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Autologous and Allogeneic Whole Cell Cancer Vaccine for Metastatic Tumors

ABSTRACT: This study is based on the finding that tumor cells that are grown in the laboratory can be modified in such a way that, when injected to the patient, they will stimulate his/her immune response. This approach will be evaluated in patients with melanoma and colorectal, gastric, ovarian, breast, lung and kidney epithelial cancer. Tumor cells grown in the laboratory will be modified to make them stimulatory to the immune system, irradiated to kill them, and injected to the patient eight times at two-week intervals. This protocol is expected to prolong survival of metastatic cancer patients.

DISEASE(S): Ovarian Cancer,Kidney Neoplasms,Lung Cancer,Melanoma,Gastric Cancer,Colorectal Cancer,Kidney Cancer,Breast Cancer

PROVIDER: 2058742 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:Intervention 1: Intervention group: Patients with colorectal cancer, stage 4 which receive chemotherapy and vaccine. The allogene vaccine (including three colon cancer cell lines) will be injected in two periods. The first period consists of three consecutive doses: the first dose will be injected one week after diagnosis /surgery, the following two doses will be injected with a week interval. One week after the third injection, chemotherapy will begin. After the first period, chemotherapy begins and continues for six months. The second period of the vaccine starts one month after chemotherapy and includes three consecutive vaccine doses with a distance of one week. Chemotherapy begins and continues two weeks after the sixth injection. 300 million tumor cells (108 cells from each cancer cell line) with 1 million BCG organisms are injected intradermally in the first and second injections. The third, fourth, fifth, and sixth injections contain 300 million irradiated tumor cells. Intervention 2: Control group: Patients with colorectal cancer, stage 4 which receive Chemotherapy treatment 5 weeks after diagnosis /surgery. Primary outcome(s): Measuring the levels of CA19-9. Timepoint: 6 months after the last vaccination. Method of measurement: via Elisa method.;Measuring the levels of CEA. Timepoint: 6 months after the last vaccination. Method of measurement: via Elisa method.;Measuring the levels of alanine aminotransferase. Timepoint: 6 months after the last vaccination. Method of measurement: via Elisa method.;Measuring the levels of aspartate aminotransferase. Timepoint: 6 months after the last vaccination. Method of measurement: via Elisa method.;Measuring the levels of alkaline phosphatase. Timepoint: 6 months after the last vaccination. Method of measurement: via Elisa method.;Measuring the levels of glutamyl tarnspeptidase. Timepoint: 6 months after the last vaccination. Method of measurement: via Elisa method.;Investigation of tumor formation. Timepoint: 6 months after the last vaccination. Method of measurement: via colonoscopy. Study Design: Randomization: Not randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment.

Project description:Irradiation therapy causes bone deterioration and increased risk for skeletal-related events. Irradiation interferes with trabecular architecture through increased osteoclastic activity, decreased osteoblastic activity, and increased adipocyte expansion in the bone marrow (BM), which further compounds bone-related disease. Neutralizing antibodies to sclerostin (Scl-Ab) increase bone mass and strength by increasing bone formation and reducing bone resorption. We hypothesized that treatment with Scl-Ab would attenuate the adverse effects of irradiation by increasing bone volume and decreasing BM adipose tissue (BMAT), resulting in better quality bone. In this study, 12-week-old female C57BL/6J mice were exposed to 6 Gy whole-body irradiation or were non-irradiated, then administered Scl-Ab (25 mg/kg) or vehicle weekly for 5 weeks. Femoral µCT analysis confirmed that the overall effect of IR significantly decreased trabecular bone volume/total volume (Tb.BV/TV) (2-way ANOVA, p<0.0001) with a -43.8% loss in Tb.BV/TV in the IR control group. Scl-Ab independently increased Tb.BV/TV by 3.07-fold in non-irradiated and 3.6-fold in irradiated mice (2-way ANOVA, p<0.0001). Irradiation did not affect cortical parameters, although Scl-Ab increased cortical thickness and area significantly in both irradiated and non-irradiated mice (2-way ANOVA, p<0.0001). Femoral mechanical testing confirmed Scl-Ab significantly increased bending rigidity and ultimate moment independently of irradiation (2-way ANOVA, p<0.0001). Static and dynamic histomorphometry of the femoral metaphysis revealed osteoblast vigor, not number, was significantly increased in the irradiated mice treated with Scl-Ab. Systemic alterations were assessed through serum lipidomic analysis, which showed that Scl-Ab normalized lipid profiles in the irradiated group. This data supports the theory of sclerostin as a novel contributor to the regulation of osteoblast activity after irradiation. Overall, our data support the hypothesis that Scl-Ab ameliorates the deleterious effects of whole-body irradiation on bone and adipose tissue in a mouse model. Our findings suggest that future research into localized and systemic therapies after irradiation exposure is warranted.

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Autologous and Allogeneic Whole Cell Cancer Vaccine for Metastatic Tumors

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