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Murthy D, Dutta D, Attri KS, Samanta T, Yang S, Jung KH, Latario SG, Putluri V, Huang S, Putluri N, Park JH, Kaipparettu BA. CD24 negativity reprograms mitochondrial metabolism to PPARα and NF-κB-driven fatty acid β-oxidation in triple-negative breast cancer. Cancer Lett 2024; 587:216724. [PMID: 38373689 PMCID: PMC11068061 DOI: 10.1016/j.canlet.2024.216724] [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: 10/17/2023] [Revised: 02/06/2024] [Accepted: 02/09/2024] [Indexed: 02/21/2024]
Abstract
CD24 is a well-characterized breast cancer (BC) stem cell (BCSC) marker. Primary breast tumor cells having CD24-negativity together with CD44-positivity is known to maintain high metastatic potential. However, the functional role of CD24 gene in triple-negative BC (TNBC), an aggressive subtype of BC, is not well understood. While the significance of CD24 in regulating immune pathways is well recognized in previous studies, the significance of CD24 low expression in onco-signaling and metabolic rewiring is largely unknown. Using CD24 knock-down and over-expression TNBC models, our in vitro and in vivo analysis suggest that CD24 is a tumor suppressor in metastatic TNBC. Comprehensive in silico gene expression analysis of breast tumors followed by lipidomic and metabolomic analyses of CD24-modulated cells revealed that CD24 negativity induces mitochondrial oxidative phosphorylation and reprograms TNBC metabolism toward the fatty acid beta-oxidation (FAO) pathway. CD24 silencing activates PPARα-mediated regulation of FAO in TNBC cells. Further analysis using reverse-phase protein array and its validation using CD24-modulated TNBC cells and xenograft models nominated CD24-NF-κB-CPT1A signaling pathway as the central regulatory mechanism of CD24-mediated FAO activity. Overall, our study proposes a novel role of CD24 in metabolic reprogramming that can open new avenues for the treatment strategies for patients with metastatic TNBC.
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Affiliation(s)
- Divya Murthy
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Debasmita Dutta
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Kuldeep S Attri
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Tagari Samanta
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Sukjin Yang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Kwang Hwa Jung
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Sarah G Latario
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Vasanta Putluri
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, USA
| | - Shixia Huang
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA; Department of Education, Innovation, and Technology, Baylor College of Medicine, Houston, TX, USA
| | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Jun Hyoung Park
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
| | - Benny Abraham Kaipparettu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA.
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2
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Wang H, Shi P, Shi X, Lv Y, Xie H, Zhao H. Surprising magic of CD24 beyond cancer. Front Immunol 2024; 14:1334922. [PMID: 38313430 PMCID: PMC10834733 DOI: 10.3389/fimmu.2023.1334922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 12/28/2023] [Indexed: 02/06/2024] Open
Abstract
CD24 has emerged as a molecule of significant interest beyond the oncological arena. Recent studies have unveiled its surprising and diverse roles in various biological processes and diseases. This review encapsulates the expanding spectrum of CD24 functions, delving into its involvement in immune regulation, cancer immune microenvironment, and its potential as a therapeutic target in autoimmune diseases and beyond. The 'magic' of CD24, once solely attributed to cancer, now inspires a new paradigm in understanding its multifunctionality in human health and disease, offering exciting prospects for medical advancements.
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Affiliation(s)
- He Wang
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Peng Shi
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinyu Shi
- Department of Radiology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yaqing Lv
- Department of Outpatient, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hongwei Xie
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hai Zhao
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao, China
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3
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Liu Y, Zheng P. CD24-Siglec interactions in inflammatory diseases. Front Immunol 2023; 14:1174789. [PMID: 37228622 PMCID: PMC10203428 DOI: 10.3389/fimmu.2023.1174789] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/13/2023] [Indexed: 05/27/2023] Open
Abstract
CD24 is a small glycosylphosphatidylinositol (GPI)-anchored glycoprotein with broad expression in multiple cell types. Due to differential glycosylation, cell surface CD24 have been shown to interact with various receptors to mediate multiple physiological functions. Nearly 15 years ago, CD24 was shown to interact with Siglec G/10 to selectively inhibit inflammatory response to tissue injuries. Subsequent studies demonstrate that sialylated CD24 (SialoCD24) is a major endogenous ligand for CD33-family of Siglecs to protect the host against inflammatory and autoimmune diseases, metabolic disorders and most notably respiratory distress in COVID-19. The discoveries on CD24-Siglec interactions propelled active translational research to treat graft-vs-host diseases, cancer, COVID-19 and metabolic disorders. This mini-review provides a succinct summary on biological significance of CD24-Siglec pathway in regulation of inflammatory diseases with emphasis on clinical translation.
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Emerging phagocytosis checkpoints in cancer immunotherapy. Signal Transduct Target Ther 2023; 8:104. [PMID: 36882399 PMCID: PMC9990587 DOI: 10.1038/s41392-023-01365-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 01/31/2023] [Accepted: 02/14/2023] [Indexed: 03/09/2023] Open
Abstract
Cancer immunotherapy, mainly including immune checkpoints-targeted therapy and the adoptive transfer of engineered immune cells, has revolutionized the oncology landscape as it utilizes patients' own immune systems in combating the cancer cells. Cancer cells escape immune surveillance by hijacking the corresponding inhibitory pathways via overexpressing checkpoint genes. Phagocytosis checkpoints, such as CD47, CD24, MHC-I, PD-L1, STC-1 and GD2, have emerged as essential checkpoints for cancer immunotherapy by functioning as "don't eat me" signals or interacting with "eat me" signals to suppress immune responses. Phagocytosis checkpoints link innate immunity and adaptive immunity in cancer immunotherapy. Genetic ablation of these phagocytosis checkpoints, as well as blockade of their signaling pathways, robustly augments phagocytosis and reduces tumor size. Among all phagocytosis checkpoints, CD47 is the most thoroughly studied and has emerged as a rising star among targets for cancer treatment. CD47-targeting antibodies and inhibitors have been investigated in various preclinical and clinical trials. However, anemia and thrombocytopenia appear to be formidable challenges since CD47 is ubiquitously expressed on erythrocytes. Here, we review the reported phagocytosis checkpoints by discussing their mechanisms and functions in cancer immunotherapy, highlight clinical progress in targeting these checkpoints and discuss challenges and potential solutions to smooth the way for combination immunotherapeutic strategies that involve both innate and adaptive immune responses.
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Zheng X, Wang P, Song J, Tang Y, Xie Y, Jin X, Zhu D, Fang X, Wei C, Li R, Hu F, Li Z. Soluble CD24 is an inflammatory biomarker in early and seronegative rheumatoid arthritis. Ann Med 2023; 55:2246370. [PMID: 37591778 PMCID: PMC10438858 DOI: 10.1080/07853890.2023.2246370] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/24/2023] [Accepted: 08/05/2023] [Indexed: 08/19/2023] Open
Abstract
Introduction: Rheumatoid arthritis (RA) is a chronic, systemic autoimmune disease characterized by autoantibody production, joint inflammation and bone destruction. Nearly 1/3 of RA patients with the active disease also exhibit a normal range of ESR and CRP. Here we assessed the performance and clinical significance of soluble CD24 (sCD24) as a biomarker of disease activity in RA.Methods: A total of 269 RA patients, 59 primary Sjogren's syndrome (SS) patients, 81 systematic lupus erythematosus (SLE) patients, 76 osteoarthritis (OA) patients and 97 healthy individuals (HC) were included in this study. Soluble CD24 in sera were detected by ELISA. Therefore, the concentration of sCD24 was analyzed in RA patients with different disease activity statuses.Results: The sCD24 was significantly increased in RA (2970 pg/mL), compared to other rheumatic diseases (380-520 pg/mL) and healthy individuals (320 pg/mL). Moreover, sCD24 was elevated in 66.67% of early RA and 61.11% of seronegative RA patients. In addition, sCD24 was significantly correlated with the disease duration and inflammatory indicators.Conclusion: The sCD24 could be an inflammatory biomarker in RA patients, especially in early and seronegative patients.
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Affiliation(s)
- Xi Zheng
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Ping Wang
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
| | - Jing Song
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Yundi Tang
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
| | - Yang Xie
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
| | - Xu Jin
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Danxue Zhu
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Xiangyu Fang
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
| | - Chaonan Wei
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
| | - Ru Li
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
| | - Fanlei Hu
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Zhanguo Li
- Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
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6
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Yang Y, Zheng H, Tang J. miR-114 Derived from Bone Marrow Mesenchymal Stem Cells Regulates the Metastasis of Prostate Cancer Cells by Targeting P53 Gene. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Prostate cancer (PCa) in the elderly is a malignancy primary to the prostate and a common tumor in the male urogenital line. However, no effective treatment has been developed for prostate cancer. Previous studies have shown that BMSCs-derived miR-114 can inhibit tumor cell development.
Therefore, we intend to determine the role of BMSCs-derived miR-114 and p53 in PCa. Human prostate cancer cells (LNCaP) and BMSCs were inoculated into 12-well plates. After interfering the expression of miR-114 in BMSCs, the culture medium was collected and used to treat LNCaP followed by
analysis of cell behaviors. miR-114 inhibited p53 level in BMSC-derived exosomes, thereby inhibiting the proliferation, invasion and migration of PCa cells, and enhancing cell apoptosis. In conclusion, BMSCs-derived miR-114 inhibits the proliferation, migration, invasion and promotes apoptosis
of prostate cancer cells by down-regulating p53.
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Affiliation(s)
- Yongkui Yang
- Department of Urology, People’s Hospital of Zhaoyuan City, Zhaoyuan, Shandong, 265400, China
| | - Hong Zheng
- Department of Urology, Shonan College Affiliated Hospital, Chenzhou, Hunan, 423000, China
| | - Jiansheng Tang
- Department of Urology, Shonan College Affiliated Hospital, Chenzhou, Hunan, 423000, China
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7
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Shi Y, Zhu J, Liu JQ, Talebian F, Li M, Bai XF. CD24 is expressed on FoxP3 + regulatory T cells and regulates their function. Am J Transl Res 2022; 14:2291-2300. [PMID: 35559385 PMCID: PMC9091082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 01/26/2022] [Indexed: 06/15/2023]
Abstract
CD24 is a glycosyl-phosphatidylinositol (GPI) anchored cell surface glycoprotein with a variety of immunomodulatory functions such as inhibition of thymic generation of autoreactive T cells, regulation of antigen presenting cell functions, and mediation of autoimmunity. Given the autoimmune nature of FoxP3+ regulatory T cells and their importance in autoimmune diseases, we hypothesize that CD24 regulates the generation and functions of Treg cells. Through the analysis of the Treg repertoire in two strains of CD24-deficient mice, we found that CD24 does not globally affect the thymic generation of Treg cells. However, CD24 is abundantly expressed on Treg cells, and CD24 antibody treatment of Treg cells enhances their suppressive functions. Concurrently, we observed CD24-deficient Treg cells exhibit increased suppressive functions and produce more IL-10 compared to their wild type counterparts. In addition, CD24-deficient Treg cells exhibited more potent suppressive capacity in inhibiting the development of experimental autoimmune encephalomyelitis (EAE) in mice. Thus, CD24 on Treg cells regulates their suppressive functions. Our findings can partially explain the resistance of EAE development in CD24-deficient mice and CD24 polymorphism-associated susceptibility of human autoimmune diseases. Further investigations regarding mechanisms of CD24 regulation of Treg function may lead to a new approach for the immunotherapy of human autoimmune diseases.
