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Sampei C, Kato K, Arasaki Y, Kimura Y, Konno T, Otsuka K, Kohara Y, Noda M, Ezura Y, Hayata T. Gprc5a is a novel parathyroid hormone-inducible gene and negatively regulates osteoblast proliferation and differentiation. J Cell Physiol 2024; 239:e31297. [PMID: 38769895 DOI: 10.1002/jcp.31297] [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: 09/05/2023] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/22/2024]
Abstract
Teriparatide is a peptide derived from a parathyroid hormone (PTH) and an osteoporosis therapeutic drug with potent bone formation-promoting activity. To identify novel druggable genes that act downstream of PTH signaling and are potentially involved in bone formation, we screened PTH target genes in mouse osteoblast-like MC3T3-E1 cells. Here we show that Gprc5a, encoding an orphan G protein-coupled receptor, is a novel PTH-inducible gene and negatively regulates osteoblast proliferation and differentiation. PTH treatment induced Gprc5a expression in MC3T3-E1 cells, rat osteosarcoma ROS17/2.8 cells, and mouse femurs. Induction of Gprc5a expression by PTH occurred in the absence of protein synthesis and was mediated primarily via the cAMP pathway, suggesting that Gprc5a is a direct target of PTH signaling. Interestingly, Gprc5a expression was induced additively by co-treatment with PTH and 1α, 25-dihydroxyvitamin D3 (calcitriol), or retinoic acid in MC3T3-E1 cells. Reporter analysis of a 1 kb fragment of human GPRC5A promoter revealed that the promoter fragment showed responsiveness to PTH via the cAMP response element, suggesting that GPRC5A is also a PTH-inducible gene in humans. Gprc5a knockdown promoted cell viability and proliferation, as demonstrated by MTT and BrdU assays. Gprc5a knockdown also promoted osteoblast differentiation, as indicated by gene expression analysis and mineralization assay. Mechanistic studies showed that Gprc5a interacted with BMPR1A and suppressed BMP signaling induced by BMP-2 and constitutively active BMP receptors, ALK2 (ACVR1) Q207D and ALK3 (BMPR1A) Q233D. Thus, our results suggest that Gprc5a is a novel gene induced by PTH that acts in an inhibitory manner on both cell proliferation and osteoblast differentiation and is a candidate for drug targets for osteoporosis.
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Affiliation(s)
- Chisato Sampei
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Kosuke Kato
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Yasuhiro Arasaki
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Yuta Kimura
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Takuto Konno
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Kanon Otsuka
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Yukihiro Kohara
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
| | - Masaki Noda
- Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yoichi Ezura
- Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
- Department of Occupational Therapy, Faculty of Health and Medical Science, Teikyo Heisei University, Toshima-ku, Japan
| | - Tadayoshi Hayata
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences and Faculty of Pharmaceutical Science, Tokyo University of Science, Noda, Chiba, Japan
- Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan
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2
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Kinghorn K, Gill A, Marvin A, Li R, Quigley K, Singh S, Gore MT, le Noble F, Gabhann FM, Bautch VL. A defined clathrin-mediated trafficking pathway regulates sFLT1/VEGFR1 secretion from endothelial cells. Angiogenesis 2024; 27:67-89. [PMID: 37695358 PMCID: PMC10881643 DOI: 10.1007/s10456-023-09893-6] [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: 01/24/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023]
Abstract
FLT1/VEGFR1 negatively regulates VEGF-A signaling and is required for proper vessel morphogenesis during vascular development and vessel homeostasis. Although a soluble isoform, sFLT1, is often mis-regulated in disease and aging, how sFLT1 is trafficked and secreted from endothelial cells is not well understood. Here we define requirements for constitutive sFLT1 trafficking and secretion in endothelial cells from the Golgi to the plasma membrane, and we show that sFLT1 secretion requires clathrin at or near the Golgi. Perturbations that affect sFLT1 trafficking blunted endothelial cell secretion and promoted intracellular mis-localization in cells and zebrafish embryos. siRNA-mediated depletion of specific trafficking components revealed requirements for RAB27A, VAMP3, and STX3 for post-Golgi vesicle trafficking and sFLT1 secretion, while STX6, ARF1, and AP1 were required at the Golgi. Live-imaging of temporally controlled sFLT1 release from the endoplasmic reticulum showed clathrin-dependent sFLT1 trafficking at the Golgi into secretory vesicles that then trafficked to the plasma membrane. Depletion of STX6 altered vessel sprouting in 3D, suggesting that endothelial cell sFLT1 secretion influences proper vessel sprouting. Thus, specific trafficking components provide a secretory path from the Golgi to the plasma membrane for sFLT1 in endothelial cells that utilizes a specialized clathrin-dependent intermediate, suggesting novel therapeutic targets.
