PMID- 22576690 OWN - NLM STAT- MEDLINE DCOM- 20120831 LR - 20120511 IS - 1791-2423 (Electronic) IS - 1019-6439 (Linking) VI - 41 IP - 1 DP - 2012 Jul TI - Pharmacokinetics, pharmacodynamics and metabolism of a novel anticancer agent for prostate cancer. PG - 337-44 LID - 10.3892/ijo.2012.1442 [doi] AB - The objective of these studies was to examine the murine pharmacokinetics, pharmacodynamics and metabolism of (3-(1H-indol-2-yl)phenyl)(1H-indol-2-yl)methanone (Indole 15), a novel tubulin inhibitor for the treatment of cancer. We developed HPLC and LC/MS/MS assays to quantitate Indole 15 and characterize its metabolites in vivo. Pharmacokinetic studies were performed after intravenous (IV), oral (PO) and subcutaneous (SC) administration of 10 mg/kg doses to male ICR mice. Urine and fecal samples were also collected over a 72-h period to identify metabolites. Pharmacodynamic studies were conducted by monitoring the tumor size change during a period of two weeks in PC-3 tumor bearing mice after daily IV administration of Indole 15 at doses of 0, 10, 50, 100 and 150 mg/kg. The pooled plasma concentration data after administration via different dose routes was simultaneously fitted by a two-compartmental model. Indole 15 was moderately well absorbed after PO and SC administration, with a bioavailable fraction of 0.27 and 0.72, respectively. The steady state volume distribution (Vss) and clearance (CL) were estimated to be 7.0 l/kg and 4.36 l/h/kg, respectively. The mean data of PC-3 tumor growth in mice was fitted well by a transduction model using fixed plasma pharmacokinetics as a driving function. Analysis of the metabolites in mice indicated that the compound undergoes extensive oxidative metabolism with subsequent sulfation. These studies demonstrate that favorable pharmacokinetic and pharmacodynamic properties of Indole 15 offer hope for achieving pharmacological activity in early clinical trials. FAU - Yang, Jun AU - Yang J AD - Division of Pharmaceutics, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA. FAU - Ahn, Sunjoo AU - Ahn S FAU - Wu, Zengru AU - Wu Z FAU - Hwang, Dong-Jin AU - Hwang DJ FAU - Miller, Duane D AU - Miller DD FAU - Dalton, James T AU - Dalton JT LA - eng GR - R01 DK065227-01/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20120420 PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 ((3-(1H-indol-2-yl)phenyl)(1H-indol-2-yl)methanone) RN - 0 (Antineoplastic Agents) RN - 0 (Indoles) RN - 0 (Tubulin Modulators) SB - IM MH - Animals MH - Antineoplastic Agents/administration & dosage/metabolism/*pharmacokinetics MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Drug Stability MH - Half-Life MH - Indoles/administration & dosage/metabolism/*pharmacokinetics MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred ICR MH - Microsomes, Liver/metabolism MH - Prostatic Neoplasms/*drug therapy/pathology MH - Tissue Distribution MH - Tubulin Modulators/administration & dosage/metabolism/*pharmacokinetics MH - Tumor Burden/drug effects MH - Xenograft Model Antitumor Assays EDAT- 2012/05/12 06:00 MHDA- 2012/09/01 06:00 CRDT- 2012/05/12 06:00 PHST- 2012/02/17 00:00 [received] PHST- 2012/03/29 00:00 [accepted] PHST- 2012/05/12 06:00 [entrez] PHST- 2012/05/12 06:00 [pubmed] PHST- 2012/09/01 06:00 [medline] AID - 10.3892/ijo.2012.1442 [doi] PST - ppublish SO - Int J Oncol. 2012 Jul;41(1):337-44. doi: 10.3892/ijo.2012.1442. Epub 2012 Apr 20.