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Home / Archives for Hasan R

Genome-wide analysis of multi- and extensively drug-resistant Mycobacterium tuberculosis

  • Autores: Coll F, Phelan J, Hill-Cawthorne GA, Nair MB, Mallard K, Ali S, Abdallah AM, Alghamdi S, Alsomali M, Ahmed AO, Portelli S, Oppong Y, Alves A, Bessa TB, Campino S, Caws M, Chatterjee A, Crampin AC, Dheda K, Furnham N, Glynn JR, Grandjean L, Minh Ha D, Hasan R, Hasan Z, Hibberd ML, Joloba M, Jones-López EC, Matsumoto T, Miranda A, Moore DJ, Mocillo N, Panaiotov S, Parkhill J, Penha C, Perdigão J, Portugal I, Rchiad Z, Robledo J, Sheen P, Shesha NT, Sirgel FA, Sola C, Oliveira Sousa E, Streicher EM, Helden PV, Viveiros M, Warren RM, McNerney R, Pain A, Clark TG
  • Ano de Publicação: 2018
  • Journal: Nature Genetics
  • Link: https://www.nature.com/articles/s41588-017-0029-0%20

To characterize the genetic determinants of resistance to antituberculosis drugs, we performed a genome-wide association study (GWAS) of 6,465 Mycobacterium tuberculosis clinical isolates from more than 30 countries. A GWAS approach within a mixed-regression framework was followed by a phylogenetics-based test for independent mutations. In addition to mutations in established and recently described resistance-associated genes, […]
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Methylation in Mycobacterium tuberculosis is lineage specific with associated mutations present globally

  • Autores: Phelan J, De Sessions PF, Tientcheu L, Perdigão J, Machado D, Hasan R, Hasan Z, Bergval I, Anthony R, McNerney R, Antonio M, Portugal I, Viveiros M, Campino S, Hibberd ML, Clark TG
  • Ano de Publicação: 2018
  • Journal: Scientific Reports
  • Link: https://www.nature.com/articles/s41598-017-18188-y%20

DNA methylation is an epigenetic modification of the genome involved in regulating crucial cellular processes, including transcription and chromosome stability. Advances in PacBio sequencing technologies can be used to robustly reveal methylation sites. The methylome of the Mycobacterium tuberculosis complex is poorly understood but may be involved in virulence, hypoxic survival and the emergence of […]
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Recombination in pe/ppe genes contributes to genetic variation in Mycobacterium tuberculosis lineages

  • Autores: Alves A, Anthony RM, Bergval I, Bessa TB, Campino S, Clark TG, Coll F, Crampin AC, de Oliveira Sousa E, Dheda K, Gey van Pittius NC, Glynn JR, Grandjean L, Hasan R, Hasan Z, Hibberd ML, McNerney R, Miranda A, Moore D, Pain A, Panaiotov S, Perdigão J, Phelan JE, Portugal I, Sampson SL, Sheen P, Streicher EM, van Helden PD, Viveiros M, Warren R
  • Ano de Publicação: 2016
  • Journal: BMC Genomics
  • Link: https://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-016-2467-y

Background Approximately 10 % of the Mycobacterium tuberculosis genome is made up of two families of genes that are poorly characterized due to their high GC content and highly repetitive nature. The PE and PPE families are typified by their highly conserved N-terminal domains that incorporate proline-glutamate (PE) and proline-proline-glutamate (PPE) signature motifs. They are hypothesised […]
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About GHTM

GHTM is a R&D Center that brings together researchers from IHMT with a track record in Tropical Medicine and International/Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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