期刊
EMERGING MICROBES & INFECTIONS
卷 11, 期 1, 页码 2080-2092出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/22221751.2022.2109516
关键词
Sandfly; vector-borne pathogens; virome; total microbiome; meta-transcriptomics
资金
- National Natural Science Foundation of China [81290342]
- United States National Institutes of Health [AI151810]
- State Key Laboratory of Infectious Disease Prevention and Control [2014SKLID103]
- Shenzhen Science and Technology Program [KQTD20200820145822023, JCYJ20210324124414040]
- Guangdong Province Pearl River Talent Plan Innovation and Entrepreneurship Team Project [2019ZT08Y464]
This study uncovered the diversity of microbes carried by sandflies in China and demonstrated a high pathogen diversity and abundance, indicating the potential for disease in the local human population or domestic animals.
Phlebotomus chinensis sandfly is a neglected insect vector in China that is well-known for carrying Leishmania. Recent studies have expanded its pathogen repertoire with two novel arthropod-borne phleboviruses capable of infecting humans and animals. Despite these discoveries, our knowledge of the general pathogen diversity and overall microbiome composition of this vector species is still very limited. Here we carried out a meta-transcriptomics analysis that revealed the actively replicating/transcribing RNA viruses, DNA viruses, bacteria, and eukaryotic microbes, namely, the total microbiome, of several sandfly populations in China. Strikingly, microbiome made up 1.8% of total non-ribosomal RNA and comprised more than 87 species, among which 70 were novel, including divergent members of the genera Flavivirus and of the family Trypanosomatidae. Importantly, among these microbes we were able to reveal four distinguished types of human and/or mammalian pathogens, including two phleboviruses (hedi and wuxiang viruses), one novel Spotted fever group rickettsia, as well as a member of Leishmania donovani complex, among which hedi virus and Leishmania each had > 50% pool prevalence rate and relatively high abundance levels. Our study also showed the ubiquitous presence of an endosymbiont, namely Wolbachia, although no anti-viral or anti-pathogen effects were detected based on our data. In summary, our results uncovered the much un-explored diversity of microbes harboured by sandflies in China and demonstrated that high pathogen diversity and abundance are currently present in multiple populations, implying disease potential for exposed local human population or domestic animals.
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