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Affiliation(s)
- Karina Kinghorn
- Curriculum in Cell Biology and Physiology, University of North Carolina, Chapel Hill, NC, USA
| | - Amy Gill
- Department of Biomedical Engineering, Institute for Computational Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Allison Marvin
- Department of Biology, The University of North Carolina at Chapel Hill, CB No. 3280, Chapel Hill, NC, 27599, USA
| | - Renee Li
- Department of Biology, The University of North Carolina at Chapel Hill, CB No. 3280, Chapel Hill, NC, 27599, USA
| | - Kaitlyn Quigley
- Department of Biology, The University of North Carolina at Chapel Hill, CB No. 3280, Chapel Hill, NC, 27599, USA
| | - Simcha Singh
- Department of Biology, The University of North Carolina at Chapel Hill, CB No. 3280, Chapel Hill, NC, 27599, USA
| | - Michaelanthony T Gore
- Department of Biology, The University of North Carolina at Chapel Hill, CB No. 3280, Chapel Hill, NC, 27599, USA
| | - Ferdinand le Noble
- Department of Cell and Developmental Biology, Institute of Zoology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Feilim Mac Gabhann
- Department of Biomedical Engineering, Institute for Computational Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Victoria L Bautch
- Curriculum in Cell Biology and Physiology, University of North Carolina, Chapel Hill, NC, USA.
- Department of Biology, The University of North Carolina at Chapel Hill, CB No. 3280, Chapel Hill, NC, 27599, USA.
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA.
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3
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Lenahan SM, Sarausky HM, Deming P, Seward DJ. STK11 loss leads to YAP1-mediated transcriptional activation in human KRAS-driven lung adenocarcinoma cell lines. Cancer Gene Ther 2024; 31:1-8. [PMID: 37968341 PMCID: PMC10794139 DOI: 10.1038/s41417-023-00687-y] [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: 06/30/2023] [Revised: 10/16/2023] [Accepted: 10/31/2023] [Indexed: 11/17/2023]
Abstract
Serine Threonine Kinase 11 (STK11) loss of function (LoF) correlates with anti-PD-1 therapy resistance in patients with KRAS-driven lung adenocarcinoma (LUAD). The molecular mechanisms governing this observation remain unclear and represent a critical outstanding question in the field of lung oncology. As an initial approach to understand this phenomenon, we knocked-out (KO) STK11 in multiple KRAS-driven, STK11-competent human LUAD cell lines and performed whole transcriptome analyses to identify STK11-loss-dependent differential gene expression. Subsequent pathway enrichment studies highlighted activation of the HIPPO/YAP1 signaling axis, along with the induction of numerous tumor-intrinsic cytokines. To validate that YAP1-mediated transcriptional activation occurs in response to STK11 loss, we pursued YAP1 perturbation as a strategy to restore an STK11-competent gene expression profile in STK11-KO LUAD cell lines. Together, our data link STK11 loss with YAP1-mediated transcriptional activation, including the upregulation of immune-evasion promoting cytokines IL-6, CXCL8 and CXCL2. Further, our results raise the intriguing possibility that YAP1 antagonism may represent a therapeutic approach to counter anti-PD-1 therapy resistance in STK11-null, KRAS-driven LUADs by modulating tumor-intrinsic gene expression to promote a "hot" tumor immune microenvironment.
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Affiliation(s)
- Sean M Lenahan
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Hailey M Sarausky
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Paula Deming
- Department of Biomedical and Health Sciences, University of Vermont College of Nursing and Health Sciences, Burlington, VT, USA
- University of Vermont Cancer Center, Burlington, VT, USA
| | - David J Seward
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA.
- University of Vermont Cancer Center, Burlington, VT, USA.
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4
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Deng Y, Cheng H, Li J, Han H, Qi M, Wang N, Tan B, Li J, Wang J. Effects of glutamine, glutamate, and aspartate on intestinal barrier integrity and amino acid pool of the small intestine in piglets with normal or low energy diet. Front Vet Sci 2023; 10:1202369. [PMID: 37576837 PMCID: PMC10414990 DOI: 10.3389/fvets.2023.1202369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/03/2023] [Indexed: 08/15/2023] Open
Abstract
Aspartate (asp), glutamate (glu), and glutamine (gln) are the major energy fuels for the small intestine, and it had been indicated in our previous study that the mix of these three amino acid supplementations could maintain intestinal energy homeostasis. This study aimed to further investigate whether the treatment of gln, glu, and asp in low energy diet affects the intestinal barrier integrity and amino acid pool in weaning piglets. A total of 198 weaned piglets were assigned to 3 treatments: control (basal diet + 1.59% L-Ala); T1 (basal diet + 1% L-Gln + 0.5% L-Glu + 0.1% L-Asp); and T2 (low energy diet + 1% L-Gln + 0.5% L-Glu + 0.1% L-Asp). The blood, jejunum, and ileum were obtained on day 5 or on day 21 post-weaning, respectively. Our results showed that T1 and T2 treatments increased the abundances of occludin, claudin-1, and claudin-3 in the small intestine while decreasing the serum diamine oxidase (DAO) and D-lactate levels in weaning piglets. Meanwhile, T1 and T2 treatments significantly increased the positive rate of proliferating cell nuclear antigen (PCNA) of the small intestine, promoting intestinal cell proliferation. We also found that supplementation with glu, gln, and asp improved the serum amino acid pool and promoted ileal amino acid transporter gene expression of slc3a2, slc6a14, and slc7a11 in weaned piglets. Additionally, on day 21 post-weaning, T1 and T2 treatments stimulated the phosphorylation of the mTOR-S6K1-4EBP1 signaling pathway in the small intestine, which may implicate the enhanced protein synthesis rate. In summary, dietary supplementation of gln, glu, and asp was beneficial to the intestinal barrier function and amino acid pool regulation, while the benefits of gln, glu, and asp treatment might be diminished by the low-energy diet. The results demonstrated that the supplementation of gln, glu, and asp under low energy levels was preferentially supplied as the energy fuel to restore the gut barrier function in piglets on day 5 post-weaning. With the increase in age and intestinal maturation (on day 21 post-weaning), gln, glu, and asp supplementation could also show an effect on the regulation of the amino acid pool and protein synthesis.
