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von Ehr J, Oberstrass L, Yazgan E, Schnaubelt LI, Blümel N, McNicoll F, Weigand JE, Zarnack K, Müller-McNicoll M, Korn SM, Schlundt A. Arid5a uses disordered extensions of its core ARID domain for distinct DNA- and RNA-recognition and gene regulation. J Biol Chem 2024; 300:107457. [PMID: 38866324 PMCID: PMC11262183 DOI: 10.1016/j.jbc.2024.107457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/23/2024] [Accepted: 06/01/2024] [Indexed: 06/14/2024] Open
Abstract
AT-rich interacting domain (ARID)-containing proteins, Arids, are a heterogeneous DNA-binding protein family involved in transcription regulation and chromatin processing. For the member Arid5a, no exact DNA-binding preference has been experimentally defined so far. Additionally, the protein binds to mRNA motifs for transcript stabilization, supposedly through the DNA-binding ARID domain. To date, however, no unbiased RNA motif definition and clear dissection of nucleic acid-binding through the ARID domain have been undertaken. Using NMR-centered biochemistry, we here define the Arid5a DNA preference. Further, high-throughput in vitro binding reveals a consensus RNA-binding motif engaged by the core ARID domain. Finally, transcriptome-wide binding (iCLIP2) reveals that Arid5a has a weak preference for (A)U-rich regions in pre-mRNA transcripts of factors related to RNA processing. We find that the intrinsically disordered regions flanking the ARID domain modulate the specificity and affinity of DNA binding, while they appear crucial for RNA interactions. Ultimately, our data suggest that Arid5a uses its extended ARID domain for bifunctional gene regulation and that the involvement of IDR extensions is a more general feature of Arids in interacting with different nucleic acids at the chromatin-mRNA interface.
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Affiliation(s)
- Julian von Ehr
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Frankfurt, Germany; IMPRS on Cellular Biophysics, Frankfurt, Germany
| | - Lasse Oberstrass
- University of Marburg, Department of Pharmacy, Institute of Pharmaceutical Chemistry, Marburg, Germany
| | - Ege Yazgan
- Institute for Molecular Biosciences, Goethe University Frankfurt, Frankfurt, Germany; Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Lara Ina Schnaubelt
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Frankfurt, Germany
| | - Nicole Blümel
- Institute for Molecular Biosciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Francois McNicoll
- Institute for Molecular Biosciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Julia E Weigand
- University of Marburg, Department of Pharmacy, Institute of Pharmaceutical Chemistry, Marburg, Germany
| | - Kathi Zarnack
- Institute for Molecular Biosciences, Goethe University Frankfurt, Frankfurt, Germany; Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Michaela Müller-McNicoll
- Institute for Molecular Biosciences, Goethe University Frankfurt, Frankfurt, Germany; Max-Planck Institute for Biophysics, Frankfurt, Germany
| | - Sophie Marianne Korn
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Frankfurt, Germany; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York, USA.
| | - Andreas Schlundt
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Frankfurt, Germany; University of Greifswald, Institute of Biochemistry, Greifswald, Germany.
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Nishi T, Kaneko I, Iwanaga S, Yuda M. PbARID-associated chromatin remodeling events are essential for gametocyte development in Plasmodium. Nucleic Acids Res 2024; 52:5624-5642. [PMID: 38554111 PMCID: PMC11162789 DOI: 10.1093/nar/gkae207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 03/04/2024] [Accepted: 03/12/2024] [Indexed: 04/01/2024] Open
Abstract
Gametocyte development of the Plasmodium parasite is a key step for transmission of the parasite. Male and female gametocytes are produced from a subpopulation of asexual blood-stage parasites, but the mechanisms that regulate the differentiation of sexual stages are still under investigation. In this study, we investigated the role of PbARID, a putative subunit of a SWI/SNF chromatin remodeling complex, in transcriptional regulation during the gametocyte development of P. berghei. PbARID expression starts in early gametocytes before the manifestation of male and female-specific features, and disruption of its gene results in the complete loss of gametocytes with detectable male features and the production of abnormal female gametocytes. ChIP-seq analysis of PbARID showed that it forms a complex with gSNF2, an ATPase subunit of the SWI/SNF chromatin remodeling complex, associating with the male cis-regulatory element, TGTCT. Further ChIP-seq of PbARID in gsnf2-knockout parasites revealed an association of PbARID with another cis-regulatory element, TGCACA. RIME and DNA-binding assays suggested that HDP1 is the transcription factor that recruits PbARID to the TGCACA motif. Our results indicated that PbARID could function in two chromatin remodeling events and paly essential roles in both male and female gametocyte development.
