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Updated: Aug 16, 2026

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
12:42

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo

Published on: January 7, 2019

Apoptotic Macrophage-Derived Vesicles Loaded with Oncolytic Virus for Tumor Therapy

Zhangquan Wang1, Zhuo Yan2, Mingming Tan1

  • 1Emergency Department, Department of Clinical Medical Laboratory Center, Tiantai People's Hospital of Zhejiang Province, Taizhou, 317200, People's Republic of China.

Cancer Management and Research
|August 15, 2026
PubMed
Abstract

Insights

Apoptotic vesicles effectively deliver oncolytic adenovirus, enhancing cancer cell killing. This novel delivery system shows promise for improving cancer immunotherapy by overcoming viral defense mechanisms.

Area of Science:

  • Oncology
  • Immunotherapy
  • Virology

Background:

  • Oncolytic viruses (OVs) are a promising cancer immunotherapy, but clinical use is limited by immune defenses and poor tumor penetration.
  • Effective delivery of OVs to tumor sites remains a significant challenge in cancer treatment.

Purpose of the Study:

  • To develop and evaluate apoptotic vesicles as a delivery platform for oncolytic adenovirus.
  • To assess the enhanced anti-tumor efficacy of oncolytic adenovirus encapsulated in apoptotic vesicles.

Main Methods:

  • Apoptotic vesicles were generated from RAW264.7 macrophage cells.
  • Oncolytic adenovirus was loaded into vesicles using a repeated extrusion method.
  • Viral loading efficiency and in vitro cytotoxicity were evaluated.

Main Results:

  • Apoptotic vesicles successfully encapsulated oncolytic adenovirus with 84.8% loading efficiency.
  • The resulting EV@OA complex demonstrated significantly enhanced cytotoxicity against tumor cells compared to free virus.
  • This indicates improved anti-tumor activity through targeted delivery.

Conclusions:

  • Apoptotic macrophage-derived vesicles are an effective platform for oncolytic adenovirus delivery.
  • This approach enhances anti-tumor efficacy in vitro, suggesting potential for improved cancer immunotherapy.
  • Further in vivo studies are necessary to validate these findings.
Keywords:
apoptotic macrophagecancer immunotherapyextracellular vesiclesoncolytic viruses

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