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Bellani S, Molyneaux PL, Maher TM, Spagnolo P. Potential of αvβ6 and αvβ1 integrin inhibition for treatment of idiopathic pulmonary fibrosis. Expert Opin Ther Targets 2024:1-11. [PMID: 38949181 DOI: 10.1080/14728222.2024.2375375] [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: 03/23/2024] [Accepted: 06/28/2024] [Indexed: 07/02/2024]
Abstract
INTRODUCTION Idiopathic pulmonary fibrosis (IPF) is a chronic progressive interstitial lung disease of unknown cause with a dismal prognosis. Nintedanib and Pirfenidone are approved worldwide for the treatment of IPF, but they only slow the rate of functional decline and disease progression. Therefore, there is an urgent need for more efficacious and better tolerated drugs. AREAS COVERED αvβ6 and αvβ1 are two integrins overexpressed in fibrotic tissue, which play a critical role in the development of lung fibrosis. They act by converting transforming growth factor (TGF)-β, one of the most important profibrotic cytokine, in its active form. Here, we summarize and critically discuss the potential of a dual αvβ6/αvβ1 integrin inhibitor for the treatment of IPF. EXPERT OPINION Bexotegrast, a dual αvβ6/αvβ1 integrin inhibitor, has the potential to slow or even halt disease progression in IPF. Indeed, the strong pre-clinical rationale and promising early phase clinical trial data have raised expectations.
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Affiliation(s)
- Serena Bellani
- Respiratory Disease Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Philip L Molyneaux
- National Heart and Lung Institute, Imperial College, London, UK
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Hospitals, London, UK
| | - Toby M Maher
- Hastings Centre for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Paolo Spagnolo
- Respiratory Disease Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
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Sabat M, Carney DW, Hernandez-Torres G, Gibson TS, Balakrishna D, Zou H, Xu R, Chen CH, de Jong R, Dougan DR, Qin L, Bigi-Botterill SV, Chambers A, Miura J, Johnson LK, Ermolieff J, Johns D, Selimkhanov J, Kwok L, DeMent K, Proffitt C, Vu P, Lindsey EA, Ivetac T, Jennings A, Wang H, Manam P, Santos C, Fullenwider C, Manohar R, Flick AC. Design and Discovery of a Potent and Selective Inhibitor of Integrin αvβ1. J Med Chem 2024; 67:10306-10320. [PMID: 38872300 DOI: 10.1021/acs.jmedchem.4c00743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Selective inhibition of the RGD (Arg-Gly-Asp) integrin αvβ1 has been recently identified as an attractive therapeutic approach for the treatment of liver fibrosis given its function, target expression, and safety profile. Our identification of a non-RGD small molecule lead followed by focused, systematic changes to the core structure utilizing a crystal structure, in silico modeling, and a tractable synthetic approach resulted in the identification of a potent small molecule exhibiting a remarkable affinity for αvβ1 relative to several other integrin isoforms measured. Azabenzimidazolone 25 demonstrated antifibrotic efficacy in an in vivo rat liver fibrosis model and represents a tool compound capable of further exploring the biological consequences of selective αvβ1 inhibition.
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Affiliation(s)
- Mark Sabat
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Daniel W Carney
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Gloria Hernandez-Torres
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Tony S Gibson
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Deepika Balakrishna
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Hua Zou
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Rui Xu
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Chien-Hung Chen
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Ron de Jong
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Douglas R Dougan
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Ling Qin
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Simone V Bigi-Botterill
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Alison Chambers
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Joanne Miura
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Lucas K Johnson
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Jacques Ermolieff
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Deidre Johns
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Jangir Selimkhanov
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Lily Kwok
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Kevin DeMent
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Chris Proffitt
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Phong Vu
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Erick A Lindsey
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Tony Ivetac
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Andy Jennings
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Haixia Wang
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Padma Manam
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Cipriano Santos
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Cody Fullenwider
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Rohan Manohar
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
| | - Andrew C Flick
- Gastroenterology Drug Discovery Unit, Takeda Development Center Americas, Inc., 9625 Towne Centre Dr., San Diego, California 92121 United States
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Camp D, Venkatesh B, Solianova V, Varela L, Goult BT, Tanentzapf G. The actin binding sites of talin have both distinct and complementary roles in cell-ECM adhesion. PLoS Genet 2024; 20:e1011224. [PMID: 38662776 PMCID: PMC11075885 DOI: 10.1371/journal.pgen.1011224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 05/07/2024] [Accepted: 03/12/2024] [Indexed: 05/08/2024] Open
Abstract
Cell adhesion requires linkage of transmembrane receptors to the cytoskeleton through intermediary linker proteins. Integrin-based adhesion to the extracellular matrix (ECM) involves large adhesion complexes that contain multiple cytoskeletal adapters that connect to the actin cytoskeleton. Many of these adapters, including the essential cytoskeletal linker Talin, have been shown to contain multiple actin-binding sites (ABSs) within a single protein. To investigate the possible role of having such a variety of ways of linking integrins to the cytoskeleton, we generated mutations in multiple actin binding sites in Drosophila talin. Using this approach, we have been able to show that different actin-binding sites in talin have both unique and complementary roles in integrin-mediated adhesion. Specifically, mutations in either the C-terminal ABS3 or the centrally located ABS2 result in lethality showing that they have unique and non-redundant function in some contexts. On the other hand, flies simultaneously expressing both the ABS2 and ABS3 mutants exhibit a milder phenotype than either mutant by itself, suggesting overlap in function in other contexts. Detailed phenotypic analysis of ABS mutants elucidated the unique roles of the talin ABSs during embryonic development as well as provided support for the hypothesis that talin acts as a dimer in in vivo contexts. Overall, our work highlights how the ability of adhesion complexes to link to the cytoskeleton in multiple ways provides redundancy, and consequently robustness, but also allows a capacity for functional specialization.
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Affiliation(s)
- Darius Camp
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Bhavya Venkatesh
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Veronika Solianova
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lorena Varela
- School of Biosciences, University of Kent, Canterbury, Kent, United Kingdom
| | - Benjamin T. Goult
- School of Biosciences, University of Kent, Canterbury, Kent, United Kingdom
- Department of Biochemistry, Cell & Systems Biology, Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, United Kingdom
| | - Guy Tanentzapf
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada
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Tucureanu MM, Ciortan L, Macarie RD, Mihaila AC, Droc I, Butoi E, Manduteanu I. The Specific Molecular Changes Induced by Diabetic Conditions in Valvular Endothelial Cells and upon Their Interactions with Monocytes Contribute to Endothelial Dysfunction. Int J Mol Sci 2024; 25:3048. [PMID: 38474293 DOI: 10.3390/ijms25053048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/28/2024] [Accepted: 03/02/2024] [Indexed: 03/14/2024] Open
Abstract
Aortic valve disease (AVD) represents a global public health challenge. Research indicates a higher prevalence of diabetes in AVD patients, accelerating disease advancement. Although the specific mechanisms linking diabetes to valve dysfunction remain unclear, alterations of valvular endothelial cells (VECs) homeostasis due to high glucose (HG) or their crosstalk with monocytes play pivotal roles. The aim of this study was to determine the molecular signatures of VECs in HG and upon their interaction with monocytes in normal (NG) or high glucose conditions and to propose novel mechanisms underlying valvular dysfunction in diabetes. VECs and THP-1 monocytes cultured in NG/HG conditions were used. The RNAseq analysis revealed transcriptomic changes in VECs, in processes related to cytoskeleton regulation, focal adhesions, cellular junctions, and cell adhesion. Key molecules were validated by qPCR, Western blot, and immunofluorescence assays. The alterations in cytoskeleton and intercellular junctions impacted VEC function, leading to changes in VECs adherence to extracellular matrix, endothelial permeability, monocyte adhesion, and transmigration. The findings uncover new molecular mechanisms of VEC dysfunction in HG conditions and upon their interaction with monocytes in NG/HG conditions and may help to understand mechanisms of valvular dysfunction in diabetes and to develop novel therapeutic strategies in AVD.
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Affiliation(s)
- Monica Madalina Tucureanu
- Biopathology and Therapy of Inflammation, Institute of Cellular Biology and Pathology "Nicolae Simionescu", 050568 Bucharest, Romania
| | - Letitia Ciortan
- Biopathology and Therapy of Inflammation, Institute of Cellular Biology and Pathology "Nicolae Simionescu", 050568 Bucharest, Romania
| | - Razvan Daniel Macarie
- Biopathology and Therapy of Inflammation, Institute of Cellular Biology and Pathology "Nicolae Simionescu", 050568 Bucharest, Romania
| | - Andreea Cristina Mihaila
- Biopathology and Therapy of Inflammation, Institute of Cellular Biology and Pathology "Nicolae Simionescu", 050568 Bucharest, Romania
| | - Ionel Droc
- Cardiovascular Surgery Department, Central Military Hospital, 010825 Bucharest, Romania
| | - Elena Butoi
- Biopathology and Therapy of Inflammation, Institute of Cellular Biology and Pathology "Nicolae Simionescu", 050568 Bucharest, Romania
| | - Ileana Manduteanu
- Biopathology and Therapy of Inflammation, Institute of Cellular Biology and Pathology "Nicolae Simionescu", 050568 Bucharest, Romania
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Tsai CC, Yang YCSH, Chen YF, Huang LY, Yang YN, Lee SY, Wang WL, Lee HL, Whang-Peng J, Lin HY, Wang K. Integrins and Actions of Androgen in Breast Cancer. Cells 2023; 12:2126. [PMID: 37681860 PMCID: PMC10486718 DOI: 10.3390/cells12172126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/16/2023] [Accepted: 08/19/2023] [Indexed: 09/09/2023] Open
Abstract
Androgen has been shown to regulate male physiological activities and cancer proliferation. It is used to antagonize estrogen-induced proliferative effects in breast cancer cells. However, evidence indicates that androgen can stimulate cancer cell growth in estrogen receptor (ER)-positive and ER-negative breast cancer cells via different types of receptors and different mechanisms. Androgen-induced cancer growth and metastasis link with different types of integrins. Integrin αvβ3 is predominantly expressed and activated in cancer cells and rapidly dividing endothelial cells. Programmed death-ligand 1 (PD-L1) also plays a vital role in cancer growth. The part of integrins in action with androgen in cancer cells is not fully mechanically understood. To clarify the interactions between androgen and integrin αvβ3, we carried out molecular modeling to explain the potential interactions of androgen with integrin αvβ3. The androgen-regulated mechanisms on PD-L1 and its effects were also addressed.
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Affiliation(s)
- Chung-Che Tsai
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; (C.-C.T.); (Y.-F.C.)
- Graduate Institute of Nanomedicine and Medical Engineering, College of Medical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Chen S. H. Yang
- Joint Biobank, Office of Human Research, Taipei Medical University, Taipei 11031, Taiwan;
| | - Yi-Fong Chen
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; (C.-C.T.); (Y.-F.C.)
| | - Lin-Yi Huang
- Department of Pediatrics, E-DA Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (L.-Y.H.); (Y.-N.Y.)
| | - Yung-Ning Yang
- Department of Pediatrics, E-DA Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (L.-Y.H.); (Y.-N.Y.)
- School of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Sheng-Yang Lee
- Dentistry, Wan-Fang Medical Center, Taipei Medical University, Taipei 11031, Taiwan;
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Wen-Long Wang
- Department of Life Science, Fu Jen Catholic University, New Taipei City 242, Taiwan;
| | - Hsin-Lun Lee
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 110, Taiwan
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei 11031, Taiwan
| | | | - Hung-Yun Lin
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; (C.-C.T.); (Y.-F.C.)
- Cancer Center, Wan Fang Hospital, Taipei Medical University, Taipei 11031, Taiwan;
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Traditional Herbal Medicine Research Center of Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Albany, NY 12208, USA
| | - Kuan Wang
- Graduate Institute of Nanomedicine and Medical Engineering, College of Medical Engineering, Taipei Medical University, Taipei 11031, Taiwan
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Ma C, Lu T, He Y, Guo D, Duan L, Jia R, Cai D, Gao T, Chen Z, Xue B, Li T, He Y. Comprehensive analysis of autophagy-related gene expression profiles identified five gene biomarkers associated with immune infiltration and advanced plaques in carotid atherosclerosis. Orphanet J Rare Dis 2023; 18:66. [PMID: 36959587 PMCID: PMC10037854 DOI: 10.1186/s13023-023-02660-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 03/11/2023] [Indexed: 03/25/2023] Open
Abstract
BACKGROUND Autophagy plays an important role in the progression of carotid atherosclerosis (CAS). This study aimed to identify hub autophagy-related genes (ATGs) associated with CAS. METHODS GSE43292 and GSE28829 datasets of early and advanced CAS plaques were enrolled from the Gene Expression Omnibus (GEO) database. A comprehensive analysis of differentially expressed ATGs (DE-ATGs) was conducted. Functional enrichment assay was used to explore biological functions of DE-ATGs. The hub ATGs were identified by protein-protein interaction (PPI) network. Immunohistochemistry (IHC) and Real-time reverse transcription-quantitative polymerase chain reaction (RT-qPCR) were used to validate hub ATGs at the protein level and mRNA level. Correlation analysis of hub ATGs with immune cells was also conducted. In addition, a competitive endogenous RNA (ceRNA) network was constructed, and diagnostic value of hub ATGs was evaluated. RESULTS A total of 19 DE-ATGs were identified in early and advanced CAS plaques. Functional enrichment analysis of DE-ATGs suggested that they were closely correlated to autophagy, apoptosis, and lipid regulation. Moreover, 5 hub ATGs, including TNFSF10, ITGA6, CTSD, CCL2, and CASP1, were identified and further verified by IHC. The area under the curve (AUC) values of the 5 hub ATGs were 0.818, 0.732, 0.792, 0.814, and 0.812, respectively. Competing endogenous RNA (ceRNA) networks targeting the hub ATGs were also constructed. In addition, the 5 hub ATGs were found to be closely associated with immune cell infiltration in CAS. CONCLUSION In this study, we identified 5 hub ATGs including CASP1, CCL2, CTSD, ITGA6 and TNFSF10, which could serve as candidate diagnostic biomarkers and therapeutic targets.
