Article

Implications of Adipose-Derived Stromal Cells in a 3D Culture System for Osteogenic Differentiation: An in Vitro and in Vivo Investigation

Department of Orthopaedic Surgery, University of Virginia, Box 800159, Charlottesville, VA 22908, USA. Electronic address: .
The Spine Journal (Impact Factor: 2.43). 01/2013; 13(1):32-43. DOI: 10.1016/j.spinee.2013.01.002
Source: PubMed

ABSTRACT

Healthy mammalian cells in normal tissues are organized in complex three-dimensional (3D) networks that display nutrient and signaling gradients. Conventional techniques that grow cells in a 2D monolayer fail to reproduce the environment that is observed in vivo. In recent years, 3D culture systems have been used to mimic tumor microenvironments in cancer research and to emulate embryogenesis in stem cell cultures. However, there have been no studies exploring the ability for adipose-derived stromal (ADS) cells in a 3D culture system to undergo osteogenic differentiation.

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    • "Critical size-calvarial defects are widely employed to study bone healing in animal models, mostly rodents, allowing an easy quantification of the amount of newly formed bone within a bidimensional defect [74, 108–127]. An initial proof of principle of the in vivo osteogenic potential of experimental constructs may be achieved using local intramuscular injection to induce ectopic bone formation [75, 121, 128–133]. Also, segmental defects in long bones of large animals are widely used as clinically relevant models, as resembling the fracture healing process [93, 112, 134–147]. "
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