biosights: October 28, 2013 - A framework for understanding muscle microtubules

submitted by: JCB
The microtubules of skeletal muscle fibers are arranged into an orthogonal grid, but how this network is formed is unknown. Oddoux et al. reveal that the network is built by dynamic microtubules nucleated from Golgi elements. This biosights episode presents the paper by Oddoux et al. from the October 28, 2013, issue of The Journal of Cell Biology and includes an interview with senior author Evelyn Ralston (NIH, Bethesda, MD). Produced by Caitlin Sedwick and Ben Short. See the associated...

biosights: September 30, 2013 - The nodal network

submitted by: JCB
In addition to specialized actin structures such as lamellipodia and stress fibers, cells are thought to contain a contractile actomyosin matrix that maintains cell shape. Luo et al. describe the organization and dynamics of an actomyosin network that may fulfill this function. This network is formed by actin nodes that contain the formin DAAM1 and the crosslinker filamin A, and that are connected to each other by myosin II. This biosights episode presents the paper by Luo et al. from the...

biosights: September 2, 2013 - Shrinking microtubules pull the centrosome into place

submitted by: JCB
When a T cell encounters a target antigen-presenting cell, it moves its centrosome to the immunological synapse that connects the two cells. Yi et al. reveal that centrosome repositioning is a biphasic process driven by the dynein-dependent capture and depolymerization of microtubules. This biosights episode presents the paper by Yi et al. from the September 2, 2013, issue of The Journal of Cell Biology and includes an interview with senior author John Hammer (NHLBI, Bethesda, MD). Produced...

A diet rich in high glucoraphanin broccoli interacts with genotype to reduce discordance in plasma metabolite profiles through modulating mitochondrial function

submitted by: Andrew Chapple
Background: Observational and experimental studies suggest that diets rich in cruciferous vegetables and glucosinolates may reduce the risk of cancer and cardiovascular disease (CVD). Objective: We tested the hypothesis that a 12-wk dietary intervention with high-glucoraphanin (HG) broccoli would modify biomarkers of CVD risk and plasma metabolite profiles to a greater extent than interventions with standard broccoli or peas. Design: Subjects were randomly assigned to consume 400 g...
Authors: Charlotte Armah, Maria Traka, Jack Dainty, Marianne Defernez, Astrid Janssens, Wing Leung, John Potter, Richard Mithen

David Bhella: The Peter Wildy Award Talk (MWV75)

submitted by: MicrobeWorld

David Bhella, Ph.D., MRC Centre for Virus Research, accepts the Peter Wildy Prize for Microbiology Education, awarded annually by the Society for General Microbiology for an outstanding contribution to microbiology education. Recorded live March 25, 2013 in Manchester, UK.

biosights: August 5, 2013 - Epithelia restored by healing waves

submitted by: JCB
Epithelial cells around the edge of a wound assemble an actomyosin cable that constricts to draw the wound closed, but the events that precede cable formation are largely unknown. Antunes et al. reveal that wounding induces a wave of actomyosin assembly and cell constriction that flows toward the wound edge to promote cable assembly and tissue repair. This biosights episode presents the paper by Antunes et al. from the July 22, 2013, issue of The Journal of Cell Biology and includes an...