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Affiliation(s)
- Tsubasa Nishi
- Department of Medicine, Mie University, Tsu 514-8507, Japan
| | - Izumi Kaneko
- Department of Medicine, Mie University, Tsu 514-8507, Japan
| | - Shiroh Iwanaga
- Research Institute for Microbial Diseases, Osaka University, Suita 565-0871, Japan
| | - Masao Yuda
- Department of Medicine, Mie University, Tsu 514-8507, Japan
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Yoodee S, Peerapen P, Plumworasawat S, Malaitad T, Thongboonkerd V. Identification and characterization of ARID1A-interacting proteins in renal tubular cells and their molecular regulation of angiogenesis. J Transl Med 2023; 21:862. [PMID: 38017409 PMCID: PMC10683333 DOI: 10.1186/s12967-023-04750-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 11/21/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Defects and deficiency of AT-rich interactive domain-containing protein 1A (ARID1A) encoded by a tumor suppressor gene ARID1A have recently been suggested to get involved in angiogenesis, a crucial process in carcinogenesis. However, molecular mechanisms of ARID1A deficiency to induce angiogenesis in kidney cancer remain underinvestigated. METHODS We performed large-scale identification of ARID1A protein interactors in renal tubular epithelial cells (RTECs) using immunoprecipitation (IP) followed by nanoLC-ESI-LTQ-Orbitrap tandem mass spectrometry (MS/MS). Their roles in angiogenesis were investigated using various assays. RESULTS A total of 74 ARID1A-interacting proteins were identified. Protein-protein interactions analysis revealed that these identified proteins interacted directly or indirectly with ARID1A. Among them, the direct interaction between ARID1A and β-actin was validated by IP and reciprocal IP followed by Western blotting. Small interfering RNA (siRNA) was used for single and double knockdowns of ARID1A and ACTB. Semi-quantitative RT-PCR demonstrated that deficiency of ARID1A, but not ACTB, significantly affected expression of angiogenesis-related genes in RTECs (VEGF and FGF2 were increased, whereas PDGF and EGF were decreased). However, the knockdowns did not affect TGFB1 and FGF1 levels. The quantitative mRNA expression data of VEGF and TGFB1 were consistent with the secreted levels of their protein products as measured by ELISA. Only secreted products derived from ARID1A-deficient RTECs significantly increased endothelial cells (ECs) migration and tube formation. Some of the other carcinogenic features could also be confirmed in the ARID1A-deficient RTECs, including increased cell migration and chemoresistance. Double knockdowns of both ARID1A and ACTB did not enhance the effects of single ARID1A knockdown in all assays. CONCLUSIONS We report herein a large dataset of the ARID1A-interacting proteins in RTECs using an IP-MS/MS approach and confirm the direct interaction between ARID1A and β-actin. However, the role of ARID1A deficiency in angiogenesis is independent of β-actin.
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Affiliation(s)
- Sunisa Yoodee
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, 6thFloor - SiMR Building, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand
| | - Paleerath Peerapen
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, 6thFloor - SiMR Building, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand
| | - Sirikanya Plumworasawat
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, 6thFloor - SiMR Building, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand
| | - Thanyalak Malaitad
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, 6thFloor - SiMR Building, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, 6thFloor - SiMR Building, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand.
