1
|
Cohen GS, Kallarakal MA, Jayaraman S, Ibukun FI, Tong KP, Orzolek LD, Larman HB, Krummey SM. Transplantation elicits a clonally diverse CD8 + T cell response that is comprised of potent CD43 + effectors. Cell Rep 2023; 42:112993. [PMID: 37590141 PMCID: PMC10727118 DOI: 10.1016/j.celrep.2023.112993] [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: 08/31/2022] [Revised: 06/09/2023] [Accepted: 08/02/2023] [Indexed: 08/19/2023] Open
Abstract
CD8+ T cells mediate acute rejection of allografts, which threatens the long-term survival of transplanted organs. Using MHC class I tetramers, we find that allogeneic CD8+ T cells are present at an elevated naive precursor frequency relative to other epitopes, only modestly increase in number after grafting, and maintain high T cell receptor diversity throughout the immune response. While antigen-specific effector CD8+ T cells poorly express the canonical effector marker KLRG-1, expression of the activated glycoform of CD43 defines potent effectors after transplantation. Activated CD43+ effector T cells maintain high expression of the coreceptor induced T cell costimulator (ICOS) in the presence of CTLA-4 immunoglobulin (Ig), and dual CTLA-4 Ig/anti-ICOS treatment prolongs graft survival. These data demonstrate that graft-specific CD8+ T cells have a distinct response profile relative to anti-pathogen CD8+ T cells and that CD43 and ICOS are critical surface receptors that define potent effector CD8+ T cell populations that form after transplantation.
Collapse
Affiliation(s)
- Gregory S Cohen
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Melissa A Kallarakal
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Sahana Jayaraman
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Francis I Ibukun
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Katherine P Tong
- Emory Transplant Center, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Linda D Orzolek
- Department of Molecular Biology and Genetics, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - H Benjamin Larman
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Scott M Krummey
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.
| |
Collapse
|
2
|
Buenaventura RGM, Merlino G, Yu Y. Ez-Metastasizing: The Crucial Roles of Ezrin in Metastasis. Cells 2023; 12:1620. [PMID: 37371090 DOI: 10.3390/cells12121620] [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: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Ezrin is the cytoskeletal organizer and functions in the modulation of membrane-cytoskeleton interaction, maintenance of cell shape and structure, and regulation of cell-cell adhesion and movement, as well as cell survival. Ezrin plays a critical role in regulating tumor metastasis through interaction with other binding proteins. Notably, Ezrin has been reported to interact with immune cells, allowing tumor cells to escape immune attack in metastasis. Here, we review the main functions of Ezrin, the mechanisms through which it acts, its role in tumor metastasis, and its potential as a therapeutic target.
Collapse
Affiliation(s)
- Rand Gabriel M Buenaventura
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Glenn Merlino
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yanlin Yu
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| |
Collapse
|
3
|
Li YY, Wang XY, Li Y, Wang XM, Liao J, Wang YZ, Hong H, Yi W, Chen J. Targeting CD43 optimizes cancer immunotherapy through reinvigorating antitumor immune response in colorectal cancer. Cell Oncol (Dordr) 2023; 46:777-791. [PMID: 36920728 DOI: 10.1007/s13402-023-00794-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2023] [Indexed: 03/16/2023] Open
Abstract
PURPOSE Colorectal cancer (CRC) is one of the most common malignancies worldwide, with dramatically increasing incidence and mortality for decades. However, current therapeutic strategies for CRC, including chemotherapies and immunotherapies, have only demonstrated limited efficacy. Here, we report a novel immune molecule, CD43, that can regulate the tumor immune microenvironment (TIME) and serves as a promising target for CRC immunotherapy. METHODS The correlation of CD43 expression with CRC patient prognosis was revealed by public data analysis. CD43 knockout (KO) CRC cell lines were generated by CRISPR-Cas9 technology, and a syngenetic murine CRC model was established to investigate the in vivo function of CD43. The TIME was analyzed via immunohistochemical staining, flow cytometry and RNA-seq. Immune functions were investigated by depletion of immune subsets in vivo and T-cell functional assays in vitro, including T-cell priming, cytotoxicity, and chemotaxis experiments. RESULTS In this study, we found that high expression of CD43 was correlated with poor survival of CRC patients and the limited infiltration of CD8+ T cells in human CRC tissues. Importantly, CD43 expressed on tumor cells, rather than host cells, promoted tumor progression in a syngeneic tumor model. Loss of CD43 facilitated the infiltration of immune cells and immunological memory in the TIME of CRC tumors. Mechanistically, the protumor effect of CD43 depends on T cells, thereby attenuating T-cell-mediated cytotoxicity and cDC1-mediated antigen-specific T-cell activation. Moreover, targeting CD43 synergistically improved PD-L1 blockade immunotherapy for CRC. CONCLUSION Our findings revealed that targeting tumor-intrinsic CD43 could activate the antitumor immune response and provide particular value for optimized cancer immunotherapy by regulating the TIME in CRC patients.
