1
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Kan C, Tan Z, Liu L, Liu B, Zhan L, Zhu J, Li X, Lin K, Liu J, Liu Y, Yang F, Wong M, Wang S, Zheng H. Phase separation of SHP2E76K promotes malignant transformation of mesenchymal stem cells by activating mitochondrial complexes. JCI Insight 2024; 9:e170340. [PMID: 38451719 DOI: 10.1172/jci.insight.170340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 03/05/2024] [Indexed: 03/09/2024] Open
Abstract
Mesenchymal stem cells (MSCs), suffering from diverse gene hits, undergo malignant transformation and aberrant osteochondral differentiation. Src homology region 2-containing protein tyrosine phosphatase 2 (SHP2), a nonreceptor protein tyrosine phosphatase, regulates multicellular differentiation, proliferation, and transformation. However, the role of SHP2 in MSC fate determination remains unclear. Here, we showed that MSCs bearing the activating SHP2E76K mutation underwent malignant transformation into sarcoma stem-like cells. We revealed that the SHP2E76K mutation in mouse MSCs led to hyperactive mitochondrial metabolism by activating mitochondrial complexes I and III. Inhibition of complexes I and III prevented hyperactive mitochondrial metabolism and malignant transformation of SHP2E76K MSCs. Mechanistically, we verified that SHP2 underwent liquid-liquid phase separation (LLPS) in SHP2E76K MSCs. SHP2 LLPS led to its dissociation from complexes I and III, causing their hyperactivation. Blockade of SHP2 LLPS by LLPS-defective mutations or allosteric inhibitors suppressed complex I and III hyperactivation as well as malignant transformation of SHP2E76K MSCs. These findings reveal that complex I and III hyperactivation driven by SHP2 LLPS promotes malignant transformation of SHP2E76K MSCs and suggest that inhibition of SHP2 LLPS could be a potential therapeutic target for the treatment of activated SHP2-associated cancers.
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Affiliation(s)
- Chen Kan
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Zhenya Tan
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Liwei Liu
- Department of Pathogen Biology and Immunology, School of Medical Technology, Anhui Medical College, Hefei, China
| | - Bo Liu
- Department of Cell Center, 901st Hospital of PLA Joint Logistic Support Force, Anhui, Hefei, China
| | - Li Zhan
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Jicheng Zhu
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Xiaofei Li
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Keqiong Lin
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Jia Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Yakun Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Fan Yang
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Mandy Wong
- Department of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Siying Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
| | - Hong Zheng
- Department of Pathophysiology, School of Basic Medical Sciences, Stem Cell Regeneration Research Center, Anhui Medical University, Hefei, China
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2
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Arnhold V, Chang WY, Jansen SA, Thangavelu G, Calafiore M, Vinci P, Fu YY, Ito T, Takashima S, Egorova A, Kuttiyara J, Perlstein A, van Hoesel M, Liu C, Blazar BR, Lindemans CA, Hanash AM. Corticosteroids impair epithelial regeneration in immune-mediated intestinal damage. J Clin Invest 2024; 134:e155880. [PMID: 38349762 PMCID: PMC10977993 DOI: 10.1172/jci155880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 02/06/2024] [Indexed: 02/23/2024] Open
Abstract
Corticosteroid treatment (CST) failure is associated with poor outcomes for patients with gastrointestinal (GI) graft-versus-host disease (GVHD). CST is intended to target the immune system, but the glucocorticoid receptor (GR) is widely expressed, including within the intestines, where its effects are poorly understood. Here, we report that corticosteroids (CS) directly targeted intestinal epithelium, potentially worsening immune-mediated GI damage. CS administered to mice in vivo and intestinal organoid cultures ex vivo reduced epithelial proliferation. Following irradiation, immediate CST mitigated GI damage but delayed treatment attenuated regeneration and exacerbated damage. In a murine steroid-refractory (SR) GVHD model, CST impaired epithelial regeneration, worsened crypt loss, and reduced intestinal stem cell (ISC) frequencies. CST also exacerbated immune-mediated damage in organoid cultures with SR, GR-deficient T cells or IFN-γ. These findings correlated with CS-dependent changes in apoptosis-related gene expression and STAT3-related epithelial proliferation. Conversely, IL-22 administration enhanced STAT3 activity and overcame CS-mediated attenuation of regeneration, reducing crypt loss and promoting ISC expansion in steroid-treated mice with GVHD. Therefore, CST has the potential to exacerbate GI damage if it fails to control the damage-inducing immune response, but this risk may be countered by strategies augmenting epithelial regeneration, thus providing a rationale for clinical approaches combining such tissue-targeted therapies with immunosuppression.
