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Wang F, Guan S, Xing M, Qian W, Qiu J, Liu X. A rechargeable coating with temporal-sequence antibacterial activity and soft tissue sealing. Bioact Mater 2024; 39:224-238. [PMID: 38832306 PMCID: PMC11145072 DOI: 10.1016/j.bioactmat.2024.05.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/27/2024] [Accepted: 05/14/2024] [Indexed: 06/05/2024] Open
Abstract
Transcutaneous implants that penetrate through skin or mucosa are susceptible to bacteria invasion and lack proper soft tissue sealing. Traditional antibacterial strategies primarily focus on bacterial eradication, but excessive exposure to bactericidal agents can induce noticeable tissue damage. Herein, a rechargeable model (HPI-Ti) was constructed using perylene polyimide, an aqueous battery material, achieving temporal-sequence regulation of bacterial killing and soft tissue sealing. Charge storage within HPI-Ti is achieved after galvanostatic charge, and chemical discharge is initiated when immersed in physiological environments. During the early discharge stage, post-charging HPI-Ti demonstrates an antibacterial rate of 99.96 ± 0.01 % for 24 h, preventing biofilm formation. Contact-dependent violent electron transfer between bacteria and the material causes bacteria death. In the later discharge stage, the attenuated discharging status creates a gentler electron-transfer micro-environment for fibroblast proliferation. After discharge, the antibacterial activity can be reinstated by recharge against potential reinfection. The antibacterial efficacy and soft tissue compatibility were verified in vivo. These results demonstrate the potential of the charge-transfer-based model in reconciling antibacterial efficacy with tissue compatibility.
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Affiliation(s)
- Fang Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Shiwei Guan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Min Xing
- Shanghai Xuhui District Dental Center, Shanghai, 200032, PR China
| | - Wenhao Qian
- Shanghai Xuhui District Dental Center, Shanghai, 200032, PR China
| | - Jiajun Qiu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Biological Science and Medical Engineering, Donghua University, Shanghai, 201620, PR China
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2
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Peerapen P, Boonmark W, Chantarasaka S, Thongboonkerd V. Trigonelline prevents high-glucose-induced endothelial-to-mesenchymal transition, oxidative stress, mitochondrial dysfunction, and impaired angiogenic activity in human endothelial EA.hy926 cells. Biomed Pharmacother 2024; 179:117320. [PMID: 39191024 DOI: 10.1016/j.biopha.2024.117320] [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: 06/14/2024] [Revised: 08/14/2024] [Accepted: 08/21/2024] [Indexed: 08/29/2024] Open
Abstract
Trigonelline (TRIG) is a natural compound in an alkaloid family found in diverse plants. This compound exerts anti-inflammatory, anti-allergic, anti-oxidative and anti-fibrotic activities in several disease models. However, its beneficial role in endothelial injury, especially induced by diabetes, is unclear. We, therefore, evaluated the effects of TRIG on the cellular proteome of human endothelial (EA.hy926) cells followed by functional validation in high-glucose (HG)-induced endothelial deteriorations. Label-free quantification using nanoLC-ESI-Qq-TOF MS/MS revealed 40 downregulated and 29 upregulated proteins induced by TRIG. Functional enrichment analysis using DAVID and REVIGO tools suggested the involvement of these altered proteins in several biological processes and molecular functions, particularly cell-cell adhesion, ATP metabolic process, cell redox homeostasis, cadherin binding, and ATP hydrolysis activity. Experimental validation showed that HG triggered endothelial-to-mesenchymal transition (EndMT) (as demonstrated by increased spindle index and mesenchymal markers, i.e., fibronectin and vimentin, and decreased endothelial markers, i.e., PECAM-1 and VE-cadherin), increased oxidized proteins, and reduced intracellular ATP, active mitochondria, endothelial tube/mesh formation and VEGF secretion. However, TRIG successfully abolished all these defects induced by HG. These data indicate that TRIG prevents HG-induced EndMT, oxidative stress, mitochondrial dysfunction, and impaired angiogenic activity in human endothelial cells.
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Affiliation(s)
- Paleerath Peerapen
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Wanida Boonmark
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Suwichaya Chantarasaka
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
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3
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Ding S, Chen Y, Huang C, Song L, Liang Z, Wei B. Perception and response of skeleton to mechanical stress. Phys Life Rev 2024; 49:77-94. [PMID: 38564907 DOI: 10.1016/j.plrev.2024.03.011] [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: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
Mechanical stress stands as a fundamental factor in the intricate processes governing the growth, development, morphological shaping, and maintenance of skeletal mass. The profound influence of stress in shaping the skeletal framework prompts the assertion that stress essentially births the skeleton. Despite this acknowledgment, the mechanisms by which the skeleton perceives and responds to mechanical stress remain enigmatic. In this comprehensive review, our scrutiny focuses on the structural composition and characteristics of sclerotin, leading us to posit that it serves as the primary structure within the skeleton responsible for bearing and perceiving mechanical stress. Furthermore, we propose that osteocytes within the sclerotin emerge as the principal mechanical-sensitive cells, finely attuned to perceive mechanical stress. And a detailed analysis was conducted on the possible transmission pathways of mechanical stress from the extracellular matrix to the nucleus.
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Affiliation(s)
- Sicheng Ding
- Department of Minimally invasive spine surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Yiren Chen
- Department of Minimally invasive spine surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Chengshuo Huang
- Department of Minimally invasive spine surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Lijun Song
- Reproductive Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Zhen Liang
- Department of Minimally invasive spine surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China.
| | - Bo Wei
- Department of Minimally invasive spine surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China.
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4
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Bedi A, Choi K, Keane C, Bolger-Munro M, Ambrose AR, Gold MR. WAVE2 Regulates Actin-Dependent Processes Induced by the B Cell Antigen Receptor and Integrins. Cells 2023; 12:2704. [PMID: 38067132 PMCID: PMC10705906 DOI: 10.3390/cells12232704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/22/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
B cell antigen receptor (BCR) signaling induces actin cytoskeleton remodeling by stimulating actin severing, actin polymerization, and the nucleation of branched actin networks via the Arp2/3 complex. This enables B cells to spread on antigen-bearing surfaces in order to increase antigen encounters and to form an immune synapse (IS) when interacting with antigen-presenting cells (APCs). Although the WASp, N-WASp, and WAVE nucleation-promoting factors activate the Arp2/3 complex, the role of WAVE2 in B cells has not been directly assessed. We now show that both WAVE2 and the Arp2/3 complex localize to the peripheral ring of branched F-actin when B cells spread on immobilized anti-Ig antibodies. The siRNA-mediated depletion of WAVE2 reduced and delayed B cell spreading on immobilized anti-Ig, and this was associated with a thinner peripheral F-actin ring and reduced actin retrograde flow compared to control cells. Depleting WAVE2 also impaired integrin-mediated B cell spreading on fibronectin and the LFA-1-induced formation of actomyosin arcs. Actin retrograde flow amplifies BCR signaling at the IS, and we found that depleting WAVE2 reduced microcluster-based BCR signaling and signal amplification at the IS, as well as B cell activation in response to antigen-bearing cells. Hence, WAVE2 contributes to multiple actin-dependent processes in B lymphocytes.
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Affiliation(s)
- Abhishek Bedi
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada
| | - Kate Choi
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada
| | - Connor Keane
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada
| | - Madison Bolger-Munro
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada
| | - Ashley R Ambrose
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada
| | - Michael R Gold
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada
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5
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Schmitt HM, Hake KM, Perkumas KM, Lê BM, Suarez MF, De Ieso ML, Rahman RS, Johnson WM, Gomez-Caraballo M, Ashley-Koch AE, Hauser MA, Stamer WD. Lysyl oxidase-like 1-antisense 1 (LOXL1-AS1) lncRNA differentially regulates gene and protein expression, signaling and morphology of human ocular cells. Hum Mol Genet 2023; 32:3053-3062. [PMID: 37540217 PMCID: PMC10586201 DOI: 10.1093/hmg/ddad128] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/19/2023] [Accepted: 08/01/2023] [Indexed: 08/05/2023] Open
Abstract
Pseudoexfoliation glaucoma (PEXG) is characterized by dysregulated extracellular matrix (ECM) homeostasis that disrupts conventional outflow function and increases intraocular pressure (IOP). Prolonged IOP elevation results in optic nerve head damage and vision loss. Uniquely, PEXG is a form of open angle glaucoma that has variable penetrance, is difficult to treat and does not respond well to common IOP-lowering pharmaceuticals. Therefore, understanding modulators of disease severity will aid in targeted therapies for PEXG. Genome-wide association studies have identified polymorphisms in the long non-coding RNA lysyl oxidase-like 1-antisense 1 (LOXL1-AS1) as a risk factor for PEXG. Risk alleles, oxidative stress and mechanical stretch all alter LOXL1-AS1 expression. As a long non-coding RNA, LOXL1-AS1 binds hnRNPL and regulates global gene expression. In this study, we focus on the role of LOXL1-AS1 in the ocular cells (trabecular meshwork and Schlemm's canal) that regulate IOP. We show that selective knockdown of LOXL1-AS1 leads to cell-type-specific changes in gene expression, ECM homeostasis, signaling and morphology. These results implicate LOXL1-AS1 as a modulator of cellular homeostasis, altering cell contractility and ECM turnover, both of which are well-known contributors to PEXG. These findings support LOXL1-AS1 as a key target for modifying the disease.
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Affiliation(s)
- Heather M Schmitt
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
- Department of Medicine, Duke University, Durham, NC 27710, USA
| | - Kristyn M Hake
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
- Department of Medicine, Duke University, Durham, NC 27710, USA
| | | | - Brandon M Lê
- Department of Medicine, Duke University, Durham, NC 27710, USA
| | - Maria F Suarez
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
- Department of Medicine, Duke University, Durham, NC 27710, USA
| | | | - Rashad S Rahman
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
| | - William M Johnson
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
- Department of Medicine, Duke University, Durham, NC 27710, USA
| | | | | | - Michael A Hauser
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
- Department of Medicine, Duke University, Durham, NC 27710, USA
| | - W Daniel Stamer
- Department of Ophthalmology, Duke University, Durham, NC 27710, USA
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6
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Mauro D, Gandolfo S, Tirri E, Schett G, Maksymowych WP, Ciccia F. The bone marrow side of axial spondyloarthritis. Nat Rev Rheumatol 2023:10.1038/s41584-023-00986-6. [PMID: 37407716 DOI: 10.1038/s41584-023-00986-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2023] [Indexed: 07/07/2023]
Abstract
Spondyloarthritis (SpA) is characterized by the infiltration of innate and adaptive immune cells into entheses and bone marrow. Molecular, cellular and imaging evidence demonstrates the presence of bone marrow inflammation, a hallmark of SpA. In the spine and the peripheral joints, bone marrow is critically involved in the pathogenesis of SpA. Evidence suggests that bone marrow inflammation is associated with enthesitis and that there are roles for mechano-inflammation and intestinal inflammation in bone marrow involvement in SpA. Specific cell types (including mesenchymal stem cells, innate lymphoid cells and γδ T cells) and mediators (Toll-like receptors and cytokines such as TNF, IL-17A, IL-22, IL-23, GM-CSF and TGFβ) are involved in these processes. Using this evidence to demonstrate a bone marrow rather than an entheseal origin for SpA could change our understanding of the disease pathogenesis and the relevant therapeutic approach.
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Affiliation(s)
- Daniele Mauro
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Saviana Gandolfo
- Unit of Rheumatology, San Giovanni Bosco Hospital, Naples, Italy
| | - Enrico Tirri
- Unit of Rheumatology, San Giovanni Bosco Hospital, Naples, Italy
| | - Georg Schett
- Department of Internal Medicine 3, Friedrich-Alexander University (FAU) Erlangen-Nuremberg and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum Immuntherapie (DZI), FAU Erlangen-Nuremberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | | | - Francesco Ciccia
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy.
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7
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Moran HR, Mosimann C. Rosettes guide the way for mesodermal MET. Dev Cell 2023; 58:917-918. [PMID: 37279697 DOI: 10.1016/j.devcel.2023.04.018] [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: 04/24/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 06/08/2023]
Abstract
Mesenchymal-epithelial transition (MET) is a critical process in development, guiding tissue morphogenesis. In this issue of Developmental Cell, two studies, one by Gredler et al. and one by Abboud Asleh et al., reveal how multicellular rosettes critically contribute to MET in earliest notochord and lateral plate mesoderm formation, respectively.
