PI3K/AKT Pathway Antibody Sampler Kit - #KF2036
产品描述
货号 | 产品 | 规格 | 来源 | 应用 | 反应 | 文献引用 |
---|---|---|---|---|---|---|
AF6241 | PI3K p85 alpha Ab | 20ul | Rabbit | WB,IHC,IF/ICC | Hm,Ms,Rt | 115 |
AF3242 | P-PI3K p85 (Tyr458)/p55 (Tyr199) Ab | 20ul | Rabbit | WB,IHC,IF/ICC | Hm,Ms,Rt,Mk | 100 |
AF6261 | pan-AKT1/2/3 Ab | 20ul | Rabbit | WB,IHC,IF/ICC,IP | Hm,Ms,Rt,Mk | 219 |
AF0016 | P-AKT1/2/3 (Ser473) Ab | 20ul | Rabbit | WB,IHC,IF/ICC | Hm,Ms,Rt,Mk | 329 |
AF5447 | PTEN Ab | 20ul | Rabbit | WB,IHC | Hm,Ms,Rt | 15 |
AF3018 | P-PDPK1 (Ser241) Ab | 20ul | Rabbit | WB,IHC | Hm,Ms,Rt | 2 |
AF6018 | PDPK1 Ab | 20ul | Rabbit | WB,IHC,IF/ICC | Hm,Ms,Rt | 0 |
AF5112 | PI3 kinase P110 alpha Ab | 20ul | Rabbit | WB,IHC,IF/ICC | Hm,Ms,Rt | 10 |
AF7018 | beta Actin Ab | 20ul | Rabbit | WB,IHC,IF/ICC | Hm,Ms,Rt,Pg,Zf,Bv,Rb,Dg,Mk,Fs | 718 |
S0001 | Goat Anti-Rabbit IgG HRP | 100ul | Goat | WB,IHC,ELISA | Rb | 455 |
Activation of Receptor Tyrosine Kinases (RTKs): The pathway is often initiated by the binding of growth factors, cytokines, or other extracellular signals to their respective receptor tyrosine kinases on the cell surface. This binding causes the receptors to dimerize and autophosphorylate, activating their intrinsic kinase activity.
Recruitment of PI3K: The activated receptor tyrosine kinases recruit the p85 regulatory subunit of PI3K to the cell membrane through interactions with phosphorylated tyrosine residues.
Conversion of PIP2 to PIP3: The p110 catalytic subunit of PI3K phosphorylates phosphatidylinositol-4,5-bisphosphate (PIP2) to produce phosphatidylinositol-3,4,5-trisphosphate (PIP3).
Activation of Akt: PIP3 acts as a second messenger and recruits the protein kinase Akt (also known as PKB) to the membrane. Akt is then activated through phosphorylation by phosphoinositide-dependent kinase-1 (PDK1) at a threonine residue and by the mammalian target of rapamycin complex 2 (mTORC2) at a serine residue.
Downstream Effects: Once activated, Akt phosphorylates a wide range of substrates involved in various cellular processes. For example:
- Cell survival: Akt can inhibit the pro-apoptotic protein Bad and promote the expression of anti-apoptotic proteins like Bcl-2 and Bcl-xL.
- Cell cycle progression: Akt can promote cell cycle entry and progression by regulating the activities of cyclin D1, p21, and p27.
- Metabolism: Akt plays a role in glucose uptake and glycogen synthesis, partly through its effects on glycogen synthase kinase-3 (GSK-3) and the mammalian target of rapamycin (mTOR) pathway.
- Angiogenesis and invasion: Akt can promote the formation of new blood vessels and cell invasion, processes important for tumor growth and metastasis.
Negative Regulation: The pathway is tightly regulated by negative feedback loops and by the action of phosphatases such as PTEN (phosphatase and tensin homolog), which dephosphorylates PIP3 back to PIP2, thereby reducing Akt activation.
Pathological Significance: Dysregulation of the PI3K/Akt pathway is implicated in various diseases, including cancer, where it can contribute to tumorigenesis, resistance to apoptosis, and resistance to therapeutic agents. It is also implicated in metabolic disorders like diabetes.
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