{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T21:59:46Z","timestamp":1784152786856,"version":"3.55.0"},"reference-count":85,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2024,4,26]],"date-time":"2024-04-26T00:00:00Z","timestamp":1714089600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"United States (U.S.) Army Engineer Research and Development Center\u2013Environmental Laboratory (ERDC-EL)","award":["W912HZ-23-2-0024"],"award-info":[{"award-number":["W912HZ-23-2-0024"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Despite the promising applications of the use of quantum dots (QDs) in the biomedical field, the long-lasting effects of QDs on the cell remain poorly understood. To comprehend the mechanisms underlying the toxic effects of QDs in yeast, we characterized defects associated with receptor-mediated endocytosis (RME) as well as pinocytosis using Saccharomyces cerevisiae as a model in the presence of cadmium selenide\/zinc sulfide (CdSe\/ZnS) QDs. Our findings revealed that QDs led to an inefficient RME at the early, intermediate, and late stages of endocytic patch maturation at the endocytic site, with the prolonged lifespan of GFP fused yeast fimbrin (Sac6-GFP), a late marker of endocytosis. The transit of FM1-43, a lipophilic dye from the plasma membrane to the vacuole, was severely retarded in the presence of QDs. Finally, QDs caused an accumulation of monomeric red fluorescent protein fused carbamoyl phosphate synthetase 1 (mRFP-Cps1), a vacuolar lumen marker in the vacuole. In summary, the present study provides novel insights into the possible impact of CdSe\/ZnS QDs on the endocytic machinery, enabling a deeper comprehension of QD toxicity.<\/jats:p>","DOI":"10.3390\/ijms25094714","type":"journal-article","created":{"date-parts":[[2024,4,26]],"date-time":"2024-04-26T05:13:41Z","timestamp":1714108421000},"page":"4714","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Cytotoxicity of Quantum Dots in Receptor-Mediated Endocytic and Pinocytic Pathways in Yeast"],"prefix":"10.3390","volume":"25","author":[{"given":"Onyinye","family":"Okafor","sequence":"first","affiliation":[{"name":"Department of Biology, Missouri State University, 901 S National, Springfield, MO 65897, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0896-9572","authenticated-orcid":false,"given":"Kyoungtae","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Biology, Missouri State University, 901 S National, Springfield, MO 65897, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,26]]},"reference":[{"key":"ref_1","unstructured":"Maxwell, T., Nogueira Campos, M.G., Smith, S., Doomra, M., Thwin, Z., and Santra, S. 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