Collapse
Affiliation(s)
- Yi-Yi Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Zhongshan School of Medicine, Sun Yat- sen University, Guangzhou, China.,Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xin-Yu Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Zhongshan School of Medicine, Sun Yat- sen University, Guangzhou, China.,Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yan Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Zhongshan School of Medicine, Sun Yat- sen University, Guangzhou, China.,Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xiu-Mei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Zhongshan School of Medicine, Sun Yat- sen University, Guangzhou, China.,Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Jing Liao
- GMU-GIBH Joint School of Life Sciences, The Guangdong-Hong Kong-Macau Joint Laboratory for Cell Fate Regulation and Diseases, Guangzhou Medical University, Guangzhou, China
| | - Ying-Zhao Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Hai Hong
- Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Tropical Disease Control of the Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Wei Yi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Zhongshan School of Medicine, Sun Yat- sen University, Guangzhou, China.
| | - Jun Chen
- Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory of Tropical Disease Control of the Ministry of Education, Sun Yat-sen University, Guangzhou, China. .,Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Center for Precision Medicine, Sun Yat-sen University, Guangzhou, China.
| |
Collapse
|
4
|
Zhao S, Luo J, Hu J, Wang H, Zhao N, Cao M, Zhang C, Hu R, Liu L. Role of Ezrin in Asthma-Related Airway Inflammation and Remodeling. Mediators Inflamm 2022; 2022:6255012. [PMID: 36530558 PMCID: PMC9750775 DOI: 10.1155/2022/6255012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 08/13/2023] Open
Abstract
Ezrin is an actin binding protein connecting the cell membrane and the cytoskeleton, which is crucial to maintaining cell morphology, intercellular adhesion, and cytoskeleton remodeling. Asthma involves dysfunction of inflammatory cells, cytokines, and airway structural cells. Recent studies have shown that ezrin, whose function is affected by extensive phosphorylation and protein interactions, is closely associated with asthma, may be a therapeutic target for asthma treatment. In this review, we summarize studies on ezrin and discuss its role in asthma-related airway inflammation and remodeling.
Collapse
Affiliation(s)
- Shumei Zhao
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Jiaqi Luo
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Jun Hu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Hesheng Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Ningwei Zhao
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Shimadzu Biomedical Research Laboratory, Shanghai 200233, China
| | - Meng Cao
- Nanjing University of Chinese Medicine, Nanjing 210029, China
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine Nanjing University of Chinese Medicine, Nanjing 210028, China
| | - Cong Zhang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Rongkui Hu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Lanying Liu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
- Nanjing University of Chinese Medicine, Nanjing 210029, China
| |
Collapse
|
5
|
Elshikha AS, Teng XY, Kanda N, Li W, Choi SC, Abboud G, Terrell M, Fredenburg K, Morel L. TLR7 Activation Accelerates Cardiovascular Pathology in a Mouse Model of Lupus. Front Immunol 2022; 13:914468. [PMID: 35860280 PMCID: PMC9289616 DOI: 10.3389/fimmu.2022.914468] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/08/2022] [Indexed: 02/06/2023] Open
Abstract
We report a novel model of lupus-associated cardiovascular pathology accelerated by the TLR7 agonist R848 in lupus-prone B6.Sle1.Sle2.Sle3 (TC) mice. R848-treated TC mice but not non-autoimmune C57BL/6 (B6) controls developed microvascular inflammation and myocytolysis with intracellular vacuolization. This histopathology was similar to antibody-mediated rejection after heart transplant, although it did not involve complement. The TC or B6 recipients of serum or splenocytes from R848-treated TC mice developed a reactive cardiomyocyte hypertrophy, which also presents spontaneously in old TC mice as well as in TC.Rag-/- mice that lack B and T cells. Each of these cardiovascular lesions correspond to abnormalities that have been reported in lupus patients. Lymphoid and non-lymphoid immune cells as well as soluble factors contribute to lupus-associated cardiovascular lesions in TC mice, which can now be dissected using this model with and without R848 treatment.
Collapse
Affiliation(s)
- Ahmed S. Elshikha
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
- Department of Pharmaceutics, Zagazig University, Zagazig, Egypt
| | - Xiang Yu Teng
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Nathalie Kanda
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Wei Li
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Seung-Chul Choi
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Georges Abboud
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Morgan Terrell
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Kristianna Fredenburg
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Laurence Morel
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| |
Collapse
|
6
|
ERM Proteins at the Crossroad of Leukocyte Polarization, Migration and Intercellular Adhesion. Int J Mol Sci 2020; 21:ijms21041502. [PMID: 32098334 PMCID: PMC7073024 DOI: 10.3390/ijms21041502] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 12/12/2022] Open
Abstract
Ezrin, radixin and moesin proteins (ERMs) are plasma membrane (PM) organizers that link the actin cytoskeleton to the cytoplasmic tail of transmembrane proteins, many of which are adhesion receptors, in order to regulate the formation of F-actin-based structures (e.g., microspikes and microvilli). ERMs also effect transmission of signals from the PM into the cell, an action mainly exerted through the compartmentalized activation of the small Rho GTPases Rho, Rac and Cdc42. Ezrin and moesin are the ERMs more highly expressed in leukocytes, and although they do not always share functions, both are mainly regulated through phosphatidylinositol 4,5-bisphosphate (PIP2) binding to the N-terminal band 4.1 protein-ERM (FERM) domain and phosphorylation of a conserved Thr in the C-terminal ERM association domain (C-ERMAD), exerting their functions through a wide assortment of mechanisms. In this review we will discuss some of these mechanisms, focusing on how they regulate polarization and migration in leukocytes, and formation of actin-based cellular structures like the phagocytic cup-endosome and the immune synapse in macrophages/neutrophils and lymphocytes, respectively, which represent essential aspects of the effector immune response.
