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Safari F, Yeoh WJ, Perret-Gentil S, Klenke F, Dolder S, Hofstetter W, Krebs P. SHIP1 deficiency causes inflammation-dependent retardation in skeletal growth. Life Sci Alliance 2024; 7:e202302297. [PMID: 38388173 PMCID: PMC10883774 DOI: 10.26508/lsa.202302297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
Inflammation and skeletal homeostasis are closely intertwined. Inflammatory diseases are associated with local and systemic bone loss, and post-menopausal osteoporosis is linked to low-level chronic inflammation. Phosphoinositide-3-kinase signalling is a pivotal pathway modulating immune responses and controlling skeletal health. Mice deficient in Src homology 2-containing inositol phosphatase 1 (SHIP1), a negative regulator of the phosphoinositide-3-kinase pathway, develop systemic inflammation associated with low body weight, reduced bone mass, and changes in bone microarchitecture. To elucidate the specific role of the immune system in skeletal development, a genetic approach was used to characterise the contribution of SHIP1-controlled systemic inflammation to SHIP1-dependent osteoclastogenesis. Lymphocyte deletion entirely rescued the skeletal phenotype in Rag2 -/- /Il2rg -/- /SHIP1 -/- mice. Rag2 -/- /Il2rg -/- /SHIP1 -/- osteoclasts, however, displayed an intermediate transcriptomic signature between control and Rag2 +/+ /Il2rg +/+ /SHIP1 -/- osteoclasts while exhibiting aberrant in vitro development and functions similar to Rag2 +/+ /Il2rg +/+ /SHIP1 -/- osteoclasts. These data establish a cell-intrinsic role for SHIP1 in osteoclasts, with inflammation as the key driver of the skeletal phenotype in SHIP1-deficient mice. Our findings demonstrate the central role of the immune system in steering physiological skeletal development.
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Affiliation(s)
- Fatemeh Safari
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
- AO Research Institute Davos, Davos, Switzerland
| | - Wen Jie Yeoh
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
- Institute of Tissue Medicine and Pathology, University of Bern, Bern, Switzerland
| | - Saskia Perret-Gentil
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Frank Klenke
- Department of Orthopaedic Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Silvia Dolder
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Willy Hofstetter
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Philippe Krebs
- Institute of Tissue Medicine and Pathology, University of Bern, Bern, Switzerland
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2
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Li M, Cong R, Wang H, Ma C, Lv Y, Zheng Y, Zhao Y, Fu Q, Li L. What happens to the osteoporotic bone mesenchymal stem cells? Evidence from RNA sequencing. Int J Med Sci 2024; 21:95-106. [PMID: 38164361 PMCID: PMC10750345 DOI: 10.7150/ijms.88146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 10/04/2023] [Indexed: 01/03/2024] Open
Abstract
Evidence presented that osteoporosis is closely related to the dysfunction of bone mesenchymal stem cells (BMSCs). But most studies are insufficient to reveal what actually happens to the osteoporotic BMSCs. In this study, BMSCs were harvested from ovariectomized and sham-operated rats. After checking the characteristics of rat models and stem cells, the BMSCs were carried out for RNA sequencing. Part of the findings were verified that seven mRNAs (Abi3bp, Aifm3, Ccl11, Cdkn1c, Chst10, Id2, Vcam1) were significantly up-regulated in osteoporotic BMSCs while seven mRNAs (Cep63, Fgfr3, Myc, Omd, Pou2f1, Smarcal1, Timm10b) were down-regulated. In addition, potential miRNA-mRNA and lncRNA-mRNA regulatory networks were illustrated. The changes in osteoporotic BMSCs covered a large set of biological processes, including cell viability, differentiation, immunoreaction, bone repairment and estrogen defect. This study enriched the pathophysiological mechanisms of BMSCs and osteporosis, as well as provided dozens of attractive RNA targets for further treatment.
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Affiliation(s)
- Mingyang Li
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
| | - Rong Cong
- Senior Department of Obstetrics & Gynecology, the Seventh Medical Center of PLA General Hospital, Beijing, China
| | - Huadong Wang
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
| | - Chao Ma
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
| | - Yongwei Lv
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
| | - Yang Zheng
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
| | - Yantao Zhao
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
| | - Qin Fu
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Li Li
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing, China
- Beijing Engineering Research Center of Orthopedics Implants, Beijing, China
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3
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Endothelial Cells Promote Migration of Mesenchymal Stem Cells via PDGF-BB/PDGFRβ-Src-Akt in the Context of Inflammatory Microenvironment upon Bone Defect. Stem Cells Int 2022; 2022:2401693. [PMID: 36193255 PMCID: PMC9526552 DOI: 10.1155/2022/2401693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
Homing of mesenchymal stem cells (MSCs) to the defect site is indispensable for bone repair. Local endothelial cells (ECs) can recruit MSCs; however, the mechanism remains unclear, especially in the context of the inflammatory microenvironment. This study was aimed to investigate the role of ECs in MSCs migration during the inflammatory phase of bone repair. The inflammatory microenvironment was mimicked in vitro via adding a cytokine set (IL-1β, IL-6, and TNF-α) to the culture medium of ECs. The production of PDGF-BB from ECs was measured by ELISA. Transwell and wound healing assays were employed to assess MSCs migration toward ECs and evaluate the implication of PDGF-BB/PDGFRβ. A series of shRNA and pathway inhibitors were used to screen signal molecules downstream of PDGF-BB/PDGFRβ. Then, mouse models of femoral defects were fabricated and DBM scaffolds were implanted. GFP+ MSCs were injected via tail vein, and the relevance of PDGF-BB/PDGFRβ, as well as screened signal molecules, in cell homing was further verified during the early phase of bone repair. In the mimicked inflammatory microenvironment, MSCs migration toward ECs was significantly promoted, which could be abrogated by pdgfrb knockout in MSCs. Inhibition of Src or Akt led to negative effects analogous to pdgfrb knockout. Blockade of JNK, MEK, and p38 MAPK had no impact. Meanwhile, the secretion of PDGF-BB from ECs was evidently motivated by the inflammatory microenvironment. Adding recombinant PDGF-BB protein to the culture medium of ECs phenocopied the inflammatory microenvironment with regard to attracting MSCs, which was abolished by pdgfb, src, or akt in MSCs. Moreover, pdgfb knockout suppressed the expression and phosphorylation of Src and Akt in migrating MSCs. Src knockout impaired Akt expression but not vice versa. In vivo, reduced infiltration of CD31+ ECs was correlated with diminished PDGF-BB in local defect sites, and silencing pdgfb, src, or akt in MSCs markedly hampered cell homing. Together, these findings suggest that in the inflammatory microenvironment, MSCs migrate toward ECs via PDGF-BB/PDGFRβ and the downstream Src-Akt signal pathway.
