ITPRIPL1 Protein, Human, Recombinant (hFc) is expressed in HEK293 Cells. The accession number is Q6GPH6-1.

Human

HEK293 Cells

KIAA1754L,D1B

A DNA sequence encoding the Human ITPRIPL1 (NP_001008949.1) (His25-Gly103) was expressed with the fused Fc region of human IgG1 at the C-terminus.

≥ 95% as determined by SDS-PAGE. ≥ 95% as determined by SEC-HPLC.

Please refer to the lot-specific COA.

It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.

Inositol 1,4,5-trisphosphate Receptor Interacting Protein-Like 1 or ITPRIPL1 is a transmembrane protein with broad expression in the testis associated with immune evasion. In fact, ITPRIPL1 is a molecule specifically expressed in immune privileged tissues, “hot” tumors without PD-L1 expression, and non-responding tumors to PD-1 blockade therapy. ITPRIPL1 has been shown to impair T cell function in vitro and in vivo through CD3e with experimental evidence supporting a negative correlation between ITPRIPL1 expression level in antigen-presenting cells and T cell cytotoxicity. ITPRIPL1 was a hypermethylated-low expression gene in breast cancer and acted as an independent biomarker for the prognosis of lung adenocarcinoma by using bioinformatics methods. Thus, targeting the ITPRIPL1-CD3e axis, especially in PD-1 - PD-L1 negative patients, is a promising therapeutic strategy to reduce immune evasion.