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Affiliation(s)
- Hannah R Moran
- Section of Developmental Biology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Christian Mosimann
- Section of Developmental Biology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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8
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Pernier J, Santos MCD, Souissi M, Joly A, Narassimprakash H, Rossier O, Giannone G, Helfer E, Sengupta K, Clainche CL. Talin and kindlin cooperate to control the density of integrin clusters. J Cell Sci 2023; 136:307144. [PMID: 37083041 DOI: 10.1242/jcs.260746] [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: 10/21/2022] [Accepted: 03/03/2023] [Indexed: 04/22/2023] Open
Abstract
Focal adhesions are composed of transmembrane integrins, linking the extracellular matrix to the actomyosin cytoskeleton, via cytoplasmic proteins. Adhesion depends on the activation of integrins. Talin and kindlin proteins are intracellular activators of integrins that bind to β-integrin cytoplasmic tails. Integrin activation and clustering through extracellular ligands guide the organization of adhesion complexes. However, the roles of talin and kindlin in this process are poorly understood. To determine the contribution of talin, kindlin, lipids and actomyosin in integrin clustering, we used a biomimetic in vitro system, made of giant unilamellar vesicles, containing transmembrane integrins (herein αIIbβ3), with purified talin (talin-1), kindlin (kindlin-2, also known as FERMT2) and actomyosin. Here, we show that talin and kindlin individually have the ability to cluster integrins. Talin and kindlin synergize to induce the formation of larger integrin clusters containing the three proteins. Comparison of protein density reveals that kindlin increases talin and integrin density, whereas talin does not affect kindlin and integrin density. Finally, kindlin increases integrin-talin-actomyosin coupling. Our study unambiguously demonstrates how kindlin and talin cooperate to induce integrin clustering, which is a major parameter for cell adhesion.
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Affiliation(s)
- Julien Pernier
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Marcelina Cardoso Dos Santos
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Mariem Souissi
- Aix Marseille Univ, CNRS, CINAM, Turing Centre for Living Systems, Marseille, France
| | - Adrien Joly
- Université de Bordeaux, CNRS, Interdisciplinary Institute for Neuroscience, IINS, UMR 5297, F-33000 Bordeaux, France
| | - Hemalatha Narassimprakash
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Olivier Rossier
- Université de Bordeaux, CNRS, Interdisciplinary Institute for Neuroscience, IINS, UMR 5297, F-33000 Bordeaux, France
| | - Grégory Giannone
- Université de Bordeaux, CNRS, Interdisciplinary Institute for Neuroscience, IINS, UMR 5297, F-33000 Bordeaux, France
| | - Emmanuèle Helfer
- Aix Marseille Univ, CNRS, CINAM, Turing Centre for Living Systems, Marseille, France
| | - Kheya Sengupta
- Aix Marseille Univ, CNRS, CINAM, Turing Centre for Living Systems, Marseille, France
| | - Christophe Le Clainche
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
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9
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Bhattacharjya S. The structural basis of β2 integrin intra-cellular multi-protein complexes. Biophys Rev 2022; 14:1183-1195. [PMID: 36345283 PMCID: PMC9636337 DOI: 10.1007/s12551-022-00995-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/24/2022] [Indexed: 01/03/2023] Open
Abstract
In multicellular organisms, cell adhesion is a pivotal physiological process which is essential for cell-cell communications, cell migration, and interactions with extracellular matrix. Integrins, a family of large hetero-dimeric type I membrane proteins, are known for driving cell adhesion functions. Among 24 different integrins, four β2 integrins, αL β2, αM β2, αX β2 and αD β2, are specific for cell adhesion and migration of leukocytes. Many cytosolic proteins interact with short cytosolic tails (CTs) of β2 and other integrins which are essential in bi-directional signaling processes. Further, phosphorylation of CTs of integrins regulates binding of intra-cellular proteins and signaling systems. In this review, recent advances in structures and interactions of multi-protein complexes of integrin tails, with a focus on β2 integrin, and cytosolic proteins are discussed along with a proposed future direction.
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Affiliation(s)
- Surajit Bhattacharjya
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551 Singapore
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10
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Zanjani LS, Vafaei S, Abolhasani M, Fattahi F, Madjd Z. Prognostic value of Talin-1 in renal cell carcinoma and its association with B7-H3. Cancer Biomark 2022; 35:269-292. [DOI: 10.3233/cbm-220018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
METHODS: Talin-1 protein was demonstrated as a potential prognostic marker in renal cell carcinoma (RCC) using bioinformatics analysis. We, therefore, examined the protein expression levels and prognostic significance of Talin-1 with a clinical follow-up in a total of 269 tissue specimens from three important subtypes of RCC and 30 adjacent normal samples using immunohistochemistry. Then, we used combined analysis with B7-H3 to investigate higher prognostic values. RESULTS: The results showed that high membranous and cytoplasmic expression of Talin-1 was significantly associated with advanced nucleolar grade, microvascular invasion, histological tumor necrosis, and invasion to Gerota’s fascia in clear cell RCC (ccRCC). In addition, high membranous and cytoplasmic expression of Talin-1 was found to be associated with significantly poorer disease-specific survival (DSS) and progression-free survival (PFS). Moreover, increased cytoplasmic expression of Talin-1High/B7-H3High compared to the other phenotypes was associated with tumor aggressiveness and progression of the disease, and predicted a worse clinical outcome, which may be an effective biomarker to identify ccRCC patients at high risk of recurrence and metastasis. CONCLUSIONS: Collectively, these observations indicate that Talin-1 is an important molecule involved in the spread and progression of ccRCC when expressed particularly in the cytoplasm and may serve as a novel prognostic biomarker in this subtype. Furthermore, a combined analysis of Talin-1/B7-H3 indicated an effective biomarker to predict the progression of disease and prognosis in ccRCC.
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Affiliation(s)
- Leili Saeednejad Zanjani
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Somayeh Vafaei
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Maryam Abolhasani
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Hasheminejad Kidney Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Fahimeh Fattahi
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Madjd
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
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11
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Plasma Concentrations of Vinculin versus Talin-1 in Coronary Artery Disease. Med Sci (Basel) 2022; 10:medsci10030046. [PMID: 36135831 PMCID: PMC9502881 DOI: 10.3390/medsci10030046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Vinculin and talin-1, which are cytoskeletal proteins affecting focal adhesions, were reported to be down-expressed in atherosclerotic lesions. Recently, we reported high concentrations of plasma talin-1 in patients with coronary artery disease (CAD). However, blood vinculin concentrations in CAD patients have not been clarified. Plasma vinculin concentrations as well as talin-1 were studied in 327 patients in whom coronary angiography was performed. CAD was proven in 177 patients (1-vessel, n = 79; 2-vessel, n = 57; 3-vessel disease, n = 41). However, vinculin concentrations were not markedly different between the CAD(-) and CAD groups (median 122.5 vs. 119.6 pg/mL, p = 0.325) or among patients with CAD(-), 1-, 2-, and 3-vessel diseases (122.5, 112.8, 107.9, and 137.2 pg/mL, p = 0.202). In contrast, talin-1 concentrations were higher in CAD than the CAD(-) group (0.29 vs. 0.23 ng/mL, p = 0.006) and increased stepwise in the number of stenotic vessels: 0.23 in CAD(-), 0.28 in 1-vessel, 0.29 in 2-vessel, and 0.33 ng/mL in 3-vessel disease (p = 0.043). No correlation was observed between vinculin and talin-1 concentrations. In multivariate analysis, vinculin concentrations were not a factor for CAD. In conclusion, plasma vinculin concentrations in patients with CAD were not high and were not associated with the presence or severity of CAD.
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12
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Azizi L, Varela L, Turkki P, Mykuliak VV, Korpela S, Ihalainen TO, Church J, Hytönen VP, Goult BT. Talin variant P229S compromises integrin activation and associates with multifaceted clinical symptoms. Hum Mol Genet 2022; 31:4159-4172. [PMID: 35861643 PMCID: PMC9759328 DOI: 10.1093/hmg/ddac163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/13/2022] [Accepted: 07/12/2022] [Indexed: 01/21/2023] Open
Abstract
Adhesion of cells to the extracellular matrix (ECM) must be exquisitely coordinated to enable development and tissue homeostasis. Cell-ECM interactions are regulated by multiple signalling pathways that coordinate the activation state of the integrin family of ECM receptors. The protein talin is pivotal in this process, and talin's simultaneous interactions with the cytoplasmic tails of the integrins and the plasma membrane are essential to enable robust, dynamic control of integrin activation and cell-ECM adhesion. Here, we report the identification of a de novo heterozygous c.685C>T (p.Pro229Ser) variant in the TLN1 gene from a patient with a complex phenotype. The mutation is located in the talin head region at the interface between the F2 and F3 domains. The characterization of this novel p.P229S talin variant reveals the disruption of adhesion dynamics that result from disturbance of the F2-F3 domain interface in the talin head. Using biophysical, computational and cell biological techniques, we find that the variant perturbs the synergy between the integrin-binding F3 and the membrane-binding F2 domains, compromising integrin activation, adhesion and cell migration. Whilst this remains a variant of uncertain significance, it is probable that the dysregulation of adhesion dynamics we observe in cells contributes to the multifaceted clinical symptoms of the patient and may provide insight into the multitude of cellular processes dependent on talin-mediated adhesion dynamics.
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Affiliation(s)
| | | | | | - Vasyl V Mykuliak
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Sanna Korpela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Teemu O Ihalainen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Joseph Church
- To whom correspondence should be addressed. (Benjamin T. Goult), (Vesa P. Hytönen), (Joe Church)
| | - Vesa P Hytönen
- To whom correspondence should be addressed. (Benjamin T. Goult), (Vesa P. Hytönen), (Joe Church)
| | - Benjamin T Goult
- To whom correspondence should be addressed. (Benjamin T. Goult), (Vesa P. Hytönen), (Joe Church)
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Moura AA, Bezerra MJB, Martins AMA, Borges DP, Oliveira RTG, Oliveira RM, Farias KM, Viana AG, Carvalho GGC, Paier CRK, Sousa MV, Fontes W, Ricart CAO, Moraes MEA, Magalhães SMM, Furtado CLM, Moraes-Filho MO, Pessoa C, Pinheiro RF. Global Proteomics Analysis of Bone Marrow: Establishing Talin-1 and Centrosomal Protein of 55 kDa as Potential Molecular Signatures for Myelodysplastic Syndromes. Front Oncol 2022; 12:833068. [PMID: 35814389 PMCID: PMC9257025 DOI: 10.3389/fonc.2022.833068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/18/2022] [Indexed: 12/02/2022] Open
Abstract
Myelodysplastic syndrome (MDS) is a hematological disorder characterized by abnormal stem cell differentiation and a high risk of acute myeloid leukemia transformation. Treatment options for MDS are still limited, making the identification of molecular signatures for MDS progression a vital task. Thus, we evaluated the proteome of bone marrow plasma from patients (n = 28) diagnosed with MDS with ring sideroblasts (MDS-RS) and MDS with blasts in the bone marrow (MDS-EB) using label-free mass spectrometry. This strategy allowed the identification of 1,194 proteins in the bone marrow plasma samples. Polyubiquitin-C (UBC), moesin (MSN), and Talin-1 (TLN1) showed the highest abundances in MDS-EB, and centrosomal protein of 55 kDa (CEP55) showed the highest relative abundance in the bone marrow plasma of MDS-RS patients. In a follow-up, in the second phase of the study, expressions of UBC, MSN, TLN1, and CEP55 genes were evaluated in bone marrow mononuclear cells from 45 patients by using qPCR. This second cohort included only seven patients from the first study. CEP55, MSN, and UBC expressions were similar in mononuclear cells from MDS-RS and MDS-EB individuals. However, TLN1 gene expression was greater in mononuclear cells from MDS-RS (p = 0.049) as compared to MDS-EB patients. Irrespective of the MDS subtype, CEP55 expression was higher (p = 0.045) in MDS patients with abnormal karyotypes, while MSN, UBC, and TALIN1 transcripts were similar in MDS with normal vs. abnormal karyotypes. In conclusion, proteomic and gene expression approaches brought evidence of altered TLN1 and CEP55 expressions in cellular and non-cellular bone marrow compartments of patients with low-risk (MDS-RS) and high-risk (MDS-EB) MDSs and with normal vs. abnormal karyotypes. As MDS is characterized by disrupted apoptosis and chromosomal alterations, leading to mitotic slippage, TLN1 and CEP55 represent potential markers for MDS prognosis and/or targeted therapy.
