The PIEZO protein family was first described in animals where these mechanosensitive calcium channels perform numerous essential functions, including the perception of light touch, shear, and compressive forces. PIEZO homologs are present in most eukaryotic lineages and recently we reported that two PIEZO homologs from moss localize to the vacuolar membrane and modulate its morphology in tip-growing caulonemal cells. Here we show that predicted structures of both PIEZO1 and PIEZO2 are very similar to that of mouse Piezo2. Furthermore, we show that both moss genes are ubiquitously expressed in moss vegetative tissues and that they are not required for normal vacuolar pH or intracellular osmotic potential. These results suggest that moss PIEZO proteins are widely expressed mechanosensory calcium channels that serve a signaling rather than maintenance role in vacuoles.
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http://dx.doi.org/10.1080/15592324.2021.2015893 | DOI Listing |
Science
November 2024
California Institute for Quantitative Biosciences (QB3) and Department of Molecular and Cell Biology, University of California Berkeley, Berkeley, CA, USA.
Sexual reproduction relies on robust quality control during meiosis. Assembly of the synaptonemal complex between homologous chromosomes (synapsis) regulates meiotic recombination and is crucial for accurate chromosome segregation in most eukaryotes. Synapsis defects can trigger cell cycle delays and, in some cases, apoptosis.
View Article and Find Full Text PDFDevelopment
February 2024
National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
The mechanosensitive PIEZO channel family has been linked to over 26 disorders and diseases. Although progress has been made in understanding these channels at the structural and functional levels, the underlying mechanisms of PIEZO-associated diseases remain elusive. In this study, we engineered four PIEZO-based disease models using CRISPR/Cas9 gene editing.
View Article and Find Full Text PDFThe mechanosensitive PIEZO channel family has been linked to over 26 disorders and diseases. Although progress has been made in understanding these channels at the structural and functional levels, the underlying mechanisms of PIEZO-associated diseases remain elusive. In this study, we engineered four PIEZO-based disease models using CRISPR/Cas9 gene editing.
View Article and Find Full Text PDFMicrob Physiol
December 2023
Department of Molecular Biology, School of Biological Sciences, University of California, San Diego, California, USA.
Members of the Piezo family of mechanically activated cation channels are involved in multiple physiological processes in higher eukaryotes, including vascular development, cell differentiation, touch perception, hearing, and more, but they are also common in single-celled eukaryotic microorganisms. Mutations in these proteins in humans are associated with a variety of diseases, such as colorectal adenomatous polyposis, dehydrated hereditary stomatocytosis, and hereditary xerocytosis. Available 3D structures for Piezo proteins show nine regions of four transmembrane segments each that have the same fold.
View Article and Find Full Text PDFMethods Mol Biol
February 2023
Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan.
In the CRISPR/Cas9-mediated gene cassette knockin (KI) strategy, a gene cassette is integrated into a target locus through a proper DNA repair pathway after the Cas9-induced double-strand DNA breaks; the activation of the DNA repair pathway is known to be correlated with the cell cycle. Recently, we have reported a new KI approach named SPRINT (S-phase pronuclear injection for targeting)-CRISPR, focusing on the correlation between the cell cycle and the KI efficiency in the mouse zygote microinjection. Our results suggest that the CRISPR-mediated KI with a homologous recombination-based donor vector during S-phase enhances the KI efficiency.
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