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Affiliation(s)
- Viktor Arnhold
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Winston Y. Chang
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
- Immunology and Microbial Pathogenesis Graduate Program, Weill Cornell Medical College, New York, New York, USA
| | - Suze A. Jansen
- Division of Pediatrics, Regenerative Medicine Center, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, Netherlands
- Department of Stem Cell Transplantation, Princess Maximá Center for Pediatric Oncology, Utrecht, Netherlands
| | - Govindarajan Thangavelu
- Department of Pediatrics, Division of Blood and Marrow Transplant and Cellular Therapy, University of Minnesota, Minneapolis, Minnesota, USA
| | - Marco Calafiore
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Paola Vinci
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ya-Yuan Fu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Takahiro Ito
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Shuichiro Takashima
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
- Department of Hematology, NHO Kyushu Medical Center, Fukuoka, Fukuoka, Japan
| | - Anastasiya Egorova
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Jason Kuttiyara
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Adam Perlstein
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Marliek van Hoesel
- Division of Pediatrics, Regenerative Medicine Center, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, Netherlands
- Department of Stem Cell Transplantation, Princess Maximá Center for Pediatric Oncology, Utrecht, Netherlands
| | - Chen Liu
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Bruce R. Blazar
- Department of Pediatrics, Division of Blood and Marrow Transplant and Cellular Therapy, University of Minnesota, Minneapolis, Minnesota, USA
| | - Caroline A. Lindemans
- Division of Pediatrics, Regenerative Medicine Center, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, Netherlands
- Department of Stem Cell Transplantation, Princess Maximá Center for Pediatric Oncology, Utrecht, Netherlands
| | - Alan M. Hanash
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
- Immunology and Microbial Pathogenesis Graduate Program, Weill Cornell Medical College, New York, New York, USA
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, and Department of Medicine, Weill Cornell Medical College, New York, New York, USA
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3
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DiGiovanni GT, Han W, Sherrill TP, Taylor CJ, Nichols DS, Geis NM, Singha UK, Calvi CL, McCall AS, Dixon MM, Liu Y, Jang JH, Gutor SS, Polosukhin VV, Blackwell TS, Kropski JA, Gokey JJ. Epithelial Yap/Taz are required for functional alveolar regeneration following acute lung injury. JCI Insight 2023; 8:e173374. [PMID: 37676731 PMCID: PMC10629815 DOI: 10.1172/jci.insight.173374] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023] Open
Abstract
A hallmark of idiopathic pulmonary fibrosis (IPF) and other interstitial lung diseases is dysregulated repair of the alveolar epithelium. The Hippo pathway effector transcription factors YAP and TAZ are implicated as essential for type 1 and type 2 alveolar epithelial cell (AT1 and AT2) differentiation in the developing lung, yet aberrant activation of YAP/TAZ is a prominent feature of the dysregulated alveolar epithelium in IPF. In these studies, we sought to define the functional role of YAP/TAZ activity during alveolar regeneration. We demonstrated that Yap and Taz were normally activated in AT2 cells shortly after injury, and deletion of Yap/Taz in AT2 cells led to pathologic alveolar remodeling, failure of AT2-to-AT1 cell differentiation, increased collagen deposition, exaggerated neutrophilic inflammation, and increased mortality following injury induced by a single dose of bleomycin. Loss of Yap/Taz activity prior to an LPS injury prevented AT1 cell regeneration, led to intraalveolar collagen deposition, and resulted in persistent innate inflammation. These findings establish that AT2 cell Yap/Taz activity is essential for functional alveolar epithelial repair and prevention of fibrotic remodeling.
