Virotherapy Based on Oncolytic Adenovirus

A Special Issue of Microorganisms (ISSN 2076-2607) belonging to the section "Virology".

Deadline for manuscript submissions: closed (31 July 2026) | Viewed by 233

Editors


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Guest Editor
University of Missouri, Columbia, MO, USA
Interests: microbial based immunotherapies; cancer immunology and imaging
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
University of Missouri, Columbia, MO, USA
Interests: microbiology; host-pathogen interactions; microbial-based cancer therapy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Oncolytic virus-based therapy consists of genetically modified viruses that selectively infect, replicate within, and kill cancer cells while leaving normal cells unharmed and triggering an anti-tumor immune response. To date, multiple oncolytic viruses are being tested preclinically and clinically. One of them is T-VEC, a herpes simplex virus approved for injection directly into tumors in melanoma patients. Among all oncolytic viruses, oncolytic adenovirus (OAd) is the most widely tested vector due to its many advantages. This makes OAd an excellent virotherapy agent for targeting not only direct tumor lysis but also immunotherapy. Therefore, in this Special Issue, we invite you to submit research articles, review articles, and short communications that showcase current research in the area of “Virotherapy Based on Oncolytic Adenovirus,” including, but not limited to, virus engineering, combination therapy, immunotherapy, overcoming OAd limitations, etc.

Dr. Jorge G. Gomez-Gutierrez
Dr. Paul De Figueiredo
Guest Editors

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Keywords

  • cancer
  • oncolytic
  • adenovirus
  • virotherapy
  • immunotherapy
  • combined therapy

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Published Papers (1 paper)

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Review

19 pages, 2717 KB  
Review
Virotherapy for Spinal and Spinal Cord Tumors: Current Evidence and Future Perspectives
by Koji Uotani, Tomohiro Fujiwara, Ryo Takatori, Kazutaka Yamashita, Kenzaburo Matsumoto, Yoshiaki Oda, Kensuke Shinohara, Hiroshi Tazawa, Toshiyoshi Fujiwara and Toshifumi Ozaki
Microorganisms 2026, 14(9), 2110; https://doi.org/10.3390/microorganisms14092110 - 21 Sep 2026
Abstract
Tumors of the spine and spinal cord, including primary and metastatic vertebral tumors, intramedullary gliomas, and refractory intradural lesions, are challenging to treat because curative local therapy is limited by the eloquent, nonregenerating neural tissue surrounding them. Oncolytic virotherapy may offer a rational [...] Read more.
Tumors of the spine and spinal cord, including primary and metastatic vertebral tumors, intramedullary gliomas, and refractory intradural lesions, are challenging to treat because curative local therapy is limited by the eloquent, nonregenerating neural tissue surrounding them. Oncolytic virotherapy may offer a rational alternative by combining tumor-selective oncolysis with the induction of systemic antitumor immunity, while sparing normal neural cells. This review summarizes the current field of oncolytic viruses, including adenovirus, herpes simplex virus, reovirus, and others, in the context of spinal and spinal cord tumors. Clinical data in the spine remain scarce; however, the rationale is based on histological evidence from sarcomas and other tumors, extensive glioma experience, including diffuse intrinsic pontine glioma, and preclinical activity in nerve sheath and meningioma models. We discuss the telomerase-specific oncolytic adenovirus OBP-301 and its derivatives, whose hTERT-driven replication provides histology-agnostic tumor selectivity, while sparing the telomerase-silent spinal cord. This telomerase dependence, however, limits activity against tumors that maintain telomeres through the alternative lengthening of telomeres (ALT) pathway, such as many osteosarcomas and some spinal cord astrocytomas. We also discuss delivery and safety within the confined spinal canal, combination strategies, and future directions, such as extracellular vesicle-mediated delivery and biomarker-guided patient selection. Although clinical translation to the spine will require dedicated preclinical and early-phase studies, virotherapy represents a promising, mechanistically grounded modality for these therapeutically challenging tumors. Full article
(This article belongs to the Special Issue Virotherapy Based on Oncolytic Adenovirus)
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