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Affiliation(s)
- Arlindo A. Moura
- Graduate Program in Animal Science, Federal University of Ceará, Fortaleza, Brazil
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Biotechnology (Renorbio), Federal University of Ceará, Fortaleza, Brazil
- *Correspondence: Arlindo A. Moura, ; Claudia Pessoa, ; Ronald F. Pinheiro,
| | - Maria Julia B. Bezerra
- Graduate Program in Animal Science, Federal University of Ceará, Fortaleza, Brazil
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Aline M. A. Martins
- Laboratory of Protein Chemistry and Biochemistry, The University of Brasília, Brasília, Brazil
| | - Daniela P. Borges
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Medical Sciences, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Roberta T. G. Oliveira
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Medical Sciences, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Raphaela M. Oliveira
- Laboratory of Protein Chemistry and Biochemistry, The University of Brasília, Brasília, Brazil
| | - Kaio M. Farias
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Biotechnology (Renorbio), Federal University of Ceará, Fortaleza, Brazil
| | - Arabela G. Viana
- Graduate Program in Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Guilherme G. C. Carvalho
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Pharmacology, Federal University of Ceará, Fortaleza, Brazil
| | - Carlos R. K. Paier
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Translational Medicine, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Marcelo V. Sousa
- Laboratory of Protein Chemistry and Biochemistry, The University of Brasília, Brasília, Brazil
| | - Wagner Fontes
- Laboratory of Protein Chemistry and Biochemistry, The University of Brasília, Brasília, Brazil
| | - Carlos A. O. Ricart
- Laboratory of Protein Chemistry and Biochemistry, The University of Brasília, Brasília, Brazil
| | - Maria Elisabete A. Moraes
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Translational Medicine, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Silvia M. M. Magalhães
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Medical Sciences, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Cristiana L. M. Furtado
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Translational Medicine, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Experimental Biology Center, NUBEX, The University of Fortaleza (Unifor), Fortaleza, Brazil
| | - Manoel O. Moraes-Filho
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Translational Medicine, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Claudia Pessoa
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Biotechnology (Renorbio), Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Pharmacology, Federal University of Ceará, Fortaleza, Brazil
- *Correspondence: Arlindo A. Moura, ; Claudia Pessoa, ; Ronald F. Pinheiro,
| | - Ronald F. Pinheiro
- Drug Research and Development Center (NPDM), The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- Graduate Program in Medical Sciences, The School of Medicine, Federal University of Ceará, Fortaleza, Brazil
- *Correspondence: Arlindo A. Moura, ; Claudia Pessoa, ; Ronald F. Pinheiro,
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Gahmberg CG, Grönholm M, Madhavan S. Regulation of Dynamic Cell Adhesion by Integrin-Integrin Crosstalk. Cells 2022; 11:cells11101685. [PMID: 35626722 PMCID: PMC9140058 DOI: 10.3390/cells11101685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 02/07/2023] Open
Abstract
Most cells express several integrins. The integrins are able to respond to various cellular functions and needs by modifying their own activation state, but in addition by their ability to regulate each other by activation or inhibition. This crosstalk or transdominant regulation is strictly controlled. The mechanisms resulting in integrin crosstalk are incompletely understood, but they often involve intracellular signalling routes also used by other cell surface receptors. Several studies show that the integrin cytoplasmic tails bind to a number of cytoskeletal and adaptor molecules in a regulated manner. Recent work has shown that phosphorylations of integrins and key intracellular molecules are of pivotal importance in integrin-cytoplasmic interactions, and these in turn affect integrin activity and crosstalk. The integrin β-chains play a central role in regulating crosstalk. In addition to Integrin-integrin crosstalk, crosstalk may also occur between integrins and related receptors, including other adhesion receptors, growth factor and SARS-CoV-2 receptors.
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Affiliation(s)
- Carl G. Gahmberg
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; (M.G.); (S.M.)
- Correspondence: ; Tel.: +358-50-539-9439
| | - Mikaela Grönholm
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; (M.G.); (S.M.)
- Drug Research Program, Faculty of Pharmacy, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland
| | - Sudarrshan Madhavan
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; (M.G.); (S.M.)
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miRNA-guided reprogramming of glucose and glutamine metabolism and its impact on cell adhesion/migration during solid tumor progression. Cell Mol Life Sci 2022; 79:216. [PMID: 35348905 PMCID: PMC8964646 DOI: 10.1007/s00018-022-04228-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 12/13/2022]
Abstract
MicroRNAs (miRNAs) are small, non-coding RNAs about 22 nucleotides in length that regulate the expression of target genes post-transcriptionally, and are highly involved in cancer progression. They are able to impact a variety of cell processes such as proliferation, apoptosis and differentiation and can consequently control tumor initiation, tumor progression and metastasis formation. miRNAs can regulate, at the same time, metabolic gene expression which, in turn, influences relevant traits of malignancy such as cell adhesion, migration and invasion. Since the interaction between metabolism and adhesion or cell movement has not, to date, been well understood, in this review, we will specifically focus on miRNA alterations that can interfere with some metabolic processes leading to the modulation of cancer cell movement. In addition, we will analyze the signaling pathways connecting metabolism and adhesion/migration, alterations that often affect cancer cell dissemination and metastasis formation.
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Nishtala K, Panigrahi T, Shetty R, Kumar D, Khamar P, Mohan RR, Deshpande V, Ghosh A. Quantitative Proteomics Reveals Molecular Network Driving Stromal Cell Differentiation: Implications for Corneal Wound Healing. Int J Mol Sci 2022; 23:ijms23052572. [PMID: 35269714 PMCID: PMC8910342 DOI: 10.3390/ijms23052572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 11/16/2022] Open
Abstract
The differentiation of keratocytes to fibroblasts and myofibroblasts is an essential requisite during corneal wound closure. The aim of this study is to uncover factors involved in differentiation-dependent alteration in the protein profile of human corneal stromal cells using quantitative proteomics. Human corneal fibroblasts were cultured and differentiated into keratocytes in serum-free media and myofibroblasts through treatment with TGF-β. The protein cell lysates from the donors were tryptic and were digested and labeled using a 3-plex iTRAQ kit. The labeled peptides were subjected to LCMS analysis. Biological functional analysis revealed a set of crucial proteins involved in the differentiation of human corneal stromal cells which were found to be significantly enriched. The selected proteins were further validated by immunohistochemistry. Quantitative proteomics identified key differentially expressed proteins which are involved in cellular signaling pathways. Proteins involved in integrin signaling (Ras-RAP1b, TLN and FN) and SLIT-ROBO pathways (PFN1, CAPR1, PSMA5) as well as extracellular matrix proteins (SERPINH1, SPARC, ITGβ1, CRTAP) showed enhanced expression in corneal fibroblasts and myofibroblasts compared to keratocytes, indicating their possible role in wound healing. Corneal stromal cell differentiation is associated with the activation of diverse molecular pathways critical for the repair of fibroblasts and myofibroblasts. Identified proteins such as profilin 1 and talin could play a tentative role in corneal healing and serve as a potential target to treat corneal fibrosis.
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Affiliation(s)
- Krishnatej Nishtala
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
| | - Trailokyanath Panigrahi
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
| | - Rohit Shetty
- Cornea and Refractive Services, Narayana Nethralaya, Bangalore 560010, India; (R.S.); (P.K.)
| | - Dhanananajay Kumar
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
| | - Pooja Khamar
- Cornea and Refractive Services, Narayana Nethralaya, Bangalore 560010, India; (R.S.); (P.K.)
| | - Rajiv R. Mohan
- Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 65201, USA;
- Department of Veterinary Medicine & Surgery and Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65212, USA
- College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA
- Mason Eye Institute, School of Medicine, University of Missouri, Columbia, MO 65201, USA
| | - Vrushali Deshpande
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
- Correspondence: (V.D.); (A.G.)
| | - Arkasubhra Ghosh
- GROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore 560099, India; (K.N.); (T.P.); (D.K.)
- Correspondence: (V.D.); (A.G.)
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17
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Osteogenic Differentiation of Human Mesenchymal Stem Cells Modulated by Surface Manganese Chemistry in SLA Titanium Implants. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5339090. [PMID: 35071596 PMCID: PMC8776456 DOI: 10.1155/2022/5339090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 12/16/2021] [Indexed: 11/17/2022]
Abstract
The manganese (Mn) ion has recently been probed as a potential candidate element for the surface chemistry modification of titanium (Ti) implants in order to develop a more osteogenic surface with the expectation of taking advantage of its strong binding affinity to the integrins on bone-forming cells. However, the exact mechanism of how Mn enhances osteogenesis when introduced into the surface of Ti implants is not clearly understood. This study investigated the corrosion resistance and potential osteogenic capacity of a Mn-incorporated Ti surface as determined by electrochemical measurement and examining the behaviors of human mesenchymal stem cells (MSCs) in a clinically available sandblasted/acid-etched (SLA) oral implant surface intended for future biomedical applications. The surface that resulted from wet chemical treatment exhibited the formation of a Mn-containing nanostructured TiO2 anatase thin film in the SLA implant and improved corrosion resistance. The Mn-incorporated SLA surface displayed sustained Mn ion release and enhanced osteogenesis-related MSC function, which enhanced early cellular events such as spreading, focal adhesion, and mRNA expression of critical adhesion-related genes and promoted full human MSC differentiation into mature osteoblasts. Our findings indicate that surface Mn modification by wet chemical treatment is an effective approach to produce a Ti implant surface with increased osteogenic capacity through the promotion of the osteogenic differentiation of MSCs. The improved corrosion resistance of the resultant surface is yet another important benefit of being able to provide favorable osseointegration interface stability with an increased barrier effect.
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18
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Overexpression of Flii during Murine Embryonic Development Increases Symmetrical Division of Epidermal Progenitor Cells. Int J Mol Sci 2021; 22:ijms22158235. [PMID: 34361001 PMCID: PMC8348627 DOI: 10.3390/ijms22158235] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 01/24/2023] Open
Abstract
Epidermal progenitor cells divide symmetrically and asymmetrically to form stratified epidermis and hair follicles during late embryonic development. Flightless I (Flii), an actin remodelling protein, is implicated in Wnt/β-cat and integrin signalling pathways that govern cell division. This study investigated the effect of altering Flii on the divisional orientation of epidermal progenitor cells (EpSCs) in the basal layer during late murine embryonic development and early adolescence. The effect of altering Flii expression on asymmetric vs. symmetric division was assessed in vitro in adult human primary keratinocytes and in vivo at late embryonic development stages (E16, E17 and E19) as well as adolescence (P21 day-old) in mice with altered Flii expression (Flii knockdown: Flii+/−, wild type: WT, transgenic Flii overexpressing: FliiTg/Tg) using Western blot and immunohistochemistry. Flii+/− embryonic skin showed increased asymmetrical cell division of EpSCs with an increase in epidermal stratification and elevated talin, activated-Itgb1 and Par3 expression. FliiTg/Tg led to increased symmetrical cell division of EpSCs with increased cell proliferation rate, an elevated epidermal SOX9, Flap1 and β-cat expression, a thinner epidermis, but increased hair follicle number and depth. Flii promotes symmetric division of epidermal progenitor cells during murine embryonic development.
