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Cui Y, Rolova T, Fagerholm SC. The role of integrins in brain health and neurodegenerative diseases. Eur J Cell Biol 2024; 103:151441. [PMID: 39002282 DOI: 10.1016/j.ejcb.2024.151441] [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: 04/29/2024] [Revised: 06/28/2024] [Accepted: 07/02/2024] [Indexed: 07/15/2024] Open
Abstract
Integrins are heterodimeric membrane proteins expressed on the surface of most cells. They mediate adhesion and signaling processes relevant for a wealth of physiological processes, including nervous system development and function. Interestingly, integrins are also recognized therapeutic targets for inflammatory diseases, such as multiple sclerosis. Here, we discuss the role of integrins in brain development and function, as well as in neurodegenerative diseases affecting the brain (Alzheimer's disease, multiple sclerosis, stroke). Furthermore, we discuss therapeutic targeting of these adhesion receptors in inflammatory diseases of the brain.
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Affiliation(s)
- Yunhao Cui
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki 00790, Finland
| | - Taisia Rolova
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki 00290, Finland
| | - Susanna C Fagerholm
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki 00790, Finland.
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Chowdhury D, Mistry A, Maity D, Bhatia R, Priyadarshi S, Wadan S, Chakraborty S, Haldar S. Pan-cancer analyses suggest kindlin-associated global mechanochemical alterations. Commun Biol 2024; 7:372. [PMID: 38548811 PMCID: PMC10978987 DOI: 10.1038/s42003-024-06044-5] [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: 11/01/2022] [Accepted: 03/11/2024] [Indexed: 04/01/2024] Open
Abstract
Kindlins serve as mechanosensitive adapters, transducing extracellular mechanical cues to intracellular biochemical signals and thus, their perturbations potentially lead to cancer progressions. Despite the kindlin involvement in tumor development, understanding their genetic and mechanochemical characteristics across different cancers remains elusive. Here, we thoroughly examined genetic alterations in kindlins across more than 10,000 patients with 33 cancer types. Our findings reveal cancer-specific alterations, particularly prevalent in advanced tumor stage and during metastatic onset. We observed a significant co-alteration between kindlins and mechanochemical proteome in various tumors through the activation of cancer-related pathways and adverse survival outcomes. Leveraging normal mode analysis, we predicted structural consequences of cancer-specific kindlin mutations, highlighting potential impacts on stability and downstream signaling pathways. Our study unraveled alterations in epithelial-mesenchymal transition markers associated with kindlin activity. This comprehensive analysis provides a resource for guiding future mechanistic investigations and therapeutic strategies targeting the roles of kindlins in cancer treatment.
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Affiliation(s)
- Debojyoti Chowdhury
- Department of Chemical and Biological Sciences, S.N. Bose National Centre for Basic Sciences, Kolkata, West Bengal, 700106, India.
| | - Ayush Mistry
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, 131029, India
| | - Debashruti Maity
- Department of Chemical and Biological Sciences, S.N. Bose National Centre for Basic Sciences, Kolkata, West Bengal, 700106, India
| | - Riti Bhatia
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, 131029, India
| | - Shreyansh Priyadarshi
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, 131029, India
| | - Simran Wadan
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, 131029, India
| | - Soham Chakraborty
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, 131029, India
| | - Shubhasis Haldar
- Department of Chemical and Biological Sciences, S.N. Bose National Centre for Basic Sciences, Kolkata, West Bengal, 700106, India.
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, 131029, India.
- Technical Research Centre, S.N. Bose National Centre for Basic Sciences, Kolkata, West Bengal, 700106, India.
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Davis-Lunn M, Goult BT, Andrews MR. Clutching at Guidance Cues: The Integrin-FAK Axis Steers Axon Outgrowth. BIOLOGY 2023; 12:954. [PMID: 37508384 PMCID: PMC10376711 DOI: 10.3390/biology12070954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/27/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023]
Abstract
Integrin receptors are essential contributors to neurite outgrowth and axon elongation. Activated integrins engage components of the extracellular matrix, enabling the growth cone to form point contacts, which connect the extracellular substrate to dynamic intracellular protein complexes. These adhesion complexes facilitate efficient growth cone migration and neurite extension. Major signalling pathways mediated by the adhesion complex are instigated by focal adhesion kinase (FAK), whilst axonal guidance molecules present in vivo promote growth cone turning or retraction by local modulation of FAK activity. Activation of FAK is marked by phosphorylation following integrin engagement, and this activity is tightly regulated during neurite outgrowth. FAK inhibition slows neurite outgrowth by reducing point contact turnover; however, mutant FAK constructs with enhanced activity stimulate aberrant outgrowth. Importantly, FAK is a major structural component of maturing adhesion sites, which provide the platform for actin polymerisation to drive leading edge advance. In this review, we discuss the coordinated signalling of integrin receptors and FAK, as well as their role in regulating neurite outgrowth and axon elongation. We also discuss the importance of the integrin-FAK axis in vivo, as integrin expression and activation are key determinants of successful axon regeneration following injury.
