Cited by 85Pancreatic function and diabetesTissue Engineering and Regenerative MedicineHydrogels: synthesis, properties, applications

Oxygen generating biomaterial improves the function and efficacy of beta cells within a macroencapsulation device

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Coronel, M.M., Liang, J.-P., Li, Y., Stabler, C.L.·2019·Biomaterials

Abstract

Tissue-engineered devices have the potential to significantly improve human health. A major impediment to the success of clinically scaled transplants, however, is insufficient oxygen transport, which leads to extensive cell death and dysfunction. To provide in situ supplementation of oxygen within a cellular implant, we developed a hydrolytically reactive oxygen generating material in the form of polydimethylsiloxane (PDMS) encapsulated solid calcium peroxide, termed OxySite. Herein, we demonstrate, for the first time, the successful implementation of this in situ oxygen-generating biomaterial to support elevated cellular function and efficacy of macroencapsulation devices for the treatment of type 1 diabetes. Under extreme hypoxic conditions, devices supplemented with OxySite exhibited substantially elevated beta cell and islet viability and function. Furthermore, the inclusion of OxySite within implanted macrodevices resulted in the significant improvement of graft efficacy and insulin production in a diabetic rodent model. Translating to human islets at elevated loading densities further validated the advantages of this material. This simple biomaterial-based approach for delivering a localized and controllable oxygen supply provides a broad and impactful platform for improving the therapeutic efficacy of cell-based approaches.

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Crossref · 10.1016/j.biomaterials.2019.04.017

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  • In both oxygen-generating examples, the oxygen generated by the device significantly enhanced the viability and function of the islets after transplantation.

    “In both these examples, the oxygen generated by the device significantly enhanced the viability and function of the islets after transplantation.”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [98]

    The Results section on the diabetic mouse model reports improved viability and insulin response in OxySite devices after transplantation, but the transplanted devices contained MIN6 beta cells, not pancreatic islets. The paper reports improved rat and human islet viability and function in vitro; it does not establish those outcomes for islets after transplantation. It also describes one oxygen-generating approach, so it cannot substantiate “both” examples on its own. (LLM, conf=0.89)

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  • Oxygen generating materials inserted alongside the islet graft improve oxygen levels at the transplantation site, and another strategy directly pumps oxygen into an encapsulation device.

    “To specifically improve oxygen levels at the transplantation site, oxygen generating materials have been inserted alongside the islet graft,96,98,99 while another strategy directly pumps oxygen into an encapsulation device92,97.”

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1 of the 61 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. [28]Papas KK, Colton CK, Nelson RA, Rozak PR, Avgoustiniatos ES, Scott WE III, Wildey GM, Pisania A, Weir GC, Hering BJ, Human Islet Oxygen Consumption Rate and DNA Measurements Predict Diabetes Reversal in Nude Mice, 7(3) (2007) 707– 713. PMC2857994 17229069
  2. [39]Shoichet MS, Li RH, White ML, Winn SR, Stability of hydrogels used in cell encapsulation: An in vitro comparison of alginate and agarose, Biotechnol Bioeng 50(4) (1996) 374– 381. 18626986
  3. [42]Colton CK, Oxygen supply to encapsulated therapeutic cells, Adv Drug Deliv Rev 67 (2014) 93– 110. 24582600

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Authors
Coronel, M. M., Liang, J.-P., Li, Y., & Stabler, C. L.
Affiliations
  • University of Florida (US)
  • University of Florida Health (US)
Corresponding author
Stabler, C.L.
Venue
Biomaterials
Publisher
Elsevier BV
Published
2019-07
Volume
210
Pages
1-11
ISSN
0142-9612 (ISSN-L)
OpenAlex
W2938362547
Cited by
85
References
61
Citations by year
2026: 6 · 2025: 10 · 2024: 13 · 2023: 16 · 2022: 14 · 2021: 12 · 2020: 8 · 2019: 6
FWCI
9.56
Type
journal article
Language
en
Open access
Locations
  • Biomaterials (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Juvenile Diabetes Research Foundation United States of America (3-SRA-2015-38-Q-R, 1F31DK097956)
  • National Institutes of Health (1F31DK097956)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
Keywords
calcium peroxide, polydimethylsiloxane encapsulation, beta-cell function, islet transplantation, type 1 diabetes, hypoxia, islet viability, insulin production, cell therapy, tissue engineering
MeSH terms
Animals, Biocompatible Materials, Cell Line, Diabetes Mellitus, Experimental, Disease Models, Animal, Graft Survival, Humans, Male, Mice, Inbred C57BL, Oxygen, Cells, Immobilized, Insulin-Secreting Cells

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