Authors:Keren K, Yam PT, Kinkhabwala A, Mogilner A, Theriot JA,
Journal:Nat Cell Biol
PubMed ID:19767741
'Cytosolic fluid dynamics have been implicated in cell motility because of the hydrodynamic forces they induce and because of their influence on transport of components of the actin machinery to the leading edge. To investigate the existence and the direction of fluid flow in rapidly moving cells, we introduced inert ... More
A novel method to allow noninvasive, longitudinal imaging of the murine immune system in vivo.
Authors:Gibson VB, Benson RA, Bryson KJ, McInnes IB, Rush CM, Grassia G, Maffia P, Jenkinson EJ, White AJ, Anderson G, Brewer JM, Garside P,
Journal:Blood
PubMed ID:22271449
'In vivo imaging has revolutionized understanding of the spatiotemporal complexity that subserves the generation of successful effector and regulatory immune responses. Until now, invasive surgery has been required for microscopic access to lymph nodes (LNs), making repeated imaging of the same animal impractical and potentially affecting lymphocyte behavior. To allow ... More
Variables influencing interactions of untargeted quantum dot nanoparticles with skin cells and identification of biochemical modulators.
Authors:Ryman-Rasmussen JP, Riviere JE, Monteiro-Riviere NA
Journal:Nano Lett
PubMed ID:17408303
Skin cells (NHEK) take up untargeted quantum dots (QD) with surface polyethylene glycol (PEG), amines, and carboxylic acids, but the mechanisms are unknown. Time courses of QD-NHEK interactions were determined and effects of QD surface coating, temperature, culture medium supplements and inhibitors of the cell cycle and endocytosis identified. The ... More
Granule exocytosis is required for platelet spreading: differential sorting of a-granules expressing VAMP-7.
Authors:Peters CG, Michelson AD, Flaumenhaft R,
Journal:Blood
PubMed ID:22589474
There has been recent controversy as to whether platelet a-granules represent a single granule population or are composed of different subpopulations that serve discrete functions. To address this question, we evaluated the localization of vesicle-associated membrane proteins (VAMPs) in spread platelets to determine whether platelets actively sort a specific subpopulation ... More
Surface coatings determine cytotoxicity and irritation potential of quantum dot nanoparticles in epidermal keratinocytes.
Authors:Ryman-Rasmussen JP, Riviere JE, Monteiro-Riviere NA
Journal:J Invest Dermatol
PubMed ID:16902417
Quantum dot (QD) nanoparticles have potential applications in nanomedicine as drug delivery vectors and diagnostic agents, but the skin toxicity and irritation potential of QDs are unknown. Human epidermal keratinocytes (HEKs) were used to assess if QDs with different surface coatings would cause differential effects on HEK cytotoxicity, proinflammatory cytokine ... More