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Affiliation(s)
- Yuankun Deng
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Hao Cheng
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Junyao Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Hui Han
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agroecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China
| | - Ming Qi
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agroecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China
| | - Nan Wang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Bi'e Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Jianjun Li
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agroecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China
| | - Jing Wang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
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5
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Koo J, Seong CS, Parker RE, Dwivedi B, Arthur RA, Dinasarapu AR, Johnston HR, Claussen H, Tucker-Burden C, Ramalingam SS, Fu H, Zhou W, Marcus AI, Gilbert-Ross M. Live-cell invasive phenotyping uncovers the ALK2/BMP6 iron homeostasis pathway as a therapeutic vulnerability in LKB1-mutant lung cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.14.544941. [PMID: 37398244 PMCID: PMC10312689 DOI: 10.1101/2023.06.14.544941] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
The acquisition of invasive properties is a prerequisite for tumor progression and metastasis. Molecular subtypes of KRAS-driven lung cancer exhibit distinct modes of invasion that likely contribute to unique growth properties and therapeutic susceptibilities. Despite this, pre-clinical discovery strategies designed to exploit invasive phenotypes are lacking. To address this, we designed an experimental system to screen for targetable signaling pathways linked to active early invasion phenotypes in the two most prominent molecular subtypes, TP53 and LKB1, of KRAS-driven lung adenocarcinoma (LUAD). By combining live-cell imaging of human bronchial epithelial cells in a 3D invasion matrix with RNA transcriptome profiling, we identified the LKB1-specific upregulation of bone morphogenetic protein 6 (BMP6). Examination of early-stage lung cancer patients confirmed upregulation of BMP6 in LKB1-mutant lung tumors. At the molecular level, we find that the canonical iron regulatory hormone Hepcidin is induced via BMP6 signaling upon LKB1 loss, where intact LKB1 kinase activity is necessary to maintain signaling homeostasis. Furthermore, pre-clinical studies in a novel Kras/Lkb1-mutant syngeneic mouse model show that potent growth suppression was achieved by inhibiting the ALK2/BMP6 signaling axis with single agents that are currently in clinical trials. We show that alterations in the iron homeostasis pathway are accompanied by simultaneous upregulation of ferroptosis protection proteins. Thus, LKB1 is sufficient to regulate both the 'gas' and 'breaks' to finely tune iron-regulated tumor progression.
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Affiliation(s)
- Junghui Koo
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Chang-Soo Seong
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Rebecca E. Parker
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
- Cancer Biology Graduate Program, Emory University, Atlanta, GA, USA
| | - Bhakti Dwivedi
- Biostatistics and Bioinformatics Shared Resource, Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Robert A. Arthur
- Emory Integrated Computational Core, Emory University School of Medicine, Atlanta, GA, USA
| | | | - H. Richard Johnston
- Emory Integrated Computational Core, Emory University School of Medicine, Atlanta, GA, USA
| | - Henry Claussen
- Emory Integrated Computational Core, Emory University School of Medicine, Atlanta, GA, USA
| | - Carol Tucker-Burden
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Suresh S. Ramalingam
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Haian Fu
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Wei Zhou
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Adam I. Marcus
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Melissa Gilbert-Ross
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
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6
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Andersson-Rusch C, Liu B, Quist-Løkken I, Upton PD, Olsen OE, Hella H, Yang X, Tong Z, Morrell NW, Holien T, Li W. High concentrations of soluble endoglin can inhibit BMP9 signaling in non-endothelial cells. Sci Rep 2023; 13:6639. [PMID: 37095146 PMCID: PMC10126157 DOI: 10.1038/s41598-023-33352-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 04/12/2023] [Indexed: 04/26/2023] Open
Abstract
Endoglin (ENG) is a single-pass transmembrane protein highly expressed on vascular endothelial cells, although low expression levels can be detected in many other cell types. Its extracellular domain can be found in circulation known as soluble endoglin (sENG). Levels of sENG are elevated in many pathological conditions, in particular preeclampsia. We have shown that while loss of cell surface ENG decreases BMP9 signaling in endothelial cells, knocking down ENG in blood cancer cells enhances BMP9 signaling. Despite sENG binding to BMP9 with high affinity and blocking the type II receptor binding site on BMP9, sENG did not inhibit BMP9 signaling in vascular endothelial cells, but the dimeric form of sENG inhibited BMP9 signaling in blood cancer cells. Here we report that in non-endothelial cells such as human multiple myeloma cell lines and the mouse myoblast cell line C2C12, both monomeric and dimeric forms of sENG inhibit BMP9 signaling when present at high concentrations. Such inhibition can be alleviated by the overexpression of ENG and ACVRL1 (encoding ALK1) in the non-endothelial cells. Our findings suggest that the effects of sENG on BMP9 signaling is cell-type specific. This is an important consideration when developing therapies targeting the ENG and ALK1 pathway.