Collapse
|
7
|
CD43 sialoglycoprotein modulates cardiac inflammation and murine susceptibility to Trypanosoma cruzi infection. Sci Rep 2019; 9:8628. [PMID: 31197200 PMCID: PMC6565700 DOI: 10.1038/s41598-019-45138-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/29/2019] [Indexed: 12/11/2022] Open
Abstract
CD43 (leukosialin) is a large sialoglycoprotein abundantly expressed on the surface of most cells from the hematopoietic lineage. CD43 is directly involved in the contact between cells participating in a series of events such as signaling, adherence and host parasite interactions. In this study we examined the role of CD43 in the immune response against Trypanosoma cruzi, the protozoan parasite that causes Chagas’ disease, a potential life-threatening illness endemic in 21 Latin American countries according to the WHO. The acute stage of infection is marked by intense parasitemia and cardiac tissue parasitism, resulting in the recruitment of inflammatory cells and acute damage to the heart tissue. We show here that CD43−/− mice were more resistant to infection due to increased cytotoxicity of antigen specific CD8+ T cells and reduced inflammatory infiltration in the cardiac tissue, both contributing to lower cardiomyocyte damage. In addition, we demonstrate that the induction of acute myocarditis involves the engagement of CD43 cytoplasmic tripeptide sequence KRR to ezrin-radixin-moiesin cytoskeletal proteins. Together, our results show the participation of CD43 in different events involved in the pathogenesis of T. cruzi infection, contributing to a better overall understanding of the mechanisms underlying the pathogenesis of acute chagasic cardiomyopathy.
Collapse
|
8
|
Yin LM, Duan TT, Ulloa L, Yang YQ. Ezrin Orchestrates Signal Transduction in Airway Cells. Rev Physiol Biochem Pharmacol 2019; 174:1-23. [PMID: 28702704 DOI: 10.1007/112_2017_4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ezrin is a critical structural protein that organizes receptor complexes and orchestrates their signal transduction. In this study, we review the ezrin-meditated regulation of critical receptor complexes, including the epidermal growth factor receptor (EGFR), CD44, vascular cell adhesion molecule (VCAM), and the deleted in colorectal cancer (DCC) receptor. We also analyze the ezrin-meditated regulation of critical pathways associated with asthma, such as the RhoA, Rho-associated protein kinase (ROCK), and protein kinase A (cAMP/PKA) pathways. Mounting evidence suggests that ezrin plays a role in controlling airway cell function and potentially contributes to respiratory diseases. Ezrin can participate in asthma pathogenesis by affecting bronchial epithelium repair, T lymphocyte regulation, and the contraction of the airway smooth muscle cells. These studies provide new insights for the design of novel therapeutic strategies for asthma treatment.
Collapse
Affiliation(s)
- Lei-Miao Yin
- Laboratory of Molecular Biology, Shanghai Research Institute of Acupuncture and Meridian, Yue Yang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Ting-Ting Duan
- Laboratory of Molecular Biology, Shanghai Research Institute of Acupuncture and Meridian, Yue Yang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Luis Ulloa
- Laboratory of Molecular Biology, Shanghai Research Institute of Acupuncture and Meridian, Yue Yang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China. .,Department of Surgery, Center of Immunology and Inflammation, Rutgers-New Jersey Medical School, Rutgers University, Newark, NJ, 07101, USA.
| | - Yong-Qing Yang
- Laboratory of Molecular Biology, Shanghai Research Institute of Acupuncture and Meridian, Yue Yang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China.
| |
Collapse
|
9
|
Supper V, Hartl I, Boulègue C, Ohradanova-Repic A, Stockinger H. Dynamic Interaction- and Phospho-Proteomics Reveal Lck as a Major Signaling Hub of CD147 in T Cells. THE JOURNAL OF IMMUNOLOGY 2017; 198:2468-2478. [DOI: 10.4049/jimmunol.1600355] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 01/06/2017] [Indexed: 12/28/2022]
|
10
|
Bravo-Adame ME, Vera-Estrella R, Barkla BJ, Martínez-Campos C, Flores-Alcantar A, Ocelotl-Oviedo JP, Pedraza-Alva G, Rosenstein Y. An alternative mode of CD43 signal transduction activates pro-survival pathways of T lymphocytes. Immunology 2016; 150:87-99. [PMID: 27606486 DOI: 10.1111/imm.12670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 08/20/2016] [Accepted: 08/31/2016] [Indexed: 02/06/2023] Open
Abstract
CD43 is one of the most abundant co-stimulatory molecules on a T-cell surface; it transduces activation signals through its cytoplasmic domain, contributing to modulation of the outcome of T-cell responses. The aim of this study was to uncover new signalling pathways regulated by this sialomucin. Analysis of changes in protein abundance allowed us to identify pyruvate kinase isozyme M2 (PKM2), an enzyme of the glycolytic pathway, as an element potentially participating in the signalling cascade resulting from the engagement of CD43 and the T-cell receptor (TCR). We found that the glycolytic activity of this enzyme was not significantly increased in response to TCR+CD43 co-stimulation, but that PKM2 was tyrosine phosphorylated, suggesting that it was performing moonlight functions. We report that phosphorylation of both Y105 of PKM2 and of Y705 of signal transducer and activator of transcription 3 was induced in response to TCR+CD43 co-stimulation, resulting in activation of the mitogen-activated protein kinase kinase 5/extracellular signal-regulated kinase 5 (MEK5/ERK5) pathway. ERK5 and the cAMP response element binding protein (CREB) were activated, and c-Myc and nuclear factor-κB (p65) nuclear localization, as well as Bad phosphorylation, were augmented. Consistent with this, expression of human CD43 in a murine T-cell hybridoma favoured cell survival. Altogether, our data highlight novel signalling pathways for the CD43 molecule in T lymphocytes, and underscore a role for CD43 in promoting cell survival through non-glycolytic functions of metabolic enzymes.
