Imaging proprotein convertase activities and their regulation in the implanting mouse blastocyst
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More than forty per cent of the mammalian genome is derived from retroelements, of which about one-quarter are endogenous retroviruses (ERVs). Some are still active, notably in mice the highly polymorphic early transposon (ETn)/MusD and intracisternal A-ty ...
The fate of pluripotent cells in early mouse embryos is controlled by graded Nodal signals that are activated by the endoproteases Furin and Pace4. Soluble forms of Furin and Pace4 cleave proNodal in vitro and after secretion in transfected cells, but dire ...
Transgenic animals are essential research tools, whether to address basic biological questions or to develop preclinical models of human diseases. Their generation through the injection of naked plasmid DNA into the male pronucleus of a fertilized oocyte h ...
Human embryonic stem (hES) cells can self-renew in culture and differentiate into cells of all three germ layers. Identification of regulators of the self-renewal versus differentiation decisions in hES cells will facilitate manipulation of these cells. Se ...
During embryonic development, the extracellular matrix plays a critical role in regulating the differentiation of embryonic stem cells into specific cell lineages. MMP-sensitive PEG hydrogel is a material that has the ability to be degraded by the cells th ...
In this chapter I focus on the emergence of endoderm, the origin of these cells and their organization in space. I also discuss the molecular events that lead to endoderm formation and how endoderm can be molecularly defined. Although the molecular control ...
Nodal is a secreted protein of the transforming growth factor beta (TGFbeta) family that activates Smad2 and Smad3 transcription factors through complexes of type I and type II activin receptors and glycosyl-phosphatidylinositol-anchored coreceptors of the ...
BACKGROUND: Endoderm organ primordia become specified between gastrulation and gut tube folding in Amniotes. Although the requirement for RA signaling for the development of a few individual endoderm organs has been established a systematic assessment of i ...
A fundamental challenge in biology is to explain how progenitor cells in developing tissues acquire distinct fates according to their position. In vertebrates, the positional information that specifies the germ layers and the primary body axes is mediated ...
ACKGROUND: Animal studies have demonstrated better embryo development in vivo than in vitro. This pilot study tested the feasibility of using a novel in utero culture system (IUCS) to obtain normal human fertilization and embryo development. METHODS: The I ...