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Qin Q, Liu Y, Yang Z, Aimaijiang M, Ma R, Yang Y, Zhang Y, Zhou Y. Hypoxia-Inducible Factors Signaling in Osteogenesis and Skeletal Repair. Int J Mol Sci 2022; 23:ijms231911201. [PMID: 36232501 PMCID: PMC9569554 DOI: 10.3390/ijms231911201] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/10/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Sufficient oxygen is required to maintain normal cellular and physiological function, such as a creature’s development, breeding, and homeostasis. Lately, some researchers have reported that both pathological hypoxia and environmental hypoxia might affect bone health. Adaptation to hypoxia is a pivotal cellular event in normal cell development and differentiation and in pathological settings such as ischemia. As central mediators of homeostasis, hypoxia-inducible transcription factors (HIFs) can allow cells to survive in a low-oxygen environment and are essential for the regulation of osteogenesis and skeletal repair. From this perspective, we summarized the role of HIF-1 and HIF-2 in signaling pathways implicated in bone development and skeletal repair and outlined the molecular mechanism of regulation of downstream growth factors and protein molecules such as VEGF, EPO, and so on. All of these present an opportunity for developing therapies for bone regeneration.
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Chen J, Xiong GZ, Luo DY, Zou QQ, Wang YYJ, Bi GS. Daxx ameliorates abdominal aortic aneurysm through inhibiting the TGF-β1-mediated PI3K/AKT/ID2 signaling pathway. EUR J INFLAMM 2022. [DOI: 10.1177/1721727x221091532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background Abdominal aortic aneurysm (AAA) is a potentially life-threatening vascular abnormality, that, if ruptured, is almost universally fatal without repair, and is associated with up to 50% mortality even if repaired in hospital. To date, there is no drug therapy that has clinically proven benefit to reduce or prevent expansion of AAA. The aim of this study was to investigate whether Daxx could affect AAA through inhibiting the PI3K/AKT/ID2 signaling pathway mediated by transforming growth factor β-1 (TGFβ1). Methods The AAA model was constructed by injecting angiotensin Ⅱ (Ang-Ⅱ) into rats, and the Daxx lentivirus vector was constructed. Hematoxylin and eosin (HE) staining was used to detect the wall thickness of the abdominal aorta in rats. The gene and protein expressions in abdominal aortic tissues were detected utilizing western blot, immunohistochemistry (IHC) and fluorescence quantitative real-time polymerase chain reaction (qRT-PCR). Finally, the concentration of TGF-β1 in abdominal aortic tissue was determined by ELISA. Results The abdominal aortic wall thickness was decreased in the Daxx expression group (by HE staining), and Daxx overexpression markedly reduced the protein expression levels of MMP2 and MMP9. Proteins related to the PI3K/AKT/ID2 signaling pathway were highly enhanced in the aneurysm wall of rats, but were reduced following Daxx addition. Moreover, Daxx reduced the damage to elastin (by IHC), and the expression levels of α-SMA and SM22α were up-regulated by Daxx (by qRT-PCR). The concentration of TGF-β1 was correlated with the activation of the PI3K/AKT/ID2 signaling pathway (by ELISA), whereas AKT overexpression weakened the inhibitory effect of Daxx. Conclusion Daxx ameliorated several mechanisms that contributed to expansion of AAA suppressing the tissue concentration of TGF-β1, thereby inhibiting the activation of the PI3K/AKT/ID2 signaling pathway. This evidence might form the basis to develop a therapeutic target for AAA.