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Affiliation(s)
- Yun Shi
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical CenterColumbus, OH 43201, USA
- Department of Gastroenterology, Nanfang Hospital, Southern Medical UniversityGuangzhou 510510, Guangdong, China
| | - Jing Zhu
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical CenterColumbus, OH 43201, USA
- Department of Gastroenterology, Nanfang Hospital, Southern Medical UniversityGuangzhou 510510, Guangdong, China
| | - Jin-Qing Liu
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical CenterColumbus, OH 43201, USA
| | - Fatemeh Talebian
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical CenterColumbus, OH 43201, USA
| | - Mingsong Li
- Department of Gastroenterology, Nanfang Hospital, Southern Medical UniversityGuangzhou 510510, Guangdong, China
- Current address: Department of Gastroenterology, Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510145, China
| | - Xue-Feng Bai
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical CenterColumbus, OH 43201, USA
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Knoedler JR, Inoue S, Bayless DW, Yang T, Tantry A, Davis CH, Leung NY, Parthasarathy S, Wang G, Alvarado M, Rizvi AH, Fenno LE, Ramakrishnan C, Deisseroth K, Shah NM. A functional cellular framework for sex and estrous cycle-dependent gene expression and behavior. Cell 2022; 185:654-671.e22. [PMID: 35065713 PMCID: PMC8956134 DOI: 10.1016/j.cell.2021.12.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/22/2021] [Accepted: 12/20/2021] [Indexed: 01/05/2023]
Abstract
Sex hormones exert a profound influence on gendered behaviors. How individual sex hormone-responsive neuronal populations regulate diverse sex-typical behaviors is unclear. We performed orthogonal, genetically targeted sequencing of four estrogen receptor 1-expressing (Esr1+) populations and identified 1,415 genes expressed differentially between sexes or estrous states. Unique subsets of these genes were distributed across all 137 transcriptomically defined Esr1+ cell types, including estrous stage-specific ones, that comprise the four populations. We used differentially expressed genes labeling single Esr1+ cell types as entry points to functionally characterize two such cell types, BNSTprTac1/Esr1 and VMHvlCckar/Esr1. We observed that these two cell types, but not the other Esr1+ cell types in these populations, are essential for sex recognition in males and mating in females, respectively. Furthermore, VMHvlCckar/Esr1 cell type projections are distinct from those of other VMHvlEsr1 cell types. Together, projection and functional specialization of dimorphic cell types enables sex hormone-responsive populations to regulate diverse social behaviors.
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Affiliation(s)
- Joseph R Knoedler
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Sayaka Inoue
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Daniel W Bayless
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Taehong Yang
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Adarsh Tantry
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Chung-Ha Davis
- Neurosciences Graduate Program, Stanford University, Stanford, CA 94305, USA
| | - Nicole Y Leung
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | | | - Grace Wang
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Maricruz Alvarado
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Abbas H Rizvi
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA
| | - Lief E Fenno
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | | | - Karl Deisseroth
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA; Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Nirao M Shah
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA; Department of Neurobiology, Stanford University, Stanford, CA 94305, USA.
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9
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Ni YH, Zhao X, Wang W. CD24, A Review of its Role in Tumor Diagnosis, Progression and Therapy. Curr Gene Ther 2021; 20:109-126. [PMID: 32576128 DOI: 10.2174/1566523220666200623170738] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/28/2020] [Accepted: 06/02/2020] [Indexed: 02/08/2023]
Abstract
CD24, is a mucin-like GPI-anchored molecules. By immunohistochemistry, it is widely detected in many solid tumors, such as breast cancers, genital system cancers, digestive system cancers, neural system cancers and so on. The functional roles of CD24 are either fulfilled by combination with ligands or participate in signal transduction, which mediate the initiation and progression of neoplasms. However, the character of CD24 remains to be intriguing because there are still opposite voices about the impact of CD24 on tumors. In preclinical studies, CD24 target therapies, including monoclonal antibodies, target silencing by RNA interference and immunotherapy, have shown us brighten futures on the anti-tumor application. Nevertheless, evidences based on clinical studies are urgently needed. Here, with expectancy to spark new ideas, we summarize the relevant studies about CD24 from a tumor perspective.
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Affiliation(s)
- Yang-Hong Ni
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu 610041, Sichuan, China
| | - Xia Zhao
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, 610041, China
| | - Wei Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu 610041, Sichuan, China
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10
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Altevogt P, Sammar M, Hüser L, Kristiansen G. Novel insights into the function of CD24: A driving force in cancer. Int J Cancer 2020; 148:546-559. [PMID: 32790899 DOI: 10.1002/ijc.33249] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/23/2020] [Accepted: 07/28/2020] [Indexed: 12/12/2022]
Abstract
CD24 is a highly glycosylated protein with a small protein core that is linked to the plasma membrane via a glycosyl-phosphatidylinositol anchor. CD24 is primarily expressed by immune cells but is often overexpressed in human tumors. In cancer, CD24 is a regulator of cell migration, invasion and proliferation. Its expression is associated with poor prognosis and it is used as cancer stemness marker. Recently, CD24 on tumor cells was identified as a phagocytic inhibitor ("do not eat me" signal) having a suppressive role in tumor immunity via binding to Siglec-10 on macrophages. This finding is reminiscent of the demonstration that soluble CD24-Fc can dampen the immune system in autoimmune disease. In the present review, we summarize recent progress on the role of the CD24-Siglec-10 binding axis at the interface between tumor cells and the immune system, and the role of CD24 genetic polymorphisms in cancer. We describe the specific function of cytoplasmic CD24 and discuss the presence of CD24 on tumor-released extracellular vesicles. Finally, we evaluate the potential of CD24-based immunotherapy.
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Affiliation(s)
- Peter Altevogt
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Marei Sammar
- ORT Braude College for Engineering, Karmiel, Israel
| | - Laura Hüser
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
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11
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Segev L, Naboishchikov I, Kazanov D, Bernstein E, Shaked M, Arber N, Shapira S. A Dinucleotide Deletion in the CD24 Gene Is a Potential Risk Factor for Colorectal Cancer. Am Surg 2020; 86:480-485. [PMID: 32684047 DOI: 10.1177/0003134820919737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND CD24 is a sialoglycoprotein anchored to the cell surface via glycosylphosphatidylinositol and is involved in intracellular signaling processes. It plays an important role in the early stages of the multistep process of colorectal carcinogenesis. Several single nucleotide polymorphisms in the CD24 gene are reported to exert a diverse effect on cancer risk. We aimed to elucidate whether CD24 TG/del genetic variants are associated with susceptibility to colorectal cancer (CRC). METHODS The study included 179 subjects, 36 with CRC (prior to surgery) and 143 healthy control subjects. Deoxyribonucleic acid was purified from peripheral blood leukocytes, and by using restriction fragment length polymorphism analysis, the CD24 gene was genotyped for the specific genetic variant, TG deletion. Additionally, CD24 protein expression levels were determined by Western blotting analysis. RESULTS The incidence of the TG/del was higher among the CRC patients compared with healthy controls, 14% and 10%, respectively (P = .54). CD24 protein levels were significantly higher among CRC patients. There were no significant differences in CD24 expression between CRC patients at different stages of the disease or between patients who carry the mutation and those who did not. CONCLUSIONS CD24 genetic variant might be of clinical value for risk assessment as part of cancer prevention programs. Further study on larger populations is needed to validate the importance of this dinucleotide deletion in CRC development. Overexpression of CD24 protein occurs early along the multistep process of CRC carcinogenesis, and a simple blood sample based on CD24 expression on peripheral blood leukocytes can contribute to early diagnosis.
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Affiliation(s)
- Lior Segev
- 26744 Department of Surgical Oncology, Surgery C, Sheba Medical Center, Tel Hashomer, Israel.,26738 Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilana Naboishchikov
- 26738 Laboratory of Molecular Biology, The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Diana Kazanov
- 26738 Laboratory of Molecular Biology, The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Ezra Bernstein
- 26738 Laboratory of Molecular Biology, The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Meital Shaked
- 26738 Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nadir Arber
- 26738 Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,26738 Laboratory of Molecular Biology, The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Shiran Shapira
- 26738 Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,26738 Laboratory of Molecular Biology, The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel-Aviv, Israel
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12
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Liu W, Zhang Y, Wei S, Bae S, Yang WH, Smith GJ, Mohler JL, Fontham ET, Bensen JT, Sonpavde GP, Chen G, Liu R, Wang L. A CD24-p53 axis contributes to African American prostate cancer disparities. Prostate 2020; 80:609-618. [PMID: 32168400 PMCID: PMC7176538 DOI: 10.1002/pros.23973] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 03/03/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Using a functional analysis of prostate cancer cells, we found a CD24-dependent inactivation of mutant p53, but the clinical significance of this observation remained uncertain. Here, we validated these results with samples of human prostate cancer and explored the role of a CD24-p53 axis in racial disparities of prostate cancer. METHODS Samples of formalin-fixed, paraffin-embedded prostate cancer from 141 European Americans (EAs) and 147 African Americans (AAs) in two independent sample cohorts were assessed for protein expression of CD24, mutant p53, mouse double minute 2 human homolog (MDM2), and cyclin dependent kinase inhibitor 2A (ARF) using immunohistochemical analyses. All samples were analyzed for TP53R175H and TP53R273H . RESULTS CD24, mutant p53, MDM2, and ARF proteins were expressed in 55%, 24%, 39%, and 68% of prostate cancer samples, respectively. CD24 and mutant p53 were present more frequently in late-stage and metastatic prostate cancer. The presence of CD24 was associated with a greater than fourfold risk of metastasis, which included lymph node and distant metastases. H score analysis showed positive correlations of CD24 expression with mutant p53 (r = .308, P < .001) and MDM2 (r = .227, P = .004). There was a negative correlation for CD24 with ARF (r = -.280, P < .001). A racial disparity was evident for CD24 (AAs/EAs: 64% vs 47%; P = .004) but not for mutant p53 (AA/EA: 28% vs 21%; P = .152). In 32 CD24+ /mutant p53+ cases, a TP53R273H mutation was found in five cases, but no TP53R175H mutation was found. CONCLUSION The CD24-p53 axis may contribute to aggressive and metastatic prostate cancers, especially those of AAs. This observation enhances understanding of the pathogenesis of prostate cancer and its associated racial disparities.
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Affiliation(s)
- Wei Liu
- Department of Genetics and O’Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Yue Zhang
- Department of Genetics and O’Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Shi Wei
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sejong Bae
- Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Wei-Hsiung Yang
- Department of Biomedical Sciences, Mercer University, Savannah, Georgia
| | - Gary J. Smith
- Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - James L. Mohler
- Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Elizabeth T.H. Fontham
- School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Jeannette T. Bensen
- Lineberger Comprehensive Cancer Center and Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | | | - Guoyun Chen
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Runhua Liu
- Department of Genetics and O’Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Lizhong Wang
- Department of Genetics and O’Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
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Zhang CC, Voitl R, Hippchen T, Weiss KH, Sauer P, Rupp C. Evaluation of two functional CD24 polymorphisms in primary sclerosing cholangitis. Scand J Gastroenterol 2020; 55:581-587. [PMID: 32329406 DOI: 10.1080/00365521.2020.1755357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Background: Primary sclerosing cholangitis (PSC) is a progressive liver disease and characterized by chronic inflammation, sclerosis and strictures of bile ducts. Several genetic risk factors might contribute to pathogenesis. Functional single nucleotide polymorphisms (SNPs) in the CD24 gene have been associated with the development of autoimmune and autoinflammatory diseases and might contribute to the susceptibility for inflammatory bowel disease (IBD).Aim: This retrospective study aimed to evaluate the impact of two functional CD24 SNPs on clinical features and disease progression in patients with PSC.Methods: A C to T coding polymorphism (rs8734) and a TG deletion in the 3´- untranslated region (rs3838646) were genotyped. The study cohort comprises of 359 PSC patients for rs3838646 genotype and 335 PSC patients for rs8734 genotype. Clinical and laboratory parameters were collected by chart review.Results: For the rs8734 genotype, 175 patients (52.2%) were found to be homozygous wildtype ('Ala/Ala'), 127 (37.9%) patients were heterozygous ('Ala/Val') and 33 patients (9.9%) were homozygous mutant ('Val/Val'). The rs8734genotype was associated with a decreased risk for dominant strictures at first diagnosis of PSC (p = .04). For the rs3838646 genotype, 322 patients (89.7%) were found to be homozygous wildtype ('TG/TG'); 37 showed the 'TG/del' genotype (10.3%). The 'TG/del'genotype was associated with alower risk of IBD (p = .01).There was no influence of both CD24 SNPs with clinical end points or transplantation-free survival in our PSC cohort.Conclusion: Our results suggest a mild association of the rs8734 CD24 genotype with dominant strictures at first diagnosis of PSC. The rs3838646 CD24 genotype is associated with a lower rate of IBD. Both SNPs seem to modulate the clinical phenotype without major pathogenetic importance for disease progression in PSC.