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Affiliation(s)
- Clara Andersson-Rusch
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
- Department of Hematology, St. Olav's University Hospital, Trondheim, Norway
| | - Bin Liu
- Department of Medicine, Victor Phillip Dahdaleh Heart and Lung Research Institute, School of Clinical Medicine, University of Cambridge, Papworth Road, Cambridge Biomedical Campus, Cambridge, CB2 0BB, UK
| | - Ingrid Quist-Løkken
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
| | - Paul D Upton
- Department of Medicine, Victor Phillip Dahdaleh Heart and Lung Research Institute, School of Clinical Medicine, University of Cambridge, Papworth Road, Cambridge Biomedical Campus, Cambridge, CB2 0BB, UK
| | - Oddrun Elise Olsen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
| | - Hanne Hella
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
| | - Xudong Yang
- Department of Medicine, Victor Phillip Dahdaleh Heart and Lung Research Institute, School of Clinical Medicine, University of Cambridge, Papworth Road, Cambridge Biomedical Campus, Cambridge, CB2 0BB, UK
| | - Zhen Tong
- Department of Medicine, Victor Phillip Dahdaleh Heart and Lung Research Institute, School of Clinical Medicine, University of Cambridge, Papworth Road, Cambridge Biomedical Campus, Cambridge, CB2 0BB, UK
| | - Nicholas W Morrell
- Department of Medicine, Victor Phillip Dahdaleh Heart and Lung Research Institute, School of Clinical Medicine, University of Cambridge, Papworth Road, Cambridge Biomedical Campus, Cambridge, CB2 0BB, UK
| | - Toril Holien
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway.
- Department of Hematology, St. Olav's University Hospital, Trondheim, Norway.
- Department of Biomedical Laboratory Science, NTNU, Trondheim, Norway.
- Department of Immunology and Transfusion Medicine, St. Olav's University Hospital, Trondheim, Norway.
| | - Wei Li
- Department of Medicine, Victor Phillip Dahdaleh Heart and Lung Research Institute, School of Clinical Medicine, University of Cambridge, Papworth Road, Cambridge Biomedical Campus, Cambridge, CB2 0BB, UK.
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7
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Tzavlaki K, Ohata Y, Morén A, Watanabe Y, Eriksson J, Tsuchiya M, Kubo Y, Yamamoto K, Sellin ME, Kato M, Caja L, Heldin CH, Moustakas A. The liver kinase B1 supports mammary epithelial morphogenesis by inhibiting critical factors that mediate epithelial-mesenchymal transition. J Cell Physiol 2023; 238:790-812. [PMID: 36791282 DOI: 10.1002/jcp.30975] [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: 04/01/2022] [Revised: 01/24/2023] [Accepted: 01/31/2023] [Indexed: 02/17/2023]
Abstract
The liver kinase B1 (LKB1) controls cellular metabolism and cell polarity across species. We previously established a mechanism for negative regulation of transforming growth factor β (TGFβ) signaling by LKB1. The impact of this mechanism in the context of epithelial polarity and morphogenesis remains unknown. After demonstrating that human mammary tissue expresses robust LKB1 protein levels, whereas invasive breast cancer exhibits significantly reduced LKB1 levels, we focused on mammary morphogenesis studies in three dimensional (3D) acinar organoids. CRISPR/Cas9-introduced loss-of-function mutations of STK11 (LKB1) led to profound defects in the formation of 3D organoids, resulting in amorphous outgrowth and loss of rotation of young organoids embedded in matrigel. This defect was associated with an enhanced signaling by TGFβ, including TGFβ auto-induction and induction of transcription factors that mediate epithelial-mesenchymal transition (EMT). Protein marker analysis confirmed a more efficient EMT response to TGFβ signaling in LKB1 knockout cells. Accordingly, chemical inhibition of the TGFβ type I receptor kinase largely restored the morphogenetic defect of LKB1 knockout cells. Similarly, chemical inhibition of the bone morphogenetic protein pathway or the TANK-binding kinase 1, or genetic silencing of the EMT factor SNAI1, partially restored the LKB1 knockout defect. Thus, LKB1 sustains mammary epithelial morphogenesis by limiting pathways that promote EMT. The observed downregulation of LKB1 expression in breast cancer is therefore predicted to associate with enhanced EMT induced by SNAI1 and TGFβ family members.