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Affiliation(s)
- Jie Chen
- Department of Vascular Surgery, The Second Affiliated Hospital of University of South China, Hengyang, China
| | - Guo-zuo Xiong
- Department of Vascular Surgery, The Second Affiliated Hospital of University of South China, Hengyang, China
| | - Dong-yang Luo
- Department of Vascular Surgery, The Second Affiliated Hospital of University of South China, Hengyang, China
| | - Qing-qing Zou
- Department of Vascular Surgery, The Second Affiliated Hospital of University of South China, Hengyang, China
| | - Yang-yi-jing Wang
- Department of Vascular Surgery, The Second Affiliated Hospital of University of South China, Hengyang, China
| | - Guo-shan Bi
- Department of Vascular Surgery, The Second Affiliated Hospital of University of South China, Hengyang, China
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6
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Targeting SHIP1 and SHIP2 in Cancer. Cancers (Basel) 2021; 13:cancers13040890. [PMID: 33672717 PMCID: PMC7924360 DOI: 10.3390/cancers13040890] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Phosphoinositol signaling pathways and their dysregulation have been shown to have a fundamental role in health and disease, respectively. The SH2-containing 5′ inositol phosphatases, SHIP1 and SHIP2, are regulators of the PI3K/AKT pathway that have crucial roles in cancer progression. This review aims to summarize the role of SHIP1 and SHIP2 in cancer signaling and the immune response to cancer, the discovery and use of SHIP inhibitors and agonists as possible cancer therapeutics. Abstract Membrane-anchored and soluble inositol phospholipid species are critical mediators of intracellular cell signaling cascades. Alterations in their normal production or degradation are implicated in the pathology of a number of disorders including cancer and pro-inflammatory conditions. The SH2-containing 5′ inositol phosphatases, SHIP1 and SHIP2, play a fundamental role in these processes by depleting PI(3,4,5)P3, but also by producing PI(3,4)P2 at the inner leaflet of the plasma membrane. With the intent of targeting SHIP1 or SHIP2 selectively, or both paralogs simultaneously, small molecule inhibitors and agonists have been developed and tested in vitro and in vivo over the last decade in various disease models. These studies have shown promising results in various pre-clinical models of disease including cancer and tumor immunotherapy. In this review the potential use of SHIP inhibitors in cancer is discussed with particular attention to the molecular structure, binding site and efficacy of these SHIP inhibitors.
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7
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Isoalantolactone inhibits RANKL-induced osteoclast formation via multiple signaling pathways. Int Immunopharmacol 2020; 84:106550. [PMID: 32388216 DOI: 10.1016/j.intimp.2020.106550] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 12/12/2022]
Abstract
The metabolicosteopathy known as postmenopausal osteoporosisiscaused by disruption of the balance between bone resorption and osteogenesis, processes that are mediated by osteoclasts and osteoblasts, respectively. The current therapeutic approaches to treating osteoporosis have several limitations. In this study, we demonstrated that the natural chemical compound isoalantolactone (IAL) could inhibit osteoclastogenesis, without affecting osteogenesis. This is the first study reporting a role of IAL in suppressing the receptor activator of nuclear factor-kappa B ligand (RANKL)-induced osteoclast formation in a dose-dependent manner, and downregulating the expression of osteoclast-related marker genes. Furthermore, IAL abrogated the phosphorylation of c-Jun N-terminal kinase (JNK)/p38, NF-κB, and phosphatidylinositol 3-kinase (PI3K)-AKT, and also diminished the expression of osteoclastogenesis-related proteins. In conclusion, our results indicated that IAL has promise for the treatment of osteoporosis and other metabolicbone diseases.
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8
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Pedicone C, Fernandes S, Dungan OM, Dormann SM, Viernes DR, Adhikari AA, Choi LB, De Jong EP, Chisholm JD, Kerr WG. Pan-SHIP1/2 inhibitors promote microglia effector functions essential for CNS homeostasis. J Cell Sci 2020; 133:jcs238030. [PMID: 31780579 PMCID: PMC10682645 DOI: 10.1242/jcs.238030] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
We show here that both SHIP1 (Inpp5d) and its paralog SHIP2 (Inppl1) are expressed at protein level in microglia. To examine whether targeting of SHIP paralogs might influence microglial physiology and function, we tested the capacity of SHIP1-selective, SHIP2-selective and pan-SHIP1/2 inhibitors for their ability to impact on microglia proliferation, lysosomal compartment size and phagocytic function. We find that highly potent pan-SHIP1/2 inhibitors can significantly increase lysosomal compartment size, and phagocytosis of dead neurons and amyloid beta (Aβ)1-42 by microglia in vitro We show that one of the more-potent and water-soluble pan-SHIP1/2 inhibitors, K161, can penetrate the blood-brain barrier. Consistent with this, K161 increases the capacity of CNS-resident microglia to phagocytose Aβ and apoptotic neurons following systemic administration. These findings provide the first demonstration that small molecule modulation of microglia function in vivo is feasible, and suggest that dual inhibition of the SHIP1 and 2 paralogs can provide a novel means to enhance basal microglial homeostatic functions for therapeutic purposes in Alzheimer's disease and, possibly, other types of dementia where increased microglial function could be beneficial.
