Prionace glauca skin collagen bioengineered constructs as a promising approach to trigger cartilage regeneration.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Representing a strategy of marine by-products valorization, based on isolation of biocompounds and assessment of biomedical applicability, the potential of blue shark (Prionace glauca (PG)) skin collagen to induce chondrogenic differentiation of human adipose stem cells (hASC) was investigated, with and without exogenous stimulation. For that, a cryogelation method was applied to produce highly interconnected porous 3-dimensional (3D) constructs made of collagen and collagen:hyaluronic acid (20:1). In vitro studies reveal that hASC adhere abundantly to the constructs which then suggests the early chondrogenic differentiation of those cells. These findings are supported by the mRNA expression encoding chondrogenic-related markers like Coll II and Sox-9 that are markedly upregulated at an early stage for both conditions, with and without exogenous stimulation. The introduction of hyaluronic acid (Hya) seems to play a crucial role at later time points, as shown by the evident immunodetection of aggrecan (ACAN), even without exogenous stimulation. It is hypothesized that the PG collagen itself can support chondrogenic differentiation at early time points, but exogenous stimulation is required to ensure phenotype maintenance. The present work highlights the relevance of using blue shark collagen biopolymer as a building block to produce highly effective temporary matrices for cartil

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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