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Affiliation(s)
- Chi Ma
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China
| | - Taoyuan Lu
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China
| | - Yanyan He
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China
- Department of Cerebrovascular Disease, Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
| | - Dehua Guo
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China
| | - Lin Duan
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China
- Department of Cerebrovascular Disease, Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
| | - Rufeng Jia
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China
| | - Dongyang Cai
- Department of Neurosurgery, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
| | - Tao Gao
- Department of Neurosurgery, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
| | - Zhongcan Chen
- Department of Neurosurgery, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
| | - Binghua Xue
- Department of Endocrinology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China
| | - Tianxiao Li
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China.
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China.
- Department of Cerebrovascular Disease, Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China.
| | - Yingkun He
- Department of Cerebrovascular Disease, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, 450003, China.
- Henan Provincial NeuroInterventional Engineering Research Center, Henan International Joint Laboratory of Cerebrovascular Disease, and Henan Engineering Research Center of Cerebrovascular Intervention Innovation, Zhengzhou, Henan, 450003, China.
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Chen J, Wu F, Hou E, Zeng J, Li F, Gao H. Exosomal microRNA Therapy for Non-Small-Cell Lung Cancer. Technol Cancer Res Treat 2023; 22:15330338231210731. [PMID: 37936417 PMCID: PMC10631355 DOI: 10.1177/15330338231210731] [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: 04/21/2023] [Revised: 08/31/2023] [Accepted: 10/12/2023] [Indexed: 11/09/2023] Open
Abstract
With the progress of molecular diagnosis research on non-small cell lung cancer (NSCLC) cells, four identified categories of microRNAs have been found to be related to disease diagnosis, diagnosis of treatment resistance, prediction of prognosis, and drugs for treatment. To date, nine target mRNA/signal pathways have been confirmed for microRNA drug therapy both in vitro and in vivo. When microRNA drugs enter blood vessels, they target the tumor site and play a similar role to that of targeted drugs. However, whether they will produce serious off-target effects remains unknown, and further clinical research is needed. This review provides the first summary of microRNA therapy for NSCLC.
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Affiliation(s)
- Jibing Chen
- Jinan University, Guangzhou, Guangdong, China
- Fuda Cancer Hospital Affiliated to Jinan University, Guangzhou, Guangdong, China
- Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Fasheng Wu
- Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Encun Hou
- Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Jianying Zeng
- Jinan University, Guangzhou, Guangdong, China
- Fuda Cancer Hospital Affiliated to Jinan University, Guangzhou, Guangdong, China
| | - Fujun Li
- Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Hongjun Gao
- Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
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Bioimaging Nucleic-Acid Aptamers with Different Specificities in Human Glioblastoma Tissues Highlights Tumoral Heterogeneity. Pharmaceutics 2022; 14:pharmaceutics14101980. [PMID: 36297416 PMCID: PMC9609998 DOI: 10.3390/pharmaceutics14101980] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
Nucleic-acid aptamers are of strong interest for diagnosis and therapy. Compared with antibodies, they are smaller, stable upon variations in temperature, easy to modify, and have higher tissue-penetration abilities. However, they have been little described as detection probes in histology studies of human tissue sections. In this study, we performed fluorescence imaging with two aptamers targeting cell-surface receptors EGFR and integrin α5β1, both involved in the aggressiveness of glioblastoma. The aptamers’ cell-binding specificities were confirmed using confocal imaging. The affinities of aptamers for glioblastoma cells expressing these receptors were in the 100–300 nM range. The two aptamers were then used to detect EGFR and integrin α5β1 in human glioblastoma tissues and compared with antibody labeling. Our aptafluorescence assays proved to be able to very easily reveal, in a one-step process, not only inter-tumoral glioblastoma heterogeneity (differences observed at the population level) but also intra-tumoral heterogeneity (differences among cells within individual tumors) when aptamers with different specificities were used simultaneously in multiplexing labeling experiments. The discussion also addresses the strengths and limitations of nucleic-acid aptamers for biomarker detection in histology.
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9
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Antalíková J, Sečová P, Michalková K, Horovská Ľ, Páleníková V, Jankovičová J. Expression of αV integrin and its potential partners in bull reproductive tissues, germ cells and spermatozoa. Int J Biol Macromol 2022; 209:542-551. [PMID: 35413326 DOI: 10.1016/j.ijbiomac.2022.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/07/2021] [Accepted: 04/01/2022] [Indexed: 12/14/2022]
Abstract
Integrins are transmembrane receptors expressed in all nucleated mammalian cells, critically involved in cell-matrix adhesion and cell-cell interactions that modulate many signalling cascades. It is assumed that integrins also provide essential functions of the reproductive system. In this study, we describe the detailed localization and distribution of αV integrin in the plasma membrane of bull sperm head and tail. Integrin αV was observed in the area of forming acrosome in developing sperm since the stage of round spermatids and persists in the acrosome during epididymal maturation and ejaculation till the acrosomal exocytosis. We detected CD9 and CD81 tetraspanins as the potential partners of αV integrin. Their similar staining pattern in testicular tissue suggested the involvement of these molecules in the tetraspanin web of "testisomes". Moreover, the complex of αV with β1 and β3 integrin subunits cannot be excluded at least in sperm. The presented findings contribute to understanding the mutual action of integrins and tetraspanins during sperm development and maturation.
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Affiliation(s)
- Jana Antalíková
- Laboratory of Reproductive Physiology, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, v.v.i., Dúbravská cesta 9, 840 05 Bratislava, Slovak Republic
| | - Petra Sečová
- Laboratory of Reproductive Physiology, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, v.v.i., Dúbravská cesta 9, 840 05 Bratislava, Slovak Republic
| | - Katarína Michalková
- Laboratory of Reproductive Physiology, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, v.v.i., Dúbravská cesta 9, 840 05 Bratislava, Slovak Republic
| | - Ľubica Horovská
- Laboratory of Reproductive Physiology, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, v.v.i., Dúbravská cesta 9, 840 05 Bratislava, Slovak Republic
| | - Veronika Páleníková
- Group of Reproductive Biology, Institute of Biotechnology, Czech Academy of Sciences, v.v.i., BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic; Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, 128 40 Prague 2, Czech Republic
| | - Jana Jankovičová
- Laboratory of Reproductive Physiology, Institute of Animal Biochemistry and Genetics, Centre of Biosciences, Slovak Academy of Sciences, v.v.i., Dúbravská cesta 9, 840 05 Bratislava, Slovak Republic.
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10
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Rossi A, Kontarakis Z. Beyond Mendelian Inheritance: Genetic Buffering and Phenotype Variability. PHENOMICS (CHAM, SWITZERLAND) 2022; 2:79-87. [PMID: 36939776 PMCID: PMC9590499 DOI: 10.1007/s43657-021-00030-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 09/29/2021] [Accepted: 10/08/2021] [Indexed: 06/18/2023]
Abstract
Understanding the way genes work amongst individuals and across generations to shape form and function is a common theme for many genetic studies. The recent advances in genetics, genome engineering and DNA sequencing reinforced the notion that genes are not the only players that determine a phenotype. Due to physiological or pathological fluctuations in gene expression, even genetically identical cells can behave and manifest different phenotypes under the same conditions. Here, we discuss mechanisms that can influence or even disrupt the axis between genotype and phenotype; the role of modifier genes, the general concept of genetic redundancy, genetic compensation, the recently described transcriptional adaptation, environmental stressors, and phenotypic plasticity. We furthermore highlight the usage of induced pluripotent stem cells (iPSCs), the generation of isogenic lines through genome engineering, and sequencing technologies can help extract new genetic and epigenetic mechanisms from what is hitherto considered 'noise'.
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Affiliation(s)
- Andrea Rossi
- Genome Engineering and Model Development Lab (GEMD), IUF-Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Zacharias Kontarakis
- Genome Engineering and Measurement Laboratory (GEML), Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
- Functional Genomics Center Zurich of ETH Zurich, University of Zurich, 8093 Zurich, Switzerland
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11
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The Molecular Interaction of Collagen with Cell Receptors for Biological Function. Polymers (Basel) 2022; 14:polym14050876. [PMID: 35267698 PMCID: PMC8912536 DOI: 10.3390/polym14050876] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 01/25/2023] Open
Abstract
Collagen, an extracellular protein, covers the entire human body and has several important biological functions in normal physiology. Recently, collagen from non-human sources has attracted attention for therapeutic management and biomedical applications. In this regard, both land-based animals such as cow, pig, chicken, camel, and sheep, and marine-based resources such as fish, octopus, starfish, sea-cucumber, and jellyfish are widely used for collagen extraction. The extracted collagen is transformed into collagen peptides, hydrolysates, films, hydrogels, scaffolds, sponges and 3D matrix for food and biomedical applications. In addition, many strategic ideas are continuously emerging to develop innovative advanced collagen biomaterials. For this purpose, it is important to understand the fundamental perception of how collagen communicates with receptors of biological cells to trigger cell signaling pathways. Therefore, this review discloses the molecular interaction of collagen with cell receptor molecules to carry out cellular signaling in biological pathways. By understanding the actual mechanism, this review opens up several new concepts to carry out next level research in collagen biomaterials.
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12
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Liu Z, Zhang K, Zhao Z, Qin Z, Tang H. Prognosis-related autophagy genes in female lung adenocarcinoma. Medicine (Baltimore) 2022; 101:e28500. [PMID: 35029906 PMCID: PMC8735786 DOI: 10.1097/md.0000000000028500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 12/16/2021] [Indexed: 12/14/2022] Open
Abstract
To screen the prognosis-related autophagy genes of female lung adenocarcinoma by the transcriptome data and clinical data from The Cancer Genome Atlas (TCGA) database.In this study, screen meaningful female lung adenocarcinoma differential genes in TCGA, use univariate Cox proportional regression model to select genes related to prognosis, and establish the best risk model. In this study, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes were applied for carrying out bioinformatics analysis of gene function.The gene expression and clinical data of 264 female lung adenocarcinoma patient samples were downloaded from TCGA. Twelve down-regulated genes: NRG3, DLC1, NLRC4, DAPK2, HSPB8, PPP1R15A, FOS, NRG1, PRKCQ, GRID1, MAP1LC3C, GABARAPL1. Up-regulated 15 genes: PARP1, BNIP3, P4HB, ATIC, IKBKE, ITGB4, VMP1, PTK6, EIF4EBP1, GAPDH, ATG9B, ERO1A, TMEM74, CDKN2A, BIRC5. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis showed that these genes were significantly associated with autophagy and mitochondria (animals). Multifactor Cox analysis of autophagy-related genes showed that ITGA6, ERO1A, FKBP1A, BAK1, CCR2, FADD, EDEM1, ATG10, ATG4A, DLC1, VAMP7, ST13 were identified as independent prognostic indicators. According to the multivariate Cox proportional hazard regression model, there was a significant difference in the survival rate observed between the high-risk group (n = 124) and the low-risk group (n = 126) during the 10-year follow-up (P < .05). Univariate Cox analysis showed that tumor stage, T, M, and N stages, and risk score were all related to the survival rate of female lung adenocarcinoma patients. Multivariate Cox analysis found that autophagy-related risk scores were independent predictors, with an area under curve (AUC) value of 0.842. At last, there is autophagy genes differentially expressed among various clinicopathological parameters: ATG4A, BAK1, CCR2, DLC1, ERO1A, FKBP1A, ITGA6.The risk score can be used as an independent prognostic indicator for female patients with lung adenocarcinoma. The autophagy genes ITGA6, ERO1A, FKBP1A, BAK1, CCR2, FADD, EDEM1, ATG10, ATG4A, DLC1, VAMP7, ST13 were identified as prognostic genes in female lung adenocarcinoma, which may be the targets of treatment in the future.
