Ronen ZAIDEL-BAR
Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel-Aviv University, Israel
Laboratory website
Zaidel-Bar Cell Adhesion Lab
What is Rho-dependent IL-2 receptor endocytosis?
What is Rho-dependent IL-2 receptor endocytosis? Internalization of transmembrane receptors was thought to occur exclusively via clathrin-mediated endocytosis (CME). However, the discovery of clathrin-independent endocytic routes, in particular, the pathway that mediates the internalization [...]
What is flotillin-associated endocytosis?
What is flotillin-associated endocytosis? Flotillins, which are proteins that localize to specific microdomains or lipid rafts in the plasma membrane, mediate a clathrin-independent endocytosis pathway that is regulated by the Src family tyrosine kinase [...]
What is exocytosis?
What is exocytosis? Exocytosis is defined as the transport and fusion of secretory vesicles with the plasma membrane and the extracellular space. There are three exocytosis pathways that deliver vesicles to the plasma membrane. [...]
What is autophagy?
What is autophagy? Autophagy, meaning self-eating, is an intracellular degradation system wherein unwanted cargo, such as old or damaged organelles, unneeded proteins, as well as pathogenic agents, are digested and the macromolecular contents from [...]
What is caveolar endocytosis?
What is caveolar endocytosis? Macropinocytosis or ‘cell drinking’ is a type of endocytosis that involves the nonspecific uptake of extracellular material, such as soluble molecules, nutrients, and antigens. First observed in 1931 by Warren [...]
Genome Regulation
Genome Regulation Genome regulation encompasses all facets of gene expression, from the biochemical modifications of DNA, to the physical arrangement of chromosomes and the activity of the transcription machinery. The genome regulation programs that [...]
Ronen Zaidel-Bar
Visiting Faculty
Currently Visting
6-12 Nov 2018
Office: T-Lab, Level 5
Research Areas
Cell-cell and cell-matrix adhesion, Regulation of actomyosin contractility and dynamics, C. elegans development, mechanics and molecular mechanisms of morphogenesis
Research Interests
- How do specific cytoskeletal proteins contribute to the organization and function of cell adhesion and actomyosin structures?
- How are signals processed within the “adhesome” and “contractome” to arrive at the appropriate cytoskeletal arrangement for a given cell state?
- How do adhesion sites and the cytoskeleton sense and respond to external mechanical forces?
Biography
Dr Zaidel-Bar obtained his Ph.D. working with Prof Benny Geiger (Weizmann Institute of Science) on the role of force in regulating cell-matrix adhesions. Their work first focused on single proteins and evolved to encompass the entire adhesome network. In his Postdoctoral training with Prof Jeff Hardin (University of Wisconsin – Madison) Dr Zaidel-Bar switched from studying cells in culture to employing the genetic model organism C. elegans for the study of cell-cell adhesions during development. Dr Zaidel-Bar was attracted to Singapore by the opening of MBI and was awarded the Singapore National Research Foundation Fellowship for promising young investigators.
