36 results about "Endothelial Precursor Cell" patented technology

Described are methods of modulating stem / progenitor cell recruitment involving molecules that agonize the formation of plasmin stimulating the recruitment of stem / progenitor cells, including hematopoietic and endothelial precursor cells. Conversely, antagonists of plasmin can inhibit recruitment of the stem cells. In addition, the identification of the uPA receptor (uPAR) as a retention signal for stem cells in their niche suggests a novel method for increased engraftment and isolation of multipotent stem cells.

The invention provides methods of treating and preventing loss of tissue vascularization that can occur, for example, upon aging.

Disclosed are compositions and methods for preventing, treating, or reducing symptoms associated with a myocardial or related disorder such as an infarction. In one embodiment, the method includes administering a therapeutically effective amount of a nucleic acid encoding at least one morphogen; or an effective fragment thereof. Preferred morphogens include the human Sonic Hedghog (Shh), human Desert Hedgehog (Dhh), and human Indian Hedgehog (Ihh) proteins. The methods can be used alone or in combination with other methods involving administration of an angiogenic protein, hematopoietic protein, or endothelial precursor cells (EPCs).

In vitro methods are disclosed that rely on a novel phenomenon of secondary sprouting by cultured endothelial precursor cells, after angiogenic-like tube formation and collapse have occurred on a basement membrane matrix. Particularly disclosed is an in vitro method of isolating and expanding, from a mixed population of mammalian cells originating from a tissue sample, a cellular population enriched for endothelial sprout cells, including cells having one or more physiological and / or immunological features of endothelial precursor cells. Also disclosed is an in vitro method for a screening a substance for potential proangiogenic or antiangiogenic activity.

The present invention provides a method for subculturing primate embryonic stem cells, and a method for inducing differentiation of the same cell into a vascular endothelial cell and a blood cell. The present invention provides a method comprising culturing primate embryonic stem cells in a medium containing a protein component without using feeder cells and cytokines in a container coated with an extracellular matrix, detaching colonies of the resulting embryonic stem cells in the presence of a cytodetachment agent, and plating the colonies in the similar medium, and a method comprising culturing primate embryonic stem cells in a serum-containing or not containing medium in the presence of cytokine, adhesion-culturing the resulting embryoid body or embroyid body-analogous cellular aggregate in the presence of a cytokine to obtain specific precursor cells, and separating non-adherent cells and adherent cells from the specific precursor cells to obtain blood cells and vascular endothelial precursor cells.

The invention relates to a culture medium and a method for inducing pluripotent stem cells to differentiate into hematopoietic precursor cells. Specifically, the method comprises the following steps: 1) preparing hematopoietic endothelial precursor cells by a method of differentiating human pluripotent stem cells to generate the hematopoietic endothelial precursor cells; and 2) preparing the hematopoietic precursor cells by a method for promoting the hematopoietic endothelial precursor cells to differentiate into the hematopoietic precursor cells. In the preparation process, the culture medium is adopted, a random rotation mode is adopted for culture, the excellent effective efficiency is obtained, and components of the culture medium are definite.

The present invention relates to a bispecific fusion protein, comprising (a) a first polypeptide which binds to collagen, and (b) a second polypeptide which binds to endothelial precursor cells. Also, pharmaceutical compositions are disclosed, comprising the fusion protein of the invention, as well as methods for using the fusion protein, in particular for treating or preventing lesions of vessels and tissues.

Disclosed herein are tissue scaffold materials with microspheres of one density embedded in hydrogel of a different density. The disclosed materials have improved ability to facilitate cellular invasion and vascularization for wound healing and tissue regeneration. The inventors have found that materials having components with different densities promotes invasion of cells, including desirable cells such as fibroblasts and endothelial precursor cells, into the scaffold.

An isolated peptide useful as a selective antagonist of mammalian R-cadherin comprises 3 to 30 amino acid residues, three contiguous residues of the peptide having the amino acid sequence Ile-Xaa-Ser; wherein Xaa is an amino acid residue selected from the group consisting of Asp, Asn, Glu, and Gln. Preferably Xaa is Asp or Asn. In one preferred embodiment the peptide is a cyclic peptide having 3 to 10 amino acid residues arranged in a ring. The selective R-cadherin antagonist peptides of the invention are useful for inhibiting the targeting of stem cells, such as endothelial precursor cells, to developing vasculature, for inhibiting R-cadherin mediated cellular adhesion, and for inhibiting retinal angiogenesis.

The invention relates to a bispecific construct comprising a first polypeptide that binds to collagen and a second polypeptide which binds to endothelial precursor cells. The invention further relatesto the use of said fusion protein for producing a pharmaceutical composition used for treating vascular and / or tissue lesions.