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Guo CC, Xu HE, Ma X. ARID3a from the ARID family: structure, role in autoimmune diseases and drug discovery. Acta Pharmacol Sin 2023; 44:2139-2150. [PMID: 37488425 PMCID: PMC10618457 DOI: 10.1038/s41401-023-01134-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/09/2023] [Indexed: 07/26/2023] Open
Abstract
The AT-rich interaction domain (ARID) family of DNA-binding proteins is a group of transcription factors and chromatin regulators with a highly conserved ARID domain that recognizes specific AT-rich DNA sequences. Dysfunction of ARID family members has been implicated in various human diseases including cancers and intellectual disability. Among them, ARID3a has gained increasing attention due to its potential involvement in autoimmunity. In this article we provide an overview of the ARID family, focusing on the structure and biological functions of ARID3a. It explores the role of ARID3a in autoreactive B cells and its contribution to autoimmune diseases such as systemic lupus erythematosus and primary biliary cholangitis. Furthermore, we also discuss the potential for drug discovery targeting ARID3a and present a plan for future research in this field.
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Affiliation(s)
- Cheng-Cen Guo
- Department of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China.
| | - H Eric Xu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
| | - Xiong Ma
- Department of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China.
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Chalise JP, Ehsani A, Lemecha M, Hung YW, Zhang G, Larson GP, Itakura K. ARID5B regulates fatty acid metabolism and proliferation at the Pre-B cell stage during B cell development. Front Immunol 2023; 14:1170475. [PMID: 37483604 PMCID: PMC10360657 DOI: 10.3389/fimmu.2023.1170475] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/15/2023] [Indexed: 07/25/2023] Open
Abstract
During B cell development in bone marrow, large precursor B cells (large Pre-B cells) proliferate rapidly, exit the cell cycle, and differentiate into non-proliferative (quiescent) small Pre-B cells. Dysregulation of this process may result in the failure to produce functional B cells and pose a risk of leukemic transformation. Here, we report that AT rich interacting domain 5B (ARID5B), a B cell acute lymphoblastic leukemia (B-ALL) risk gene, regulates B cell development at the Pre-B stage. In both mice and humans, we observed a significant upregulation of ARID5B expression that initiates at the Pre-B stage and is maintained throughout later stages of B cell development. In mice, deletion of Arid5b in vivo and ex vivo exhibited a significant reduction in the proportion of immature B cells but an increase in large and small Pre-B cells. Arid5b inhibition ex vivo also led to an increase in proliferation of both Pre-B cell populations. Metabolic studies in mouse and human bone marrow revealed that fatty acid uptake peaked in proliferative B cells then decreased during non-proliferative stages. We showed that Arid5b ablation enhanced fatty acid uptake and oxidation in Pre-B cells. Furthermore, decreased ARID5B expression was observed in tumor cells from B-ALL patients when compared to B cells from non-leukemic individuals. In B-ALL patients, ARID5B expression below the median was associated with decreased survival particularly in subtypes originating from Pre-B cells. Collectively, our data indicated that Arid5b regulates fatty acid metabolism and proliferation of Pre-B cells in mice, and reduced expression of ARID5B in humans is a risk factor for B cell leukemia.
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Affiliation(s)
- Jaya Prakash Chalise
- Center for RNA Biology and Therapeutics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Ali Ehsani
- Center for RNA Biology and Therapeutics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Mengistu Lemecha
- Center for RNA Biology and Therapeutics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Yu-Wen Hung
- Immunology and Theranostics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Guoxiang Zhang
- Center for RNA Biology and Therapeutics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Garrett P. Larson
- Center for RNA Biology and Therapeutics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Keiichi Itakura
- Center for RNA Biology and Therapeutics, Beckman Research Institute, City of Hope, Duarte, CA, United States
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von Ehr J, Korn SM, Weiß L, Schlundt A. 1H, 13C, 15N backbone chemical shift assignments of the extended ARID domain in human AT-rich interactive domain protein 5a (Arid5a). BIOMOLECULAR NMR ASSIGNMENTS 2023:10.1007/s12104-023-10130-w. [PMID: 37129704 DOI: 10.1007/s12104-023-10130-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/22/2023] [Indexed: 05/03/2023]
Abstract
The family of AT-rich interactive domain (ARID) containing proteins -Arids- contains 15 members that have almost exclusively been described as DNA-binding proteins. Interestingly, a decade ago the family member Arid5a was found to bind and stabilize mRNAs of immune system key players and thereby account for driving inflammatory and autoimmune diseases. How exactly binding to DNA and RNA is coordinated by the Arid5a ARID domain remains unknown, mainly due to the lack of atom-resolved information on nucleic acid-binding. This in particular applies to the protein's ARID domain, despite the comfortable size of its core unit for NMR-based investigations. Furthermore, the core domain of ARID domains is found to be extended by functionally relevant, often flexible stretches, but whether such elongations are present and crucial for the versatile Arid5a functions is unknown. We here provide a near-complete NMR backbone resonance assignment of the Arid5a ARID domain with N- and C-terminal extensions, which serves as a basis for further studies of its nucleic acid-binding preferences and targeted inhibition by means of NMR. Our data thus significantly contribute to unravelling mechanisms of Arid5a-mediated gene regulation and diseases.
