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Pan J, Ye F, Li H, Yu C, Mao J, Xiao Y, Chen H, Wu J, Li J, Fei L, Wu Y, Meng X, Guo G, Wang Y. Dissecting the immune discrepancies in mouse liver allograft tolerance and heart/kidney allograft rejection. Cell Prolif 2024; 57:e13555. [PMID: 37748771 PMCID: PMC10905343 DOI: 10.1111/cpr.13555] [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: 06/04/2023] [Revised: 08/23/2023] [Accepted: 09/15/2023] [Indexed: 09/27/2023] Open
Abstract
The liver is the most tolerogenic of transplanted organs. However, the mechanisms underlying liver transplant tolerance are not well understood. The comparison between liver transplantation tolerance and heart/kidney transplantation rejection will deepen our understanding of tolerance and rejection in solid organs. Here, we built a mouse model of liver, heart and kidney allograft and performed single-cell RNA sequencing of 66,393 cells to describe the cell composition and immune cell interactions at the early stage of tolerance or rejection. We also performed bulk RNA-seq of mouse liver allografts from Day 7 to Day 60 post-transplantation to map the dynamic transcriptional variation in spontaneous tolerance. The transcriptome of lymphocytes and myeloid cells were characterized and compared in three types of organ allografts. Cell-cell interaction networks reveal the coordinated function of Kupffer cells, macrophages and their associated metabolic processes, including insulin receptor signalling and oxidative phosphorylation in tolerance induction. Cd11b+ dendritic cells (DCs) in liver allografts were found to inhibit cytotoxic T cells by secreting anti-inflammatory cytokines such as Il10. In summary, we profiled single-cell transcriptome analysis of mouse solid organ allografts. We characterized the immune microenvironment of mouse organ allografts in the acute rejection state (heart, kidney) and tolerance state (liver).
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Affiliation(s)
- Jun Pan
- Department of Thyroid Surgery, the First Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
| | - Fang Ye
- Liangzhu LaboratoryZhejiang UniversityHangzhouChina
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Hui Li
- Key Laboratory of Combined Multiorgan Transplantation, Ministry of Public Health, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
| | - Chengxuan Yu
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Jiajia Mao
- Kidney Disease Center, The First Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
| | - Yanyu Xiao
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Haide Chen
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Junqing Wu
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Jiaqi Li
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Lijiang Fei
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Yijun Wu
- Department of Thyroid Surgery, the First Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
| | - Xiaoming Meng
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of PharmacyAnhui Medical University, The Key Laboratory of Anti‐inflammatory of Immune Medicines, Ministry of EducationHefeiChina
| | - Guoji Guo
- Liangzhu LaboratoryZhejiang UniversityHangzhouChina
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
- Zhejiang Provincial Key Lab for Tissue Engineering and Regenerative MedicineDr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative MedicineHangzhouZhejiangChina
| | - Yingying Wang
- Kidney Disease Center, The First Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
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Elbadry MI, Tawfeek A, Hirano T, El-Mokhtar MA, Kenawey M, Helmy AM, Ogawa S, Mughal MZ, Nannya Y. A rare homozygous variant in TERT gene causing variable bone marrow failure, fragility fractures, rib anomalies and extremely short telomere lengths with high serum IgE. Br J Haematol 2024; 204:1086-1095. [PMID: 37926112 DOI: 10.1111/bjh.19176] [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: 09/01/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
By whole exome sequencing, we identified a homozygous c.2086 C→T (p.R696C) TERT mutation in patients who present with a spectrum of variable bone marrow failure (BMF), raccoon eyes, dystrophic nails, rib anomalies, fragility fractures (FFs), high IgE level, extremely short telomere lengths (TLs), and skewed numbers of cytotoxic T cells with B and NK cytopenia. Haploinsufficiency in the other family members resulted in short TL and osteopenia. These patients also had the lowest bone mineral density Z-score compared to other BMF-patients. Danazol/zoledronic acid improved the outcomes of BMF and FFs. This causative TERT variant has been observed in one family afflicted with dyskeratosis congenita (DC), and thus, we also define a second report and new phenotype related to the variant which should be suspected in severe cases of DC with co-existent BMF, FFs, high IgE level and rib anomalies.