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Affiliation(s)
- Zhongxiang Liu
- Department of Pulmonary and Critical Care Medicine, Yancheng First People's Hospital, Yancheng, China
| | - Koudong Zhang
- Department of Pulmonary and Critical Care Medicine, Yancheng First People's Hospital, Yancheng, China
| | - Zhangyan Zhao
- Department of Pulmonary and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Zhu Qin
- Department of Pulmonary and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Haicheng Tang
- Department of Pulmonary and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
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13
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Taylor L, Wankell M, Saxena P, McFarlane C, Hebbard L. Cell adhesion an important determinant of myogenesis and satellite cell activity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1869:119170. [PMID: 34763027 DOI: 10.1016/j.bbamcr.2021.119170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/18/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
Skeletal muscles represent a complex and highly organised tissue responsible for all voluntary body movements. Developed through an intricate and tightly controlled process known as myogenesis, muscles form early in development and are maintained throughout life. Due to the constant stresses that muscles are subjected to, skeletal muscles maintain a complex course of regeneration to both replace and repair damaged myofibers and to form new functional myofibers. This process, made possible by a pool of resident muscle stem cells, termed satellite cells, and controlled by an array of transcription factors, is additionally reliant on a diverse range of cell adhesion molecules and the numerous signaling cascades that they initiate. This article will review the literature surrounding adhesion molecules and their roles in skeletal muscle myogenesis and repair.
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Affiliation(s)
- Lauren Taylor
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia
| | - Miriam Wankell
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia
| | - Pankaj Saxena
- Department of Cardiothoracic Surgery, The Townsville University Hospital, Townsville, Queensland, Australia; College of Medicine, Dentistry, James Cook University, Townsville, Queensland, Australia
| | - Craig McFarlane
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia.
| | - Lionel Hebbard
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia; Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, New South Wales, Australia.
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14
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Deng S, Zhu Y, Zhao X, Chen J, Tuan RS, Chan HF. Efficient fabrication of monodisperse hepatocyte spheroids and encapsulation in hybrid hydrogel with controllable extracellular matrix effect. Biofabrication 2021; 14. [PMID: 34587587 DOI: 10.1088/1758-5090/ac2b89] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 09/29/2021] [Indexed: 11/12/2022]
Abstract
Three-dimensional (3D) culture techniques, such as spheroid and organoid cultures, have gained increasing interest in biomedical research. However, the understanding and control of extracellular matrix (ECM) effect in spheroid and organoid culture has been limited. Here, we report a biofabrication approach to efficiently form uniform-sized 3D hepatocyte spheroids and encapsulate them in a hybrid hydrogel composed of alginate and various ECM molecules. Cells were seeded in a microwell platform to form spheroid before being encapsulated directly in a hybrid hydrogel containing various ECM molecules, including collagen type I (COL1), collagen type IV (COL4), fibronectin (FN), and laminin (LM). A systematic analysis of the effect of ECM molecules on the primary mouse hepatocyte phenotype was then performed. Our results showed that hydrogel encapsulation of hepatocyte spheroid promoted hepatic marker expression and secretory functions. In addition, different ECM molecules elicited distinct effects on hepatic functions in 3D encapsulated hepatocyte spheroids, but not in 2D hepatocyte and 3D non-encapsulated spheroids. When encapsulated in hybrid hydrogel containing LM alone or COL1 alone, hepatocyte spheroids exhibited improved hepatic functions overall. Analysis of gene and protein expression showed an upregulation of integrinα1 and integrinα6 when LM was introduced in the hybrid hydrogel, suggesting a possible role of integrin signaling involved in the ECM effect. Finally, a combinatorial screening was performed to demonstrate the potential to screen a multitude of 3D microenvironments of varying ECM combinations that exhibited synergistic influence, indicating a strong positive effect of COL1 and a negative interaction effect of COL1·LM on both albumin and urea secretion. These findings illustrate the broad application potential of this biofabrication approach in identifying optimal ECM composition(s) for engineering 3D tissue, and elucidating defined ECM cues for tissue engineering and regenerative medicine.
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Affiliation(s)
- Shuai Deng
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
| | - Yanlun Zhu
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
| | - Xiaoyu Zhao
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
| | - Jiansu Chen
- Key Laboratory for Regenerative Medicine, Ministry of Education of China, Jinan University, Guangzhou, People's Republic of China.,Aier Eye Institute, Changsha, People's Republic of China.,Aier School of Ophthalmology, Central South University, Changsha, People's Republic of China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, People's Republic of China.,Department of Ophthalmology, First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Rocky S Tuan
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
| | - Hon Fai Chan
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China.,Hong Kong Branch of CAS Center for Excellence in Animal Evolution and Genetics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, People's Republic of China
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15
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Van Eyssen SR, Kavaz D. An evaluative in vitro investigation of the delivery of cytarabine with RGD decorated solid lipid nanoparticles. J Microencapsul 2021; 38:546-558. [PMID: 34632926 DOI: 10.1080/02652048.2021.1992028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AIM To synthesise cytarabine-loaded SLNs modified with the RGD peptide as a ligand, suitable for effective cancer therapy. METHODS SLNs were synthesised by the high shear, hot homogenisation technique. A 2 level 3 factor analysis was used in optimisation. Particle size, zeta potential, poly-dispersion index and surface morphology were measured. Drug encapsulation, drug release, release kinetics, nanoparticle stability and chemical structure were determined. LIVE/DEAD® Fluorescence Assay was used to qualify cytotoxicity and Tryphan Blue assay to quantify. RESULTS Cyt-SLNs exhibited a size of 161 ± 2.25 nm, a PDI of 0.49 ± 0.15 and a zeta potential of -19.8 mV. Entrapment fell at 88.87 ± 0.02% and release at 83.5 ± 0.95%. The in vitro release kinetics pointed towards a diffusion-based drug release mechanism. SLNs remained stable for 60 d. Cytotoxicity studies revealed that conjugation of the ligand with the RDG peptide resulted in a significant decrease in cell viability in both cell lines. CONCLUSION Overall, the study suggests that RGD-SLN-cyt can be used for effective cancer therapy.
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Affiliation(s)
| | - Doga Kavaz
- Bioengineering Department, Faculty of Engineering, Cyprus International University, Cyprus, Turkey
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16
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Picoli CC, Gonçalves BÔP, Santos GSP, Rocha BGS, Costa AC, Resende RR, Birbrair A. Pericytes cross-talks within the tumor microenvironment. Biochim Biophys Acta Rev Cancer 2021; 1876:188608. [PMID: 34384850 DOI: 10.1016/j.bbcan.2021.188608] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 07/14/2021] [Accepted: 08/05/2021] [Indexed: 02/07/2023]
Abstract
Cancer cells are embedded within the tumor microenvironment and interact dynamically with its components during tumor progression. Understanding the molecular mechanisms by which the tumor microenvironment components communicate is crucial for the success of therapeutic applications. Recent studies show, by using state-of-the-art technologies, including sophisticated in vivo inducible Cre/loxP mediated systems and CRISPR-Cas9 gene editing, that pericytes communicate with cancer cells. The arising knowledge on cross-talks within the tumor microenvironment will be essential for the development of new therapies against cancer. Here, we review recent progress in our understanding of pericytes roles within tumors.
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Affiliation(s)
- Caroline C Picoli
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Bryan Ô P Gonçalves
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Gabryella S P Santos
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Beatriz G S Rocha
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Alinne C Costa
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rodrigo R Resende
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Radiology, Columbia University Medical Center, New York, NY, USA.
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17
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Bugatti K. α V β 6 Integrin: An Intriguing Target for COVID-19 and Related Diseases. Chembiochem 2021; 22:2516-2520. [PMID: 34132013 PMCID: PMC8426704 DOI: 10.1002/cbic.202100209] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/31/2021] [Indexed: 01/03/2023]
Abstract
The outbreak of SARS-CoV-2 has been an extraordinary event that constituted a global health emergency. As the novel coronavirus is continuing to spread over the world, the need for therapeutic agents to control this pandemic is increasing. αV β6 Integrin may be an intriguing target not only for the inhibition of SARS-CoV-2 entry, but also for the diagnosis/treatment of COVID-19 related fibrosis, an emerging type of fibrotic disease which will probably affect a significant part of the recovered patients. In this short article, the possible role of this integrin for fighting COVID-19 is discussed on the basis of recently published evidence, showing how its underestimated involvement may be interesting for the development of novel pharmacological tools.
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Affiliation(s)
- Kelly Bugatti
- Dipartimento di Scienze degli Alimenti e del FarmacoUniversità di ParmaParco Area delle Scienze 27A43124ParmaItaly
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18
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Bazhenov DO, Khokhlova EV, Viazmina LP, Furaeva KN, Mikhailova VA, Kostin NA, Selkov SA, Sokolov DI. Characteristics of Natural Killer Cell Interaction with Trophoblast Cells During Pregnancy. Curr Mol Med 2021; 20:202-219. [PMID: 31393246 DOI: 10.2174/1566524019666190808103227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 07/19/2019] [Accepted: 07/30/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Maternal natural killer cells (NK cells) are a prevailing leukocyte population in the uteroplacental bed. Current descriptions of the effect of cytokines from the placental microenvironment on the expression of receptors by trophoblast and NK cells are inadequate and contradictory. There is insufficient information about the ability of NK cells to migrate through trophoblast cells. OBJECTIVE To assess the impact of conditioned media obtained during culturing of placentas from the first and the third trimesters of healthy pregnancies on the phenotype of trophoblast and NK cells and impact on adhesion and transmigration of NK cells through trophoblast cell layer. RESULTS We established that conditioned media obtained from both first and third trimester placentas increased the intensity of CD106, CD49e, CD49a, CD31, CD51/61, and integrin β6 expression by trophoblast cells. Conditioned media obtained from first trimester placentas increased the intensity of CD11a, CD29, CD49d, CD58, CD29 expression by NK cells. The presence of conditioned media from third trimester placentas resulted in more intense CD29, CD49d, CD11a, CD29, CD49d, and CD58 expression by NK cells. Migration of NK cells through trophoblast cells in the presence of conditioned media from first trimester placentas was increased compared with the migration level in the presence of conditioned media from third trimester placentas. This may be associated with increased expression of CD18 by NK cells. CONCLUSION First trimester placental secretory products increase adhesion receptor expression by both trophoblast and NK cells. Under these conditions, trophoblast is capable of ensuring NK cell adhesion and transmigration.
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Affiliation(s)
- Dmitry Olegovich Bazhenov
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation.,Federal State Budgetary Scientific Institution Research Institute of Experimental Medicine, Russian Federation
| | - Evgeniya Valerevna Khokhlova
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation
| | - Larisa Pavlovna Viazmina
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation
| | - Kseniya Nikolaevna Furaeva
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation
| | - Valentina Anatolievna Mikhailova
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation
| | - Nikolay Anatolievich Kostin
- Resource Centre for the Molecular and Cell Technologies Development, Saint Petersburg State University, Saint- Petersburg, Russian Federation
| | - Sergey Alekseevich Selkov
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation
| | - Dmitry Igorevich Sokolov
- Federal State Budgetary Scientific Institution Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott, Mendeleevskya line, 199034, Saint-Petersburg, Russian Federation.,Federal State Budgetary Scientific Institution Research Institute of Experimental Medicine, Russian Federation
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19
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Hameed P, Manivasagam G. An overview of bio-actuation in collagen hydrogels: a mechanobiological phenomenon. Biophys Rev 2021; 13:387-403. [PMID: 34178172 PMCID: PMC8214648 DOI: 10.1007/s12551-021-00804-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 05/04/2021] [Indexed: 12/26/2022] Open
Abstract
Due to their congruity with the native extracellular matrix and their ability to assist in soft tissue repair, hydrogels have been touted as a matrix mimicking biomaterial. Hydrogels are one of the prevalent scaffolds used for 3D cell culture. They can exhibit actuation in response to various stimuli like a magnetic field, electric field, mechanical force, temperature, or pH. In 3D cell culture, the traction exerted by cells on hydrogel can induce non-periodic mechanobiological movements (shrinking or folding) called 'bio-actuation'. Interestingly, this hydrogel 'tropism' phenomenon in 3D cell cultures can be exploited to devise hydrogel-cell-based actuators for tissue engineering. This review briefs about the discrepancies in 2D vs. 3D cell culturing on hydrogels and discusses on different types of cell migration occurring inside the hydrogel matrix. It substantiates the role of mechanical stimuli (such as stiffness) exhibited by the collagen-based hydrogel used for 3D cell culture and its influence in governing the lineage commitment of stem cells. Lastly, the review also audits the cytoskeleton proteins present in cells responsible for influencing the actuation of collagen hydrogel and also elaborates on the cellular signaling pathways responsible for actuation of collagen hydrogels.