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Affiliation(s)
- Kalliopi Tzavlaki
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Yae Ohata
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Anita Morén
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Yukihide Watanabe
- Department of Experimental Pathology and Transborder Medical Research Center, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Jens Eriksson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Maiko Tsuchiya
- Department of Oral Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Pathology, Teikyo University School of Medicine, Tokyo, Japan
| | - Yuki Kubo
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kouhei Yamamoto
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mikael E Sellin
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Mitsuyasu Kato
- Department of Experimental Pathology and Transborder Medical Research Center, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Laia Caja
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Carl-Henrik Heldin
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Aristidis Moustakas
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Uppsala, Sweden
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8
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Sanketi BD, Zuela-Sopilniak N, Bundschuh E, Gopal S, Hu S, Long J, Lammerding J, Hopyan S, Kurpios NA. Pitx2 patterns an accelerator-brake mechanical feedback through latent TGFβ to rotate the gut. Science 2022; 377:eabl3921. [PMID: 36137018 PMCID: PMC10089252 DOI: 10.1126/science.abl3921] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The vertebrate intestine forms by asymmetric gut rotation and elongation, and errors cause lethal obstructions in human infants. Rotation begins with tissue deformation of the dorsal mesentery, which is dependent on left-sided expression of the Paired-like transcription factor Pitx2. The conserved morphogen Nodal induces asymmetric Pitx2 to govern embryonic laterality, but organ-level regulation of Pitx2 during gut asymmetry remains unknown. We found Nodal to be dispensable for Pitx2 expression during mesentery deformation. Intestinal rotation instead required a mechanosensitive latent transforming growth factor-β (TGFβ), tuning a second wave of Pitx2 that induced reciprocal tissue stiffness in the left mesentery as mechanical feedback with the right side. This signaling regulator, an accelerator (right) and brake (left), combines biochemical and biomechanical inputs to break gut morphological symmetry and direct intestinal rotation.
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Affiliation(s)
- Bhargav D Sanketi
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Noam Zuela-Sopilniak
- Weill Institute for Cell and Molecular Biology and Department of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Elizabeth Bundschuh
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Sharada Gopal
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Shing Hu
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Joseph Long
- Weill Institute for Cell and Molecular Biology and Department of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Jan Lammerding
- Weill Institute for Cell and Molecular Biology and Department of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Sevan Hopyan
- Program in Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Natasza A Kurpios
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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9
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Vora M, Mondal A, Jia D, Gaddipati P, Akel M, Gilleran J, Roberge J, Rongo C, Langenfeld J. Bone morphogenetic protein signaling regulation of AMPK and PI3K in lung cancer cells and C. elegans. Cell Biosci 2022; 12:76. [PMID: 35641992 PMCID: PMC9153151 DOI: 10.1186/s13578-022-00817-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 05/17/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Bone morphogenetic protein (BMP) is a phylogenetically conserved signaling pathway required for development that is aberrantly expressed in several age-related diseases including cancer, Alzheimer's disease, obesity, and cardiovascular disease. Aberrant BMP signaling in mice leads to obesity, suggesting it may alter normal metabolism. The role of BMP signaling regulating cancer metabolism is not known. METHODS To examine BMP regulation of metabolism, C. elegans harboring BMP gain-of-function (gof) and loss-of-function (lof) mutations were examined for changes in activity of catabolic and anabolic metabolism utilizing Western blot analysis and fluorescent reporters. AMP activated kinase (AMPK) gof and lof mutants were used to examine AMPK regulation of BMP signaling. H1299 (LKB1 wild-type), A549 (LKB1 lof), and A549-LKB1 (LKB1 restored) lung cancer cell lines were used to study BMP regulation of catabolic and anabolic metabolism. Studies were done using recombinant BMP ligands to activate BMP signaling, and BMP receptor specific inhibitors and siRNA to inhibit signaling. RESULTS BMP signaling in both C. elegans and cancer cells is responsive to nutrient conditions. In both C. elegans and lung cancer cell lines BMP suppressed AMPK, the master regulator of catabolism, while activating PI3K, a regulator of anabolism. In lung cancer cells, inhibition of BMP signaling by siRNA or small molecules increased AMPK activity, and this increase was mediated by activation of LKB1. BMP2 ligand suppressed AMPK activation during starvation. BMP2 ligand decreased expression of TCA cycle intermediates and non-essential amino acids in H1299 cells. Furthermore, we show that BMP activation of PI3K is mediated through BMP type II receptor. We also observed feedback signaling, as AMPK suppressed BMP signaling, whereas PI3K increased BMP signaling. CONCLUSION These studies show that BMP signaling suppresses catabolic metabolism and stimulates anabolic metabolism. We identified feedback mechanisms where catabolic induced signaling mediated by AMPK negatively regulates BMP signaling, whereas anabolic signaling produces a positive feedback regulation of BMP signing through Akt. These mechanisms were conserved in both lung cancer cells and C. elegans. These studies suggest that aberrant BMP signaling causes dysregulation of metabolism that is a potential mechanism by which BMP promotes survival of cancer cells.
