CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement.
Lyme borreliosis, also known as Lyme disease, is now the most common vector transmitted disease in the northern hemisphere. It is caused by the spirochete Borrelia burgdorferi and related species. In addition to their clinical importance, these organisms are fascinating to study because of the wide...
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crcansciencepubl:10.1139/w11-143 2023-12-17T10:44:59+01:00 CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. Chaconas, George 2012 http://dx.doi.org/10.1139/w11-143 http://www.nrcresearchpress.com/doi/full-xml/10.1139/w11-143 http://www.nrcresearchpress.com/doi/pdf/10.1139/w11-143 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Microbiology volume 58, issue 3, page 236-248 ISSN 0008-4166 1480-3275 Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology journal-article 2012 crcansciencepubl https://doi.org/10.1139/w11-143 2023-11-19T13:38:16Z Lyme borreliosis, also known as Lyme disease, is now the most common vector transmitted disease in the northern hemisphere. It is caused by the spirochete Borrelia burgdorferi and related species. In addition to their clinical importance, these organisms are fascinating to study because of the wide variety of unusual features they possess. Ongoing work in the laboratory in several areas will be described. (1) The segmented genomes contain up to two dozen genetic elements, the majority of which are linear with covalently closed hairpin ends. These linear DNAs also display a very high degree of ongoing genetic rearrangement. Mechanisms for these processes will be described. (2) Persistent infection by Borrelia species requires antigenic variation through a complex DNA rearrangement process at the vlsE locus on the linear plasmid lp28-1. Novel features of this recombination process will be presented. (3) Evidence for a new global regulatory pathway of B. burgdorferi gene expression that is required for pathogenicity will be described. The DEAH box RNA helicase HrpA is involved in this pathway, which may be relevant in other bacteria. (4) The mechanism of B. burgdorferi to effectively disseminate throughout its host is being studied in real time by high resolution intravital imaging in live mice. Recent work will be presented. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Canadian Journal of Microbiology 58 3 236 248 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
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English |
topic |
Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology |
spellingShingle |
Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology Chaconas, George CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. |
topic_facet |
Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology |
description |
Lyme borreliosis, also known as Lyme disease, is now the most common vector transmitted disease in the northern hemisphere. It is caused by the spirochete Borrelia burgdorferi and related species. In addition to their clinical importance, these organisms are fascinating to study because of the wide variety of unusual features they possess. Ongoing work in the laboratory in several areas will be described. (1) The segmented genomes contain up to two dozen genetic elements, the majority of which are linear with covalently closed hairpin ends. These linear DNAs also display a very high degree of ongoing genetic rearrangement. Mechanisms for these processes will be described. (2) Persistent infection by Borrelia species requires antigenic variation through a complex DNA rearrangement process at the vlsE locus on the linear plasmid lp28-1. Novel features of this recombination process will be presented. (3) Evidence for a new global regulatory pathway of B. burgdorferi gene expression that is required for pathogenicity will be described. The DEAH box RNA helicase HrpA is involved in this pathway, which may be relevant in other bacteria. (4) The mechanism of B. burgdorferi to effectively disseminate throughout its host is being studied in real time by high resolution intravital imaging in live mice. Recent work will be presented. |
format |
Article in Journal/Newspaper |
author |
Chaconas, George |
author_facet |
Chaconas, George |
author_sort |
Chaconas, George |
title |
CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. |
title_short |
CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. |
title_full |
CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. |
title_fullStr |
CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. |
title_full_unstemmed |
CSM Murray Award Lecture — Functional studies of the Lyme disease spirochete — from molecules to mice 1 This article is based on a presentation by Dr. George Chaconas at the 61st Annual Meeting of the Canadian Society of Microbiologists in St. John’s, Newfoundland, on 20 June 2011. Dr. Chaconas was the recipient of the CSM Murray Award for Career Achievement. |
title_sort |
csm murray award lecture — functional studies of the lyme disease spirochete — from molecules to mice 1 this article is based on a presentation by dr. george chaconas at the 61st annual meeting of the canadian society of microbiologists in st. john’s, newfoundland, on 20 june 2011. dr. chaconas was the recipient of the csm murray award for career achievement. |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/w11-143 http://www.nrcresearchpress.com/doi/full-xml/10.1139/w11-143 http://www.nrcresearchpress.com/doi/pdf/10.1139/w11-143 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Microbiology volume 58, issue 3, page 236-248 ISSN 0008-4166 1480-3275 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/w11-143 |
container_title |
Canadian Journal of Microbiology |
container_volume |
58 |
container_issue |
3 |
container_start_page |
236 |
op_container_end_page |
248 |
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1785564650614554624 |