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19
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Eichinger JF, Grill MJ, Kermani ID, Aydin RC, Wall WA, Humphrey JD, Cyron CJ. A computational framework for modeling cell-matrix interactions in soft biological tissues. Biomech Model Mechanobiol 2021; 20:1851-1870. [PMID: 34173132 PMCID: PMC8450219 DOI: 10.1007/s10237-021-01480-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/08/2021] [Indexed: 01/10/2023]
Abstract
Living soft tissues appear to promote the development and maintenance of a preferred mechanical state within a defined tolerance around a so-called set point. This phenomenon is often referred to as mechanical homeostasis. In contradiction to the prominent role of mechanical homeostasis in various (patho)physiological processes, its underlying micromechanical mechanisms acting on the level of individual cells and fibers remain poorly understood, especially how these mechanisms on the microscale lead to what we macroscopically call mechanical homeostasis. Here, we present a novel computational framework based on the finite element method that is constructed bottom up, that is, it models key mechanobiological mechanisms such as actin cytoskeleton contraction and molecular clutch behavior of individual cells interacting with a reconstructed three-dimensional extracellular fiber matrix. The framework reproduces many experimental observations regarding mechanical homeostasis on short time scales (hours), in which the deposition and degradation of extracellular matrix can largely be neglected. This model can serve as a systematic tool for future in silico studies of the origin of the numerous still unexplained experimental observations about mechanical homeostasis.
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Affiliation(s)
- Jonas F Eichinger
- Institute for Computational Mechanics, Technical University of Munich, Garching, 85748, Germany.,Institute for Continuum and Materials Mechanics, Hamburg University of Technology, Hamburg, 21073, Germany
| | - Maximilian J Grill
- Institute for Computational Mechanics, Technical University of Munich, Garching, 85748, Germany
| | - Iman Davoodi Kermani
- Institute for Computational Mechanics, Technical University of Munich, Garching, 85748, Germany
| | - Roland C Aydin
- Institute of Material Systems Modeling, Helmholtz-Zentrum Hereon, Geesthacht, 21502, Germany
| | - Wolfgang A Wall
- Institute for Computational Mechanics, Technical University of Munich, Garching, 85748, Germany
| | - Jay D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, 06520, USA
| | - Christian J Cyron
- Institute for Continuum and Materials Mechanics, Hamburg University of Technology, Hamburg, 21073, Germany. .,Institute of Material Systems Modeling, Helmholtz-Zentrum Hereon, Geesthacht, 21502, Germany.
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20
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Mishra YG, Manavathi B. Focal adhesion dynamics in cellular function and disease. Cell Signal 2021; 85:110046. [PMID: 34004332 DOI: 10.1016/j.cellsig.2021.110046] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 05/13/2021] [Indexed: 02/06/2023]
Abstract
Acting as a bridge between the cytoskeleton of the cell and the extra cellular matrix (ECM), the cell-ECM adhesions with integrins at their core, play a major role in cell signalling to direct mechanotransduction, cell migration, cell cycle progression, proliferation, differentiation, growth and repair. Biochemically, these adhesions are composed of diverse, yet an organised group of structural proteins, receptors, adaptors, various enzymes including protein kinases, phosphatases, GTPases, proteases, etc. as well as scaffolding molecules. The major integrin adhesion complexes (IACs) characterised are focal adhesions (FAs), invadosomes (podosomes and invadopodia), hemidesmosomes (HDs) and reticular adhesions (RAs). The varied composition and regulation of the IACs and their signalling, apart from being an integral part of normal cell survival, has been shown to be of paramount importance in various developmental and pathological processes. This review per-illustrates the recent advancements in the research of IACs, their crucial roles in normal as well as diseased states. We have also touched on few of the various methods that have been developed over the years to visualise IACs, measure the forces they exert and study their signalling and molecular composition. Having such pertinent roles in the context of various pathologies, these IACs need to be understood and studied to develop therapeutical targets. We have given an update to the studies done in recent years and described various techniques which have been applied to study these structures, thereby, providing context in furthering research with respect to IAC targeted therapeutics.
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Affiliation(s)
- Yasaswi Gayatri Mishra
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India
| | - Bramanandam Manavathi
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India.
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21
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Exogenous Integrin αIIbβ3 Inhibitors Revisited: Past, Present and Future Applications. Int J Mol Sci 2021; 22:ijms22073366. [PMID: 33806083 PMCID: PMC8036306 DOI: 10.3390/ijms22073366] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 12/15/2022] Open
Abstract
The integrin αIIbβ3 is the most abundant integrin on platelets. Upon platelet activation, the integrin changes its conformation (inside-out signalling) and outside-in signalling takes place leading to platelet spreading, platelet aggregation and thrombus formation. Bloodsucking parasites such as mosquitoes, leeches and ticks express anticoagulant and antiplatelet proteins, which represent major sources of lead compounds for the development of useful therapeutic agents for the treatment of haemostatic disorders or cardiovascular diseases. In addition to hematophagous parasites, snakes also possess anticoagulant and antiplatelet proteins in their salivary glands. Two snake venom proteins have been developed into two antiplatelet drugs that are currently used in the clinic. The group of proteins discussed in this review are disintegrins, low molecular weight integrin-binding cysteine-rich proteins, found in snakes, ticks, leeches, worms and horseflies. Finally, we highlight various oral antagonists, which have been tested in clinical trials but were discontinued due to an increase in mortality. No new αIIbβ3 inhibitors are developed since the approval of current platelet antagonists, and structure-function analysis of exogenous disintegrins could help find platelet antagonists with fewer adverse side effects.
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22
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Jaiswal D, Sidharthan VK, Sharma SK, Rai R, Choudhary N, Ghosh A, Baranwal VK. Candidatus Liberibacter asiaticus manipulates the expression of vitellogenin, cytoskeleton, and endocytotic pathway-related genes to become circulative in its vector, Diaphorina citri (Hemiptera: Psyllidae). 3 Biotech 2021; 11:88. [PMID: 33520575 DOI: 10.1007/s13205-021-02641-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/03/2021] [Indexed: 11/30/2022] Open
Abstract
Citrus greening disease or huanglongbing (HLB) caused by Candidatus Liberibacter asiaticus (CLas) limits citrus production worldwide. CLas is transmitted by the Asian citrus psyllid (ACP), Diaphorina citri (Hemiptera: Psyllidae) in a persistent-propagative manner. Understanding the molecular interaction between CLas and ACP and interrupting the interrelationship can provide an alternative to insecticides for managing citrus greening disease. Transcriptome analysis of ACP in response to CLas showed differential expression of 3911 genes (2196 upregulated, and 1715 downregulated) including the key genes of ACP involved in cytoskeleton synthesis and nutrition-related proteins, such as vitellogenins, extensin, laminin, tropomyosin, troponin C, and flightin. Majority of the differentially expressed genes were categorized under molecular functions followed by cellular components and biological processes. KEGG pathway analysis showed differential regulation of carbohydrate, nucleotide, and energy metabolic pathways, the endocytotic pathway, and the defense-related pathways. Differential regulation of genes associated with the key pathways might favour CLas to become systemic and propagate in its insect vector. The study provides an understanding of genes involved in circulation of CLas in ACP. The candidate genes involved in key physiological processes and CLas transmission by ACP would be potential targets for sustainable management of ACP and CLas. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02641-x.
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Affiliation(s)
- Damini Jaiswal
- Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - V Kavi Sidharthan
- Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | | | - Richa Rai
- Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Nandlal Choudhary
- Amity Institute of Virology and Immunology, Amity University, Sector-125, Noida, 201313 India
| | - Amalendu Ghosh
- Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Virendra Kumar Baranwal
- Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
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23
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Ibata N, Terentjev EM. Development of Nascent Focal Adhesions in Spreading Cells. Biophys J 2020; 119:2063-2073. [PMID: 33068539 DOI: 10.1016/j.bpj.2020.09.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 08/11/2020] [Accepted: 09/21/2020] [Indexed: 12/31/2022] Open
Abstract
The eukaryotic cell develops organelles to sense and respond to the mechanical properties of its surroundings. These mechanosensing organelles aggregate into symmetry-breaking patterns to mediate cell motion and differentiation on substrate. The spreading of a cell plated onto a substrate is one of the simplest paradigms in which angular symmetry-breaking assemblies of mechanical sensors are seen to develop. We review evidence for the importance of the edge of the cell-extracellular matrix adhesion area in the aggregation of mechanosensors and develop a theoretical model for the clustering of mechanosensors into nascent focal adhesions on this contact ring. To study the spatial patterns arising on this topological feature, we use a one-dimensional lattice model with a nearest-neighbor interaction between individual integrin-mediated mechanosensors. We find the effective Ginzburg-Landau free energy for this model and determine the spectrum of spatial modes as the cell spreads and increases its contact area with the substrate. To test our model, we compare its predictions with measured distributions of paxillin in spreading fibroblasts.
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Affiliation(s)
- Neil Ibata
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, United Kingdom
| | - Eugene M Terentjev
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, United Kingdom.
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Review of PIP2 in Cellular Signaling, Functions and Diseases. Int J Mol Sci 2020; 21:ijms21218342. [PMID: 33172190 PMCID: PMC7664428 DOI: 10.3390/ijms21218342] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 12/27/2022] Open
Abstract
Phosphoinositides play a crucial role in regulating many cellular functions, such as actin dynamics, signaling, intracellular trafficking, membrane dynamics, and cell-matrix adhesion. Central to this process is phosphatidylinositol bisphosphate (PIP2). The levels of PIP2 in the membrane are rapidly altered by the activity of phosphoinositide-directed kinases and phosphatases, and it binds to dozens of different intracellular proteins. Despite the vast literature dedicated to understanding the regulation of PIP2 in cells over past 30 years, much remains to be learned about its cellular functions. In this review, we focus on past and recent exciting results on different molecular mechanisms that regulate cellular functions by binding of specific proteins to PIP2 or by stabilizing phosphoinositide pools in different cellular compartments. Moreover, this review summarizes recent findings that implicate dysregulation of PIP2 in many diseases.
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Low expression of Talin1 is associated with advanced pathological features in colorectal cancer patients. Sci Rep 2020; 10:17786. [PMID: 33082414 PMCID: PMC7576823 DOI: 10.1038/s41598-020-74810-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022] Open
Abstract
To explore the proper prognostic markers for the likelihood of metastasis in CRC patients. Seventy-seven fresh CRC samples were collected to evaluate the mRNA level of the selected marker using Real-time PCR. Moreover, 648 formalin-fixed paraffin-embedded CRC tissues were gathered to evaluate protein expression by immunohistochemistry (IHC) on tissue microarrays. The results of Real-Time PCR showed that low expression of Talin1 was significantly associated with advanced TNM stage (p = 0.034) as well as gender (p = 0.029) in mRNA levels. Similarly, IHC results indicated that a low level of cytoplasmic expression of Talin1 was significantly associated with advanced TNM stage (p = 0.028) as well as gender (p = 0.009) in CRC patients. Moreover, decreased expression of cytoplasmic Talin1 protein was found to be a significant predictor of worse disease-specific survival (DSS) (p = 0.011) in the univariate analysis. In addition, a significant difference was achieved (p = 0.039) in 5-year survival rates of DSS: 65% for low, 72% for moderate, and 88% for high Talin1 protein expression. Observations showed that lower expression of Talin1 at both the gene and protein level may drive the disparity of CRC patients’ outcomes via worse DSS and provide new insights into the development of progression indicators because of its correlation with increased tumor aggressiveness.
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High Plasma Levels of Soluble Talin-1 in Patients with Coronary Artery Disease. DISEASE MARKERS 2020; 2020:2479830. [PMID: 32566035 PMCID: PMC7275969 DOI: 10.1155/2020/2479830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 05/17/2020] [Accepted: 05/21/2020] [Indexed: 01/25/2023]
Abstract
Aims Talin-1 is a cytoskeletal protein that binds integrin, thereby leading to integrin activation and affecting focal adhesions. Recently, talin-1 expression was reported to be downregulated in human atherosclerotic plaques. However, blood levels of soluble talin-1 (sTalin-1) in patients with atherosclerotic disease, such as coronary artery disease (CAD), have not been elucidated. Methods We measured plasma sTalin-1 levels in 349 patients undergoing elective coronary angiography. The severity of CAD was represented as the number of stenotic coronary vessels and segments. Results Of the 349 study patients, CAD was found in 194 patients, of whom 88 had 1-vessel disease (1-VD), 60 had 2-vessel disease (2-VD), and 46 had 3-vessel disease (3-VD). Plasma sTalin-1 levels were higher in 194 patients with CAD than in 155 without CAD (CAD(-) group) (median 0.30 vs. 0.23 ng/mL, P < 0.005). A stepwise increase in sTalin-1 levels was found depending on the number of >50% stenotic coronary vessels: 0.23 in CAD(-), 0.29 in 1-VD, 0.30 in 2-VD, and 0.32 ng/mL in 3-VD group, respectively, (P < 0.05). High sTalin-1 level (>0.28 ng/mL) was found in 36% of CAD(-), 51% of 1-VD, 53% of 2-VD, and 59% of 3-VD group (P < 0.025). sTalin-1 levels also correlated with the number of >50% stenotic segments (r = 0.14, P < 0.02). The multivariate analysis revealed that sTalin-1 levels were independently associated with CAD. The odds ratio for CAD was 1.83 (95%CI = 1.14 - 2.93) for high sTalin-1 level (>0.28 ng/mL) (P < 0.02). Conclusions Plasma sTalin-1 levels in patients with CAD were found to be high and to be associated with the presence and severity of CAD, suggesting a role of sTalin-1 in the progression of coronary atherosclerosis.
