Role in Gliomas: Elevated PLCG1 expression correlates with tumor progression and poor survival in IDH wild-type lower-grade gliomas (LGGs). Knockdown of PLCG1 via siRNA inhibits proliferation and invasion in LGG cell lines, validated using PLCG1 antibodies in Western blotting and immunohistochemistry (IHC) .
Therapeutic Target: Preclinical studies demonstrate that PLCG1-targeted drugs (e.g., U73122) suppress tumor growth in vitro and in vivo, highlighting its potential as a therapeutic target .
T Cell Activation: PLCG1 promotes phase separation of LAT (linker for activation of T cells) clusters, enhancing TCR signaling efficiency. This mechanism was elucidated using PLCG1 antibodies in fluorescence recovery after photobleaching (FRAP) assays .
Western Blot: Detects endogenous PLCG1 at ~148 kDa in human cell lines (HeLa, Hep G2, 293T) with a recommended dilution range of 1:500–1:2000 .
Phosphorylation Detection: Recognizes PLCG1 phosphorylated at Tyr783 (a critical activation site) in A431 and NIH-3T3 cell lines .
Validated in formalin-fixed paraffin-embedded (FFPE) human liver tissues, showing robust staining in cytoplasm and membrane compartments .
PLCG1 amplifies signaling by hydrolyzing PIP₂ to generate IP₃ and DAG, driving calcium release and protein kinase C activation .
In T cells, PLCG1 stabilizes LAT clusters via SH2 domain interactions, protecting them from phosphatase-mediated dephosphorylation .
Cancer: PLCG1 overexpression is linked to poor prognosis in gliomas, breast cancer, and autoimmune disorders .
Neurological Disorders: Dysregulated PLCG1 activity contributes to aberrant synaptic signaling in Alzheimer’s disease models .