Introduction to Human ERBB3/HER3 HEK293T Stable Cell Line
The Human ERBB3/HER3 HEK293T Stable Cell Line is a valuable tool for studying the function and activity of the human ERBB3/HER3 protein. This stable cell line is derived from the HEK293T cell line, a widely used human embryonic kidney cell line that is known for its high transfection efficiency and ability to support the expression of a variety of proteins. The Human ERBB3/HER3 HEK293T Stable Cell Line is a genetically modified version of the HEK293T cell line that stably expresses the human ERBB3/HER3 protein, allowing for the study of its structure, activity, and potential therapeutic applications.
Structure of ERBB3/HER3 Protein
The ERBB3/HER3 protein is a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. It is composed of 1342 amino acids and contains a transmembrane domain, a cytoplasmic domain, and an extracellular domain. The extracellular domain of ERBB3/HER3 contains four cysteine-rich domains and a ligand-binding domain, while the cytoplasmic domain contains a tyrosine kinase domain and several tyrosine residues that are important for downstream signaling.
Activity of ERBB3/HER3 Protein
The activity of the ERBB3/HER3 protein is tightly regulated by its ligand, heregulin (HRG). Upon binding of HRG, ERBB3/HER3 undergoes a conformational change that allows for dimerization with other members of the EGFR family, such as ERBB2/HER2. This dimerization leads to the activation of the tyrosine kinase domain of ERBB3/HER3, resulting in the phosphorylation of tyrosine residues on both the receptor itself and its downstream signaling proteins. This phosphorylation cascade ultimately leads to the activation of various signaling pathways, such as the PI3K/AKT and MAPK/ERK pathways, which are involved in cell proliferation, survival, and differentiation.
Application of Human ERBB3/HER3 HEK293T Stable Cell Line
The Human ERBB3/HER3 HEK293T Stable Cell Line has a variety of applications in the field of cancer research. As the ERBB3/HER3 protein is known to be overexpressed in many types of cancer, this stable cell line can be used to study the role of ERBB3/HER3 in cancer development and progression. Additionally, the Human ERBB3/HER3 HEK293T Stable Cell Line can be used to screen for potential therapeutic agents that target the ERBB3/HER3 signaling pathway.
Flow Cytometry Analysis
One of the key applications of the Human ERBB3/HER3 HEK293T Stable Cell Line is flow cytometry analysis. As this cell line stably expresses the ERBB3/HER3 protein, it can be used to detect the expression level of ERBB3/HER3 on the cell surface. This is particularly useful for studying the effect of different treatments or genetic modifications on ERBB3/HER3 expression. Additionally, flow cytometry analysis can also be used to assess the binding of HRG to ERBB3/HER3 and the subsequent activation of downstream signaling pathways.
Therapeutic Target for Cancer Treatment
The overexpression of ERBB3/HER3 in cancer cells makes it an attractive therapeutic target for cancer treatment. The Human ERBB3/HER3 HEK293T Stable Cell Line can be used to screen for potential drugs or antibodies that specifically target ERBB3/HER3 and inhibit its activity.
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