Construction of Mycobacterium tuberculosis cdd knockout and evaluation of invasion and growth in macrophages

Cytidine deaminase (MtCDA), encoded by cdd gene (Rv3315c), is the only enzyme identified in nucleotide biosynthesis pathway of Mycobacterium tuberculosis that is able to recycle cytidine and deoxycytidine. An M. tuberculosis knockout strain for cdd gene was obtained by allelic replacement. Evaluatio...

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Detalles Bibliográficos
Autores principales: Villela, Anne Drumond, Rodrigues-Junior, Valnês S, Pinto, Antônio Frederico Michel, Falcão, Virgínia Carla de Almeida, Sánchez-Quitian, Zilpa Adriana, Eichler, Paula, Bizarro, Cristiano Valim, Basso, Luiz Augusto, Santos, Diógenes Santiago
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Instituto Oswaldo Cruz, Ministério da Saúde 2017
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5661903/
https://www.ncbi.nlm.nih.gov/pubmed/29091140
http://dx.doi.org/10.1590/0074-02760170105
Descripción
Sumario:Cytidine deaminase (MtCDA), encoded by cdd gene (Rv3315c), is the only enzyme identified in nucleotide biosynthesis pathway of Mycobacterium tuberculosis that is able to recycle cytidine and deoxycytidine. An M. tuberculosis knockout strain for cdd gene was obtained by allelic replacement. Evaluation of mRNA expression validated cdd deletion and showed the absence of polar effect. MudPIT LC-MS/MS data indicated thymidine phosphorylase expression was decreased in knockout and complemented strains. The cdd disruption does not affect M. tuberculosis growth both in Mid- dlebrook 7H9 and in RAW 264.7 cells, which indicates that cdd is not important for macrophage invasion and virulence.

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