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Wang X, Zhang C, Song H, Yuan J, Zhang X, Yuan Y, Zhang L, He J. Characterization of LIMA1 and its emerging roles and potential therapeutic prospects in cancers. Front Oncol 2023; 13:1115943. [PMID: 37274282 PMCID: PMC10235525 DOI: 10.3389/fonc.2023.1115943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 05/02/2023] [Indexed: 06/06/2023] Open
Abstract
Actin is the most abundant and highly conserved cytoskeletal protein present in all eukaryotic cells. Remodeling of the actin cytoskeleton is controlled by a variety of actin-binding proteins that are extensively involved in biological processes such as cell motility and maintenance of cell shape. LIM domain and actin-binding protein 1 (LIMA1), as an important actin cytoskeletal regulator, was initially thought to be a tumor suppressor frequently downregulated in epithelial tumors. Importantly, the deficiency of LIMA1 may be responsible for dysregulated cytoskeletal dynamics, altered cell motility and disrupted cell-cell adhesion, which promote tumor proliferation, invasion and migration. As research progresses, the roles of LIMA1 extend from cytoskeletal dynamics and cell motility to cell division, gene regulation, apical extrusion, angiogenesis, cellular metabolism and lipid metabolism. However, the expression of LIMA1 in malignant tumors and its mechanism of action have not yet been elucidated, and many problems and challenges remain to be addressed. Therefore, this review systematically describes the structure and biological functions of LIMA1 and explores its expression and regulatory mechanism in malignant tumors, and further discusses its clinical value and therapeutic prospects.
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Affiliation(s)
- Xiaoxiao Wang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Chao Zhang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Huangqin Song
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Junlong Yuan
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Xiaomin Zhang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Yiran Yuan
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Lei Zhang
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
- Hepatic Surgery Center, Institute of Hepato-Pancreato-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiefeng He
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
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Taha M, Aldirawi M, März S, Seebach J, Odenthal-Schnittler M, Bondareva O, Bojovic V, Schmandra T, Wirth B, Mietkowska M, Rottner K, Schnittler H. EPLIN-α and -β Isoforms Modulate Endothelial Cell Dynamics through a Spatiotemporally Differentiated Interaction with Actin. Cell Rep 2020; 29:1010-1026.e6. [PMID: 31644899 DOI: 10.1016/j.celrep.2019.09.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/08/2019] [Accepted: 09/13/2019] [Indexed: 12/14/2022] Open
Abstract
Actin-binding proteins are essential for linear and branched actin filament dynamics that control shape change, cell migration, and cell junction remodeling in vascular endothelium (endothelial cells [ECs]). The epithelial protein lost in neoplasm (EPLIN) is an actin-binding protein, expressed as EPLIN-α and EPLIN-β by alternative promoters; however, the isoform-specific functions are not yet understood. Aortic compared to cava vein ECs and shear stress-exposed cultured ECs express increased EPLIN-β levels that stabilize stress fibers. In contrast, EPLIN-α expression is increased in growing and migrating ECs, is targeted to membrane protrusions, and terminates their growth via interaction with the Arp2/3 complex. The data indicate that EPLIN-α controls protrusion dynamics while EPLIN-β has an actin filament stabilizing role, which is consistent with FRAP analyses demonstrating a lower EPLIN-β turnover rate compared to EPLIN-α. Together, EPLIN isoforms differentially control actin dynamics in ECs, essential in shear stress responses, cell migration, and barrier function.
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Affiliation(s)
- Muna Taha
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Mohammed Aldirawi
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Sigrid März
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Jochen Seebach
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Maria Odenthal-Schnittler
- Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Department of Ophthalmology, Westfälische Wilhelms University of Münster, Medical Center, 48149 Münster, Germany
| | - Olga Bondareva
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Vesna Bojovic
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Thomas Schmandra
- Heart and Vascular Clinic Bad Neustadt, Bad Neustadt a.d. Saale, Germany
| | - Benedikt Wirth
- Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Institute for Analysis and Numerics, Westfälische Wilhelms University of Münster, 48149 Münster Germany
| | - Magdalena Mietkowska
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany; Molecular Cell Biology Group, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Klemens Rottner
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany; Molecular Cell Biology Group, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Hans Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany.
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Sensitization to endothelial cell antigens: Unraveling the cause or effect paradox. Hum Immunol 2019; 80:614-620. [PMID: 31054781 DOI: 10.1016/j.humimm.2019.04.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/02/2019] [Accepted: 04/23/2019] [Indexed: 01/03/2023]
Abstract
Anti-endothelial cell antibodies (AECAs) have been correlated with increased acute and chronic rejection across all organ types and early graft dysfunction in kidney and heart transplantation. Nevertheless, the lack of appropriate tools and clear criteria for defining injurious versus non-injurious AECAs prohibits their routine inclusion in clinical risk assessments and diagnostic algorithms for antibody mediated injury. Clinical characterization of AECAs is complicated due to the wide range of polymorphic and non-polymorphic antigens expressed across different vascular tissues and the diverse array of specificities observed between individuals. This complexity is also reflected in the broad spectrum of reported injury phenotypes. AECAs detected at time of allograft dysfunction may represent biomarkers of past vascular injury or active contributors to a current rejection process. New tools within the fields of proteomics, genomics, bioinformatics, and imaging are currently being validated and hold great promise for unraveling the AECA paradox.
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Cao J, Schnittler H. Putting VE-cadherin into JAIL for junction remodeling. J Cell Sci 2019; 132:132/1/jcs222893. [DOI: 10.1242/jcs.222893] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
ABSTRACT
Junction dynamics of endothelial cells are based on the integration of signal transduction, cytoskeletal remodeling and contraction, which are necessary for the formation and maintenance of monolayer integrity, but also enable repair and regeneration. The VE-cadherin–catenin complex forms the molecular basis of the adherence junctions and cooperates closely with actin filaments. Several groups have recently described small actin-driven protrusions at the cell junctions that are controlled by the Arp2/3 complex, contributing to cell junction regulation. We identified these protrusions as the driving force for VE-cadherin dynamics, as they directly induce new VE-cadherin-mediated adhesion sites, and have accordingly referred to these structures as junction-associated intermittent lamellipodia (JAIL). JAIL extend over only a few microns and thus provide the basis for a subcellular regulation of adhesion. The local (subcellular) VE-cadherin concentration and JAIL formation are directly interdependent, which enables autoregulation. Therefore, this mechanism can contribute a subcellularly regulated adaptation of cell contact dynamics, and is therefore of great importance for monolayer integrity and relative cell migration during wound healing and angiogenesis, as well as for inflammatory responses. In this Review, we discuss the mechanisms and functions underlying these actin-driven protrusions and consider their contribution to the dynamic regulation of endothelial cell junctions.
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Affiliation(s)
- Jiahui Cao
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster Germany
| | - Hans Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster Germany
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