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Affiliation(s)
- Mahmoud I Elbadry
- Division of Haematology, Department of Internal Medicine, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Ahmed Tawfeek
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Tomonori Hirano
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Mohamed A El-Mokhtar
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Asyut, Egypt
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - Mohamed Kenawey
- Orthopedic Surgery Department, Faculty of Medicine, Sohag University, Sohag, Egypt
- Royal Manchester Children's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Ahmed M Helmy
- Department of Internal Medicine, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, Japan
- Department of Medicine, Centre for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden
| | - M Zulf Mughal
- Pediatric Bone Disorders, Al Jalila Children's Speciality Hospital, Dubai, UAE
| | - Yasuhito Nannya
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
- Division of Hematopoietic Disease Control, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Gu Q, Zhao X, Guo J, Jin Q, Wang T, Xu W, Li L, Zhang J, Zhang W, Hong S, Zhang F, Hou B, Zhou X. The splicing isoform Foxp3Δ2 differentially regulates tTreg and pTreg homeostasis. Cell Rep 2023; 42:112877. [PMID: 37498744 DOI: 10.1016/j.celrep.2023.112877] [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: 01/23/2023] [Revised: 06/09/2023] [Accepted: 07/12/2023] [Indexed: 07/29/2023] Open
Abstract
Foxp3 is the master transcription factor for regulatory T cells (Tregs). Alternative splicing of human Foxp3 results in the expression of two isoforms: the full length and an exon 2-deleted protein. Here, AlphaFold2 predictions and in vitro experiments demonstrate that the N-terminal domain of Foxp3 inhibits DNA binding by moving toward the C terminus and that this movement is mediated by exon 2. Consequently, we find that Foxp3Δ2-bearing thymus-derived Tregs (tTregs) in the peripheral lymphoid organ are less sensitive to T cell receptor (TCR) stimulation due to the enhanced binding of Foxp3Δ2 to the Batf promoter and are hyporesponsive to interleukin-2 (IL-2). In contrast, among RORγt+ peripherally induced Tregs (pTregs) in the large intestine, Foxp3Δ2 pTregs express many more RORγt-related genes, conferring a competitive advantage. Together, our results reveal that alternative splicing of exon 2 generates an active form of Foxp3, which plays a differential role in regulating tTreg and pTreg homeostasis.
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Affiliation(s)
- Qianchong Gu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Xiufeng Zhao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Jie Guo
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China
| | - Qiuzhu Jin
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Ting Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Wei Xu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Liping Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Jianhua Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China
| | - Wei Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China
| | - Sheng Hong
- Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Fuping Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Baidong Hou
- Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Xuyu Zhou
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science (CAS), Beijing 100101, China; Department of Savaid Medical School, University of Chinese Academy of Sciences (CAS), Beijing 100049, China.
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Li Y, Cao H, Jiang Z, Yan K, Shi J, Wang S, Wang F, Wang W, Li X, Sun N, Liu L, Chen L, Chen Y, Guo R, Song Y. CCL17 acts as an antitumor chemokine in micromilieu‐driven immune skewing. Int Immunopharmacol 2023; 118:110078. [PMID: 37001380 DOI: 10.1016/j.intimp.2023.110078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/07/2023] [Accepted: 03/21/2023] [Indexed: 03/31/2023]
Abstract
BACKGROUND Chemokines are critical players in the local immune responses to tumors. CCL17 (thymus and activation-regulated chemokine, TARC) and CCL22 (macrophage-derived chemokine, MDC) can attract CCR4-bearing cells involving the immune landscape of cancer. However, their direct roles and functional states in tumors remain largely unclear. METHODS We analyzed the lymphoma-related scRNA-seq and bulk RNA-seq datasets and identified the CCL17/CCL22-CCR4 axis as the unique participant of the tumor microenvironment. Then we edited the A20 lymphoma cell line to express CCL17 and CCL22 and assessed their function using three mouse models (Balb/C mouse, Nude mouse, and NSG mouse). In addition, we retrospectively checked the relationship between the CCL17/CCL22-CCR4 axis and the survival rates of cancer patients. RESULTS The active CCL17/CCL22-CCR4 axis is a distinctive feature of the Hodgkin lymphoma microenvironment. CCR4 is widely expressed in immune cells but highly exists on the surface of NK, NKT, and Treg cells. The tumor model of Balb/C mice showed that CCL17 acts as an anti-tumor chemokine mediated by activated T cell response. In addition, the tumor model of Nude mice showed that CCL17 recruits NK cells for inhibiting lymphoma growth and enhances the NK-cDC1 interaction for resisting IL4i1-mediated immunosuppression. Interestingly, CCL17-mediated antitumor immune responses depend on lymphoid lineages but not mainly myeloid ones. Furthermore, we found CCL17/CCL22-CCR4 axis cannot be regarded as biomarkers of poor prognosis in most cancer types from the TCGA database. CONCLUSION We provided direct evidence of antitumor functions of CCL17 mediated by the recruitment of conventional T cells, NKT cells, and NK cells. Clinical survival outcomes of target gene (CCL17, CCL22, and CCR4) expression also identified that CCL17/CCL22-CCR4 axis is not a marker of poor prognosis.