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Affiliation(s)
- Gianluca T. DiGiovanni
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Wei Han
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Taylor P. Sherrill
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Chase J. Taylor
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - David S. Nichols
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Natalie M. Geis
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Ujjal K. Singha
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Carla L. Calvi
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - A. Scott McCall
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Molly M. Dixon
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Yang Liu
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Ji-Hoon Jang
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Sergey S. Gutor
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Vasiliy V. Polosukhin
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Timothy S. Blackwell
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee, USA
- Department of Veterans Affairs Medical Center, Nashville, Tennessee, USA
| | - Jonathan A. Kropski
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee, USA
- Department of Veterans Affairs Medical Center, Nashville, Tennessee, USA
| | - Jason J. Gokey
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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4
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Li JY, Gillilland M, Lee AA, Wu X, Zhou SY, Owyang C. Secondary bile acids mediate high-fat diet-induced upregulation of R-spondin 3 and intestinal epithelial proliferation. JCI Insight 2022; 7:e148309. [PMID: 36099053 PMCID: PMC9675439 DOI: 10.1172/jci.insight.148309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 08/31/2022] [Indexed: 11/17/2022] Open
Abstract
A high-fat diet (HFD) contributes to the increased incidence of colorectal cancer, but the mechanisms are unclear. We found that R-spondin 3 (Rspo3), a ligand for leucine-rich, repeat-containing GPCR 4 and 5 (LGR4 and LGR5), was the main subtype of R-spondins and was produced by myofibroblasts beneath the crypts in the intestine. HFD upregulated colonic Rspo3, LGR4, LGR5, and β-catenin gene expression in specific pathogen-free rodents, but not in germ-free mice, and the upregulations were prevented by the bile acid (BA) binder cholestyramine or antibiotic treatment, indicating mediation by both BA and gut microbiota. Cholestyramine or antibiotic treatments prevented HFD-induced enrichment of members of the Lachnospiraceae and Rumincoccaceae, which can transform primary BA into secondary BA. Oral administration of deoxycholic acid (DCA), or inoculation of a combination of the BA deconjugator Lactobacillus plantarum and 7α-dehydroxylase-containing Clostridium scindens with an HFD to germ-free mice increased serum DCA and colonic Rspo3 mRNA levels, indicating that formation of secondary BA by gut microbiota is responsible for HFD-induced upregulation of Rspo3. In primary myofibroblasts, DCA increased Rspo3 mRNA via TGR5. Finally, we showed that cholestyramine or conditional deletion of Rspo3 prevented HFD- or DCA-induced intestinal proliferation. We conclude that secondary BA is responsible for HFD-induced upregulation of Rspo3, which, in turn, mediates HFD-induced intestinal epithelial proliferation.
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5
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Bianchi A, Mozzetta C, Pegoli G, Lucini F, Valsoni S, Rosti V, Petrini C, Cortesi A, Gregoretti F, Antonelli L, Oliva G, De Bardi M, Rizzi R, Bodega B, Pasini D, Ferrari F, Bearzi C, Lanzuolo C. Dysfunctional polycomb transcriptional repression contributes to lamin A/C-dependent muscular dystrophy. J Clin Invest 2021; 130:2408-2421. [PMID: 31999646 DOI: 10.1172/jci128161] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 01/22/2020] [Indexed: 12/25/2022] Open
Abstract
Lamin A is a component of the inner nuclear membrane that, together with epigenetic factors, organizes the genome in higher order structures required for transcriptional control. Mutations in the lamin A/C gene cause several diseases belonging to the class of laminopathies, including muscular dystrophies. Nevertheless, molecular mechanisms involved in the pathogenesis of lamin A-dependent dystrophies are still largely unknown. The polycomb group (PcG) of proteins are epigenetic repressors and lamin A interactors, primarily involved in the maintenance of cell identity. Using a murine model of Emery-Dreifuss muscular dystrophy (EDMD), we show here that lamin A loss deregulated PcG positioning in muscle satellite stem cells, leading to derepression of non-muscle-specific genes and p16INK4a, a senescence driver encoded in the Cdkn2a locus. This aberrant transcriptional program caused impairment in self-renewal, loss of cell identity, and premature exhaustion of the quiescent satellite cell pool. Genetic ablation of the Cdkn2a locus restored muscle stem cell properties in lamin A/C-null dystrophic mice. Our findings establish a direct link between lamin A and PcG epigenetic silencing and indicate that lamin A-dependent muscular dystrophy can be ascribed to intrinsic epigenetic dysfunctions of muscle stem cells.
