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Supplementary Materials and Methods, Supplementary Tables 1 and 2, and Supplementary Figures 1 through 8 from Differential Therapeutic Effects of Anti–VEGF-A Antibody in Different Tumor Models: Implications for Choosing Appropriate Tumor Models for Drug Testing

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posted on 2023-04-03, 14:42 authored by Dror Alishekevitz, Rotem Bril, David Loven, Valeria Miller, Tali Voloshin, Svetlana Gingis-Velistki, Ella Fremder, Stefan J. Scherer, Yuval Shaked
<p>PDF - 5513KB, Supplemental Materials & Methods; Supplemental Table 1: Evaluation of MTD chemotherapy in BALB/c mice; Supplemental Table 2: Analysis of changes in the levels of pro-angiogenic cytokines in plasma of mice treated with FOLFOX chemotherapy; Supplemental Figure 1: Growth kinetics of micrometastatic lesions in the lungs of mice implanted with 4T1 or CT26 primary tumors; Supplemental Figure 2: Growth kinetics of advanced macrometastatic lesions in the lungs of mice intravenously injected with 4T1 or CT26 tumor cells; Supplemental Figure 3: The kinetics of CEP levels in the blood of mice treated with FOLFOX or GEM/CDDP; Supplemental Figure 4: Body weight in mice bearing 4T1 or CT-26 tumors following treatment with FOLFOX or GEM/CDDP with or without anti-VEGF-A antibodies; Supplemental Figure 5: The number of MDSCs colonizing 4T1 and CT26 tumors following treatment with FOLFOX or GEM/CDDP with or without anti-VEGF-A antibody; Supplemental Figure 6: Metastasis count in the lungs of mice bearing 4T1 and CT26 experimental or spontaneous metastatic models; Supplemental Figure 7: VEGF-A does not induce invasion of 4T1 and CT26 cells; Supplemental Figure 8: Anti- VEGF blocked FOLFOX-induced liver metastases in LM2-4 tumors.</p>

History

ARTICLE ABSTRACT

We previously reported that the host response to certain chemotherapies can induce primary tumor regrowth, angiogenesis, and even metastases in mice, but the possible impact of anti–VEGF-A therapy in this context has not been fully explored. We, therefore, used combinations of anti–VEGF-A with chemotherapy on various tumor models in mice, including primary tumors, experimental lung metastases, and spontaneous lung metastases of 4T1-breast and CT26-colon murine cancer cell lines. Our results show that a combined treatment with anti–VEGF-A and folinic acid/5-fluorouracil/oxaliplatin (FOLFOX) but not with anti–VEGF-A and gemcitabine/cisplatinum (Gem/CDDP) enhances the treatment outcome partly due to reduced angiogenesis, in both primary tumors and experimental lung metastases models. However, neither treatment group exhibited an improved treatment outcome in the spontaneous lung metastases model, nor were changes in endothelial cell numbers found at metastatic sites. As chemotherapy has recently been shown to induce tumor cell invasion, we tested the invasion properties of tumor cells when exposed to plasma from FOLFOX-treated mice or patients with cancer. While plasma from FOLFOX-treated mice or patients induced invasion properties of tumor cells, the combination of anti–VEGF-A and FOLFOX abrogated these effects, despite the reduced plasma VEGF-A levels detected in FOLFOX-treated mice. These results suggest that the therapeutic impact of antiangiogenic drugs varies in different tumor models, and that anti–VEGF-A therapy can block the invasion properties of tumor cells in response to chemotherapy. These results may implicate an additional therapeutic role for anti–VEGF-A when combined with chemotherapy. Mol Cancer Ther; 13(1); 202–13. ©2013 AACR.