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Delineating transcriptional crosstalk between Mycobacterium avium subsp. paratuberculosis and human THP-1 cells at the early stage of infection via dual RNA-seq analysisopen access

Authors
Park, Hong-TaeLee, Sang-MokKo, SeyoungKim, SujiPark, Hyun-EuiShin, Min-KyoungKim, DonghyukYoo, Han Sang
Issue Date
13-Sep-2022
Publisher
BMC
Keywords
Mycobacterium avium subsp; paratuberculosis; dual RNA-seq; transcriptome; host-pathogen interactome; metabolism
Citation
VETERINARY RESEARCH, v.53, no.1
Indexed
SCIE
SCOPUS
Journal Title
VETERINARY RESEARCH
Volume
53
Number
1
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/860
DOI
10.1186/s13567-022-01089-y
ISSN
0928-4249
Abstract
Mycobacterium avium subsp. paratuberculosis (MAP) is the causative agent of Johne's disease, a chronic debilitating disease in ruminants. To control this disease, it is crucial to understand immune evasion and the mechanism of persistence by analyzing the early phase interplays of the intracellular pathogens and their hosts. In the present study, host-pathogen interactions at the transcriptomic level were investigated in an in vitro macrophage infection model. When differentiated human THP-1 cells were infected with MAP, the expression of various genes associated with stress responses and metabolism was altered in both host and MAP at 3 h post-infection. MAP upregulates stress-responsive global gene regulators, such as two-component systems and sigma factors, in response to oxidative and cell wall stress. Downstream genes involved in type VII secretion systems, cell wall synthesis (polyketide biosynthesis proteins), and iron uptake were changed in response to the intracellular environment of macrophages. On the host side, upregulation of inflammatory cytokine genes was observed along with pattern recognition receptor genes. Notably, alterations in gene sets involved in arginine metabolism were observed in both the host and MAP, along with significant downregulation of NOS2 expression. These observations suggest that the utilization of metabolites such as arginine by intracellular MAP might affect host NO production. Our dual RNA-seq data can provide novel insights by capturing the global transcriptome with higher resolution, especially in MAP, thus enabling a more systematic understanding of host-pathogen interactions.
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