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Affiliation(s)
- Chiara Pedicone
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Sandra Fernandes
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Otto M Dungan
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Shawn M Dormann
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Dennis R Viernes
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Arijit A Adhikari
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Lydia B Choi
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Ebbing P De Jong
- Proteomics and Mass Spectrometry Core Facility, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - John D Chisholm
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - William G Kerr
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
- Department of Pediatrics, SUNY Upstate Medical University, Syracuse, NY 13210, USA
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9
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Zhou J, Di M, Han H. Upregulation of SHIP2 participates in the development of breast cancer via promoting Wnt/β-catenin signaling. Onco Targets Ther 2019; 12:7067-7077. [PMID: 31564892 PMCID: PMC6722435 DOI: 10.2147/ott.s223422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 08/21/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose Src homology 2-containing inositol 5-phosphatase 2 (SHIP2) gene is associated with arthrosclerosis, gastric cancer and diabetes. In this study, we revealed that overexpression of SHIP2 is closely implicated with the development of breast cancer (BC). Methods The BC tissue and adjacent cancerous tissue were obtained from BC patients who had underwent mastectomy. BC cells with either overexpression or knockdown of SHIP2 were analyzed to determine cell proliferation, migration, invasion and apoptosis using the CCK-8 assay, colony formation assay, scratch assay, transwell assay and flow cytometry, respectively. A rat BC xenograft model was constructed to explore the role of SHIP2 on tumor growth in vivo. Results The expression levels of SHIP2 in BC tissues and cells were significantly higher than those in adjacent tissues and normal breast cells, respectively. Silencing SHIP2 suppressed BC cells proliferation and promoted apoptosis. Overexpression of SHIP2 enhanced the cells migration/invasion in BC. Moreover, SHIP2 participated in the Wnt/β-catenin pathway by regulating GSK-3β and its downstream genes. β-Catenin activator LiCl could significantly eliminate the effect of si-SHIP2 on BC cells. Moreover, overexpression of SHIP2 increased tumor volume and weight in rat model, and Wnt/β-catenin pathway inhibitor ICG001 reversed the promoting effect of SHIP2 on tumorigenesis. Conclusion Upregulation of SHIP2 could increase the migration, invasion, proliferation, and decrease apoptosis in BC cells. Moreover, SHIP2 participated in the progression of BC via activating the Wnt/β-catenin pathway.
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Affiliation(s)
- Juan Zhou
- Department of Oncology, Liaocheng People's Hospital, Liaocheng City, Shandong Province 252000, People's Republic of China
| | - Manman Di
- Department of Oncology, Liaocheng People's Hospital, Liaocheng City, Shandong Province 252000, People's Republic of China
| | - Hui Han
- Department of Oncology, Liaocheng People's Hospital, Liaocheng City, Shandong Province 252000, People's Republic of China
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10
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Lu W, Xu W, Li J, Chen Y, Pan Y, Wu B. Effects of vascular endothelial growth factor and insulin growth factor‑1 on proliferation, migration, osteogenesis and vascularization of human carious dental pulp stem cells. Mol Med Rep 2019; 20:3924-3932. [PMID: 31485628 DOI: 10.3892/mmr.2019.10606] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/15/2019] [Indexed: 11/05/2022] Open
Affiliation(s)
- Wanyu Lu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Wenan Xu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jianjia Li
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yan Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yuhua Pan
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Buling Wu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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11
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So EY, Sun C, Wu KQ, Driesman A, Leggett S, Isaac M, Spangler T, Dubielecka-Szczerba PM, Reginato AM, Liang OD. Lipid phosphatase SHIP-1 regulates chondrocyte hypertrophy and skeletal development. J Cell Physiol 2019; 235:1425-1437. [PMID: 31287165 PMCID: PMC6879780 DOI: 10.1002/jcp.29063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/14/2019] [Indexed: 12/12/2022]
Abstract
SH2‐containing inositol‐5′‐phosphatase‐1 (SHIP‐1) controls the phosphatidylinositol‐3′‐kinase (PI3K) initiated signaling pathway by limiting cell membrane recruitment and activation of Akt. Despite the fact that many of the growth factors important to cartilage development and functions are able to activate the PI3K signal transduction pathway, little is known about the role of PI3K signaling in chondrocyte biology and its contribution to mammalian skeletogenesis. Here, we report that the lipid phosphatase SHIP‐1 regulates chondrocyte hypertrophy and skeletal development through its expression in osteochondroprogenitor cells. Global SHIP‐1 knockout led to accelerated chondrocyte hypertrophy and premature formation of the secondary ossification center in the bones of postnatal mice. Drastically higher vascularization and greater number of c‐kit + progenitors associated with sinusoids in the bone marrow also indicated more advanced chondrocyte hypertrophic differentiation in SHIP‐1 knockout mice than in wild‐type mice. In corroboration with the in vivo phenotype, SHIP‐1 deficient PDGFRα + Sca‐1 + osteochondroprogenitor cells exhibited rapid differentiation into hypertrophic chondrocytes under chondrogenic culture conditions in vitro. Furthermore, SHIP‐1 deficiency inhibited hypoxia‐induced cellular activation of Akt and extracellular‐signal‐regulated kinase (Erk) and suppressed hypoxia‐induced cell proliferation. These results suggest that SHIP‐1 is required for hypoxia‐induced growth signaling under physiological hypoxia in the bone marrow. In conclusion, the lipid phosphatase SHIP‐1 regulates skeletal development by modulating chondrogenesis and the hypoxia response of the osteochondroprogenitors during endochondral bone formation.
