Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR9018010_1.fastq.gz | Fastqsanger.gz | |||
| SRR9018010_2.fastq.gz | Fastqsanger.gz | |||
| SRR9018011_1.fastq.gz | Fastqsanger.gz | |||
| SRR9018011_2.fastq.gz | Fastqsanger.gz | |||
| SRR9018012_1.fastq.gz | Fastqsanger.gz |
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Project description:PT modification is widely distributed in the bacterial genome, in which a sulfur atom replaces a non-bridging oxygen atom in DNA backbone. Its function is related to restriction modification, oxidative stress, and regulation of gene expression. By heterologously expressing the GpsATC modification system and the Gm6ATC modification system in E. coli HST04 strain, previous studies found that the PT modification and another restriction modification, the methylation modification, can share the same motif. However, bacteria in which both modifications naturally coexist in the same motif do not exist in nature. We found a bacterial strain S1 that naturally contains the GpsATC modification and used this strain to construct multiple modification systems to study the interactions between the multiple modifications. Our results showed that when the dam gene (G6mATC) is introduced, the two modifications can coexist in the same motif (Gps6mATC) and produce the new modification types (GpsATC); when another PT modification system (GPS GCC) is introduced, the two types of PT modification motifs (GpsGCC, GpsATC) coexist, with GpsGCC dominating. It also led to the emergence of the novel modification type CpsTGG/CpsCAG. All three models of multisystem coexistence resulted in shifts in modification sites and differences in gene expression. This study sheds light on the understanding of modification interactions and epigenetic networks.
2025-09-01 | GSE242703 | GEO
Project description:This dataset was obtained from the authors of Starke et al. (2020, Journal of Proteomics 222: 103791, https://doi.org/10.1016/j.jprot.2020.103791). Sample labels: 1 - High fiber diet inoculum 2 - High protein diet inoculum 3,4,5 - High fiber + unlabeled water 6,7,8 - High protein + unlabeled water 9,10,11 - High fiber + 25% of 99.9 atom% D2O 12,13,14 - High protein + 25% of 99.9 atom% D2O 15,16,17 - High fiber + 25% of 99.0 atom% H218O 18,19,20 - High protein + 25% of 99.0 atom% H218O Direct quote from the original article describing the dataset. “…the impact of specific diets on a defined microbial community derived from a human fecal sample was to be determined. The defined community was chosen to provide a stable in vitro setup that could be useful for future microbiome research. Briefly, the microbial community was grown in a heavy fiber and a heavy protein diet in addition to 25% heavy water, either as D2O or H218O. A dosage of 25% isotopically labeled water was chosen by trial-and-error to yield sufficient incorporation into protein but avoid the reduction of activity of individual organisms. A difference in growth medium formulation, representing a high-fiber diet and a high-protein diet, was utilized to evaluate shifts in microbial activity. We chose to assess these diets because high-protein, low-carbohydrate interventions represent a popular weight-loss strategy and because we expected a strong effect on the synthesis of amino acids by this comparison. After an incubation time of 12 h, the proteins were analyzed for label-free quantitation (metaproteomics) and incorporation of isotopes (protein-SIP), each in triplicates….”
2022-12-30 | PXD024291 | Pride
Project description:Rhizosphere total bacteria Illumina sequencing
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Project description:In present study we optimized and validated the mDOT-seq approach with miRXplore Universal Reference (Miltenyi Biotec) RNA. The results revealed that the 3' adapters with alkyne moieties attached to the fifth carbon atom of the second cytosine or uracil in ACTC and CUCC sequences, respectively, are best suited for the preparation of RNA sequencing libraries.
2021-05-20 | GSE166931 | GEO
Project description:Tumor microenvironment (TME)-induced nanocatalytic therapy is a promising strategy for cancer treatment, but the low catalytic efficiency limits its therapeutic efficacy. Single-atom catalysts (SACs) are a new type of nanozyme with incredible catalytic efficiency. Here we construct a single-atom manganese (Mn)-N/C nanozyme. Mn-N/C catalyzes the conversion of cellular H2O2 to ∙OH through a Fenton-like reaction and enables the sufficient generation of reactive oxygen species (ROS), which induces immunogenic cell death (ICD) of tumor cells and significantly promotes CD8+T anti-tumor immunity. Moreover, RNA sequencing reveals that Mn-N/C treatment activates type I interferon (IFN) signaling which is critical for Mn-N/C-mediated anti-tumor immune response. Mechanistically, Mn-N/C-triggered releasing of cytosolic DNA from ICD tumor cells activates cGAS-STING pathway, consequently stimulating type I IFN induction. We propose a new promising single-atom nanozyme with extraordinary catalytic activity, which enhances anti-tumor immune response and exhibits synergistic therapeutic effects when combined with anti-PD-L1 blockade.
2024-04-24 | GSE249852 | GEO
Project description:Despite the promise of immune checkpoint blockade (ICB) in head and neck squamous cell carcinoma (HNSCC), mediators of response are poorly understood. To address this, we analyzed oropharyngeal HNSCCs treated with neoadjuvant durvalumab (anti-PD-L1) alone or in combination with tremelimumab (anti-CTLA-4) from the CIAO clinical trial (NCT03144778). We found that only the total abundance of intratumoral bacteria predicted ICB response, which was validated in multiple independent patient cohorts. High intratumoral bacteria abundance was associated with an immunosuppressive tumor microenvironment, characterized by an accumulation of neutrophils coupled with depletion of T cells and other adaptive immune cells. Experimental elevation or reduction of intratumoral bacteria abundance in orthotopic models of HNSCC in female mice recapitulated immunological associations observed in patient tumors. Increasing intratumoral bacteria abundance was sufficient to induce resistance to anti-PD-L1 immune checkpoint blockade, irrespective of bacterial species tested. Together, these findings demonstrate that high intratumoral bacteria abundance is a key suppressor of anti-tumor immunity and promotes immunotherapy resistance.
2025-09-09 | GSE307471 | GEO
Project description:Here we report 16s rRNA data in gut microbiota of hepatocellular carcinoma (HCC) patients with HBV induced HCC (HBVC) and non-HBV induced HCC (NHBVC) compared with healthy volunteers. A total of 2047 operational taxonomic units (OTUs) were identified in the sequence data. Our data shows that the NHBVC patients harbor lower anti-inflammatory bacteria and more pro-inflammatory bacteria, while the HBVC patients harbor more anti-inflammatory bacteria.
2019-02-27 | GSE108847 | GEO
Project description:High throughput RNA sequencing For RNA sequencing, F. nucleatum was incubated with 1 mM or 5 mM metformin for 7 hours, when the bacterium were under logarithmic phase. Total RNA of F. nucleatum was stabilized with RNA protect Bacteria Reagent (QIAGEN, Germany) and extracted using a QIAGEN RNeasy kit (QIAGEN, Germany) following the manufacturer’s instructions.
2024-04-01 | GSE171561 | GEO