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Establishing a Mandibular Osteosarcoma Model in SD Rats Using Tissue Block Transplantation
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Establishing a Mandibular Osteosarcoma Model in SD Rats Using Tissue Block Transplantation
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Journal Article
Establishing a Mandibular Osteosarcoma Model in SD Rats Using Tissue Block Transplantation
2024
Overview
To investigate the feasibility of establishing a mandibular osteosarcoma model in Sprague-Dawley (SD) rats using tissue block transplantation, providing a foundational model for osteosarcoma research.
Fourteen male SD rats, 3 weeks old and SPF grade, were randomly divided into a control group (n=4) and a mandibular osteosarcoma group (n=10). Using tissue block transplantation, UMR106 cell-induced tumor tissues were transplanted subcutaneously into the left mandibular marrow cavity of the SD rats. Observations included behavioral changes, weight variations, tumor growth, and tumor formation rate. Bone changes were monitored via micro-CT scanning, and histological analysis was conducted using HE staining.
Two weeks post-transplantation, the mandibular osteosarcoma group exhibited significant left facial swelling, malocclusion, eating difficulties, and weight loss compared to the control group. The tumor formation rate was 80% (8/10). Micro-CT scans indicated significant bone destruction in the osteosarcoma group. HE staining revealed high cellular atypia and pathological mitoses in both subcutaneous and mandibular osteosarcoma cells, with no notable abnormalities in lung tissues.
Tissue block transplantation is a viable method to establish a mandibular osteosarcoma model in SD rats. This method is simple, with a high tumor formation rate, providing an ideal animal model for mandibular osteosarcoma research.
Publisher
International Institute of Anticancer Research
