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| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0281394 | PLOS |
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On-chip non-contact mechanical cell stimulation - quantification of SKOV-3 alignment to suspended microstructures.
Heliyon
January 2025
Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand.
Although the accumulation of random genetic mutations has been traditionally viewed as the main cause of cancer progression, altered mechanobiological profiles of the cells and microenvironment also play a major role as a mutation-independent element. To probe the latter, we have previously reported a microfluidic cell-culture platform with an integrated flexible actuator and its application for sequential cyclic compression of cancer cells. The platform is composed of a control microchannel in a top layer for introducing external pressure, and a polydimethylsiloxane (PDMS) membrane from which a monolithically-integrated actuator protrudes downwards into a cell-culture microchannel.
View Article and Find Full Text PDFDedicator of Cytokinesis 2 regulates cytoskeletal actin dynamics and is essential for platelet biogenesis and functions.
Cardiovasc Res
January 2025
Department of Pharmacology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China.
Aims: Dedicator of Cytokinesis 2 (DOCK2), a member of the DOCK family of Guanine nucleotide exchange factors that specifically act on the Rho GTPases including Rac and Cdc42, plays pivotal roles in the regulation of leukocyte homeostasis. However, its functions in platelets remain unknown.
Methods And Results: Using mice with genetic deficiency of DOCK2 (Dock2-/-), we showed that Dock2-/-mice exhibited a macrothrombocytopenic phenotype characterized as decreased platelet count and enlarged platelet size by transmission electron microscopy.
Control of tongue movements by the Purkinje cells of the cerebellum.
bioRxiv
January 2025
Laboratory for Computational Motor Control, Dept. of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, USA.
We use our tongue much like our hands: to interact with objects and transport them. For example, we use our hands to sense properties of objects and transport them in the nearby space, and we use our tongue to sense properties of food morsels and transport them through the oral cavity. But what does the cerebellum contribute to control of tongue movements? Here, we trained head-fixed marmosets to make skillful tongue movements to harvest food from small tubes that were placed at sharp angles to their mouth.
View Article and Find Full Text PDFInhibition of platelet activation process upon tris (2-chloroethyl) phosphate exposure: Role of PFKP-mediated glycolysis and the pentose phosphate pathway.
Environ Pollut
January 2025
Department of Occupational Health and Environmental Health, School of Public Health, Qingdao University, Qingdao, China.
Tris (2-chloroethyl) phosphate (TCEP), recognized as an emerging pollutant, has been frequently detected in human blood. Maintenance of blood homeostasis is indispensable for regulating various physiological states and overall health, yet hematological toxicology of TCEP has not been extensively investigated. Platelets, a vital component of blood, are fundamental in the processes of hemostasis and thrombosis through their activation; thus, this study was designed to elucidate the effects and underlying mechanisms of TCEP on platelet activation.
View Article and Find Full Text PDFStructural conservation and functional role of TfpY-like proteins in type IV pilus assembly.
J Bacteriol
January 2025
Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada.
Unlabelled: Type IV pili (T4P) are important virulence factors that allow bacteria to adhere to and rapidly colonize their hosts. T4P are primarily composed of major pilins that undergo cycles of extension and retraction and minor pilins that initiate pilus assembly. Bacteriophages use T4P as receptors and exploit pilus dynamics to infect their hosts.
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