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Nucleolar protein NOC4L inhibits tumorigenesis and progression by attenuating SIRT1-mediated p53 deacetylation. Oncogene 2022; 41:4474-4484. [PMID: 36030331 DOI: 10.1038/s41388-022-02447-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 08/11/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022]
Abstract
SIRT1 is an NAD+-dependent deacetylase and plays an important role in the deacetylation of both histone and non-histone proteins. Many studies revealed that SIRT1 is upregulated in a variety of tumors and tightly associated with tumorigenesis and cancer progression, but the detailed underlying mechanism of the biological processes remains unclarified. In the present study, we found a nucleolar protein NOC4L, human ortholog of yeast Noc4p, which is essential for the nuclear export of the ribosomal 40S subunit and could bind to SIRT1 to inhibit SIRT1 mediated deacetylation of p53. NOC4L interacts with SIRT1 in variety of cells under nucleolar stress and directly interacts with SIRT1 in vitro. Furthermore, we determined the C-terminal of NOC4L and the catalytic domain of SIRT1 were required for their interaction. Overexpression of NOC4L did not change the protein levels of SIRT1 or p53, but increased the acetylation of p53 and promoted cell apoptosis. Additionally, NOC4L inhibited tumor cell proliferation in a p53-dependent manner and restrained tumor growth in a nude mice xenograft model. Clinically, colorectal cancer patients with the high expression of NOC4L had a better prognosis as TP53 was normally expressed, but no significant difference was observed in survival with mutant TP53. Taken together, our results identified a novel SIRT1 regulatory protein and broaden our understanding of the molecular mechanism of how nucleolar protein NOC4L regulates p53 under nucleolar stress. This research provides an insight into tumorigenesis and cell self-protection in the early stage of DNA damage.
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Zhang M, Zhao W, Liu S, Liu H, Liu L, Peng Q, Du C, Jiang N. H/ACA snoRNP Gene Family as Diagnostic and Prognostic Biomarkers for Hepatocellular Carcinoma. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2021; 14:1331-1345. [PMID: 34703278 PMCID: PMC8541795 DOI: 10.2147/pgpm.s333838] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 09/28/2021] [Indexed: 01/05/2023]
Abstract
Background The H/ACA small nucleolar ribonucleoprotein (snoRNP) gene family, including GAR1 ribonucleoprotein (GAR1), NHP2 ribonucleoprotein (NHP2), NOP10 ribonucleoprotein (NOP10), and dyskerin pseudouridine synthase 1 (DKC1), play important roles in ribosome biogenesis. However, the potential clinical value of the H/ACA snoRNP gene family in hepatocellular carcinoma (HCC) has not yet been reported. Methods Bioinformation databases were used to analyze the expression and roles of the H/ACA snoRNP gene family in HCC. Survival analysis, Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes enrichment pathway (KEGG) analyses were performed using R software. Tumor Immune Estimation Resource (TIMER) was used to analyze the correlation between the expression of the H/ACA snoRNP gene family and immune infiltration in HCC. Finally, immunohistochemistry and Western blotting were performed to verify the protein expression of the H/ACA snoRNP gene family in HCC tissues and adjacent tissues. Results The expression of the H/ACA snoRNP gene family was significantly increased in HCC samples compared to normal tissues, and the area under the curve (AUC) of GAR1, NHP2, NOP10, and DKC1 was 0.898, 0.962, 0.884, and 0.911, respectively. Increased expression of the H/ACA snoRNP gene family was associated with poor prognosis in HCC patients (Hazard Ratio, HR = 1.44 [1.02-2.04], 1.70 [1.20-2.40], 1.53 [1.09-2.17], and 1.43 [1.02-2.03], respectively; log-rank P = 0.036, 0.003, 0.014, 0.039, respectively). GO and KEGG analyses showed that co-expressed genes were primarily enriched in ribosome biogenesis. In addition, upregulated expression of H/ACA snoRNP gene family was related to the infiltration of various immune cells and multiple T cell exhaustion markers in HCC patients. Immunohistochemical analysis and Western blotting showed that the protein expression of H/ACA snoRNP gene family was higher in HCC tissues than in adjacent tissues of clinical samples. Conclusion H/ACA snoRNP gene family expression was higher in HCC tissues than in normal or adjacent tissues and was highly associated with poor prognosis of HCC patients and, therefore, has the potential to serve as diagnostic and prognostic biomarkers for HCC.
