MWV Episode 68 - Threading the NEIDL: TWiV Goes Inside a BSL-4

submitted by: MicrobeWorld
Constructed in 2009 in the highly populated South End neighborhood of Boston, Massachusetts, the National Emerging Infectious Diseases Laboratories (NEIDL) facility contains labs that operate at biosafety levels 2, 3 and 4. Due to its location the NEIDL has faced a raft of legal and regulatory hurdles that have prevented BSL-3 and BSL-4 labs from becoming functional. "Threading the NEIDL," is a 1-hour documentary narrated by Vincent Racaniello, PhD, Higgins Professor of Microbiology &...

biosights: February 18, 2013 - Erecting a myosin scaffold for cytokinesis

submitted by: JCB
Cell division requires the coordinated action of proteins that promote actomyosin contraction, membrane trafficking, and extracellular matrix remodeling. Wloka et al. reveal that, in budding yeast, the type II myosin Myo1 acts as an immobile scaffold at the bud neck to organize proteins involved in forming the primary septum during cytokinesis. This biosights episode presents the paper by Wloka et al. from the February 4, 2013, issue of The Journal of Cell Biology and includes an interview...

biosights: January 21, 2013 - How cell shape changes unfold

submitted by: JCB
Under certain conditions, cells form protrusions that oscillate rapidly around the cell periphery. Kapustina et al. reveal that these oscillatory protrusions, which may be related to processes involved in amoeboid cell migration, are driven by the cyclic folding and unfolding of the plasma membrane and its underlying actin cortex. This biosights episode presents the paper by Kapustina et al. from the January 7, 2013, issue of The Journal of Cell Biology and includes an interview with lead...

Around the Nucleus

submitted by: ahernk

This video is a surreal presentation of a Metabolic Melody by Kevin Ahern ( for more info). The tune is The Beatle's "Across the Universe." The lyrics and video are by Kevin Ahern and the recording is by David Simmons

Endothelin-1 is a transcriptional target of p53 in epidermal keratinocytes and regulates UV induced melanocyte homeostasis

submitted by: arup.indra
Keratinocytes contribute to melanocyte activity by influencing their microenvironment, in part, through secretion of paracrine factors. Here we discovered that p53 directly regulates Edn1 expression in epidermal keratinocytes and controls UV-induced melanocyte homeostasis. Selective ablation of EDN1 in murine epidermis (EDN1ep-/-) does not alter melanocyte homeostasis in newborn skin but decreases dermal melanocytes in adult skin. Results showed that keratinocytic EDN1 in a non-cell...
Authors: Daniel J. Coleman, Gitali Ganguli-Indra, Stephen Hyter, Arup Indra, Steven Ma, Gary F. Merrill, Masashi Yanagisawa

Systems as the Driver for Synthetic Biology

submitted by: RASEIBoulder
We now possess the ability to read and write DNA. These tools are not only revolutionizing biotechnology but also the basic life sciences as well. The challenge is that we are still learning the grammar. In other words, we often do not know which genetic perturbations to make in order to alter the behavior of an organism. As a result, synthetic biology still involves much trial and error. Moreover, we are still far from the point where we can engineer new organisms from scratch – rather,...