1
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Zhang J, Wang G, Ma J, Duan Y, Sharma SA, Oladejo S, Ma X, Arellano G, Orchard RC, Reese TA, Kuang Z. HDAC3 integrates TGF-β and microbial cues to program tuft cell biogenesis and diurnal rhythms in mucosal immune surveillance. Sci Immunol 2024; 9:eadk7387. [PMID: 39331726 DOI: 10.1126/sciimmunol.adk7387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 04/29/2024] [Accepted: 08/29/2024] [Indexed: 09/29/2024]
Abstract
The intestinal mucosal surface is directly exposed to daily fluctuations in food and microbes driven by 24-hour light and feeding cycles. Intestinal epithelial tuft cells are key sentinels that surveil the gut luminal environment, but how these cells are diurnally programmed remains unknown. Here, we show that histone deacetylase 3 (HDAC3) controls tuft cell specification and the diurnal rhythm of its biogenesis, which is regulated by the gut microbiota and feeding schedule. Disruption of epithelial HDAC3 decreases tuft cell numbers, impairing antihelminth immunity and norovirus infection. Mechanistically, HDAC3 functions noncanonically to activate transforming growth factor-β (TGF-β) signaling, which promotes rhythmic expression of Pou2f3, a lineage-defining transcription factor of tuft cells. Our findings reveal an environmental-epigenetic link that controls the diurnal differentiation of tuft cells and promotes rhythmic mucosal surveillance and immune responses in anticipation of exogenous challenges.
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Affiliation(s)
- Jianglin Zhang
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Guoxun Wang
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Junjie Ma
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Yiran Duan
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Samskrathi A Sharma
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Sarah Oladejo
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Xianda Ma
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Giselle Arellano
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Robert C Orchard
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tiffany A Reese
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Zheng Kuang
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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2
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Feng X, Flüchter P, De Tenorio JC, Schneider C. Tuft cells in the intestine, immunity and beyond. Nat Rev Gastroenterol Hepatol 2024:10.1038/s41575-024-00978-1. [PMID: 39327439 DOI: 10.1038/s41575-024-00978-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/02/2024] [Indexed: 09/28/2024]
Abstract
Tuft cells have gained substantial attention over the past 10 years due to numerous reports linking them with type 2 immunity and microorganism-sensing capacity in many mucosal tissues. This heightened interest is fuelled by their unique ability to produce an array of biological effector molecules, including IL-25, allergy-related eicosanoids, and the neurotransmitter acetylcholine, enabling downstream responses in diverse cell types. Operating through G protein-coupled receptor-mediated signalling pathways reminiscent of type II taste cells in oral taste buds, tuft cells emerge as chemosensory sentinels that integrate luminal conditions, eliciting appropriate responses in immune, epithelial and neuronal populations. How tuft cells promote tissue alterations and adaptation to the variety of stimuli at mucosal surfaces has been explored in multiple studies in the past few years. Since the initial recognition of the role of tuft cells, the discovery of diverse tuft cell effector functions and associated feedback loops have also revealed the complexity of tuft cell biology. Although earlier work largely focused on extraintestinal tissues, novel genetic tools and recent mechanistic studies on intestinal tuft cells established fundamental concepts of tuft cell activation and functions. This Review is an overview of intestinal tuft cells, providing insights into their development, signalling and interaction modules in immunity and other states.