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Affiliation(s)
- Mehul Vora
- Department of Genetics, The Waksman Institute, Rutgers the State University of NJ, Piscataway, NJ, 08854, USA
| | - Arindam Mondal
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08903, USA
| | - Dongxuan Jia
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08903, USA
| | - Pranya Gaddipati
- Department of Genetics, The Waksman Institute, Rutgers the State University of NJ, Piscataway, NJ, 08854, USA
| | - Moumen Akel
- Rutgers University, Piscataway, NJ, 08854, USA
| | - John Gilleran
- Molecular Design and Synthesis, RUBRIC, Office for Research, Rutgers Translational Science, Rutgers University, Piscataway, NJ, 08854, USA
| | - Jacques Roberge
- Molecular Design and Synthesis, RUBRIC, Office for Research, Rutgers Translational Science, Rutgers University, Piscataway, NJ, 08854, USA
| | - Christopher Rongo
- Department of Genetics, The Waksman Institute, Rutgers the State University of NJ, Piscataway, NJ, 08854, USA
| | - John Langenfeld
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08903, USA.
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10
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Xiao J, Li W, Li G, Tan J, Dong N. STK11 overexpression prevents glucocorticoid-induced osteoporosis via activating the AMPK/SIRT1/PGC1α axis. Hum Cell 2022; 35:1045-1059. [PMID: 35543972 DOI: 10.1007/s13577-022-00704-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 04/16/2022] [Indexed: 11/04/2022]
Abstract
Osteoporosis (OP) is a frequent orthopedic disease characterized by pain, fractures and deformities. Glucocorticoids are the most common cause of secondary osteoporosis. Here, we aim to explore the function and mechanism of STK11 in glucocorticoid (GC)-induced OP. Human mesenchymal stromal cells (hMSCs) were differentiated under osteogenic or adipogenic culture medium. An in-vitro OP model was induced by dexamethasone (DEX). The viability, differentiation, apoptosis, and ROS level were evaluated for investigating the functions of SKT11 on hMSCs. The SIRT1 inhibitor EX-527, PGC1α inhibitor SR-18292, and AMPK activator metformin were administered into hMSCs for confirming the mechanism of SKT11. Our results showed that STK11 was down-regulated in OP tissues, as well as DEX-treated hMSCs. Overexpressing STK11 attenuated DEX-mediated inhibition of osteogenic differentiation and heightened the activation of the AMPK/SIRT1/PGC1α pathway, whereas STK11 knockdown exerted opposite effects. Inhibiting SIRT1 or PGC1α repressed the promotive effect of STK11 on osteogenic differentiation of hMSCs, while activation of AMPK abated the inhibitory effect of STK11 knockdown on osteogenic differentiation of hMSCs. In conclusion, this study revealed that overexpressing STK11 dampened GC-induced OP by activating the AMPK/SIRT1/PGC1α axis.
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Affiliation(s)
- Jiao Xiao
- Department of Endocrinology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, No.336 Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, China
| | - Wenjin Li
- Department of Endocrinology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, No.336 Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, China
| | - Guojuan Li
- Department of Endocrinology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, No.336 Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, China
| | - Jiankai Tan
- Department of Endocrinology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, No.336 Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, China
| | - Na Dong
- Department of Endocrinology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, No.336 Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, China.
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11
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Long F, Shi H, Li P, Guo S, Ma Y, Wei S, Li Y, Gao F, Gao S, Wang M, Duan R, Wang X, Yang K, Sun W, Li X, Li J, Liu Q. A SMOC2 variant inhibits BMP signaling by competitively binding to BMPR1B and causes growth plate defects. Bone 2021; 142:115686. [PMID: 33059102 DOI: 10.1016/j.bone.2020.115686] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/24/2020] [Accepted: 10/08/2020] [Indexed: 12/21/2022]
Abstract
Endochondral ossification is the major process of long bone formation, and chondrogenesis is the final step of this process. Several studies have indicated that bone morphogenetic proteins (BMPs) are required for chondrogenesis and regulate multiple growth plate features. Abnormal BMP pathways lead to growth plate defects, resulting in osteochondrodysplasia. The SPARC-related modular calcium binding 2 (SMOC2) gene encodes an extracellular protein that is considered to be an antagonist of BMP signaling. In this study, we generated a mouse model by knocking-in the SMOC2 mutation (c.1076 T > G), which showed short-limbed dwarfism, reduced, disorganized, and hypocellular proliferative zones and expanded hypertrophic zones in tibial growth plates. To determine the underlying pathophysiological mechanism of SMOC2 mutation, we used knock-in mice to investigate the interaction between SMOC2 and the BMP-SMAD1/5/9 signaling pathway in vivo and in vitro. Eventually, we found that mutant SMOC2 could not bind to COL9A1 and HSPG. Furthermore, mutant SMOC2 inhibited BMP signaling by competitively binding to BMPR1B, which lead to defects in growth plates and short-limbed dwarfism in knock-in mice.
