Focal adhesions (FAs) control cell shape and motility, which are important processes that underlie a wide range of physiological functions. FA dynamics is regulated by cytoskeleton, motor proteins and small GTPases. Kinectin is an integral endoplasmic reticulum (ER) membrane protein that extends the ER along microtubules. Here, we investigated the influence of the ER on FA dynamics within the cellular lamella by disrupting the kinectin-kinesin interaction by overexpressing the minimal kinectin-kinesin interaction domain on kinectin in cells. This perturbation resulted in a morphological change to a rounded cell shape and reduced cell spreading and migration. Immunofluorescence and live-cell imaging demonstrated a kinectin-dependent ER extension into the cellular lamella and ER colocalisation with FAs within the cellular lamella. FRAP experiments showed that ER contact with FAs was accompanied with an increase in FA protein recruitment to FAs. Disruption of the kinectin-kinesin interaction caused a reduction in FA protein recruitment to FAs. This suggests that the ER supports FA growth within the cellular lamella. Microtubule targeting to FAs is known to promote adhesion disassembly; however, ER contact increased FA size even in the presence of microtubules. Our results suggest a scenario whereby kinectin-kinesin interaction facilitates ER transport along microtubules to support FA growth.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3705938 | PMC |
| http://dx.doi.org/10.1242/jcs.069153 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Pilot Case Series on the Use of a Large Mushroom-Shaped Corneal Graft for the Surgical Management of Post-Penetrating Keratoplasty Ectasia and Endothelial Failure.
J Clin Med
January 2025
Eye Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, 25123 Brescia, Italy.
: The aim of this study was to evaluate the effect of a surgical technique for managing post-penetrating keratoplasty (PK) ectasia complicated by late endothelial failure (LEF). : A single-center pilot case series was conducted regarding consecutive patients affected by post-PK ectasia with late graft failure. Using a microkeratome, a single donor cornea was dissected to prepare a two-piece graft, comprising a larger anterior lamella made up of anterior stroma and a smaller posterior lamella made up of posterior stroma, Descemet's membrane, and endothelium.
View Article and Find Full Text PDFOlfactory Impairment and Recovery in Zebrafish () Following Cadmium Exposure.
Biology (Basel)
January 2025
Department of Biology, University of Naples Federico II, 80125 Naples, Italy.
Anthropic activities have significantly elevated cadmium levels, making it a significant stressor in aquatic ecosystems. Present in high concentrations across water bodies, cadmium is known to bioaccumulate and biomagnify throughout the food chain. While the toxic effects of cadmium on the organs and tissues of aquatic species are well-documented, little is known about its impact on sensory systems crucial for survival.
View Article and Find Full Text PDFExploring Disparities in Gill Physiological Responses to NaHCO-Induced Habitat Stress in Triploid and Diploid Crucian Carp (): A Comprehensive Investigation Through Multi-Omics and Biochemical Analyses.
Metabolites
December 2024
Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin), Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences, Ministry of Agriculture and Rural Areas, Harbin 150070, China.
: Owing to the progressive rise in saline waters globally, resulting in detrimental impacts on freshwater aquaculture, the underlying molecular distinctions governing the response to alkaline stress between diploid and triploid crucian carp remain unknown. : This investigation explores the effects of 20 and 60 mmol NaHCO stress over 30 days on the gills of diploid and triploid crucian carp, employing histological, biochemical, and multi-omic analyses. : Findings reveal structural damage to gill lamellas in the examined tissue.
View Article and Find Full Text PDFEffects of the 2022 Oder River environmental disaster on fish gill structure.
Dis Aquat Organ
January 2025
Department of Hydrobiology, Ichthyology and Biotechnology of Reproduction, West Pomeranian University of Technology in Szczecin, Kazimierza Królewicza 4, 71-550 Szczecin, Poland.
The 2022 Oder River disaster was one of the most significant harmful events in recent European river history, with an estimated 60% reduction in fish biomass in the lower section of the river. While the prevailing hypothesis attributes associated fish kills to toxins from golden algae Prymnesium parvum, our histopathological study on the gills of 2 common cyprinid fish species, namely vimba bream Vimba vimba (L.) and roach Rutilus rutilus (L.
View Article and Find Full Text PDFIntroducing subgen. a new and very small lineage sharing with () an identical, largely circum-Pacific distribution pattern.
Fungal Syst Evol
December 2024
CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, P. R. Chin.
The application of DNA data on a worldwide sampling has revolutionized the infrageneric classification of the highly diverse ectomycorrhizal genus . Based on collections made in New Zealand, East Asia and North America, this study describes a new subgenus , the ninth subgenus of . Even though BLASTn of the ITS sequences suggested affinities with species of subgenera and the phylogenetic analysis based on a five-locus DNA dataset placed the target samples in an independent major clade that is taxonomically equivalent to subgenus.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!