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Jammrath J, Reim I, Saumweber H. Cbl-Associated Protein CAP contributes to correct formation and robust function of the Drosophila heart tube. PLoS One 2020; 15:e0233719. [PMID: 32469960 PMCID: PMC7259718 DOI: 10.1371/journal.pone.0233719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 05/11/2020] [Indexed: 01/08/2023] Open
Abstract
The formation of a tube-like structure is a basic step in the making of functional hearts in vertebrates and invertebrates and therefore, its understanding provides important information on heart development and function. In Drosophila, the cardiac tube originates from two bilateral rows of dorsally migrating cells. On meeting at the dorsal midline, coordinated changes in cell shape and adhesive properties transform the two sheets of cells into a linear tube. ECM and transmembrane proteins linked to the cytoskeleton play an important role during these dynamic processes. Here we characterize the requirement of Cbl-Associated Protein (CAP) in Drosophila heart formation. In embryos, CAP is expressed in late migrating cardioblasts and is located preferentially at their luminal and abluminal periphery. CAP mutations result in irregular cardioblast alignment and imprecisely controlled cardioblast numbers. Furthermore, CAP mutant embryos show a strongly reduced heart lumen and an aberrant shape of lumen forming cardioblasts. Analysis of double heterozygous animals reveals a genetic interaction of CAP with Integrin- and Talin-encoding genes. In post-embryonic stages, CAP closely colocalizes with Integrin near Z-bands and at cell-cell contact sites. CAP mutants exhibit a reduced contractility in larval hearts and show a locally disrupted morphology, which correlates with a reduced pumping efficiency. Our observations imply a function of CAP in linking Integrin signaling with the actin cytoskeleton. As a modulator of the cytoskeleton, CAP is involved in the establishment of proper cell shapes during cardioblast alignment and cardiac lumen formation in the Drosophila embryo. Furthermore, CAP is required for correct heart function throughout development.
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Affiliation(s)
- Jennifer Jammrath
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Division of Cytogenetics, Institute of Biology, Humboldt University Berlin, Berlin, Germany
| | - Ingolf Reim
- Division of Developmental Biology, Department of Biology, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
- Muscle Research Center Erlangen (MURCE), Erlangen, Germany
| | - Harald Saumweber
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Division of Cytogenetics, Institute of Biology, Humboldt University Berlin, Berlin, Germany
- * E-mail:
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Bürgi J, Abrami L, Castanon I, Abriata LA, Kunz B, Yan SE, Lera M, Unger S, Superti-Furga A, Peraro MD, Gaitan MG, van der Goot FG. Ligand Binding to the Collagen VI Receptor Triggers a Talin-to-RhoA Switch that Regulates Receptor Endocytosis. Dev Cell 2020; 53:418-430.e4. [PMID: 32428455 DOI: 10.1016/j.devcel.2020.04.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 01/23/2020] [Accepted: 04/21/2020] [Indexed: 11/23/2022]
Abstract
Capillary morphogenesis gene 2 (CMG2/ANTXR2) is a cell surface receptor for both collagen VI and anthrax toxin. Biallelic loss-of-function mutations in CMG2 lead to a severe condition, hyaline fibromatosis syndrome (HFS). We have here dissected a network of dynamic interactions between CMG2 and various actin interactors and regulators, describing a different behavior from other extracellular matrix receptors. CMG2 binds talin, and thereby the actin cytoskeleton, only in its ligand-free state. Extracellular ligand binding leads to src-dependent talin release and recruitment of the actin cytoskeleton regulator RhoA and its effectors. These sequential interactions of CMG2 are necessary for the control of oriented cell division during fish development. Finally, we demonstrate that effective switching between talin and RhoA binding is required for the intracellular degradation of collagen VI in human fibroblasts, which explains why HFS mutations in the cytoskeleton-binding domain lead to dysregulation of extracellular matrix homeostasis.
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Affiliation(s)
- Jérôme Bürgi
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; EMBL Hamburg DESY, 22607 Hamburg, Germany
| | - Laurence Abrami
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Irinka Castanon
- Departments of Biochemistry and of Molecular Biology, Sciences II, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Luciano Andres Abriata
- Faculty of Life Sciences, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Beatrice Kunz
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Shixu Emili Yan
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Manuel Lera
- Departments of Biochemistry and of Molecular Biology, Sciences II, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Sheila Unger
- Division of Genetic Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, 1011 Lausanne, Switzerland
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, 1011 Lausanne, Switzerland
| | - Matteo Dal Peraro
- Faculty of Life Sciences, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Marcos Gonzalez Gaitan
- Departments of Biochemistry and of Molecular Biology, Sciences II, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Francoise Gisou van der Goot
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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Mohamed AA, El-Toukhy N, Ghaith DM, Badawy I, Abdo SM, Elkadeem M, Mahrous MN, Abd-Elsalam S. Talin-1 Gene Expression as a Tumor Marker in Hepatocellular Carcinoma Patients: A Pilot Study. ACTA ACUST UNITED AC 2020. [DOI: 10.2174/1875318302010010015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background & Aims:
Hepatocellular Carcinoma (HCC) is the most common primary liver tumor. It is the second most common cancer in men and the sixth in women in Egypt. One of the proteins participating in the trans-endothelial migration is Talin-1. It also has a role in the formation and metastasis of different types of cancer. This study aimed to evaluate the diagnostic impact of Talin-1 gene expression in HCC Egyptian patients.
Methods:
Our study included forty HCC patients, thirty liver cirrhosis patients without HCC and thirty healthy subjects. For all groups, clinical and biochemical parameters were investigated. Tumor characteristics were assessed and tumor staging was done using Okuda, CLIP, VISUM and Tokyo staging systems. In addition, Serum Alpha-Fetoprotein (AFP) levels were assayed using Enzyme Immunoassay (EIA) and Talin-1 gene expression was assessed in the Peripheral Blood Mononuclear Cells (PBMCs) via quantitative real-time Polymerase Chain Reaction (PCR).
Results:
Talin-1 gene expression was significantly upregulated in HCC patients in comparison to cirrhotic and control subjects. The Receiver Operating Characteristic (ROC) analysis indicated that Talin-1 gene expression surpasses serum levels of AFP in the diagnosis of HCC. In particular, the cut off value of 9.5 (2-∆∆Ct) recorded an AUC of 85.7% with a sensitivity of 93.3% and specificity of 80%.
Conclusion:
Our data confirmed an évident diagnostic role of Talin-1 gene expression for HCC detection.
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Ward M, Iskratsch T. Mix and (mis-)match - The mechanosensing machinery in the changing environment of the developing, healthy adult and diseased heart. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2020; 1867:118436. [PMID: 30742931 PMCID: PMC7042712 DOI: 10.1016/j.bbamcr.2019.01.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/07/2019] [Accepted: 01/29/2019] [Indexed: 01/01/2023]
Abstract
The composition and the stiffness of cardiac microenvironment change during development and/or in heart disease. Cardiomyocytes (CMs) and their progenitors sense these changes, which decides over the cell fate and can trigger CM (progenitor) proliferation, differentiation, de-differentiation or death. The field of mechanobiology has seen a constant increase in output that also includes a wealth of new studies specific to cardiac or cardiomyocyte mechanosensing. As a result, mechanosensing and transduction in the heart is increasingly being recognised as a main driver of regulating the heart formation and function. Recent work has for instance focused on measuring the molecular, physical and mechanical changes of the cellular environment - as well as intracellular contributors to the passive stiffness of the heart. On the other hand, a variety of new studies shed light into the molecular machinery that allow the cardiomyocytes to sense these properties. Here we want to discuss the recent work on this topic, but also specifically focus on how the different components are regulated at various stages during development, in health or disease in order to highlight changes that might contribute to disease progression and heart failure.
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Key Words
- cm, cardiomyocytes
- hcm, hypertrophic cardiomyopathy
- dcm, dilated cardiomyopathy
- icm, idiopathic cardiomyopathy
- myh, myosin heavy chain
- tnnt, troponin t
- tnni, troponin i
- afm, atomic force microscope
- mre, magnetic resonance elastography
- swe, ultrasound cardiac shear-wave elastography
- lv, left ventricle
- lox, lysyl oxidase
- loxl, lysyl oxidase like protein
- lh, lysyl hydroxylase
- lys, lysin
- lccs, lysald-derived collagen crosslinks
- hlccs, hylald-derived collagen crosslinks
- pka, protein kinase a
- pkc, protein kinase c
- vash1, vasohibin-1
- svbp, small vasohibin binding protein
- tcp, tubulin carboxypeptidase
- ttl, tubulin tyrosine ligase
- mrtf, myocardin-related transcription factor
- gap, gtpase activating protein
- gef, guanine nucleotide exchange factor
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Affiliation(s)
- Matthew Ward
- Division of Bioengineering, School of Engineering and Materials Science & Institute for Bioengineering, Queen Mary University of London, United Kingdom
| | - Thomas Iskratsch
- Division of Bioengineering, School of Engineering and Materials Science & Institute for Bioengineering, Queen Mary University of London, United Kingdom.
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Tendon and ligament mechanical loading in the pathogenesis of inflammatory arthritis. Nat Rev Rheumatol 2020; 16:193-207. [PMID: 32080619 DOI: 10.1038/s41584-019-0364-x] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2019] [Indexed: 12/18/2022]
Abstract
Mechanical loading is an important factor in musculoskeletal health and disease. Tendons and ligaments require physiological levels of mechanical loading to develop and maintain their tissue architecture, a process that is achieved at the cellular level through mechanotransduction-mediated fine tuning of the extracellular matrix by tendon and ligament stromal cells. Pathological levels of force represent a biological (mechanical) stress that elicits an immune system-mediated tissue repair pathway in tendons and ligaments. The biomechanics and mechanobiology of tendons and ligaments form the basis for understanding how such tissues sense and respond to mechanical force, and the anatomical extent of several mechanical stress-related disorders in tendons and ligaments overlaps with that of chronic inflammatory arthritis in joints. The role of mechanical stress in 'overuse' injuries, such as tendinopathy, has long been known, but mechanical stress is now also emerging as a possible trigger for some forms of chronic inflammatory arthritis, including spondyloarthritis and rheumatoid arthritis. Thus, seemingly diverse diseases of the musculoskeletal system might have similar mechanisms of immunopathogenesis owing to conserved responses to mechanical stress.
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The Extracellular Matrix: An Accomplice in Gastric Cancer Development and Progression. Cells 2020; 9:cells9020394. [PMID: 32046329 PMCID: PMC7072625 DOI: 10.3390/cells9020394] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/03/2020] [Accepted: 02/06/2020] [Indexed: 02/07/2023] Open
Abstract
The extracellular matrix (ECM) is a dynamic and highly organized tissue structure, providing support and maintaining normal epithelial architecture. In the last decade, increasing evidence has emerged demonstrating that alterations in ECM composition and assembly strongly affect cellular function and behavior. Even though the detailed mechanisms underlying cell-ECM crosstalk are yet to unravel, it is well established that ECM deregulation accompanies the development of many pathological conditions, such as gastric cancer. Notably, gastric cancer remains a worldwide concern, representing the third most frequent cause of cancer-associated deaths. Despite increased surveillance protocols, patients are usually diagnosed at advanced disease stages, urging the identification of novel diagnostic biomarkers and efficient therapeutic strategies. In this review, we provide a comprehensive overview regarding expression patterns of ECM components and cognate receptors described in normal gastric epithelium, pre-malignant lesions, and gastric carcinomas. Important insights are also discussed for the use of ECM-associated molecules as predictive biomarkers of the disease or as potential targets in gastric cancer.
