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Transcriptome analysis of Streptococcus mutans fluoride-resistant (FR) strain

ABSTRACT: Transcriptome analysis of Streptococcus mutans fluoride-resistant (FR) strain

PROVIDER: PRJNA628948 | ENA |

REPOSITORIES: ENA

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Transcriptome analysis of Streptococcus mutans fluoride-resistant (FR) strain

Project description:RNA-seq was performed to examine the overall gene expression in a S. mutans FR strain and to identify potential genes that can mainly contribute to the generation of a fluoride resistance in S. mutans. Using RNA-seq technique, the differentially expressed genes that are implicated in phenotypic changes of the FR strain were studied.

2020-04-29 | GSE149509 | GEO

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Global gene expression changes in osteoblasts from fluoride-tolerant mice

Project description:In order to define the underlying mechanism of fluoride resistance in mammals and provide a theoretical basis for fluorosis treatment, high-throughput sequencing was applied to map the genetic changes of fluoride-resistant mouse osteoblasts. Fluoride-tolerant MC3T3-E1 cells were developed by gradient fluoride exposure. The differentially expressed genes of fluorine-resistant MC3T3-E1 cells were identified by high-throughput sequencing. High-throughput RNA sequencing identified 2702 differentially expressed genes (DEGs) showed more than 2-fold difference in 30ppm FR MC3T3-E1 cells, of which 17 DEGs were associated with ferroptosis.

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Streptococcus mutans UA159 control vs. Streptococcus mutans UA159 supplemented with 20 uM 4,5-dihydroxy-2,3-pentadione (DPD) at 3 different pH values

Project description:Transcriptional profiling of early logarithmic phase culture (O.D=0.2-0.3) of Streptococcus mutans UA159 comparing control of untreated Streptococcus mutans UA159 bacteria with Streptococcus mutans UA159 bacteria spplemented with 20µM synthetic DPD (pre-AI-2) which regulates gene expression via AI-2 quorum sensing system.Three compairisons were performed at pHs of 7,6 and 5.

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Interactions with Commensal or Non-commensal Streptococci Alter Streptococcus mutans Transcriptome and Behaviors

Project description:RNA-Seq was used to compare the transcriptome of Streptococcus mutans UA159 during growth alone in monoculture, in coculture with Streptococcus gordonii DL1, Streptococcus sanguinis SK36 or Streptococcus oralis 34, and in a quadculture containing all four species. Individual cultures of commensal species Streptococcus gordonii DL1, Streptococcus sanguinis SK36 and Streptococcus oralis 34 were sequenced as well. This revealed a common transcriptome pattern in S. mutans when grown in mixed-species culture, indepenedent of the species identity that S. mutans was cultured with. Additionally, transcriptome changes in the commensal species could also be determined when undergoing competition from S. mutans. RNA-Seq was used to compare the transcriptome of Streptococcus mutans UA159 during growth alone in monoculture or in coculture with Streptococcus sobrinus NIDR 6715, Lactobacillus casei ATCC 4646 or Corynebacterium matruchotii ATCC 14266. These data were compared to previous coculture and quadculture RNA-Seq data with commensal streptococci (GSE209925). These data confirmed a common transcriptome pattern in S. mutans when grown in mixed-species culture with commensal streptococci that is not present with non-commensal streptococci, indepenedent of the species identity that S. mutans was cultured with.

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Bacitracin upregulates mbrAB transcription via mbrCD to confer bacitracin resistance in Streptococcus mutans

Project description:Streptococcus mutans is a bacterial cause of dental caries that is resistant to bacitracin. This study aimed to elucidate the mbrABCD-related bacitracin resistance mechanism of S. mutans. Transcriptome data demonstrated that 33 genes were induced more than 2 times in expression by bacitracin. Fourteen genes were selected from the upregulated genes and each defective mutants were constructed for measurement of their sensitivity to bacitracin. Among the mutants, only the mbrA- or mbrB-deficient mutants exhibited 100 to 121-fold greater sensitivity to bacitracin when compared with the wild-type strain. Moreover, knockout of the mbrC and mbrD genes abolished the bacitracin-induced mbrAB upregulation. These results suggest that bacitracin upregulates mbrAB transcription via mbrCD, which confers the bacitracin resistant phenotype on S. mutans.

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Bacitracin upregulates mbrAB transcription via mbrCD to confer bacitracin resistance in Streptococcus mutans

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Project description:The influence of cranberry proanthocyanidins on the transcriptomic responses of Streptococcus mutans during biofilm formation was investigated.

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glucose amendment of Streptococcus mutans biofilm

Project description:In this experiment we collected small molecule data that represent excreted molecules by Streptococcus mutans growing as a biofilm. The S. mutans biofilms were established and incubated in anaerobic conditions. Samples were collected before and after a drastic pH drop due to glucose amendments. Control samples are included in this folder that represent molecules that were extracted from sterilized growth media only. These peaks should be subtracted from the biofilm samples prior to analyses.

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