Insulin-like Growth Factor-I from mouse
recombinant, expressed in E. coli, lyophilized powder, cell culture tested
DOWNLOAD MSDS (PDF)Synonym: IGF-I
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MDL number MFCD00081716
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Popular Documents: Datasheet (PDF) | Specification Sheet (PDF)
Properties
| Related Categories | Cell Biology, Cell Signaling and Neuroscience, Cytokines and Growth Factors, Cytokines, Growth Factors and Chemokines for Stem Cell Differentiation, Cytokines, Growth Factors and Hormones, |
| recombinant | expressed in E. coli |
| assay | >97% (SDS-PAGE) |
| form | lyophilized powder |
| mol wt | predicted mol wt ~7.6 kDa |
| impurities | endotoxin, tested |
| suitability | cell culture tested |
| storage temp. | −20°C |
Description
Analysis Note
The biological activty is measured in a serum-free cell proliferation assay using the human breast carcinoma cell line, MCF-7.
Biochem/physiol Actions
Potent mitogenic growth factor that mediates the growth-promoting activities of growth hormone postnatally. Mouse and human IGF-I share 97% sequence identity.
IGF-1 belongs to the insulin-like growth factor (IGF; see MIM 147440) family of signaling molecules that play critical roles in cellular energy metabolism and in growth and development, especially prenatal growth.
IGF-I also known as somatomedin C, is secreted from the liver into circulation in a process regulated by pituitary growth hormone (GH) and so it mediates the growth-promoting activity of GH. In the developing embryo IGF-I is expressed primarily by mesenchymal-derived cells. After birth IGF-I expression in most extrahepatic tissues declines and hepatic expression of IGF-I becomes GH-regulated. Expression of IGF-I outside the liver is regulated differently, depending on the specific tissues. For example, gonadotropins and sex steroids regulate IGF-I expression within the reproductive system, while parathyroid hormone and sex steroids regulate IGF-I expression in bone. IGF-I is produced in several human tumors. IGF-I is mitogenic for a variety of cells including fibroblasts, osteoblasts, smooth muscle cells, fetal brain cells, neuroglial cells, and erythroid progenitor cells. IGF-I exerts its actions exclusively through the IGF-I receptor (IGF-IR). IGF-I induces endothelial cell migration and is involved in the regulation of angiogenesis.
Physical form
Lyophilized from a 0.2 μm filtered solution in phosphate buffered saline.
Price and Availability
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