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Sulfated Alginate Reduces Pericapsular Fibrotic Overgrowth on Encapsulated CGMP-Compliant HPSC-Hepatocytes in Mice

Abstract

Intra-peritoneal placement of alginate encapsulated human induced pluripotent stem cell-derived hepatocytes (hPSC-Heps) represents a potential new bridging therapy for acute liver failure. One of the rate-limiting steps that needs to be overcome to make such a procedure more efficacious and safer is to reduce the accumulation of fibrotic tissue around the encapsulated cells to allow the free passage of relevant molecules in and out for metabolism. Novel chemical compositions of alginate afford the possibility of achieving this aim. We accordingly used sulfated alginate and demonstrated that this material reduced fibrotic overgrowth whilst not impeding the process of encapsulation nor cell function. Cumulatively, this suggests sulfated alginate could be a more suitable material to encapsulate hPSC-hepatocyte prior to human use.

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References
1.
Dhawan A, Chaijitraruch N, Fitzpatrick E, Bansal S, Filippi C, Lehec S . Alginate microencapsulated human hepatocytes for the treatment of acute liver failure in children. J Hepatol. 2019; 72(5):877-884. DOI: 10.1016/j.jhep.2019.12.002. View

2.
Weiler J, Yurt R, Fearon D, Austen K . Modulation of the formation of the amplification convertase of complement, C3b, Bb, by native and commercial heparin. J Exp Med. 1978; 147(2):409-21. PMC: 2184494. DOI: 10.1084/jem.147.2.409. View

3.
Arlov O, Ozturk E, Steinwachs M, Skjak-Braek G, Zenobi-Wong M . Biomimetic sulphated alginate hydrogels suppress IL-1β-induced inflammatory responses in human chondrocytes. Eur Cell Mater. 2017; 33:76-89. DOI: 10.22203/eCM.v033a06. View

4.
Park H, Kim J, Lee S, Yang H, Ham D, Sun C . Antifibrotic effect of rapamycin containing polyethylene glycol-coated alginate microcapsule in islet xenotransplantation. J Tissue Eng Regen Med. 2015; 11(4):1274-1284. DOI: 10.1002/term.2029. View

5.
Coron A, Kjesbu J, Kjaernsmo F, Oberholzer J, Rokstad A, Strand B . Pericapsular fibrotic overgrowth mitigated in immunocompetent mice through microbead formulations based on sulfated or intermediate G alginates. Acta Biomater. 2021; 137:172-185. DOI: 10.1016/j.actbio.2021.10.004. View