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Affiliation(s)
- Andrea Bianchi
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy.,Institute of Cell Biology and Neurobiology, National Research Council (CNR), Rome, Italy
| | - Chiara Mozzetta
- Institute of Cell Biology and Neurobiology, National Research Council (CNR), Rome, Italy
| | - Gloria Pegoli
- Santa Lucia Foundation, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Rome, Italy
| | - Federica Lucini
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy
| | - Sara Valsoni
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy.,Santa Lucia Foundation, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Rome, Italy
| | | | | | - Alice Cortesi
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy
| | | | - Laura Antonelli
- Institute for High Performance Computing and Networking, CNR, Naples, Italy
| | - Gennaro Oliva
- Institute for High Performance Computing and Networking, CNR, Naples, Italy
| | - Marco De Bardi
- Santa Lucia Foundation, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Rome, Italy
| | - Roberto Rizzi
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy.,Institute of Biomedical Technologies, CNR, Milan, Italy
| | - Beatrice Bodega
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy
| | - Diego Pasini
- IEO European Institute of Oncology IRCCS, Department of Experimental Oncology, Milan, Italy.,Department of Health Sciences, University of Milan, Milan, Italy
| | - Francesco Ferrari
- IFOM, the FIRC Institute of Molecular Oncology, Milan, Italy.,Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza," CNR, Pavia, Italy
| | - Claudia Bearzi
- Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi," Milan, Italy.,Institute of Biochemistry and Cell Biology, CNR, Rome, Italy
| | - Chiara Lanzuolo
- Santa Lucia Foundation, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Rome, Italy.,Institute of Biomedical Technologies, CNR, Milan, Italy
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6
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Song K, Qing Y, Guo Q, Peden EK, Chen C, Mitch WE, Truong L, Cheng J. PDGFRA in vascular adventitial MSCs promotes neointima formation in arteriovenous fistula in chronic kidney disease. JCI Insight 2020; 5:137298. [PMID: 33001865 PMCID: PMC7710276 DOI: 10.1172/jci.insight.137298] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 09/24/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic kidney disease (CKD) induces the failure of arteriovenous fistulas (AVFs) and promotes the differentiation of vascular adventitial GLI1-positive mesenchymal stem cells (GMCs). However, the roles of GMCs in forming neointima in AVFs remain unknown. GMCs isolated from CKD mice showed increased potential capacity of differentiation into myofibroblast-like cells. Increased activation of expression of PDGFRA and hedgehog (HH) signaling were detected in adventitial cells of AVFs from patients with end-stage kidney disease and CKD mice. PDGFRA was translocated and accumulated in early endosome when sonic hedgehog was overexpressed. In endosome, PDGFRA-mediated activation of TGFB1/SMAD signaling promoted the differentiation of GMCs into myofibroblasts, extracellular matrix deposition, and vascular fibrosis. These responses resulted in neointima formation and AVF failure. KO of Pdgfra or inhibition of HH signaling in GMCs suppressed the differentiation of GMCs into myofibroblasts. In vivo, specific KO of Pdgfra inhibited GMC activation and vascular fibrosis, resulting in suppression of neointima formation and improvement of AVF patency despite CKD. Our findings could yield strategies for maintaining AVF functions.
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Affiliation(s)
- Ke Song
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Ying Qing
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Qunying Guo
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Eric K Peden
- Department of Vascular Surgery, DeBakey Heart and Vascular Institute, Houston Methodist Hospital, Houston, Texas, USA
| | - Changyi Chen
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas, USA
| | - William E Mitch
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Luan Truong
- Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas, USA
| | - Jizhong Cheng
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
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Jiang Z, Zhou J, Qin X, Zheng H, Gao B, Liu X, Jin G, Zhou Z. MT1-MMP deficiency leads to defective ependymal cell maturation, impaired ciliogenesis, and hydrocephalus. JCI Insight 2020; 5:132782. [PMID: 32229724 DOI: 10.1172/jci.insight.132782] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 03/26/2020] [Indexed: 01/02/2023] Open
Abstract
Hydrocephalus is characterized by abnormal accumulation of cerebrospinal fluid (CSF) in the ventricular cavity. The circulation of CSF in brain ventricles is controlled by the coordinated beating of motile cilia at the surface of ependymal cells (ECs). Here, we show that MT1-MMP is highly expressed in olfactory bulb, rostral migratory stream, and the ventricular system. Mice deficient for membrane-type 1-MMP (MT1-MMP) developed typical phenotypes observed in hydrocephalus, such as dome-shaped skulls, dilated ventricles, corpus callosum agenesis, and astrocyte hypertrophy, during the first 2 weeks of postnatal development. MT1-MMP-deficient mice exhibited reduced and disorganized motile cilia with the impaired maturation of ECs, leading to abnormal CSF flow. Consistent with the defects in motile cilia morphogenesis, the expression of promulticiliogenic genes was significantly decreased, with a concomitant hyperactivation of Notch signaling in the walls of lateral ventricles in Mmp14-/- brains. Inhibition of Notch signaling by γ-secretase inhibitor restored ciliogenesis in Mmp14-/- ECs. Taken together, these data suggest that MT1-MMP is required for ciliogenesis and EC maturation through suppression of Notch signaling during early brain development. Our findings indicate that MT1-MMP is critical for early brain development and loss of MT1-MMP activity gives rise to hydrocephalus.
