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Epidermal GF (EGF) detection service (CAT#: STEM-MB-0252-WXH)

Introduction

Epidermal growth factor (EGF) is an important cell growth factor secreted by the human body. It is abundant in human epithelial cells. Its functions include stimulating the growth of epithelial cells and endothelial cells, promoting the proliferation of epithelial cells and fibroblasts. In addition to regulating cell proliferation and differentiation, EGF, as a lung regulatory peptide, has anti-oxidant effects, and can regulate the function of airway epithelial cells through autocrine or paracrine methods. EGF can up-regulate the expression of γ-glutamyl transpeptidase, accelerate the transport of exogenous glutathione (GSH) into cells, promote the synthesis of GSH, improve the antioxidant capacity of cells, and eliminate reactive oxygen species. In addition, EGF has a significant regulatory effect on alveolar cell proliferation, and thus participates in the lung injury repair process. Moreover, EGF also has a certain regulatory effect on the reproductive system. EGF affects testicular development and spermatogenesis, regulates ovarian development, and promotes zygotic development. It can also be used as an embryonic nutrient factor to regulate early embryo development.




Principle

Epidermal growth factor receptor (EGFR) is a receptor tyrosine protein kinase, and the receptor tyrosine kinase-Ras-MAPK cascade pathway is the most important pathway for epidermal growth factor-stimulated signals to be transmitted to the nucleus. After EGF binds to the receptor, it can dimerism the receptor, thereby changing the conformation of the receptor. EGFR is enhanced the tyrosine kinase activity, and phosphorylated the tyrosine residue. The receptor forms a site that can bind to the SH2 domain-containing Grb2 protein, allowing Grb2 to bind to the receptor. There are two SH3 domains in Grb2, which can bind to guanine nucleotide release factor called SOS and change its activity. Then, SOS further activates Ras, and the activated Ras acts on the MAPK signaling pathway and activates ERK. Finally, ERK transfers into the nucleus, resulting in changes in the activity of certain transcription factors, which changes the expression status of genes and the process of cell proliferation and differentiation.

Applications

Study the growth of epithelial cells and endothelial cells.
Study the regulation of epithelial cells and endothelial cells.
Study the proliferation of epithelial cells and fibroblasts.

Procedure

1. Process samples.
2. EGF detection (Enzyme-linked immunosorbent assay (ELISA), Flow cytometry).
3. Analysis results.

Notes

Sample Types-Blood, serum, plasma, cell culture supernatant, cell lysate, cell culture medium, tissue homogenate, urine, tumor, etc.

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