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Affiliation(s)
- Xiaogang Feng
- Department of Physiology, University of Zurich, Zurich, Switzerland
| | - Pascal Flüchter
- Department of Physiology, University of Zurich, Zurich, Switzerland
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3
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Rajeev S, Li S, Leon-Coria A, Wang A, Kraemer L, Wang SJ, Boim A, Flannigan K, Shute A, Baggio CH, Callejas BE, MacNaughton WK, Finney CAM, McKay DM. Enteric tuft cells coordinate timely expulsion of the tapeworm Hymenolepis diminuta from the murine host by coordinating local but not systemic immunity. PLoS Pathog 2024; 20:e1012381. [PMID: 39083533 PMCID: PMC11290655 DOI: 10.1371/journal.ppat.1012381] [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: 09/06/2023] [Accepted: 06/28/2024] [Indexed: 08/02/2024] Open
Abstract
Recognizing that enteric tuft cells can signal the presence of nematode parasites, we investigated whether tuft cells are required for the expulsion of the cestode, Hymenolepis diminuta, from the non-permissive mouse host, and in concomitant anti-helminthic responses. BALB/c and C57BL/6 mice infected with H. diminuta expelled the worms by 11 days post-infection (dpi) and displayed DCLK1+ (doublecortin-like kinase 1) tuft cell hyperplasia in the small intestine (not the colon) at 11 dpi. This tuft cell hyperplasia was dependent on IL-4Rα signalling and adaptive immunity, but not the microbiota. Expulsion of H. diminuta was slowed until at least 14 dpi, but not negated, in tuft cell-deficient Pou2f3-/- mice and was accompanied by delayed goblet cell hyperplasia and slowed small bowel transit. Worm antigen and mitogen evoked production of IL-4 and IL-10 by splenocytes from wild-type and Pou2f3-/- mice was not appreciably different, suggesting similar systemic immune reactivity to infection with H. diminuta. Wild-type and Pou2f3-/- mice infected with H. diminuta displayed partial protection against subsequent infection with the nematode Heligmosomoides bakeri. We speculate that, with respect to H. diminuta, enteric tuft cells are important for local immune events driving the rapidity of H. diminuta expulsion but are not critical in initiating or sustaining systemic Th2 responses that provide concomitant immunity against secondary infection with H. bakeri.
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Affiliation(s)
- Sruthi Rajeev
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - ShuHua Li
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - Aralia Leon-Coria
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
- Department of Biology, Faculty of Science, University of Calgary, Calgary, Alberta, Canada
| | - Arthur Wang
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - Lucas Kraemer
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - Susan Joanne Wang
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - Annaliese Boim
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - Kyle Flannigan
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Adam Shute
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
| | - Cristiane H. Baggio
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Blanca E. Callejas
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Wallace K. MacNaughton
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Constance A. M. Finney
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
- Department of Biology, Faculty of Science, University of Calgary, Calgary, Alberta, Canada
| | - Derek M. McKay
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Host-Parasite Interactions Program, University of Calgary, Calgary, Alberta, Canada
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4
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Ren X, Liu Q, Zhou P, Zhou T, Wang D, Mei Q, Flavell RA, Liu Z, Li M, Pan W, Zhu S. DHX9 maintains epithelial homeostasis by restraining R-loop-mediated genomic instability in intestinal stem cells. Nat Commun 2024; 15:3080. [PMID: 38594251 PMCID: PMC11004185 DOI: 10.1038/s41467-024-47235-2] [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: 06/20/2023] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
Epithelial barrier dysfunction and crypt destruction are hallmarks of inflammatory bowel disease (IBD). Intestinal stem cells (ISCs) residing in the crypts play a crucial role in the continuous self-renewal and rapid recovery of intestinal epithelial cells (IECs). However, how ISCs are dysregulated in IBD remains poorly understood. Here, we observe reduced DHX9 protein levels in IBD patients, and mice with conditional DHX9 depletion in the intestinal epithelium (Dhx9ΔIEC) exhibit an increased susceptibility to experimental colitis. Notably, Dhx9ΔIEC mice display a significant reduction in the numbers of ISCs and Paneth cells. Further investigation using ISC-specific or Paneth cell-specific Dhx9-deficient mice demonstrates the involvement of ISC-expressed DHX9 in maintaining epithelial homeostasis. Mechanistically, DHX9 deficiency leads to abnormal R-loop accumulation, resulting in genomic instability and the cGAS-STING-mediated inflammatory response, which together impair ISC function and contribute to the pathogenesis of IBD. Collectively, our findings highlight R-loop-mediated genomic instability in ISCs as a risk factor in IBD.