Collapse
Affiliation(s)
- Maria Elena Bravo-Adame
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.,Posgrado en Ciencias Bioquímicas, UNAM, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Rosario Vera-Estrella
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Bronwyn J Barkla
- Southern Cross Plant Science, Southern Cross University, Lismore, NSW, Australia
| | - Cecilia Martínez-Campos
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.,Posgrado en Ciencias Bioquímicas, UNAM, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Angel Flores-Alcantar
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Jose Pablo Ocelotl-Oviedo
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Gustavo Pedraza-Alva
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Yvonne Rosenstein
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| |
Collapse
|
11
|
Chien EJ, Hsu CH, Chang VHJ, Lin EPY, Kuo TPT, Chien CH, Lin HY. In human T cells mifepristone antagonizes glucocorticoid non-genomic rapid responses in terms of Na(+)/H(+)-exchange 1 activity, but not ezrin/radixin/moesin phosphorylation. Steroids 2016; 111:29-36. [PMID: 26773750 DOI: 10.1016/j.steroids.2016.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 01/04/2016] [Indexed: 01/01/2023]
Abstract
Glucocorticoids (GCs) and progesterone have been employed as immunosuppressive agents during pregnancy for many years. Intracellular acidification by GCs is due to a rapid non-genomic inhibition of membrane Na(+)/H(+)-exchange 1 (NHE1) activity and is followed by immunosuppression of PHA-stimulated proliferation. NHE1 is tethered to the cortical actin cytoskeleton through ezrin/radixin/moesin (ERM) proteins within lipid rafts; these regulate cell shape, migration and resistance to apoptosis. We explored whether mifepristone (RU486), an antagonist of GCs in T cells, is able to completely block rapid non-genomic responses, namely NHE1 activity and the phosphorylation C-terminal residues of ERM proteins at threonine (cp-ERM). GCs stimulate a rapid non-genomic cp-ERM response in cells within 5min. RU486 antagonized the GC-induced rapid decrease in NHE1 activity, and arrested PHA-stimulated T cells at G0/G1 phase but had no effect on the rapid increase in cp-ERM, which persisted for 24h. However, the cp-ERM response was blocked by staurosporine in both resting and GC stimulated cells. The results of RU486 antagonized the GC induced rapid decrease in NHE1 ion transport activity, but not the increase cp-ERM. This suggests that RU486 in T cells exerts its antagonistic effects at NHE1 containing plasma membrane sites and not where cp-ERM links lipid rafts to cortical cytoskeletons.
Collapse
Affiliation(s)
- Eileen Jea Chien
- Institute and Department of Physiology, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC; Department of Healthcare Administration, Asia University, Taichung 41354, Taiwan, ROC; Graduate Institute of Basic Medical Science, College of Medicine, China Medical University, Taichung 40402, Taiwan, ROC.
| | - Ching-Hui Hsu
- Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei 11217, Taiwan, ROC
| | - Vincent Han-Jhih Chang
- Institute and Department of Physiology, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC
| | - Enoch Pin-Yi Lin
- Institute and Department of Physiology, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC
| | - Trista Pin-Tsun Kuo
- Institute and Department of Physiology, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC
| | - Chau-Heng Chien
- Institute and Department of Physiology, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC
| | - Hsiao-Yi Lin
- Department of Medicine, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei 11217, Taiwan, ROC.
| |
Collapse
|
12
|
Daum M, Broszeit F, Hoffmann-Röder A. Synthesis of a Fluorinated Sialophorin Hexasaccharide-Threonine Conjugate for Fmoc Solid-Phase Glycopeptide Synthesis. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600523] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Markus Daum
- Center for Integrated Protein Science Munich (CIPS ) at the Department of Chemistry; Ludwig-Maximilians-Universität; Butenandtstr. 5-13 81377 Munich Germany
| | - Frederik Broszeit
- Center for Integrated Protein Science Munich (CIPS ) at the Department of Chemistry; Ludwig-Maximilians-Universität; Butenandtstr. 5-13 81377 Munich Germany
| | - Anja Hoffmann-Röder
- Center for Integrated Protein Science Munich (CIPS ) at the Department of Chemistry; Ludwig-Maximilians-Universität; Butenandtstr. 5-13 81377 Munich Germany
| |
Collapse
|
13
|
Wilson CS, Elizer SK, Marshall AF, Stocks BT, Moore DJ. Regulation of B lymphocyte responses to Toll-like receptor ligand binding during diabetes prevention in non-obese diabetic (NOD) mice. J Diabetes 2016; 8:120-31. [PMID: 25564999 PMCID: PMC4598313 DOI: 10.1111/1753-0407.12263] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/12/2014] [Accepted: 12/23/2014] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Interactions between genetic risk factors and the environment drive type 1 diabetes (T1D). The system of Toll-like receptors (TLR) detects these environmental triggers; however, the target cell that intermediates these interactions to drive T1D remains unknown. METHODS We investigated the effect of TLR pathway activation (myeloid differentiation primary response 88 [MyD88] vs TIR-domain-containing adapter-inducing interferon-β [TRIF]) on B cell subsets via flow cytometry, including their activation, survival, proliferation, and cytoskeletal mobilization. The effect of polyinosinic-polycytidylic acid (poly(I:C)) on diabetes development was addressed, including the B cell-dependent activation of diabetes-protective DX5+ cells, using genetic models and adoptive transfer. RESULTS B lymphocytes from non-obese diabetic (NOD) mice expressed enhanced levels of TLR-responsive proteins. Ex vivo analysis of B lymphocyte subsets demonstrated that TLR3 stimulation via TRIF deletes cells exhibiting a marginal zone phenotype, whereas MyD88-dependent ligands enhance their survival. In vivo, marginal zone B cells were activated by poly(I:C) and were unexpectedly retained in the spleen of NOD mice, in contrast with the mobilization of these cells in non-autoimmune mice, a phenotype we traced to defective actin cytoskeletal dynamics. These activated B cells mediated TLR3-induced diabetes protection. CONCLUSIONS Immunotherapies must account for both B cell location and activation, and these properties may differ in autoimmune and healthy settings.
