{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T18:11:15Z","timestamp":1777399875683,"version":"3.51.4"},"reference-count":54,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2021,11,17]],"date-time":"2021-11-17T00:00:00Z","timestamp":1637107200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Coccidian parasites are obligate intracellular pathogens that affect humans and animals. Apicomplexans are defective in de novo synthesis of cholesterol, which is required for membrane biosynthesis and offspring formation. In consequence, cholesterol has to be scavenged from host cells. It is mainly taken up from extracellular sources via LDL particles; however, little is known on the role of HDL and its receptor SR-BI in this process. Here, we studied effects of the SR-BI-specific blocker BLT-1 on the development of different fast (Toxoplasma gondii, Neospora caninum, Besnoitia besnoiti) and slow (Eimeria bovis and Eimeria arloingi) replicating coccidian species. Overall, development of all these parasites was significantly inhibited by BLT-1 treatment indicating a common SR-BI-related key mechanism in the replication process. However, SR-BI gene transcription was not affected by T. gondii, N. caninum and B. besnoiti infections. Interestingly, BLT-1 treatment of infective stages reduced invasive capacities of all fast replicating parasites paralleled by a sustained increase in cytoplasmic Ca++ levels. Moreover, BLT1-mediated blockage of SR-BI led to enhanced host cell lipid droplet abundance and neutral lipid content, thereby confirming the importance of this receptor in general lipid metabolism. Finally, the current data suggest a conserved role of SR-BI for successful coccidian infections.<\/jats:p>","DOI":"10.3390\/microorganisms9112372","type":"journal-article","created":{"date-parts":[[2021,11,17]],"date-time":"2021-11-17T09:16:11Z","timestamp":1637140571000},"page":"2372","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Thiosemicarbazone Copper Chelator BLT-1 Blocks Apicomplexan Parasite Replication by Selective Inhibition of Scavenger Receptor B Type 1 (SR-BI)"],"prefix":"10.3390","volume":"9","author":[{"given":"Camilo","family":"Larrazabal","sequence":"first","affiliation":[{"name":"Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, 35392 Giessen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4910-1705","authenticated-orcid":false,"given":"Sara","family":"L\u00f3pez-Osorio","sequence":"additional","affiliation":[{"name":"Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, 35392 Giessen, Germany"},{"name":"CIBAV Research Group, Veterinary Medicine School, Faculty of Agrarian Sciences, University of Antioquia, Medell\u00edn 050010, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1360-2209","authenticated-orcid":false,"given":"Zahady D.","family":"Vel\u00e1squez","sequence":"additional","affiliation":[{"name":"Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, 35392 Giessen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4550-8492","authenticated-orcid":false,"given":"Carlos","family":"Hermosilla","sequence":"additional","affiliation":[{"name":"Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, 35392 Giessen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anja","family":"Taubert","sequence":"additional","affiliation":[{"name":"Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, 35392 Giessen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2217-9983","authenticated-orcid":false,"given":"Liliana M. R.","family":"Silva","sequence":"additional","affiliation":[{"name":"Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, 35392 Giessen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Archibald, J.M., Simpson, A.G.B., and Slamovits, C.H. (2017). Apicomplexa. Handbook of the Protists, Springer International Publishing.","DOI":"10.1007\/978-3-319-28149-0"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1016\/j.jcpa.2017.04.003","article-title":"Ovine Toxoplasmosis: A New Look at Its Pathogenesis","volume":"157","author":"Benavides","year":"2017","journal-title":"J. Comp. 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