PMID- 26936017 OWN - NLM STAT- MEDLINE DCOM- 20161228 LR - 20161230 IS - 1791-3004 (Electronic) IS - 1791-2997 (Linking) VI - 13 IP - 4 DP - 2016 Apr TI - Improvement of the cytotoxic T lymphocyte response against hepatocellular carcinoma by transduction of cancer cells with an adeno-associated virus carrying the interferon-gamma gene. PG - 3197-205 LID - 10.3892/mmr.2016.4884 [doi] AB - Dendritic cell (DC)-based antigen-targeted immunotherapy may offer effective adjuvant therapy for hepatocellular carcinoma (HCC), in which cytotoxic T lymphocytes (CTLs) are key. However, in a number of cases, the activity of CTLs is completely inhibited due to the downregulated expression of major human leukocyte antigen (HLA) class I molecules by HCC cells. The aim of the present study was to overcome this issue. Hep3B cells were transduced by HCC‑specific recombinant adeno‑associated virus (rAAV) carrying human alpha‑fetoprotein promoter (AFPp) and the interferon‑gamma (IFN‑gamma) gene (rAAV/AFPp‑IFN‑gamma). rAAV carrying the cytomegalovirus promoter (CMVp) and human alpha‑fetoprotein (AFP) gene (rAAV/CMVp‑AFP) was used to transduce professional antigen‑presenting DCs for the purpose of stimulating a CTL response. It was observed that transduction of DCs with rAAV/CMVp‑AFP resulted in: (i) AFP and interleukin‑12 expression; (ii) high expression levels of cluster of differentiation (CD)80, CD83, CD86, CD40, HLA‑death receptor and CD1a; (iii) T cell populations with marked IFN‑gamma expression; (iv) a high percentage of CD69+/CD8+ T cells; and (v) the activity of CTLs against HLA‑A2‑expressing Hep3B cells. The transduction of Hep3B cells with rAAV/AFPp‑IFN‑gamma resulted in: (i) IFN‑gamma expression; (ii) upregulated expression of HLA‑A2; and (iii) an improved CTL response against HLA‑A2‑deficient Hep3B cells. rAAV/CMVp‑AFP‑transduced DCs elicited an AFP‑specific and HLA‑class I‑restricted CTL response against Hep3B cells. In conclusion, it was shown that the transduction of Hep3B with rAAV/AFPp-IFN-gamma upregulated the expression of HLA-A2 and improved the sensitivity to CTL response. FAU - Zhou, Jun AU - Zhou J AD - Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China. FAU - Ma, Ping AU - Ma P AD - Department of Ophthalmology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China. FAU - Li, Jun AU - Li J AD - Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China. FAU - Cui, Xiaonan AU - Cui X AD - Department of Oncology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China. FAU - Song, Wei AU - Song W AD - Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160210 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (AFP protein, human) RN - 0 (Antigens, CD) RN - 0 (HLA-A2 Antigen) RN - 0 (alpha-Fetoproteins) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Antigens, CD/metabolism MH - Carcinoma, Hepatocellular/immunology/metabolism/pathology MH - Cell Line, Tumor MH - Dendritic Cells/cytology/immunology MH - Dependovirus/*genetics MH - Genetic Vectors/genetics/*metabolism MH - HLA-A2 Antigen/metabolism MH - Humans MH - Interferon-gamma/genetics/*metabolism MH - Liver Neoplasms/immunology/metabolism/pathology MH - Lymphocyte Activation MH - Promoter Regions, Genetic MH - T-Lymphocytes, Cytotoxic/cytology/immunology/*metabolism MH - Transduction, Genetic MH - Up-Regulation MH - alpha-Fetoproteins/genetics EDAT- 2016/03/05 06:00 MHDA- 2016/12/29 06:00 CRDT- 2016/03/04 06:00 PHST- 2015/03/06 00:00 [received] PHST- 2015/12/11 00:00 [accepted] PHST- 2016/03/04 06:00 [entrez] PHST- 2016/03/05 06:00 [pubmed] PHST- 2016/12/29 06:00 [medline] AID - 10.3892/mmr.2016.4884 [doi] PST - ppublish SO - Mol Med Rep. 2016 Apr;13(4):3197-205. doi: 10.3892/mmr.2016.4884. Epub 2016 Feb 10.