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Hyaluronan-based hydrogel delivering glucose to mesenchymal stem cells intended to treat osteoarthritis. | LitMetric

Hyaluronan-based hydrogel delivering glucose to mesenchymal stem cells intended to treat osteoarthritis.

Int J Pharm

School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland. Electronic address:

Published: May 2024

AI Article Synopsis

  • * Researchers developed a hyaluronic acid derivative with glucose to supply energy to MSCs, enhancing their survival and effectiveness in cartilage regeneration.
  • * The hydrogel releases glucose in a controlled manner, addressing cell starvation and mortality, and has potential applications in other nutrient-deficient environments for regenerative medicine.

Article Abstract

Mesenchymal stem cell (MSC) therapy shows promise in regenerative medicine. For osteoarthritis (OA), MSCs delivered to the joint have a temporal window in which they can secrete growth factors and extracellular matrix molecules, contributing to cartilage regeneration and cell proliferation. However, upon injection in the non-vascularized joint, MSCs lacking energy supply, starve and die too quickly to efficiently deliver enough of these factors. To feed injected MSCs, we developed a hyaluronic acid (HA) derivative, where glucose is covalently bound to hyaluronic acid. To achieve this, the glucose moiety in 4-aminophenyl-β-D-glucopyranoside was linked to the HA backbone through amidation. The hydrogel was able to deliver glucose in a controlled manner using a trigger system based on hydrolysis catalyzed by endogenous ß-glucosidase. This led to glucose release from the hyaluronic acid backbone inside the cell. Indeed, our hydrogel proved to rescue starvation and cell mortality in a glucose-free medium. Our approach of adding a nutrient to the polymer backbone in hydrogels opens new avenues to deliver stem cells in poorly vascularized, nutrient-deficient environments, such as osteoarthritic joints, and for other regenerative therapies.

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Source
http://dx.doi.org/10.1016/j.ijpharm.2024.124139DOI Listing

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