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Nuiyen A, Sanguansermsri D, Sayasathid J, Thatsakorn K, Thapmongkol S, Ngoenkam J, Pongcharoen S. Nck1 regulates the in vitro development of human regulatory T cells through AKT pathway. Clin Exp Immunol 2025; 219:uxaf011. [PMID: 39963999 PMCID: PMC11923542 DOI: 10.1093/cei/uxaf011] [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: 04/20/2024] [Revised: 12/13/2024] [Accepted: 02/14/2025] [Indexed: 03/21/2025] Open
Abstract
T cell receptor (TCR) signalling is crucial in determining the fate of thymocyte differentiation in the thymus. The high-avidity interaction between TCR and self-peptide-MHC complexes induces development of regulatory T cells (Tregs), lineage commitment for which is controlled by expression of transcription factor Forkhead box P3 (FoxP3). The non-catalytic region of the tyrosine kinase (Nck) comprises two members, Nck1 and Nck2, with Nck1 playing a dominant role in TCR-mediated T cell activation and function. Nck's role, while established in thymocyte development, remains unelucidated in development of Tregs. In this study, we aimed to determine the function of Nck1 in the in vitro development and differentiation of human thymocytes. Human thymocytes were transfected with shRNA plasmid to silence Nck1 expression. The number of FoxP3+ Tregs decreased noticeably in Nck1 knockdown thymocytes after co-cultivation with myeloid dendritic cells (mDCs) and thymic epithelial cells for 14 days. Furthermore, decreased phosphorylation of AKT and FoxO1 was observed in Nck1-silenced thymocytes, in association with reduced FoxO1 nuclear localization. Taken together, these findings identify the pivotal role of Nck1 in Treg development.
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Affiliation(s)
- Aussanee Nuiyen
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Donruedee Sanguansermsri
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Jarun Sayasathid
- Division of Cardiothoracic Surgery, Department of Surgery, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Kanthachat Thatsakorn
- Division of Cardiothoracic Surgery, Department of Surgery, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Siraphop Thapmongkol
- Division of Cardiothoracic Surgery, Department of Surgery, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Jatuporn Ngoenkam
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Sutatip Pongcharoen
- Division of Immunology, Department of Medicine, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
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2
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Molecular Characterization of a B Cell Adaptor for Phosphoinositide 3-Kinase Homolog in Lamprey ( Lampetra japonica) and Its Function in the Immune Response. Int J Mol Sci 2022; 23:ijms232214449. [PMID: 36430927 PMCID: PMC9695028 DOI: 10.3390/ijms232214449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/22/2022] Open
Abstract
Human B cell adaptor for phosphoinositide 3-kinase (BCAP) is identified as an adaptor protein expressed in B cells and plays a critical immunomodulatory role in B cell receptor signaling and humoral immune response. In the current study, a homolog of BCAP (Lja-BCAP) was identified in Lampetra japonica. The open reading frame of Lja-BCAP contains 2181bp nucleotides and encodes a protein of 726 amino acids. After being stimulated by mixed bacteria, the mRNA and protein expression levels of Lja-BCAP and the activation levels of tyrosine kinases increased significantly in peripheral blood lymphocytes, gills and supraneural myeloid bodies, respectively. However, after the knockdown of Lja-BCAP by RNAi in vivo, the activation of tyrosine kinases was inhibited in the above tissues, which indicated that Lja-BCAP participated in the anti-bacterial immune response of lampreys. After lipopolysaccharide (LPS) stimulation, the expression of Lja-BCAP in peripheral blood lymphocytes, gills and supraneural myeloid bodies were significantly up-regulated 2.5, 2.2, and 11.1 times (p < 0.05) compared to the control group, respectively; while after phytohemagglutinin (PHA) stimulation, the up-regulation of Lja-BCAP was only detected in peripheral blood lymphocytes. The above results show that Lja-BCAP mainly participates in the LPS-mediated immune response of lampreys.
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Miao Y, Jiang M, Qi L, Yang D, Xiao W, Fang F. BCAP Regulates Dendritic Cell Maturation Through the Dual-Regulation of NF-κB and PI3K/AKT Signaling During Infection. Front Immunol 2020; 11:250. [PMID: 32133012 PMCID: PMC7040100 DOI: 10.3389/fimmu.2020.00250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/30/2020] [Indexed: 12/20/2022] Open
Abstract
The maturation of dendritic cells (DCs) is essential in adaptive immunity. B cell adapter for phosphoinositide 3-kinase (BCAP) has been shown a divergent activities in cell type dependent manner including B cells, NK cells, macrophages, and plasmacytoid DCs (pDCs), however, its role in conventional DCs (cDCs) remains unknown. Here, we report that BCAP negatively regulates Toll-like receptor-induced cDC maturation and inhibits cDCs from inducing antigen-specific T cell responses, thereby weakening the antibacterial adaptive immune responses of mice in a Listeria monocytogenes-infection model. Furthermore, we demonstrate that BCAP simultaneously modulates the activation of the NF-κB and PI3K/AKT signaling by dynamically interacting with, respectively, MyD88 and the p85α subunit of PI3K. Our study thus reveals non-redundant roles for BCAP in regulating cDC maturation and reveals a bilateral signal transduction mechanism.