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Affiliation(s)
- Pearlin Hameed
- Centre for Biomaterials Cellular and Molecular Theranostics, Vellore Institute of Technology, Vellore, 632014 India
| | - Geetha Manivasagam
- Centre for Biomaterials Cellular and Molecular Theranostics, Vellore Institute of Technology, Vellore, 632014 India
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20
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Abaricia JO, Shah AH, Olivares-Navarrete R. Substrate stiffness induces neutrophil extracellular trap (NET) formation through focal adhesion kinase activation. Biomaterials 2021; 271:120715. [PMID: 33677375 DOI: 10.1016/j.biomaterials.2021.120715] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 01/07/2021] [Accepted: 02/08/2021] [Indexed: 02/07/2023]
Abstract
Neutrophils predominate the early inflammatory response to tissue injury and implantation of biomaterials. Recent studies have shown that neutrophil activation can be regulated by mechanical cues such as stiffness or surface wettability; however, it is not known how neutrophils sense and respond to physical cues, particularly how they form neutrophil extracellular traps (NET formation). To examine this, we used polydimethylsiloxane (PDMS) substrates of varying physiologically relevant stiffness (0.2-32 kPa) and examined the response of murine neutrophils to untreated surfaces or to surfaces coated with various extracellular matrix proteins recognized by integrin heterodimers (collagen, fibronectin, laminin, vitronectin, synthetic RGD). Neutrophils on higher stiffness PDMS substrates had increased NET formation and higher secretion of pro-inflammatory cytokines and chemokines. Extracellular matrix protein coatings showed that fibronectin induced the most NET formation and this effect was stiffness dependent. Synthetic RGD peptides induced similar levels of NET formation and pro-inflammatory cytokine release than the full-length fibronectin protein. To determine if the observed NET formation in response to substrate stiffness required focal adhesion kinase (FAK) activity, which is down stream of integrin activation, FAK inhibitor PF-573228 was used. Inhibition of FAK using PF-573228 ablated the stiffness-dependent increase in NET formation and pro-inflammatory molecule secretion. These findings demonstrate that neutrophils regulate NET formation in response to physical and mechanical biomaterial cues and this process is regulated through integrin/FAK signaling.
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Affiliation(s)
- Jefferson O Abaricia
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, United States
| | - Arth H Shah
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, United States
| | - Rene Olivares-Navarrete
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, United States.
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21
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Torikai M, Higuchi H, Yamamoto N, Ishikawa D, Fujita H, Taguchi K, Sakai F, Soejima K, Nakashima T. A novel monoclonal antibody cross-reactive with both human and mouse α9 integrin useful for therapy against rheumatoid arthritis. J Biochem 2021; 168:231-241. [PMID: 32271918 DOI: 10.1093/jb/mvaa040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/28/2020] [Indexed: 11/14/2022] Open
Abstract
This study introduces a novel monoclonal anti-α9 integrin antibody (MA9-413) with human variable regions, isolated by phage display technology. MA9-413 specifically binds to both human and mouse α9 integrin by recognizing a conserved loop region designated as L1 (amino acids 104-122 of human α9 integrin). MA9-413 inhibits human and mouse α9 integrin-dependent cell adhesion to ligands and suppresses synovial inflammation and osteoclast activation in a mouse model of arthritis. This is the first monoclonal anti-α9 integrin antibody that can react with and functionally inhibit both human and mouse α9 integrin. MA9-413 allows data acquisition both in animal and human pharmacological studies without resorting to surrogate antibodies. Since MA9-413 showed certain therapeutic effects in the mouse arthritis model, it can be considered as a useful therapy against rheumatoid arthritis and other α9 integrin-associated diseases.
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Affiliation(s)
- Masaharu Torikai
- Research & Development Division, KM Biologics Co., Ltd, 1314-1 Kyokushi-Kawabe, Kikuchi, Kumamoto 869-1298, Japan
| | - Hirofumi Higuchi
- Research & Development Division, KM Biologics Co., Ltd, 1314-1 Kyokushi-Kawabe, Kikuchi, Kumamoto 869-1298, Japan
| | | | - Daisuke Ishikawa
- Research & Development Division, KM Biologics Co., Ltd, 1314-1 Kyokushi-Kawabe, Kikuchi, Kumamoto 869-1298, Japan
| | - Hirotada Fujita
- Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Katsunari Taguchi
- Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Fumihiko Sakai
- EVEC Inc., 6 Odori Nishi, Chuo-ku, Sapporo 060-0042, Japan
| | - Kenji Soejima
- Research & Development Division, KM Biologics Co., Ltd, 1314-1 Kyokushi-Kawabe, Kikuchi, Kumamoto 869-1298, Japan
| | - Toshihiro Nakashima
- The Chemo-Sero-Therapeutic Research Institute (Kaketsuken), 4-7 Hanabatacho, Chuo-ku, Kumamoto 860-0806, Japan
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Narh CA. Genomic Cues From Beta-Coronaviruses and Mammalian Hosts Sheds Light on Probable Origins and Infectivity of SARS-CoV-2 Causing COVID-19. Front Genet 2020; 11:902. [PMID: 33110415 PMCID: PMC7489052 DOI: 10.3389/fgene.2020.00902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/21/2020] [Indexed: 12/29/2022] Open
Affiliation(s)
- Charles A Narh
- Life Sciences, Burnet Institute for Medical Research, Melbourne, VIC, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, Australia.,Department of Infectious Diseases, Monash University, Melbourne, VIC, Australia
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Kadry YA, Calderwood DA. Chapter 22: Structural and signaling functions of integrins. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2020; 1862:183206. [PMID: 31991120 PMCID: PMC7063833 DOI: 10.1016/j.bbamem.2020.183206] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 02/06/2023]
Abstract
The integrin family of transmembrane adhesion receptors is essential for sensing and adhering to the extracellular environment. Integrins are heterodimers composed of non-covalently associated α and β subunits that engage extracellular matrix proteins and couple to intracellular signaling and cytoskeletal complexes. Humans have 24 different integrin heterodimers with differing ligand binding specificities and non-redundant functions. Complex structural rearrangements control the ability of integrins to engage ligands and to activate diverse downstream signaling networks, modulating cell adhesion and dynamics, processes which are crucial for metazoan life and development. Here we review the structural and signaling functions of integrins focusing on recent advances which have enhanced our understanding of how integrins are activated and regulated, and the cytoplasmic signaling networks downstream of integrins.
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Affiliation(s)
- Yasmin A Kadry
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, United States of America
| | - David A Calderwood
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, United States of America; Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06520, United States of America..
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24
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Myofibroblast induces hepatocyte-to-ductal metaplasia via laminin-ɑvβ6 integrin in liver fibrosis. Cell Death Dis 2020; 11:199. [PMID: 32251270 PMCID: PMC7090046 DOI: 10.1038/s41419-020-2372-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/19/2020] [Accepted: 02/19/2020] [Indexed: 12/20/2022]
Abstract
Hepatocytes undergo the metaplasia into ductal biliary epithelial cells (BECs) in response to chronic injury, and subsequently contribute to liver regeneration. The mechanism underlying hepatocyte-to-ductal metaplasia has not been explored until now. In mouse models of liver fibrosis, a florid BEC response was observed in fibrotic liver, and the depletion of myofibroblasts attenuated BEC expansion remarkably. Then, in hepatocyte fate-tracing mouse model, we demonstrated the conversion of mature hepatocytes into ductal BECs in fibrotic liver, and the depletion of myofibroblasts diminished the hepatocyte-to-ductal metaplasia. Finally, the mechanism underlying the metaplasia was investigated. Myofibroblasts secreted laminin-rich extracellular matrix, and then laminin induced hepatocyte-to-ductal metaplasia through ɑvβ6 integrin. Therefore, our results demonstrated myofibroblasts induce the conversion of mature hepatocytes into ductal BECs through laminin-ɑvβ6 integrin, which reveals that the strategy improve regeneration in fibrotic liver through the modification of specific microenvironment.
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Molè MA, Galea GL, Rolo A, Weberling A, Nychyk O, De Castro SC, Savery D, Fässler R, Ybot-González P, Greene NDE, Copp AJ. Integrin-Mediated Focal Anchorage Drives Epithelial Zippering during Mouse Neural Tube Closure. Dev Cell 2020; 52:321-334.e6. [PMID: 32049039 PMCID: PMC7008250 DOI: 10.1016/j.devcel.2020.01.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 10/24/2019] [Accepted: 01/07/2020] [Indexed: 12/17/2022]
Abstract
Epithelial fusion is a key process of morphogenesis by which tissue connectivity is established between adjacent epithelial sheets. A striking and poorly understood feature of this process is "zippering," whereby a fusion point moves directionally along an organ rudiment. Here, we uncover the molecular mechanism underlying zippering during mouse spinal neural tube closure. Fusion is initiated via local activation of integrin β1 and focal anchorage of surface ectoderm cells to a shared point of fibronectin-rich basement membrane, where the neural folds first contact each other. Surface ectoderm cells undergo proximal junction shortening, establishing a transitory semi-rosette-like structure at the zippering point that promotes juxtaposition of cells across the midline enabling fusion propagation. Tissue-specific ablation of integrin β1 abolishes the semi-rosette formation, preventing zippering and causing spina bifida. We propose integrin-mediated anchorage as an evolutionarily conserved mechanism of general relevance for zippering closure of epithelial gaps whose disturbance can produce clinically important birth defects.
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Affiliation(s)
- Matteo A Molè
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK; Department of Physiology, Development & Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK.
| | - Gabriel L Galea
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Ana Rolo
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Antonia Weberling
- Department of Physiology, Development & Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
| | - Oleksandr Nychyk
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK; Neuro-endocrinology/Nutrition, Food Bioscience Department, Teagasc Moorepark, Fermoy, Co. Cork, Ireland
| | - Sandra C De Castro
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Dawn Savery
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Reinhard Fässler
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Patricia Ybot-González
- Department of Neurology and Neurophysiology, Hospital Virgen de Macarena, Sevilla, Spain
| | - Nicholas D E Greene
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Andrew J Copp
- Newlife Birth Defects Research Centre, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK.
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de Azevedo-Quintanilha IG, Vieira-de-Abreu A, Ferreira AC, Reis PA, Silva TI, Nascimento DDO, Campbell RA, Estato V, Weyrich AS, Bozza PT, Zimmerman GA, Castro-Faria-Neto HC. Integrin αDβ2 influences cerebral edema, leukocyte accumulation and neurologic outcomes in experimental severe malaria. PLoS One 2019; 14:e0224610. [PMID: 31869339 PMCID: PMC6927624 DOI: 10.1371/journal.pone.0224610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 10/17/2019] [Indexed: 12/30/2022] Open
Abstract
Malaria is an infectious disease of major worldwide clinical importance that causes a variety of severe, or complicated, syndromes including cerebral malaria, which is often fatal. Leukocyte integrins are essential for host defense but also mediate physiologic responses of the innate and adaptive immune systems. We previously showed that targeted deletion of the αD subunit (αD-/-) of the αDβ2 integrin, which is expressed on key leukocyte subsets in mice and humans, leads to absent expression of the integrin heterodimer on murine macrophages and reduces mortality in mice infected with Plasmodium berghei ANKA (P. berghei ANKA). To further identify mechanisms involved in the protective effect of αD deletion in this model of severe malaria we examined wild type C57BL/6 (WT) and αD-/- mice after P. berghei ANKA infection and found that vessel plugging and leukocyte infiltration were significantly decreased in the brains of αD-/- animals. Intravital microscopy demonstrated decreased rolling and adhesion of leukocytes in cerebral vessels of αD-/- mice. Flow cytometry analysis showed decreased T-lymphocyte accumulation in the brains of infected αD-/- animals. Evans blue dye exclusion assays demonstrated significantly less dye extravasation in the brains of αD-/- mice, indicating preserved blood-brain barrier integrity. WT mice that were salvaged from P. berghei ANKA infection by treatment with chloroquine had impaired aversive memory, which was not observed in αD-/- mice. We conclude that deletion of integrin αDβ2 alters the natural course of experimental severe malaria, demonstrating previously unrecognized activities of a key leukocyte integrin in immune-inflammatory responses that mediate cerebral involvement.
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Affiliation(s)
| | - Adriana Vieira-de-Abreu
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - André C. Ferreira
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patricia A. Reis
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tathiany I. Silva
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Danielle de O. Nascimento
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Robert A. Campbell
- Department of Internal Medicine and Program in Molecular Medicine, University of Utah, Salt Lake City, Utah, United States of America
| | - Vanessa Estato
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andrew S. Weyrich
- Department of Internal Medicine and Program in Molecular Medicine, University of Utah, Salt Lake City, Utah, United States of America
| | - Patrícia T. Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Guy A. Zimmerman
- Department of Internal Medicine and Program in Molecular Medicine, University of Utah, Salt Lake City, Utah, United States of America
| | - Hugo C. Castro-Faria-Neto
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
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Han P, Frith JE, Gomez GA, Yap AS, O'Neill GM, Cooper-White JJ. Five Piconewtons: The Difference between Osteogenic and Adipogenic Fate Choice in Human Mesenchymal Stem Cells. ACS NANO 2019; 13:11129-11143. [PMID: 31580055 DOI: 10.1021/acsnano.9b03914] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The ability of mesenchymal stem cells to sense nanoscale variations in extracellular matrix (ECM) compositions in their local microenvironment is crucial to their survival and their fate; however, the underlying molecular mechanisms defining how such fates are temporally modulated remain poorly understood. In this work, we have utilized self-assembled block copolymer surfaces to present nanodomains of an adhesive peptide found in many ECM proteins at different lateral spacings (from 30 to 60 nm) and studied the temporal response (2 h to 14 days) of human mesenchymal stem cells (hMSCs) using a panel of real-time localization and activity biosensors. Our findings revealed that within the first 4 to 24 h postadhesion and spreading, hMSCs on smaller nanodomain spacings recruit more activated FAK and Src proteins to produce larger, longer-lived, and increased numbers of focal adhesions (FAs). The adhesions formed on smaller nanospacings rapidly recruit higher amounts of nonmuscle myosin IIA and vinculin and experience tension forces (by >5 pN/FA) significantly higher than those observed on larger nanodomain spacings. The transmission of higher levels of tension into the cytoskeleton at short times was accompanied by higher Rac1, cytosolic β-catenin, and nuclear localization of YAP/TAZ and RUNX2, which together biased the commitment of hMSCs to an osteogenic fate. This investigation provides mechanistic insights to confirm that smaller lateral spacings of adhesive nanodomains alter hMSC mechanosensing and biases mechanotransduction at short times via differential coupling of FAK/Src/Rac1/myosin IIA/YAP/TAZ signaling pathways to support longer-term changes in stem cell differentiation and state.
