Cell migration is a fundamental procedure involved in many physiological processes such as embryological development, tissue formation, immune defense or inflammation, and cancer progression. Here, we provide four in vitro assays that describe step-by-step cell adhesion, migration and invasion strategies, and their corresponding image data quantification. These methods include the following: two-dimensional wound healing assays, two-dimensional individual cell-tracking experiments by live cell imaging, and three-dimensional spreading and transwell assays. These optimized assays will facilitate physiological and cellular characterization of cell adhesion and motility, which may be used for fast screening of specific therapeutic drugs for adhesion function, novel strategies in pathophysiological diagnosis, and assaying new molecules involved in migration and invasion metastatic properties of cancer cells.
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http://dx.doi.org/10.1007/978-1-0716-3052-5_20 | DOI Listing |
Nanoscale Adv
January 2025
Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology Kattankulathur Tamil Nadu 603203 India
Bone remodeling, a continuous process of resorption and formation, is essential for maintaining skeletal integrity and mineral balance. However, in cases of critical bone defects where the natural bone remodeling capacity is insufficient, medical intervention is necessary. Traditional bone grafts have limitations such as donor site morbidity and availability, driving the search for bioengineered scaffold alternatives.
View Article and Find Full Text PDFExtracell Vesicle
December 2024
The Jared Grantham Kidney Institute at the University of Kansas Medical Center, Department of Nephrology and Hypertension, University of Kansas Medical Center, Kansas City, KS 66160, USA.
Autosomal dominant polycystic kidney (ADPKD) disease is the commonest genetic cause of kidney failure (affecting 1:800 individuals) and is due to heterozygous germline mutations in either of two genes, and . Homozygous germline mutations in are responsible for autosomal recessive polycystic kidney (ARPKD) disease a rare (1:20,000) but severe neonatal disease. The products of these three genes, (polycystin-1 (PC1 4302(3)aa)), (polycystin-2 (PC2 968aa)) and (fibrocystin (4074aa)) are all present on extracellular vesicles (EVs) termed, PKD-exosome-like vesicles (PKD-ELVs).
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
CIC nanoGUNE, Donostia-San Sebastián 20018, Spain.
Inspired by the properties of natural chitin, the present work provides the first solid foundation for growing conformal ultrathin antibacterial films of organic chitin through a solvent-free molecular layer deposition (MLD) process. This work establishes the initial groundwork for growing biomimetic hybrid cuticles by combining sugar-type molecules with vapor-phase metal-organic precursors, which we term metallochitins or, more generally, metallosaccharides. The MLD process, featuring mild temperatures and solvent-free conditions, provides exceptional conformality and thickness precision, ensuring highly conformal coatings on diverse high aspect ratio substrates.
View Article and Find Full Text PDFJ Nanobiotechnology
January 2025
Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Extracellular vesicles (EVs) are taken up by most cells, however specific or preferential cell targeting remains a hurdle. This study aims to develop an EV that targets cells involved in inflammation, specifically those expressing intercellular adhesion molecule-1 (ICAM-1). To target these cells, we overexpress the ICAM-1 binding receptor "lymphocyte function-associated antigen-1" (LFA-1) in HEK293F cells, by sequential transfection of plasmids of the two LFA-1 subunits, ITGAL and ITGB2 (CD11a and CD18).
View Article and Find Full Text PDFNat Commun
January 2025
Institut Curie, Université PSL, Sorbonne Université, CNRS UMR168, Laboratoire Physico-Chimie Curie, 75005, Paris, France.
Integrin clusters facilitate mechanical force transmission (mechanotransduction) and regulate biochemical signaling during cell adhesion. However, most studies have focused on rigid substrates. On fluid substrates like supported lipid bilayers (SLBs), integrin ligands are mobile, and adhesive complexes are traditionally thought unable to anchor for cell spreading.
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