TC LPA5 4

TC LPA5 4 is a LPA5 (GPR92)-specific non-lipid antagonist. TC LPA5 4 inhibits LPA-induced aggregation of isolated human platelet (LPA5-RH7777 cell line) with an IC50 of 800 nM. TC LPA5 4 displays selectivity for LPA5 over 80 other screened drug targets[1]. TC LPA5 4 inhibits cell proliferation and migration of thyroid cancer cells[2].

Research Areas >> Cancer

Signaling Pathways >> GPCR/G Protein >> LPL Receptor

TC LPA5 4 inhibits the proliferation on thyroid cancer cells CGTH-W3, TPC-1, B-CAPAP, and BHT101 significantly with IC50 at 103.0 μM, 84.9 μM, 55.9μM, and 57.17 μM. TC LPA5 4 (5 μM; 24 hours) significantly inhibits LPA-stimulated migration of CGTH-W3 and TPC-1 cells, with an inhibitory rate of ~ 30%. B-CPAP and BHT101 cells expressed higher LPAR5 mRNA. TC LPA5 4 inhibits these two cell lines’ proliferations with IC50 at 55.9μM and 57.17 μM. CGTH-W3 and TPC-1 cells expressed lower LPAR5 mRNA. TC LPA5 4 displays differential antitumor activity with IC50 at 103.0 μM and 84.9 μM[2].

TC LPA5 4 (10 mg/kg; intraperitoneal injection; 5 days/week for 2 weeks) could delay CGTH-W3 xenograft growth in nude mice[2]. Animal Model: BALB/C nu/nu mice, aged 4 5 weeks (CGTH-W3 xenografts) [2] Dosage: 10 mg/kg Administration: Intraperitoneal injection; 5 days/week for 2 weeks Result: Significantly inhibits CGTH-W3 xenograft growth with inhibitory rates of 46.7%.

[1]. Kozian DH, et al. Selective non-lipid modulator of LPA5 activity in human platelets. Bioorg Med Chem Lett. 2012;22(16):5239-5243.

[2]. Zhao WJ, et al. LPAR5 promotes thyroid carcinoma cell proliferation and migration by activating class IA PI3K catalytic subunit p110β. Cancer Sci. 2021;112(4):1624-1632.