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Affiliation(s)
- Pingping Han
- Tissue Engineering and Microfluidics Laboratory (TE&M), Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
- The UQ Centre in Stem Cell Ageing and Regenerative Engineering (StemCARE), Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
| | - Jessica E Frith
- Tissue Engineering and Microfluidics Laboratory (TE&M), Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
- Materials Science and Engineering , Monash University , Melbourne , VIC 3168 , Australia
| | - Guillermo A Gomez
- Institute of Molecular Biosciences , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
- Centre for Cancer Biology , South Australia Pathology and The University of South Australia , Adelaide , SA 5001 , Australia
| | - Alpha S Yap
- Institute of Molecular Biosciences , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
| | - Geraldine M O'Neill
- Kids Research Institute , Children's Hospital at Westmead , Sydney , NSW 2006 , Australia
- Discipline of Child and Adolescent Health , University of Sydney , Sydney , NSW 2006 , Australia
| | - Justin J Cooper-White
- Tissue Engineering and Microfluidics Laboratory (TE&M), Australian Institute for Bioengineering and Nanotechnology (AIBN) , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
- The UQ Centre in Stem Cell Ageing and Regenerative Engineering (StemCARE), Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
- Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing , Melbourne , Clayton, VIC 3168 , Australia
- School of Chemical Engineering , The University of Queensland , Brisbane , St. Lucia, QLD 4067 , Australia
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Integrin ß1 polymorphisms and bleeding risk after coronary artery stenting. Mol Biol Rep 2019; 46:5695-5702. [PMID: 31359383 DOI: 10.1007/s11033-019-05003-2] [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: 05/12/2019] [Accepted: 07/24/2019] [Indexed: 10/26/2022]
Abstract
Bleeding complications following percutaneous coronary intervention associate with increased mortality. However, the underlying molecular mechanisms are insufficiently understood. Platelet recruitment and activation at sites of vascular injury depends on the function of integrin adhesion receptors. Besides GPIIbIIIa as the most abundant integrin receptor, platelets relevantly express ß1 integrins. Experimental evidence from in vivo studies suggests a significant role of ß1 integrins in primary haemostasis. However, little is known about the clinical impact of genetic alterations of the β1 subunit, which might contribute to bleeding complications in patients. In this study, we performed DNA sequencing of patients suffering from bleeding complications after coronary artery stenting according to TIMI or BARC classification. We isolated DNA samples from 741 patients out of a cohort from 14,160 patients recruited in seven randomized clinical trials between June 2000 and May 2011. Subsequently, Sanger sequencing was performed covering the β1 integrin cytoplasmic activation domain (exon16) and its non-coding upstream region. Out of 764 patients suffering from bleeding complications, 741 DNA samples were successfully sequenced. Genotype variation was detected for SNP rs2153875 located within the non-coding upstream region with following allele frequency in study population: CC (7.3%), CA (35%) and AA (57.8%), which is similar to a general population cohort. Further, genotype variation in SNP rs2153875 do not associate with the frequency of TIMI or BARC classified access or non-access site bleedings. Genotype variations of the β1 integrin activation domain do not associate with bleeding risk after PCI.
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29
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Chen W, Zhuang X, Qi R, Qiao T. MiR-302a-5p suppresses cell proliferation and invasion in non-small cell lung carcinoma by targeting ITGA6. Am J Transl Res 2019; 11:4348-4357. [PMID: 31396340 PMCID: PMC6684888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/20/2019] [Indexed: 06/10/2023]
Abstract
MicroRNA-302a-5p (miR-302a-5p) has been implicated in several cancers; however, its role in human non-small cell lung carcinoma (NSCLC) remains unknown. In this study, we showed that miR-302a-5p is downregulated in NSCLC tissues and cell lines. Cell Counting Kit-8 and 5-ethynyl-2'-deoxyuridine assays showed that overexpression of a miR-302a-5p mimic suppressed NSCLC cell proliferation, which was confirmed by the results of a cell cycle assay. Overexpression of miR-302a-5p also reduced the migration and invasion of NSCLC cells. Additionally, miR-302a-5p overexpression significantly inhibited NSCLC growth and metastasis in a mouse xenograft model. With regard to the underlying mechanism, integrin α6 (ITGA6) mRNA was shown to be a novel target of miR-302a-5p, and overexpression of ITGA6 attenuated the inhibitory effects of miR-302a-5p on the proliferation and migration of NSCLC cells. In clinical NSCLC samples, miR-302a-5p expression was negatively correlated with ITGA6 expression, which was high in the samples. Collectively, these results indicate that miR-302a-5p acts as a tumor suppressor in NSCLC by directly targeting ITGA6 mRNA and may be useful as a theranostic biomarker of NSCLC.
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Affiliation(s)
- Wei Chen
- Department of Oncology, Jinshan Hospital, Fudan University Shanghai 201500, China
| | - Xibing Zhuang
- Department of Oncology, Jinshan Hospital, Fudan University Shanghai 201500, China
| | - Ruixue Qi
- Department of Oncology, Jinshan Hospital, Fudan University Shanghai 201500, China
| | - Tiankui Qiao
- Department of Oncology, Jinshan Hospital, Fudan University Shanghai 201500, China
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30
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Charlton‐Perkins M, Almeida AD, MacDonald RB, Harris WA. Genetic control of cellular morphogenesis in Müller glia. Glia 2019; 67:1401-1411. [PMID: 30924555 PMCID: PMC6563441 DOI: 10.1002/glia.23615] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/25/2019] [Accepted: 03/11/2019] [Indexed: 02/06/2023]
Abstract
Cell shape is critical for the proper function of every cell in every tissue in the body. This is especially true for the highly morphologically diverse neural and glia cells of the central nervous system. The molecular processes by which these, or indeed any, cells gain their particular cell-specific morphology remain largely unexplored. To identify the genes involved in the morphogenesis of the principal glial cell type in the vertebrate retina, the Müller glia (MG), we used genomic and CRISPR based strategies in zebrafish (Danio rerio). We identified 41 genes involved in various aspects of MG cell morphogenesis and revealed a striking concordance between the sequential steps of anatomical feature addition and the expression of cohorts of functionally related genes that regulate these steps. We noted that the many of the genes preferentially expressed in zebrafish MG showed conservation in glia across species suggesting evolutionarily conserved glial developmental pathways.
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Affiliation(s)
- Mark Charlton‐Perkins
- Department of Physiology, Development and NeuroscienceUniversity of CambridgeCambridgeUK
| | - Alexandra D. Almeida
- Department of Physiology, Development and NeuroscienceUniversity of CambridgeCambridgeUK
| | - Ryan B. MacDonald
- Department of Infection, Immunity and Cardiovascular Disease, Medical School and the Bateson CentreUniversity of SheffieldSheffieldUK
| | - William A. Harris
- Department of Physiology, Development and NeuroscienceUniversity of CambridgeCambridgeUK
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31
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Yang Y, Zenke Y, Hirai T, Kaplan DH. Keratinocyte-derived TGFβ is not required to maintain skin immune homeostasis. J Dermatol Sci 2019; 94:290-297. [PMID: 31118160 DOI: 10.1016/j.jdermsci.2019.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Transforming growth factor beta 1 (TGFβ) is known to be a regulator of autoimmunity. Loss of TGFβ leads to severe multi-organ autoimmunity in mice. In skin, role of TGFβ in suppressing autoimmunity is unclear. OBJECTIVE Determine whether Keratinocyte (KC)-derived TGFβ is required for skin immune homeostasis. METHODS We generated K14-CreERT2TGFβ1fl/fl (TGFβΔKC) mice allowing for tamoxifen-induced deletion of TGFβ1 in KC. The phenotype of skin was analyzed and compared to mice in which epidermal activation of TGFβ is impaired. RESULTS KC was the major source of TGFβ in epidermis. Topical tamoxifen application led to efficient TGFβ1 deletion. The expected acanthosis was observed but no inflammatory infiltrate or altered numbers of resident immune cells were evident. Similarly, Itgb6-/-x K14Cre Itgb8f/f (Itgb6-/-Itgb8ΔKC) mice lacking both epidermal TGFβ-activating integrins showed no evidence of cutaneous inflammation. CONCLUSIONS KC-derived TGFβ and epidermal TGFβ activation are not required to suppress skin autoimmunity in steady state.
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Affiliation(s)
- Yi Yang
- Departments of Dermatology and Immunology, University of Pittsburgh, Pittsburgh, PA, 15261, United States; Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China; The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410000, China
| | - Yukari Zenke
- Departments of Dermatology and Immunology, University of Pittsburgh, Pittsburgh, PA, 15261, United States; Department of Dermatology, St. Luke's International Hospital, Tokyo, Japan
| | - Toshiro Hirai
- Departments of Dermatology and Immunology, University of Pittsburgh, Pittsburgh, PA, 15261, United States.
| | - Daniel H Kaplan
- Departments of Dermatology and Immunology, University of Pittsburgh, Pittsburgh, PA, 15261, United States.
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Santoro R, Perrucci GL, Gowran A, Pompilio G. Unchain My Heart: Integrins at the Basis of iPSC Cardiomyocyte Differentiation. Stem Cells Int 2019; 2019:8203950. [PMID: 30906328 PMCID: PMC6393933 DOI: 10.1155/2019/8203950] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/20/2018] [Accepted: 01/10/2019] [Indexed: 02/06/2023] Open
Abstract
The cellular response to the extracellular matrix (ECM) microenvironment mediated by integrin adhesion is of fundamental importance, in both developmental and pathological processes. In particular, mechanotransduction is of growing importance in groundbreaking cellular models such as induced pluripotent stem cells (iPSC), since this process may strongly influence cell fate and, thus, augment the precision of differentiation into specific cell types, e.g., cardiomyocytes. The decryption of the cellular machinery starting from ECM sensing to iPSC differentiation calls for new in vitro methods. Conveniently, engineered biomaterials activating controlled integrin-mediated responses through chemical, physical, and geometrical designs are key to resolving this issue and could foster clinical translation of optimized iPSC-based technology. This review introduces the main integrin-dependent mechanisms and signalling pathways involved in mechanotransduction. Special consideration is given to the integrin-iPSC linkage signalling chain in the cardiovascular field, focusing on biomaterial-based in vitro models to evaluate the relevance of this process in iPSC differentiation into cardiomyocytes.
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Affiliation(s)
- Rosaria Santoro
- Unità di Biologia Vascolare e Medicina Rigenerativa, Centro Cardiologico Monzino IRCCS, via Carlo Parea 4, Milan, Italy
| | - Gianluca Lorenzo Perrucci
- Unità di Biologia Vascolare e Medicina Rigenerativa, Centro Cardiologico Monzino IRCCS, via Carlo Parea 4, Milan, Italy
| | - Aoife Gowran
- Unità di Biologia Vascolare e Medicina Rigenerativa, Centro Cardiologico Monzino IRCCS, via Carlo Parea 4, Milan, Italy
| | - Giulio Pompilio
- Unità di Biologia Vascolare e Medicina Rigenerativa, Centro Cardiologico Monzino IRCCS, via Carlo Parea 4, Milan, Italy
- Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, via Festa del Perdono 7, Milan, Italy
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Prazeres PHDM, Turquetti AOM, Azevedo PO, Barreto RSN, Miglino MA, Mintz A, Delbono O, Birbrair A. Perivascular cell αv integrins as a target to treat skeletal muscle fibrosis. Int J Biochem Cell Biol 2018; 99:109-113. [PMID: 29627438 PMCID: PMC6159891 DOI: 10.1016/j.biocel.2018.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 02/06/2023]
Abstract
Fibrosis following injury leads to aberrant regeneration and incomplete functional recovery of skeletal muscle, but the lack of detailed knowledge about the cellular and molecular mechanisms involved hampers the design of effective treatments. Using state-of-the-art technologies, Murray et al. (2017) found that perivascular PDGFRβ-expressing cells generate fibrotic cells in the skeletal muscle. Strikingly, genetic deletion of αv integrins from perivascular PDGFRβ-expressing cells significantly inhibited skeletal muscle fibrosis without affecting muscle vascularization or regeneration. In addition, the authors showed that a small molecule inhibitor of αv integrins, CWHM 12, attenuates skeletal muscle fibrosis. From a drug-development perspective, this study identifies a new cellular and molecular target to treat skeletal muscle fibrosis.