Education
PhD Weizmann Institute of Science
Recent Publications
- Bertocchi C, Alegría JJ, Vásquez-Sepúlveda S, Ibanez-Prat R, Srinivasan A, Arrano-Valenzuela I, Castro-Pereira B, Soto-Montandon C, Trujillo-Espergel A, Montenegro-Rojas I, Deguchi S, Owen GI, Kanchanawong P, Cerda M, Motta G, Zaidel-Bar R, and Ravasio A. Systematic AI-assisted screening of the cadhesome to map epithelial monolayer mechanics. Cell Commun Signal 2026;. [PMID: 42399739]
- Ray S, Agarwal P, Nitzan A, Nédélec F, and Zaidel-Bar R. Actin capping protein regulates actomyosin contractility to maintain germline architecture in C. elegans. Development 2023;. [PMID: 36897576]
- Avivi Kela S, Sethi K, Tan PY, Suresh D, Ong HT, Castaneda PG, Amin MR, Laviv T, Cram EJ, Faix J, and Zaidel-Bar R. Tension-dependent RHGF-1 recruitment to stress fibers drives robust spermathecal tissue contraction. J Cell Biol 2022; 222(2). [PMID: 36574264]
- Chen Z, Oh D, Biswas KH, Zaidel-Bar R, and Groves JT. Probing the effect of clustering on EphA2 receptor signaling efficiency by subcellular control of ligand-receptor mobility. Elife 2021; 10. [PMID: 34414885]
- Hu S, Grobe H, Guo Z, Wang Y, Doss BL, Pan M, Ladoux B, Bershadsky AD, and Zaidel-Bar R. Reciprocal regulation of actomyosin organization and contractility in non-muscle cells by tropomyosins and alpha-actinins. Mol. Biol. Cell 2019;:mbcE19020082. [PMID: 31216217]
- Desai SK, Padmanabhan A, Harshe S, Zaidel-Bar R, and Kenney LJ. Salmonella biofilms program innate immunity for persistence in Caenorhabditis elegans. Proc. Natl. Acad. Sci. U.S.A. 2019;. [PMID: 31160462]
- Bouffard J, Cecchetelli AD, Clifford C, Sethi K, Zaidel-Bar R, and Cram EJ. The RhoGAP SPV-1 regulates calcium signaling to control the contractility of the C. elegans spermatheca during embryo transits. Mol. Biol. Cell 2019;:mbcE18100633. [PMID: 30726159]
- Priti A, Ong HT, Toyama Y, Padmanabhan A, Dasgupta S, Krajnc M, and Zaidel-Bar R. Syncytial germline architecture is actively maintained by contraction of an internal actomyosin corset. Nat Commun 2018; 9(1):4694. [PMID: 30410005]
- Agarwal P, and Zaidel-Bar R. Principles of Actomyosin Regulation In Vivo. Trends Cell Biol. 2018;. [PMID: 30385150]
- Chen Z, Oh D, Biswas KH, Yu C, Zaidel-Bar R, and Groves JT. Spatially modulated ephrinA1:EphA2 signaling increases local contractility and global focal adhesion dynamics to promote cell motility. Proc. Natl. Acad. Sci. U.S.A. 2018;. [PMID: 29866846]
Lab Members
Goh Wei Jia
Alumni, Tee YH Group
Mechanobiology Institute, National University of Singapore, has a new director
MBI welcomes Professor Li Rong, as MBI's new director. Professor Li joins us from Johns Hopkins University, where she has been a Bloomberg Distinguished Professor at the School of Medicine and the Whiting School of Engineering since 2015. Professor Li is also the director of the Center for Cell Dynamics at the School of Medicine’s Institute for Basic Biomedical Sciences.
Swati Sen
Alumni, Viasnoff Group
Guy Tran Van Nhieu visiting from Center for Interdisciplinary Research in Biology, Collège de France
Guy Tran Van Nhieu from the Center for Interdisciplinary Research in Biology, Collège de France is visiting from 6 May - 30 July.
MBI Research Associate Visalatchi Thiagarajan chosen one of Singapore’s top ten techs
MBI Research Associate Visalatchi Thiagarajan has been chosen as one of the top ten laboratory technicians in Singapore, in the inaugural Lab Tech of the Year 2019 awards given out by Asian Scientist Magazine.
Somsubhro Mukherjee
Alumni, Low Group
Dr Hu Xian Edna visiting from University of Oslo
Dr Hu Xian Edna from University of Oslo is visiting from 25 Mar - 23 Apr 2019.
Prof GV Shivashankar featured on Becoming Human, Channel News Asia
MBI Principal Investigator and Deputy Director Professor GV Shivashankar is featured in the Channel News Asia documentary series, Becoming Human: Unnatural Genius to discuss how his lab uses AI and and nuclear mechanogenomic architecture to detect early stage cancer cells.
Myosin motors show their muscle
How cells generate high forces for testing the softness of their environment
Chloe May Simpson
Alumni, Sheetz Lab
Aaron Joseph Farrugia
Senior Research Fellow, Bershadsky Lab
Geetika Sahni
Senior Research Fellow, Viasnoff Group
