کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6136262 1593712 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
MspA-Mycobacterium tuberculosis-transformant with reduced virulence: The “unbirthday paradigm”
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی میکروب شناسی
پیش نمایش صفحه اول مقاله
MspA-Mycobacterium tuberculosis-transformant with reduced virulence: The “unbirthday paradigm”
چکیده انگلیسی
Expressing mspA porin gene from Mycobacterium smegmatis in Mycobacterium tuberculosis attenuated this pathogen. Intracellular growth of the transformants into free-living amoeba and murine and human macrophages decreased. Furthermore, transformants decreased the microbicidal program of human monocyte-derived macrophages. BALB/c mice inoculated with transformants exhibited higher weights, lower histological lesions and lower M. tuberculosis inoculum in the liver, spleen and lungs than control mice challenged with wild-type M. tuberculosis. Preliminary evaluation indicated that mice inoculated with this transformant showed higher weights and lower numbers of lung nodules and tissular mycobacteria than control mice when challenged with wild-type M. tuberculosis. Similar to the paradoxical “unbirthday” gift coined by Lewis Carroll in Alice's Adventures in Wonderland, adding mspA gene reduced the virulence of M. tuberculosis and yielded a protective effect. Lost of non-virulence genes is a mechanism for virulence in mycobacteria. Engineering non-virulence genes in M. tuberculosis may yield strains with decreased virulence and increased immunogenicity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microbial Pathogenesis - Volume 76, November 2014, Pages 10-18
نویسندگان
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