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Affiliation(s)
- Julian von Ehr
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ) of Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438, Frankfurt am Main, Germany
- IMPRS on Cellular Biophysics, Max-von-Laue-Str. 7-9, 60438, Frankfurt am Main, Germany
| | - Sophie Marianne Korn
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ) of Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438, Frankfurt am Main, Germany
| | - Lena Weiß
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ) of Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438, Frankfurt am Main, Germany
| | - Andreas Schlundt
- Institute for Molecular Biosciences and Biomolecular Resonance Center (BMRZ) of Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438, Frankfurt am Main, Germany.
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7
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Lin G, Qi H, Guo X, Wang W, Zhang M, Gao X. ARID1B blocks methionine-stimulated mTOR activation to inhibit milk fat and protein synthesis in and proliferation of mouse mammary epithelial cells. J Nutr Biochem 2023; 114:109274. [PMID: 36681308 DOI: 10.1016/j.jnutbio.2023.109274] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/03/2022] [Accepted: 01/13/2023] [Indexed: 01/20/2023]
Abstract
Met can function through the mTOR signaling pathway, but the molecular mechanism is not fully understood. Here we investigated the role of ARID1B in this regulatory process. ARID1B knockdown promoted milk fat and protein synthesis in and cell proliferation of HC11 cells and increased mTOR mRNA expression and protein phosphorylation, whereas ARID1B gene activation had the opposite effects. ARID1B gene activation totally blocked Met's stimulation on mTOR mRNA expression. ARID1B bound to one region of the mTOR promoter, and Met reduced the binding of ARID1B on this promoter. LY294002 blocked Met-induced reduction of ARID1B mRNA and protein level. Cycloheximide treatment did not affect the decrease of ARID1B by Met. MG132 but not chloroquine restored ARID1B degradation induced by Met. Our data reveal that ARID1B is a key negative regulator of milk fat and protein synthesis in and proliferation of HC11 cells, and blocks Met-stimulated mTOR gene transcription.
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Affiliation(s)
- Gang Lin
- College of Animal Science, Yangtze University, Jingzhou, China
| | - Hao Qi
- College of Animal Science, Yangtze University, Jingzhou, China
| | - Xudong Guo
- College of Animal Science, Yangtze University, Jingzhou, China
| | - Wenqiang Wang
- College of Animal Science, Yangtze University, Jingzhou, China
| | - Minghui Zhang
- College of Animal Science, Yangtze University, Jingzhou, China
| | - Xuejun Gao
- College of Animal Science, Yangtze University, Jingzhou, China.
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Korn SM, Von Ehr J, Dhamotharan K, Tants JN, Abele R, Schlundt A. Insight into the Structural Basis for Dual Nucleic Acid-Recognition by the Scaffold Attachment Factor B2 Protein. Int J Mol Sci 2023; 24:ijms24043286. [PMID: 36834708 PMCID: PMC9958909 DOI: 10.3390/ijms24043286] [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: 12/28/2022] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
The family of scaffold attachment factor B (SAFB) proteins comprises three members and was first identified as binders of the nuclear matrix/scaffold. Over the past two decades, SAFBs were shown to act in DNA repair, mRNA/(l)ncRNA processing and as part of protein complexes with chromatin-modifying enzymes. SAFB proteins are approximately 100 kDa-sized dual nucleic acid-binding proteins with dedicated domains in an otherwise largely unstructured context, but whether and how they discriminate DNA and RNA binding has remained enigmatic. We here provide the SAFB2 DNA- and RNA-binding SAP and RRM domains in their functional boundaries and use solution NMR spectroscopy to ascribe DNA- and RNA-binding functions. We give insight into their target nucleic acid preferences and map the interfaces with respective nucleic acids on sparse data-derived SAP and RRM domain structures. Further, we provide evidence that the SAP domain exhibits intra-domain dynamics and a potential tendency to dimerize, which may expand its specifically targeted DNA sequence range. Our data provide a first molecular basis of and a starting point towards deciphering DNA- and RNA-binding functions of SAFB2 on the molecular level and serve a basis for understanding its localization to specific regions of chromatin and its involvement in the processing of specific RNA species.