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Affiliation(s)
| | - Robert Voitl
- Department of Gastroenterology, University Hospital Heidelberg, Heidelberg, Germany
| | - Theresa Hippchen
- Department of Gastroenterology, University Hospital Heidelberg, Heidelberg, Germany
| | - Karl-Heinz Weiss
- Department of Gastroenterology, University Hospital Heidelberg, Heidelberg, Germany
| | - Peter Sauer
- Department of Gastroenterology, University Hospital Heidelberg, Heidelberg, Germany
| | - Christian Rupp
- Department of Gastroenterology, University Hospital Heidelberg, Heidelberg, Germany
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Yang W, Zhou W, Zhang BK, Kong LS, Zhu XX, Wang RX, Yang Y, Chen YF, Chen LR. Association between CD24 Ala/Val polymorphism and multiple sclerosis risk: A meta analysis. Medicine (Baltimore) 2020; 99:e19530. [PMID: 32282702 PMCID: PMC7440312 DOI: 10.1097/md.0000000000019530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The aim of this study was to explore the association between CD24 Ala/Val polymorphism and susceptibility of multiple sclerosis (MS). METHODS A comprehensive literature search for relevant studies was performed on google scholar, PubMed, Web of science, Embase, the Chinese National Knowledge Infrastructure and the Chinese Biology Medicine. This meta-analysis was conducted using the STATA 11.0 software and the pooled odds ratio with 95% confidence interval was calculated. RESULTS Seven case-control studies were included in this meta-analysis. The results showed significant association between CD24 Ala/Val polymorphism and susceptibility to MS. Stratified analysis by areas also showed significant association in Asians. However, no association was found in Europeans. CONCLUSION This study suggested that the CD24 Val allele was associated with an increased risk of MS and larger-scale studies of populations are needed to explore the role of CD24 Ala/Val polymorphism during the pathogenesis of MS.
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Affiliation(s)
- Wan Yang
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Wang Zhou
- Department of Ultrasound, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Bo-Kang Zhang
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Ling-Suo Kong
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Xing-Xing Zhu
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Rui-Xiang Wang
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Yue Yang
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Yun-Fei Chen
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
| | - Lan-Ren Chen
- Department of Anesthesiology, Anhui Provincial Cancer Hospital, Hefei
- Department of Anesthesiology, West District of Anhui Provincial Hospital, Hefei
- Department of Anesthesiology, West District of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei
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Moghbeli M. Genetic and Molecular Biology of Multiple Sclerosis Among Iranian Patients: An Overview. Cell Mol Neurobiol 2019; 40:65-85. [PMID: 31482432 DOI: 10.1007/s10571-019-00731-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 08/24/2019] [Indexed: 12/16/2022]
Abstract
Multiple sclerosis (MS) is one if the common types of autoimmune disorders in developed countries. Various environmental and genetic factors are associated with initiation and progression of MS. It is believed that the life style changes can be one of the main environmental risk factors. The environmental factors are widely studied and reported, whereas minority of reports have considered the role of genetic factors in biology of MS. Although Iran is a low-risk country in the case of MS prevalence, it has been shown that there was a dramatically rising trend of MS prevalence among Iranian population during recent decades. Therefore, it is required to assess the probable MS risk factors in Iran. In the present study, we summarized all of the reported genes until now which have been associated with MS susceptibility among Iranian patients. To clarify the probable molecular biology of MS progression, we categorized these reported genes based on their cellular functions. This review paves the way of introducing a specific population-based diagnostic panel of genetic markers among the Iranian population for the first time in the world.
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Affiliation(s)
- Meysam Moghbeli
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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16
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Fafińska J, Czech A, Sitz T, Ignatova Z, Hahn U. DNA Aptamers for the Malignant Transformation Marker CD24. Nucleic Acid Ther 2018; 28:326-334. [PMID: 30407110 DOI: 10.1089/nat.2018.0748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Cluster of differentiation 24 (CD24) is a cell surface glycoprotein, which is largely present on hematopoietic cells and many types of solid tumor cells. CD24 is known to be involved in a wide range of downstream signaling pathways and neural development, yet the underlying mechanisms are poorly understood. Moreover, its production correlates with poor cancer prognosis, and targeting of CD24 with different antibodies has been shown to inhibit disease progression. Nucleic acid aptamers are oligonucleotides that are selected from random DNA or RNA libraries for high affinity and specific binding to a certain target. Thus, they can be used as an alternative to antibodies. To gain an insight on CD24 role and its interaction partners, we performed several SELEX (systematic evolution of ligands by exponential enrichment) experiments to select CD24-specfiic DNA aptamers. We found that the cell-SELEX approach was the most useful and that using HT-29 cell line presenting CD24 along with CD24 knockdown HT-29 cells has selected six aptamers. For the selected aptamers, we determined dissociation constants in the nanomolar range (18-709 nM) using flow cytometry. These aptamers can be applied as diagnostic tools to track cancer progression and bear a potential for therapeutic use for inhibiting signaling pathways that promote the metastatic process.
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Affiliation(s)
- Joanna Fafińska
- Hamburg University, MIN Faculty, Chemistry Department, Institute for Biochemistry & Molecular Biology, Hamburg, Germany
| | - Andreas Czech
- Hamburg University, MIN Faculty, Chemistry Department, Institute for Biochemistry & Molecular Biology, Hamburg, Germany
| | - Tobias Sitz
- Hamburg University, MIN Faculty, Chemistry Department, Institute for Biochemistry & Molecular Biology, Hamburg, Germany
| | - Zoya Ignatova
- Hamburg University, MIN Faculty, Chemistry Department, Institute for Biochemistry & Molecular Biology, Hamburg, Germany
| | - Ulrich Hahn
- Hamburg University, MIN Faculty, Chemistry Department, Institute for Biochemistry & Molecular Biology, Hamburg, Germany
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17
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Stott SRW, Hayat S, Carnwath T, Garas S, Sleeman JP, Barker RA. CD24 expression does not affect dopamine neuronal survival in a mouse model of Parkinson's disease. PLoS One 2017; 12:e0171748. [PMID: 28182766 PMCID: PMC5300212 DOI: 10.1371/journal.pone.0171748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/25/2017] [Indexed: 12/26/2022] Open
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative condition that is characterised by the loss of specific populations of neurons in the brain. The mechanisms underlying this selective cell death are unknown but by using laser capture microdissection, the glycoprotein, CD24 has been identified as a potential marker of the populations of cells that are affected in PD. Using in situ hybridization and immunohistochemistry on sections of mouse brain, we confirmed that CD24 is robustly expressed by many of these subsets of cells. To determine if CD24 may have a functional role in PD, we modelled the dopamine cell loss of PD in Cd24 mutant mice using striatal delivery of the neurotoxin 6-OHDA. We found that Cd24 mutant mice have an anatomically normal dopamine system and that this glycoprotein does not modulate the lesion effects of 6-OHDA delivered into the striatum. We then undertook in situ hybridization studies on sections of human brain and found-as in the mouse brain-that CD24 is expressed by many of the subsets of the cells that are vulnerable in PD, but not those of the midbrain dopamine system. Finally, we sought to determine if CD24 is required for the neuroprotective effect of Glial cell-derived neurotrophic factor (GDNF) on the dopaminergic nigrostriatal pathway. Our results indicate that in the absence of CD24, there is a reduction in the protective effects of GDNF on the dopaminergic fibres in the striatum, but no difference in the survival of the cell bodies in the midbrain. While we found no obvious role for CD24 in the normal development and maintenance of the dopaminergic nigrostriatal system in mice, it may have a role in mediating the neuroprotective aspects of GDNF in this system.
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Affiliation(s)
- Simon R. W Stott
- John van Geest Centre for Brain Repair, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, England
- * E-mail:
| | - Shaista Hayat
- John van Geest Centre for Brain Repair, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, England
| | - Tom Carnwath
- John van Geest Centre for Brain Repair, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, England
| | - Shaady Garas
- John van Geest Centre for Brain Repair, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, England
| | - Jonathan P. Sleeman
- Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Roger A. Barker
- John van Geest Centre for Brain Repair, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, England
- Wellcome Trust-MRC Stem Cell Institute, Cambridge, England
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18
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Zheng C, Yin S, Yang Y, Yu Y, Xie X. CD24 aggravates acute liver injury in autoimmune hepatitis by promoting IFN-γ production by CD4 + T cells. Cell Mol Immunol 2017; 15:260-271. [PMID: 28065940 PMCID: PMC5843612 DOI: 10.1038/cmi.2016.57] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 09/23/2016] [Accepted: 09/23/2016] [Indexed: 12/25/2022] Open
Abstract
The T-cell-mediated immune response is implicated in many clinical hepatic injuries, such as autoimmune hepatitis and acute virus hepatitis. CD24 is widely expressed by different immune cells and plays an important role in the pathogenesis of many autoimmune diseases. However, the role of CD24 in T-cell-mediated liver injury has not been elucidated until now. Here we showed that CD24 deficiency protects mice from concanavalin A (ConA)-induced fulminant liver injury by reducing serum interferon-γ (IFN-γ) levels. CD24 expression by hepatic T cells was markedly increased following ConA challenge. Moreover, decreased IFN-γ production by hepatic CD4+ T cells in CD24-deficient mice was detected, which was correlated with downregulated phosphorylation of STAT1 in hepatic tissue. In vitro experiments also supported the conclusion that CD24 deficiency impaired IFN-γ production by CD4+ T cells following ConA, CD3/CD28 and phorbol myristate acetate/ionomycin stimulation. Our study suggests that CD24 deficiency confers hepatoprotection by decreasing CD4+ T-cell-dependent IFN-γ production in vivo, which suggests that CD24 might be a potential target molecule for reducing clinical hepatitis.
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Affiliation(s)
- Chenhong Zheng
- Department of Comprehensive Surgery, Clinical Division of South Building, Chinese PLA General Hospital, Beijing 100853, China
| | - Shulei Yin
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Yang Yang
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Yizhi Yu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Xiaohua Xie
- Department of Comprehensive Surgery, Clinical Division of South Building, Chinese PLA General Hospital, Beijing 100853, China
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19
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The CD24 surface antigen in neural development and disease. Neurobiol Dis 2016; 99:133-144. [PMID: 27993646 DOI: 10.1016/j.nbd.2016.12.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 12/12/2016] [Accepted: 12/15/2016] [Indexed: 12/11/2022] Open
Abstract
A cell's surface molecular signature enables its reciprocal interactions with the associated microenvironments in development, tissue homeostasis and pathological processes. The CD24 surface antigen (heat-stable antigen, nectadrin; small cell lung cancer antigen cluster-4) represents a prime example of a neural surface molecule that has long been known, but whose diverse molecular functions in intercellular communication we have only begun to unravel. Here, we briefly summarize the molecular fundamentals of CD24 structure and provide a comprehensive review of CD24 expression and functional studies in mammalian neural developmental systems and disease models (rodent, human). Striving for an integrated view of the intracellular signaling processes involved, we discuss the most pertinent routes of CD24-mediated signaling pathways and functional networks in neurobiology (neural migration, neurite extension, neurogenesis) and pathology (tumorigenesis, multiple sclerosis).
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20
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Lee J, Smeriglio P, Dragoo J, Maloney WJ, Bhutani N. CD24 enrichment protects while its loss increases susceptibility of juvenile chondrocytes towards inflammation. Arthritis Res Ther 2016; 18:292. [PMID: 27955675 PMCID: PMC5153697 DOI: 10.1186/s13075-016-1183-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 11/14/2016] [Indexed: 11/21/2022] Open
Abstract
Background Diseases associated with human cartilage, including rheumatoid arthritis (RA) and osteoarthritis (OA) have manifested age, mechanical stresses and inflammation as the leading risk factors. Although inflammatory processes are known to be upregulated upon aging, we sought to gain a molecular understanding of how aging affects the tissue-specific response to inflammation. In this report, we explored the role of cluster of differentiation 24 (CD24) in regulating differential inflammatory responses in juvenile and adult human chondrocytes. Methods Differential cell-surface CD24 expression was assessed in juvenile and adult chondrocytes along with human induced pluripotent stem cell (hiPSC)-derived neonatal chondrocytes through gene expression and fluorescence-activated cell sorting (FACS) analyses. Loss of function of CD24 was achieved through silencing in chondrocytes and the effects on the response to inflammatory cues were assessed through gene expression and NFκB activity. Results CD24 expression in chondrocytes caused a differential response to cytokine-induced inflammation, with the CD24high juvenile chondrocytes being resistant to IL-1ß treatment as compared to CD24low adult chondrocytes. CD24 protects from inflammatory response by reducing NFκB activation, as an acute loss of CD24 via silencing led to an increase in NFκB activation. Moreover, the loss of CD24 in chondrocytes subsequently increased inflammatory and catabolic gene expression both in the absence and presence of IL-1ß. Conclusions We have identified CD24 as a novel regulator of inflammatory response in cartilage that is altered during development and aging and could potentially be therapeutic in RA and OA. Electronic supplementary material The online version of this article (doi:10.1186/s13075-016-1183-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jieun Lee
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Piera Smeriglio
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jason Dragoo
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - William J Maloney
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Nidhi Bhutani
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA.
