{"title":"泰国宋卡斑鸠排泄物中新型隐球菌的基因组特征","authors":"Saowakon Indoung, Sanicha Chumtong, Sakaoporn Prachantasena, Ratchakul Wiriyaprom, Komwit Surachat, Sarunyou Chusri, Rattanaruji Pomwised, Ruttayaporn Ngasaman","doi":"10.3390/vetsci12090827","DOIUrl":null,"url":null,"abstract":"<p><p>The research aimed to study the genome of <i>Cryptococcus neoformans</i> isolated from bird excreta. Thirteen isolates were cultured, colony stained, and underwent biochemical testing confirmation by nested polymerase chain reaction using ITS1-ITS4 and CN4-CN5 primers, respectively. Antifungal susceptibility testing and whole-genomic sequencing were analyzed. The results determined that all isolates were susceptible to amphotericin B (100%), fluconazole, and itraconazole (92.3%). One isolate (DOP3) showed resistance to fluconazole and itraconazole (MIC >64 and >8 µg/mL, respectively). A phylogenetic tree showed the identity of <i>C. neoformans</i> (serotype A). The genome of resistant (DOP3) and non-resistant isolates (DOP3.1) had 14 chromosomes. DOP3 consisted of 38 candidate antifungal resistance genes, which were the most active against azoles (14). The annotated genes in the azole group mostly were in the ATP-binding cassette transporter transmembrane superfamily. Resistance genes against FCZ were in the transcription factors (<i>HAP2, HAP5</i>), zinc finger (<i>NRG1</i>), cytochrome P450 (<i>ERG11</i>), and Myb-like DNA-binding domain (<i>REB1</i>). The most frequent resistance genes against ITZ were cytochrome P450 (<i>ERG5</i> and <i>ERG11</i>) and a transcription factor (<i>HAP5).</i> DOP3.1 also consisted of 26 candidate resistance genes against azoles. Resistance genes against the azole group belong to the <i>ABC</i> transporter transmembrane superfamily. Resistance genes against FCZ belong to cytochrome P450 (<i>ERG11</i>), the zinc finger (<i>NRG1</i>), and the CCAAT binding transcription factor (<i>HAP2</i>). Resistance genes belonging to cytochrome P450 (<i>ERG5</i>) were found against ITZ. This research provides the first report of <i>C. neoformans</i> (serotype A) in zebra dove excreta, drug susceptibility to a resistant strain, and identification of resistance genes. Farm sanitation should be strictly applied, and immunocompetent people should avoid contact with zebra dove excreta.</p>","PeriodicalId":23694,"journal":{"name":"Veterinary Sciences","volume":"12 9","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12474206/pdf/","citationCount":"0","resultStr":"{\"title\":\"Genomic Characterization of <i>Cryptococcus neoformans</i> Isolated from Zebra Dove Excreta in Songkhla, Thailand.\",\"authors\":\"Saowakon Indoung, Sanicha Chumtong, Sakaoporn Prachantasena, Ratchakul Wiriyaprom, Komwit Surachat, Sarunyou Chusri, Rattanaruji Pomwised, Ruttayaporn Ngasaman\",\"doi\":\"10.3390/vetsci12090827\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The research aimed to study the genome of <i>Cryptococcus neoformans</i> isolated from bird excreta. Thirteen isolates were cultured, colony stained, and underwent biochemical testing confirmation by nested polymerase chain reaction using ITS1-ITS4 and CN4-CN5 primers, respectively. Antifungal susceptibility testing and whole-genomic sequencing were analyzed. The results determined that all isolates were susceptible to amphotericin B (100%), fluconazole, and itraconazole (92.3%). One isolate (DOP3) showed resistance to fluconazole and itraconazole (MIC >64 and >8 µg/mL, respectively). A phylogenetic tree showed the identity of <i>C. neoformans</i> (serotype A). The genome of resistant (DOP3) and non-resistant isolates (DOP3.1) had 14 chromosomes. DOP3 consisted of 38 candidate antifungal resistance genes, which were the most active against azoles (14). The annotated genes in the azole group mostly were in the ATP-binding cassette transporter transmembrane superfamily. Resistance genes against FCZ were in the transcription factors (<i>HAP2, HAP5</i>), zinc finger (<i>NRG1</i>), cytochrome P450 (<i>ERG11</i>), and Myb-like DNA-binding domain (<i>REB1</i>). The most frequent resistance genes against ITZ were cytochrome P450 (<i>ERG5</i> and <i>ERG11</i>) and a transcription factor (<i>HAP5).