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- [PROTOCOL]A Signature-Tagged Mutagenesis (STM)-based murine-infectivity assay for Cryptococcus neoformans
- Kwang-Woo Jung , Kyung-Tae Lee , Yong-Sun Bahn
- J. Microbiol. 2020;58(10):823-831. Published online September 29, 2020
- DOI: https://doi.org/10.1007/s12275-020-0341-8
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- 2 Web of Science
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Abstract
-
Signature-tagged mutagenesis (STM) is a high-throughput
genetic technique that can be used to investigate the function
of genes by constructing a large number of mutant strains
with unique DNA identification tags, pooling them, and screening
them for a particular phenotypic trait. STM was first designed
for the identification of genes that contribute to the
virulence or infectivity of a pathogen in its host. Recently, this
method
has also been applied for the identification of mutants with specific phenotypes, such as antifungal drug resistance and proliferation. In the present study, we describe an STM
method
for the identification of genes contributing to the infectivity of Cryptococcus neoformans using a mutant library, in which each strain was tagged with a unique DNA sequence. -
Citations
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- Genome-wide phenotypic profiling of transcription factors and identification of novel targets to control the virulence of Vibrio vulnificus
Dayoung Sung, Garam Choi, Minji Ahn, Hokyung Byun, Tae Young Kim, Hojun Lee, Zee-Won Lee, Ji Yong Park, Young Hyun Jung, Ho Jae Han, Sang Ho Choi
Nucleic Acids Research.2024;[Epub] CrossRef - Zinc-binding domain mediates pleiotropic functions of Yvh1 in Cryptococcus neoformans
Jae-Hyung Jin, Myung Kyung Choi, Hyun-Soo Cho, Yong-Sun Bahn
Journal of Microbiology.2021; 59(7): 658. CrossRef
- Genome-wide phenotypic profiling of transcription factors and identification of novel targets to control the virulence of Vibrio vulnificus
- In vitro disinfection efficacy and clinical protective effects of common disinfectants against acute hepatopancreatic necrosis disease (AHPND)-causing Vibrio isolates in Pacific white shrimp Penaeus vannamei
- Peizhuo Zou , Qian Yang , Hailiang Wang , Guosi Xie , Zhi Cao , Xing Chen , Wen Gao , Jie Huang
- J. Microbiol. 2020;58(8):675-686. Published online July 27, 2020
- DOI: https://doi.org/10.1007/s12275-020-9537-1
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- 2 Web of Science
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Abstract
- Acute hepatopancreatic necrosis disease (AHPND) is one of the most significant bacterial diseases in global shrimp culture, causing severe economic losses. In the present study, we carried out in vitro antimicrobial tests to investigate the disinfection efficacy of 14 common disinfectants toward different AHPND-causing Vibrio spp., including eight isolates of V. parahaemolyticus, four isolates of V. campbellii, and one isolate of V. owensii. Polyhexamethylene biguanidine hydrochloride (PHMB) was revealed to possess the strongest inhibitory activity. Through analyzing and evaluating the results of antimicrobial tests and acute toxicity test, we selected PHMB and hydrogen peroxide (H2O2) for further clinical protection test. Clinical manifestations indicated that both PHMB (2 mg/L and 4 mg/L) and H2O2 (12 mg/L) could effectively protect juvenile Penaeus vannamei from the infection of V. parahaemolyticus isolate Vp362 at 106 CFU/ml, and the survival rate was over 80%. When the bacterial concentration was reduced to 105 CFU/ml, 104 CFU/ml, and 103 CFU/ml, the survival rate after treated by 1 mg/L PHMB was 64.44%, 93.33%, and 100%, respectively. According to the results, PHMB and H2O2 showed a lower toxicity while a better protection activity, particularly against a lower concentration of the pathogens. Therefore, these two disinfectants are proved to be promising disinfectants that can be applied to prevent and control AHPND in shrimp culture. Moreover, the methods of this study also provided valuable information for the prevention of other important bacterial diseases and suggested a reliable means for screening potential drugs in aquaculture.
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Citations
Citations to this article as recorded by- Basigin binds bacteria and activates Dorsal signaling to promote antibacterial defense in Penaeus vannamei
Linwei Yang, Zi-ang Wang, Yushi Gan, Hongliang Zuo, Hengwei Deng, Shaoping Weng, Jianguo He, Xiaopeng Xu
Fish & Shellfish Immunology.2023; 142: 109123. CrossRef - Clinical protective effects of polyhexamethylene biguanide hydrochloride (PHMB) against Vibrio parahaemolyticus causing translucent post-larvae disease (VTPD) in Penaeus vannamei
Tianchang Jia, Tingting Xu, Jitao Xia, Shuang Liu, Wenqiang Li, Ruidong Xu, Jie Kong, Qingli Zhang
Journal of Invertebrate Pathology.2023; 201: 108002. CrossRef
- Basigin binds bacteria and activates Dorsal signaling to promote antibacterial defense in Penaeus vannamei
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