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D'Occhio MJ, Campanile G, Zicarelli L, Visintin JA, Baruselli PS. Adhesion molecules in gamete transport, fertilization, early embryonic development, and implantation-role in establishing a pregnancy in cattle: A review. Mol Reprod Dev 2020; 87:206-222. [PMID: 31944459 DOI: 10.1002/mrd.23312] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 12/19/2019] [Indexed: 12/11/2022]
Abstract
Cell-cell adhesion molecules have critically important roles in the early events of reproduction including gamete transport, sperm-oocyte interaction, embryonic development, and implantation. Major adhesion molecules involved in reproduction include cadherins, integrins, and disintegrin and metalloprotease domain-containing (ADAM) proteins. ADAMs on the surface of sperm adhere to integrins on the oocyte in the initial stages of sperm-oocyte interaction and fusion. Cadherins act in early embryos to organize the inner cell mass and trophectoderm. The trophoblast and uterine endometrial epithelium variously express cadherins, integrins, trophinin, and selectin, which achieve apposition and attachment between the elongating conceptus and uterine epithelium before implantation. An overview of the major cell-cell adhesion molecules is presented and this is followed by examples of how adhesion molecules help shape early reproductive events. The argument is made that a deeper understanding of adhesion molecules and reproduction will inform new strategies that improve embryo survival and increase the efficiency of natural mating and assisted breeding in cattle.
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Affiliation(s)
- Michael J D'Occhio
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
| | - Giuseppe Campanile
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Luigi Zicarelli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - José A Visintin
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Pietro S Baruselli
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
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Abstract
Stem cells can be conceptualized as computational processors capable of sensing, processing, and converting environmental information (input) to yield a specific differentiation pathway (output). In this study, we employ a temperature-controlled polymer sheet actuator to interpret and transfer information, controlled by the material’s programming, to mesenchymal stem cells. The cell’s interpretation of mechanical, thermal, and biochemical signaling is shown to be dependent on the actuator’s activity, utilized to accelerate differentiation toward bone cells, further elucidating the role of microenvironmental parameters on mammalian cells. Our method provides a unique approach to processing two discrete stimuli into one biochemical signal, calcium ions, providing a basis for the logical control of the flow of biological signals and the design of cellular functions. Stem cells are capable of sensing and processing environmental inputs, converting this information to output a specific cell lineage through signaling cascades. Despite the combinatorial nature of mechanical, thermal, and biochemical signals, these stimuli have typically been decoupled and applied independently, requiring continuous regulation by controlling units. We employ a programmable polymer actuator sheet to autonomously synchronize thermal and mechanical signals applied to mesenchymal stem cells (MSCs). Using a grid on its underside, the shape change of polymer sheet, as well as cell morphology, calcium (Ca2+) influx, and focal adhesion assembly, could be visualized and quantified. This paper gives compelling evidence that the temperature sensing and mechanosensing of MSCs are interconnected via intracellular Ca2+. Up-regulated Ca2+ levels lead to a remarkable alteration of histone H3K9 acetylation and activation of osteogenic related genes. The interplay of physical, thermal, and biochemical signaling was utilized to accelerate the cell differentiation toward osteogenic lineage. The approach of programmable bioinstructivity provides a fundamental principle for functional biomaterials exhibiting multifaceted stimuli on differentiation programs. Technological impact is expected in the tissue engineering of periosteum for treating bone defects.
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Ji L, Jiang F, Cui X, Qin C. Talin1 knockdown prohibits the proliferation and migration of colorectal cancer cells via the EMT signaling pathway. Oncol Lett 2019; 18:5408-5416. [PMID: 31612049 PMCID: PMC6781565 DOI: 10.3892/ol.2019.10902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 08/06/2019] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) is the third most commonly diagnosed cancer and the second highest cause of cancer-associated death worldwide. Talin1 activates integrins, which mediate cell adhesion, proliferation, tumorigenesis and metastasis. The aim of the present study was to determine talin1 expression levels in colorectal cancer (CRC) and investigate the role of talin1 in CRC proliferation and invasion in vitro and in vivo. Talin1 protein expression levels were detected in human CRC and adjacent normal tissues by immunohistochemistry. Talin1 short hairpin RNA and control vectors were designed and stably transfected into HCT116 CRC cells. Cell proliferation was determined by MTT assay. Cell migratory and invasive capabilities were detected by wound-healing and Matrigel invasion assays. The expression of proteins in the epithelial-to-mesenchymal transition signaling pathway was determined by western blotting and reverse transcription-quantitative PCR. The effect of talin1 on tumor growth was explored in vivo using BALB/c nude mice. Immunohistochemical analysis of CRC and adjacent normal tissue revealed that talin1 expression was upregulated in CRC. Talin1 knockdown significantly reduced the proliferation, migration and invasive ability of HCT116 cells compared with the control. Protein levels of phosphorylated STAT3 and vimentin were significantly lower in talin1-knockdown HCT116 cell lines compared with the control, whereas protein levels of E-cadherin were increased. Interleukin-6 mRNA levels were significantly increased in patients' blood samples compared with blood samples from healthy controls, as well as in CRC compared with adjacent normal tissue. In vivo experiments demonstrated that talin1 knockdown reduced CRC tumor growth and weight in nude mice. In conclusion, Talin1 knockdown may prevent the proliferation and migration of CRC cells by downregulating various factors involved in the epithelial-to-mesenchymal transition process, such as phosphorylated STAT3 and vimentin; therefore, talin1 may provide a novel therapeutic target for CRC.
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Affiliation(s)
- Ling Ji
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China.,Department of Colorectal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Feizhao Jiang
- Department of Colorectal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xianping Cui
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Chengkun Qin
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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Gao J, Bao Y, Ge S, Sun P, Sun J, Liu J, Chen F, Han L, Cao Z, Qin J, White GC, Xu Z, Ma YQ. Sharpin suppresses β1-integrin activation by complexing with the β1 tail and kindlin-1. Cell Commun Signal 2019; 17:101. [PMID: 31429758 PMCID: PMC6700787 DOI: 10.1186/s12964-019-0407-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 07/28/2019] [Indexed: 12/30/2022] Open
Abstract
Background Previously sharpin has been identified as an endogenous inhibitor of β1-integrin activation by directly binding to a conserved region in the cytoplasmic tails (CTs) of the integrin β1-associated α subunits. Methods Here we employed biochemical approaches and cellular analyses to evaluate the function and molecular mechanism of the sharpin-kindlin-1 complex in regulating β1-integrin activation. Results In this study, we found that although the inhibition of sharpin on β1-integrin activation could be confirmed, sharpin had no apparent effect on integrin αIIbβ3 activation in CHO cell system. Notably, a direct interaction between sharpin and the integrin β1 CT was detected, while the interaction of sharpin with the integrin αIIb and the β3 CTs were substantially weaker. Importantly, sharpin was able to inhibit the talin head domain binding to the integrin β1 CT, which can mechanistically contribute to inhibiting β1-integrin activation. Interestingly, we also found that sharpin interacted with kindlin-1, and the interaction between sharpin and the integrin β1 CT was significantly enhanced when kindlin-1 was present. Consistently, we observed that instead of acting as an activator, kindlin-1 actually suppressed the talin head domain mediated β1-integrin activation, indicating that kindlin-1 may facilitate recruitment of sharpin to the integrin β1 CT. Conclusion Taken together, our findings suggest that sharpin may complex with both kindlin-1 and the integrin β1 CT to restrict the talin head domain binding, thus inhibiting β1-integrin activation.
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Affiliation(s)
- Juan Gao
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Yun Bao
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Shushu Ge
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Peisen Sun
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Jiaojiao Sun
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Jianmin Liu
- Department of Molecular Cardiology, Lerner Research Institute Cleveland Clinic, Cleveland, OH, USA
| | - Feng Chen
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Li Han
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Zhongyuan Cao
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Jun Qin
- Department of Molecular Cardiology, Lerner Research Institute Cleveland Clinic, Cleveland, OH, USA
| | - Gilbert C White
- Blood Research Institute, Versiti, 8727 Watertown Plank Road, Milwaukee, WI, 53226, USA.,Department of Biochemistry, Medical College of Milwaukee, Milwaukee, WI, USA
| | - Zhen Xu
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China. .,Blood Research Institute, Versiti, 8727 Watertown Plank Road, Milwaukee, WI, 53226, USA.
| | - Yan-Qing Ma
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China. .,Blood Research Institute, Versiti, 8727 Watertown Plank Road, Milwaukee, WI, 53226, USA. .,Department of Biochemistry, Medical College of Milwaukee, Milwaukee, WI, USA.
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Real Microgravity Influences the Cytoskeleton and Focal Adhesions in Human Breast Cancer Cells. Int J Mol Sci 2019; 20:ijms20133156. [PMID: 31261642 PMCID: PMC6651518 DOI: 10.3390/ijms20133156] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/26/2019] [Accepted: 06/26/2019] [Indexed: 12/24/2022] Open
Abstract
With the increasing number of spaceflights, it is crucial to understand the changes occurring in human cells exposed to real microgravity (r-µg) conditions. We tested the effect of r-µg on MCF-7 breast cancer cells with the objective to investigate cytoskeletal alterations and early changes in the gene expression of factors belonging to the cytoskeleton, extracellular matrix, focal adhesion, and cytokines. In the Technische Experimente unter Schwerelosigkeit (TEXUS) 54 rocket mission, we had the opportunity to conduct our experiment during 6 min of r-µg and focused on cytoskeletal alterations of MCF-7 breast cancer cells expressing the Lifeact-GFP marker protein for the visualization of F-actin as well as the mCherry-tubulin fusion protein using the Fluorescence Microscopy Analysis System (FLUMIAS) for fast live-cell imaging under r-µg. Moreover, in a second mission we investigated changes in RNA transcription and morphology in breast cancer cells exposed to parabolic flight (PF) maneuvers (31st Deutsches Zentrum für Luft- und Raumfahrt (DLR) PF campaign). The MCF-7 cells showed a rearrangement of the F-actin and tubulin with holes, accumulations in the tubulin network, and the appearance of filopodia- and lamellipodia-like structures in the F-actin cytoskeleton shortly after the beginning of the r-µg period. PF maneuvers induced an early up-regulation of KRT8, RDX, TIMP1, CXCL8 mRNAs, and a down-regulation of VCL after the first parabola. E-cadherin protein was significantly reduced and is involved in cell adhesion processes, and plays a significant role in tumorigenesis. Changes in the E-cadherin protein synthesis can lead to tumor progression. Pathway analyses indicate that VCL protein has an activating effect on CDH1. In conclusion, live-cell imaging visualized similar changes as those occurring in thyroid cancer cells in r-µg. This result indicates the presence of a common mechanism of gravity perception and sensation.
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Wei X, Sun Y, Han T, Zhu J, Xie Y, Wang S, Wu Y, Fan Y, Sun X, Zhou J, Zhao Z, Jing Z. Upregulation of miR-330-5p is associated with carotid plaque's stability by targeting Talin-1 in symptomatic carotid stenosis patients. BMC Cardiovasc Disord 2019; 19:149. [PMID: 31215474 PMCID: PMC6582585 DOI: 10.1186/s12872-019-1120-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/27/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate the relationship between Talin-1 and stability of carotid atherosclerosis plaque and also find out the role of miRNA, as an upstream regulator, in regulating the expression level of Talin-1. METHODS Human carotid plaques were obtained from 20 symptomatic carotid stenosis patients who underwent carotid endarterectomy (CEA) in our hospital between October 2014 and August 2017. Western blot analysis and immunohistochemistry was carried out to detect the distribution and expression level of Talin-1 in each plaque sample. The content of miRNAs in carotid plaque was decected by quantitative reverse transcription polymerase chain reaction (RT-qPCR), and the relative expression levels were calculated by 2-△△Ct method after the (cycle threshold) Ct value (power amplification knee point) was obtained. Dual-luciferase reporter assays were applied to verify the successful transfections. Finally, we compared all the groups with independent-samples t-test and one-way analysis of variance (ANOVA). RESULTS Talin-1 was significantly downregulated in human unstable carotid plaque samples compared with stable carotid plaques (P < 0.05), and the distribution of Talin-1 was mainly found in the fibrous cap of carotid plaque. The overexpression of miRNA-330-5p was found in unstable carotid plaque, which significantly induced the inhibition of expression level of Talin-1. CONCLUSION Upregulated miR-330-5p may lead to unstable carotid plaques by targeting Talin-1 in symptomatic carotid stenosis patients. This might be a new target for the treatment of atherosclerotic diseases through future studies.
