An Innovative Arteriovenous (AV) Loop Breast Cancer Model Tailored for Cancer Research

Bioengineering (Basel). 2022 Jun 27;9(7):280. doi: 10.3390/bioengineering9070280.

Abstract

Animal models are important tools to investigate the pathogenesis and develop treatment strategies for breast cancer in humans. In this study, we developed a new three-dimensional in vivo arteriovenous loop model of human breast cancer with the aid of biodegradable materials, including fibrin, alginate, and polycaprolactone. We examined the in vivo effects of various matrices on the growth of breast cancer cells by imaging and immunohistochemistry evaluation. Our findings clearly demonstrate that vascularized breast cancer microtissues could be engineered and recapitulate the in vivo situation and tumor-stromal interaction within an isolated environment in an in vivo organism. Alginate-fibrin hybrid matrices were considered as a highly powerful material for breast tumor engineering based on its stability and biocompatibility. We propose that the novel tumor model may not only serve as an invaluable platform for analyzing and understanding the molecular mechanisms and pattern of oncologic diseases, but also be tailored for individual therapy via transplantation of breast cancer patient-derived tumors.

Keywords: animal model; arteriovenous loop; breast cancer.

Grants and funding

This research was supported by the National Natural Science Foundation of China (Grant no. 81901977). The study was further funded in part by the Forschungsstiftung Medizin, University of Erlangen-Nürnberg, Germany and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Projektnummer 326998133—TRR 225 (subprojects C03, B01, A01). Fibrinogen and thrombin were provided by Baxter Deutschland GmbH based on a material transfer agreement. We acknowledge financial support by Deutsche Forschungsgemeinschaft and Friedrich-Alexander-Universität Erlangen-Nürnberg within the funding programme “Open Access Publication Funding“.