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Related Experiment Video

Updated: Jun 18, 2026

Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8+ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector

Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8⁺ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector

Published on: November 28, 2018

A persistent virus vector confers superior anti-tumor immunity, compared with a non-persistent vector.

W Zhang¹, T Zhang, M-J Turk

¹Department of Microbiology and Immunology, Dartmouth Medical School, Lebanon, NH 03756, USA.

Cancer Immunology, Immunotherapy : CII

|November 19, 2009

Summary

Persistent viral vectors offer better tumor protection than acute ones. This study shows a persistent gammaherpesvirus vector outperforms a non-persistent mutant for melanoma, suggesting persistent viruses are superior for anti-tumor immunity.

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

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Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8+ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector

Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8⁺ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector

Published on: November 28, 2018

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

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

Published on: January 7, 2019

Area of Science:

Immunology
Oncology
Virology

Background:

Active vaccination using viral vectors often yields limited anti-tumor protection and requires multiple doses.
Acute viral vectors elicit strong CD8 T cell responses but may not be ideal for long-term immunity.

Purpose of the Study:

To investigate the efficacy of persistent viral vectors for anti-tumor immunity compared to acute viral vectors.
To challenge the notion that T cell exhaustion in persistent infections precludes their use in cancer vaccines.

Main Methods:

Utilized a persistent gammaherpesvirus vector and a non-persistent mutant of the same virus.
Evaluated the anti-tumor protection conferred by each vector against melanoma development.

Main Results:

The persistent gammaherpesvirus vector demonstrated superior protection against melanoma compared to the non-persistent mutant.
CD8 T cell responses in low-load persistent infections remain functional and may be advantageous for sustained anti-tumor immunity.

Conclusions:

Persistent viral vectors, particularly those derived from gammaherpesviruses, may offer enhanced and more durable anti-tumor protection than acute viral vectors.
The findings suggest a paradigm shift in viral vector vaccine design, favoring persistent viruses for improved cancer immunotherapy.