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Affiliation(s)
- Pedro H D M Prazeres
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Anaelise O M Turquetti
- Anatomy of Domestic and Wild Animals Program, Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | - Patrick O Azevedo
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rodrigo S N Barreto
- Anatomy of Domestic and Wild Animals Program, Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | - Maria A Miglino
- Anatomy of Domestic and Wild Animals Program, Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, New York, NY, USA
| | - Osvaldo Delbono
- Department of Internal Medicine-Gerontology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Anatomy of Domestic and Wild Animals Program, Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil; Department of Radiology, Columbia University Medical Center, New York, NY, USA.
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34
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Nascimento DDO, Vieira-de-Abreu A, Arcanjo AF, Bozza PT, Zimmerman GA, Castro-Faria-Neto HC. Integrin α Dβ 2 (CD11d/CD18) Modulates Leukocyte Accumulation, Pathogen Clearance, and Pyroptosis in Experimental Salmonella Typhimurium Infection. Front Immunol 2018; 9:1128. [PMID: 29881383 PMCID: PMC5977906 DOI: 10.3389/fimmu.2018.01128] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/04/2018] [Indexed: 12/14/2022] Open
Abstract
β2 integrins are critical in host defense responses to invading pathogens and inflammation. Previously, we reported that genetic deficiency of integrin αDβ2 in mice altered outcomes in experimental systemic infections including accelerated mortality in animals infected with Salmonella enterica serovar Typhimurium. Here, we show that deficiency of αDβ2 results in impaired accumulation of leukocytes in response to peritoneal infection by S. Typhimurium, impaired pathogen clearance in vivo, defective bacterial elimination by cultured peritoneal macrophages, and enhanced pyroptosis, a cell death process triggered by Salmonella. Salmonella-infected animals deficient in αDβ2 had increased levels of peritoneal cytokines in addition to other markers of pyroptosis, which may contribute to inflammatory injury and increased mortality in the context of impaired bacterial killing. These observations indicate important contributions of leukocyte integrins to the host response in experimental Salmonella infection and reveal previous activities of αDβ2 in bacterial infection.
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Affiliation(s)
| | - Adriana Vieira-de-Abreu
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.,Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Angélica F Arcanjo
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Patricia Torres Bozza
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Guy A Zimmerman
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States
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Seetharaman S, Etienne-Manneville S. Integrin diversity brings specificity in mechanotransduction. Biol Cell 2018; 110:49-64. [DOI: 10.1111/boc.201700060] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/08/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Shailaja Seetharaman
- Institut Pasteur Paris CNRS UMR3691; Cell Polarity; Migration and Cancer Unit; Equipe Labellisée Ligue Contre le Cancer; Paris Cedex 15 France
- Université Paris Descartes, Sorbonne Paris Cité; Paris 75006 France
| | - Sandrine Etienne-Manneville
- Institut Pasteur Paris CNRS UMR3691; Cell Polarity; Migration and Cancer Unit; Equipe Labellisée Ligue Contre le Cancer; Paris Cedex 15 France
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36
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Jin YP, Hu YP, Wu XS, Wu YS, Ye YY, Li HF, Liu YC, Jiang L, Liu FT, Zhang YJ, Hao YJ, Liu XY, Liu YB. miR-143-3p targeting of ITGA6 suppresses tumour growth and angiogenesis by downregulating PLGF expression via the PI3K/AKT pathway in gallbladder carcinoma. Cell Death Dis 2018; 9:182. [PMID: 29416013 PMCID: PMC5833358 DOI: 10.1038/s41419-017-0258-2] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/01/2017] [Accepted: 12/12/2017] [Indexed: 12/20/2022]
Abstract
Gallbladder cancer (GBC) is the most common malignant tumour of the biliary track system. Angiogenesis plays a pivotal role in the development and progression of malignant tumours. miR-143-3p acts as a tumour suppressor in various cancers. Their role in GBC is however less well defined. Here we show that the expression levels of miR-143-3p were decreased in human GBC tissues compared with the non-tumour adjacent tissue (NAT) counterparts and were closely associated with overall survival. We discovered that miR-143-3p was a novel inhibitor of tumour growth and angiogenesis in vivo and in vitro. Our antibody array, ELISA and PLGF rescue analyses indicated that PLGF played an essential role in the antiangiogenic effect of miR-143-3p. Furthermore, we used miRNA target-prediction software and dual-luciferase assays to confirm that integrin α6 (ITGA6) acted as a direct target of miR-143-3p. Our ELISA and western blot analyses confirmed that the expression of PLGF was decreased via the ITGA6/PI3K/AKT pathway. In conclusion, miR-143-3p suppresses tumour angiogenesis and growth of GBC through the ITGA6/PI3K/AKT/PLGF pathways and may be a novel molecular therapeutic target for GBC.
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Affiliation(s)
- Yun-Peng Jin
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Yun-Ping Hu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Xiang-Song Wu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Yao-Shi Wu
- Department of Gastroenterology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuan-Yuan Ye
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Huai-Feng Li
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Yong-Chen Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Lin Jiang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Fa-Tao Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Yi-Jian Zhang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Ya-Juan Hao
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China
| | - Xi-Yong Liu
- Department of Molecular Pharmacology, City of Hope Comprehensive Cancer Center and Beckman Research Institute, Duarte, CA, USA.
| | - Ying-Bin Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China. .,Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, 200092, Shanghai, China.
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37
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Lei C, Dong Z, Wan J, Xiao X, Lu F, Wang B. Transferring the exudate in the tissue engineering chamber as a trigger to incubate large amount adipose tissue in remote area. J Tissue Eng Regen Med 2017; 12:e1549-e1558. [DOI: 10.1002/term.2580] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 08/21/2017] [Accepted: 09/23/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Chen Lei
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
- Department of Plastic and Cosmetic SurgeryThe First Affiliated Hospital of Fujian Medical University Fuzhou Fujian P.R. China
| | - Ziqing Dong
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Jinlin Wan
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Xiaolian Xiao
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Feng Lu
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Biao Wang
- Department of Plastic and Cosmetic SurgeryThe First Affiliated Hospital of Fujian Medical University Fuzhou Fujian P.R. China
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38
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Goyer B, Thériault M, Gendron SP, Brunette I, Rochette PJ, Proulx S. Extracellular Matrix and Integrin Expression Profiles in Fuchs Endothelial Corneal Dystrophy Cells and Tissue Model. Tissue Eng Part A 2017; 24:607-615. [PMID: 28726551 PMCID: PMC5905948 DOI: 10.1089/ten.tea.2017.0128] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Primary corneal endothelial cell (CEC) cultures and 3D-engineered tissue models were used to study the aberrant deposition of extracellular matrix (ECM) in a vision impairing pathology known as Fuchs endothelial corneal dystrophy (FECD). CECs were isolated from excised Descemet membranes of patients with end-stage FECD. CECs isolated from healthy corneas served as controls. Microarray gene profiling was performed on postconfluent cultures of healthy and FECD cells. Protein expression analyses were conducted on tissue models that were engineered by seeding an endothelium on previously devitalized human stromal carriers. The engineered endothelia were kept in culture for 1-3 weeks to reform the endothelial monolayer. Protein expression of integrin subunits α4, α6, αv, and β1, as well as laminin, type IV collagen, fibronectin, clusterin, and transforming growth factor β-induced protein (TGFβIp) was then assessed by immunofluorescence. Microarray analysis showed nonstatistical twofold downregulation of collagen-coding genes (COL4A4, COL8A2, and COL21A1) and a twofold upregulation of the COL6A1, laminin α3 gene LAMA3, and integrin subunit α10 gene ITGA10 in FECD cells. Fibronectin type III domain containing 4 (FNDC4) and integrin β5 (ITGB5) genes was significantly upregulated in FECD cells. Immunostainings demonstrated that the protein expression of the integrin subunits α4, α6, αv, and β1, type IV collagen, as well as laminin remained similar between native and engineered endothelia. TGFβIp expression was found on the stromal side of both FECD and healthy Descemet's membrane, and only one out of three FECD specimens was positive for the clusterin protein. Interestingly, the ECM protein fibronectin was also found to have a stronger presence on engineered FECD tissues, a result consistent with the native FECD specimens. To conclude, this study allowed to identify fibronectin deposition as one of the first steps in the pathogenesis of FECD, as defined by our engineered tissue model. This opens the way to an entirely new perspective for in vitro pharmacological testing of new therapies for FECD, the leading indication for corneal transplantation in North America.
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Affiliation(s)
- Benjamin Goyer
- 1 Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement , Québec, Canada .,2 Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX , Québec, Canada
| | - Mathieu Thériault
- 1 Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement , Québec, Canada .,2 Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX , Québec, Canada
| | - Sébastien P Gendron
- 1 Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement , Québec, Canada .,2 Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX , Québec, Canada
| | - Isabelle Brunette
- 3 Centre Universitaire d'Ophtalmologie de l'Université de Montréal et Centre de Recherche de l'Hôpital Maisonneuve-Rosemont , CIUSSS-E, Montréal, Canada .,4 Hôpital Maisonneuve-Rosemont Research Center , CIUSSS-E, Montréal, Canada
| | - Patrick J Rochette
- 1 Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement , Québec, Canada .,2 Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX , Québec, Canada .,5 Département d'Ophtalmologie et d'Oto-Rhino-Laryngologie-Chirurgie Cervico-Faciale, Faculté de Médecine, Université Laval , Québec, Canada
| | - Stéphanie Proulx
- 1 Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement , Québec, Canada .,2 Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX , Québec, Canada .,5 Département d'Ophtalmologie et d'Oto-Rhino-Laryngologie-Chirurgie Cervico-Faciale, Faculté de Médecine, Université Laval , Québec, Canada
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39
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Leonard CA, Hayman JR. Role of host cell integrins in the microsporidium Encephalitozoon intestinalis adherence and infection in vitro. FEMS Microbiol Lett 2017; 364:4067807. [DOI: 10.1093/femsle/fnx169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 08/04/2017] [Indexed: 12/27/2022] Open
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40
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Lee P, Yeo GC, Weiss AS. A cell adhesive peptide from tropoelastin promotes sequential cell attachment and spreading via distinct receptors. FEBS J 2017; 284:2216-2230. [DOI: 10.1111/febs.14114] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/30/2017] [Accepted: 05/17/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Pearl Lee
- School of Life and Environmental Sciences University of Sydney Australia
- Bosch Institute University of Sydney Australia
- Charles Perkins Centre University of Sydney Australia
| | - Giselle C. Yeo
- School of Life and Environmental Sciences University of Sydney Australia
- Charles Perkins Centre University of Sydney Australia
- Applied and Plasma Physics School of Physics University of Sydney Australia
| | - Anthony S. Weiss
- School of Life and Environmental Sciences University of Sydney Australia
- Bosch Institute University of Sydney Australia
- Charles Perkins Centre University of Sydney Australia
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41
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Joint features and complementarities of Tspan8 and CD151 revealed in knockdown and knockout models. Biochem Soc Trans 2017; 45:437-447. [PMID: 28408484 DOI: 10.1042/bst20160298] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/04/2017] [Accepted: 02/13/2017] [Indexed: 02/06/2023]
Abstract
Tetraspanins are highly conserved 4-transmembrane proteins which form molecular clusters with a large variety of transmembrane and cytosolic proteins. By these associations tetraspanins are engaged in a multitude of biological processes. Furthermore, tetraspanin complexes are located in specialized microdomains, called tetraspanin-enriched microdomains (TEMs). TEMs provide a signaling platform and are poised for invagination and vesicle formation. These vesicles can be released as exosomes (Exo) and are important in cell contact-independent intercellular communication. Here, we summarize emphasizing knockdown and knockout models' pathophysiological joint and selective activities of CD151 and Tspan8, and discuss the TEM-related engagement of CD151 and Tspan8 in Exo activities.
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42
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Yu T, Wang C, Yang J, Guo Y, Wu Y, Li X. Metformin inhibits SUV39H1-mediated migration of prostate cancer cells. Oncogenesis 2017; 6:e324. [PMID: 28459432 PMCID: PMC5523061 DOI: 10.1038/oncsis.2017.28] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/20/2017] [Accepted: 03/20/2017] [Indexed: 12/15/2022] Open
Abstract
Prostate cancer (PCa) is a leading cause of cancer-related death among men, largely due to incurable distant metastases. Metformin, the most common used anti-type-2 diabetes medicine, has been linked to reduced cancer risk and better diagnosis. We found that metformin was able to inhibit PCa cell migration, which correlates with tumor metastatic capability. The pathogenesis and progression of tumors are closely related to dysregulated gene expression in tumor cells through epigenetic alterations such as DNA methylation and histone modifications. We found that the level of SUV39H1, a histone methyltransferase of H3 Lys9, was reduced in metformin-treated PCa cells in a time-dependent manner. SUV39H1 overexpression increased PCa migration, whereas SUV39H1 depletion suppressed PCa cell migration. There is a positive correlation between SUV39H1 expression and PCa pathological stages. We further showed that both metformin treatment and SUV39H1 knockout in PCa cells can reduce integrin αV and β1 proteins, as well as their downstream phosphorylated focal adhesion kinase (FAK) levels, which is essential for functional adhesion signaling and tumor cell migration. Taken together, metformin reduced SUV39H1 to inhibit migration of PCa cells via disturbing the integrin-FAK signaling. Our study suggests SUV39H1 as a novel target to inhibit PCa cell migration.