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Fujita N, Suzuki S, Watanabe K, Ishii K, Watanabe R, Shimoda M, Takubo K, Tsuji T, Toyama Y, Miyamoto T, Horiuchi K, Nakamura M, Matsumoto M. Chordoma-derived cell line U-CH1-N recapitulates the biological properties of notochordal nucleus pulposus cells. J Orthop Res 2016; 34:1341-50. [PMID: 27248133 PMCID: PMC5108487 DOI: 10.1002/jor.23320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/25/2016] [Indexed: 02/04/2023]
Abstract
Intervertebral disc degeneration proceeds with age and is one of the major causes of lumbar pain and degenerative lumbar spine diseases. However, studies in the field of intervertebral disc biology have been hampered by the lack of reliable cell lines that can be used for in vitro assays. In this study, we show that a chordoma-derived cell line U-CH1-N cells highly express the nucleus pulposus (NP) marker genes, including T (encodes T brachyury transcription factor), KRT19, and CD24. These observations were further confirmed by immunocytochemistry and flow cytometry. Reporter analyses showed that transcriptional activity of T was enhanced in U-CH1-N cells. Chondrogenic capacity of U-CH1-N cells was verified by evaluating the expression of extracellular matrix (ECM) genes and Alcian blue staining. Of note, we found that proliferation and synthesis of chondrogenic ECM proteins were largely dependent on T in U-CH1-N cells. In accordance, knockdown of the T transcripts suppressed the expression of PCNA, a gene essential for DNA replication, and SOX5 and SOX6, the master regulators of chondrogenesis. On the other hand, the CD24-silenced cells showed no reduction in the mRNA expression level of the chondrogenic ECM genes. These results suggest that U-CH1-N shares important biological properties with notochordal NP cells and that T plays crucial roles in maintaining the notochordal NP cell-like phenotype in this cell line. Taken together, our data indicate that U-CH1-N may serve as a useful tool in studying the biology of intervertebral disc. © 2016 The Authors. Journal of Orthopaedic Research Published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 34:1341-1350, 2016.
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Affiliation(s)
- Nobuyuki Fujita
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Satoshi Suzuki
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Kota Watanabe
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Ken Ishii
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Ryuichi Watanabe
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Masayuki Shimoda
- Departments of PathologyKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Keiyo Takubo
- Department of Stem Cell BiologyResearch Institute, National Center for Global Health and Medicine1‐21‐1 ToyamaShinjuku‐kuTokyo160‐8582Japan
| | - Takashi Tsuji
- Kitasato Institute Hospital5‐9‐1 ShiroganeMinato‐kuTokyo108‐8642Japan
| | - Yoshiaki Toyama
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Takeshi Miyamoto
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Keisuke Horiuchi
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Masaya Nakamura
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
| | - Morio Matsumoto
- Departments of Orthopaedic SurgeryKeio University School of Medicine35 ShinanomachiShinjuku‐kuTokyo160‐8582Japan
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Zhang Y, Li B, Zhang X, Sonpavde GP, Jiao K, Zhang A, Zhang G, Sun M, Chu C, Li F, Wang L, Cui R, Liu R. CD24 is a genetic modifier for risk and progression of prostate cancer. Mol Carcinog 2016; 56:641-650. [PMID: 27377469 DOI: 10.1002/mc.22522] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 06/29/2016] [Accepted: 07/01/2016] [Indexed: 01/15/2023]
Abstract
CD24 plays an oncogenic role in the onset and progression of various human cancers, including prostate cancer. In the present study, we identified two linkage disequilibrium blocks with four recombination hotspot motifs in human CD24 locus. To elucidate whether genetic variants of CD24 are associated with susceptibility to prostate cancer and its disease status, we conducted a case-control association study with two P170 C/T and P-534 A/C polymorphisms of CD24 in 590 patients with prostate cancer and 590 healthy controls. A significant increased risk of prostate cancer was found in men with the P170T/T genotype over the P170C/C genotype (odd ratio = 1.74, 95% confidence interval = 1.16-2.63, P = 0.008), and in men with the P-534C/C genotype over the P-534A/A genotype (odd ratio = 1.47, 95% CI = 1.18-2.26, P = 0.003). Cochran-Armitage trend analysis showed that the P170T allele was significantly correlated with an increased risk of prostate cancer progression (P = 0.029, trend between genotypes and stages) and this observation was also validated in an independent sample cohort. Next, we found that tumors with P170T or P-534C alleles had more twofold increased protein expressions of CD24 as compared to those with P170C or P-534A alleles, respectively. Likewise, tumors with a combination of P170T/T and P-534C/C genotypes were associated with a high mRNA level of CD24. Our data suggest a significant association of CD24 genetic variants with prostate cancer onset and progression, which provides new insight into molecular genetics of prostate cancer; however, these findings need to be validated in multiple independent cohorts. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Yifan Zhang
- Departmentof Thoracic Surgery, The Second Hospital of Jilin University, Changchun, P.R. China.,Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Bingjin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, P.R. China
| | - Xingyi Zhang
- Departmentof Thoracic Surgery, The Second Hospital of Jilin University, Changchun, P.R. China.,Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, P.R. China
| | - Guru P Sonpavde
- Department of Internal Medicine, Section of Medical Oncology, University of Alabama at Birmingham, Birmingham, Alabama.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kenneth Jiao
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Andrea Zhang
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Guangxin Zhang
- Departmentof Thoracic Surgery, The Second Hospital of Jilin University, Changchun, P.R. China.,Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Mei Sun
- Department of Pathology, The Second Hospital of Jilin University, Changchun, P.R. China
| | - Chengjing Chu
- Department of Health and Social Science, Guangdong Medical College, Dongguan, P.R. China
| | - Feng Li
- Anshan Normal University Affiliated Health School, Anshan, P.R. China
| | - Lizhong Wang
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ranji Cui
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, P.R. China
| | - Runhua Liu
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
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23
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Mensah F, Bansal A, Berkovitz S, Sharma A, Reddy V, Leandro MJ, Cambridge G. Extended B cell phenotype in patients with myalgic encephalomyelitis/chronic fatigue syndrome: a cross-sectional study. Clin Exp Immunol 2016; 184:237-47. [PMID: 26646713 DOI: 10.1111/cei.12749] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2015] [Indexed: 12/21/2022] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a heterogeneous condition of unknown aetiology characterized by multiple symptoms including fatigue, post-exertional malaise and cognitive impairment, lasting for at least 6 months. Recently, two clinical trials of B cell depletion therapy with rituximab (anti-CD20) reported convincing improvement in symptoms. A possible but undefined role for B cells has therefore been proposed. Studies of the relative percentages of B cell subsets in patients with ME/CFS have not revealed any reproducible differences from healthy controls (HC). In order to explore whether more subtle alterations in B cell subsets related to B cell differentiation exist in ME/CFS patients we used flow cytometry to immunophenotype CD19⁺ B cells. The panel utilized immunoglobulin (Ig)D, CD27 and CD38 (classical B cell subsets) together with additional markers. A total of 38 patients fulfilling Canadian, Centre for Disease Control and Fukuda ME/CFS criteria and 32 age- and sex-matched HC were included. We found no difference in percentages of classical subsets between ME/CFS patients and HC. However, we observed an increase in frequency (P < 0·01) and expression (MFI; P = 0·03) of CD24 on total B cells, confined to IgD⁺ subsets. Within memory subsets, a higher frequency of CD21⁺ CD38⁻ B cells (> 20%) was associated with the presence of ME/CFS [odds ratio: 3·47 (1·15-10·46); P = 0·03] compared with HC, and there was a negative correlation with disease duration. In conclusion, we identified possible changes in B cell phenotype in patients with ME/CFS. These may reflect altered B cell function and, if confirmed in other patient cohorts, could provide a platform for studies based on clinical course or responsiveness to rituximab therapy.
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Affiliation(s)
- F Mensah
- Department of Rheumatology Research, Division of Medicine, University College of London
| | - A Bansal
- Department of Immunology, Epsom and St Helier University Hospitals NHS Trust
| | - S Berkovitz
- Department of Neurology, Royal London Hospital of Integrated Medicine, London, UK
| | - A Sharma
- Department of Rheumatology Research, Division of Medicine, University College of London
| | - V Reddy
- Department of Rheumatology Research, Division of Medicine, University College of London
| | - M J Leandro
- Department of Rheumatology Research, Division of Medicine, University College of London
| | - G Cambridge
- Department of Rheumatology Research, Division of Medicine, University College of London
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24
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Jia ZF, Wang LZ, Cao XY, Wang C, Cao DH, Wu X, You LL, Jin MS, Wang YP, Zhou BS, Jiang J. CD24 genetic variants contribute to overall survival in patients with gastric cancer. World J Gastroenterol 2016; 22:2373-82. [PMID: 26900300 PMCID: PMC4735012 DOI: 10.3748/wjg.v22.i7.2373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 08/12/2015] [Accepted: 11/30/2015] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the role of single nucleotide polymorphisms (SNPs) in CD24 gene in susceptibility and overall survival of gastric cancer (GC). METHODS We genotyped 3 tagging SNPs of CD24-P-534 in the promoter region, P170 in the coding region of exon 2 and P1527 in the 3' untranslated region - using polymerase chain reaction-restriction fragment length polymorphism in specimens from 679 histologically-confirmed GC cases, 111 gastric atrophy (GA) cases and 976 tumor-free controls. Serum immunoglobulin G antibodies to Helicobacter pylori (H. pylori) of all subjects were detected by enzyme-linked immunosorbent assay. CD24 expression was evaluated by immunohistochemistry in 131 GC specimens. Correlations between SNPs and risk of GC or GA were shown by P values and odd ratios (ORs) with 95% confidence intervals (95%CI) compared with the most common genotype of each SNP using the unconditional logistic regression model after adjusting for age, sex and H. pylori infection. Survival within each SNP group was plotted by Kaplan-Meier method and compared by log-rank test (recessive model). Hazard ratios with 95%CIs were computed by Cox regression model after adjusting for age, sex, histological type, tumor differentiation, clinical stage and post-operational chemotherapy. RESULTS All of the three loci were in Hardy-Weinberg equilibrium in the control group. Median follow-up time for the 600 GC patients included in the survival analysis was 36.2 mo (range, 2.1-66.7 mo; 95%CI: 34.3-36.5 mo). Patients with the P-534 A/A genotype had significantly shorter survival (HR = 1.38, 95%CI: 1.01-1.88, P = 0.042) than did the C/C or C/A genotype carriers after adjusting for age, sex, histological type, tumor differentiation, clinical stage and post-operational chemotherapy. This trend was more evident in patients who lived longer than 2.5 years (HR = 7.55, 95%CI: 2.16-26.32, P = 0.001). The P170 T/T genotype was associated with a shorter lifespan than the non-T/T genotypes, but not significantly so. None of the three genetic variants was found to be associated with risk of GC (including tumor stage, grade and distant metastasis) or with risk of gastric atrophy. Furthermore, no difference of CD24 expression was found among the genotypes. CONCLUSION The P-534 site in CD24 gene affects the overall survival of gastric cancer and may serve as a prognostic marker for gastric cancer.
