The effectiveness of the oncolytic activity induced by Ad5/F35 adenoviral vector is dependent on the cumulative cellular conditions of survival and autophagy.

Abstract:

:To overcome the poor tumor transduction efficiency of adenovirus serotype 5 (Ad5) observed in several types of cancer, the fiber region of Ad5, apart from its tail, was replaced by adenovirus serotype 35 (Ad35). The chimeric Ad5/F35 adenoviral vector did not exhibit any significant enhancement of transduction efficiency. CD46, a receptor for Ad35, was expressed in relatively small amounts in most of the cancer cells examined. Therefore, we investigated the pivotal factor(s) that render cancer cells susceptible to transduction. We discovered that the tumor transduction efficiency of Ad5/F35 was enhanced in the presence of rapamycin, an autophagy inducer, in some cancer cells. Analysis of survival potential and cell proliferation rates revealed that Ad5/F35 exerted a more pronounced oncolytic effect in cancer cells with higher survival potential in the presence of rapamycin.

journal_name

Int J Oncol

authors

Kim SY,Kang S,Song JJ,Kim JH

doi

10.3892/ijo.2013.1812

subject

Has Abstract

pub_date

2013-04-01 00:00:00

pages

1337-48

issue

4

eissn

1019-6439

issn

1791-2423

journal_volume

42

pub_type

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