A 3-Dimensional Biomimetic Platform to Interrogate the Safety of Autologous Fat Transfer in the Setting of Breast Cancer

Annals of Plastic Surgery
Yoshiko ToyodaJason A Spector

Abstract

Obesity is a known risk factor for the development and prognosis of breast cancer. Adipocytes have been identified as a source of exogenous lipids in other cancer types and may similarly provide energy to fuel malignant survival and growth in breast cancer. This relationship is of particular relevance to plastic surgery, because many reconstructions after oncologic mastectomy achieve optimal aesthetics and durability using adjunctive autologous fat transfer (AFT). Despite the increasing ubiquity and promise of AFT, many unanswered questions remain, including safety in the setting of breast cancer. Clinical studies to examine this question are underway, but an in vitro system is critical to elucidate the complex interplay between the cells that normally reside at the surgical recipient site. To study these interactions and characterize possible lipid transfer between adipocytes to breast cancer cells, we designed a 3-dimensional in vitro model using primary patient-derived tissues. Breast adipose tissue was acquired from patients undergoing breast reduction surgery. The tissue was enzymatically digested and sorted to retrieve adipocytes and adipose stromal cells. Polydimethylsiloxane wells were filled with type I collagen-encaps...Continue Reading

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