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Affiliation(s)
- T Yu
- Institute of Gene Engineered Animal Models for Human Diseases, Dalian Medical University, Dalian, China
- Institute of Integrative Medicine, Dalian Medical University, Dalian, China
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry (NYUCD), New York, NY, USA
| | - C Wang
- Biochemistry Section, Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - J Yang
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry (NYUCD), New York, NY, USA
| | - Y Guo
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry (NYUCD), New York, NY, USA
| | - Y Wu
- Institute of Gene Engineered Animal Models for Human Diseases, Dalian Medical University, Dalian, China
- Institute of Integrative Medicine, Dalian Medical University, Dalian, China
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry (NYUCD), New York, NY, USA
- The Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - X Li
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry (NYUCD), New York, NY, USA
- Department of Urology, New York University Langone Medical Center, New York, NY, USA
- Perlmutter Cancer Institute, New York University, Langone Medical Center, New York, NY, USA
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Reichert Faria A, Jung JE, Silva de Castro CC, de Noronha L. Reduced immunohistochemical expression of adhesion molecules in vitiligo skin biopsies. Pathol Res Pract 2016; 213:199-204. [PMID: 28214208 DOI: 10.1016/j.prp.2016.12.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/23/2016] [Accepted: 12/26/2016] [Indexed: 11/30/2022]
Abstract
Because defects in adhesion impairment seem to be involved in the etiopathogenesis of vitiligo, this study aimed to compare the immunohistochemical expression of several adhesion molecules in the epidermis of vitiligo and non lesional vitiligo skin. Sixty-six specimens of lesional and non lesional skin from 33 volunteers with vitiligo were evaluated by immunohistochemistry using anti-beta-catenin, anti-E-cadherin, anti-laminin, anti-beta1 integrin, anti-collagen IV, anti-ICAM-1 and anti-VCAM-1 antibodies. Biopsies of vitiligo skin demonstrated a significant reduction in the expression of laminin and integrin. The average value of the immunohistochemically positive reaction area of the vitiligo specimens was 3053.2μm2, compared with the observed value of 3431.8μm2 in non vitiligo skin (p=0.003) for laminin. The immuno-positive area was 7174.6μm2 (vitiligo) and 8966.7μm2 (non lesional skin) for integrin (p=0.042). A reduction in ICAM-1 and VCAM-1 expression in the basal layer of the epidermis in vitiligo samples was also observed (p=0.001 and p<0.001, respectively). However, no significant differences were observed with respect to the expression of beta-catenin, E-cadherin, and collagen IV between vitiligo and non lesional skin. Our results suggest that an impairment in adhesion exists in vitiligo skin, which is supported by the diminished immunohistochemical expression of laminin, beta1 integrin, ICAM-1 and VCAM-1.
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Affiliation(s)
- Adriane Reichert Faria
- Santa Casa de Misericórdia de Curitiba Hospital, Praça Rui Barbosa, 694-Centro, Curitiba, PR, CEP 80010-030, Brazil; Experimental Pathology Laboratory, School of Medicine, Pontifical Catholic University of Paraná, Rua Imaculada Conceição, 1155 - Prado Velho, Curitiba, PR, CEP 80215-901, Brazil.
| | | | - Caio César Silva de Castro
- Santa Casa de Misericórdia de Curitiba Hospital, Praça Rui Barbosa, 694-Centro, Curitiba, PR, CEP 80010-030, Brazil
| | - Lucia de Noronha
- Experimental Pathology Laboratory, School of Medicine, Pontifical Catholic University of Paraná, Rua Imaculada Conceição, 1155 - Prado Velho, Curitiba, PR, CEP 80215-901, Brazil
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Zhang DH, Yang ZL, Zhou EX, Miao XY, Zou Q, Li JH, Liang LF, Zeng GX, Chen SL. Overexpression of Thy1 and ITGA6 is associated with invasion, metastasis and poor prognosis in human gallbladder carcinoma. Oncol Lett 2016; 12:5136-5144. [PMID: 28105220 PMCID: PMC5228576 DOI: 10.3892/ol.2016.5341] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 10/14/2016] [Indexed: 02/07/2023] Open
Abstract
Gallbladder cancer (GBC) is a rare but highly aggressive cancer for which no well-accepted prognostic biomarkers have been identified. Thymus cell antigen 1 (Thy1), also known as cluster of differentiation (CD)90, and integrin α6 (ITGA6), also known as CD49f, are important molecules in cancer and putative markers of various stem cell types. However, their role in GBC remains to be elucidated. In the present study, Thy1 and ITGA6 expression status in clinical GBC samples, which comprised squamous cell/adenosquamous carcinoma (SC/ASC) and adenocarcinoma (AC) subtypes, was investigated. The associations between Thy1 and ITGA6 expression and clinical parameters and survival rate were analyzed separately. The THY1 and ITGA6 messenger RNA levels were significantly higher in both SC/ASC and AC tissues than in adjacent non-tumor tissues (all P<0.001). These results were subsequently confirmed by immunohistochemical analyses. Overexpression of Thy1 and ITGA6 was correlated with poor differentiation, large tumor size, lymph node metastasis and great invasiveness in SC/ASC (Thy1, P=0.045, P=0.005, P=0.003 and P=0.009, respectively, and ITGA6, P=0.029, P=0.011, P=0.009 and P=0.004, respectively) and AC (Thy1, P=0.027, P<0.001, P=0.003 and P 0.004, respectively, and ITGA6, P=0.002, P=0.003, P=0.006 and P=0.006, respectively). Both Thy1 and ITGA6 were expressed at higher levels in AC with advanced tumor-node-metastasis stage (TNM) than in AC with low TNM stage (P=0.001 and P=0.018, respectively). In addition, patients with elevated Thy1 or ITGA6 expression had shorter overall survival than those with negative Thy1 or ITGA6 expression. Multivariate Cox regression analysis demonstrated that Thy1 (SC/ASC, P=0.001 and AC, P=0.005) and ITGA6 (both P=0.003) were independent predictors of poor prognosis in both SC/ASC and AC patients. In conclusion, Thy1 and ITGA6 could be clinical prognostic markers for GBC.
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Affiliation(s)
- Dan-Hua Zhang
- Research Laboratory of Hepatobiliary Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Zhu-Lin Yang
- Research Laboratory of Hepatobiliary Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - En-Xiang Zhou
- Research Laboratory of Hepatobiliary Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Xiong-Ying Miao
- Research Laboratory of Hepatobiliary Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Qiong Zou
- Department of Pathology, Changde Central Hospital, Changde, Hunan 415000, P.R. China
| | - Jing-He Li
- Department of Pathology, Basic Medical Science College, Central South University, Changsha, Hunan 410011, P.R. China
| | - Lu-Feng Liang
- Department of Hepatobiliary and Pancreatic Surgery, Hunan Provincial People's Hospital, Changsha, Hunan 410007, P.R. China
| | - Gui-Xiang Zeng
- Department of Pathology, Loudi Central Hospital, Loudi, Hunan 417011, P.R. China
| | - Sen-Lin Chen
- Department of Pathology, Hunan Provincial Tumor Hospital, Changsha, Hunan 410013, P.R. China
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de Azevedo-Quintanilha IG, Vieira-de-Abreu A, Ferreira AC, Nascimento DO, Siqueira AM, Campbell RA, Teixeira Ferreira TP, Gutierrez TM, Ribeiro GM, E Silva PMR, Carvalho AR, Bozza PT, Zimmerman GA, Castro-Faria-Neto HC. Integrin αDβ2 (CD11d/CD18) mediates experimental malaria-associated acute respiratory distress syndrome (MA-ARDS). Malar J 2016; 15:393. [PMID: 27473068 PMCID: PMC4967320 DOI: 10.1186/s12936-016-1447-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Accepted: 07/20/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Malaria-associated acute respiratory distress syndrome (MA-ARDS) is a potentially lethal complication of clinical malaria. Acute lung injury in MA-ARDS shares features with ARDS triggered by other causes, including alveolar inflammation and increased alveolar-capillary permeability, leading to leak of protein-rich pulmonary oedema fluid. Mechanisms and physiologic alterations in MA-ARDS can be examined in murine models of this syndrome. Integrin αDβ2 is a member of the leukocyte, or β2 (CD18), sub-family of integrins, and emerging observations indicate that it has important activities in leukocyte adhesion, accumulation and signalling. The goal was to perform analysis of the lungs of mice wild type C57Bl/6 (a D (+/+) ) and Knockout C57Bl/6 (a D (-/-) ) with malaria-associated acute lung injury to better determine the relevancy of the murine models and investigate the mechanism of disease. METHODS C57BL/6 wild type (a D (+/+) ) and deficient for CD11d sub-unit (a D (-/-) ) mice were monitored after infection with 10(5) Plasmodium berghei ANKA. CD11d subunit expression RNA was measured by real-time polymerase chain reaction, vascular barrier integrity by Evans blue dye (EBD) exclusion and cytokines by ELISA. Protein and leukocytes were measured in bronchoalveolar lavage fluid (BALF) samples. Tissue cellularity was measured by the point-counting technique, F4/80 and VCAM-1 expression by immunohistochemistry. Respiratory function was analysed by non-invasive BUXCO and mechanical ventilation. RESULTS Alveolar inflammation, vascular and interstitial accumulation of monocytes and macrophages, and disrupted alveolar-capillary barrier function with exudation of protein-rich pulmonary oedema fluid were present in P. berghei-infected wild type mice and were improved in αDβ2-deficient animals. Key pro-inflammatory cytokines were also decreased in lung tissue from α D (-/-) mice, providing a mechanistic explanation for reduced alveolar-capillary inflammation and leak. CONCLUSIONS The results indicate that αDβ2 is an important inflammatory effector molecule in P. berghei-induced MA-ARDS, and that leukocyte integrins regulate critical inflammatory and pathophysiologic events in this model of complicated malaria. Genetic deletion of integrin subunit αD in mice, leading to deficiency of integrin αDβ2, alters lung inflammation and acute lung injury in a mouse model of MA-ARDS caused by P. berghei.
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Affiliation(s)
- Isaclaudia G de Azevedo-Quintanilha
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil.
| | - Adriana Vieira-de-Abreu
- Program in Molecular Medicine, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA.
| | - André Costa Ferreira
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil
| | - Daniele O Nascimento
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil
| | - Alessandra M Siqueira
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil
| | - Robert A Campbell
- Program in Molecular Medicine, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
| | - Tatiana P Teixeira Ferreira
- Laboratório de Inflamação, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Rio de Janeiro, Brazil
| | - Tatiana M Gutierrez
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil
| | - Gabriel M Ribeiro
- Laboratório de Engenharia Pulmonar no Programa de Engenharia Biomédica, Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia-COPPE/Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patricia M R E Silva
- Laboratório de Inflamação, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Rio de Janeiro, Brazil
| | - Alysson R Carvalho
- Laboratório de Fisiologia da Respiração, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patricia T Bozza
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil
| | - Guy A Zimmerman
- Program in Molecular Medicine, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
| | - Hugo C Castro-Faria-Neto
- Laboratório de Immunofarmacologia, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Ozório de Almeida, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, CEP 21045-900, Brazil.,Programa de Produtividade Científica, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil
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Cordeiro OG, Chypre M, Brouard N, Rauber S, Alloush F, Romera-Hernandez M, Bénézech C, Li Z, Eckly A, Coles MC, Rot A, Yagita H, Léon C, Ludewig B, Cupedo T, Lanza F, Mueller CG. Integrin-Alpha IIb Identifies Murine Lymph Node Lymphatic Endothelial Cells Responsive to RANKL. PLoS One 2016; 11:e0151848. [PMID: 27010197 PMCID: PMC4806919 DOI: 10.1371/journal.pone.0151848] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 03/04/2016] [Indexed: 12/31/2022] Open
Abstract
Microenvironment and activation signals likely imprint heterogeneity in the lymphatic endothelial cell (LEC) population. Particularly LECs of secondary lymphoid organs are exposed to different cell types and immune stimuli. However, our understanding of the nature of LEC activation signals and their cell source within the secondary lymphoid organ in the steady state remains incomplete. Here we show that integrin alpha 2b (ITGA2b), known to be carried by platelets, megakaryocytes and hematopoietic progenitors, is expressed by a lymph node subset of LECs, residing in medullary, cortical and subcapsular sinuses. In the subcapsular sinus, the floor but not the ceiling layer expresses the integrin, being excluded from ACKR4+ LECs but overlapping with MAdCAM-1 expression. ITGA2b expression increases in response to immunization, raising the possibility that heterogeneous ITGA2b levels reflect variation in exposure to activation signals. We show that alterations of the level of receptor activator of NF-κB ligand (RANKL), by overexpression, neutralization or deletion from stromal marginal reticular cells, affected the proportion of ITGA2b+ LECs. Lymph node LECs but not peripheral LECs express RANK. In addition, we found that lymphotoxin-β receptor signaling likewise regulated the proportion of ITGA2b+ LECs. These findings demonstrate that stromal reticular cells activate LECs via RANKL and support the action of hematopoietic cell-derived lymphotoxin.
