Gemcitabine elaidate

Gemcitabine elaidate (CP-4126) is lipophilic pro-agent of Gemcitabine. Gemcitabine elaidate is converted to Gemcitabine by esterases in order to be phosphorylated. Gemcitabine elaidate exhibits anti-tumor activity^[1][2]. In Vitro:Gemcitabine elaidate (0.2 nM-1 mM; 72 h) inhibits the growth of gemcitabine sensitive and resistant cells, with IC₅₀s of 0.0033, 16.0, 0.0042, 13.0, 0.0015, 0.03, 0.0025, 91, 0.0040, 0.0077, 0.028, and 0.088 μM for L1210/L5, L4A6, BCLO, Bara-C, C26-A, C26-G, A2780, AG6000, THX, LOX, MOLT4 and MOLT4/C8 cells, respectively^[1].
Gemcitabine elaidate (0.5 nM-1 μM; 72 h) increases S phase accumulation and dose-dependent cell kill in A549 and WiDR cells^[2].
In Vivo:Gemcitabine elaidate (25-120 mg/kg; i.p. every 3 days for 5 doses) inhibits the solid tumor xenografts growth of non-small cell lung cancer (EKVX), non-classifiable sarcoma (MHMX), fibrous histiocytoma (TAX II-1), malignant melanoma (THX), prostate cancer (CRL-1435), pancreatic cancer (PANC-1)^[1].
Gemcitabine elaidate (10-20 mg/kg; p.o. every 3 days for 5 doses) shows acceptable toxicity and significant antitumor activity in the colon cancer xenograft Co6044 bearing mice^[1].
Gemcitabine elaidate (p.o. once daily for 5 doses) shows a favorable toxicity and antitumor activity, while the dose of 15 mg/kg is highly toxic in the human colon cancer xenograft Co6044^[1].