Molecular Detection of Multidrug Resistance and Characterizations of Mutations in Mycobacterium Tuberculosis Using Polycarbonate Track-Etched Membrane Based DNA Bio-Chip
© Association of Microbiologists of India 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law..
With the widespread use of rifampicin (RMP) and isoniazid (INH), multidrug resistance (MDR) in Mycobacterium tuberculosis (M.tb) poses a threat to the success of tuberculosis (TB) control programs. We have developed a new polycarbonate track-etched membranes (PC-TEM) based DNA bio-chip designed for rapid detection of mutations conferring MDR in M.tb culture isolates. Bio-chips were designed to contain 14 specific probes for wild type and mutated allele of selected codons within 80 bp rifampicin resistance determining region of rpoB gene, katG gene and mabA-inhA regulatory region. RMP-resistance-associated gene mutation points rpoB 516, 526, 531 and 533, and the INH-resistance-associated gene mutation points katG315 and inhA-15 were targeted. Bio-chip signal was detected using enhanced chemiluminescence. A total of 50 culture isolates that were sensitive or resistant to RMP and/or INH were analyzed by bio-chip. The results of culture-based drug susceptibility testing (DST) were used as the gold standard and gene sequencing was performed to resolve the discordance. Amongst 50 culture isolates, we have detected 18 MDR, 9 RMP mono-resistant, 6 INH mono-resistant, and 17 fully susceptible isolates. The developed DNA bio-chip has a sensitivity of 90% for RMP and MDR and 100% for INH resistance. The bio-chip has a specificity of 100% for RMP and MDR and 88.8% for INH detection. The identification of mutations using the DNA bio-chip was 100% concordant with the sequencing data for the probes covered by the bio-chip. The detection of rpoB, katG and inhA gene mutation points by a DNA bio-chip may be used as a rapid, accurate, and economical, clinical detection method for MDR detection in M.tb. This is very valuable for the control of TB epidemics.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:64 |
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| Enthalten in: |
Indian journal of microbiology - 64(2024), 1 vom: 30. März, Seite 92-99 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Jain, Bharti [VerfasserIn] |
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| Links: |
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| Themen: |
DNA bio-chip |
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| Anmerkungen: |
Date Revised 13.03.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1007/s12088-023-01116-2 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a With the widespread use of rifampicin (RMP) and isoniazid (INH), multidrug resistance (MDR) in Mycobacterium tuberculosis (M.tb) poses a threat to the success of tuberculosis (TB) control programs. We have developed a new polycarbonate track-etched membranes (PC-TEM) based DNA bio-chip designed for rapid detection of mutations conferring MDR in M.tb culture isolates. Bio-chips were designed to contain 14 specific probes for wild type and mutated allele of selected codons within 80 bp rifampicin resistance determining region of rpoB gene, katG gene and mabA-inhA regulatory region. RMP-resistance-associated gene mutation points rpoB 516, 526, 531 and 533, and the INH-resistance-associated gene mutation points katG315 and inhA-15 were targeted. Bio-chip signal was detected using enhanced chemiluminescence. A total of 50 culture isolates that were sensitive or resistant to RMP and/or INH were analyzed by bio-chip. The results of culture-based drug susceptibility testing (DST) were used as the gold standard and gene sequencing was performed to resolve the discordance. Amongst 50 culture isolates, we have detected 18 MDR, 9 RMP mono-resistant, 6 INH mono-resistant, and 17 fully susceptible isolates. The developed DNA bio-chip has a sensitivity of 90% for RMP and MDR and 100% for INH resistance. The bio-chip has a specificity of 100% for RMP and MDR and 88.8% for INH detection. The identification of mutations using the DNA bio-chip was 100% concordant with the sequencing data for the probes covered by the bio-chip. The detection of rpoB, katG and inhA gene mutation points by a DNA bio-chip may be used as a rapid, accurate, and economical, clinical detection method for MDR detection in M.tb. This is very valuable for the control of TB epidemics | ||
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