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Affiliation(s)
- Xingxing Ren
- Hefei National Research Center for Physical Sciences at the Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, 230001, Hefei, China
- Key Laboratory of immune response and immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Department of Gastroenterology, Third Affiliated Hospital of Guangzhou Medical University, 510145, Guangzhou, China
| | - Qiuyuan Liu
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Peirong Zhou
- Department of Gastroenterology, Third Affiliated Hospital of Guangzhou Medical University, 510145, Guangzhou, China
| | - Tingyue Zhou
- Key Laboratory of immune response and immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Decai Wang
- Key Laboratory of immune response and immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Qiao Mei
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Richard A Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Zhanju Liu
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
| | - Mingsong Li
- Department of Gastroenterology, Third Affiliated Hospital of Guangzhou Medical University, 510145, Guangzhou, China.
| | - Wen Pan
- Hefei National Research Center for Physical Sciences at the Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, 230001, Hefei, China.
- Key Laboratory of immune response and immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
| | - Shu Zhu
- Hefei National Research Center for Physical Sciences at the Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, 230001, Hefei, China.
- Key Laboratory of immune response and immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
- School of Data Science, University of Science and Technology of China, Hefei, 230026, China.
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5
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Silverman JB, Vega PN, Tyska MJ, Lau KS. Intestinal Tuft Cells: Morphology, Function, and Implications for Human Health. Annu Rev Physiol 2024; 86:479-504. [PMID: 37863104 PMCID: PMC11193883 DOI: 10.1146/annurev-physiol-042022-030310] [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] [Indexed: 10/22/2023]
Abstract
Tuft cells are a rare and morphologically distinct chemosensory cell type found throughout many organs, including the gastrointestinal tract. These cells were identified by their unique morphologies distinguished by large apical protrusions. Ultrastructural data have begun to describe the molecular underpinnings of their cytoskeletal features, and tuft cell-enriched cytoskeletal proteins have been identified, although the connection of tuft cell morphology to tuft cell functionality has not yet been established. Furthermore, tuft cells display variations in function and identity between and within tissues, leading to the delineation of distinct tuft cell populations. As a chemosensory cell type, they display receptors that are responsive to ligands specific for their environment. While many studies have demonstrated the tuft cell response to protists and helminths in the intestine, recent research has highlighted other roles of tuft cells as well as implicated tuft cells in other disease processes including inflammation, cancer, and viral infections. Here, we review the literature on the cytoskeletal structure of tuft cells. Additionally, we focus on new research discussing tuft cell lineage, ligand-receptor interactions, tuft cell tropism, and the role of tuft cells in intestinal disease. Finally, we discuss the implication of tuft cell-targeted therapies in human health and how the morphology of tuft cells may contribute to their functionality.
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Affiliation(s)
- Jennifer B Silverman
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| | - Paige N Vega
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| | - Matthew J Tyska
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| | - Ken S Lau
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
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6
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Li F, Ling X, Chakraborty S, Fountzilas C, Wang J, Jamroze A, Liu X, Kalinski P, Tang DG. Role of the DEAD-box RNA helicase DDX5 (p68) in cancer DNA repair, immune suppression, cancer metabolic control, virus infection promotion, and human microbiome (microbiota) negative influence. J Exp Clin Cancer Res 2023; 42:213. [PMID: 37596619 PMCID: PMC10439624 DOI: 10.1186/s13046-023-02787-x] [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: 06/20/2023] [Accepted: 08/01/2023] [Indexed: 08/20/2023] Open
Abstract
There is increasing evidence indicating the significant role of DDX5 (also called p68), acting as a master regulator and a potential biomarker and target, in tumorigenesis, proliferation, metastasis and treatment resistance for cancer therapy. However, DDX5 has also been reported to act as an oncosuppressor. These seemingly contradictory observations can be reconciled by DDX5's role in DNA repair. This is because cancer cell apoptosis and malignant transformation can represent the two possible outcomes of a single process regulated by DDX5, reflecting different intensity of DNA damage. Thus, targeting DDX5 could potentially shift cancer cells from a growth-arrested state (necessary for DNA repair) to apoptosis and cell killing. In addition to the increasingly recognized role of DDX5 in global genome stability surveillance and DNA damage repair, DDX5 has been implicated in multiple oncogenic signaling pathways. DDX5 appears to utilize distinct signaling cascades via interactions with unique proteins in different types of tissues/cells to elicit opposing roles (e.g., smooth muscle cells versus cancer cells). Such unique features make DDX5 an intriguing therapeutic target for the treatment of human cancers, with limited low toxicity to normal tissues. In this review, we discuss the multifaceted functions of DDX5 in DNA repair in cancer, immune suppression, oncogenic metabolic rewiring, virus infection promotion, and negative impact on the human microbiome (microbiota). We also provide new data showing that FL118, a molecular glue DDX5 degrader, selectively works against current treatment-resistant prostate cancer organoids/cells. Altogether, current studies demonstrate that DDX5 may represent a unique oncotarget for effectively conquering cancer with minimal toxicity to normal tissues.
