PMID- 33039456 OWN - NLM STAT- MEDLINE DCOM- 20210416 LR - 20240226 IS - 1096-0007 (Electronic) IS - 0014-4835 (Linking) VI - 202 DP - 2021 Jan TI - Macrophage polarization contributes to the efficacy of an oncolytic HSV-1 targeting human uveal melanoma in a murine xenograft model. PG - 108285 LID - S0014-4835(20)30543-1 [pii] LID - 10.1016/j.exer.2020.108285 [doi] AB - Uveal melanoma (UM), the most common primary malignant tumor of the eye in adults, is difficult-to-treat. UM has a relatively high mortality secondary to distant metastasis and poor overall survival with existing therapies. The oncolytic virus herpes simplex virus type-1 (HSV-1) has been approved for clinical use in melanoma. This double-stranded DNA virus was suspected to directly activate lysis specifically in neoplastic cells. We tested the antitumor efficacy of recombinant oncolytic HSV-1-EGFP (oHSV-EGFP) in UM and characterized the local and systemic antitumor innate immune response in a murine xenograft model. We first determined the efficacy of the oncolytic virus in 92.1, MUM2B and MP41 cell lines. In murine xenograft models, oHSV-EGFP reduced intraocular tumors as well as systemic subcutaneous tumors. A significant change in cytokines was observed in viral infected cells, especially a rise in IFNgamma. In vivo analyses showed increased anti-tumorigenic M1 macrophages and decreased pro-tumorigenic M2 macrophages in peripheral blood, and intraocular and distant tumors after intravitreal viral treatment. Increased infiltration of natural killer cells and mature dendritic cells was also detected after viral treatment. In addition, no virus was detected in major organs after the treatment. Our data support that oHSV-EGFP is effective, neoplasm specific, immune active and safe, providing possible clinical translatable options to treat ocular and metastatic UM. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Liu, Sisi AU - Liu S AD - Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China. FAU - Zhang, Junwen AU - Zhang J AD - Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China. FAU - Fang, Sheng AU - Fang S AD - Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China. FAU - Zhang, Qing AU - Zhang Q AD - Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China. FAU - Zhu, Guidong AU - Zhu G AD - Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China. FAU - Tian, Yifu AU - Tian Y AD - Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China. FAU - Zhao, Mingwei AU - Zhao M AD - Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China. Electronic address: mingwei_zhao@outlook.com. FAU - Liu, Fusheng AU - Liu F AD - Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China. Electronic address: liufusheng@ccmu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201009 PL - England TA - Exp Eye Res JT - Experimental eye research JID - 0370707 RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - Uveal melanoma SB - IM MH - Animals MH - Blotting, Western MH - Cell Line, Tumor MH - Cell Survival MH - *Disease Models, Animal MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Flow Cytometry MH - Green Fluorescent Proteins/*physiology MH - Herpesvirus 1, Human/*physiology MH - Heterografts MH - Humans MH - Macrophage Activation/*physiology MH - Melanoma/metabolism/pathology/*therapy/virology MH - Mice, Inbred BALB C MH - Microscopy, Fluorescence MH - *Oncolytic Virotherapy MH - Oncolytic Viruses/*physiology MH - Real-Time Polymerase Chain Reaction MH - Uveal Neoplasms/metabolism/pathology/*therapy/virology MH - Mice OTO - NOTNLM OT - HSV-1 OT - IFNgamma OT - Macrophage OT - Metastases OT - Oncolytic virus OT - Polarization OT - Uveal melanoma EDAT- 2020/10/12 06:00 MHDA- 2021/04/17 06:00 CRDT- 2020/10/11 20:23 PHST- 2020/03/22 00:00 [received] PHST- 2020/09/04 00:00 [revised] PHST- 2020/09/29 00:00 [accepted] PHST- 2020/10/12 06:00 [pubmed] PHST- 2021/04/17 06:00 [medline] PHST- 2020/10/11 20:23 [entrez] AID - S0014-4835(20)30543-1 [pii] AID - 10.1016/j.exer.2020.108285 [doi] PST - ppublish SO - Exp Eye Res. 2021 Jan;202:108285. doi: 10.1016/j.exer.2020.108285. Epub 2020 Oct 9.