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Affiliation(s)
- Yuhui Miao
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, China
| | - Ming Jiang
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, China
| | - Lu Qi
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, China
| | - De Yang
- Cancer and Inflammation Program, Frederick National Laboratory for Cancer Research, Center for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - Weihua Xiao
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, China
| | - Fang Fang
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Institute of Immunology, University of Science and Technology of China, Hefei, China.,Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, China
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4
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Lauenstein JU, Udgata A, Bartram A, De Sutter D, Fisher DI, Halabi S, Eyckerman S, Gay NJ. Phosphorylation of the multifunctional signal transducer B-cell adaptor protein (BCAP) promotes recruitment of multiple SH2/SH3 proteins including GRB2. J Biol Chem 2019; 294:19852-19861. [PMID: 31527084 PMCID: PMC6937578 DOI: 10.1074/jbc.ra119.009931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/10/2019] [Indexed: 12/21/2022] Open
Abstract
B-cell adaptor protein (BCAP) is a multimodular, multifunctional signal transducer that regulates signal transduction pathways in leukocytes, including macrophages, B-cells, and T-cells. In particular, BCAP suppresses inflammatory signaling by Toll-like receptors (TLRs). However, how BCAP itself is regulated and what its interaction partners are is unclear. Here, using human immune cell lines, including THP-1 cells, we characterized the complex phosphorylation patterns of BCAP and used a novel protein complex trapping strategy, called virotrap, to identify its interaction partners. This analysis identified known interactions of BCAP with phosphoinositide 3-kinase (PI3K) p85 subunit and NCK adaptor protein (NCK), together with previously unknown interactions of BCAP with Src homology 2 (SH2) and SH3 domain-containing adaptor proteins, notably growth factor receptor-bound protein 2 (GRB2) and CRK-like proto-oncogene, adaptor protein (CRKL). We show that the SH3 domain of GRB2 can bind to BCAP independently of BCAP phosphorylation status, suggesting that the SH2 domains mediate interactions with activated receptor tyrosine kinase complexes including the CD19 subunit of the B-cell receptor. Our results also suggested that the PI3K p85 subunit binds to BCAP via SH3 domains forming an inactive complex that is then activated by sequential binding with the SH2 domains. Taken together, our results indicate that BCAP is a complex hub that processes signals from multiple pathways in diverse cell types of the immune system.
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Affiliation(s)
- Johannes U Lauenstein
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom
| | - Atul Udgata
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom
| | - Alex Bartram
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom
| | - Delphine De Sutter
- Department of Biomolecular Medicine, Ghent University, VIB Center for Medical Biotechnology, VIB, A. Baertsoenkaai 3, Ghent B-9000, Belgium
| | - David I Fisher
- Discovery Sciences, Discovery Biology, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, United Kingdom
| | - Samer Halabi
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom
| | - Sven Eyckerman
- Department of Biomolecular Medicine, Ghent University, VIB Center for Medical Biotechnology, VIB, A. Baertsoenkaai 3, Ghent B-9000, Belgium
| | - Nicholas J Gay
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom
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5
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Zhou C, Li J, Li J, Wan Y, Li T, Ma P, Wang Y, Sang H. Hsa-miR-137, hsa-miR-520e and hsa-miR-590-3p perform crucial roles in Lynch syndrome. Oncol Lett 2016; 12:2011-2017. [PMID: 27602130 DOI: 10.3892/ol.2016.4816] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 05/17/2016] [Indexed: 01/05/2023] Open
Abstract
The aim of the present study was to identify the differentially expressed microRNAs (DEMs) between Lynch syndrome (LS) and the normal colonic (N-C) control samples, predict the target genes (TGs) and analyze the potential functions of the DEMs and TGs. The miRNA expression dataset GSE30454, which included data of 13 LS and 20 N-C tissue samples, was downloaded from the Gene Expression Omnibus. The classical t-test in Linear Models for Microarray Data package was used for DEM identification. TG prediction was performed using 5 databases. The regulatory network of the DEMs and their TGs was constructed using Cytoscape. Functional and pathway enrichment analysis was performed. The transcription factors (TFs), tumor-associated genes (TAG) and tumor suppressor genes (TSGs) were then identified. Three key DEMs hsa-miR-137, hsa-miR-520e, and hsa-miR-590-3p were identified. Hsa-miR-520e and hsa-miR-137 had 4 common TGs, including SNF related kinase, metal-regulatory transcription factor 1 (MTF1), round spermatid basic protein 1 and YTH N6-methyladenosine RNA binding protein 3; hsa-miR-590-3p and hsa-miR-137 had 14 common TGs, including NCK adaptor protein 1 (NCK1), EPH receptor A7, and stress-associated endoplasmic reticulum protein 1; hsa-miR-590-3p and hsa-miR-520e had 12 common TGs, including Krüppel-like factor (KLF) 13, twinfilin actin binding protein 1, and nuclear factor I B. Through the functional and pathway enrichments analysis, MTF1 was involved in regulation of gene expression and metabolic processes, and sequence-specific DNA binding TF activity. KLF13 was involved in regulation of gene expression and regulation of cellular metabolic processes. NCK1 was enriched in the axon guidance pathway. In addition, the functional and pathway enrichment analysis showed certain TGs, such as hypoxia-inducible factor 1α, AKT serine/threonine kinase 2, and rapamycin-insensitive companion of mammalian target of rapamycin, participated in the mTOR signaling pathway. The 3 key DEMs hsa-miR-137, hsa-miR-520e, and hsa-miR-590-3p may have important roles in the process of LS.
