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The role of ICP0-Null HSV-1 and interferon signaling defects in the effective treatment of breast adenocarcinoma  Jeff L. Hummel, Ekaterina Safroneeva,

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Presentation on theme: "The role of ICP0-Null HSV-1 and interferon signaling defects in the effective treatment of breast adenocarcinoma  Jeff L. Hummel, Ekaterina Safroneeva,"— Presentation transcript:

1 The role of ICP0-Null HSV-1 and interferon signaling defects in the effective treatment of breast adenocarcinoma  Jeff L. Hummel, Ekaterina Safroneeva, Karen L. Mossman  Molecular Therapy  Volume 12, Issue 6, Pages (December 2005) DOI: /j.ymthe Copyright © 2005 The American Society of Gene Therapy Terms and Conditions

2 FIG. 1 (A) In situ cytopathic effects of KM100 in human and murine breast adenocarcinomas. Indicated cells were infected with serum free medium (mock), wild-type HSV-1 (KOS), and the ICP0 mutant KM100 at an m.o.i. of ∼2. Cells were stained 24 h postinfection. (B) Kaplan–Meier survival analysis of FVB mice following intratumoral injection of subcutaneous murine PyMT breast adenocarcinoma explants. Arrows indicate time of injection (2 × 107 pfu per injection). Molecular Therapy  , DOI: ( /j.ymthe ) Copyright © 2005 The American Society of Gene Therapy Terms and Conditions

3 FIG. 2 Intergroup comparison of survival data using the log-rank test. Significance was determined as P < 0.05. Molecular Therapy  , DOI: ( /j.ymthe ) Copyright © 2005 The American Society of Gene Therapy Terms and Conditions

4 FIG. 3 Tumor regression analysis of individual mice within each treatment group. The scale of the y axis is representative of the maximum tumor growth observed. Mice exhibiting tumors that regressed over 50-fold are identified with stars. Tumor regression is shown to the point of complete regression, whereas tumor growth is shown to the point of sacrifice. Molecular Therapy  , DOI: ( /j.ymthe ) Copyright © 2005 The American Society of Gene Therapy Terms and Conditions

5 FIG. 4 Comparison of tumor regression analyses between (A) single and (B) triple treatment groups. The average fold change in tumor volume per group is represented. Significance using one-way ANOVA followed by Tukey's test was set at P < 0.05. Single dose serum-free medium (single SF) is plotted for comparison purposes. Molecular Therapy  , DOI: ( /j.ymthe ) Copyright © 2005 The American Society of Gene Therapy Terms and Conditions

6 FIG. 5 Detection of an anti-tumor immune response following KM100 treatment of PyMT tumor explants. (A) Anti-IgG1 serum levels detected by ELISA. (B) Anti-IgG1 serum levels stratified by regression status. (C) Anti-IgG2a serum levels detected by ELISA. (D) Anti-IgG2a serum levels stratified by regression status. Molecular Therapy  , DOI: ( /j.ymthe ) Copyright © 2005 The American Society of Gene Therapy Terms and Conditions


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