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Affiliation(s)
- Feng Long
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Hongbiao Shi
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Pengyu Li
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Shaoqiang Guo
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Yuer Ma
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Shijun Wei
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Yan Li
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Fei Gao
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Shang Gao
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Meitian Wang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Ruonan Duan
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China; Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xiaojing Wang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Kun Yang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Wenjie Sun
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xi Li
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Jiangxia Li
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Qiji Liu
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
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12
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Tong X, Ganta RR, Liu Z. AMP-activated protein kinase (AMPK) regulates autophagy, inflammation and immunity and contributes to osteoclast differentiation and functionabs. Biol Cell 2020; 112:251-264. [PMID: 32445585 DOI: 10.1111/boc.202000008] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 02/06/2023]
Abstract
Osteoclasts are multinucleated giant cells, responsible for bone resorption. Osteoclast differentiation and function requires a series of cytokines to remove the old bone, which coordinates with the induction of bone remodelling by osteoblast-mediated bone formation. Studies have demonstrated that AMP-activated protein kinase (AMPK) play a negative regulatory role in osteoclast differentiation and function. Research involving AMPK, a nutrient and energy sensor, has primarily focused on osteoclast differentiation and function; thus, its role in autophagy, inflammation and immunity remains poorly understood. Autophagy is a conservative homoeostatic mechanism of eukaryotic cells, and response to osteoclast differentiation and function; however, how it interacts with inflammation remains unclear. Additionally, based on the regulatory function of different AMPK subunits for osteoclast differentiation and function, its activation is regulated by upstream factors to perform bone metabolism. This review summarises the critical role of AMPK-mediated autophagy, inflammation and immunity by upstream and downstream signalling during receptor activator of nuclear factor kappa-B ligand-induced osteoclast differentiation and function. This pathway may provide therapeutic targets for bone-related diseases, as well as function as a biomarker for bone homoeostasis.
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Affiliation(s)
- Xishuai Tong
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, People's Republic of China.,Center of Excellence for Vector-Borne Diseases, Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, 66502, USA.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, 225009, People's Republic of China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, Jiangsu, 225009, People's Republic of China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, 225009, People's Republic of China
| | - Roman R Ganta
- Center of Excellence for Vector-Borne Diseases, Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, 66502, USA
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, People's Republic of China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, 225009, People's Republic of China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, Jiangsu, 225009, People's Republic of China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, 225009, People's Republic of China
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13
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Renault L, Patiño LC, Magnin F, Delemer B, Young J, Laissue P, Binart N, Beau I. BMPR1A and BMPR1B Missense Mutations Cause Primary Ovarian Insufficiency. J Clin Endocrinol Metab 2020; 105:5643734. [PMID: 31769494 DOI: 10.1210/clinem/dgz226] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/25/2019] [Indexed: 02/13/2023]
Abstract
CONTEXT Primary ovarian insufficiency (POI) is a frequently occurring disorder affecting approximately 1% of women under 40 years of age. POI, which is characterized by the premature depletion of ovarian follicles and elevated plasma levels of follicle-stimulating hormone, leads to infertility. Although various etiological factors have been described, including chromosomal abnormalities and gene mutations, most cases remain idiopathic. OBJECTIVE To identify and to functionally validate new sequence variants in 2 genes that play a key role in mammalian ovarian function, BMPR1A and BMPR1B (encoding for bone morphogenic protein receptor), leading to POI. METHODS The impact on bone morphogenic protein (BMP) signaling of BMPR1A and BMPR1B variants, previously identified by whole-exome sequencing on 69 women affected by isolated POI, was established by different in vitro functional experiments. RESULTS We demonstrate that the BMPR1A-p.Arg442His and BMPR1B-p.Phe272Leu variants are correctly expressed and located but lead to an impairment of downstream BMP signaling. CONCLUSION In accordance with infertility observed in mice lacking Bmpr1a in the ovaries and in Bmpr1b-/- mice, our results unveil, for the first time, a link between BMPR1A and BMPR1B variants and the origin of POI. We show that BMP signaling impairment through specific BMPR1A and BMPR1B variants is a novel pathophysiological mechanism involved in human POI. We consider that BMPR1A and BMPR1B variants constitute genetic biomarkers of the origin of POI and have clinical utility.