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Affiliation(s)
- Xiaolong Wei
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China
| | - Yudong Sun
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China.,Depaertment of general surgery, Nanjing General Hospital of Eastern Theater Command, Nanjing, China
| | - Tonglei Han
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China
| | - Jiang Zhu
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China
| | - Yongfu Xie
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China
| | - Shiying Wang
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China
| | - Yani Wu
- Department of Breast and Thyroid Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yinxing Fan
- Zhenjiang Medical District, General Hospital of Eastern Theater Command, Zhenjiang, China
| | - Xiuli Sun
- Department of ophthalmology, Jinan aier eye hospital, Jinan, China
| | - Jian Zhou
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China.
| | - Zhiqing Zhao
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China.
| | - Zaiping Jing
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China.
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Bayer SV, Grither WR, Brenot A, Hwang PY, Barcus CE, Ernst M, Pence P, Walter C, Pathak A, Longmore GD. DDR2 controls breast tumor stiffness and metastasis by regulating integrin mediated mechanotransduction in CAFs. eLife 2019; 8:45508. [PMID: 31144616 PMCID: PMC6555593 DOI: 10.7554/elife.45508] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 05/29/2019] [Indexed: 12/17/2022] Open
Abstract
Biomechanical changes in the tumor microenvironment influence tumor progression and metastases. Collagen content and fiber organization within the tumor stroma are major contributors to biomechanical changes (e., tumor stiffness) and correlated with tumor aggressiveness and outcome. What signals and in what cells control collagen organization within the tumors, and how, is not fully understood. We show in mouse breast tumors that the action of the collagen receptor DDR2 in CAFs controls tumor stiffness by reorganizing collagen fibers specifically at the tumor-stromal boundary. These changes were associated with lung metastases. The action of DDR2 in mouse and human CAFs, and tumors in vivo, was found to influence mechanotransduction by controlling full collagen-binding integrin activation via Rap1-mediated Talin1 and Kindlin2 recruitment. The action of DDR2 in tumor CAFs is thus critical for remodeling collagen fibers at the tumor-stromal boundary to generate a physically permissive tumor microenvironment for tumor cell invasion and metastases.
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Affiliation(s)
- Samantha Vh Bayer
- ICCE Institute, Washington University, St Louis, United States.,Department of Cell Biology and Physiology, Washington University, St Louis, United States.,Department of Medicine, Washington University, St Louis, United States
| | - Whitney R Grither
- ICCE Institute, Washington University, St Louis, United States.,Department of Medicine, Washington University, St Louis, United States.,Department of Biochemistry, Washington University, St Louis, United States
| | - Audrey Brenot
- ICCE Institute, Washington University, St Louis, United States.,Department of Medicine, Washington University, St Louis, United States
| | - Priscilla Y Hwang
- ICCE Institute, Washington University, St Louis, United States.,Department of Medicine, Washington University, St Louis, United States
| | - Craig E Barcus
- ICCE Institute, Washington University, St Louis, United States.,Department of Medicine, Washington University, St Louis, United States
| | - Melanie Ernst
- ICCE Institute, Washington University, St Louis, United States.,Department of Biochemistry, Washington University, St Louis, United States
| | - Patrick Pence
- ICCE Institute, Washington University, St Louis, United States
| | - Christopher Walter
- Department of Mechanical Engineering, Washington University, St Louis, United States
| | - Amit Pathak
- Department of Mechanical Engineering, Washington University, St Louis, United States
| | - Gregory D Longmore
- ICCE Institute, Washington University, St Louis, United States.,Department of Cell Biology and Physiology, Washington University, St Louis, United States.,Department of Medicine, Washington University, St Louis, United States
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Deb B, Puttamallesh VN, Gondkar K, Thiery JP, Gowda H, Kumar P. Phosphoproteomic Profiling Identifies Aberrant Activation of Integrin Signaling in Aggressive Non-Type Bladder Carcinoma. J Clin Med 2019; 8:E703. [PMID: 31108958 PMCID: PMC6572125 DOI: 10.3390/jcm8050703] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/22/2019] [Accepted: 04/23/2019] [Indexed: 12/16/2022] Open
Abstract
Bladder carcinoma is highly heterogeneous and its complex molecular landscape; thus, poses a significant challenge for resolving an effective treatment in metastatic tumors. We computed the epithelial-mesenchymal transition (EMT) scores of three bladder carcinoma subtypes-luminal, basal, and non-type. The EMT score of the non-type indicated a "mesenchymal-like" phenotype, which correlates with a relatively more aggressive form of carcinoma, typified by an increased migration and invasion. To identify the altered signaling pathways potentially regulating this EMT phenotype in bladder cancer cell lines, we utilized liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based phosphoproteomic approach. Bioinformatics analyses were carried out to determine the activated pathways, networks, and functions in bladder carcinoma cell lines. A total of 3125 proteins were identified, with 289 signature proteins noted to be differentially phosphorylated (p ≤ 0.05) in the non-type cell lines. The integrin pathway was significantly enriched and five major proteins (TLN1, CTTN, CRKL, ZYX and BCAR3) regulating cell motility and invasion were hyperphosphorylated. Our study reveals GSK3A/B and CDK1 as promising druggable targets for the non-type molecular subtype, which could improve the treatment outcomes for aggressive bladder carcinoma.
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Affiliation(s)
- Barnali Deb
- Institute of Bioinformatics, International Technology Park, Bangalore 560066, India.
- Manipal Academy of Higher Education, Madhav Nagar, Manipal 576104, India.
| | - Vinuth N Puttamallesh
- Institute of Bioinformatics, International Technology Park, Bangalore 560066, India.
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam 690525, India.
| | - Kirti Gondkar
- Institute of Bioinformatics, International Technology Park, Bangalore 560066, India.
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam 690525, India.
| | - Jean P Thiery
- Cancer Science Institute of Singapore, National University of Singapore, Centre for Translational Medicine NUS Yong Loo Lin School of Medicine, Singapore 117597, Singapore.
- Comprehensive Cancer Center, Institut Gustave Roussy, 114 Rue Edouard Vaillant, 94800 Villejuif, France.
- CNRS UMR 7057, Matter and Complex Systems, Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet Paris, 75205 Paris, France.
| | - Harsha Gowda
- Institute of Bioinformatics, International Technology Park, Bangalore 560066, India.
| | - Prashant Kumar
- Institute of Bioinformatics, International Technology Park, Bangalore 560066, India.
- Manipal Academy of Higher Education, Madhav Nagar, Manipal 576104, India.
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Stanton AE, Tong X, Lee S, Yang F. Biochemical Ligand Density Regulates Yes-Associated Protein Translocation in Stem Cells through Cytoskeletal Tension and Integrins. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8849-8857. [PMID: 30789697 PMCID: PMC6881158 DOI: 10.1021/acsami.8b21270] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Different tissue types are characterized by varying stiffness and biochemical ligands. Increasing substrate stiffness has been shown to trigger Yes-associated protein (YAP) translocation from the cytoplasm to the nucleus, yet the role of ligand density in modulating mechanotransduction and stem cell fate remains largely unexplored. Using polyacrylamide hydrogels coated with fibronectin as a model platform, we showed that stiffness-induced YAP translocation occurs only at intermediate ligand densities. At low or high ligand densities, YAP localization is dominated by ligand density independent of substrate stiffness. We further showed that ligand density-induced YAP translocation requires cytoskeleton tension and αVβ3-integrin binding. Finally, we demonstrate that increasing ligand density alone can enhance osteogenic differentiation regardless of matrix stiffness. Together, the findings from the present study establish ligand density as an important parameter for modulating stem cell mechanotransduction and differentiation, which is mediated by integrin clustering, focal adhesion, and cytoskeletal tension.
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Affiliation(s)
- Alice E. Stanton
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Xinming Tong
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA 94305, USA
| | - Soah Lee
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Fan Yang
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA 94305, USA
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42
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Thanjeem Begum ME, Baul HS, Venkatesh K, Sen D. Novel miRNA expression in the delta opioid signaling pathway mediated cell survivability in an in vitro model of ER stress. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 17:150-187. [PMID: 30716419 DOI: 10.1016/j.nano.2019.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/21/2018] [Accepted: 01/11/2019] [Indexed: 10/27/2022]
Abstract
Micro RNAs (miRNAs) are small non-coding RNAs which bind to the 3'-untranslated region of a mature mRNA to induce degradation; thereby regulating gene expression. It is reported that dysregulated miRNAs involved in neurodegenerative diseases including Parkinson's disease, could play a significant role as prognostic markers and therapeutic targets. Neuroprotective effect of delta opioid receptors (DOR) and its known miRNA regulation against endoplasmic reticulum (ER) stress have been reported previously by our lab. Current study focuses on understanding the regulation of novel miRNAs by DOR under ER stress. Novel miRNAs were identified for three different samples; control, tunicamycin (ER stress inducer), and tunicamycin+DADLE (DOR agonist). Differentially regulated miRNAs between the different samples were identified and pathway/target genes analysis was carried out. The results suggest that following DOR activation novel miRNAs like xxx-m0073-3p, xxx-m0225-3p, xxx-m0088-3p, xxx-m0098-5p etc. could regulate cell survival mechanisms in neuronal cells (SH-SY5Y) under ER stress.
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Affiliation(s)
- M Erfath Thanjeem Begum
- Cellular and Molecular Therapeutics Laboratory, Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
| | - Himadri Shekhaar Baul
- Cellular and Molecular Therapeutics Laboratory, Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
| | - Katari Venkatesh
- Cellular and Molecular Therapeutics Laboratory, Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
| | - Dwaipayan Sen
- Cellular and Molecular Therapeutics Laboratory, Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India..
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44
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Jeevaratnam K, Salvage SC, Li M, Huang CLH. Regulatory actions of 3',5'-cyclic adenosine monophosphate on osteoclast function: possible roles of Epac-mediated signaling. Ann N Y Acad Sci 2018; 1433:18-28. [PMID: 29846007 DOI: 10.1111/nyas.13861] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 04/20/2018] [Accepted: 04/26/2018] [Indexed: 02/02/2023]
Abstract
Alterations in cellular levels of the second messenger 3',5'-cyclic adenosine monophosphate ([cAMP]i ) regulate a wide range of physiologically important cellular signaling processes in numerous cell types. Osteoclasts are terminally differentiated, multinucleated cells specialized for bone resorption. Their systemic regulator, calcitonin, triggers morphometrically and pharmacologically distinct retraction (R) and quiescence (Q) effects on cell-spread area and protrusion-retraction motility, respectively, paralleling its inhibition of bone resorption. Q effects were reproduced by cholera toxin-mediated Gs -protein activation known to increase [cAMP]i , unaccompanied by the [Ca2+ ]i changes contrastingly associated with R effects. We explore a hypothesis implicating cAMP signaling involving guanine nucleotide-exchange activation of the small GTPase Ras-proximate-1 (Rap1) by exchange proteins directly activated by cAMP (Epac). Rap1 activates integrin clustering, cell adhesion to bone matrix, associated cytoskeletal modifications and signaling processes, and transmembrane transduction functions. Epac activation enhanced, whereas Epac inhibition or shRNA-mediated knockdown compromised, the appearance of markers for osteoclast differentiation and motility following stimulation by receptor activator of nuclear factor kappa-Β ligand (RANKL). Deficiencies in talin and Rap1 compromised in vivo bone resorption, producing osteopetrotic phenotypes in genetically modified murine models. Translational implications of an Epac-Rap1 signaling hypothesis in relationship to N-bisphosphonate actions on prenylation and membrane localization of small GTPases are discussed.
