Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0684249 (lung carcinoma)
 23,830 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Adozelesin (U-73975) is a potent synthetic cyclopropylpyrroloindole (CPI) analog of the cytotoxic DNA-binding antibiotic, CC-1065. In contrast to the natural product, adozelesin and related CPI analogs do not cause delayed death in non-tumored mice. Adozelesin, selected from a series of analogs for its superior in vivo antitumor activity and ease of formulation, is highly active when administered i.v. against i.p. - or s.c.- implanted murine tumors, including L1210 leukemia, B16 melanoma, M5076 sarcoma, and colon 38 carcinoma, and produces long-term survivors in mice bearing i.v.-inoculated L1210 and Lewis lung carcinoma. Modest activity is shown against the highly drug-resistant pancreas 02 carcinoma. Adozelesin is also highly effective against human tumor xenografts s.c.-implanted in athymic (nude) mice, including colon CX-1 adenocarcinoma, lung LX-1 tumor, clear cell Caki-1 carcinoma, and ovarian 2780 carcinoma. Its broad spectrum of in vivo activity compares favorably with three widely used antitumor drugs, i.e. cisplatin, cyclophosphamide, and doxorubicin. Adozelesin appears to be more effective than these drugs in the treatment of very resistant tumors such as s.c.-implanted mouse B16 melanoma, pancreatic 02 carcinoma, and human colon CX-1 and human lung LX-1 tumor xenografts. Based on its high potency and high efficacy against a broad spectrum of experimental tumors, adozelesin was chosen for clinical investigation and development.
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PMID:Adozelesin, a selected lead among cyclopropylpyrroloindole analogs of the DNA-binding antibiotic, CC-1065. 187 98

Adozelesin (Ado), a CC-1065 analog, shows significant antineoplastic activity in vivo against several types of murine tumors and human tumor xenografts. Ado is a DNA alkylating agent. One objective of this study was to investigate the cytotoxic action of Ado against the human colon (HT-29, DLD-1) and the lung (SK) carcinoma cell lines. The concentrations of Ado that produced 50% cell kill for a 4 and 24 h exposure were in the range of 0.001-0.02 ng/ml for both colon and lung carcinoma cells, indicating that this analog was a very potent cytotoxic agent. Since most clinical regimens for tumor therapy consist of several drugs, we investigated the antineoplastic action of Ado in combination with 5-aza-2'-deoxycytidine (5-Aza-CdR), a potent inhibitor of DNA methylation or cytosine arabinoside (Ara-C), a potent inhibitor of DNA synthesis. The Ado plus 5-Aza-CdR combination showed a synergistic effect on cytotoxicity of DLD-1 colon carcinoma cells for both a 6 and 24 h exposure. However, combination of Ado and Ara-C for a 6 h exposure showed an antagonistic effect, whereas a 24 h exposure showed a synergistic effect. These preclinical results provide some preliminary data on possible drugs that can be selected for use in combination with Ado in future clinical trials in patients with cancer.
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PMID:Evaluation of the antineoplastic activity of adozelesin alone and in combination with 5-aza-2'-deoxycytidine and cytosine arabinoside on DLD-1 human colon carcinoma cells. 768 64

Adozelesin, bizelesin and carzelesin are synthetic cyclopropylpyrroloindole (CPI) analogs, a class of potent antineoplastic agents modeled on the antitumor antibiotic CC-1065, that specifically bind to the minor groove of DNA and preferentially alkylate AT-rich regions. These compounds were evaluated against fresh human tumors in a human tumor colony-forming assay (HTCFA) to assess and to compare their relative antitumor spectra, concentration-response relationships and schedule-dependence. Human tumor colony-forming units were treated with adozelesin and bizelesin at concentrations of 0.02, 0.1 and 0.5 ng/ml as a continuous exposure for 14 days, and to 0.2, 1.0 and 5.0 ng/ml as a 1 h exposure. Carzelesin concentrations were 0.04, 0.2 and 1 ng/ml as a continuous exposure, and 0.6, 3.0 and 15.0 ng/ml as a 1 h exposure. A response was scored if there was 50% or less colony survival. The three analogs had similar antitumor activity against colon carcinoma, kidney carcinoma and melanoma colony-forming units. Adozelesin also displayed activity against both breast and non-small cell lung carcinoma colony-forming units, and carzelesin was active against ovarian carcinoma colony-forming units. Significantly positive concentration-response relationships were apparent with all three agents. Responses increased from below 15% at the lowest concentration to above 45% at the highest concentration for the three drugs on all schedules (p < 0.01). At the highest concentration, the overall response rate was significantly higher (p < 0.01) with carzelesin on the continuous schedule (71%) compared to the 1 h schedule (46%). However, overall response rates for adozelesin and bizelesin were similar on both schedules (1 h/continuous: adozelesin, 67/58%; bizelesin, 49/44%), indicating that adozelesin and bizelesin are less schedule dependent than carzelesin in the HTCFA. These results demonstrate that the CPIs have broad-spectrum activity against human tumor colony-forming units in the HTCFA at very low concentrations, as well as differences with regard to schedule dependence which may help guide the optimal clinical development of these agents.
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PMID:Comparative activity of the cyclopropylpyrroloindole compounds adozelesin, bizelesin and carzelesin in a human tumor colony-forming assay. 1032 36