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Affiliation(s)
- Zhixin Jiang
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China.,Shenzhen Institute of Innovation and Research, University of Hong Kong, Shenzhen, China
| | - Jin Zhou
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China.,Shenzhen Institute of Innovation and Research, University of Hong Kong, Shenzhen, China
| | - Xin Qin
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China.,Shenzhen Institute of Innovation and Research, University of Hong Kong, Shenzhen, China
| | - Huiling Zheng
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China.,Institute for Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Bo Gao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | - Xinguang Liu
- Institute for Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Guoxiang Jin
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhongjun Zhou
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China.,Shenzhen Institute of Innovation and Research, University of Hong Kong, Shenzhen, China
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8
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Mendelson A, Strat AN, Bao W, Rosston P, Fallon G, Ohrn S, Zhong H, Lobo C, An X, Yazdanbakhsh K. Mesenchymal stromal cells lower platelet activation and assist in platelet formation in vitro. JCI Insight 2019; 4:126982. [PMID: 31434805 DOI: 10.1172/jci.insight.126982] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 07/23/2019] [Indexed: 01/01/2023] Open
Abstract
The complex process of platelet formation originates with the hematopoietic stem cell, which differentiates through the myeloid lineage, matures, and releases proplatelets into the BM sinusoids. How formed platelets maintain a low basal activation state in the circulation remains unknown. We identify Lepr+ stromal cells lining the BM sinusoids as important contributors to sustaining low platelet activation. Ablation of murine Lepr+ cells led to a decreased number of platelets in the circulation with an increased activation state. We developed a potentially novel culture system for supporting platelet formation in vitro using a unique population of CD51+PDGFRα+ perivascular cells, derived from human umbilical cord tissue, which display numerous mesenchymal stem cell (MSC) properties. Megakaryocytes cocultured with MSCs had altered LAT and Rap1b gene expression, yielding platelets that are functional with low basal activation levels, a critical consideration for developing a transfusion product. Identification of a regulatory cell that maintains low baseline platelet activation during thrombopoiesis opens up new avenues for improving blood product production ex vivo.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Xiuli An
- Laboratory of Membrane Biology, New York Blood Center (NYBC), New York, New York, USA
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9
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Kellner J, Wallace C, Liu B, Li Z. Definition of a multiple myeloma progenitor population in mice driven by enforced expression of XBP1s. JCI Insight 2019; 4:124698. [PMID: 30944260 DOI: 10.1172/jci.insight.124698] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 02/19/2019] [Indexed: 12/20/2022] Open
Abstract
Multiple myeloma (MM) is an incurable plasma cell malignancy with frequent treatment failures and relapses, suggesting the existence of pathogenic myeloma stem/progenitor populations. However, the identity of MM stem cells remains elusive. We used a murine model of MM with transgenic overexpression of the unfolded protein response sensor X-box binding protein 1 (XBP1s) in the B cell compartment to define MM stem cells. We herein report that a post-germinal center, pre-plasma cell population significantly expands as MM develops. This population has the following characteristics: (a) cell surface phenotype of B220+CD19+IgM-IgD-CD138-CD80+sIgG-AA4.1+FSChi; (b) high expression levels of Pax5 and Bcl6 with intermediate levels of Blimp1 and XBP1s; (c) increased expression of aldehyde dehydrogenase, Notch1, and c-Kit; and (d) ability to efficiently reconstitute antibody-producing capacity in B cell-deficient mice in vivo. We thus have defined a plasma cell progenitor population that resembles myeloma stem cells in mice. These results provide potentially novel insights into MM stem cell biology and may contribute to the development of novel stem cell-targeted therapies for the eradication of MM.