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Affiliation(s)
- Kamalan Jeevaratnam
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK.,School of Medicine, Perdana University - Royal College of Surgeons Ireland, Selangor, Malaysia
| | - Samantha C Salvage
- Department of Biochemistry, University of Cambridge, Cambridge, UK.,Physiological Laboratory, University of Cambridge, Cambridge, UK
| | - Mengye Li
- Physiological Laboratory, University of Cambridge, Cambridge, UK
| | - Christopher L-H Huang
- Department of Biochemistry, University of Cambridge, Cambridge, UK.,Physiological Laboratory, University of Cambridge, Cambridge, UK
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45
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Choi C, Thi Thao Tran N, Van Ngu T, Park SW, Song MS, Kim SH, Bae YU, Ayudthaya PDN, Munir J, Kim E, Baek MJ, Song S, Ryu S, Nam KH. Promotion of tumor progression and cancer stemness by MUC15 in thyroid cancer via the GPCR/ERK and integrin-FAK signaling pathways. Oncogenesis 2018; 7:85. [PMID: 30420637 PMCID: PMC6232104 DOI: 10.1038/s41389-018-0094-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/10/2018] [Accepted: 10/03/2018] [Indexed: 12/21/2022] Open
Abstract
Thyroid cancer is the fifth most common cancer diagnosed in women worldwide. Notwithstanding advancements in the prognosis and treatment of thyroid cancer, 10–20% of thyroid cancer patients develops chemotherapeutic resistance and experience relapse. According to previous reports and TCGA database, MUC15 (MUCIN 15) upregulation is highly correlated with thyroid cancer progression. However, the role of MUC15 in tumor progression and metastasis is unclear. This study aimed to investigate factors mediating cancer stemness in thyroid cancer. MUC15 plays an important role in sphere formation, as an evident from the expression of stemness markers including SOX2, KLF4, ALDH1A3, and IL6. Furthermore, ectopic expression of MUC15 activated extracellular signal-regulated kinase (ERK) signaling via G-protein–coupled receptor (GPCR)/cyclic AMP (cAMP) and integrin/focal adhesion kinase pathways. Interestingly, ectopic expression of MUC15 did not affect RAF/mitogen-activated protein kinase kinase (MEK)-mediated ERK activation. The present findings may provide novel insights into the development of diagnostic, prognostic, and therapeutic applications of MUC15 in thyroid cancer.
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Affiliation(s)
- Cheolwon Choi
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Nguyen Thi Thao Tran
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Trinh Van Ngu
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Sae Woong Park
- Department of Microbiology & Immunology, Weill Cornell Medical College, New York, USA
| | - Min Suk Song
- Department of Life Sciences, Yeungnam University, Gyeongsan, Korea
| | - Sung Hyun Kim
- Department of Physiology, Kyung Hee University, School of Medicine, Seoul, Korea
| | - Yun-Ui Bae
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | | | - Javaria Munir
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Eunbit Kim
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Moo-Jun Baek
- Department of Surgery, College of Medicine, Soonchunhyang University, Chonan, Korea
| | - Sujung Song
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Seongho Ryu
- Soonchunhyang Institute of Med-bioscience (SIMS), Soonchunhyang University, Cheonan, Korea.
| | - Kee-Hyun Nam
- Department of Surgery, College of Medicine, Yonsei University, Seoul, Korea.
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Autonomous conformational regulation of β 3 integrin and the conformation-dependent property of HPA-1a alloantibodies. Proc Natl Acad Sci U S A 2018; 115:E9105-E9114. [PMID: 30209215 DOI: 10.1073/pnas.1806205115] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Integrin α/β heterodimer adopts a compact bent conformation in the resting state, and upon activation undergoes a large-scale conformational rearrangement. During the inside-out activation, signals impinging on the cytoplasmic tail of β subunit induce the α/β separation at the transmembrane and cytoplasmic domains, leading to the extended conformation of the ectodomain with the separated leg and the opening headpiece that is required for the high-affinity ligand binding. It remains enigmatic which integrin subunit drives the bent-to-extended conformational rearrangement in the inside-out activation. The β3 integrins, including αIIbβ3 and αVβ3, are the prototypes for understanding integrin structural regulation. The Leu33Pro polymorphism located at the β3 PSI domain defines the human platelet-specific alloantigen (HPA) 1a/b, which provokes the alloimmune response leading to clinically important bleeding disorders. Some, but not all, anti-HPA-1a alloantibodies can distinguish the αIIbβ3 from αVβ3 and affect their functions with unknown mechanisms. Here we designed a single-chain β3 subunit that mimics a separation of α/β heterodimer on inside-out activation. Our crystallographic and functional studies show that the single-chain β3 integrin folds into a bent conformation in solution but spontaneously extends on the cell surface. This demonstrates that the β3 subunit autonomously drives the membrane-dependent conformational rearrangement during integrin activation. Using the single-chain β3 integrin, we identified the conformation-dependent property of anti-HPA-1a alloantibodies, which enables them to differently recognize the β3 in the bent state vs. the extended state and in the complex with αIIb vs. αV This study provides deeper understandings of integrin conformational activation on the cell surface.
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Tronser T, Demir K, Reischl M, Bastmeyer M, Levkin PA. Droplet microarray: miniaturized platform for rapid formation and high-throughput screening of embryoid bodies. LAB ON A CHIP 2018; 18:2257-2269. [PMID: 29978866 DOI: 10.1039/c8lc00450a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Stem cells are influenced by various factors present in their in vivo microenvironment, such as interactions with neighboring cells, the extracellular matrix or soluble molecules. This demonstrates the high complexity of the in vivo microenvironment. Hence, many advances have been made in developing 3D screening models mimicking this complexity and the in vivo-like state in order to ensure more biomedically relevant investigations in drug discovery. In the field of stem cell research embryoid bodies are often used as relevant 3D systems. Embryoid bodies are embryonic stem cell aggregates that recapitulate the early embryonic development and that can differentiate into derivatives of the three germ layers. Embryoid bodies enable the investigation of processes underlying embryonic development, tissue generation and identification of drugs with developmental toxicity. The ability to perform high-throughput screenings using embryoid bodies could be extremely important to accelerate the progress in the field of stem cell research and embryonic development. To date, there are no simple methods to create high-density microarrays of embryoid bodies that further enable their high-throughput screening important for biomedical research. Here we demonstrate a new method that enables formation and high-throughput screening of embryoid bodies in arrays of defined, separated microdroplets. Using the superhydrophobic-hydrophilic micropattern of the droplet microarray, we demonstrate rapid and facile one-step formation of a dense array of multiple droplets containing homogeneous, single embryoid bodies. Thorough characterization of the influence of the initial cell number on embryoid body size, roundness and distribution was performed. We applied the embryoid body microarray to screen 774 FDA-approved compounds, identifying compounds with developmental toxicity such as mycophenolate mofetil or embryonic lethality such as eptifibatide. This work demonstrates the potential of the droplet microarray for the rapid formation of high-density microarrays of single embryoid bodies and their high-throughput drug screenings.
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Affiliation(s)
- Tina Tronser
- Karlsruhe Institute of Technology (KIT), Institute of Toxicology and Genetics (ITG), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
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Tronser T, Laromaine A, Roig A, Levkin PA. Bacterial Cellulose Promotes Long-Term Stemness of mESC. ACS APPLIED MATERIALS & INTERFACES 2018; 10:16260-16269. [PMID: 29676562 DOI: 10.1021/acsami.8b01992] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Stem cells possess unique properties, such as the ability to self-renew and the potential to differentiate into an organism's various cell types. These make them highly valuable in regenerative medicine and tissue engineering. Their properties are precisely regulated in vivo through complex mechanisms that include multiple cues arising from the cell interaction with the surrounding extracellular matrix, neighboring cells, and soluble factors. Although much research effort has focused on developing systems and materials that mimic this complex microenvironment, the controlled regulation of differentiation and maintenance of stemness in vitro remains elusive. In this work, we demonstrate, for the first time, that the nanofibrous bacterial cellulose (BC) membrane derived from Komagataeibacter xylinus can inhibit the differentiation of mouse embryonic stem cells (mESC) under long-term conditions (17 days), improving their mouse embryonic fibroblast (MEF)-free cultivation in comparison to the MEF-supported conventional culture. The maintained cells' pluripotency was confirmed by the mESCs' ability to differentiate into the three germ layers (endo-, meso-, and ectoderm) after having been cultured on the BC membrane for 6 days. In addition, the culturing of mESCs on flexible, free-standing BC membranes enables the quick and facile manipulation and transfer of stem cells between culture dishes, both of which significantly facilitate the use of stem cells in routine culture and various applications. To investigate the influence of the structural and topographical properties of the cellulose on stem cell differentiation, we used the cellulose membranes differing in membrane thickness, porosity, and surface roughness. This work identifies bacterial cellulose as a novel convenient and flexible membrane material enabling long-term maintenance of mESCs' stemness and significantly facilitating the handling and culturing of stem cells.
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Affiliation(s)
- Tina Tronser
- Institute of Toxicology and Genetics (ITG) , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona , Consejo Superior de Investigaciones Científicas (ICMAB-CSIC) , Campus de la UAB , 08193 Bellaterra , Catalunya, Spain
| | - Anna Roig
- Institut de Ciència de Materials de Barcelona , Consejo Superior de Investigaciones Científicas (ICMAB-CSIC) , Campus de la UAB , 08193 Bellaterra , Catalunya, Spain
| | - Pavel A Levkin
- Institute of Toxicology and Genetics (ITG) , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
- Institute of Organic Chemistry , Karlsruhe Institute of Technology (KIT) , 76131 Karlsruhe , Germany
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Yu X, Akbarzadeh R, Pieper M, Scholzen T, Gehrig S, Schultz C, Zillikens D, König P, Petersen F. Neutrophil Adhesion Is a Prerequisite for Antibody-Mediated Proteolytic Tissue Damage in Experimental Models of Epidermolysis Bullosa Acquisita. J Invest Dermatol 2018; 138:1990-1998. [PMID: 29559343 DOI: 10.1016/j.jid.2018.03.1499] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/26/2018] [Accepted: 03/09/2018] [Indexed: 12/17/2022]
Abstract
Although uncontrolled proteolytic activity mediated by activated neutrophils is a major reason for tissue damage, therapeutic approaches using protease inhibitors are inefficient. Here, we investigated the role of the immune complex-induced neutrophil adhesion and protease release in tissue damage. We show both in vitro and in vivo that immune complex-mediated neutrophil adhesion to the target tissue depends on β2 integrins. Without affecting elastase or reactive oxygen species release, blocking of adhesion drastically inhibited tissue damage in an experimental model of autoantibody-mediated skin blistering disease. By using a cell-bound fluorescent resonance energy transfer-based elastase sensor, we detected elastase enzyme activity on the surface of adherent cells resistant to protease inhibitors. Inhibitor resistance was lost by CD18 blockade or deficiency in vitro and in vivo. Immune complex-induced neutrophil adhesion created an enclosed protected space between the cell and its target structure where proteinases and reactive oxygen species can execute their tissue-damaging effect. Because immune complex-induced neutrophil adhesion represents an indispensable step for tissue damage of many diseases, our findings may facilitate the development of strategies for the treatment of such disorders.
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Affiliation(s)
- Xinhua Yu
- Priority Area Asthma and Allergy, Research Center Borstel, Borstel, Germany; Airway Research Center North, German Center for Lung Research (DZL); Xiamen-Borstel Joint Laboratory of Autoimmunity, The Medical College of Xiamen University, Xiamen University, Xiamen, China
| | - Reza Akbarzadeh
- Priority Area Asthma and Allergy, Research Center Borstel, Borstel, Germany; Airway Research Center North, German Center for Lung Research (DZL); Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Mario Pieper
- Airway Research Center North, German Center for Lung Research (DZL); Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Thomas Scholzen
- Priority Area Asthma and Allergy, Research Center Borstel, Borstel, Germany
| | - Stefanie Gehrig
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany; Translational Lung Research Center Heidelberg, German Center for Lung Research (DZL)
| | - Carsten Schultz
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany; Translational Lung Research Center Heidelberg, German Center for Lung Research (DZL)
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Peter König
- Airway Research Center North, German Center for Lung Research (DZL); Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Frank Petersen
- Priority Area Asthma and Allergy, Research Center Borstel, Borstel, Germany; Airway Research Center North, German Center for Lung Research (DZL).
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50
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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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