Collapse
Affiliation(s)
- Christopher S. Wilson
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, School of Medicine, 1161 21st Ave South. Nashville, TN 37232-2363
| | - Sydney K. Elizer
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University, School of Medicine, 2200 Children's Way. Nashville, TN 37232-2363
| | - Andrew F. Marshall
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University, School of Medicine, 2200 Children's Way. Nashville, TN 37232-2363
| | - Blair T. Stocks
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, School of Medicine, 1161 21st Ave South. Nashville, TN 37232-2363
- Vanderbilt Medical Scientist Training Program
| | - Daniel J. Moore
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, School of Medicine, 1161 21st Ave South. Nashville, TN 37232-2363
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University, School of Medicine, 2200 Children's Way. Nashville, TN 37232-2363
| |
Collapse
|
14
|
Campo M, Randhawa AK, Dunstan S, Farrar J, Caws M, Bang ND, Lan NN, Hong Chau TT, Horne DJ, Thuong NT, Thwaites GE, Hawn TR. Common polymorphisms in the CD43 gene region are associated with tuberculosis disease and mortality. Am J Respir Cell Mol Biol 2015; 52:342-8. [PMID: 25078322 DOI: 10.1165/rcmb.2014-0114oc] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
CD43, a surface glycoprotein, regulates Mycobacterium tuberculosis macrophage binding, replication, and proinflammatory cytokine induction in a murine model. We hypothesized that single-nucleotide polymorphisms (SNPs) in the CD43 gene region are associated with human tuberculosis (TB) susceptibility. We performed a case-population study in discovery (352 TB cases and 382 control subjects) and validation cohorts (339 TB cases and 376 control subjects). We examined whether 11 haplotype-tagging SNPs in the CD43 gene region were associated with tuberculous meningitis (TBM) and pulmonary TB (PTB) in Vietnam. Three SNPs from the CD43 gene region were associated with TB susceptibility with a genotypic model. The association fit a recessive genetic model and was greater for TBM than for PTB (for TBM: rs4788172, odds ratio [OR], 1.64; 95% confidence interval [CI], 1.04-2.59, rs17842268 [OR, 2.20; 95% CI, 1.29-3.76, and rs12596308 [OR, 2.38; 95% CI, 1.47-3.89]). Among TBM cases, rs17842268 was associated with decreased survival (hazard ratio, 2.7; 95% CI, 1.1-6.5; P = 0.011). In addition, rs12596308 and rs17842268 were associated with focal neurologic deficit at TBM presentation. Our data suggest that CD43 polymorphisms are associated with TB susceptibility, disease manifestations, and worse outcomes. To our knowledge, this is the first report that links CD43 genetic variants with susceptibility and outcome from a disease.
Collapse
|
15
|
Carvallo L, Lopez L, Che FY, Lim J, Eugenin EA, Williams DW, Nieves E, Calderon TM, Madrid-Aliste C, Fiser A, Weiss L, Angeletti RH, Berman JW. Buprenorphine decreases the CCL2-mediated chemotactic response of monocytes. THE JOURNAL OF IMMUNOLOGY 2015; 194:3246-58. [PMID: 25716997 DOI: 10.4049/jimmunol.1302647] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Despite successful combined antiretroviral therapy, ∼ 60% of HIV-infected people exhibit HIV-associated neurocognitive disorders (HAND). CCL2 is elevated in the CNS of infected people with HAND and mediates monocyte influx into the CNS, which is critical in neuroAIDS. Many HIV-infected opiate abusers have increased neuroinflammation that may augment HAND. Buprenorphine is used to treat opiate addiction. However, there are few studies that examine its impact on HIV neuropathogenesis. We show that buprenorphine reduces the chemotactic phenotype of monocytes. Buprenorphine decreases the formation of membrane projections in response to CCL2. It also decreases CCL2-induced chemotaxis and mediates a delay in reinsertion of the CCL2 receptor, CCR2, into the cell membrane after CCL2-mediated receptor internalization, suggesting a mechanism of action of buprenorphine. Signaling pathways in CCL2-induced migration include increased phosphorylation of p38 MAPK and of the junctional protein JAM-A. We show that buprenorphine decreases these phosphorylations in CCL2-treated monocytes. Using DAMGO, CTAP, and Nor-BNI, we demonstrate that the effect of buprenorphine on CCL2 signaling is opioid receptor mediated. To identify additional potential mechanisms by which buprenorphine inhibits CCL2-induced monocyte migration, we performed proteomic analyses to characterize additional proteins in monocytes whose phosphorylation after CCL2 treatment was inhibited by buprenorphine. Leukosialin and S100A9 were identified and had not been shown previously to be involved in monocyte migration. We propose that buprenorphine limits CCL2-mediated monocyte transmigration into the CNS, thereby reducing neuroinflammation characteristic of HAND. Our findings underscore the use of buprenorphine as a therapeutic for neuroinflammation as well as for addiction.
