2024
Active tension and membrane friction mediate cortical flows and blebbing in a model actomyosin cortex
Sakamoto R, Murrell M. Active tension and membrane friction mediate cortical flows and blebbing in a model actomyosin cortex. Physical Review Research 2024, 6: 033024. DOI: 10.1103/physrevresearch.6.033024.Peer-Reviewed Original ResearchActomyosin cortexCell membraneActin cytoskeletonCortical flowMembrane blebbingCell divisionCell migrationCytoskeletonActomyosinBiological phenomenaMembrane bulgesBlebsCellsMembraneViscoelastic fluidMechanical responseElastic stressesStress yieldActinUbiquitous structuresApoptosisMechanical stressMembrane elasticityPhysical behaviorF-actin architecture determines the conversion of chemical energy into mechanical work
Sakamoto R, Murrell M. F-actin architecture determines the conversion of chemical energy into mechanical work. Nature Communications 2024, 15: 3444. PMID: 38658549, PMCID: PMC11043346, DOI: 10.1038/s41467-024-47593-x.Peer-Reviewed Original ResearchConceptsF-actin architectureF-actinATP consumption rateF-actin bundlesIn vitro reconstitutionDynamic cellular processesHigher ATP consumptionActin cytoskeletonFilamentous actinMyosin motorsCellular processesATP hydrolysisPurified componentsAdenosine triphosphateForce generationConversion of chemical energyATP consumptionConsumption rateActinChemical energyMyosinNetwork contractionCytoskeletonEnergetic principlesHydrolysis
2022
In Vitro Reconstitution of the Actin Cytoskeleton Inside Giant Unilamellar Vesicles.
Chen S, Sun Z, Murrell M. In Vitro Reconstitution of the Actin Cytoskeleton Inside Giant Unilamellar Vesicles. Journal Of Visualized Experiments 2022 PMID: 36094272, DOI: 10.3791/64026.Peer-Reviewed Original ResearchConceptsGiant unilamellar vesiclesCytoskeleton networkLipid dropletsCell‐mimicking systemUnilamellar vesiclesActin cytoskeletonVitro reconstitutionGenetic regulationActin networkBiochemical regulationSynthetic biologyCellular activitiesLive cellsMixture of proteinsActin polymersLipid componentsVesiclesRegulationReconstitutionCellsCytoskeletonCell deformationMachineryBiologyQuantitative insights
2015
High‐content imaging with micropatterned multiwell plates reveals influence of cell geometry and cytoskeleton on chromatin dynamics
Harkness T, McNulty J, Prestil R, Seymour S, Klann T, Murrell M, Ashton R, Saha K. High‐content imaging with micropatterned multiwell plates reveals influence of cell geometry and cytoskeleton on chromatin dynamics. Biotechnology Journal 2015, 10: 1555-1567. PMID: 26097126, PMCID: PMC6948850, DOI: 10.1002/biot.201400756.Peer-Reviewed Original ResearchConceptsChromatin dynamicsHigh-content imagingMicroenvironmental cuesHuman cellsCellular microenvironment influencesHuman cell biologySingle cell geometryCell-cell contactExtracellular matrix connectionsActin cytoskeletonHuman cell behaviorCytoskeletal organizationHigh-content screening technologyCell biologyBiophysical cuesCellular responsesCellular microenvironmentNuclear elongationCell behaviorCellular biophysicsSubcellular imagingComplex milieuCellular geometryHuman fibroblastsCytoskeleton