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Ixodes scapularis dystroglycan-like protein promotes Borrelia burgdorferi migration from the gut.


ABSTRACT: The causative agent of Lyme borreliosis, Borrelia burgdorferi, is transmitted by Ixodes ticks. During tick feeding, B. burgdorferi migrates from the tick gut to the salivary glands from where transmission to the host occurs. B. burgdorferi-interacting tick proteins might serve as vaccine targets to thwart B. burgdorferi transmission. A previous screening for B. burgdorferi-interacting Ixodes scapularis gut proteins identified an I. scapularis putative dystroglycan protein (ISCW015049). Here, we describe the ISCW015049's protein structure and its cellular location in the tick gut in relation to B. burgdorferi migration. Secondly, in vivo B. burgdorferi-tick attachment murine models were performed to study the role of ISCW015049 during B. burgdorferi migration and transmission. In silico analysis confirmed that ISCW015049 is similar to dystroglycan and was named I. scapularis dystroglycan-like protein (ISDLP). Confocal microscopy of gut tissue showed that ISDLP is expressed on the surface of gut cells, is upregulated during tick feeding, and is expressed significantly higher in infected ticks compared to uninfected ticks. Inhibition of ISDLP by RNA interference (RNAi) resulted in lower B. burgdorferi transmission to mice. In conclusion, we have identified a dystroglycan-like protein in I. scapularis gut that can bind to B. burgdorferi and promotes B. burgdorferi migration from the tick gut. Key messages: B. burgdorferi exploits tick proteins to orchestrate its transmission to the host. B. burgdorferi is able bind to an I. scapularis dystroglycan-like protein (ISDLP). Inhibition of ISDLP in ticks results in lower B. burgdorferi transmission to mice. ISDLP is a potential target to prevent Lyme borreliosis.

SUBMITTER: Coumou J 

PROVIDER: S-EPMC4803822 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Ixodes scapularis dystroglycan-like protein promotes Borrelia burgdorferi migration from the gut.

Coumou Jeroen J   Narasimhan Sukanya S   Trentelman Jos J JJ   Wagemakers Alex A   Koetsveld Joris J   Ersoz Jasmin I JI   Oei Anneke A   Fikrig Erol E   Hovius Joppe W JW  

Journal of molecular medicine (Berlin, Germany) 20151123 3


The causative agent of Lyme borreliosis, Borrelia burgdorferi, is transmitted by Ixodes ticks. During tick feeding, B. burgdorferi migrates from the tick gut to the salivary glands from where transmission to the host occurs. B. burgdorferi-interacting tick proteins might serve as vaccine targets to thwart B. burgdorferi transmission. A previous screening for B. burgdorferi-interacting Ixodes scapularis gut proteins identified an I. scapularis putative dystroglycan protein (ISCW015049). Here, we  ...[more]

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