjian M, Zhu Y, Zhou P, Jiang X, Ng J, Yang L, Wu L, Xiao J, Feng Y, Chen Y, Sun X, Zhang Y, Marsh GA, Crameri G, Broder CC, Frey KG, Wang LF, Wang J. Comparative analysis of bat genomes provides insight into the evolution of flight and immunity. Science 2013; 339:456-60. [PMID: 23258410 PMCID: PMC8782153 DOI: 10.1126/science.1230835] [Citation(s) in RCA: 417] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Bats are the only mammals capable of sustained flight and are notorious reservoir hosts for some of the world's most highly pathogenic viruses, including Nipah, Hendra, Ebola, and severe acute respiratory syndrome (SARS). To identify genetic changes associated with the development of bat-specific traits, we performed whole-genome sequencing and comparative analyses of two distantly related species, fruit bat Pteropus alecto and insectivorous bat Myotis davidii. We discovered an unexpected concentration of positively selected genes in the DNA damage checkpoint and nuclear factor κB pathways that may be related to the origin of flight, as well as expansion and contraction of important gene families. Comparison of bat genomes with other mammalian species has provided new insights into bat biology and evolution.
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Affiliation(s)
- Guojie Zhang
- BGI-Shenzhen, Shenzhen, 518083, China
- Centre for Social Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark
| | - Christopher Cowled
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | - Zhengli Shi
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | | | | | | | - James W. Wynne
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | | | - Michelle L. Baker
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | - Wei Zhao
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Mary Tachedjian
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | | | - Peng Zhou
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | | | - Justin Ng
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | - Lan Yang
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Lijun Wu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Jin Xiao
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Yue Feng
- BGI-Shenzhen, Shenzhen, 518083, China
| | | | | | | | - Glenn A. Marsh
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | - Gary Crameri
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
| | - Christopher C. Broder
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, MD 20814, USA
| | - Kenneth G. Frey
- Naval Medical Research Center and Henry M. Jackson Foundation, Fort Detrick, MD 21702, USA
| | - Lin-Fa Wang
- CSIRO Australian Animal Health Laboratory, Geelong, Victoria 3220, Australia
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore 169857
| | - Jun Wang
- BGI-Shenzhen, Shenzhen, 518083, China
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, DK-2200, Copenhagen, Denmark
- Department of Biology, University of Copenhagen, DK-2200, Copenhagen, Denmark
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Zhang H, Eisenried A, Zimmermann W, Shively JE. Role of CEACAM1 and CEACAM20 in an in vitro model of prostate morphogenesis. PLoS One 2013; 8:e53359. [PMID: 23358633 PMCID: PMC3554727 DOI: 10.1371/journal.pone.0053359] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 11/29/2012] [Indexed: 11/19/2022] Open
Abstract
CEACAM20, a novel member of the CEACAM1 gene family with expression limited to the lumen of small intestine, testes, and prostate, is co-expressed with CEACAM1 in adult prostate tissue and down-regulated to the same extent as CEACAM1 in prostate cancer. Since prostate cancer often involves loss of epithelial lumen formation, we hypothesized that CEACAM20 and CEACAM1 play important roles in lumen formation of normal prostate epithelium. When prostate cells were grown on Matrigel as a source of extracellular matrix (ECM), they differentiated into acinar structures with single tubules and well-defined lumina closely resembling embryonic prostate organoids. Confocal microscopic analysis revealed restriction of CEACAM20 to acini and CEACAM1 to tubule structures, respectively. Inhibition of CEACAM1 with antibodies or soluble CEACAM1 or antisense oligonucleotides inhibited tubule formation by over 50% while the remaining tubules were stunted. Inhibition of CEACAM20 with antisense oligonucleotides completely inhibited tubule formation and stunted the growth of acini. We conclude that CEACAM20 and CEACAM1 not only mark the lumina of adult prostate tissue but also play a critical role in the vitro generation of prostate organoids.
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Affiliation(s)
- Hui Zhang
- City of Hope Irell & Manella Graduate School of Biological Sciences, Duarte, California, United States of America
- Department of Immunology, Beckman Research Institute of City of Hope, Duarte, California, United States of America
| | - Andreas Eisenried
- Anästhesiologische Klinik, Universitätsklinikum Erlangen, Erlangen, Germany
| | | | - John E. Shively
- Department of Immunology, Beckman Research Institute of City of Hope, Duarte, California, United States of America
- * E-mail:
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Salaheldeen E, Kurio H, Howida A, Iida H. Molecular cloning and localization of a CEACAM2 isoform, CEACAM2-L, expressed in spermatids in mouse testis. Mol Reprod Dev 2012; 79:843-52. [PMID: 23070997 DOI: 10.1002/mrd.22123] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Accepted: 10/06/2012] [Indexed: 11/09/2022]
Abstract
Carcinoembryonic antigen (CEA) family, a subgroup of the immunoglobulin (Ig) superfamily, is divided into two sub-families: the CEA-related cell adhesion molecules (CEACAM) and the pregnancy-specific glycoproteins. The isoform CEACAM2 is expressed in mouse testis; in this study, we identified a novel isoform of Ceacam2, Ceacam2-Long (Ceacam2-L). CEACAM2-L is different from CEACAM2 in that it has much longer cytoplasmic tail region. Ceacam2-L starts to appear faintly in mouse testis after 3 weeks of postnatal development, and its expression level increased after 5 weeks. Immunoblot analysis confirmed the expression of CEACAM2-L in the seminiferous epithelium of mouse testis. Immunohistochemical data showed that CEACAM2-L was not observed on spermatogonia, spermatocytes, round spermatids, or Sertoli cells, but was seen at the plasma membrane of elongating spermatids in contact with extended cytoplasmic processes of Sertoli cells. CEACAM2-L was not detected at the head region of elongating spermatids, where the apical ectoplasmic specialization is constructed. These data suggest that CEACAM2-L might be a novel adhesion molecule contributing to cell-to-cell adhesion between elongating spermatids and Sertoli cells within the seminiferous epithelium.
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Affiliation(s)
- Elsaid Salaheldeen
- Laboratory of Zoology, Graduate School of Agriculture, Kyushu University, Higashiku Hakozaki, Fukuoka, Japan
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Carter AM. Evolution of Placental Function in Mammals: The Molecular Basis of Gas and Nutrient Transfer, Hormone Secretion, and Immune Responses. Physiol Rev 2012; 92:1543-76. [DOI: 10.1152/physrev.00040.2011] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Placenta has a wide range of functions. Some are supported by novel genes that have evolved following gene duplication events while others require acquisition of gene expression by the trophoblast. Although not expressed in the placenta, high-affinity fetal hemoglobins play a key role in placental gas exchange. They evolved following duplications within the beta-globin gene family with convergent evolution occurring in ruminants and primates. In primates there was also an interesting rearrangement of a cassette of genes in relation to an upstream locus control region. Substrate transfer from mother to fetus is maintained by expression of classic sugar and amino acid transporters at the trophoblast microvillous and basal membranes. In contrast, placental peptide hormones have arisen largely by gene duplication, yielding for example chorionic gonadotropins from the luteinizing hormone gene and placental lactogens from the growth hormone and prolactin genes. There has been a remarkable degree of convergent evolution with placental lactogens emerging separately in the ruminant, rodent, and primate lineages and chorionic gonadotropins evolving separately in equids and higher primates. Finally, coevolution in the primate lineage of killer immunoglobulin-like receptors and human leukocyte antigens can be linked to the deep invasion of the uterus by trophoblast that is a characteristic feature of human placentation.
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Affiliation(s)
- Anthony M. Carter
- Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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