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25
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Zhang W, Yi B, Wang C, Chen D, Bae S, Wei S, Guo RJ, Lu C, Nguyen LLH, Yang WH, Lillard JW, Zhang X, Wang L, Liu R. Silencing of CD24 Enhances the PRIMA-1-Induced Restoration of Mutant p53 in Prostate Cancer Cells. Clin Cancer Res 2015; 22:2545-54. [PMID: 26712693 DOI: 10.1158/1078-0432.ccr-15-1927] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 12/13/2015] [Indexed: 11/16/2022]
Abstract
PURPOSE In prostate cancer cells, there is CD24-dependent inactivation of mutant p53, but the mechanism and its significance remain largely unknown. Here, we validated this observation and explored the therapeutic potential of targeting CD24 in TP53 mutant prostate cancer cells. EXPERIMENTAL DESIGN Overall, 553 prostate cancers (522 formalin-fixed paraffin-embedded and 31 frozen tissues) were assessed for protein or mRNA expression of CD24 and TP53 The effects of CD24 on p53-dependent transcriptional regulation, cancer cell growth, the cell cycle, apoptosis, and mutant p53 restoration were also determined. RESULTS As determined with three sample cohorts, CD24 and p53 were not expressed in prostate epithelial cells but in prostate cancer cells in 48% of cases for CD24 and 16% of cases for p53 (mutant form). Expressions of CD24 and mutant p53 were more frequently observed in late-stage and metastatic prostate tumors. Mutant p53 accompanied with CD24 was expressed in most cases (91.6%, 76/83). Silencing of CD24 increased the transcriptional activity of p53 target genes, such as CDKNA1, VDR, and TP53INP1, leading to suppression of p53-dependent cell growth, cell-cycle arrest, and apoptosis in most TP53-mutant prostate cancer cells. Silencing of CD24 enhanced restoration of PRIMA-1-induced mutant p53 in endogenous TP53(P223L/V274F) DU145 cells and in PC3 cells transfected with TP53(R273H) CONCLUSIONS: In human prostate cancers, there is CD24-dependent inactivation of mutant p53. The coexpression of CD24 and p53 may help identify aggressive cancers. Targeting CD24 provides a strategy to enhance mutant p53-restoring therapies, especially in patients with TP53(R273H) prostate cancer. Clin Cancer Res; 22(10); 2545-54. ©2015 AACR.
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Affiliation(s)
- Wei Zhang
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama. Institute for the Endemic Fluorosis Control, Chinese Center for Endemic Disease Control, Harbin Medical University, Harbin, P.R. China
| | - Bin Yi
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama. Department of Pediatric Surgery, Tongji Hospital of Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Chao Wang
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama. Department of Integrative Endemic Area, Tongji Hospital of Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Dongquan Chen
- Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama. Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sejong Bae
- Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama. Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Shi Wei
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Rong-Jun Guo
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Changming Lu
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Lisa L H Nguyen
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Wei-Hsiung Yang
- Department of Biomedical Sciences, Mercer University, Savannah, Georgia
| | - James W Lillard
- Department of Microbiology, Biochemistry, and Immunology, Morehouse School of Medicine, Atlanta, Georgia
| | - Xingyi Zhang
- Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, P.R. China.
| | - Lizhong Wang
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama. Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama.
| | - Runhua Liu
- Department of Genetics, University of Alabama at Birmingham, Birmingham, Alabama. Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama.
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26
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Fairbridge NA, Southall TM, Ayre DC, Komatsu Y, Raquet PI, Brown RJ, Randell E, Kovacs CS, Christian SL. Loss of CD24 in Mice Leads to Metabolic Dysfunctions and a Reduction in White Adipocyte Tissue. PLoS One 2015; 10:e0141966. [PMID: 26536476 PMCID: PMC4633231 DOI: 10.1371/journal.pone.0141966] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 10/15/2015] [Indexed: 12/21/2022] Open
Abstract
CD24 is a glycophosphatidylinositol (GPI)-linked cell surface receptor that is involved in regulating the survival or differentiation of several different cell types. CD24 has been used to identify pre-adipocytes that are able to reconstitute white adipose tissue (WAT) in vivo. Moreover, we recently found that the dynamic upregulation of CD24 in vitro during early phases of adipogenesis is necessary for mature adipocyte development. To determine the role of CD24 in adipocyte development in vivo, we evaluated the development of the inguinal and interscapular subcutaneous WAT and the epididymal visceral WAT in mice with a homozygous deletion of CD24 (CD24KO). We observed a significant decrease in WAT mass of 40% to 74% in WAT mass from both visceral and subcutaneous depots in male mice, with no significant effect in female mice, compared to wild-type (WT) sex- and age-matched controls. We also found that CD24KO mice had increased fasting glucose and free fatty acids, decreased fasting insulin, and plasma leptin. No major differences were observed in the sensitivity to insulin or glucose, or in circulating triglycerides, total cholesterol, HDL-cholesterol, or LDL-cholesterol levels between WT and CD24KO mice. Challenging the CD24KO mice with either high sucrose (35%) or high fat (45%) diets that promote increased adiposity, increased WAT mass and fasting insulin, adiponectin and leptin levels, as well as reduced the sensitivity to insulin and glucose, to the levels of WT mice on the same diets. The CD24-mediated reduction in fat pad size was due to a reduction in adipocyte cell size in all depots with no significant reduction pre-adipocyte or adipocyte cell number. Thus, we have clearly demonstrated that the global absence of CD24 affects adipocyte cell size in vivo in a sex- and diet-dependent manner, as well as causing metabolic disturbances in glucose homeostasis and free fatty acid levels.
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Affiliation(s)
- Nicholas A. Fairbridge
- Department of Biochemistry, Faculty of Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Thomas M. Southall
- Department of Biochemistry, Faculty of Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - D. Craig Ayre
- Department of Biochemistry, Faculty of Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Yumiko Komatsu
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Paula I. Raquet
- Department of Biochemistry, Faculty of Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Robert J. Brown
- Department of Biochemistry, Faculty of Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Edward Randell
- Department of Laboratory Medicine, Faculty of Medicine, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Christopher S. Kovacs
- Division of Medicine-Endocrinology, Faculty of Medicine, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Sherri L. Christian
- Department of Biochemistry, Faculty of Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
- * E-mail:
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27
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Kaplan JL, Marshall MA, C McSkimming C, Harmon DB, Garmey JC, Oldham SN, Hallowell P, McNamara CA. Adipocyte progenitor cells initiate monocyte chemoattractant protein-1-mediated macrophage accumulation in visceral adipose tissue. Mol Metab 2015; 4:779-94. [PMID: 26629403 PMCID: PMC4632113 DOI: 10.1016/j.molmet.2015.07.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 07/27/2015] [Accepted: 07/30/2015] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE Macrophages are important producers of obesity-induced MCP-1; however, initial obesity-induced increases in MCP-1 production precede M1 macrophage accumulation in visceral adipose tissue (VAT). The initial cellular source of obesity-induced MCP-1 in vivo is currently unknown. Preliminary reports based on in vitro studies of preadipocyte cell lines and adherent stroma-vascular fraction cells suggest that resident stromal cells express MCP-1. In the past several years, elegant methods of identifying adipocyte progenitor cells (AdPCs) have become available, making it possible to study these cells in vivo. We have previously published that global deletion of transcription factor Inhibitor of Differentiation 3 (Id3) attenuates high fat diet-induced obesity, but it is unclear if Id3 plays a role in diet-induced MCP-1 production. We sought to determine the initial cellular source of MCP-1 and identify molecular regulators mediating MCP-1 production. METHODS Id3 (+/+) and Id3 (-/-) mice were fed either a standard chow or HFD for varying lengths of time. Flow cytometry, semi-quantitative real-time PCR, ELISAs and adoptive transfers were used to assess the importance of AdPCs during diet-induced obesity. Flow cytometry was also performed on a cohort of 14 patients undergoing bariatric surgery. RESULTS Flow cytometry identified committed CD45(-)CD31 (-) Ter119(-)CD29(+)CD34(+)Sca-1(+)CD24(-) adipocyte progenitor cells as producers of high levels of MCP-1 in VAT. High-fat diet increased AdPC numbers, an effect dependent on Id3. Loss of Id3 increased p21(Cip1) levels and attenuated AdPC proliferation, resulting in reduced MCP-1 and M1 macrophage accumulation in VAT, compared to Id3 (+/+) littermate controls. AdPC rescue by adoptive transfer of 50,000 Id3 (+/+) AdPCs into Id3 (-/-) recipient mice increased MCP-1 levels and M1 macrophage number in VAT. Additionally, flow cytometry identified MCP-1-producing CD45(-)CD31(-)CD34(+)CD44(+)CD90(+) AdPCs in human omental and subcutaneous adipose tissue, with a higher percentage in omental adipose. Furthermore, high surface expression of CD44 marked abundant MCP-1 producers, only in visceral adipose tissue. CONCLUSIONS This study provides the first in vivo evidence, to our knowledge, that committed AdPCs in VAT are the initial source of obesity-induced MCP-1 and identifies the helix-loop-helix transcription factor Id3 as a critical regulator of p21(Cip1) expression, AdPC proliferation, MCP-1 expression and M1 macrophage accumulation in VAT. Inhibition of Id3 and AdPC expansion, as well as CD44 expression in human AdPCs, may serve as unique therapeutic targets for the regulation of adipose tissue inflammation.
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Affiliation(s)
- Jennifer L Kaplan
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States ; Department of Pathology, University of Virginia, Charlottesville, VA, United States
| | - Melissa A Marshall
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Chantel C McSkimming
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Daniel B Harmon
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States ; Department of Biochemistry, Molecular Biology, and Genetics, University of Virginia, Charlottesville, VA, United States
| | - James C Garmey
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Stephanie N Oldham
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Peter Hallowell
- Department of Surgery, University of Virginia, Charlottesville, VA, United States
| | - Coleen A McNamara
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States ; Department of Medicine, Division of Cardiovascular Medicine, University of Virginia, Charlottesville, VA, United States ; Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States ; Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, United States
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Baek J, Kang S, Byeon H, Woo Hwang K, Min H. Contribution of CD24 polymorphisms to autoimmune disease: A meta-analysis. Comput Biol Med 2015; 64:268-75. [DOI: 10.1016/j.compbiomed.2015.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/14/2015] [Accepted: 07/15/2015] [Indexed: 01/13/2023]
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29
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Kaplan I, Nabiochtchikov I, Leshno A, Moshkowitz M, Shlomi B, Kleinman S, Dagan Y, Meshiach Y, Galazan L, Arber N, Avivi-Arber L, Kraus S. Association of CD24 and the adenomatous polyposis coli gene polymorphisms with oral lichen planus. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 120:378-85. [PMID: 26187149 DOI: 10.1016/j.oooo.2015.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 05/11/2015] [Accepted: 05/21/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE CD24 and the adenomatous polyposis coli (APC) gene polymorphisms are known to predispose to malignant disease. We aimed to investigate their association with risk and susceptibility of oral lichen planus (OLP) in an Israeli Jewish population. STUDY DESIGN The study included 54 patients, of which 41 were females (75.9%) and 13 males (24.1%); of the 533 controls, 224 were females (42.0%) and 309 males (57.9%). Genotyping was performed. Two APC (I1307 K, E1317 Q) and four CD24 variants--C170 T (rs52812045), TG1527 del (rs3838646), A1626 G (rs1058881), and A1056 G (rs1058818)--were assessed. Frequencies were analyzed using the Chi-square test. Two-sided P < .05 values were considered significant. Odds ratios and 95% confidence intervals were obtained by logistic regression analyses. RESULTS CD24 A1056 G carriers have a significantly lower risk of OLP compared with individuals with the wild-type variant (P = .001). A significantly lower risk was found for heterozygote (P = .008) and homozygote carriers (P = .002). Homozygote CD24 A1626 G carriers had a significant higher risk for OLP compared with nonhomozygote carriers (P = .040). CD24 C170 T, TG1527 del, and APC polymorphisms did not show significant associations with OLP risk. CONCLUSIONS CD24 A1626 G is more frequent in OLP patients, contributes to disease risk, and could play a role in OLP susceptibility. A significant association between CD24 A1056 G and a lower OLP incidence was found, suggesting that it may confer protection against OLP risk and progression.
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Affiliation(s)
- Ilana Kaplan
- Unit of Oral Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilana Nabiochtchikov
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ari Leshno
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Menachem Moshkowitz
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Benjamin Shlomi
- Unit of Oral Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shlomi Kleinman
- Unit of Oral Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Yaniv Dagan
- Unit of Oral Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Yaacob Meshiach
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Lior Galazan
- Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Nadir Arber
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
| | | | - Sarah Kraus
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
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30
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Polymorphisms of the CD24 Gene Are Associated with Risk of Multiple Sclerosis: A Meta-Analysis. Int J Mol Sci 2015; 16:12368-81. [PMID: 26039238 PMCID: PMC4490449 DOI: 10.3390/ijms160612368] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 05/22/2015] [Accepted: 05/27/2015] [Indexed: 11/17/2022] Open
Abstract
CD24 is a cell-surface protein mainly expressed in cells of the immune and central nervous system (CNS), cells that play a critical role in the development of multiple sclerosis (MS). In the current study, we investigated four polymorphisms of the CD24 gene regarding their associations with MS. To this end, univariate and multivariate meta-analysis were applied along with modifications to include data from family-trios so as to increase the robustness of the meta-analysis. We found that the polymorphism 226 C>T (Ala57Val) of the CD24 gene is associated with MS according to the recessive mode of inheritance (odds ratio = 1.75; 95% CI: 1.09, 2.81). Moreover, the 1527–1528 TG>del polymorphism is inversely associated with MS according to the dominant mode of inheritance (odds ratio = 0.57; 95% CI 0.39, 0.83). Conversely, the 1056 A>G and 1626 A>G polymorphisms were not found to be associated with MS. We conclude that the CD24 226 C>T polymorphism increases the risk of MS, while the 1527–1528 TG>del polymorphism seems to have a protective role against MS, suggesting that these two polymorphisms can be used as predictive biomarkers for MS development.