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Affiliation(s)
- Fengzhi Li
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA.
- Program of Developmental Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA.
| | - Xiang Ling
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
- Canget BioTekpharma LLC, Buffalo, NY, 14203, USA
| | - Sayan Chakraborty
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
- Program of Developmental Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
| | - Christos Fountzilas
- Program of Developmental Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
| | - Jianmin Wang
- Department of Bioinformatics & Biostatistics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
| | - Anmbreen Jamroze
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Xiaozhuo Liu
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Pawel Kalinski
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
- Program of Tumor Immunology & Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
| | - Dean G Tang
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
- Program of Developmental Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA
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7
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Yao J, Cai Y, Chen Z, Wang X, Lai X, Pan L, Li Y, Wang S. Dhx15 regulates zebrafish intestinal development through the Wnt signaling pathway. Genomics 2023; 115:110578. [PMID: 36775210 DOI: 10.1016/j.ygeno.2023.110578] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
DEAH-box helicase 15 (DHX15) is ATP-dependent RNA helicase which is known for its role in RNA metabolism. Recent studies reported DHX15 involves in the intestinal immunity. However, the role of DHX15 (or RNA helicase) in intestinal development is poorly understood. Here, we revealed an unidentified role for dhx15 in regulating zebrafish intestinal development. We found the profound intestinal defects in dhx15 knockout zebrafish. Decreased proliferation and increased apoptosis of the intestine cells were observed when dhx15 were deleted. Further RNA genome wide analysis and qRT-PCR analysis showed the Wnt signaling pathway is down-regulated in the dhx15 knockout zebrafish. Thus, we concluded that dhx15 regulates zebrafish intestinal development through the Wnt signaling pathway. Here, we provided new insights into the role of dhx15 in intestinal development beyond its well-characterized role in intestinal immunity.
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Affiliation(s)
- Jinpeng Yao
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China
| | - Yuanhua Cai
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China; Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Zhixiang Chen
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China
| | - Xuechun Wang
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China
| | - Xiaolin Lai
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China; Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Lili Pan
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China; Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yang Li
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China; Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Shaoyuan Wang
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou, China; Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China.
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8
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Ma S, Yang Q, Chen N, Zheng A, Abbasi N, Wang G, Patel PR, Cho BS, Yee BA, Zhang L, Chu H, Evans SM, Yeo GW, Zheng Y, Huang WJM. RNA binding protein DDX5 restricts RORγt + T reg suppressor function to promote intestine inflammation. SCIENCE ADVANCES 2023; 9:eadd6165. [PMID: 36724232 PMCID: PMC9891705 DOI: 10.1126/sciadv.add6165] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 01/05/2023] [Indexed: 06/18/2023]
Abstract
Retinoid-related orphan receptor (RAR) gamma (RORγt)-expressing regulatory T cells (RORγt+ Tregs) play pivotal roles in preventing T cell hyperactivation and maintaining tissue homeostasis, in part by secreting the anti-inflammation cytokine interleukin-10 (IL-10). Here, we report that hypoxia-induced factor 1α (HIF1α) is the master transcription factor for Il10 in RORγt+ Tregs. This critical anti-inflammatory pathway is negatively regulated by an RNA binding protein DEAD box helicase 5 (DDX5). As a transcriptional corepressor, DDX5 restricts the expression of HIF1α and its downstream target gene Il10 in RORγt+ Tregs. T cell-specific Ddx5 knockout (DDX5ΔT) mice have augmented RORγt+ Treg suppressor activities and are better protected from intestinal inflammation. Genetic ablation or pharmacologic inhibition of HIF1α restores enteropathy susceptibility in DDX5ΔT mice. The DDX5-HIF1α-IL-10 pathway is conserved in mice and humans. These findings reveal potential therapeutic targets for intestinal inflammatory diseases.
