{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T22:31:05Z","timestamp":1790375465827,"version":"4.1.0"},"reference-count":41,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2024,2,8]],"date-time":"2024-02-08T00:00:00Z","timestamp":1707350400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000308","name":"British Council Newton Fund (Newton Fund) Institutional Links","doi-asserted-by":"publisher","award":["275542783"],"award-info":[{"award-number":["275542783"]}],"id":[{"id":"10.13039\/501100000308","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000308","name":"British Council Newton Fund (Newton Fund) Institutional Links","doi-asserted-by":"publisher","award":["259-2017"],"award-info":[{"award-number":["259-2017"]}],"id":[{"id":"10.13039\/501100000308","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000308","name":"British Council Newton Fund (Newton Fund) Institutional Links","doi-asserted-by":"publisher","award":["2019-25210"],"award-info":[{"award-number":["2019-25210"]}],"id":[{"id":"10.13039\/501100000308","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Colciencias","award":["275542783"],"award-info":[{"award-number":["275542783"]}]},{"name":"Colciencias","award":["259-2017"],"award-info":[{"award-number":["259-2017"]}]},{"name":"Colciencias","award":["2019-25210"],"award-info":[{"award-number":["2019-25210"]}]},{"name":"Universidad de Antioquia","award":["275542783"],"award-info":[{"award-number":["275542783"]}]},{"name":"Universidad de Antioquia","award":["259-2017"],"award-info":[{"award-number":["259-2017"]}]},{"name":"Universidad de Antioquia","award":["2019-25210"],"award-info":[{"award-number":["2019-25210"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Osteosarcoma is a bone cancer primarily affecting teenagers. It has a poor prognosis and diminished quality of life after treatment due to chemotherapy side effects, surgical complications and post-surgical osteoporosis risks. The sulphated polysaccharide fucoidan, derived from brown algae, has been a subject of interest for its potential anti-cancer properties and its impact on bone regeneration. This study explores the influence of crude, low-molecular-weight (LMW, 10\u201350 kDa), medium-molecular-weight (MMW, 50\u2013100 kDa) and high-molecular-weight (HMW, &gt;100 kDa) fractions from Sargassum filipendula, harvested from the Colombian sea coast, as well as crude fucoidan from Fucus vesiculosus, on a specific human osteoprogenitor cell type, human embryonic-derived mesenchymal stem cells. Fourier transform infrared spectroscopy coupled with attenuated total reflection (FTIR-ATR) results showed the highest sulphation levels and lowest uronic acid content in crude extract from F. vesiculosus. There was a dose-dependent drop in focal adhesion formation, proliferation and osteogenic differentiation of cells for all fucoidan types, but the least toxicity was observed for LMW and MMW. Transmission electron microscopy (TEM), JC-1 (5,50,6,60-tetrachloro-1,10,3,30-tetraethylbenzimi-dazolylcarbocyanine iodide) staining and cytochrome c analyses confirmed mitochondrial damage, swollen ER and upregulated autophagy due to fucoidans, with the highest severity in the case of F. vesiculosus fucoidan. Stress-induced apoptosis-like cell death by F. vesiculosus fucoidan and stress-induced necrosis-like cell death by S. filipendula fucoidans were also confirmed. LMW and MMW doses of &lt;200 ng\/mL were the least toxic and showed potential osteoinductivity. This research underscores the multifaceted impact of fucoidans on osteoprogenitor cells and highlights the delicate balance between potential therapeutic benefits and the challenges involved in using fucoidans for post-surgery treatments in patients with osteosarcoma.<\/jats:p>","DOI":"10.3390\/ijms25042085","type":"journal-article","created":{"date-parts":[[2024,2,8]],"date-time":"2024-02-08T09:00:02Z","timestamp":1707382802000},"page":"2085","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["The Effects of Fucoidan Derived from Sargassum filipendula and Fucus vesiculosus on the Survival and Mineralisation of Osteogenic Progenitors"],"prefix":"10.3390","volume":"25","author":[{"given":"Dhanak","family":"Gupta","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK"},{"name":"INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield S1 3JD, UK"},{"name":"School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Edgbaston, Birmingham B5 7EG, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7450-6504","authenticated-orcid":false,"given":"Diana C.","family":"Martinez","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK"},{"name":"INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield S1 3JD, UK"},{"name":"Faculty of Material Science and Engineering, Warsaw University of Technology, Wo\u0142oska 141, 02-507 Warszawa, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9962-669X","authenticated-orcid":false,"given":"Miguel Angel","family":"Puertas-Mej\u00eda","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, UdeA, Calle 70 No. 52-21, Medell\u00edn 050010, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0838-7783","authenticated-orcid":false,"given":"Vanessa L.","family":"Hearnden","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1456-1071","authenticated-orcid":false,"given":"Gwendolen C.","family":"Reilly","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK"},{"name":"INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield S1 3JD, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Jaffe, N., Bruland, O.S., and Bielack, S. 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