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Affiliation(s)
- Eui-Young So
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island.,Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Changqi Sun
- Division of Rheumatology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Keith Q Wu
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island.,Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Adam Driesman
- Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Susan Leggett
- Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Mauricio Isaac
- Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Travis Spangler
- Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Patrycja M Dubielecka-Szczerba
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Anthony M Reginato
- Division of Rheumatology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Olin D Liang
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island.,Department of Orthopaedics, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
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12
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Xu XY, He XT, Wang J, Li X, Xia Y, Tan YZ, Chen FM. Role of the P2X7 receptor in inflammation-mediated changes in the osteogenesis of periodontal ligament stem cells. Cell Death Dis 2019; 10:20. [PMID: 30622236 PMCID: PMC6325129 DOI: 10.1038/s41419-018-1253-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 11/06/2018] [Accepted: 12/03/2018] [Indexed: 02/06/2023]
Abstract
Accumulating evidence indicates that the pluripotency of periodontal ligament stem cells (PDLSCs) is compromised under inflammatory conditions; however, the underlying mechanisms remain largely unexplored. In this study, we hypothesize that the P2X7 receptor (P2X7R) is a key molecule linked to inflammation-associated impairment of PDLSCs. We first investigated P2X7R expression in PDLSCs under normal and inflammatory conditions and then determined the effect of a P2X7R agonist (BzATP) or antagonist (BBG) on PDLSC osteogenesis under various conditions. Gene-modified PDLSCs were used to further examine the role of P2X7R and the signaling pathway underlying P2X7R-enhanced osteogenesis. We found that inflammatory conditions decreased P2X7R expression in PDLSCs and reduced osteogenesis in these cells. In addition, activation of P2X7R by BzATP or overexpression of P2X7R via gene transduction reversed the inflammation-mediated decrease in PDLSC osteogenic differentiation. When selected osteogenesis-related signaling molecules were screened, the PI3K-AKT-mTOR pathway was identified as potentially involved in P2X7R-enhanced PDLSC osteogenesis. Our data reveal a crucial role for P2X7R in PDLSC osteogenesis under inflammatory conditions, suggesting a new therapeutic target to reverse or rescue inflammation-mediated changes in PDLSCs for future mainstream therapeutic uses.
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Affiliation(s)
- Xin-Yue Xu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Xiao-Tao He
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Jia Wang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Xuan Li
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yu Xia
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yi-Zhou Tan
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China.
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13
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Hibbs ML, Raftery AL, Tsantikos E. Regulation of hematopoietic cell signaling by SHIP-1 inositol phosphatase: growth factors and beyond. Growth Factors 2018; 36:213-231. [PMID: 30764683 DOI: 10.1080/08977194.2019.1569649] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
SHIP-1 is a hematopoietic-specific inositol phosphatase activated downstream of a multitude of receptors including those for growth factors, cytokines, antigen, immunoglobulin and toll-like receptor agonists where it exerts inhibitory control. While it is constitutively expressed in all immune cells, SHIP-1 expression is negatively regulated by the inflammatory and oncogenic micro-RNA miR-155. Knockout mouse studies have shown the importance of SHIP-1 in various immune cell subsets and have revealed a range of immune-mediated pathologies that are engendered due to loss of SHIP-1's regulatory activity, impelling investigations into the role of SHIP-1 in human disease. In this review, we provide an overview of the literature relating to the role of SHIP-1 in hematopoietic cell signaling and function, we summarize recent reports that highlight the dysregulation of the SHIP-1 pathway in cancers, autoimmune disorders and inflammatory diseases, and lastly we discuss the importance of SHIP-1 in restraining myeloid growth factor signaling.
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Affiliation(s)
- Margaret L Hibbs
- a Department of Immunology and Pathology , Alfred Medical Research and Education Precinct Monash University , Melbourne , Victoria , Australia
| | - April L Raftery
- a Department of Immunology and Pathology , Alfred Medical Research and Education Precinct Monash University , Melbourne , Victoria , Australia
| | - Evelyn Tsantikos
- a Department of Immunology and Pathology , Alfred Medical Research and Education Precinct Monash University , Melbourne , Victoria , Australia
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14
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Krystal G, Hamilton MJ, Bennewith KL. SHIP prevents metastasis. Aging (Albany NY) 2018; 8:837-8. [PMID: 27208543 PMCID: PMC4931836 DOI: 10.18632/aging.100964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 05/16/2016] [Indexed: 11/25/2022]
Affiliation(s)
- Gerald Krystal
- Terry Fox Laboratory, British Columbia Cancer Agency Research Centre, Vancouver, BC, Canada
| | - Melisa J Hamilton
- Department of Integrative Oncology, British Columbia Cancer Agency Research Centre, Vancouver, BC, Canada
