Novel Antitumor Indolizino[6,7-b]indoles with Multiple Modes of Action: DNA Cross-Linking and Topoisomerase I and II Inhibition
摘要:
A series of bis(hydroxymethyl)indolizino[6,7-b]indoles and their bis(alkylcarbamates) were synthesized for antitumor studies. These agents were designed as hybrid molecules of beta-carboline (topoisomerase inhibition moiety) and bis(hydroxymethyl)pyrrole (DNA cross-linking moiety). The preliminary antitumor studies indicated that these agents exhibited significant cytotoxicity against a variety of human tumor cells in vitro. Treatment of human breast carcinoma MX-1 xenograft-bearing nude mice with compounds 18b and 28c achieved more than 99% tumor remission. We also observed that 18a displayed potent therapeutic efficacy against human lung adenocarcinoma A549 and colon cancer HT 29 xenografts. These results revealed that compound 18a was more potent than irinotecan against HT 29 cells and was as potent as irinotecan against A549 cells in xenograft models. Furthermore, we demonstrated that these derivatives possess multiple modes of action, such as induction of DNA cross-linking, inhibition of topoisomerase I and II, and cell-cycle arrest at the S-phase.
Novel Antitumor Indolizino[6,7-b]indoles with Multiple Modes of Action: DNA Cross-Linking and Topoisomerase I and II Inhibition
摘要:
A series of bis(hydroxymethyl)indolizino[6,7-b]indoles and their bis(alkylcarbamates) were synthesized for antitumor studies. These agents were designed as hybrid molecules of beta-carboline (topoisomerase inhibition moiety) and bis(hydroxymethyl)pyrrole (DNA cross-linking moiety). The preliminary antitumor studies indicated that these agents exhibited significant cytotoxicity against a variety of human tumor cells in vitro. Treatment of human breast carcinoma MX-1 xenograft-bearing nude mice with compounds 18b and 28c achieved more than 99% tumor remission. We also observed that 18a displayed potent therapeutic efficacy against human lung adenocarcinoma A549 and colon cancer HT 29 xenografts. These results revealed that compound 18a was more potent than irinotecan against HT 29 cells and was as potent as irinotecan against A549 cells in xenograft models. Furthermore, we demonstrated that these derivatives possess multiple modes of action, such as induction of DNA cross-linking, inhibition of topoisomerase I and II, and cell-cycle arrest at the S-phase.
METHODS FOR TREATING SMALL CELL LUNG CANCERS BY USING PHARMACEUTICAL COMPOSITIONS OR COMBINATIONS COMPRISING INDOLIZINO[6,7-B]INDOLE DERIVATIVES
申请人:SU Tsann-Long
公开号:US20190247371A1
公开(公告)日:2019-08-15
A method for treating small cell lung cancer (SCLC). In the method, a therapeutically effective amount of a compound of Formula I:
wherein R
1
, R
2
and R
3
have the definitions disclosed in the specification is administered alone or in combination with one or more anticancer agents, or surgery, radiation therapy, chemotherapy, and/or targeted therapy.
Novel Antitumor Indolizino[6,7-<i>b</i>]indoles with Multiple Modes of Action: DNA Cross-Linking and Topoisomerase I and II Inhibition
A series of bis(hydroxymethyl)indolizino[6,7-b]indoles and their bis(alkylcarbamates) were synthesized for antitumor studies. These agents were designed as hybrid molecules of beta-carboline (topoisomerase inhibition moiety) and bis(hydroxymethyl)pyrrole (DNA cross-linking moiety). The preliminary antitumor studies indicated that these agents exhibited significant cytotoxicity against a variety of human tumor cells in vitro. Treatment of human breast carcinoma MX-1 xenograft-bearing nude mice with compounds 18b and 28c achieved more than 99% tumor remission. We also observed that 18a displayed potent therapeutic efficacy against human lung adenocarcinoma A549 and colon cancer HT 29 xenografts. These results revealed that compound 18a was more potent than irinotecan against HT 29 cells and was as potent as irinotecan against A549 cells in xenograft models. Furthermore, we demonstrated that these derivatives possess multiple modes of action, such as induction of DNA cross-linking, inhibition of topoisomerase I and II, and cell-cycle arrest at the S-phase.