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Fabricating Tissues: Analysis of Farming Versus Engineering Strategies
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  • Fabricating Tissues: Analysis of Farming Versus Engineering Strategies
  • Fabricating Tissues: Analysis of Farming Versus Engineering Strategies
저자명
Cheema. Umber,Nazhat. Showan N.,Alp. Burcak,Foroughi. Farhad,Anandagoda. Nelomi,Mudera. Vivek,Brown. Robert A.
간행물명
Biotechnology and bioprocess engineering
권/호정보
2007년|12권 1호|pp.9-14 (6 pages)
발행정보
한국생물공학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

Tissue Engineering has expanded rapidly towards target applications of tissue repair and regeneration, whilst generating surprisingly novel models to study tissue modelling. However, clinical success in producing effective engineered tissues such as bone, skin, cartilage, and tendon, have been rare and limited. Problems tend to focus on how to stimulate the replacement of initial scaffold with mechanically functional, native extracellular matrix (principally collagen). Typical approaches have been to develop perfused and mechanically active bioreactors, with the use of native collagen itself as the initial scaffold, though the idea remains that cells do the fabrication (i.e. a cultivation process). We have developed a new, engineering approach, in which the final collagen template is fabricated without cell involvement. The first part of this biomimetic engineering involves a plastic compression of cellular native collagen gels to form dense, strong, collagenous neotissues (in minutes). Further steps can be used to orientate and increase collagen fibril diameter, again by non-cell dependent engineering. This allows operator control of cell or matrix density and material properties (influencing biological half life and fate). In addition, this (non-cultivation) approach can incorporate techniques to generate localised 3D structures and zones at a meso-scale. In conclusion, the use of biomimetic engineering based on native collagen, rather than cell-cultivation approaches for bulk matrix fabrication, produces huge benefits. These include speed of fabrication (minutes instead of weeks and months), possibility of fine control of composition and 3D nano-micro scale structure and biomimetic complexity.