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Grant of the Month | March 2006

    Home Grant of the Month Grant of the Month 2006 Grant of the Month | March 2006

    Grant of the Month | March 2006

    By The McGowan Institute For Regenerative Medicine | Grant of the Month 2006, Grant of the Month | 0 comment | 1 March, 2006 | 0

    PI J. Peter Rubin, MD; Kacey Marra, PhD; Albert Donnenberg, PhD; Vera Donnenberg, PhD; Stephen Badylak, DVM, PhD, MD
    Title Injectable Engineered Tissue for Cancer Reconstruction

    Summary Breast cancer is endemic in the United States, with nearly 216,000 new cases expected this year (American Cancer Society statistics). For patients undergoing mastectomy, the loss of one or both breasts can cause significant discomfort and psychosocial distress.

    The number of breast reconstruction operations exceeds 80,000 cases per year (American Society of Plastic Surgeons statistics). Current surgical options, including autologous tissue flaps and implants, have significant problems. The use of adipose precursor cells, or preadipocytes, may represent a better solution for soft tissue reconstruction for cancer defects.

    The study will test the hypothesis that human preadipocytes can be seeded on microcarrier scaffolds and be injected into an animal model to produce a durable engineered soft tissue replacement.

    Furthermore, the research team speculates that the preadipocytes will differentiate into both adipocytes and elements of the new vascular system that perfuses the fat tissue.

    The specific aims of this study are to:

    • Characterize cell surface markers of human preadipocytes using flow cytometry and assess the variability of differentiation of cloned subpopulations. Preadipocytes will be isolated from adipose tissue of breast cancer patients for clinical relevance.
    • Evaluate the adherence, proliferation and adipogenic differentiation of human preadipocytes within macroporous collagenous beads and small intestinal submucosa (SIS) microparticles in culture.
    • Determine the ability of human preadipocytes to generate mature adipose tissue when seeded in collagen and SIS particles and injected subcutaneously into a nude mouse.

    Source RO1: NCI, along with NIBIBRO1: NCI, along with NIBIB

    Term 3 years

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