| | - Kevin L Bennewith
- Department of Integrative Oncology, British Columbia Cancer Agency Research Centre, Vancouver, BC, Canada
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15
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Cai X, Xing J, Long CL, Peng Q, Humphrey MB. DOK3 Modulates Bone Remodeling by Negatively Regulating Osteoclastogenesis and Positively Regulating Osteoblastogenesis. J Bone Miner Res 2017; 32:2207-2218. [PMID: 28650106 PMCID: PMC5685877 DOI: 10.1002/jbmr.3205] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 06/09/2017] [Accepted: 06/21/2017] [Indexed: 11/10/2022]
Abstract
Osteoclastogenesis is essential for bone remodeling and normal skeletal maintenance. Receptor activator of NF-κB ligand (RANKL) promotes osteoclast differentiation and function but requires costimulation of immunoreceptor tyrosine-based activation motif (ITAM)-coupled immunoreceptors. Triggering receptor expressed on myeloid cells-2 (TREM2) coupled to ITAM-adaptor protein DNAX activation protein 12kDA (DAP12) provides costimulation of intracellular calcium signaling during osteoclastogenesis. Previously, we found that downstream of kinase-3 (DOK3) physically associates with DAP12 to inhibit toll-like receptor (TLR)-induced inflammatory signaling in macrophages. However, whether and how DOK3 modulates DAP12-dependent osteoclastogenesis is unknown and the focus of this study. Bone microarchitecture and histology of sex- and age-matched wild-type (WT) and DOK3-deficient (DOK3-/- ) mice were evaluated. Male and female DOK3-/- mice have significantly reduced trabecular bone mass compared with WT mice with increased TRAP+ osteoclasts in vivo. In vitro, DOK3-/- bone marrow-derived macrophages (BMMs) have increased macrophage colony-stimulating factor (M-CSF)-induced proliferation and increased sensitivity to RANKL-induced osteoclastogenesis. Compared with WT, DOK3-/- osteoclasts are significantly larger with more nuclei and have increased resorptive capacity. Mechanistically, DOK3 limits osteoclastogenesis by inhibiting activation of Syk and ERK in response to RANKL and M-CSF. DOK3 is phosphorylated in a DAP12-dependent manner and associates with Grb2 and Cbl. Compared with DAP12-/- mice with high bone mass, DOK3- and DAP12- doubly deficient mice (DKO) have normalized bone mass, indicating that DOK3 also limits DAP12-independent osteoclastogenesis in vivo. In vitro osteoclasts derived from DKO mice are mononuclear with poor resorptive capacity similar to DAP12-/- osteoclasts. Histomorphometry reveals that DOK3-/- mice also have reduced osteoblast parameters. DOK3-/- osteoblasts have reduced in vitro osteoblastogenesis and increased osteoprotegerin (OPG) to RANKL expression ratio compared with WT osteoblasts. Co-culture of WT and DOK3-/- osteoblasts with pre-osteoclasts reveals a reduced capacity of DOK3-/- osteoblasts to support osteoclastogenesis. These data indicate that DOK3 regulates bone remodeling by negatively regulating M-CSF- and RANKL-mediated osteoclastogenesis and positively regulating osteoblastogenesis. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Xiaofeng Cai
- Department of Medicine, University of Oklahoma Health Science Center, Oklahoma City, OK
| | - Junjie Xing
- Department of Medicine, University of Oklahoma Health Science Center, Oklahoma City, OK
| | - Courtney L Long
- Department of Medicine, University of Oklahoma Health Science Center, Oklahoma City, OK
| | - Qisheng Peng
- Key Laboratory for Zoonosis Research, Jilin University, Changchun, China
| | - Mary Beth Humphrey
- Department of Medicine, University of Oklahoma Health Science Center, Oklahoma City, OK
- Department of Veteran's Affairs, Oklahoma City, OK
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16
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Svitina H, Kyryk V, Skrypkina I, Kuchma M, Bukreieva T, Areshkov P, Shablii Y, Denis Y, Klymenko P, Garmanchuk L, Ostapchenko L, Lobintseva G, Shablii V. Placenta-derived multipotent cells have no effect on the size and number of DMH-induced colon tumors in rats. Exp Ther Med 2017; 14:2135-2147. [PMID: 28962134 PMCID: PMC5609206 DOI: 10.3892/etm.2017.4792] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 04/21/2017] [Indexed: 12/12/2022] Open
Abstract
Transplantation of placenta-derived multipotent cells (PDMCs) is a promising approach for cell therapy to treat inflammation-associated colon diseases. However, the effect of PDMCs on colon cancer cells remains unknown. The aim of the present study was to characterize PDMCs obtained from human (hPDMCs) and rat (rPDMCs) placentas and to evaluate their impact on colon cancer progression in rats. PDMCs were obtained from human and rat placentas by tissue explant culturing. Stemness- and trophoblast-related gene expression was studied using reverse transcription-polymerase chain reaction (RT-PCR), and surface markers and intracellular proteins were detected using flow cytometry and immunofluorescence, respectively. Experimental colon carcinogenesis was induced in male albino Wistar rats by injecting 20 mg/kg dimethylhydrazine (DMH) once a week for 20 consecutive weeks. The administration of rPDMCs and hPDMC was performed at week 22 after the initial DMH-injection. All animals were sacrificed through carbon dioxide asphyxiation at week 5 after cell transplantation. The number and size of each tumor lesion was calculated. The type of tumor was determined by standard histological methods. Cell engraftment was determined by PCR and immunofluorescence. Results demonstrated that rPDMCs possessed the immunophenotype and differentiation potential inherent in MSCs; however, hPDMCs exhibited a lower expression of cluster of differentiation 44 and did not express trophoblast-associated genes. The data of the present study indicated that PDMCs may engraft in different tissues but do not significantly affect DMH-induced tumor growth during short-term observations.