Collapse
Affiliation(s)
- Loreto Carvallo
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Lillie Lopez
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Fa-Yun Che
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Jihyeon Lim
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Eliseo A Eugenin
- Public Health Research Institute, Newark, NJ 07103; Department of Microbiology and Molecular Genetics, Rutgers New Jersey Medical School, Rutgers The State University of New Jersey, Newark, NJ 07103
| | - Dionna W Williams
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Edward Nieves
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Tina M Calderon
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Carlos Madrid-Aliste
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, Bronx, NY 10461; and
| | - Andras Fiser
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, Bronx, NY 10461; and
| | - Louis Weiss
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Ruth Hogue Angeletti
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Joan W Berman
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461; Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| |
Collapse
|
16
|
Wang L, Li X, Xiang B, Zhou M, Li X, Xiong W, Niu M, Wei P, Wang Z, Wang H, Chen P, Shen S, Peng S, Li G. NGX6a is degraded through a proteasome-dependent pathway without ubiquitination mediated by ezrin, a cytoskeleton-membrane linker. J Biol Chem 2014; 289:35731-42. [PMID: 25378401 DOI: 10.1074/jbc.m114.584771] [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] [Indexed: 01/28/2023] Open
Abstract
Our previous study demonstrated that the NGX6b gene acts as a suppressor in the invasion and migration of nasopharyngeal carcinoma (NPC). Recently, we identified the novel isoform NGX6a, which is longer than NGX6b. In this study, we first found that NGX6a was degraded in NPC cells and that this degradation was mediated by ezrin, a linker between membrane proteins and the cytoskeleton. Specific siRNAs against ezrin increase the protein level of NGX6a in these cells. During degradation, NGX6a is not ubiquitinated but is degraded through a proteasome-dependent pathway. The distribution pattern of ezrin was negatively associated with NGX6a in an immunochemistry analysis of a nasopharyngeal carcinoma tissue microarray and fetus multiple organ tissues and Western blot analysis in nasopharyngeal and NPC cell lines, suggesting that ezrin and NGX6a are associated and are involved in the progression and invasion of NPC. By mapping the interacting binding sites, the seven-transmembrane domain of NGX6a was found to be the critical region for the degradation of NGX6a, and the amino terminus of ezrin is required for the induction of NGX6a degradation. The knockdown of ezrin or transfection of the NGX6a mutant CO, which has an EGF-like domain and a transmembrane 1 domain, resulted in no degradation, significantly reducing the ability of invasion and migration of NPC cells. This study provides a novel molecular mechanism for the low expression of NGX6a in NPC cells and an important molecular event in the process of invasion and metastasis of nasopharyngeal carcinoma cells.
Collapse
Affiliation(s)
- Li Wang
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, the Department of Cardio-Thoracic Surgery, Second Xiangya Hospital of Central South University, 139 Renmin Middle Road, Changsha, Hunan 410012, China, and
| | - Xiaoling Li
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China
| | - Bo Xiang
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China
| | - Ming Zhou
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China
| | - Xiayu Li
- the Third Xiang-Ya Hospital, Central South University, Changsha, Hunan 410013, China
| | - Wei Xiong
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China
| | - Man Niu
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
| | - Pingpin Wei
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
| | - Zeyou Wang
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
| | - Heran Wang
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
| | - Pan Chen
- From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China
| | - Shourong Shen
- the Third Xiang-Ya Hospital, Central South University, Changsha, Hunan 410013, China
| | - Shuping Peng
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China,
| | - Guiyuan Li
- the Cancer Research Institute, Central South University, Changsha, Hunan 410078, China, From the Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, 582 Xianjiahu Road, Changsha, Hunan 410013, China,
| |
Collapse
|
17
|
Galindo-Albarrán AO, Ramírez-Pliego O, Labastida-Conde RG, Melchy-Pérez EI, Liquitaya-Montiel A, Esquivel-Guadarrama FR, Rosas-Salgado G, Rosenstein Y, Santana MA. CD43 signals prepare human T cells to receive cytokine differentiation signals. J Cell Physiol 2014; 229:172-80. [PMID: 24328034 DOI: 10.1002/jcp.24430] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
T cells are increasingly used for passive immunotherapy and bone marrow transplantation. Proper ex-vivo management of the cells is important for the desired therapeutic effects. For differentiation into effector cells of the Th1 and Th2 phenotypes, T-cells require signals from IFNγ and IL-4, respectively. Naïve cells have an extremely low expression of the specific receptors that recognize these cytokines, indicating that in order to differentiate, cells need to perceive other signals that will enable them to sense the cytokine milieu. CD43 has been proposed as one of the molecules that make the initial contacts with antigen presenting cells. We report here that in cord blood, adult naïve and total human T cells, CD43 signals induced the expression of both IFNγ and IL-4 receptors, mediate their capping, increased their signaling and augmented differentiation mediated by these receptors. CD43 signals also stimulated the expression of IFNγ and in neonatal cells that of IL-4 as well. These data demonstrate an important role for CD43 signals in T-cell preparedness for differentiation into effector cells.
