Abstract:
:Bacteria-based anticancer therapies aim to overcome the limitations of current cancer therapy by actively targeting and efficiently removing cancer. To achieve this goal, new approaches that target and maintain bacterial drugs at sufficient concentrations during the therapeutic window are essential. Here, we examined the tumor tropism of attenuated Salmonella typhimurium displaying the RGD peptide sequence (ACDCRGDCFCG) on the external loop of outer membrane protein A (OmpA). RGD-displaying Salmonella strongly bound to cancer cells overexpressing αvβ3, but weakly bound to αvβ3-negative cancer cells, suggesting the feasibility of displaying a preferential homing peptide on the bacterial surface. In vivo studies revealed that RGD-displaying Salmonellae showed strong targeting efficiency, resulting in the regression in αvβ3-overexpressing cancer xenografts, and prolonged survival of mouse models of human breast cancer (MDA-MB-231) and human melanoma (MDA-MB-435). Thus, surface engineering of Salmonellae to display RGD peptides increases both their targeting efficiency and therapeutic effect.
journal_name
Theranosticsjournal_title
Theranosticsauthors
Park SH,Zheng JH,Nguyen VH,Jiang SN,Kim DY,Szardenings M,Min JH,Hong Y,Choy HE,Min JJdoi
10.7150/thno.16135subject
Has Abstractpub_date
2016-06-20 00:00:00pages
1672-82issue
10issn
1838-7640pii
thnov06p1672journal_volume
6pub_type
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