Bioreducible polymer-conjugated oncolytic adenovirus for hepatoma-specific therapy via systemic administration
- Authors
- Kim, Pyung-Hwan; Kim, Jaesung; Kim, Tae-il; Nam, Hye Yeong; Yockman, James W.; Kim, Minjung; Kim, Sung Wan; Yun, Chae-Ok
- Issue Date
- Dec-2011
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Oncolytic adenovirus; Arginine-grafted bioreducible polymer; Chemical conjugation; Cationic polymer; Systemic delivery of Ad
- Citation
- BIOMATERIALS, v.32, no.35, pp.9328 - 9342
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIOMATERIALS
- Volume
- 32
- Number
- 35
- Start Page
- 9328
- End Page
- 9342
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/27646
- DOI
- 10.1016/j.biomaterials.2011.08.066
- ISSN
- 0142-9612
- Abstract
- Systemic administration of adenovirus (Ad) vectors is complicated by host immune responses and viral accumulation in the liver, resulting in a short circulatory virus half-life, low efficacy, and host side effects. Ad surface modification is thus required to enhance safety and therapeutic efficacy. An arginine-grafted bioreducible polymer (ABP) was chemically conjugated to the Ad surface, generating Ad-Delta E1/GFP-ABP. A hepatocellular carcinoma [HCC]-selective oncolytic Ad complex, YKL-1001-ABP, was also generated. Transduction efficiency of Ad-Delta E1/GFP-ABP was enhanced compared to naked Ad-Delta E1/GFP. YKL-1001-ABP elicited an enhanced and specific killing effect in liver cancer cells (Huh7 and HepG2) expressing alpha-fetoprotein (AFP). Compared with naked Ad, systemic administration of ABP-conjugated Ad resulted in reduced liver toxicity and interleukin (IL)-6 production in vitro and in vivo. Ad-Delta E1/GFP-ABP was more resistant to the neutralizing effects of human serum compared to naked Ad-Delta E1/GFP. ABP conjugation extended blood circulation time 45-fold and reduced anti-Ad Ab neutralization. Moreover, systemic administration of YKL-1001-ABP markedly suppressed growth of Huh7 hepatocellular carcinoma. These results demonstrate that chemical conjugation of ABP to the Ad surface improves safety and efficacy, indicating that ABP-conjugated Ad is a potentially useful cancer therapeutic agent to target cancer via systemic administration.
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