Mammalian cell penetration, siRNA transfection, and DNA transfection by supercharged proteins.
Authors:McNaughton BR, Cronican JJ, Thompson DB, Liu DR,
Journal:Proc Natl Acad Sci U S A
PubMed ID:19307578
'Nucleic acid reagents, including small interfering RNA (siRNA) and plasmid DNA, are important tools for the study of mammalian cells and are promising starting points for the development of new therapeutic agents. Realizing their full potential, however, requires nucleic acid delivery reagents that are simple to prepare, effective across many ... More
Glycosylation influences the lectin activities of the macrophage mannose receptor.
Authors:Su Y, Bakker T, Harris J, Tsang C, Brown GD, Wormald MR, Gordon S, Dwek RA, Rudd PM, Martinez-Pomares L
Journal:J Biol Chem
PubMed ID:15983039
'The mannose receptor (MR) is a heavily glycosylated endocytic receptor that recognizes both mannosylated and sulfated ligands through its C-type lectin domains and cysteine-rich (CR) domain, respectively. Differential binding properties have been described for MR isolated from different sources, and we hypothesized that this could be due to altered glycosylation. ... More
Caveolin regulates endocytosis of the muscle repair protein, dysferlin.
Authors:Hernández-Deviez DJ, Howes MT, Laval SH, Bushby K, Hancock JF, Parton RG,
Journal:J Biol Chem
PubMed ID:18096699
'Dysferlin and Caveolin-3 are plasma membrane proteins associated with muscular dystrophy. Patients with mutations in the CAV3 gene show dysferlin mislocalization in muscle cells. By utilizing caveolin-null cells, expression of caveolin mutants, and different mutants of dysferlin, we have dissected the site of action of caveolin with respect to dysferlin ... More
Authors:Austin CD, Lawrence DA, Peden AA, Varfolomeev EE, Totpal K, De Mazière AM, Klumperman J, Arnott D, Pham V, Scheller RH, Ashkenazi A
Journal:Proc Natl Acad Sci U S A
PubMed ID:16801533
'Endocytosis is crucial for various aspects of cell homeostasis. Here, we show that proapoptotic death receptors (DRs) trigger selective destruction of the clathrin-dependent endocytosis machinery. DR stimulation induced rapid, caspase-mediated cleavage of key clathrin-pathway components, halting cellular uptake of the classic cargo protein transferrin. DR-proximal initiator caspases cleaved the clathrin ... More