Alfituri, O. A., Ajibola, O., Brewer, J. M. , Garside, P. , Benson, R. A. , Peel, T., Morrison, L. J. and Mabbott, N. A. (2019) Effects of host-derived chemokines on the motility and viability of Trypanosoma brucei. Parasite Immunology, 41(2), e12609. (doi: 10.1111/pim.12609) (PMID:30525202) (PMCID:PMC6767366)
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Abstract
African trypanosomes (Trypanosoma brucei spp.) are extracellular, hemoflagellate, protozoan parasites. Mammalian infection begins when the tsetse fly vector injects trypanosomes into the skin during blood feeding. The trypanosomes then reach the draining lymph nodes before disseminating systemically. Intravital imaging of the skin post-tsetse fly bite revealed that trypanosomes were observed both extravascularly and intravascularly in the lymphatic vessels. Whether host-derived cues play a role in the attraction of the trypanosomes towards the lymphatic vessels to aid their dis-semination from the site of infection is not known. Since chemokines can mediate the attraction of leucocytes towards the lymphatics, in vitro chemotaxis assays were used to determine whether chemokines might also act as chemoattractants for tryp-anosomes. Although microarray data suggested that the chemokines CCL8, CCL19, CCL21, CCL27 and CXCL12 were highly expressed in mouse skin, they did not stimu-late the chemotaxis of T brucei. Certain chemokines also possess potent antimicrobial properties. However, none of the chemokines tested exerted any parasiticidal ef-fects on T brucei. Thus, our data suggest that host-derived chemokines do not act as chemoattractants for T brucei. Identification of the mechanisms used by trypano-somes to establish host infection will aid the development of novel approaches to block disease transmission.
| Item Type: | Articles |
|---|---|
| Keywords: | Chemokines, chemotaxis, cytotoxicity, intravital imaging, skin, lymphatics, Trypanosoma brucei. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Morrison, Dr Liam and Benson, Dr Robert and Garside, Professor Paul and Brewer, Professor James |
| Authors: | Alfituri, O. A., Ajibola, O., Brewer, J. M., Garside, P., Benson, R. A., Peel, T., Morrison, L. J., and Mabbott, N. A. |
| Subjects: | Q Science > Q Science (General) |
| College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity |
| Research Centre: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity > Centre for Immunobiology |
| Journal Name: | Parasite Immunology |
| Publisher: | Wiley |
| ISSN: | 0141-9838 |
| ISSN (Online): | 1365-3024 |
| Published Online: | 27 December 2018 |
| Copyright Holders: | Copyright © 2019 The Authors |
| First Published: | First published in Parasite Immunology 41(2):e12609 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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