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31
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Huang XL, Xu DH, Wang GP, Zhang S, Yu CG. Associations between CD24 gene polymorphisms and inflammatory bowel disease: A meta-analysis. World J Gastroenterol 2015; 21:6052-6059. [PMID: 26019472 PMCID: PMC4438042 DOI: 10.3748/wjg.v21.i19.6052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/20/2014] [Accepted: 02/12/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the relationships between CD24 gene polymorphisms and the risk of inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn’s disease (CD).
METHODS: The PubMed, Web of Science and Cochrane Library databases were searched (up to May 30, 2014). The search terms “CD24”, “inflammatory bowel disease”, “Crohn’s disease”, “Ulcerative colitis”, “IBD”, “CD” or “UC”; and “polymorphism”, “mutation” or “variant” were used. Association studies were limited to the English language, but no limitations in terms of race, ethnicity or geographic area were employed. Stata SE12 software was used to calculate the pooled odds ratios (ORs) with 95% confidence intervals (CIs). P < 0.05 was considered statistically significant. The information was independently extracted from each eligible study by two investigators. Two common polymorphisms, C170T (rs8734) and TG1527del (rs3838646), in the CD24 gene were assessed.
RESULTS: A total of three case-control studies including 2342 IBD patients and 1965 healthy controls were involved in this meta-analysis. The patients and controls were from Caucasian cohorts. The three articles included in this meta-analysis all conformed to Hardy-Weinberg equilibrium. This meta-analysis revealed that there were no significant associations between the two CD24 polymorphisms and the risk for IBD (all P > 0.05). However, in a disease subgroup analysis, we found that the CD24 C170T polymorphism was associated with an increased risk of UC in a dominant model (OR = 1.79, 95%CI: 1.15-2.77, P = 0.009) and an additive model (OR = 1.87, 95%CI: 1.19-2.93, P = 0.007), but this relationship was not present for CD. The CD24 TG1570del polymorphism was significantly associated with CD in the additive model (OR = 1.24, 95%CI: 1.01-1.52, P = 0.037).
CONCLUSION: Our findings provide evidence that the CD24 C170T polymorphism might contribute to the susceptibility to UC, and the CD24 TG1527del polymorphism might be associated with the risk of CD.
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Predictive Levels of CD24 in Peripheral Blood Leukocytes for the Early Detection of Colorectal Adenomas and Adenocarcinomas. DISEASE MARKERS 2015; 2015:916098. [PMID: 26078485 PMCID: PMC4442284 DOI: 10.1155/2015/916098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/12/2015] [Accepted: 03/29/2015] [Indexed: 01/05/2023]
Abstract
CD24 is expressed in 90% of colorectal adenomas and adenocarcinomas. Colorectal cancer (CRC) can be mostly prevented but average risk population screening by stool testing or colonoscopy faces many hurdles. Blood testing is clinically needed. We aimed to evaluate the utility of CD24 expression in peripheral blood leukocytes (PBLs).
Two independent case studies were conducted in eligible individuals undergoing colonoscopy. Protein extracted from PBLs was subjected to immunoblotting using anti-CD24 monoclonal antibodies. CD24 sensitivity and specificity were determined using receiver operating characteristic (ROC) analysis. Initially, 150 subjects were examined: 63 had CRC, 19 had adenomas, and 68 had normal colonoscopies. The sensitivity and specificity of CD24 for distinguishing CRC from normal subjects were 70.5% (95% CI, 54.8–83.2%) and 83.8% (95% CI, 74.6–92.7%) and for adenomas 84.2% (95% CI, 60.4–96.4%) and 73.5% (95% CI, 61.4–83.5%), respectively. In the second trial (n = 149), a similar specificity but higher sensitivity was achieved: 80.0% (95% CI, 63.1–91.6%) for CRC and 89.2% (95% CI, 74.6–97%) for adenomas. A simple noninvasive blood test evaluating CD24 levels has high sensitivity and specificity for detecting colorectal adenomas and cancer in patients undergoing colonoscopy at an urban medical center. Larger multicenter studies are warranted to establish the potential of this promising test.
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Jiang L, Bai X, Wang Y, Wei M. Association Between CD24-P226-C/T Polymorphism and Multiple Sclerosis: A Meta-Analysis. Immunol Invest 2015; 44:321-30. [DOI: 10.3109/08820139.2014.1003650] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Huang J, Yang Y, Liang Z, Kang M, Kuang Y, Li F. Association between the CD24 Ala57Val polymorphism and risk for multiple sclerosis and systemic lupus erythematosus: a meta-analysis. Sci Rep 2015; 5:9557. [PMID: 25830931 PMCID: PMC5381688 DOI: 10.1038/srep09557] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 03/03/2015] [Indexed: 01/03/2023] Open
Abstract
The cluster of differentiation 24 (CD24) Ala57Val polymorphism has been implicated as a risk factor for multiple sclerosis (MS) and systemic lupus erythematosus (SLE); however, genetic studies have produced controversial results. A meta-analysis was performed on this topic. We used odds ratio (OR) and 95% confidence interval (95% CI) to investigate the strength of association. Eleven studies from nine publications consisting of 2466 cases and 2650 controls were included. The results suggested that the CD24 Val/Val genotypes were associated with an increased risk of MS in all study subjects and Caucasians (OR = 2.28, 95% CI: 1.68–3.10, Pz < 0.001 and OR = 2.30, 95% CI: 1.66–3.20, Pz < 0.001, respectively). Sensitivity analysis showed that no individual study was found to be significantly biasing the pooled results. Although meta-analysis also suggested an association between the CD24 Val/Val genotypes and SLE risk in Caucasians (OR = 1.71, 95% CI: 1.31–2.24, Pz < 0.001), sensitivity analysis demonstrated that the association was not statistically significant after removing a Spanish study. In conclusion, this meta-analysis suggests that the CD24 Ala57Val polymorphism is associated with an increased risk of MS in Caucasians. However, the available evidence is not sufficient to support an association between the CD24 Ala57Val polymorphism and SLE risk.
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Affiliation(s)
- Jian Huang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yaqi Yang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Zibin Liang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Miaomiao Kang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ying Kuang
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Feng Li
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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Sun H, Pan Y, Wu R, Lv J, Chi X, Wang X, Tu Z, Zhong J, Sun B, Liu Y, Jiang J, Niu J. CD24 Ala57Val polymorphism is associated with spontaneous viral clearance in the HCV-infected Chinese population. Liver Int 2015; 35:786-94. [PMID: 25872416 DOI: 10.1111/liv.12506] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 02/13/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND & AIMS Host immune response to hepatitis C virus (HCV) is a vital factor involved in both viral clearance and liver disease pathogenesis. CD24 plays an important role in inflammation and immune response and CD24 polymorphisms are associated with risk and progression of chronic hepatitis B virus infection. Our study evaluated whether CD24 polymorphisms affect HCV clearance. METHODS We genotyped 544 chronic hepatitis C (CHC) patients, 78 spontaneous hepatitis C clearance (SHC) patients and 215 healthy controls for CD24 gene variants at positions -P534, P170, P1527 and IFNL3 rs12979860 by pyrosequencing. In CHC patients, 362 individuals were treated with a recombinant IFN-α2b/ribavirin combination for 48 weeks and were followed up for an additional 24 weeks. Lymphocyte CD24 expression was analysed by flow cytometry. RESULTS We show that P170 CT and CT/TT genotypes were over-represented in the SHC group compared to CHC patients (62.8% vs. 47.2% and 75.6% vs. 60.3%, for respective polymorphisms). In multivariate logistic analysis, P170 (CD24 Ala57Val) polymorphism was an independent predictor of SHC (adjusted OR = 2.11, 95%CI = 1.19-3.73, P = 0.010 for CT genotype; OR = 2.01, 95%CI = 1.15-3.49, P = 0.014 for CT/TT genotype). No significant associations were found between the CD24 polymorphisms and treatment-induced viral clearance in log-rank analysis and Cox regression analysis. Patients with the CT/TT genotype had greater T-cell CD24 expression than patients with the CC genotype. CONCLUSIONS Our findings suggest that CD24 Ala57Val polymorphism and associated variations in CD24 expression may be an important predictor for SHC, but have no effect on antiviral drug treatment response in Chinese CHC patients.
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Affiliation(s)
- Haibo Sun
- Department of Hepatology, The First Hospital, Jilin University, Changchun, China
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CD24: from a Hematopoietic Differentiation Antigen to a Genetic Risk Factor for Multiple Autoimmune Diseases. Clin Rev Allergy Immunol 2015; 50:70-83. [DOI: 10.1007/s12016-015-8470-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Bretz NP, Salnikov AV, Doberstein K, Garbi N, Kloess V, Joumaa S, Naumov I, Boon L, Moldenhauer G, Arber N, Altevogt P. Lack of CD24 expression in mice reduces the number of leukocytes in the colon. Immunol Lett 2014; 161:140-8. [DOI: 10.1016/j.imlet.2014.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 05/30/2014] [Accepted: 06/12/2014] [Indexed: 01/09/2023]
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Thaxton JE, Liu B, Zheng P, Liu Y, Li Z. Deletion of CD24 impairs development of heat shock protein gp96-driven autoimmune disease through expansion of myeloid-derived suppressor cells. THE JOURNAL OF IMMUNOLOGY 2014; 192:5679-86. [PMID: 24808359 DOI: 10.4049/jimmunol.1302755] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
CD24 binds to and suppresses inflammation triggered by danger-associated molecular patterns such as heat shock proteins (HSPs) and high-mobility group box 1. Paradoxically, CD24 has been shown to enhance autoimmune disease. In this study, we attempt to reconcile this paradox by deletion of CD24 (24KO) in a lupus-like disease model driven by forced expression of HSP gp96 at the cell surface (transgenic mice [tm]). As expected, tm24KO mice showed increased CD11c(+) dendritic cell activation coupled to a significant increase in dendritic cell-specific IL-12 production compared with tm mice. However, tm24KO mice showed less CD4 T cell activation and peripheral inflammatory cytokine production in comparison with tm mice. We characterized an enhanced immune suppressive milieu in tm24KO mice distinguished by increased TGF-β and greater regulatory T cell-suppressive capacity. We found greater absolute numbers of myeloid-derived suppressor cells (MDSCs) in tm24KO mice and showed that the Ly6C(+) MDSC subset had greater suppressive capacity from tm24KO mice. Deletion of CD24 in tm mice led to diminished lupus-like pathology as evidenced by anti-nuclear Ab deposition and glomerulonephritis. Finally, we show that expanded MDSC populations were mediated by increased free high-mobility group box 1 in tm24KO mice. Thus, the deletion of CD24 in an HSP-driven model of autoimmunity led to the unexpected development of regulatory T cell and MDSC populations that augmented immune tolerance. Further study of these populations as possible negative regulators of inflammation in the context of autoimmunity is warranted.
