{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T04:05:16Z","timestamp":1788408316487,"version":"build-2803163510"},"reference-count":51,"publisher":"American Society for Microbiology","issue":"7","license":[{"start":{"date-parts":[[2025,7,29]],"date-time":"2025-07-29T00:00:00Z","timestamp":1753747200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,7,29]],"date-time":"2025-07-29T00:00:00Z","timestamp":1753747200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"DOI":"10.13039\/100008884","name":"Edward P. Evans Foundation","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100008884","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Badger Challenge"},{"DOI":"10.13039\/100000057","name":"National Institute of General Medical Sciences","doi-asserted-by":"publisher","award":["5T32GM007133"],"award-info":[{"award-number":["5T32GM007133"]}],"id":[{"id":"10.13039\/100000057","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000060","name":"National Institute of Allergy and Infectious Diseases","doi-asserted-by":"publisher","award":["R01AI137409"],"award-info":[{"award-number":["R01AI137409"]}],"id":[{"id":"10.13039\/100000060","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["mSphere"],"published-print":{"date-parts":[[2025,7,29]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title\/>\n                    <jats:p>\n                      <jats:italic toggle=\"yes\">Cryptococcus neoformans<\/jats:italic>\n                      is an opportunistic fungal pathogen responsible for life-threatening infections, particularly in immunocompromised individuals. The limitations of current antifungal therapies due to toxicity and the emergence of resistance highlight the need for novel treatment strategies and targets.\n                      <jats:italic toggle=\"yes\">C. neoformans<\/jats:italic>\n                      has an intron-rich genome, and pre-mRNA splicing is required for expression of the vast majority of its genes. In this study, we investigated the efficacy of a human splicing inhibitor, pladienolide B (PladB), as an antifungal against\n                      <jats:italic toggle=\"yes\">C. neoformans<\/jats:italic>\n                      . PladB inhibited the growth of\n                      <jats:italic toggle=\"yes\">C. neoformans<\/jats:italic>\n                      in liquid culture and spore germination. The potency of PladB could be increased by simultaneous treatment with either FK506 or clorgyline. This combination treatment resulted in significant reductions in fungal growth and prevented spore germination. Transcriptomic analysis revealed that PladB inhibits splicing in\n                      <jats:italic toggle=\"yes\">C. neoformans<\/jats:italic>\n                      and results in widespread intron retention. In combination with FK506, this resulted in downregulation of or intron retention in transcripts from processes vital for cellular growth, including translation, transcription, and RNA processing. Together, these results suggest that targeting RNA splicing pathways could be a promising antifungal strategy and that the effectiveness of splicing inhibitors as antifungals can be increased by co-administering drugs such as FK506.\n                    <\/jats:p>\n                    <jats:sec>\n                      <jats:title>IMPORTANCE<\/jats:title>\n                      <jats:p>\n                        Fungal infections, like those caused by\n                        <jats:italic toggle=\"yes\">Cryptococcus neoformans<\/jats:italic>\n                        , can turn deadly for many patients. New treatments and therapeutic targets are needed to combat these pathogens. One potential target is the pre-mRNA processing pathway, which is required for expression of nearly all protein-coding genes in\n                        <jats:italic toggle=\"yes\">C. neoformans<\/jats:italic>\n                        . We have determined that a pre-mRNA splicing inhibitor can inhibit both\n                        <jats:italic toggle=\"yes\">C. neoformans<\/jats:italic>\n                        growth and germination and that the potency of this drug can be increased when used in combination with other molecules. This work provides evidence that targeting steps in pre-mRNA processing may be an effective antifungal strategy and avenue for the development of new medicines.\n                      <\/jats:p>\n                    <\/jats:sec>\n                  <\/jats:sec>","DOI":"10.1128\/msphere.00248-25","type":"journal-article","created":{"date-parts":[[2025,6,23]],"date-time":"2025-06-23T09:00:22Z","timestamp":1750669222000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["The pre-mRNA splicing modulator pladienolide B inhibits\n                    <i>Cryptococcus neoformans<\/i>\n                    germination and growth"],"prefix":"10.1128","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3254-9009","authenticated-orcid":false,"given":"Sierra 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