What is phospho STAT3?

What is phospho STAT3?

Phosphorylated-STAT3 (p-STAT3) is the activated form of STAT3 with the ability to be detected in the process of oncogenesis.

How is STAT3 phosphorylated?

Function. STAT3 is a member of the STAT protein family. In response to cytokines and growth factors, STAT3 is phosphorylated by receptor-associated Janus kinases (JAK), forms homo- or heterodimers, and translocates to the cell nucleus where it acts as a transcription activator.

What is phospho Akt?

Phospho-Akt (Ser473) Antibody detects endogenous levels of Akt1 only when phosphorylated at Ser473. This antibody also recognizes Akt2 and Akt3 when phosphorylated at the corresponding residues.

How is STAT3 activated?

STAT3 is activated by several pro-inflammatory cytokines, including interleukin-6 (IL-6)24,25,26, which is a prime target for therapeutic intervention in several inflammatory diseases including rheumatoid arthritis, Still’s disease and giant cell arthritis.

What is Akt cell signaling?

Akt promotes cell survival by inhibiting apoptosis through phosphorylation and inactivation of several targets, including Bad (7), forkhead transcription factors (8), c-Raf (9), and caspase-9. PTEN phosphatase is a major negative regulator of the PI3 kinase/Akt signaling pathway (10).

What is Akt?

A group of enzymes involved in several processes related to cell growth and survival. Akt enzymes help to transfer signals inside cells. An Akt enzyme is a type of serine/threonine protein kinase. Also called protein kinase B.

How are antibodies purified from STAT3 transcription factor?

Antibodies are purified by protein A and peptide affinity chromatography. The Stat3 transcription factor is an important signaling molecule for many cytokines and growth factor receptors (1) and is required for murine fetal development (2).

How is STAT3 activated in tumors?

Research studies have shown that Stat3 is constitutively activated in a number of human tumors (3,4) and possesses oncogenic potential (5) and anti-apoptotic activities (3). Stat3 is activated by phosphorylation at Tyr705, which induces dimerization, nuclear translocation, and DNA binding (6,7).

What is the difference between STAT3 and stat3β?

Stat3 isoform expression appears to reflect biological function as the relative expression levels of Stat3α (86 kDa) and Stat3β (79 kDa) depend on cell type, ligand exposure, or cell maturation stage (10). It is notable that Stat3β lacks the serine phosphorylation site within the carboxy-terminal transcriptional activation domain (8).

What are the lanes of immunoprecipitation of STAT3 from HeLa cell extracts?

Immunoprecipitation of Stat3 from HeLa cell extracts using Rabbit (DA1E) mAb IgG XP ® Isotype Control #3900 (lane 2) or Stat3 (D3Z2G) Rabbit mAb (lane 3). Lane 1 is 10% input.