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Affiliation(s)
- Hanna Svitina
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine.,Department of Biochemistry, Educational and Scientific Centre "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Vitaliy Kyryk
- Department of Cell and Tissue Technologies, State Institute of Genetics and Regenerative Medicine of Academy of Medicine of Ukraine, 04114 Kyiv, Ukraine
| | - Inessa Skrypkina
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine.,Department of Functional Genomics, Institute of Molecular Biology and Genetics of National Academy of Science of Ukraine, 03680 Kyiv, Ukraine
| | - Maria Kuchma
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine.,Department of Functional Genomics, Institute of Molecular Biology and Genetics of National Academy of Science of Ukraine, 03680 Kyiv, Ukraine
| | - Tetiana Bukreieva
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine
| | - Pavlo Areshkov
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine.,Department of Functional Genomics, Institute of Molecular Biology and Genetics of National Academy of Science of Ukraine, 03680 Kyiv, Ukraine
| | - Yulia Shablii
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine
| | - Yevheniy Denis
- Department of Biochemistry, Educational and Scientific Centre "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Pavlo Klymenko
- Department of Cell and Tissue Technologies, State Institute of Genetics and Regenerative Medicine of Academy of Medicine of Ukraine, 04114 Kyiv, Ukraine
| | - Liudmyla Garmanchuk
- Department of Biochemistry, Educational and Scientific Centre "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Liudmyla Ostapchenko
- Department of Biochemistry, Educational and Scientific Centre "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
| | - Galina Lobintseva
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine
| | - Volodymyr Shablii
- Cell Culture Laboratory, Cryobank, Institute of Cell Therapy, 03680 Kyiv, Ukraine.,Department of Biochemistry, Educational and Scientific Centre "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
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17
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Thomas MP, Erneux C, Potter BVL. SHIP2: Structure, Function and Inhibition. Chembiochem 2017; 18:233-247. [DOI: 10.1002/cbic.201600541] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Mark P. Thomas
- Department of Pharmacy and Pharmacology; University of Bath; Claverton Down Bath BA2 7AY UK
| | - Christophe Erneux
- I.R.I.B.H.M.; Université Libre de Bruxelles; Campus Erasme 808 Route de Lennik 1070 Brussels Belgium
| | - Barry V. L. Potter
- Drug Discovery and Medicinal Chemistry; Department of Pharmacology; University of Oxford; Mansfield Road Oxford OX1 3QT UK
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18
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Srivastava N, Iyer S, Sudan R, Youngs C, Engelman RW, Howard KT, Russo CM, Chisholm JD, Kerr WG. A small-molecule inhibitor of SHIP1 reverses age- and diet-associated obesity and metabolic syndrome. JCI Insight 2016; 1. [PMID: 27536730 DOI: 10.1172/jci.insight.88544] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Low-grade chronic inflammation is a key etiological phenomenon responsible for the initiation and perpetuation of obesity and diabetes. Novel therapeutic approaches that can specifically target inflammatory pathways are needed to avert this looming epidemic of metabolic disorders. Genetic and chemical inhibition of SH2-containing inositol 5' phosphatase 1 (SHIP1) has been associated with systemic expansion of immunoregulatory cells that promote a lean-body state; however, SHIP1 function in immunometabolism has never been assessed. This led us to investigate the role of SHIP1 in metabolic disorders during excess caloric intake in mice. Using a small-molecule inhibitor of SHIP1 (SHIPi), here we show that SHIPi treatment in mice significantly reduces body weight and fat content, improves control of blood glucose and insulin sensitivity, and increases energy expenditure, despite continued consumption of a high-fat diet. Additionally, SHIPi reduces age-associated fat in mice. We found that SHIPi treatment reverses diet-associated obesity by attenuating inflammation in the visceral adipose tissue (VAT). SHIPi treatment increases IL-4-producing eosinophils in VAT and consequently increases both alternatively activated macrophages and myeloid-derived suppressor cells. In addition, SHIPi decreases the number of IFN-γ-producing T cells and NK cells in VAT. Thus, SHIPi represents an approach that permits control of obesity and diet-induced metabolic syndrome without apparent toxicity.
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Affiliation(s)
- Neetu Srivastava
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, New York, USA
| | - Sonia Iyer
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, New York, USA
| | - Raki Sudan
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, New York, USA
| | - Christie Youngs
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, New York, USA
| | - Robert W Engelman
- Departments of Pathology and Cell Biology and Pediatrics, H. Lee Moffitt Comprehensive Cancer Center and Research Institute, University of South Florida, Florida, USA
| | - Kyle T Howard
- Department of Chemistry, Syracuse University, Syracuse, New York, USA
| | | | - John D Chisholm
- Department of Chemistry, Syracuse University, Syracuse, New York, USA
| | - William G Kerr
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, New York, USA; Department of Chemistry, Syracuse University, Syracuse, New York, USA; Department of Pediatrics, SUNY Upstate Medical University, Syracuse, New York, USA
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19
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Fernandes S, Brooks R, Gumbleton M, Park MY, Russo CM, Howard KT, Chisholm JD, Kerr WG. SHIPi Enhances Autologous and Allogeneic Hematolymphoid Stem Cell Transplantation. EBioMedicine 2015; 2:205-213. [PMID: 26052545 PMCID: PMC4452032 DOI: 10.1016/j.ebiom.2015.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Hematopoietic stem cell transplantation (HSCT) is a highly effective procedure enabling long-term survival for patients with hematologic malignancy or heritable defects. Although there has been a dramatic increase in the success rate of HSCT over the last two decades, HSCT can result in serious, sometimes untreatable disease due to toxic conditioning regimens and Graft-versus-Host-Disease. Studies utilizing germline knockout mice have discovered several candidate genes that could be targeted pharmacologically to create a more favorable environment for transplant success. SHIP1 deficiency permits improved engraftment of hematopoietic stem-progenitor cells (HS-PCs) and produces an immunosuppressive microenvironment ideal for incoming allogeneic grafts. The recent development of small molecule SHIP1 inhibitors has opened a different therapeutic approach by creating transient SHIP1-deficiency. Here we show that SHIP1 inhibition (SHIPi) mobilizes functional HS-PC, accelerates hematologic recovery, and enhances donor HS-PC engraftment in both allogeneic and autologous transplant settings. We also observed the expansion of key cell populations known to suppress host-reactive cells formed during engraftment. Therefore, SHIPi represents a non-toxic, new therapeutic that has significant potential to improve the success and safety of therapies that utilize autologous and allogeneic HSCT. SHIPi facilitates HS-PC mobilization. SHIPi facilitates engraftment of autologous BM without myeloablation. SHIPi enhances engraftment of allogeneic BM without cytotoxic effects on the host.