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Affiliation(s)
- Shengyun Ma
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Qiyuan Yang
- NOMIS Center for Immunobiology and Microbial Pathogenesis, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Nicholas Chen
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Anna Zheng
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Nazia Abbasi
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Gaowei Wang
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Parth R. Patel
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Benjamin S. Cho
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Brian A. Yee
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Lunfeng Zhang
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California San Diego, La Jolla, CA, USA
| | - Hiutung Chu
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
- Chiba University–UC San Diego Center for Mucosal Immunology, Allergy, and Vaccines (cMAV), University of California San Diego, La Jolla, CA, USA
| | - Sylvia M. Evans
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California San Diego, La Jolla, CA, USA
- Department of Pharmacology, University of California San Diego, La Jolla, CA, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Gene W. Yeo
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Ye Zheng
- NOMIS Center for Immunobiology and Microbial Pathogenesis, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Wendy Jia Men Huang
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
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9
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Kotas ME, O'Leary CE, Locksley RM. Tuft Cells: Context- and Tissue-Specific Programming for a Conserved Cell Lineage. ANNUAL REVIEW OF PATHOLOGY 2023; 18:311-335. [PMID: 36351364 PMCID: PMC10443898 DOI: 10.1146/annurev-pathol-042320-112212] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Tuft cells are found in tissues with distinct stem cell compartments, tissue architecture, and luminal exposures but converge on a shared transcriptional program, including expression of taste transduction signaling pathways. Here, we summarize seminal and recent findings on tuft cells, focusing on major categories of function-instigation of type 2 cytokine responses, orchestration of antimicrobial responses, and emerging roles in tissue repair-and describe tuft cell-derived molecules used to affect these functional programs. We review what is known about the development of tuft cells from epithelial progenitors under homeostatic conditions and during disease. Finally, we discuss evidence that immature, or nascent, tuft cells with potential for diverse functions are driven toward dominant effector programs by tissue- or perturbation-specific contextual cues, which may result in heterogeneous mature tuft cell phenotypes both within and between tissues.
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Affiliation(s)
- Maya E Kotas
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California, San Francisco, California, USA
- Department of Medicine, University of California, San Francisco, California, USA
| | - Claire E O'Leary
- Department of Medicine, University of California, San Francisco, California, USA
- Current affiliation: Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Richard M Locksley
- Department of Medicine, University of California, San Francisco, California, USA
- Department of Microbiology and Immunology, University of California, San Francisco, California, USA;
- Howard Hughes Medical Institute, University of California, San Francisco, California, USA
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Dong ML, Wen X, He X, Ren JH, Yu HB, Qin YP, Yang Z, Yang ML, Zhou CY, Zhang H, Cheng ST, Chen J. HBx Mediated Increase of DDX17 Contributes to HBV-Related Hepatocellular Carcinoma Tumorigenesis. Front Immunol 2022; 13:871558. [PMID: 35784274 PMCID: PMC9243429 DOI: 10.3389/fimmu.2022.871558] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
HBV is strongly associated with HCC development and DEAD-box RNA helicase 17 (DDX17) is a very important member of the DEAD box family that plays key roles in HCC development by promoting cancer metastasis. However, the important role of DDX17 in the pathogenesis of HBV-related HCC remains unclear. In this study, we investigated the role of DDX17 in the replication of HBV and the development of HBV-associated HCC. Based on data from the GEO database and HBV-infected cells, we found that DDX17 was upregulated by the HBV viral protein X (HBx). Mechanistically, increased DDX17 expression promoted HBV replication and transcription by upregulating ZWINT. Further study showed that DDX17 could promote HBx-mediated HCC metastasis. Finally, the promotive effect of DDX17 on HBV and HBV-related HCC was confirmed in vivo. In summary, the results revealed the novel role of DDX17 in the replication of HBV and the metastasis of HBV-associated HCC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Juan Chen
- *Correspondence: Juan Chen, ; Sheng-Tao Cheng,
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