Gemcitabine elaidate hydrochloride (Synonyms: CP-4126 hydrochloride; CO-101 hydrochloride; Gemcitabine 5'-elaidate hydrochloride)

Gemcitabine elaidate (CP-4126) hydrochloride is lipophilic pro-drug of Gemcitabine. Gemcitabine elaidate hydrochloride is converted to Gemcitabine by esterases in order to be phosphorylated. Gemcitabine elaidate hydrochloride exhibits anti-tumor activity[1][2].

Gemcitabine elaidate (0.2 nM-1 mM; 72 h) hydrochloride 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) hydrochloride increases S phase accumulation and dose-dependent cell kill in A549 and WiDR cells[2].

Gemcitabine elaidate (25-120 mg/kg; i.p. every 3 days for 5 doses) hydrochloride 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) hydrochloride 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) hydrochloride 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].

[1]. Bergman AM, et, al. Antiproliferative activity, mechanism of action and oral antitumor activity of CP-4126, a fatty acid derivative of gemcitabine, in in vitro and in vivo tumor models. Invest New Drugs. 2011 Jun;29(3):456-66.
[2]. Adema AD, et, al. Cell cycle effects of fatty acid derivatives of cytarabine, CP-4055, and of gemcitabine, CP-4126, as basis for the interaction with oxaliplatin and docetaxel. Int J Oncol. 2010 Jan;36(1):285-94.