Abstract |
Chemotherapy in prostate cancer (CaP) even as an adjunct has not been a success. In this communication, we report the pre-clinical efficacy of a nitroacridine derivative, C-1748 (9[2'-hydroxyethylamino]-4-methyl-1-nitroacridine) in CaP cell culture and human xenograft animal models. C-1748, a DNA intercalating agent has been derived from its precursor C-857 that was a potent anti- cancer drug, but failed clinical development due to "high" systemic toxicities. Chemical modifications such as the introduction of a "methyl" group imparted novel properties, the most interesting of which is the difference in the IC(50) values between LnCaP (22.5 nM), a CaP cell line and HL-60, a leukemia cell line (>100 nM). Using gammaH2AX as an intervention marker of DNA double strand breaks, we concluded that C-1748 is more efficacious in CaP cells than in HL-60 cells. In hormone dependent cells, the androgen receptor (AR) was identified as an additional target of C-1748. In xenograft studies, administration of C-1748 intra-peritoneally inhibited tumor growth by 80-90% with minimal toxicity. These studies identify C-1748 as a novel acridine drug that has a high therapeutic index and low cytotoxicity on myelocytic cells with potential for clinical development.
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Authors | Kiranmayi Tadi, Badithe T Ashok, Yuangen Chen, Debabrata Banerjee, Barbara Wysocka-Skrzela, Jerzy Konopa, Zbigniew Darzynkiewicz, Raj K Tiwari |
Journal | Cancer biology & therapy
(Cancer Biol Ther)
Vol. 6
Issue 10
Pg. 1632-7
(Oct 2007)
ISSN: 1555-8576 [Electronic] United States |
PMID | 17921700
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- 9-(2'-hydroxyethylamino)-4-methyl-1-nitroacridine
- Androgen Receptor Antagonists
- Antineoplastic Agents
- H2AX protein, human
- Histones
- Intercalating Agents
- Nitracrine
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Topics |
- Androgen Receptor Antagonists
- Animals
- Antineoplastic Agents
(pharmacology, therapeutic use)
- Cell Line, Tumor
- Down-Regulation
- Drug Evaluation, Preclinical
- Histones
(metabolism)
- Humans
- Intercalating Agents
(pharmacology, therapeutic use)
- Male
- Mice
- Mice, Inbred BALB C
- Nitracrine
(analogs & derivatives, pharmacology, therapeutic use)
- Prostatic Neoplasms
(drug therapy, metabolism)
- Xenograft Model Antitumor Assays
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