다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Cartilage regeneration and repair remain a clinical challenge due to the limited capability of cartilage to self-regenerate. Worldwide, the costs associated with cartilage regeneration per patient are estimated on average £30 000 for producing and supplying cells. Regenerative approaches may include the use of cell therapies and tissue engineering by combining relevant cells, scaffolds and instructive biomolecules to stimulate or modulate cartilage repair. Hydrogels have been of great interest within these fields to be used as 3D substrates to cultivate and grow cartilage cells. Currently, biomimetic hydrogels with adequate biological and physicochemical properties, such as mechanical properties, capable of supporting load-bearing capability, are yet to succeed. In this review, biomaterials’ advantages and disadvantages for the manufacturing of biomimetic hydrogels for cartilage regeneration are presented. Different studies on the formulation of cartilage-like hydrogels based on materials such as gelatin, chondroitin sulfate, hyaluronic acid and polyethylene glycol are summarised and contrasted in terms of their mechanical properties (e.g. elastic modulus) and ability to enhance cell function such as cell viability and GAG content. Current limitations and challenges of biomimetic hydrogels for cartilage regeneration are also presented.

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Biomimetic hydrogels designed for cartilage tissue engineering

Chitosan hydrogel/3D-printed poly(ε-caprolactone) hybrid scaffold containing synovial mesenchymal stem cells for cartilage regeneration based on tetrahedral framework nucleic acid recruitment.

van Gastel, N., Stegen, S., Eelen, G., Schoors, S., Carlier, A., Daniels, V. W., Baryawno, N., Przybylski, D., Depypere, M., Stiers, P-J., Lambrechts, D., Van Looveren, R., Torrekens, S., Sharda, A., Agostinis, P., Lambrechts, D., Maes, F., Swinnen, J., Geris, L., ... Carmeliet, G. (2020). Lipid availability determines fate of skeletal progenitor cells via SOX9. Nature, 579(7797), 111-117. https://doi.org/10.1038/s41586-0202050-1

/pdf/lipid-availability-determines-fate-of-skeletal-progenitor-4u58oloeoy.pdf

Lipid availability determines fate of skeletal progenitor cells via SOX9

The invention discloses a cartilage composite scaffold and a preparation method thereof. The cartilage composite scaffold comprises a scaffold and growth factors, wherein the scaffold comprises a decalcified cancellous bone and a substrate material cross-linked and compounded in pores of the decalcified cancellous bone; the scaffold is a three-dimensional porous structure body; and the growth factors are immobilized in the scaffold through the affinity with the substrate material.

Cangjian Gao

Papers

Cartilage composite scaffold and preparation method thereof