Collapse
|
18
|
Cannon JL, Asperti-Boursin F, Letendre KA, Brown IK, Korzekwa KE, Blaine KM, Oruganti SR, Sperling AI, Moses ME. PKCθ regulates T cell motility via ezrin-radixin-moesin localization to the uropod. PLoS One 2013; 8:e78940. [PMID: 24250818 PMCID: PMC3826749 DOI: 10.1371/journal.pone.0078940] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 09/17/2013] [Indexed: 01/05/2023] Open
Abstract
Cell motility is a fundamental process crucial for function in many cell types, including T cells. T cell motility is critical for T cell-mediated immune responses, including initiation, activation, and effector function. While many extracellular receptors and cytoskeletal regulators have been shown to control T cell migration, relatively few signaling mediators have been identified that can modulate T cell motility. In this study, we find a previously unknown role for PKCθ in regulating T cell migration to lymph nodes. PKCθ localizes to the migrating T cell uropod and regulates localization of the MTOC, CD43 and ERM proteins to the uropod. Furthermore, PKCθ-deficient T cells are less responsive to chemokine induced migration and are defective in migration to lymph nodes. Our results reveal a novel role for PKCθ in regulating T cell migration and demonstrate that PKCθ signals downstream of CCR7 to regulate protein localization and uropod formation.
Collapse
Affiliation(s)
- Judy L. Cannon
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
- Department of Pathology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
- * E-mail:
| | - Francois Asperti-Boursin
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
- Department of Computer Science, University of New Mexico, Albuquerque, New Mexico, United States of America
| | - Kenneth A. Letendre
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
- Department of Computer Science, University of New Mexico, Albuquerque, New Mexico, United States of America
| | - Ivy K. Brown
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
| | - Katy E. Korzekwa
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
| | - Kelly M. Blaine
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, United States of America
| | - Sreenivasa R. Oruganti
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States of America
| | - Anne I. Sperling
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, United States of America
| | - Melanie E. Moses
- Department of Computer Science, University of New Mexico, Albuquerque, New Mexico, United States of America
| |
Collapse
|
19
|
Viswanatha R, Wayt J, Ohouo PY, Smolka MB, Bretscher A. Interactome analysis reveals ezrin can adopt multiple conformational states. J Biol Chem 2013; 288:35437-51. [PMID: 24151071 DOI: 10.1074/jbc.m113.505669] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Ezrin, a member of the ezrin-radixin-moesin family (ERM), is an essential regulator of the structure of microvilli on the apical aspect of epithelial cells. Ezrin provides a linkage between membrane-associated proteins and F-actin, oscillating between active/open and inactive/closed states, and is regulated in part by phosphorylation of a C-terminal threonine. In the open state, ezrin can bind a number of ligands, but in the closed state the ligand-binding sites are inaccessible. In vitro analysis has proposed that there may be a third hyperactivated form of ezrin. To gain a better understanding of ezrin, we conducted an unbiased proteomic analysis of ezrin-binding proteins in an epithelial cell line, Jeg-3. We refined our list of interactors by comparing the interactomes using quantitative mass spectrometry between wild-type ezrin, closed ezrin, open ezrin, and hyperactivated ezrin. The analysis reveals several novel interactors confirmed by their localization to microvilli, as well as a significant class of proteins that bind closed ezrin. Taken together, the data indicate that ezrin can exist in three different conformational states, and different ligands "perceive" ezrin conformational states differently.
Collapse
Affiliation(s)
- Raghuvir Viswanatha
- From the Department of Molecular Biology and Genetics and Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York 14853
| | | | | | | | | |
Collapse
|
20
|
Zhou HF, Yan H, Cannon JL, Springer LE, Green JM, Pham CTN. CD43-mediated IFN-γ production by CD8+ T cells promotes abdominal aortic aneurysm in mice. THE JOURNAL OF IMMUNOLOGY 2013; 190:5078-85. [PMID: 23585675 DOI: 10.4049/jimmunol.1203228] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CD43 is a glycosylated surface protein abundantly expressed on lymphocytes. Its role in immune responses has been difficult to clearly establish, with evidence supporting both costimulatory and inhibitory functions. In addition, its contribution to disease pathogenesis remains elusive. Using a well-characterized murine model of elastase-induced abdominal aortic aneurysm (AAA) that recapitulates many key features of the human disease, we established that the presence of CD43 on T cells is required for AAA formation. Moreover, we found that IFN-γ-producing CD8(+) T cells, but not CD4(+) T cells, promote the development of aneurysm by enhancing cellular apoptosis and matrix metalloprotease activity. Reconstitution with IFN-γ-producing CD8(+) T cells or recombinant IFN-γ promotes the aneurysm phenotype in CD43(-/-) mice, whereas IFN-γ antagonism abrogates disease in wild-type animals. Furthermore, we showed that the presence of CD43 with an intact cytoplasmic domain capable of binding to ezrin-radixin-moesin cytoskeletal proteins is essential for optimal in vivo IFN-γ production by T cells and aneurysm formation. We have thus identified a robust physiologic role for CD43 in a relevant animal model and established an important in vivo function for CD43-dependent regulation of IFN-γ production. These results further suggest that IFN-γ antagonism or selective blockade of CD43(+)CD8(+) T cell activities merits further investigation for immunotherapy in AAA.
