Cytokine biomarker discovery in the white rhinoceros (Ceratotherium simum). Chileshe, J., Kerr, T. J., Kinnear, C., Buss, P. E., van Helden, P. D., Warren, R. M., Miller, M. A., & Parsons, S. D. C. Veterinary Immunology and Immunopathology, 232:110168, February, 2021. doi abstract bibtex Bovine tuberculosis (bTB), caused by Mycobacterium bovis (M. bovis) infection, disrupts conservation programs of threatened species such as the white rhinoceros (Ceratotherium simum). Interferon gamma release assays have been developed for the diagnosis of M. bovis infection in rhinoceros, however, the discovery of additional diagnostic biomarkers might improve the accuracy of case detection. The aim of this pilot study was therefore to evaluate a novel unbiased approach to candidate biomarker discovery and preliminary validation. Whole blood samples from twelve white rhinoceros were incubated in Nil and TB antigen tubes of the QuantiFERON® TB Gold (In-Tube) system after which RNA was extracted and reverse transcribed. Using the equine RT2 profiler PCR array, relative gene expression analysis of samples from two immune sensitized rhinoceros identified CCL4, CCL8, IL23A, LTA, NODAL, TNF, CSF3, CXCL10 and GPI as upregulated in response to antigen stimulation. Novel gene expression assays (GEAs) were designed for selected candidates, i.e. CCL4, CXCL10 and IFNG, and analysis of QFT-processed samples showed the CXCL10 GEA could distinguish between five M. bovis-infected and five uninfected rhinoceros. These findings confirm the value of the equine RT2 profiler PCR array as a useful tool for screening biomarkers for the diagnosis of M. bovis infection in rhinoceros.
@article{chileshe_cytokine_2021,
title = {Cytokine biomarker discovery in the white rhinoceros ({Ceratotherium} simum)},
volume = {232},
issn = {1873-2534},
doi = {10.1016/j.vetimm.2020.110168},
abstract = {Bovine tuberculosis (bTB), caused by Mycobacterium bovis (M. bovis) infection, disrupts conservation programs of threatened species such as the white rhinoceros (Ceratotherium simum). Interferon gamma release assays have been developed for the diagnosis of M. bovis infection in rhinoceros, however, the discovery of additional diagnostic biomarkers might improve the accuracy of case detection. The aim of this pilot study was therefore to evaluate a novel unbiased approach to candidate biomarker discovery and preliminary validation. Whole blood samples from twelve white rhinoceros were incubated in Nil and TB antigen tubes of the QuantiFERON® TB Gold (In-Tube) system after which RNA was extracted and reverse transcribed. Using the equine RT2 profiler PCR array, relative gene expression analysis of samples from two immune sensitized rhinoceros identified CCL4, CCL8, IL23A, LTA, NODAL, TNF, CSF3, CXCL10 and GPI as upregulated in response to antigen stimulation. Novel gene expression assays (GEAs) were designed for selected candidates, i.e. CCL4, CXCL10 and IFNG, and analysis of QFT-processed samples showed the CXCL10 GEA could distinguish between five M. bovis-infected and five uninfected rhinoceros. These findings confirm the value of the equine RT2 profiler PCR array as a useful tool for screening biomarkers for the diagnosis of M. bovis infection in rhinoceros.},
language = {eng},
journal = {Veterinary Immunology and Immunopathology},
author = {Chileshe, Josephine and Kerr, Tanya J. and Kinnear, Craig and Buss, Peter E. and van Helden, Paul D. and Warren, Robin M. and Miller, Michele A. and Parsons, Sven D. C.},
month = feb,
year = {2021},
pmid = {33373875},
keywords = {CCL4, CXCL10, Cytokines, Gene expression, Mycobacterium bovis, White rhinoceros (Ceratotherium simum)},
pages = {110168},
}
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The aim of this pilot study was therefore to evaluate a novel unbiased approach to candidate biomarker discovery and preliminary validation. Whole blood samples from twelve white rhinoceros were incubated in Nil and TB antigen tubes of the QuantiFERON® TB Gold (In-Tube) system after which RNA was extracted and reverse transcribed. Using the equine RT2 profiler PCR array, relative gene expression analysis of samples from two immune sensitized rhinoceros identified CCL4, CCL8, IL23A, LTA, NODAL, TNF, CSF3, CXCL10 and GPI as upregulated in response to antigen stimulation. Novel gene expression assays (GEAs) were designed for selected candidates, i.e. CCL4, CXCL10 and IFNG, and analysis of QFT-processed samples showed the CXCL10 GEA could distinguish between five M. bovis-infected and five uninfected rhinoceros. 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