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Affiliation(s)
- Mi Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Wei Zhao
- School of Basic Medical Science, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Shanshan Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Haichuan Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Liang Liu
- School of Basic Medical Science, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Qiling Peng
- School of Basic Medical Science, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Chengyou Du
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Ning Jiang
- Department of Pathology, Chongqing Medical University, Chongqing, 400016, People's Republic of China
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Qin Y, Jia L, Liu H, Ma W, Ren X, Li H, Liu Y, Li H, Ma S, Liu M, Li P, Yan J, Zhang J, Guo Y, You H, Guo Y, Rahman NA, Wołczyński S, Kretowski A, Li D, Li X, Ren F, Li X. Macrophage deletion of Noc4l triggers endosomal TLR4/TRIF signal and leads to insulin resistance. Nat Commun 2021; 12:6121. [PMID: 34675215 PMCID: PMC8531303 DOI: 10.1038/s41467-021-26408-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 08/19/2021] [Indexed: 12/14/2022] Open
Abstract
In obesity, macrophages drive a low-grade systemic inflammation (LSI) and insulin resistance (IR). The ribosome biosynthesis protein NOC4 (NOC4) mediates 40 S ribosomal subunits synthesis in yeast. Hereby, we reported an unexpected location and function of NOC4L, which was preferentially expressed in human and mouse macrophages. NOC4L was decreased in both obese human and mice. The macrophage-specific deletion of Noc4l in mice displayed IR and LSI. Conversely, Noc4l overexpression by lentivirus treatment and transgenic mouse model improved glucose metabolism in mice. Importantly, we found that Noc4l can interact with TLR4 to inhibit its endocytosis and block the TRIF pathway, thereafter ameliorated LSI and IR in mice.
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Affiliation(s)
- Yongli Qin
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Lina Jia
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Huijiao Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Wenqiang Ma
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xinmin Ren
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Haifeng Li
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yuanwu Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Haiwen Li
- Agricultural Research Station, College of Agriculture, Virginia State University, Petersburg, VA, USA
| | - Shuoqian Ma
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Mei Liu
- Department of Pathology, Chinese PLA General Hospital, Beijing, China
| | - Pingping Li
- Academy of Medical Sciences & Peking Union, Medical College, Beijing, China
| | - Jinghua Yan
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Jiyan Zhang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, Beijing, China
| | - Yangdong Guo
- State Key Laboratory of the Agro-Biotechnology, College of Horticultural Science, China Agricultural University, Beijing, China
| | - Hua You
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Yan Guo
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Nafis A Rahman
- Department of Physiology, Institute of Biomedicine, University of Turku, Turku, Finland
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - Sławomir Wołczyński
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - Adam Kretowski
- Department of Endocrinology, Diabetology, and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Dangsheng Li
- Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xiru Li
- Department of Surgery, Chinese PLA General Hospital, Beijing, China
| | - Fazheng Ren
- Department of Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Xiangdong Li
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland.
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Expression of Tim-3 drives phenotypic and functional changes in Treg cells in secondary lymphoid organs and the tumor microenvironment. Cell Rep 2021; 36:109699. [PMID: 34525351 PMCID: PMC8482289 DOI: 10.1016/j.celrep.2021.109699] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 04/29/2021] [Accepted: 08/18/2021] [Indexed: 12/17/2022] Open
Abstract
Regulatory T cells (Treg cells) are critical mediators of self-tolerance, but they can also limit effective anti-tumor immunity. Although under homeostasis a small fraction of Treg cells in lymphoid organs express the putative checkpoint molecule Tim-3, this protein is expressed by a much larger proportion of tumor-infiltrating Treg cells. Using a mouse model that drives cell-type-specific inducible Tim-3 expression, we show that expression of Tim-3 by Treg cells is sufficient to drive Treg cells to a more effector-like phenotype, resulting in increases in suppressive activity, effector T cell exhaustion, and tumor growth. We also show that T-reg-cell-specific inducible deletion of Tim-3 enhances anti-tumor immunity. Enhancement of Treg cell function by Tim-3 is strongly correlated with increased expression of interleukin-10 (IL-10) and a shift to a more glycolytic metabolic phenotype. Our data demonstrate that Tim-3+ Treg cells may be a relevant therapeutic target cell type for the treatment of cancer. Regulatory T cells (Treg cells) limit the immune response to tumors, and tumor-infiltrating Treg cells are especially suppressive. However, the mechanisms underlying enhanced Treg cell function are poorly understood. Banerjee et al. show that Tim-3 expression is linked to increased Treg cell suppressive activity, possibly through the cytokine IL-10, in mouse models and people with cancer.