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Affiliation(s)
- Jessica E Thaxton
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425; and
| | - Bei Liu
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425; and
| | - Pan Zheng
- Center for Cancer and Immunology Research, Children's National Medical Center, Washington, DC 20010
| | - Yang Liu
- Center for Cancer and Immunology Research, Children's National Medical Center, Washington, DC 20010
| | - Zihai Li
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425; and
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Role of CD24 polymorphisms in the susceptibility to inflammatory bowel disease. Int J Biol Markers 2014; 29:e62-8. [PMID: 24557789 DOI: 10.5301/jbm.5000072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) results from an inappropriate inflammatory response in which genetic, immune, and environmental factors all play important roles. Recently, single nucleotide polymorphisms (SNPs) in the CD24 gene have been associated with the development of several autoimmune diseases. AIM To evaluate whether CD24 SNPs, are associated with risk of ulcerative colitis (UC) and Crohn's disease (CD). METHODS The CD24 polymorphisms C170T (rs8734), TG1527del (rs3838646), A1626G (rs1058881), and A1056G (rs1058818) were assessed in a case-control study of an Israeli cohort comprising 117 IBD patients and 105 age and gender-matched healthy controls. Restriction fragment length polymorphism (RFLP) analysis was performed using BstX1, Bsr1, Mfe1, and BstU1 restriction enzymes. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by logistic regression models. RESULTS Carriers of the C170T SNP were at increased risk of IBD (OR=3.022, 95% CI: 1.748-5.223, p=0.001), UC (OR=3.002, 95% CI: 1.661-5.427, p=0.001) and CD (OR=3.077, 95% CI: 1.334-7.095, p=0.008). Carrying the A1626G and A1056G SNPs was found to be a risk factor for IBD (OR=2.460, 95% CI: 1.420-4.259, p=0.001 and OR=1.856, 95% CI: 1.011-3.405, p=0.01), UC (OR=2.218, 95% CI: 1.207-4.075, p=0.01 and OR=1.944, 95% CI: 0.995-3.798, p=0.01) but not for CD (p=0.086 and p=0.299). The A1626G and TG1527del were found to be associated with younger age of IBD onset (p=0.022 and p=0.027, respectively). CONCLUSIONS The CD24 C170T polymorphism is associated with IBD risk. The A1626G and A1056G SNPs might be associated only with UC risk. These findings suggest CD24 as a new genetic susceptibility factor, with clinical implications in the prediction of IBD prognosis and therapy.
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CD24 gene polymorphism--a novel prognostic factor in esophageal cancer. Int J Biol Markers 2014; 29:e49-54. [PMID: 24474454 DOI: 10.5301/jbm.5000071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND The CD24 gene has been correlated with poor prognosis of various malignancies. The significance of CD24 in esophageal cancer remains unknown. Our aim was to evaluate the association between CD24 genetic polymorphism and esophageal cancer. MATERIALS AND METHODS Between June 2011 and May 2012 patients with esophageal cancer and healthy controls were prospectively enrolled and clinicopathological data were collected. Genomic DNA was extracted and restriction fragment length polymorphism (RFLP) analysis was performed to determine CD24 polymorphism at the coding region of CD24, which results in a substitution of the amino acid Ala by Val. Statistical significance was determined by unpaired t-test, χ²-test, and Fisher's exact test. RESULTS A total of 102 patients were included, of whom 51 had esophageal cancer and the rest comprised a healthy control group. The incidence of the polymorphism variant (Val/Val) among the healthy subjects and the esophageal cancer cohort was 6% in both groups. The incidence of N3 (metastasis in 7 or more regional lymph nodes) was markedly higher in those esophageal cancer patients who carried the polymorphism variant compared with those who did not carry it (66% and 2%, respectively, p=0.007). No significant difference was found between the groups with regard to age, gender, histology type, tumor location, tumor stage, and other histological characteristics of the tumor. CONCLUSIONS This CD24 polymorphism may serve as a novel prognostic marker identifying esophageal cancer patients with poor prognosis. Further studies are warranted to evaluate CD24 function and to validate its predictive potential with regard to esophageal cancer.
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Zhou X. CD24 polymorphisms cannot predict pathologic complete response to anthracycline- and taxane-based neoadjuvant chemotherapy in breast cancer. Clin Breast Cancer 2013; 14:e33-40. [PMID: 24393851 DOI: 10.1016/j.clbc.2013.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 11/08/2013] [Accepted: 11/17/2013] [Indexed: 12/16/2022]
Abstract
INTRODUCTION To evaluate the correlations between CD24 polymorphisms and clinicopathologic variables of patients with breast cancer. PATIENTS AND METHODS Single-nucleotide polymorphisms (SNPs) of CD24 were genotyped by the Sequenom MassArray iPLEX Gold System in 170 patients with breast cancer, and a total of 120 patients with histologically confirmed T2-4N0-2 M0 breast cancer were recruited to therapy with docetaxel, doxorubicin, and cyclophosphamide (TAC) as neoadjuvant chemotherapy. Data were analyzed by the chi-square test and logistic regression analysis. RESULTS There were no significant correlations between CD24 polymorphisms and any of the clinicopathologic variables, and no significant associations were found between either of the polymorphisms and CD24 protein expression. The clinical response rate and the pathologic complete response (pCR) rate were 68.8% and 27.1% in patients with the CD24 rs3838646 CA/CA genotype, and 87.5% and 20.8% in CD24 CA/Del and Del/Del genotype. There were no statistically significant differences between the CA/CA group and the Del allele group. The clinical response rate was 85.4% in patients with the CD24 rs52812045 C/C genotype and 63.9% in patients with the CD24 C/T and T/T genotype. There was a statistically significant difference between the C/C group and the T allele group (odds ratio = 0.28; 95% confidence interval, 0.11-0.73, P = .01). The pCR rate was 29.2% in patients with the CD24 rs52812045 C/C genotype and 23.6% in patients with the CD24 C/T and T/T genotype. There were no statistically significant differences between the C/C group and the T allele group. In a multivariate analysis, there was no correlation between CD24 rs3838646 or rs52812045 genotype and pCR. CONCLUSION CD24 rs3838646 and rs52812045 polymorphism could not predict the pathologic complete response to anthracycline- and taxane-based neoadjuvant chemotherapy in breast cancer. Additional larger studies are required to confirm this finding.
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Affiliation(s)
- Xin Zhou
- Department of Breast Surgery, Chongqing Cancer Institute, People's Republic of China.
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Angiari S, Constantin G. Selectins and their ligands as potential immunotherapeutic targets in neurological diseases. Immunotherapy 2013; 5:1207-20. [DOI: 10.2217/imt.13.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Selectins are a family of adhesion receptors that bind to highly glycosylated molecules expressed on the surface of leukocytes and endothelial cells. The interactions between selectins and their ligands control tethering and rolling of leukocytes on the vascular wall during the process of leukocyte migration into the tissues under physiological and pathological conditions. In recent years, it has been shown that leukocyte recruitment in the CNS plays a pivotal role in diseases such as multiple sclerosis, ischemic stroke, epilepsy and traumatic brain injury. In this review, we discuss the role of selectins in leukocyte–endothelial interactions in the pathogenesis of neurological diseases, highlighting new findings suggesting that selectins and their ligands may represent novel potential therapeutic targets for the treatment of CNS diseases.
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Affiliation(s)
- Stefano Angiari
- Department of Pathology & Diagnostics, Section of General Pathology, University of Verona, Strada le Grazie 8, Verona 37134, Italy
| | - Gabriela Constantin
- Department of Pathology & Diagnostics, Section of General Pathology, University of Verona, Strada le Grazie 8, Verona 37134, Italy
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Chaiworapongsa T, Romero R, Whitten A, Tarca AL, Bhatti G, Draghici S, Chaemsaithong P, Miranda J, Kim CJ, Hassan SS. Differences and similarities in the transcriptional profile of peripheral whole blood in early and late-onset preeclampsia: insights into the molecular basis of the phenotype of preeclampsiaa. J Perinat Med 2013; 41:485-504. [PMID: 23793063 PMCID: PMC4164302 DOI: 10.1515/jpm-2013-0082] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 05/15/2013] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Preeclampsia (PE) can be sub-divided into early- and late-onset phenotypes. The pathogenesis of these two phenotypes has not been elucidated. To gain insight into the mechanisms of disease, the transcriptional profiles of whole blood from women with early- and late-onset PE were examined. METHODS A cross-sectional study was conducted to include women with: i) early-onset PE (diagnosed prior to 34 weeks, n=25); ii) late-onset PE (after 34 weeks, n=47); and iii) uncomplicated pregnancy (n=61). Microarray analysis of mRNA expression in peripheral whole blood was undertaken using Affymetrix microarrays. Differential gene expression was evaluated using a moderated t-test (false discovery rate <0.1 and fold change >1.5), adjusting for maternal white blood cell count and gestational age. Validation by real-time qRT-PCR was performed in a larger sample size [early PE (n=31), late PE (n=72) and controls (n=99)] in all differentially expressed genes. Gene ontology analysis and pathway analysis were performed. RESULTS i) 43 and 28 genes were differentially expressed in early- and late-onset PE compared to the control group, respectively; ii) qRT-PCR confirmed the microarray results for early and late-onset PE in 77% (33/43) and 71% (20/28) of genes, respectively; iii) 20 genes that are involved in coagulation (SERPINI2), immune regulation (VSIG4, CD24), developmental process (H19) and inflammation (S100A10) were differentially expressed in early-onset PE alone. In contrast, only seven genes that encoded proteins involved in innate immunity (LTF, ELANE) and cell-to-cell recognition in the nervous system (CNTNAP3) were differentially expressed in late-onset PE alone. Thirteen genes that encode proteins involved in host defense (DEFA4, BPI, CTSG, LCN2), tight junctions in blood-brain barrier (EMP1) and liver regeneration (ECT2) were differentially expressed in both early- and late-onset PE. CONCLUSION Early- and late-onset PE are characterized by a common signature in the transcriptional profile of whole blood. A small set of genes were differentially regulated in early- and late-onset PE. Future studies of the biological function, expression timetable and protein expression of these genes may provide insight into the pathophysiology of PE.
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Affiliation(s)
| | - Roberto Romero
- Perinatology Research Branch, NICHD, NIH, DHHS, Detroit, MI, and Bethesda, Maryland, USA
| | - Amy Whitten
- Perinatology Research Branch, NICHD, NIH, DHHS, Detroit, MI, and Bethesda, Maryland, USA,Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
| | - Adi L Tarca
- Perinatology Research Branch, NICHD, NIH, DHHS, Detroit, MI, and Bethesda, Maryland, USA,Department of Computer Science, Wayne State University, Detroit, MI, USA
| | - Gaurav Bhatti
- Department of Computer Science, Wayne State University, Detroit, MI, USA
| | - Sorin Draghici
- Department of Computer Science, Wayne State University, Detroit, MI, USA
| | - Piya Chaemsaithong
- Perinatology Research Branch, NICHD, NIH, DHHS, Detroit, MI, and Bethesda, Maryland, USA,Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
| | - Jezid Miranda
- Perinatology Research Branch, NICHD, NIH, DHHS, Detroit, MI, and Bethesda, Maryland, USA,Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
| | - Chong Jai Kim
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Sonia S Hassan
- Perinatology Research Branch, NICHD, NIH, DHHS, Detroit, MI, and Bethesda, Maryland, USA,Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
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Inoue N, Watanabe M, Hayashi F, Hidaka Y, Iwatani Y. The association between a functional polymorphism in theCD24gene and the development of autoimmune thyroid diseases. ACTA ACUST UNITED AC 2013; 81:161-3. [DOI: 10.1111/tan.12070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- N. Inoue
- Department of Biomedical Informatics, Division of Health Sciences; Osaka University Graduate School of Medicine; Osaka; Japan
| | - M. Watanabe
- Department of Biomedical Informatics, Division of Health Sciences; Osaka University Graduate School of Medicine; Osaka; Japan
| | - F. Hayashi
- Department of Biomedical Informatics, Division of Health Sciences; Osaka University Graduate School of Medicine; Osaka; Japan
| | - Y. Hidaka
- Department of Laboratory Medicine; Osaka University Graduate School of Medicine; Osaka; Japan
| | - Y. Iwatani
- Department of Biomedical Informatics, Division of Health Sciences; Osaka University Graduate School of Medicine; Osaka; Japan
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Buck K, Hug S, Seibold P, Ferschke I, Altevogt P, Sohn C, Schneeweiss A, Burwinkel B, Jäger D, Flesch-Janys D, Chang-Claude J, Marmé F. CD24 polymorphisms in breast cancer: impact on prognosis and risk. Breast Cancer Res Treat 2013; 137:927-37. [PMID: 23314606 DOI: 10.1007/s10549-012-2325-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 10/26/2012] [Indexed: 12/22/2022]
Abstract
Overexpression of CD24 has a negative impact on breast cancer prognosis. We have recently reported that the CD24 codon 57 Val/Val genotype (rs52812045) is associated with pathologic complete response after neoadjuvant chemotherapy for primary breast cancer and correlates with intratumoral lymphocyte infiltrates. This study was performed to investigate the influence of CD24 polymorphisms on breast cancer prognosis and risk. A total of 2,514 patients and 4,858 controls recruited as part of the MARIE study, a population-based case-control study, were genotyped for two CD24 polymorphisms (rs52812045, rs3838646) using TaqMan custom genotyping assays. Associations with overall and breast cancer-specific survival were assessed using uni- and multivariable Cox regression models stratified by age at diagnosis and adjusted for prognostic factors. Conditional logistic regression analysis adjusted for major risk factors was used to estimate multivariable odds ratios for risk of putative allele carriers compared to wildtype carriers. CD24 Ala/Val was significantly associated with breast cancer prognosis [Val/Val hazard ratio (HR)(adjusted) = 1.52; 95 % confidence interval (CI): 1.00-2.30, p = 0.05 and HR(adjusted) = 1.83; 95 % CI: 1.10-3.05, p = 0.018 for all-cause and breast cancer-specific mortality, respectively). The association was significant only in patients with a BMI <25 and in those who received adjuvant chemotherapy. None of the CD24 alleles was associated with breast cancer risk. These results provide further evidence of the CD24 Val/Val genotype influencing outcome in primary breast cancer. Together with previous data of CD24 overexpression as a poor prognostic marker, the findings underline the biological importance of CD24 for breast cancer.