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Affiliation(s)
- Mathew Davis-Lunn
- Faculty of Environmental and Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Benjamin T Goult
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, UK
| | - Melissa R Andrews
- Faculty of Environmental and Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
- Centre for Human Development, Stem Cells and Regeneration, School of Biological Sciences, University of Southampton, Southampton SO17 1BJ, UK
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Ji Y, Fang Y, Wu J. Tension Enhances the Binding Affinity of β1 Integrin by Clamping Talin Tightly: An Insight from Steered Molecular Dynamics Simulations. J Chem Inf Model 2022; 62:5688-5698. [PMID: 36269690 DOI: 10.1021/acs.jcim.2c00963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Integrin activation is a predominant step for cell-cell and cell-ECM interactions. Talin and Kindlin are mechanosensitive adaptor proteins that bind to the integrin cytoplasmic tail and mediate integrin activation, cytoskeleton rearrangement, and focal adhesion assembly. However, knowledge about how Talin and Kindlin synergistically assist integrin activation remains unclear. Here, we performed so-called "ramp-clamp" SMD simulations, which modeled the mechanosignaling from Kindlin, to investigate the effect of tension on the interaction of the β1 integrin cytoplasmic tail with the Talin-F3 domain. The present results showed that mild but not excessive stretching enhanced the binding of integrin with Talin. This mechanical regulation on integrin affinity to Talin referred to an event cascade, in which under stretching, the integrin cytoplasmic tail adopted allostery in response to the mechanical stimulus, remodeling of integrin in favor of Talin-association ensued, and finally, a stable, close-knit complex was formed. In the cascade, the torsion angle transition of integrin was the cue for the stable interaction of the complex under tensile force. The present work suggested a model for Talin and Kindlin to synergistically activate integrin. It should help understand integrin activation and its mechanochemical regulation mechanism, integrin-related innate cellular immune responses, cell adhesion, cell-cell interaction, and integrin-related drug development.
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Affiliation(s)
- Yanru Ji
- Institute of Biomechanics/School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Ying Fang
- Institute of Biomechanics/School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Jianhua Wu
- Institute of Biomechanics/School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
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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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Li Q, Lan T, Xie J, Lu Y, Zheng D, Su B. Integrin-Mediated Tumorigenesis and Its Therapeutic Applications. Front Oncol 2022; 12:812480. [PMID: 35223494 PMCID: PMC8873568 DOI: 10.3389/fonc.2022.812480] [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: 11/10/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
Integrins, a family of adhesion molecules generally exist on the cell surface, are essential for regulating cell growth and its function. As a bi-directional signaling molecule, they mediate cell-cell and cell-extracellular matrix interaction. The recognitions of their key roles in many human pathologies, including autoimmunity, thrombosis and neoplasia, have revealed their great potential as a therapeutic target. This paper focuses on the activation of integrins, the role of integrins in tumorigenesis and progression, and advances of integrin-dependent tumor therapeutics in recent years. It is expected that understanding function and signaling transmission will fully exploit potentialities of integrin as a novel target for tumors.
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Affiliation(s)
- Qingling Li
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Preventive Dentistry, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Ting Lan
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Jian Xie
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Preventive Dentistry, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Youguang Lu
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Preventive Dentistry, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Dali Zheng
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- *Correspondence: Dali Zheng, ; Bohua Su,
| | - Bohua Su
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Preventive Dentistry, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- *Correspondence: Dali Zheng, ; Bohua Su,
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Gahmberg CG, Grönholm M. How integrin phosphorylations regulate cell adhesion and signaling. Trends Biochem Sci 2021; 47:265-278. [PMID: 34872819 PMCID: PMC8642147 DOI: 10.1016/j.tibs.2021.11.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/08/2021] [Accepted: 11/08/2021] [Indexed: 12/13/2022]
Abstract
Cell adhesion is essential for the formation of organs, cellular migration, and interaction with target cells and the extracellular matrix. Integrins are large protein α/β-chain heterodimers and form a major family of cell adhesion molecules. Recent research has dramatically increased our knowledge of how integrin phosphorylations regulate integrin activity. Phosphorylations determine the signaling complexes formed on the cytoplasmic tails, regulating downstream signaling. α-Chain phosphorylation is necessary for inducing β-chain phosphorylation in LFA-1, and the crosstalk from one integrin to another activating or inactivating its function is in part mediated by phosphorylation of β-chains. The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus receptor angiotensin-converting enzyme 2 (ACE2) and possible integrin coreceptors may crosstalk and induce a phosphorylation switch and autophagy.
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Affiliation(s)
- Carl G Gahmberg
- Molecular and Integrative Biosciences Research Programme, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland.
| | - Mikaela Grönholm
- Molecular and Integrative Biosciences Research Programme, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; Faculty of Pharmacy, University of Helsinki, Viikinkaari 5E, 00014 Helsinki, Finland
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