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Regulation of Apoptosis and Differentiation by p53 in Human ...

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CHAPTER 1: Introduction<br />

Cardiomyocytes H9.2 Evaluation <strong>of</strong> ultrastructural <strong>and</strong> proliferative<br />

characteristics<br />

Cardiomyocytes H9.2 Evaluation <strong>of</strong> electrophysiological <strong>and</strong><br />

pharmacological properties<br />

Cardiomyocytes H1 Demonstration <strong>of</strong> functional <strong>in</strong>tegration after<br />

transplantation <strong>in</strong>to gu<strong>in</strong>ea pig model<br />

Hematopoietic H1, H1.1, <strong>Differentiation</strong> <strong>of</strong> multipotent hematopoietic<br />

colony-form<strong>in</strong>g H9.2 precursors<br />

cells<br />

Hematopoietic H1, H9 <strong>Differentiation</strong> <strong>of</strong> multipotent CD45 +<br />

progenitor cells<br />

hematopoietic precursors<br />

Hematopoietic H1, H9 <strong>Differentiation</strong> <strong>of</strong> multipotent CD34 +<br />

progenitor cells<br />

Hemangioblasts H1, H7,<br />

H9, MA01,<br />

MA03,<br />

MA40 <strong>and</strong><br />

MA09)<br />

hematopoietic precursors<br />

<strong>Differentiation</strong> <strong>in</strong>to multiple hematopoietic<br />

l<strong>in</strong>eages <strong>and</strong> endothelial cells.<br />

Transplantation <strong>in</strong>to rats <strong>and</strong> mice <strong>in</strong>jured<br />

models, result<strong>in</strong>g <strong>in</strong> vascular repair<br />

Leucocytes H1 <strong>Differentiation</strong> <strong>in</strong>to antige-present<strong>in</strong>g<br />

leucocytes<br />

Endothelial cells H9 Isolation <strong>and</strong> characterization <strong>of</strong> hESCderived<br />

endothelial cells<br />

Endothelial H1, H9 Identification <strong>of</strong> primitive endothelial-like<br />

cells that generate endothelial <strong>and</strong><br />

hematopoietic cells<br />

Endothelial H9.2 Evaluation <strong>of</strong> endothelial markers dur<strong>in</strong>g<br />

spontaneous differentiation<br />

Vasculogenesis H9.2, Vasculogenesis us<strong>in</strong>g alg<strong>in</strong>ate scaffold<strong>in</strong>g<br />

H13<br />

Vasculogenesis H9.2, Vasculogenesis <strong>in</strong> teratomas<br />

H13, I6<br />

Extraembryonic<br />

Trophoblast H1, H7,<br />

H9, H14<br />

<strong>Differentiation</strong> <strong>in</strong>to trophoblasts<br />

(Snir et al.,<br />

2003)<br />

(Sat<strong>in</strong> et al.,<br />

2004)<br />

(Xue et al.,<br />

2005)<br />

(Kaufman et<br />

al., 2001)<br />

(Chadwick et<br />

al., 2003)<br />

(Vodyanik et<br />

al., 2005)<br />

(Lu et al.,<br />

2007)<br />

(Zhan et al.,<br />

2004)<br />

(Levenberg et<br />

al., 2002)<br />

(Wang et al.,<br />

2004)<br />

(Gerecht-Nir<br />

et al., 2005)<br />

(Gerecht-Nir<br />

et al., 2004b)<br />

(Gerecht-Nir<br />

et al., 2004a)<br />

(Xu et al.,<br />

2002c)<br />

Trophoblast H1 Identification <strong>of</strong> trophoblast cells <strong>in</strong> EB (Gerami-Na<strong>in</strong>i<br />

et al., 2004)<br />

Germ cells<br />

Germ cells<br />

HSF-1,<br />

HSF-6,<br />

H9<br />

Spontaneous differentiation <strong>of</strong> stem cells<br />

(Clark et al.,<br />

2004)<br />

As seen from studies above, hESC have been vigorously <strong>in</strong>vestigated as a source for cell<br />

replacement therapies, <strong>and</strong> it is apparent that they can differentiate <strong>in</strong>to a wide range <strong>of</strong> specific<br />

cell types. In order to deliver on their promise, large amounts <strong>of</strong> high quality hESC will be needed<br />

that are genetically stable, free <strong>of</strong> animal products <strong>and</strong> manipulated to evade the immune system<br />

through either somatic cell nuclear transfer or other technologies. A deeper underst<strong>and</strong><strong>in</strong>g <strong>of</strong> the<br />

molecular mechanisms that control the genetic stability <strong>of</strong> hESC is required.<br />

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