PMID- 10072541 OWN - NLM STAT- MEDLINE DCOM- 19990414 LR - 20071115 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 162 IP - 5 DP - 1999 Mar 1 TI - IL-12 gene as a DNA vaccine adjuvant in a herpes mouse model: IL-12 enhances Th1-type CD4+ T cell-mediated protective immunity against herpes simplex virus-2 challenge. PG - 2912-21 AB - IL-12 has been shown to enhance cellular immunity in vitro and in vivo. Recent reports have suggested that combining DNA vaccine approach with immune stimulatory molecules delivered as genes may significantly enhance Ag-specific immune responses in vivo. In particular, IL-12 molecules could constitute an important addition to a herpes vaccine by amplifying specific immune responses. Here we investigate the utility of IL-12 cDNA as an adjuvant for a herpes simplex virus-2 (HSV-2) DNA vaccine in a mouse challenge model. Direct i.m. injection of IL-12 cDNA induced activation of resting immune cells in vivo. Furthermore, coinjection with IL-12 cDNA and gD DNA vaccine inhibited both systemic gD-specific Ab and local Ab levels compared with gD plasmid vaccination alone. In contrast, Th cell proliferative responses and secretion of cytokines (IL-2 and IFN-gamma) and chemokines (RANTES and macrophage inflammatory protein-1alpha) were significantly increased by IL-12 coinjection. However, the production of cytokines (IL-4 and IL-10) and chemokine (MCP-1) was inhibited by IL-12 coinjection. IL-12 coinjection with a gD DNA vaccine showed significantly better protection from lethal HSV-2 challenge compared with gD DNA vaccination alone in both inbred and outbred mice. This enhanced protection appears to be mediated by CD4+ T cells, as determined by in vivo CD4+ T cell deletion. Thus, IL-12 cDNA as a DNA vaccine adjuvant drives Ag-specific Th1 type CD4+ T cell responses that result in reduced HSV-2-derived morbidity as well as mortality. FAU - Sin, J I AU - Sin JI AD - Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA. FAU - Kim, J J AU - Kim JJ FAU - Arnold, R L AU - Arnold RL FAU - Shroff, K E AU - Shroff KE FAU - McCallus, D AU - McCallus D FAU - Pachuk, C AU - Pachuk C FAU - McElhiney, S P AU - McElhiney SP FAU - Wolf, M W AU - Wolf MW FAU - Pompa-de Bruin, S J AU - Pompa-de Bruin SJ FAU - Higgins, T J AU - Higgins TJ FAU - Ciccarelli, R B AU - Ciccarelli RB FAU - Weiner, D B AU - Weiner DB LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Antibodies, Viral) RN - 0 (Antigens, Ly) RN - 0 (Chemokine CCL5) RN - 0 (Cytokines) RN - 0 (Vaccines, DNA) RN - 0 (Viral Envelope Proteins) RN - 0 (Viral Vaccines) RN - 0 (glycoprotein D-herpes simplex virus type 2) RN - 187348-17-0 (Interleukin-12) SB - IM MH - Animals MH - Antibodies, Viral/blood MH - Antigens, Ly/analysis MH - Chemokine CCL5/biosynthesis MH - Cytokines/biosynthesis MH - Female MH - Herpesvirus 2, Human/*immunology MH - Interleukin-12/*genetics MH - Lymphocyte Activation MH - Mice MH - Mice, Inbred BALB C MH - Th1 Cells/*immunology MH - Vaccines, DNA/*immunology MH - Viral Envelope Proteins/*genetics MH - Viral Vaccines/*immunology EDAT- 1999/03/11 00:00 MHDA- 1999/03/11 00:01 CRDT- 1999/03/11 00:00 PHST- 1999/03/11 00:00 [pubmed] PHST- 1999/03/11 00:01 [medline] PHST- 1999/03/11 00:00 [entrez] PST - ppublish SO - J Immunol. 1999 Mar 1;162(5):2912-21.