Isolation of known and potentially pathogenic tick-borne microorganisms from European ixodid ticks using tick cell lines.

Authors:
Ana M Palomar
Ana M Palomar
The Pirbright Institute
Shonnette Premchand-Branker
Shonnette Premchand-Branker
The Pirbright Institute
Pilar Alberdi
Pilar Alberdi
University of Edinburgh
United Kingdom
Oxana A Belova
Oxana A Belova
Chumakov Institute of Poliomyelitis and Viral Encephalitides
Russia

Ticks Tick Borne Dis 2019 04 19;10(3):628-638. Epub 2019 Feb 19.

The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey GU24 0NF, UK; The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK; Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool Science Park IC2, 146 Brownlow Hill, Liverpool L3 5RF, UK. Electronic address:

Ticks harbour and, in many cases transmit to their vertebrate hosts, a wide variety of pathogenic, apathogenic and endosymbiotic microorganisms. Recent molecular analyses have greatly increased the range of bacterial species potentially associated with ticks, but in most cases cannot distinguish between surface contaminants, microorganisms present in the remains of the previous blood meal and truly intracellular or tissue-associated bacteria. Here we demonstrate how tick cell lines, primary cell cultures and organ cultures can be used to isolate and propagate bacteria from within embryonic and adult Ixodes ricinus, Dermacentor marginatus and Dermacentor reticulatus ticks originating from different parts of Europe. We isolated and partially characterised four new strains of Spiroplasma from The Netherlands, Spain and Poland, two new strains of Rickettsia raoultii from Russia and Poland, one strain of Rickettsia slovaca from Spain and a species of Mycobacterium from the UK. Comparison with published sequences showed that the Spiroplasma strains were closely related to Spiroplasma ixodetis and the Mycobacterium isolate belonged to the Mycobacterium chelonae complex, while the R. raoultii and R. slovaca strains were similar to previously-validated species.

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Source
http://dx.doi.org/10.1016/j.ttbdis.2019.02.008DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6446187PMC
April 2019
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