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Affiliation(s)
| | | | - Bei Liu
- Department of Microbiology and Immunology and.,Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Zihai Li
- Department of Microbiology and Immunology and.,Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA.,First Affiliated Hospital, Zhengzhou University School of Medicine, Zhengzhou, China
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10
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Kabiri Z, Greicius G, Zaribafzadeh H, Hemmerich A, Counter CM, Virshup DM. Wnt signaling suppresses MAPK-driven proliferation of intestinal stem cells. J Clin Invest 2018; 128:3806-3812. [PMID: 30059017 DOI: 10.1172/jci99325] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 06/12/2018] [Indexed: 12/23/2022] Open
Abstract
Intestinal homeostasis depends on a slowly proliferating stem cell compartment in crypt cells, followed by rapid proliferation of committed progenitor cells in the transit amplifying (TA) compartment. The balance between proliferation and differentiation in intestinal stem cells (ISCs) is regulated by Wnt/β-catenin signaling, although the mechanism remains unclear. We previously targeted PORCN, an enzyme essential for all Wnt secretion, and demonstrated that stromal production of Wnts was required for intestinal homeostasis. Here, a PORCN inhibitor was used to acutely suppress Wnt signaling. Unexpectedly, the treatment induced an initial burst of proliferation in the stem cell compartment of the small intestine, due to conversion of ISCs into TA cells with a loss of intrinsic ISC self-renewal. This process involved MAPK pathway activation, as the proliferating cells in the base of the intestinal crypt contained phosphorylated ERK1/2, and a MEK inhibitor attenuated the proliferation of ISCs and their differentiation into TA cells. These findings suggest a role for Wnt signaling in suppressing the MAPK pathway at the crypt base to maintain a pool of ISCs. The interaction between Wnt and MAPK pathways in vivo has potential therapeutic applications in cancer and regenerative medicine.
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Affiliation(s)
- Zahra Kabiri
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
| | - Gediminas Greicius
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore
| | - Hamed Zaribafzadeh
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
| | - Amanda Hemmerich
- Department of Pathology, Duke University Medical Center, Durham, North Carolina, USA
| | - Christopher M Counter
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA.,Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, USA
| | - David M Virshup
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore.,Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
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11
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Atkinson PJ, Dong Y, Gu S, Liu W, Najarro EH, Udagawa T, Cheng AG. Sox2 haploinsufficiency primes regeneration and Wnt responsiveness in the mouse cochlea. J Clin Invest 2018; 128:1641-1656. [PMID: 29553487 DOI: 10.1172/jci97248] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 02/01/2018] [Indexed: 12/31/2022] Open
Abstract
During development, Sox2 is indispensable for cell division and differentiation, yet its roles in regenerating tissues are less clear. Here, we used combinations of transgenic mouse models to reveal that Sox2 haploinsufficiency (Sox2haplo) increases rather than impairs cochlear regeneration in vivo. Sox2haplo cochleae had delayed terminal mitosis and ectopic sensory cells, yet normal auditory function. Sox2haplo amplified and expanded domains of damage-induced Atoh1+ transitional cell formation in neonatal cochlea. Wnt activation via β-catenin stabilization (β-cateninGOF) alone failed to induce proliferation or transitional cell formation. By contrast, β-cateninGOF caused proliferation when either Sox2haplo or damage was present, and transitional cell formation when both were present in neonatal, but not mature, cochlea. Mechanistically, Sox2haplo or damaged neonatal cochleae showed lower levels of Sox2 and Hes5, but not of Wnt target genes. Together, our study unveils an interplay between Sox2 and damage in directing tissue regeneration and Wnt responsiveness and thus provides a foundation for potential combinatorial therapies aimed at stimulating mammalian cochlear regeneration to reverse hearing loss in humans.
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Affiliation(s)
- Patrick J Atkinson
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Yaodong Dong
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA.,Department of Otology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shuping Gu
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Wenwen Liu
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Elvis Huarcaya Najarro
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Tomokatsu Udagawa
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Alan G Cheng
- Department of Otolaryngology - Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
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