title: CD24: from a Hematopoietic Differentiation Antigen to a Genetic Risk Factor for Multiple Autoimmune Diseases.
abstract: The autoantibody is an essential characteristic of inflammatory disorders, including autoimmune diseases. Although the exact pathogenic mechanisms of these diseases remain elusive, accumulated evidence has implicated that genetic factors play important roles in autoimmune inflammation. Among these factors, CD24 was first identified as a heat-stable antigen in 1978 and first successfully cloned in 1990. Thereafter, its functional roles have been intensively investigated in various human diseases, especially autoimmune diseases and cancers. It is currently known that CD24 serves as a costimulatory factor of T cells that regulate their homeostasis and proliferation, while in B cells, CD24 is functionally involved in cell activation and differentiation. CD24 can enhance autoimmune diseases in terms of its protective role in the clonal deletion of autoreactive thymocytes. Furthermore, CD24 deficiency has been linked to mouse experimental autoimmune encephalomyelitis. Finally, CD24 genetic variants, including single-nucleotide polymorphisms and deletions, are etiologically relevant to autoimmune diseases, such as multiple sclerosis and systemic lupus erythematosus. Therefore, CD24 is a promising biomarker and novel therapeutic target for autoimmune diseases.
authors: Department of Dermatology, Second Xiangya Hospital, Hunan Key Laboratory of Medical Epigenetics, Central South University, #139 Renmin Middle Rd, Changsha, Hunan, 410011, People's Republic of China.
authors: Yixin
authors: Y
authors: Tan
authors: Department of Dermatology, Second Xiangya Hospital, Hunan Key Laboratory of Medical Epigenetics, Central South University, #139 Renmin Middle Rd, Changsha, Hunan, 410011, People's Republic of China.
authors: Ming
authors: M
authors: Zhao
authors: Cancer Research Institute, Xiangya School of Medicine, Central South University, #110 Xiangya Road, Changsha, Hunan, 410078, People's Republic of China.
authors: Bo
authors: B
authors: Xiang
authors: Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, Suite 6510, 451 Health Sciences Drive, Davis, CA, 95616, USA.
authors: Christopher
authors: C
authors: Chang
authors: Department of Dermatology, Second Xiangya Hospital, Hunan Key Laboratory of Medical Epigenetics, Central South University, #139 Renmin Middle Rd, Changsha, Hunan, 410011, People's Republic of China. epigenetics2010@126.com.
authors: Qianjin
authors: Q
authors: Lu
mesh_terms: D000818:Animals; D000938:Antigen-Presenting Cells / Q000276:immunology / Q000378:metabolism; D001327:Autoimmune Diseases / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology* / Q000378:metabolism*; D001402:B-Lymphocytes / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D051927:CD24 Antigen / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D002454:Cell Differentiation; D060966:Clonal Selection, Antigen-Mediated; D004198:Disease Susceptibility; D015870:Gene Expression; D020022:Genetic Predisposition to Disease; D006031:Glycosylation; D006801:Humans; D008024:Ligands; D008213:Lymphocyte Activation; D058990:Molecular Targeted Therapy; D009369:Neoplasms / Q000209:etiology / Q000378:metabolism; D009928:Organ Specificity; D012307:Risk Factors; D015398:Signal Transduction; D016176:T-Lymphocyte Subsets / Q000166:cytology / Q000276:immunology / Q000378:metabolism
chemical_list: D051927:CD24 Antigen; D008024:Ligands
keywords: Autoantibodies; Autoimmune diseases; CD24; Genetic susceptibility; Hematopoietic differentiation antigen