2003
Transcriptome of Treponema pallidum: gene expression profile during experimental rabbit infection
ŠMAJS, David, Petra MATĚJKOVÁ, SJ NORRIS a GM WEINSTOCKZákladní údaje
Originální název
Transcriptome of Treponema pallidum: gene expression profile during experimental rabbit infection
Název česky
Transkriptom Treponema pallidum: expresní profilování během experimentální infekce králíků
Název anglicky
Transcriptome of Treponema pallidum: gene expression profile during experimental rabbit infection
Autoři
ŠMAJS, David (203 Česká republika, garant), Petra MATĚJKOVÁ (203 Česká republika), SJ NORRIS (840 Spojené státy) a GM WEINSTOCK (840 Spojené státy)
Vydání
FEMS Congress of European Microbiologists, Slovenia, Ljubljana, FEMS, 2003, 0378-1097
Další údaje
Jazyk
čeština
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.932
Kód RIV
RIV/00216224:14110/03:00012314
Organizační jednotka
Lékařská fakulta
UT WoS
000227191600037
Klíčová slova anglicky
transcriptome; Treponema pallidum; gene expression profiling
Změněno: 31. 5. 2005 12:03, prof. MUDr. David Šmajs, Ph.D.
V originále
DNA microarray technology was utilized to study gene expression by the syphilis spirochete Treponema pallidum subsp. pallidum (Nichols) during infection of rabbits. Microarrays containing all 1039 annotated ORFs of Treponema pallidum subspecies pallidum (Nichols) were printed on glass slides. For 1034 ORFs (out of 1039), signals higher than the threshold (average of negative control spots + 3 SDs) were detected for both RNA and DNA probes. Total RNA from T. pallidum isolated from rabbit testes 10 days post infection was labeled and standardized by cohybridization of the same arrays with treponemal chromosomal DNA labeled with a different fluorescent marker. This internal standardization technique proved to be highly reproducible and to decrease the impact of variables such as host nucleic acid contamination or variable target DNA lengths. The most highly transcribed genes were found to correlate with the most conspicuous spots identified by two dimensional gel electrophoresis, indicating that the transcript levels generally corresponded to the relative protein concentrations. Genes with high transcript concentrations included those encoding flagellar filament and cytoplasmic filament proteins, prominent lipoproteins and membrane proteins, chaperonins, proteins involved in red-ox balance, chemotaxis regulatory proteins, a V-ATPase operon, and certain metabolic enzymes such as glycolytic pathway enzymes. Independent quantitation of the expression of 84 T. pallidum genes using real-time RT-PCR approach yielded a high degree of correlation (r = 0.94). Characterization of the T. pallidum transcriptome during experimental infection provides further insight into the importance of gene expression levels in the survival and pathogenesis of this bacterium in the mammalian host.
Anglicky
DNA microarray technology was utilized to study gene expression by the syphilis spirochete Treponema pallidum subsp. pallidum (Nichols) during infection of rabbits. Microarrays containing all 1039 annotated ORFs of Treponema pallidum subspecies pallidum (Nichols) were printed on glass slides. For 1034 ORFs (out of 1039), signals higher than the threshold (average of negative control spots + 3 SDs) were detected for both RNA and DNA probes. Total RNA from T. pallidum isolated from rabbit testes 10 days post infection was labeled and standardized by cohybridization of the same arrays with treponemal chromosomal DNA labeled with a different fluorescent marker. This internal standardization technique proved to be highly reproducible and to decrease the impact of variables such as host nucleic acid contamination or variable target DNA lengths. The most highly transcribed genes were found to correlate with the most conspicuous spots identified by two dimensional gel electrophoresis, indicating that the transcript levels generally corresponded to the relative protein concentrations. Genes with high transcript concentrations included those encoding flagellar filament and cytoplasmic filament proteins, prominent lipoproteins and membrane proteins, chaperonins, proteins involved in red-ox balance, chemotaxis regulatory proteins, a V-ATPase operon, and certain metabolic enzymes such as glycolytic pathway enzymes. Independent quantitation of the expression of 84 T. pallidum genes using real-time RT-PCR approach yielded a high degree of correlation (r = 0.94). Characterization of the T. pallidum transcriptome during experimental infection provides further insight into the importance of gene expression levels in the survival and pathogenesis of this bacterium in the mammalian host.
Návaznosti
| NI7351, projekt VaV |
|