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Shidal C, Shu X, Wu J, Wang J, Huang S, Long J, Bauer JA, Ping J, Guo X, Zheng W, Shu XO, Cai Q. Functional Genomic Analyses of the 21q22.3 Locus Identifying Functional Variants and Candidate Gene YBEY for Breast Cancer Risk. Cancers (Basel) 2021; 13:cancers13092037. [PMID: 33922500 PMCID: PMC8122893 DOI: 10.3390/cancers13092037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Previous research has revealed a genetic predisposition to breast carcinogenesis. Thus, identifying causal genetic variants and their associated gene networks may improve breast cancer diagnostics and risk assessment. Our study investigated YBEY, an uncharacterized gene in humans, and its functions in breast cancer risk and progression. We identified two genetic variants associated with YBEY expression that may have causal functions in breast cancer risk. We performed in vitro functional assays using MCF-7, T47D, and MDA-MB-231 breast cancer cell lines and showed that knockdown of YBEY expression significantly inhibited proliferation, colony formation, and invasion/migration. We utilized RNA sequencing to identify gene networks associated with YBEY knockdown including inflammation and metabolic pathways. Further, we used data available in The Cancer Genome Atlas to explore trends in YBEY expression patterns in normal and tumor tissues. Our study provides a role for YBEY in breast carcinogenesis, and further studies investigating its mechanistic functions are warranted. Abstract We previously identified a locus at 21q22.3, tagged by the single nucleotide polymorphism (SNP) rs35418111, being associated with breast cancer risk at a genome-wide significance level; however, the underlying causal functional variants and gene(s) responsible for this association are unknown. We performed functional genomic analyses to identify potential functional variants and target genes that may mediate this association. Functional annotation for SNPs in high linkage disequilibrium (LD, r2 > 0.8) with rs35418111 in Asians showed evidence of promoter and/or enhancer activities, including rs35418111, rs2078203, rs8134832, rs57385578, and rs8126917. These five variants were assessed for interactions with nuclear proteins by electrophoretic mobility shift assays. Our results showed that the risk alleles for rs2078203 and rs35418111 altered DNA-protein interaction patterns. Cis-expression quantitative loci (cis-eQTL) analysis, using data from the Genotype-Tissue Expression database (GTEx) European-ancestry female normal breast tissue, indicated that the risk allele of rs35418111 was associated with a decreased expression of the YBEY gene, a relatively uncharacterized endoribonuclease in humans. We investigated the biological effects of YBEY on breast cancer cell lines by transient knock-down of YBEY expression in MCF-7, T47D, and MDA-MB-231 cell lines. Knockdown of YBEY mRNA in breast cancer cell lines consistently decreased cell proliferation, colony formation, and migration/invasion, regardless of estrogen receptor status. We performed RNA sequencing in MDA-MB-231 cells transfected with siRNA targeting YBEY and subsequent gene set enrichment analysis to identify gene networks associated with YBEY knockdown. These data indicated YBEY was involved in networks associated with inflammation and metabolism. Finally, we showed trends in YBEY expression patterns in breast tissues from The Cancer Genome Atlas (TCGA); early-stage breast cancers had elevated YBEY expression compared with normal tissue, but significantly decreased expression in late-stage disease. Our study provides evidence of a significant role for the human YBEY gene in breast cancer pathogenesis and the association between the rs35418111/21q22.3 locus and breast cancer risk, which may be mediated through functional SNPs, rs35418111 and rs2078203, that regulate expression of YBEY.
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Affiliation(s)
- Chris Shidal
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Xiang Shu
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
- Memorial Sloan Kettering Cancer Center, Department of Epidemiology & Biostatistics, New York, NY 10075, USA
| | - Jie Wu
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Jifeng Wang
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Shuya Huang
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
- Department of Breast Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, China
| | - Jirong Long
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Joshua A. Bauer
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37203, USA;
| | - Jie Ping
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Xingyi Guo
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Wei Zheng
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Xiao-Ou Shu
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
| | - Qiuyin Cai
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA; (C.S.); (X.S.); (J.W.); (J.W.); (S.H.); (J.L.); (J.P.); (X.G.); (W.Z.); (X.-O.S.)
- Correspondence: ; Tel.: +1-615-936-1351; Fax: +1-615-936-8291
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朱 雪, 周 旭. Treg细胞亚群的流式检测. Bio Protoc 2019. [DOI: 10.21769/bioprotoc.1010304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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11
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朱 雪, 周 旭. Treg细胞功能的流式检测. Bio Protoc 2019. [DOI: 10.21769/bioprotoc.1010305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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