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Affiliation(s)
- Olga G. Cordeiro
- CNRS UPR 3572, University of Strasbourg, Laboratory of Immunopathology and Therapeutic Chemistry/ MEDALIS, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
| | - Mélanie Chypre
- CNRS UPR 3572, University of Strasbourg, Laboratory of Immunopathology and Therapeutic Chemistry/ MEDALIS, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
- Prestwick Chemical, Blvd Gonthier d'Andernach, Parc d’innovation, 67400, Illkirch, France
| | - Nathalie Brouard
- INSERM, UMR_S949, Etablissement Français du Sang-Alsace, Faculté de Médecine, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Simon Rauber
- CNRS UPR 3572, University of Strasbourg, Laboratory of Immunopathology and Therapeutic Chemistry/ MEDALIS, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
| | - Farouk Alloush
- CNRS UPR 3572, University of Strasbourg, Laboratory of Immunopathology and Therapeutic Chemistry/ MEDALIS, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
| | | | - Cécile Bénézech
- BHF Centre for Cardiovascular Science, Queens Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Zhi Li
- Center for Immunology and Infection, Department of Biology, University of York, York, United Kingdom
| | - Anita Eckly
- INSERM, UMR_S949, Etablissement Français du Sang-Alsace, Faculté de Médecine, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Mark C. Coles
- Center for Immunology and Infection, Department of Biology, University of York, York, United Kingdom
| | - Antal Rot
- Center for Immunology and Infection, Department of Biology, University of York, York, United Kingdom
| | - Hideo Yagita
- Department of Immunology, Juntendo University School of Medicine, Tokyo, 113–8421, Japan
| | - Catherine Léon
- INSERM, UMR_S949, Etablissement Français du Sang-Alsace, Faculté de Médecine, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Burkhard Ludewig
- Institute of Immunobiology, Kantonspital St. Gallen, 9007, St. Gallen, Switzerland
| | - Tom Cupedo
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - François Lanza
- INSERM, UMR_S949, Etablissement Français du Sang-Alsace, Faculté de Médecine, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Christopher G. Mueller
- CNRS UPR 3572, University of Strasbourg, Laboratory of Immunopathology and Therapeutic Chemistry/ MEDALIS, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
- * E-mail:
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Harryman WL, Pond E, Singh P, Little AS, Eschbacher JM, Nagle RB, Cress AE. Laminin-binding integrin gene copy number alterations in distinct epithelial-type cancers. Am J Transl Res 2016; 8:940-954. [PMID: 27158381 PMCID: PMC4846938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/29/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND The laminin-binding integrin (LBI) family are cell adhesion molecules that are essential for invasion and metastasis of human epithelial cancers and cell adhesion mediated drug resistance. We investigated whether copy number alteration (CNA) or mutations of a five-gene signature (ITGB4, ITGA3, LAMB3, PLEC, and SYNE3), representing essential genes for LBI adhesion, would correlate with patient outcomes within human epithelial-type tumor data sets currently available in an open access format. METHODS We investigated the relative alteration frequency of an LBI signature panel (integrin β4 (ITGB4), integrin α3 (ITGA3), laminin β3 chain (LAMB3), plectin (PLEC), and nesprin 3 (SYNE3)), independent of the epithelial cancer type, within publically available and published data using cBioPortal and Oncomine software. We rank ordered the results using a 20% alteration frequency cut-off and limited the analysis to studies containing at least 100 samples. Kaplan-Meier survival curves were analyzed to determine if alterations in the LBI signature correlated with patient survival. The Oncomine data mining tool was used to compare the heat map expression of the LBI signature without SYNE3 (as this was not included in the Oncomine database) to drug resistance patterns. RESULTS Twelve different cancer types, representing 5,647 samples, contained at least a 20% alteration frequency of the five-gene LBI signature. The frequency of alteration ranged from 38.3% to 19.8%. Within the LBI signature, PLEC was the most commonly altered followed by LAMB3, ITGB4, ITGA3, and SYNE3 across all twelve cancer types. Within cancer types, there was little overlap of the individual amplified genes from each sample, suggesting different specific amplicons may alter the LBI adhesion structures. Of the twelve cancer types, overall survival was altered by CNA presence in bladder urothelial carcinoma (p=0.0143*) and cervical squamous cell carcinoma and endocervical adenocarcinoma (p=0.0432*). Querying the in vitro drug resistance profiles with the LBI signature demonstrated a positive correlation with cells resistant to inhibitors of HDAC (Vorinostat, Panobinostat) and topoisomerase II (Irinotecan). No correlation was found with the following agents: Bleomycin, Doxorubicin, Methotrexate, Gemcitabine, Docetaxel, Bortezomib, and Shikonen. CONCLUSIONS Our work has identified epithelial-types of human cancer that have significant CNA in our selected five-gene signature, which was based on the essential and genetically-defined functions of the protein product networks (in this case, the LBI axis). CNA of the gene signature not only predicted overall survival in bladder, cervical, and endocervical adenocarcinoma but also response to chemotherapy. This work suggests that future studies designed to optimize the gene signature are warranted. GENERAL SIGNIFICANCE The copy number alteration of structural components of the LBI axis in epithelial-type tumors may be promising biomarkers and rational targets for personalized therapy in preventing or arresting metastatic spread.
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Affiliation(s)
- William L Harryman
- The University of Arizona Cancer Center1515 N. Campbell Ave., Tucson, Arizona, United States
| | - Erika Pond
- The University of Arizona Cancer Center1515 N. Campbell Ave., Tucson, Arizona, United States
| | - Parminder Singh
- The University of Arizona Cancer Center1515 N. Campbell Ave., Tucson, Arizona, United States
| | - Andrew S Little
- Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center350 W. Thomas Rd., Phoenix, Arizona, United States
| | - Jennifer M Eschbacher
- Department of Pathology, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center350 W. Thomas Rd., Phoenix, Arizona, United States
| | - Raymond B Nagle
- The University of Arizona Cancer Center1515 N. Campbell Ave., Tucson, Arizona, United States
| | - Anne E Cress
- The University of Arizona Cancer Center1515 N. Campbell Ave., Tucson, Arizona, United States
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Paco S, Casserras T, Rodríguez MA, Jou C, Puigdelloses M, Ortez CI, Diaz-Manera J, Gallardo E, Colomer J, Nascimento A, Kalko SG, Jimenez-Mallebrera C. Transcriptome Analysis of Ullrich Congenital Muscular Dystrophy Fibroblasts Reveals a Disease Extracellular Matrix Signature and Key Molecular Regulators. PLoS One 2015; 10:e0145107. [PMID: 26670220 PMCID: PMC4686057 DOI: 10.1371/journal.pone.0145107] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/28/2015] [Indexed: 11/19/2022] Open
Abstract
Background Collagen VI related myopathies encompass a range of phenotypes with involvement of skeletal muscle, skin and other connective tissues. They represent a severe and relatively common form of congenital disease for which there is no treatment. Collagen VI in skeletal muscle and skin is produced by fibroblasts. Aims & Methods In order to gain insight into the consequences of collagen VI mutations and identify key disease pathways we performed global gene expression analysis of dermal fibroblasts from patients with Ullrich Congenital Muscular Dystrophy with and without vitamin C treatment. The expression data were integrated using a range of systems biology tools. Results were validated by real-time PCR, western blotting and functional assays. Findings We found significant changes in the expression levels of almost 600 genes between collagen VI deficient and control fibroblasts. Highly regulated genes included extracellular matrix components and surface receptors, including integrins, indicating a shift in the interaction between the cell and its environment. This was accompanied by a significant increase in fibroblasts adhesion to laminin. The observed changes in gene expression profiling may be under the control of two miRNAs, miR-30c and miR-181a, which we found elevated in tissue and serum from patients and which could represent novel biomarkers for muscular dystrophy. Finally, the response to vitamin C of collagen VI mutated fibroblasts significantly differed from healthy fibroblasts. Vitamin C treatment was able to revert the expression of some key genes to levels found in control cells raising the possibility of a beneficial effect of vitamin C as a modulator of some of the pathological aspects of collagen VI related diseases.
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Affiliation(s)
- Sonia Paco
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
| | - Teresa Casserras
- Bioinformatics Core Facility, IDIBAPS, Hospital Clinic, Barcelona, Spain
| | - Maria Angels Rodríguez
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
| | - Cristina Jou
- Pathology Department, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Montserrat Puigdelloses
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
| | - Carlos I. Ortez
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
| | - Jordi Diaz-Manera
- Neuromuscular Diseases Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Eduardo Gallardo
- Neuromuscular Diseases Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Jaume Colomer
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
| | - Andrés Nascimento
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
- Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Susana G. Kalko
- Bioinformatics Core Facility, IDIBAPS, Hospital Clinic, Barcelona, Spain
| | - Cecilia Jimenez-Mallebrera
- Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
- Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- * E-mail:
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Savino W, Mendes-da-Cruz DA, Golbert DCF, Riederer I, Cotta-de-Almeida V. Laminin-Mediated Interactions in Thymocyte Migration and Development. Front Immunol 2015; 6:579. [PMID: 26635793 PMCID: PMC4648024 DOI: 10.3389/fimmu.2015.00579] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 10/29/2015] [Indexed: 11/30/2022] Open
Abstract
Intrathymic T-cell differentiation is a key process for the development and maintenance of cell-mediated immunity, and occurs concomitantly to highly regulated migratory events. We have proposed a multivectorial model for describing intrathymic thymocyte migration. One of the individual vectors comprises interactions mediated by laminins (LMs), a heterotrimeric protein family of the extracellular matrix. Several LMs are expressed in the thymus, being produced by microenvironmental cells, particularly thymic epithelial cells (TECs). Also, thymocytes and epithelial cells express integrin-type LM receptors. Functionally, it has been reported that the dy/dy mutant mouse (lacking the LM isoform 211) exhibits defective thymocyte differentiation. Several data show haptotactic effects of LMs upon thymocytes, as well as their adhesion on TECs; both effects being prevented by anti-LM or anti-LM receptor antibodies. Interestingly, LM synergizes with chemokines to enhance thymocyte migration, whereas classe-3 semaphorins and B ephrins, which exhibit chemorepulsive effects in the thymus, downregulate LM-mediated migratory responses of thymocytes. More recently, we showed that knocking down the ITGA6 gene (which encodes the α6 integrin chain of LM receptors) in human TECs modulates a large number of cell migration-related genes and results in changes of adhesion pattern of thymocytes onto the thymic epithelium. Overall, LM-mediated interactions can be placed at the cross-road of the multivectorial process of thymocyte migration, with a direct influence per se, as well as by modulating other molecular interactions associated with the intrathymic-trafficking events.
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Affiliation(s)
- Wilson Savino
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation , Rio de Janeiro , Brazil
| | | | | | - Ingo Riederer
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation , Rio de Janeiro , Brazil
| | - Vinicius Cotta-de-Almeida
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation , Rio de Janeiro , Brazil
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50
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Tiwari P, Kumar A, Das RN, Malhotra V, VijayRaghavan K. A Tendon Cell Specific RNAi Screen Reveals Novel Candidates Essential for Muscle Tendon Interaction. PLoS One 2015; 10:e0140976. [PMID: 26488612 PMCID: PMC4619581 DOI: 10.1371/journal.pone.0140976] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 10/02/2015] [Indexed: 01/01/2023] Open
Abstract
Tendons are fibrous connective tissue which connect muscles to the skeletal elements thus acting as passive transmitters of force during locomotion and provide appropriate body posture. Tendon-derived cues, albeit poorly understood, are necessary for proper muscle guidance and attachment during development. In the present study, we used dorsal longitudinal muscles of Drosophila and their tendon attachment sites to unravel the molecular nature of interactions between muscles and tendons. We performed a genetic screen using RNAi-mediated knockdown in tendon cells to find out molecular players involved in the formation and maintenance of myotendinous junction and found 21 candidates out of 2507 RNAi lines screened. Of these, 19 were novel molecules in context of myotendinous system. Integrin-βPS and Talin, picked as candidates in this screen, are known to play important role in the cell-cell interaction and myotendinous junction formation validating our screen. We have found candidates with enzymatic function, transcription activity, cell adhesion, protein folding and intracellular transport function. Tango1, an ER exit protein involved in collagen secretion was identified as a candidate molecule involved in the formation of myotendinous junction. Tango1 knockdown was found to affect development of muscle attachment sites and formation of myotendinous junction. Tango1 was also found to be involved in secretion of Viking (Collagen type IV) and BM-40 from hemocytes and fat cells.
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Affiliation(s)
- Prabhat Tiwari
- National Centre for Biological Sciences-Tata Institute of Fundamental Research, Bangalore, India
| | - Arun Kumar
- National Centre for Biological Sciences-Tata Institute of Fundamental Research, Bangalore, India
| | - Rudra Nayan Das
- National Centre for Biological Sciences-Tata Institute of Fundamental Research, Bangalore, India
| | | | - K. VijayRaghavan
- National Centre for Biological Sciences-Tata Institute of Fundamental Research, Bangalore, India
- * E-mail:
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