Enhanced inhibitory effect of the matrix metalloproteinase inhibitor Ro 28-2653 in combination with estramustine and etoposide on the prostate carcinoma in the rat Dunning orthotopic tumor model

Therapeutic efficacy of the novel matrix metalloproteinase (MMP) inhibitor Ro 28-2653 has been shown in various models of different tumor entities. We hypothesized that the inhibitor effect of Ro 28-2653 on the tumor growth could be improved by combination with chemotherapeutic drugs and examined th...

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Veröffentlicht in:Cancer chemotherapy and pharmacology 2007-02, Vol.59 (2), p.275-282
Hauptverfasser: ABRAMJUK, Claudia, LEIN, Michael, ROTHAUG, Winfried, KRELL, Hans-Willi, LOENING, Stefan A, JUNG, Klaus
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container_issue 2
container_start_page 275
container_title Cancer chemotherapy and pharmacology
container_volume 59
creator ABRAMJUK, Claudia
LEIN, Michael
ROTHAUG, Winfried
KRELL, Hans-Willi
LOENING, Stefan A
JUNG, Klaus
description Therapeutic efficacy of the novel matrix metalloproteinase (MMP) inhibitor Ro 28-2653 has been shown in various models of different tumor entities. We hypothesized that the inhibitor effect of Ro 28-2653 on the tumor growth could be improved by combination with chemotherapeutic drugs and examined therefore the effect of Ro 28-2653 alone and in combination with etoposide or estramustine in the MatLyLu Dunning R-3327 rat tumor model characteristic for the androgen-independent prostate cancer (PCa). In vitro effects were estimated measuring the proliferation of MatLyLu cells incubated with the three agents alone or in combination using the XTT test. The in vivo effects of the agents alone or in combination were examined by measuring the tumor weight 18 days after tumor cell injection. The proliferation rate was only inhibited by etoposide while that effect was increased in combination with Ro 28-2653 and estramustine. Ro 28-2653 reduced the tumor weight by 86%. That effect was significantly increased in combination with etoposide to 92%. The inhibitory effect of the MMP inhibitor Ro 28-2653 on the tumor growth in the Dunning PCa model is enhanced by the standard chemotherapeutic drug etoposide. A combined application of both agents could be considered as potential tool to improve the therapy of patients with advanced PCa after failure of hormonal treatment.
doi_str_mv 10.1007/s00280-006-0269-7
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We hypothesized that the inhibitor effect of Ro 28-2653 on the tumor growth could be improved by combination with chemotherapeutic drugs and examined therefore the effect of Ro 28-2653 alone and in combination with etoposide or estramustine in the MatLyLu Dunning R-3327 rat tumor model characteristic for the androgen-independent prostate cancer (PCa). In vitro effects were estimated measuring the proliferation of MatLyLu cells incubated with the three agents alone or in combination using the XTT test. The in vivo effects of the agents alone or in combination were examined by measuring the tumor weight 18 days after tumor cell injection. The proliferation rate was only inhibited by etoposide while that effect was increased in combination with Ro 28-2653 and estramustine. Ro 28-2653 reduced the tumor weight by 86%. That effect was significantly increased in combination with etoposide to 92%. The inhibitory effect of the MMP inhibitor Ro 28-2653 on the tumor growth in the Dunning PCa model is enhanced by the standard chemotherapeutic drug etoposide. 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We hypothesized that the inhibitor effect of Ro 28-2653 on the tumor growth could be improved by combination with chemotherapeutic drugs and examined therefore the effect of Ro 28-2653 alone and in combination with etoposide or estramustine in the MatLyLu Dunning R-3327 rat tumor model characteristic for the androgen-independent prostate cancer (PCa). In vitro effects were estimated measuring the proliferation of MatLyLu cells incubated with the three agents alone or in combination using the XTT test. The in vivo effects of the agents alone or in combination were examined by measuring the tumor weight 18 days after tumor cell injection. The proliferation rate was only inhibited by etoposide while that effect was increased in combination with Ro 28-2653 and estramustine. Ro 28-2653 reduced the tumor weight by 86%. That effect was significantly increased in combination with etoposide to 92%. The inhibitory effect of the MMP inhibitor Ro 28-2653 on the tumor growth in the Dunning PCa model is enhanced by the standard chemotherapeutic drug etoposide. A combined application of both agents could be considered as potential tool to improve the therapy of patients with advanced PCa after failure of hormonal treatment.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>16758188</pmid><doi>10.1007/s00280-006-0269-7</doi><tpages>8</tpages></addata></record>
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subjects Animals
Antineoplastic agents
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
Biological and medical sciences
Body Weight - drug effects
Cell Line, Tumor
Cell Proliferation - drug effects
Disease Models, Animal
Drug Resistance, Neoplasm
Drug Screening Assays, Antitumor - methods
Drug Synergism
Estramustine - administration & dosage
Etoposide - administration & dosage
Gynecology. Andrology. Obstetrics
Humans
Injections, Intraperitoneal
Male
Male genital diseases
Medical sciences
Neoplasm Invasiveness - prevention & control
Neoplasm Transplantation
Nephrology. Urinary tract diseases
Pharmacology. Drug treatments
Piperazines - administration & dosage
Prostatic Neoplasms - drug therapy
Prostatic Neoplasms - pathology
Pyrimidines - administration & dosage
Rats
Time Factors
Tissue Inhibitor of Metalloproteinases - administration & dosage
Tumors
Tumors of the urinary system
Urinary tract. Prostate gland
title Enhanced inhibitory effect of the matrix metalloproteinase inhibitor Ro 28-2653 in combination with estramustine and etoposide on the prostate carcinoma in the rat Dunning orthotopic tumor model
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