RGS20 antibodies are immunological reagents designed to target the RGS20 protein, which belongs to the RZ family of GTPase-activating proteins (GAPs). These antibodies are widely used in techniques such as Western blot (WB), immunohistochemistry (IHC), and enzyme-linked immunosorbent assay (ELISA) to study RGS20's expression and function in normal and pathological tissues .
Expression: RGS20 mRNA and protein levels are elevated in RCC tissues and cell lines (e.g., A-498, 786-O) compared to normal renal cells .
Prognostic Value: High RGS20 correlates with advanced TNM stage, lymph node metastasis, and poor survival .
Functional Impact: Knockdown of RGS20 in A-498 cells reduces proliferation, migration, and invasion while increasing apoptosis .
Oncogenic Role: RGS20 overexpression promotes cell viability, migration, and tumor growth via PI3K/AKT signaling. Depletion suppresses these effects in xenograft models .
Clinical Relevance: High RGS20 expression is linked to pelvic metastasis and shorter progression-free survival .
Mechanism: RGS20 drives proliferation by inhibiting the Hippo-PKA pathway, enhancing autophagy, and facilitating YAP nuclear translocation .
Survival: Elevated RGS20 predicts poorer 5-year survival in lung adenocarcinoma and squamous cell carcinoma .
RGS20 exerts its oncogenic effects through:
PI3K/AKT Pathway Activation: Direct interaction with PI3K p85α subunit enhances AKT signaling, promoting cell survival and metastasis .
Cell Cycle Regulation: Modulates cyclin B1, CDC20, and securin to accelerate G1/S transition .
Immune Modulation: Associates with infiltrating immune cells (e.g., activated CD4+ T cells) in tumor microenvironments .