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Inhibition of Prostate Cancer Cell Growth by 3ʹ, 4ʹ, 5ʹ-Trimethoxyflavonol (TMFol)

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posted on 2015-05-07, 10:20 authored by C. U. F. Kelly Hill, Shaban E. A. Saad, Robert G. Britton, Andreas J. Gescher, Stewart Sale, Karen Brown, Lynne M. Howells
Purpose TMFol (3ʹ, 4ʹ, 5ʹ-trimethoxyflavonol) is a synthetic analogue of the naturally occurring flavonols fisetin and quercetin, which have been considered of potential usefulness in the management of prostate cancer. We investigated whether TMFol may have preclinical features superior to those of its two flavonol congeners. Methods The ability of the three flavonols to compromise prostate cancer cell survival was tested in four prostate cancer cell types 22Rv1, TRAMP C2, PC-3 and LNCaP. The effect of TMFol on prostate cancer development in vivo was investigated in nude mice bearing the 22Rv1 or TRAMP C2 tumours. Results TMFol inhibited cell growth in vitro in all four prostate cancer cell types more potently than fisetin and quercetin. It also interfered with TRAMP C2 tumour development in vivo, whilst fisetin and quercetin at equivalent doses were without activity in this model. Likewise, TMFol slowed the growth of the 22Rv1 tumour in vivo. Efficacy in either model was accompanied by induction of apoptosis, although in vitro only TRAMP C2 cells, but not 22Rv1, underwent apoptosis when exposed to TMFol. Conclusions The results support the notion that among the three congeneric flavonols, quercetin, fisetin and TMFol the latter may be the most suitable candidate agent for potential development in prostate cancer management.

Funding

Grant G2009-25 from Prostate Cancer UK, Cancer Research UK programme grant C325/A13101 and the Leicester Experimental Cancer Medicines Centre (C325/A15575) and PhD studentship bursaries from the Commonwealth Scholarship Commission in the UK (to CUFKH) and the Libyan Office for Cultural Affairs (to SEAS)

History

Citation

Cancer Chemotherapy and Pharmacology

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/School of Medicine/Department of Cancer Studies and Molecular Medicine

Version

  • AM (Accepted Manuscript)

Published in

Cancer Chemotherapy and Pharmacology

Publisher

Springer Verlag (Germany)

issn

0344-5704

eissn

1432-0843

Copyright date

1007

Available date

2016-05-29

Publisher version

http://link.springer.com/article/10.1007/s00280-015-2771-2

Editors

Newell, H.

Language

en

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