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- W1521874623 abstract "Structured Abstract Authors – Glowacki J, Yates KE, MacLean R, Mizuno S. Objectives – Cartilage is avascular and relatively homogeneous, making it an attractive tissue for in vitro histogenesis and surgical use in patients. We developed novel platform technologies in order to define the requirements for optimal in vitro chondrogenesis by isolated cells. In this series of studies, we tested alternatives to fetal bovine serum (FBS) and the effects of growth factors on formation of cartilage in 3D porous collagen sponges. Design – We used porous collagen sponges to assess the effects of serum substitutes and exogenous TGF‐ β 1 and IL‐1 α on chondrocytes (bovine articular chondrocytes, bACs) and on chondroinduced human dermal fibroblasts (hDFs). We determined the effects of low concentrations of FBS and two serum substitutes, Nutridoma and ITS +3 , on cellularity and matrix production. After culture for intervals, sponges were harvested for histological and biochemical measurement of cartilage‐specific chondroitin 4‐sulfate proteoglycan (C 4‐S PG). Results – Cultured bACs showed equivalent growth in Nutridoma (1%) and 10% FBS. Both TGF‐ β 1 and IL‐1 α significantly stimulated accumulation of C 4‐S PG by bACs in 3D porous collagen sponges. Many endogenous growth factors were upregulated in hDFs cultured with chondroinductive DBP. Addition of TGF‐ β 1 and IL‐1 α for 11 days significantly stimulated accumulation of C 4‐S PG by hDFs cultured in DMEM with 1% Nutridoma. Conclusion – Porous collagen sponges are supportive of chondrogenesis and of chondroinduction by DBP. Optimization of serum‐free culture conditions, including growth factors, matrix components, and mechanical stimuli will expedite translation to wider clinical applications. Use of autogenous dermal fibroblasts pre‐cultured with DBP and induced to chondrocytes offers an alternative to autogenous chondrocytes." @default.
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- W1521874623 date "2005-07-15" @default.
- W1521874623 modified "2023-10-16" @default.
- W1521874623 title "In vitro engineering of cartilage: effects of serum substitutes, TGF-beta, and IL-1alpha" @default.
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- W1521874623 doi "https://doi.org/10.1111/j.1601-6343.2005.00333.x" @default.
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