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Affiliation(s)
- Sandra Fernandes
- Dept. of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Robert Brooks
- Dept. of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Matthew Gumbleton
- Dept. of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Mi-Young Park
- Dept. of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | | | - Kyle T Howard
- Dept. of Chemistry, Syracuse University, Syracuse, NY, 13210, USA
| | - John D Chisholm
- Dept. of Chemistry, Syracuse University, Syracuse, NY, 13210, USA
| | - William G Kerr
- Dept. of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA ; Dept. of Chemistry, Syracuse University, Syracuse, NY, 13210, USA ; Dept. of Pediatrics, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
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20
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Gumbleton M, Vivier E, Kerr WG. SHIP1 intrinsically regulates NK cell signaling and education, resulting in tolerance of an MHC class I-mismatched bone marrow graft in mice. THE JOURNAL OF IMMUNOLOGY 2015; 194:2847-54. [PMID: 25687756 DOI: 10.4049/jimmunol.1402930] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
NK cells are an important component of host immune defense against malignancy and infection. NK cells are educated by MHC class I ligands to ensure self-tolerance while also promoting lytic competency against altered self and damaged self targets. However, the intracellular molecular events that culminate in tolerance and functional competency of educated NK cells remain undefined. Mice with germline deficiency in SHIP1 were shown to have a defective NK cell compartment. However, SHIP1 is expressed in all hematopoietic lineages, and consequently several hematolymphoid phenotypes have already been identified in certain cell types that are the result of SHIP1 deficiency in cells in separate and distinct lineages, that is, cell-extrinsic phenotypes. Thus, it was previously impossible to determine the NK cell-intrinsic role of SHIP1. In the present study, through the creation of an NK cell-specific deletion mouse model of SHIP1, we show that SHIP1 plays a profound NK lineage-intrinsic role in NK cell homeostasis, development, education, and cytokine production. Moreover, we show SHIP1 expression by NK cells is required for in vivo-mismatched bone marrow allograft rejection as well as for NK memory responses to hapten.
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Affiliation(s)
- Matthew Gumbleton
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, NY 13210
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University Unité Mixte 2, 13288 Marseille, France; INSERM Unité 1104, 13288 Marseille, France; Centre National de la Recherche Scientifique Unité Mixte de Recherche 7280, 13288 Marseille, France; Service d'Immunologie, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception, 13385 Marseille, France
| | - William G Kerr
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, NY 13210; Department of Pediatrics, State University of New York Upstate Medical University, Syracuse, NY 13210; and Department of Chemistry, Syracuse University, Syracuse, NY 13210
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21
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Iyer S, Brooks R, Gumbleton M, Kerr WG. SHIP1-expressing mesenchymal stem cells regulate hematopoietic stem cell homeostasis and lineage commitment during aging. Stem Cells Dev 2015; 24:1073-81. [PMID: 25525673 DOI: 10.1089/scd.2014.0501] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Hematopoietic stem cell (HSC) self-renewal and lineage choice are subject to intrinsic control. However, this intrinsic regulation is also impacted by external cues provided by niche cells. There are multiple cellular components that participate in HSC support with the mesenchymal stem cell (MSC) playing a pivotal role. We had previously identified a role for SH2 domain-containing inositol 5'-phosphatase-1 (SHIP1) in HSC niche function through analysis of mice with germline or induced SHIP1 deficiency. In this study, we show that the HSC compartment expands significantly when aged in a niche that contains SHIP1-deficient MSC; however, this expanded HSC compartment exhibits a strong bias toward myeloid differentiation. In addition, we show that SHIP1 prevents chronic G-CSF production by the aging MSC compartment. These findings demonstrate that intracellular signaling by SHIP1 in MSC is critical for the control of HSC output and lineage commitment during aging. These studies increase our understanding of how myeloid bias occurs in aging and thus could have implications for the development of myeloproliferative disease in aging.
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Affiliation(s)
- Sonia Iyer
- 1 Department of Microbiology & Immunology, SUNY Upstate Medical University , Syracuse, New York
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22
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TLR signaling that induces weak inflammatory response and SHIP1 enhances osteogenic functions. Bone Res 2014; 2:14031. [PMID: 26273527 PMCID: PMC4472124 DOI: 10.1038/boneres.2014.31] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/12/2014] [Accepted: 09/03/2014] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptor (TLR)-mediated inflammatory response could negatively affect bone metabolism. In this study, we determined how osteogenesis is regulated during inflammatory responses that are downstream of TLR signaling. Human primary osteoblasts were cultured in collagen gels. Pam3CSK4 (P3C) and Escherichia coli lipopolysaccharide (EcLPS) were used as TLR2 and TLR4 ligand respectively. Porphyromonas gingivalis LPS having TLR2 activity with either TLR4 agonism (Pg1690) or TLR4 antagonism (Pg1449) and mutant E. coli LPS (LPxE/LPxF/WSK) were used. IL-1β, SH2-containing inositol phosphatase-1 (SHIP1) that has regulatory roles in osteogenesis, alkaline phosphatase and mineralization were analyzed. 3α-Aminocholestane (3AC) was used to inhibit SHIP1. Our results suggest that osteoblasts stimulated by P3C, poorly induced IL-1β but strongly upregulated SHIP1 and enhanced osteogenic mediators. On the contrary, EcLPS significantly induced IL-1β and osteogenic mediators were not induced. While Pg1690 downmodulated osteogenic mediators, Pg1449 enhanced osteogenic responses, suggesting that TLR4 signaling annuls osteogenesis even with TLR2 activity. Interestingly, mutant E. coli LPS that induces weak inflammation upregulated osteogenesis, but SHIP1 was not induced. Moreover, inhibiting SHIP1 significantly upregulated TLR2-mediated inflammatory response and downmodulated osteogenesis. In conclusion, these results suggest that induction of weak inflammatory response through TLR2 (with SHIP1 activity) and mutant TLR4 ligands could enhance osteogenesis.
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