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Matrix metalloproteinase inhibitor Ro 28-2653 in combination with estramustine: tumor-reducing effects on hormone-sensitive prostate cancer in rats
Abstract
Therapeutic efficacy of the novel matrix metalloproteinase (MMP) inhibitor, Ro 28-2653 (5-biphenyl-4-yl-5-[4-(-nitro-phenyl)-piperazin-1-yl]-pyrimidine-2,4,6-trione), has been shown in various models of different tumor entities. The tumor growth-reducing effect has been demonstrated in the orthotopic rat prostate Dunning model (subline MatLyLu). Based on these results we investigated Ro 28-2653 in combination with estramustine on the G subline of the Dunning tumor. This subline is characterized by a low metastatic ability and androgen sensitivity. Efficacy was determined by recording tumor growth in vivo by magnetic resonance imaging (MRI). Tumor cells were injected into the prostates of 81 Copenhagen rats. MRI was performed at day 100 and at day 126 after tumor cell injection. The duration of therapy was 17 days with daily oral application of Ro 28-2653 (100 mg/kg) and four i.p. injections of estramustine (7.5 mg/kg). Histological evaluations were conducted to provide further information about the effects on tumor morphology. Orthotopic tumor induction was successful in 100% of the animals. Tumor volume calculations with MRI showed a significant difference between the control groups, the animals treated with Ro 28-2653, and the animals treated with the combination of Ro 28-2653 and estramustine. The new MMP inhibitor Ro 28-2653 reduces tumor growth and provides a compatible therapeutic alternative for patients with prostate cancer.
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As a hydroxamic acid-based MMP inhibitor, Ro 28-2653 may also display lower binding affinity for other MMPs, as well as for ADAM and ADAMTS metalloproteinases.
“As a hydroxamic acid-based MMP inhibitor, it may also display lower binding affinity for other MMPs, as well as for ADAM and A Disintegrin and Metalloproteinase with Thrombospondin Motifs (ADAMTS) metalloproteinases31–35.”
From MT1-MMP inhibition rejuvenates ageing brain and rescues cognitive deficits in obesity (2025) · cites this paper as [31]
Ro 28-2653 is an orally available, brain-penetrant inhibitor with high specificity for MT1-MMP, MMP2, and MMP9.
“Ro 28-2653 is an orally available, brain-penetrant inhibitor with high specificity for MT1-MMP, MMP2, and MMP9.”
From MT1-MMP inhibition rejuvenates ageing brain and rescues cognitive deficits in obesity (2025) · cites this paper as [31]
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MT1-MMP inhibition rejuvenates ageing brain and rescues cognitive deficits in obesity
Asthana, P., Li, L., Lu, L., Wu, J., Zhang, S., Li, N., Wong, S. K. K., Gurung, S., Zhang, Y., Lin, Y., et al. (2025) · Cell Discovery · doi:10.1038/s41421-025-00825-w · Cited by 4
Metadata
- Authors
- Abramjuk, C., Jung, K., Krell, H.-W., Juchem, R., Peters, R., Taymoorian, K., Staack, A., Stephan, C., Schnorr, J., Loening, S. A., & Lein, M.
- Venue
- Anti-Cancer Drugs
- Published
- 2005-09
- Volume
- 16
- Issue
- 8
- Pages
- 855-861
- ISSN
- 0959-4973
- Cited by
- 7
- References
- 0
- Language
- en
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