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Affiliation(s)
- Lucie Renault
- Inserm U1185, Faculté de Médecine Paris Sud, France
- Univ Paris Sud, Université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - Liliana C Patiño
- Center For Research in Genetics and Genomics (CIGGUR), GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá DC, Colombia
| | - Françoise Magnin
- Inserm U1185, Faculté de Médecine Paris Sud, France
- Univ Paris Sud, Université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - Brigitte Delemer
- Service d'Endocrinologie-Diabète-Nutrition, CHU de Reims-Hôpital Robert-Debré, Reims, France
| | - Jacques Young
- Inserm U1185, Faculté de Médecine Paris Sud, France
- Univ Paris Sud, Université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
- Department of Reproductive Endocrinology, Assistance Publique-Hôpitaux de Paris, Bicêtre Hôpital, Le Kremlin-Bicêtre, France
| | - Paul Laissue
- Center For Research in Genetics and Genomics (CIGGUR), GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá DC, Colombia
| | - Nadine Binart
- Inserm U1185, Faculté de Médecine Paris Sud, France
- Univ Paris Sud, Université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - Isabelle Beau
- Inserm U1185, Faculté de Médecine Paris Sud, France
- Univ Paris Sud, Université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
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14
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Tracy Cai X, Li H, Safyan A, Gawlik J, Pyrowolakis G, Jasper H. AWD regulates timed activation of BMP signaling in intestinal stem cells to maintain tissue homeostasis. Nat Commun 2019; 10:2988. [PMID: 31278345 PMCID: PMC6611797 DOI: 10.1038/s41467-019-10926-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 06/06/2019] [Indexed: 12/28/2022] Open
Abstract
Precise control of stem cell (SC) proliferation ensures tissue homeostasis. In the Drosophila intestine, injury-induced regeneration involves initial activation of intestinal SC (ISC) proliferation and subsequent return to quiescence. These two phases of the regenerative response are controlled by differential availability of the BMP type I receptor Thickveins (Tkv), yet how its expression is dynamically regulated remains unclear. Here we show that during homeostasis, the E3 ubiquitin ligase Highwire and the ubiquitin-proteasome system maintain low Tkv protein expression. After ISC activation, Tkv is stabilized by proteasome inhibition and undergoes endocytosis due to the induction of the nucleoside diphosphate kinase Abnormal Wing Disc (AWD). Tkv internalization is required for the activation of the Smad protein Mad, and for the return to quiescence after a regenerative episode. Our data provide insight into the mechanisms ensuring tissue homeostasis by dynamic control of somatic stem cell activity. Regeneration after injury in the Drosophila intestine involves early activation of intestinal stem cells (ISCs) and subsequent return to quiescence. Here the authors show that return to quiescence by ISCs involves BMP Type I receptor Tkv protein stabilization along with AWD mediated internalization into endocytic vesicles.
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Affiliation(s)
- Xiaoyu Tracy Cai
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA, 94945-1400, USA
| | - Hongjie Li
- Department of Biology and Howard Hughes Medical Institute, Stanford University, Stanford, CA, 94305, USA
| | - Abu Safyan
- International Max Planck Research School for Molecular and Cellular Biology (IMPRS-MCB), Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany.,Institute for Biology I, Faculty of Biology, Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany.,Center for Biological Systems Analysis (ZBSA), Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany
| | - Jennifer Gawlik
- Institute for Biology I, Faculty of Biology, Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany.,Center for Biological Systems Analysis (ZBSA), Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany.,Spemann Graduate School of Biology and Medicine (SGBM), Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany
| | - George Pyrowolakis
- Institute for Biology I, Faculty of Biology, Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany.,Center for Biological Systems Analysis (ZBSA), Albert-Ludwigs-University of Freiburg, 79104, Freiburg, Germany.,Signalling Research Centre BIOSS and CIBSS, Albert-Ludwigs-University Freiburg, 79104, Freiburg, Germany
| | - Heinrich Jasper
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA, 94945-1400, USA. .,Immunology Discovery, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA. .,Leibniz Institute on Aging - Fritz Lipmann Institute, 07745, Jena, Germany.
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15
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Batool T, Fang J, Jansson V, Zhao H, Gallant C, Moustakas A, Li JP. Upregulated BMP-Smad signaling activity in the glucuronyl C5-epimerase knock out MEF cells. Cell Signal 2019; 54:122-129. [DOI: 10.1016/j.cellsig.2018.11.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 11/14/2018] [Accepted: 11/14/2018] [Indexed: 01/06/2023]
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16
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He Q, Li J, Dong F, Cai C, Zou X. LKB1 promotes radioresistance in esophageal cancer cells exposed to radiation, by suppression of apoptosis and activation of autophagy via the AMPK pathway. Mol Med Rep 2017; 16:2205-2210. [DOI: 10.3892/mmr.2017.6852] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 04/05/2017] [Indexed: 11/06/2022] Open
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