</i> DOP3.1 also consisted of 26 candidate resistance genes against azoles. Resistance genes against the azole group belong to the <i>ABC</i> transporter transmembrane superfamily. Resistance genes against FCZ belong to cytochrome P450 (<i>ERG11</i>), the zinc finger (<i>NRG1</i>), and the CCAAT binding transcription factor (<i>HAP2</i>). Resistance genes belonging to cytochrome P450 (<i>ERG5</i>) were found against ITZ. This research provides the first report of <i>C. neoformans</i> (serotype A) in zebra dove excreta, drug susceptibility to a resistant strain, and identification of resistance genes. Farm sanitation should be strictly applied, and immunocompetent people should avoid contact with zebra dove excreta.</p>\",\"PeriodicalId\":23694,\"journal\":{\"name\":\"Veterinary Sciences\",\"volume\":\"12 9\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12474206/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Veterinary Sciences\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.3390/vetsci12090827\",\"RegionNum\":2,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"VETERINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Veterinary Sciences","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.3390/vetsci12090827","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
Genomic Characterization of Cryptococcus neoformans Isolated from Zebra Dove Excreta in Songkhla, Thailand.
The research aimed to study the genome of Cryptococcus neoformans isolated from bird excreta. Thirteen isolates were cultured, colony stained, and underwent biochemical testing confirmation by nested polymerase chain reaction using ITS1-ITS4 and CN4-CN5 primers, respectively. Antifungal susceptibility testing and whole-genomic sequencing were analyzed. The results determined that all isolates were susceptible to amphotericin B (100%), fluconazole, and itraconazole (92.3%). One isolate (DOP3) showed resistance to fluconazole and itraconazole (MIC >64 and >8 µg/mL, respectively). A phylogenetic tree showed the identity of C. neoformans (serotype A). The genome of resistant (DOP3) and non-resistant isolates (DOP3.1) had 14 chromosomes. DOP3 consisted of 38 candidate antifungal resistance genes, which were the most active against azoles (14). The annotated genes in the azole group mostly were in the ATP-binding cassette transporter transmembrane superfamily. Resistance genes against FCZ were in the transcription factors (HAP2, HAP5), zinc finger (NRG1), cytochrome P450 (ERG11), and Myb-like DNA-binding domain (REB1). The most frequent resistance genes against ITZ were cytochrome P450 (ERG5 and ERG11) and a transcription factor (HAP5). DOP3.1 also consisted of 26 candidate resistance genes against azoles. Resistance genes against the azole group belong to the ABC transporter transmembrane superfamily. Resistance genes against FCZ belong to cytochrome P450 (ERG11), the zinc finger (NRG1), and the CCAAT binding transcription factor (HAP2). Resistance genes belonging to cytochrome P450 (ERG5) were found against ITZ. This research provides the first report of C. neoformans (serotype A) in zebra dove excreta, drug susceptibility to a resistant strain, and identification of resistance genes. Farm sanitation should be strictly applied, and immunocompetent people should avoid contact with zebra dove excreta.
期刊介绍:
Veterinary Sciences is an international and interdisciplinary scholarly open access journal. It publishes original that are relevant to any field of veterinary sciences, including prevention, diagnosis and treatment of disease, disorder and injury in animals. This journal covers almost all topics related to animal health and veterinary medicine. Research fields of interest include but are not limited to: anaesthesiology anatomy bacteriology biochemistry cardiology dentistry dermatology embryology endocrinology epidemiology genetics histology immunology microbiology molecular biology mycology neurobiology oncology ophthalmology parasitology pathology pharmacology physiology radiology surgery theriogenology toxicology virology.