Collapse
Affiliation(s)
- Hui-fang Zhou
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | | | | | | | | | | |
Collapse
|
21
|
Chen EJH, Shaffer MH, Williamson EK, Huang Y, Burkhardt JK. Ezrin and moesin are required for efficient T cell adhesion and homing to lymphoid organs. PLoS One 2013; 8:e52368. [PMID: 23468835 PMCID: PMC3585410 DOI: 10.1371/journal.pone.0052368] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 11/12/2012] [Indexed: 01/13/2023] Open
Abstract
T cell trafficking between the blood and lymphoid organs is a complex, multistep process that requires several highly dynamic and coordinated changes in cyto-architecture. Members of the ezrin, radixin and moesin (ERM) family of actin-binding proteins have been implicated in several aspects of this process, but studies have yielded conflicting results. Using mice with a conditional deletion of ezrin in CD4+ cells and moesin-specific siRNA, we generated T cells lacking ERM proteins, and investigated the effect on specific events required for T cell trafficking. ERM-deficient T cells migrated normally in multiple in vitro and in vivo assays, and could undergo efficient diapedesis in vitro. However, these cells were impaired in their ability to adhere to the β1 integrin ligand fibronectin, and to polarize appropriately in response to fibronectin and VCAM-1 binding. This defect was specific for β1 integrins, as adhesion and polarization in response to ICAM-1 were normal. In vivo, ERM-deficient T cells showed defects in homing to lymphoid organs. Taken together, these results show that ERM proteins are largely dispensable for T cell chemotaxis, but are important for β1 integrin function and homing to lymphoid organs.
Collapse
Affiliation(s)
- Emily J. H. Chen
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Meredith H. Shaffer
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Edward K. Williamson
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Yanping Huang
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Janis K. Burkhardt
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- * E-mail:
| |
Collapse
|
22
|
Navare AT, Sova P, Purdy DE, Weiss JM, Wolf-Yadlin A, Korth MJ, Chang ST, Proll SC, Jahan TA, Krasnoselsky AL, Palermo RE, Katze MG. Quantitative proteomic analysis of HIV-1 infected CD4+ T cells reveals an early host response in important biological pathways: protein synthesis, cell proliferation, and T-cell activation. Virology 2012; 429:37-46. [PMID: 22542004 DOI: 10.1016/j.virol.2012.03.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Revised: 02/07/2012] [Accepted: 03/30/2012] [Indexed: 10/28/2022]
Abstract
Human immunodeficiency virus (HIV-1) depends upon host-encoded proteins to facilitate its replication while at the same time inhibiting critical components of innate and/or intrinsic immune response pathways. To characterize the host cell response on protein levels in CD4+ lymphoblastoid SUP-T1 cells after infection with HIV-1 strain LAI, we used mass spectrometry (MS)-based global quantitation with iTRAQ (isobaric tag for relative and absolute quantification). We found 266, 60 and 22 proteins differentially expressed (DE) (P-value ≤ 0.05) at 4, 8, and 20 hours post-infection (hpi), respectively, compared to time-matched mock-infected samples. The majority of changes in protein abundance occurred at an early stage of infection well before the de novo production of viral proteins. Functional analyses of these DE proteins showed enrichment in several biological pathways including protein synthesis, cell proliferation, and T-cell activation. Importantly, these early changes before the time of robust viral production have not been described before.
Collapse
Affiliation(s)
- Arti T Navare
- Department of Microbiology, University of Washington, Seattle, WA 98195-8070, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Clark MC, Baum LG. T cells modulate glycans on CD43 and CD45 during development and activation, signal regulation, and survival. Ann N Y Acad Sci 2012; 1253:58-67. [PMID: 22288421 DOI: 10.1111/j.1749-6632.2011.06304.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Glycosylation affects many essential T cell processes and is intrinsically controlled throughout the lifetime of a T cell. CD43 and CD45 are the two most abundant glycoproteins on the T cell surface and are decorated with O- and N-glycans. Global T cell glycosylation and specific glycosylation of CD43 and CD45 are modulated during thymocyte development and T cell activation; T cells control the type and abundance of glycans decorating CD43 and CD45 by regulating expression of glycosyltransferases and glycosidases. Additionally, T cells regulate glycosylation of CD45 by expressing alternatively spliced isoforms of CD45 that have different glycan attachment sites. The glycophenotype of CD43 and CD45 on T cells influences how T cells interact with the extracellular environment, including how T cells interact with endogenous lectins. This review focuses on changes in glycosylation of CD43 and CD45 occurring throughout T cell development and activation and the role that glycosylation plays in regulating T cell processes, such as migration, T cell receptor signaling, and apoptosis.
Collapse
Affiliation(s)
- Mary C Clark
- Department of Pathology and Laboratory Medicine, UCLA School of Medicine, University of California, Los Angeles, USA
| | | |
Collapse
|