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Affiliation(s)
- Sophie M. Korn
- Institute for Molecular Biosciences, Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438 Frankfurt, Germany
| | - Julian Von Ehr
- Institute for Molecular Biosciences, Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438 Frankfurt, Germany
- IMPRS on Cellular Biophysics, Max-von-Laue-Str. 7-9, 60438 Frankfurt, Germany
| | - Karthikeyan Dhamotharan
- Institute for Molecular Biosciences, Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438 Frankfurt, Germany
| | - Jan-Niklas Tants
- Institute for Molecular Biosciences, Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438 Frankfurt, Germany
| | - Rupert Abele
- Institute for Biochemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
| | - Andreas Schlundt
- Institute for Molecular Biosciences, Biomolecular Resonance Center (BMRZ), Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438 Frankfurt, Germany
- Correspondence:
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9
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Li W, An N, Wang M, Liu X, Mei Z. Downregulation of AT-rich interaction domain 2 underlies natural killer cell dysfunction in oral squamous cell carcinoma. Immunol Cell Biol 2023; 101:78-90. [PMID: 36269235 DOI: 10.1111/imcb.12602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 09/15/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
Abstract
The immune system plays a significant role in controlling oral squamous cell carcinoma (OSCC) initiation and progression. Natural killer (NK) cells actively participate in antitumor immunity but become dysfunctional or exhausted in the tumor microenvironment. To explore the mechanisms of NK cell dysfunction in OSCC, we characterized the expression and function of AT-rich interaction domain 2 (ARID2) in NK cells in a murine OSCC model. ARID2 was downregulated in tongue NK cells compared with splenic NK cells. Notably, ARID2 was significantly decreased in NK cells with an exhausted phenotype and weakened antitumor function. ARID2 knockdown resulted in the upregulation of programmed cell death protein 1 (PD-1) and downregulation of interferon-gamma (IFN-γ), tumor necrosis factor (TNF), granzyme B and perforin in NK cells. As a result, ARID2 knockdown impaired NK cell cytotoxicity. Besides, ARID2 overexpression suppressed the expression of PD-1 and lymphocyte-activation gene 3, and promoted the expression of IFN-γ, TNF, granzyme B and perforin in NK cells which were adoptively transferred into OSCC-bearing mice. Taken together, our study implies that the OSCC microenvironment triggers ARID2 downregulation in intratumoral NK cells. In turn, ARID2 downregulation results in PD-1 upregulation on NK cells and subsequently impairs NK cell cytotoxicity. Therefore, we uncovered a novel mechanism of NK cell dysfunction in OSCC.
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Affiliation(s)
- Wei Li
- Department of Head and Neck Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ning An
- Department of Head and Neck Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mingwei Wang
- Department of Pathology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiguo Liu
- Department of Head and Neck Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhidan Mei
- Department of Head and Neck Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Reiner A, Kühl I. Highlight: Young research groups in Germany – 4th edition. Biol Chem 2022. [DOI: 10.1515/hsz-2022-0207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Andreas Reiner
- Department of Biology and Biotechnology , Ruhr University Bochum , Universitätsstrasse 150, D-44801 Bochum , Germany
| | - Inge Kühl
- Department of Cell Biology , Institute of Integrative Biology of the Cell (I2BC), UMR9198, CEA, CNRS, Université Paris-Saclay , F-91190 Gif-sur-Yvette , France
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