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About: Seema Grewal

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In Development this week (Vol. 137, Issue 21)

Posted by on October 12th, 2010

Here are the research highlights from the current issue of Development: Oct1: essential for trophoblast development Most POU family transcription factors are temporally and spatially restricted during development and play pivotal roles in specific cell fate determination events. Oct1 (Pou2f1), however, is ubiquitously expressed in embryonic and adult mouse tissues; so, does Oct1 have a[…]

In Development this week (Vol 137, Issue 20)

Posted by on September 28th, 2010

A fateful look at early mouse lineage specification The first cell lineages specified in the mouse embryo are the trophectoderm (TE), which generates the embryonic portion of the placenta, and the inner cell mass (ICM). The ICM subsequently forms the pluripotent epiblast (EPI, which produces the embryo) and the primitive endoderm (PrE, which generates other[…]

In Development this week (Vol 137, Issue 19)

Posted by on September 7th, 2010

Here are the research highlights from the current issue of Development: Nr5a receptors reset EpiSC pluripotency Rodent embryonic stem (ES) cells that are derived from blastocysts self-renew without mitogenic growth factors and robustly colonize chimaeras, whereas egg cylinder-derived stem cells (EpiSCs) require fibroblast growth factor and contribute poorly to chimaeras. Nevertheless, expression of a single[…]

In Development this week (Volume 137, Issue 18)

Posted by on August 24th, 2010

Non-muscle myosin II translates cilia polarity In the brain, cilia on the multiciliated ependymal cells that line the brain ventricles circulate cerebrospinal fluid over the brain surface. To generate this directional fluid flow, the ependymal cell cilia and their basal bodies must be orientated in one direction. This ‘rotational’ polarity is regulated by the planar[…]

In the new issue of Development, 137 (17)…

Posted by on August 10th, 2010

The Bicoid gradient, epigenetic control of BMP signalling, haematopoietic stem cells and more…here are the highlights from the current issue of Development: The Bicoid gradient gets into shape without nuclei Morphogen gradients provide key positional information during embryogenesis but how they are established is not well understood. A gradient of the transcription factor Bicoid is[…]

In Development this week (Volume 137, Issue 16)

Posted by on July 27th, 2010

Here are the highlights from this week’s issue of Development: Lymphatic networks follow arterial lead The vertebrate lymphatic system consists of lymphatic vessels, which collect fluid from the tissues and return it to the blood, and lymph nodes, which are involved in immune defence. Lymphatic vessels, like blood vessels, form a complex vascular network, but what guides the development of[…]

In Development this week (Volume 137, Issue 15)

Posted by on July 13th, 2010

Here are the research highlights from the new issue of Development… TORc1-ing about stem cell differentiation In adult tissues, the tight regulation of stem cell selfrenewal and differentiation maintains tissue homeostasis. In Drosophila ovaries, BMP signalling from the local environment maintains germline stem cells (GSCs) by repressing bam (a differentiation-promoting gene) expression. Now, on p.[…]

In Development, Vol 137 (Issue 14)

Posted by on June 23rd, 2010

Here are the research highlights from the current issue of Development. You can find these on the Development site but we thought it would be useful to have them posted on the Node, too. Brainy signals for actin dynamics During brain development, neurite outgrowth and neuronal migration establish the brain architecture needed for brain function.[…]