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Affiliation(s)
- Katharina Buck
- Division of Preventive Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 460, Heidelberg, Germany
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Increased expression of CD24 in nonmelanoma skin cancer. Int J Biol Markers 2012; 27:e331-6. [PMID: 23250778 DOI: 10.5301/jbm.2012.9935] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2012] [Indexed: 11/20/2022]
Abstract
BACKGROUND Skin cancer detection is based on the macroscopic and microscopic appearance of the lesions and the experience of the surgeon. The final diagnosis is done by pathological analysis, based on established criteria. Currently, there is no serum marker that can be used for the diagnosis of skin cancer. CD24, a mucin-like glycoprotein, is overexpressed in a variety of cancers including skin malignancies. OBJECTIVE Evaluate the potential utility of CD24 expression in peripheral blood leukocytes (PBLs) for the detection of nonmelanoma skin cancers (NMSC). METHODS Twenty-nine consented individuals attending Tel Aviv Sourasky Medical Center for excision of suspected skin lesions, and 21 age- and gender-matched subjects were prospectively recruited. The resected lesions were examined by an expert dermatopathologist. PBLs were isolated from blood samples and protein extracts were subjected to sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and immunoblotting. The study was double blinded. RESULTS CD24 expression in PBLs distinguishes between NMSC and healthy subjects, with high sensitivity (81%) and specificity (67%) for basal cell carcinoma, and 100% and 71%, respectively, for squamous cell carcinoma. CONCLUSION The CD24 test can successfully distinguish NMSC from healthy subjects. CD24 may serve as a new potential and promising diagnostic biomarker for the detection and surveillance of NMSC.
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Wang L, Liu R, Li D, Lin S, Fang X, Backer G, Kain M, Rammoham K, Zheng P, Liu Y. A hypermorphic SP1-binding CD24 variant associates with risk and progression of multiple sclerosis. Am J Transl Res 2012; 4:347-56. [PMID: 22937211 PMCID: PMC3426393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 07/27/2012] [Indexed: 06/01/2023]
Abstract
A large number of risk alleles have been identified for multiple sclerosis (MS). However, how genetic variations may affect pathogenesis remains largely unknown for most risk alleles. Through direct sequencing of CD24 promoter region, we identified a cluster of 7 new single nucleotide polymorphisms in the CD24 promoter. A hypermorphic haplotype consisting of 3 SNPs was identified through association studies consisting of 935 control and 764 MS patients (P=0.001, odds ratio 1.3). The variant is also associated with more rapid progression of MS (P=0.016, log rank test). In cells that are heterozygous for the risk allele, chromatin immunoprecipitation revealed that risk allele specifically bind to a transcription factor SP1, which is selectively required for the hypermorphic promoter activity of the variant. In MS patients, the CD24 transcript levels associate with the SP1-binding variant in a dose-dependent manner (P=7x10(-4)). Our data revealed a potential role for SP1-mediated transcriptional regulation in MS pathogenesis.
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Affiliation(s)
- Lizhong Wang
- Divisions of Immunotherapy and Molecular and Medical Genetics, Departments of Surgery, Pathology and Internal Medicine, University of Michigan School of MedicineAnn Arbor, Michigan, USA
| | - Runhua Liu
- Divisions of Immunotherapy and Molecular and Medical Genetics, Departments of Surgery, Pathology and Internal Medicine, University of Michigan School of MedicineAnn Arbor, Michigan, USA
| | - Dongling Li
- Institute of Biophysics, Chinese Academy of ScienceBeijing, China
| | - Shili Lin
- Department of Statistics, the Ohio State UniversityColumbus, Ohio, USA
| | - Xianfeng Fang
- Institute of Biophysics, Chinese Academy of ScienceBeijing, China
| | - Grant Backer
- Divisions of Immunotherapy and Molecular and Medical Genetics, Departments of Surgery, Pathology and Internal Medicine, University of Michigan School of MedicineAnn Arbor, Michigan, USA
| | - Mandy Kain
- Divisions of Immunotherapy and Molecular and Medical Genetics, Departments of Surgery, Pathology and Internal Medicine, University of Michigan School of MedicineAnn Arbor, Michigan, USA
| | - Kottil Rammoham
- Department of Neurology, the Ohio State UniversityColumbus, Ohio, USA
| | - Pan Zheng
- Divisions of Immunotherapy and Molecular and Medical Genetics, Departments of Surgery, Pathology and Internal Medicine, University of Michigan School of MedicineAnn Arbor, Michigan, USA
| | - Yang Liu
- Divisions of Immunotherapy and Molecular and Medical Genetics, Departments of Surgery, Pathology and Internal Medicine, University of Michigan School of MedicineAnn Arbor, Michigan, USA
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Zhang X, Liu JQ, Shi Y, Reid HH, Boyd RL, Khattabi M, El-Omrani HY, Zheng P, Liu Y, Bai XF. CD24 on thymic APCs regulates negative selection of myelin antigen-specific T lymphocytes. Eur J Immunol 2012; 42:924-35. [PMID: 22213356 PMCID: PMC3359065 DOI: 10.1002/eji.201142024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 11/18/2011] [Accepted: 12/02/2011] [Indexed: 01/18/2023]
Abstract
Negative selection plays a key role in the clonal deletion of autoreactive T cells in the thymus. However, negative selection is incomplete; as high numbers of autoreactive T cells can be detected in normal individuals, mechanisms that regulate negative selection must exist. In this regard, we previously reported that CD24, a GPI-anchored glycoprotein, is required for thymic generation of autoreactive T lymphocytes. The CD24-deficient 2D2 TCR transgenic mice (2D2(+) CD24(-/-) ), whose TCR recognizes myelin oligodendrocyte glycoprotein (MOG), fail to generate functional 2D2 T cells. However, it was unclear if CD24 regulated negative selection, and if so, what cellular mechanisms were involved. Here, we show that elimination of MOG or Aire gene expression in 2D2(+) CD24(-/-) mice - through the creation of 2D2(+) CD24(-/-) MOG(-/-) or 2D2(+) CD24(/) ∼Aire(-/-) mice - completely restores thymic cellularity and function of 2D2 T cells. Restoration of CD24 expression on DCs, but not on thymocytes also partially restores 2D2 T-cell generation in 2D2(+) CD24(-/-) mice. Taken together, we propose that CD24 expression on thymic antigen-presenting cells (mTECs, DCs) down-regulates autoantigen-mediated clonal deletion of autoreactive thymocytes.
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Affiliation(s)
- Xuejun Zhang
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical Center, Columbus, OH, USA
- Department of Immunology, Basic Medical College, Tianjin Medical University, Tianjin, China
| | - Jin-Qing Liu
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical Center, Columbus, OH, USA
| | - Yun Shi
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hugh H. Reid
- The Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Richard L. Boyd
- Monash Immunology and Stem Cell Laboratories, Monash University, Victoria, Australia
| | - Mazin Khattabi
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical Center, Columbus, OH, USA
| | - Hani Y. El-Omrani
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical Center, Columbus, OH, USA
| | - Pan Zheng
- Department of Surgery and Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI
| | - Yang Liu
- Department of Surgery and Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI
| | - Xue-Feng Bai
- Department of Pathology and Comprehensive Cancer Center, The Ohio State University Medical Center, Columbus, OH, USA
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Lopez-Valenzuela M, Ramírez O, Rosas A, García-Vargas S, de la Rasilla M, Lalueza-Fox C, Espinosa-Parrilla Y. An ancestral miR-1304 allele present in Neanderthals regulates genes involved in enamel formation and could explain dental differences with modern humans. Mol Biol Evol 2012; 29:1797-806. [PMID: 22319171 DOI: 10.1093/molbev/mss023] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Genetic changes in regulatory elements are likely to result in phenotypic effects that might explain population-specific as well as species-specific traits. MicroRNAs (miRNAs) are posttranscriptional repressors involved in the control of almost every biological process. These small noncoding RNAs are present in various phylogenetic groups, and a large number of them remain highly conserved at the sequence level. MicroRNA-mediated regulation depends on perfect matching between the seven nucleotides of its seed region and the target sequence usually located at the 3' untranslated region of the regulated gene. Hence, even single changes in seed regions are predicted to be deleterious as they may affect miRNA target specificity. In accordance to this, purifying selection has strongly acted on these regions. Comparison between the genomes of present-day humans from various populations, Neanderthal, and other nonhuman primates showed an miRNA, miR-1304, that carries a polymorphism on its seed region. The ancestral allele is found in Neanderthal, nonhuman primates, at low frequency (~5%) in modern Asian populations and rarely in Africans. Using miRNA target site prediction algorithms, we found that the derived allele increases the number of putative target genes for the derived miRNA more than ten-fold, indicating an important functional evolution for miR-1304. Analysis of the predicted targets for derived miR-1304 indicates an association with behavior and nervous system development and function. Two of the predicted target genes for the ancestral miR-1304 allele are important genes for teeth formation, enamelin, and amelotin. MicroRNA overexpression experiments using a luciferase-based assay showed that the ancestral version of miR-1304 reduces the enamelin- and amelotin-associated reporter gene expression by 50%, whereas the derived miR-1304 does not have any effect. Deletion of the corresponding target sites for miR-1304 in these dental genes avoided their repression, which further supports their regulation by the ancestral miR-1304. Morphological studies described several differences in the dentition of Neanderthals and present-day humans like slower dentition timing and thicker enamel for present-day humans. The observed miR-1304-mediated regulation of enamelin and amelotin could at least partially underlie these differences between the two Homo species as well as other still-unraveled phenotypic differences among modern human populations.
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Affiliation(s)
- Maria Lopez-Valenzuela
- Institut de Biologia Evolutiva, Universitat Pompeu Fabra-Consejo Superior de Investigaciones Científicas, Barcelona, Catalonia, Spain
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Saadatnia M, Najafi MR, Najafi F, Davoudi V, Keyhanian K, Maghzi AH. CD24 gene allele variation is not associated with oligoclonal IgG bands and IgG index of multiple sclerosis patients. Neuroimmunomodulation 2012; 19:195-9. [PMID: 22262195 DOI: 10.1159/000332011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 08/17/2011] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Multiple sclerosis (MS) shows evidence of many distinctive aspects of an autoimmune disorder, including a polygenic inheritance. A recent candidate gene for susceptibility to MS is CD24, which has also been shown to be associated with disease progression. This study was designed to examine whether there is a relationship between the CD24 genotype, oligoclonal band (OCB) status and IgG index in the cerebrospinal fluid (CSF) of MS patients. METHODS A total of 27 definite MS patients were enrolled in this cross-sectional study. Blood samples were collected from a peripheral vein, and CSF was obtained by lumbar puncture. The CD24 gene was sequenced in the blood specimen, and albumin and IgG concentrations were measured in both CSF and serum. We compared both IgG index and OCB status in patients with and without CD24V/V. The correlation between MS severity score (MSSS), OCB status, CD24 genotype and IgG index was studied. RESULTS Only 15 patients were OCB positive. Among patients with negative OCBs, only 2 patients had the V/V genotype. Furthermore, in those with the V/V genotype, IgG index was not significantly elevated (p = 0.322). Patients with the V/V genotype had a significantly higher MSSS (p = 0. 04), but neither the presence of OCBs nor the IgG index showed significant correlation with MSSS (p = 0.379 and 0.20, respectively). CONCLUSION We could not show any relationship between the CD24V/V genotype, OCB status and IgG index. This could be interpreted as indicating that the CD24V/V allele exerts its effects on the disease course independently of CSF IgG synthesis.
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Affiliation(s)
- Mohammad Saadatnia
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
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