Abstract:
:Chemoprevention, especially through the use of naturally occurring phytochemicals capable of impeding the process of one or more steps of carcinogenesis process, is a promising approach for cancer management. Despite promising results in preclinical settings, its applicability to humans has met with limited success largely due to inefficient systemic delivery and bioavailability of promising chemopreventive agents. Here, we introduce the concept of nanochemoprevention, which uses nanotechnology for enhancing the outcome of chemoprevention. We encapsulated green tea polyphenol epigallocatechin-3-gallate (EGCG) in polylactic acid-polyethylene glycol nanoparticles and observed that encapsulated EGCG retains its biological effectiveness with over 10-fold dose advantage for exerting its proapoptotic and angiogenesis inhibitory effects, critically important determinants of chemopreventive effects of EGCG in both in vitro and in vivo systems. Thus, this study could serve as a basis for the use of nanoparticle-mediated delivery to enhance bioavailability and limit any unwanted toxicity of chemopreventive agents, such as EGCG.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Siddiqui IA,Adhami VM,Bharali DJ,Hafeez BB,Asim M,Khwaja SI,Ahmad N,Cui H,Mousa SA,Mukhtar Hdoi
10.1158/0008-5472.CAN-08-3978subject
Has Abstractpub_date
2009-03-01 00:00:00pages
1712-6issue
5eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-08-3978journal_volume
69pub_type
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