PMID- 20461064 OWN - NLM STAT- MEDLINE DCOM- 20100930 LR - 20240324 IS - 1525-0024 (Electronic) IS - 1525-0016 (Print) IS - 1525-0016 (Linking) VI - 18 IP - 7 DP - 2010 Jul TI - Vasoactive intestinal peptide increases hepatic transduction and reduces innate immune response following administration of helper-dependent Ad. PG - 1339-45 LID - 10.1038/mt.2010.84 [doi] AB - Helper-dependent adenoviral vectors (HDAd) are effective tools for liver-directed gene therapy because they can mediate long-term transgene expression in the absence of chronic toxicity. However, high vector doses required for efficient hepatocyte transduction by intravascular delivery result in systemic vector dissemination and dose-dependent activation of the innate immunity. Therefore, strategies to achieve high-efficiency hepatocyte transduction using low vector doses and/or to reduce the acute elevations of proinflammatory cytokines and chemokines may have significant clinical potential. Vasoactive intestinal peptide (VIP) is an endogenous neuropeptide involved in the regulation of hepatic blood flow and plays an important role as modulator of immune functions. Here, we show that VIP pretreatment in mice is able to increase hepatocyte transduction by HDAd, decrease vector uptake by the spleen, reduce elevation of proinflammatory serum cytokines interleukin (IL)-6 and IL-12, and reduce serum levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) following intravenous HDAd injection. VIP pretreatment also resulted in a reduction in the expression of the chemokines macrophage-inflammatory protein 2 (MIP-2), monocyte chemotactic protein 1 (MCP-1), and regulated on activation normal T-cell expressed and secreted (RANTES) in the livers of mice injected with HDAd. These results suggest that VIP can improve the therapeutic index of HDAd by increasing hepatocyte transduction efficiency while reducing cytokine and chemokine expression following intravascular delivery of HDAd. FAU - Vetrini, Francesco AU - Vetrini F AD - Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA. FAU - Brunetti-Pierri, Nicola AU - Brunetti-Pierri N FAU - Palmer, Donna J AU - Palmer DJ FAU - Bertin, Terry AU - Bertin T FAU - Grove, Nathan C AU - Grove NC FAU - Finegold, Milton J AU - Finegold MJ FAU - Ng, Philip AU - Ng P LA - eng GR - R01 DK067324/DK/NIDDK NIH HHS/United States GR - R00 DK077447/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20100511 PL - United States TA - Mol Ther JT - Molecular therapy : the journal of the American Society of Gene Therapy JID - 100890581 RN - 0 (Cytokines) RN - 187348-17-0 (Interleukin-12) RN - 37221-79-7 (Vasoactive Intestinal Peptide) SB - IM MH - Adenoviridae/*genetics MH - Animals MH - Cytokines/metabolism MH - Genetic Vectors/*administration & dosage/genetics MH - Interleukin-12/metabolism MH - Liver/*drug effects/*metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Polymerase Chain Reaction MH - Spleen/drug effects/metabolism MH - Transduction, Genetic MH - Vasoactive Intestinal Peptide/*pharmacology PMC - PMC2911263 EDAT- 2010/05/13 06:00 MHDA- 2010/10/01 06:00 PMCR- 2011/07/01 CRDT- 2010/05/13 06:00 PHST- 2010/05/13 06:00 [entrez] PHST- 2010/05/13 06:00 [pubmed] PHST- 2010/10/01 06:00 [medline] PHST- 2011/07/01 00:00 [pmc-release] AID - S1525-0016(16)31079-6 [pii] AID - 10.1038/mt.2010.84 [doi] PST - ppublish SO - Mol Ther. 2010 Jul;18(7):1339-45. doi: 10.1038/mt.2010.84. Epub 2010 May 11.