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Affiliation(s)
- Changyu Zhou
- Digest Department, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Jiayu Li
- Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Jiarui Li
- Pharmacy Department, Tumor Hospital of Jilin, Changchun, Jilin 130012, P.R. China
| | - Yingchun Wan
- Department of Endocrinology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Tao Li
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Piyong Ma
- Department of Emergency Medicine, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Yingjian Wang
- Department of Gynaecology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Haiyan Sang
- Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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6
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Allen JC, Talab F, Slupsky JR. Targeting B-cell receptor signaling in leukemia and lymphoma: how and why? Int J Hematol Oncol 2016; 5:37-53. [PMID: 30302202 DOI: 10.2217/ijh-2016-0003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/13/2016] [Indexed: 01/04/2023] Open
Abstract
B-lymphocytes are dependent on B-cell receptor (BCR) signaling for the constant maintenance of their physiological function, and in many B-cell malignancies this signaling pathway is prone to aberrant activation. This understanding has led to an ever-increasing interest in the signaling networks activated following ligation of the BCR in both normal and malignant cells, and has been critical in establishing an array of small molecule inhibitors targeting BCR-induced signaling. By dissecting how different malignancies signal through BCR, researchers are contributing to the design of more customized therapeutics which have greater efficacy and lower toxicity than previous therapies. This allows clinicians access to an array of approaches to best treat patients whose malignancies have BCR signaling as a driver of pathogenesis.
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Affiliation(s)
- John C Allen
- Department of Molecular & Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GE, UK.,Department of Molecular & Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GE, UK
| | - Fatima Talab
- Redx Oncology Plc, Duncan Building, Royal Liverpool University Hospital, Daulby Street, Liverpool, L69 3GA, UK.,Redx Oncology Plc, Duncan Building, Royal Liverpool University Hospital, Daulby Street, Liverpool, L69 3GA, UK
| | - Joseph R Slupsky
- Department of Molecular & Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Ashton Street, Liverpool, L69 3GE, UK.,Department of Molecular & Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Ashton Street, Liverpool, L69 3GE, UK
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7
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Affiliation(s)
- Clara L Oeste
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
| | - Balbino Alarcón
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
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8
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Slupsky JR. Does B cell receptor signaling in chronic lymphocytic leukaemia cells differ from that in other B cell types? SCIENTIFICA 2014; 2014:208928. [PMID: 25101192 PMCID: PMC4102070 DOI: 10.1155/2014/208928] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 06/02/2014] [Indexed: 06/03/2023]
Abstract
Chronic lymphocytic leukaemia (CLL) is an incurable malignancy of mature B cells. CLL is important clinically in Western countries because of its commonality and because of the significant morbidity and mortality associated with the progressive form of this incurable disease. The B cell receptor (BCR) expressed on the malignant cells in CLL contributes to disease pathogenesis by providing signals for survival and proliferation, and the signal transduction pathway initiated by engagement of this receptor is now the target of several therapeutic strategies. The purpose of this review is to outline current understanding of the BCR signal cascade in normal B cells and then question whether this understanding applies to CLL cells. In particular, this review studies the phenomenon of anergy in CLL cells, and whether certain adaptations allow the cells to overcome anergy and allow full BCR signaling to take place. Finally, this review analyzes how BCR signals can be therapeutically targeted for the treatment of CLL.
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Affiliation(s)
- Joseph R. Slupsky
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, 6th Floor, Duncan Building, Daulby Street, Liverpool L69 3GA, UK
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