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Stool samples of Mus musculus

ABSTRACT: Fusobacterium nucleatum drives intestinal IL - 17 expression

PROVIDER: PRJNA721215 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14670433_1.fastq.gz	Fastqsanger.gz
	SRR14670433_2.fastq.gz	Fastqsanger.gz
	SRR14670434_1.fastq.gz	Fastqsanger.gz
	SRR14670434_2.fastq.gz	Fastqsanger.gz
	SRR14670435_1.fastq.gz	Fastqsanger.gz

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Effect of Fusobacterium nucleatum on human HUVEC cells

Project description:Localization of Fusobacterium nucleatum in the placenta may be associated with pregnancy complications including preeclampsia (PE), but its specific pathobiology is unknown. Our aim was to analyze the effect of Fusobacterium nucleatum on HUVEC cells to further elucidate placental dysfunction in the context of Fusobacterium nucleatum infestation.

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Fusobacterium nucleatum promotes colorectal cancer cells adhesion to endothelial cells and facilitates extravasation and metastasis by inducing ALPK1/NF-κB/ICAM1 axis

Project description:Fusobacterium nucleatum-treated HCT116 cells reported an increased adhesion to endothelial cells compared with PBS control. To understand the underlying mechanisms of Fusobacterium nucleatum-induced intercellular adhesion ability of CRC cells, we performed RNA-sequencing in HCT116 cells with or without Fusobacterium nucleatum treatment with three independent biological replicates.

2022-03-09 | GSE171611 | GEO

Fusobacterium nucleatum promotes colorectal cancer metastasis through miR-1322/CCL20 axis and M2 polarization

Project description:Fusobacterium nucleatum-treated LoVo cells reported an increased promoting CRC metastasis effect compared with PBS control. To understand the underlying mechanisms of Fusobacterium nucleatum-induced metastasis ability of CRC cells, we performed RNA-sequencing in LoVo cells s with or without Fusobacterium nucleatum treatment with three independent biological replicates.

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Fusobacterium nucleatum Reducing METTL3-mediated m6A Modification Contributes to Colorectal Cancer Aggressiveness [RIP-Seq]

Project description:To investigate the role of Fusobacterium nucleatum-mediated m6A modification, we performed m6A-sequencing to map the m6A modification in control or Fusobacterium nucleatum-treated HCT116 cells.

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Project description:Fusobacterium nucleatum infects RAW264.7 cells

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Fusobacterium nucleatum upregulates the immune inhibitory receptor PD-L1 in intestinal epithelial cells via the activation of ALPK1

Project description:Fusobacterium nucleatum is a Gram-negative oncobacterium that is associated with colorectal cancer. The molecular mechanisms utilized by F. nucleatum to promote colorectal tumor development have largely focused on adhesin-mediated binding to the tumor tissue and on the pro-inflammatory capacity of F. nucleatum. However, the exact manner in which F. nucleatum promotes inflammation in the tumor microenvironment and subsequent tumor promotion remains underexplored. Here, we show that both live F. nucleatum and sterile F. nucleatum-conditioned medium promote CXCL8 release from the intestinal adenocarcinoma HT-29 cell line. We determined that the pro-inflammatory response was ALPK1-dependent in both HEK293 and HT-29 cells and that the released F. nucleatum molecule had characteristics that match those of the pro-inflammatory ALPK1 ligand ADP-heptose or related heptose phosphates. In addition, not only F. nucleatum but also other Fusobacterium species such as F. varium, F. necrophorum and F. gonidiaformans promoted an ALPK1-dependent pro-inflammatory environment, indicating that ADP-heptose or related heptose phosphates secretion is a conserved feature of the Fusobacterium genus. By performing transcriptional analysis of ADP-heptose stimulated HT-29 cells, we found several inflammatory and cancer-related pathways to be differentially regulated, including DNA mismatch repair genes and the immune inhibitory receptor PD-L1. Finally, we show that stimulation of HT-29 cells with F. nucleatum resulted in an ALPK1-dependent upregulation of PD-L1. These results aid in our understanding of the mechanisms by which F. nucleatum can affect tumor development and therapy and pave the way for future therapeutic approaches.

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Mus musculus

Project description:Differential role of IL-23 and IL-17 in intestinal regulation

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Intratumoral Fusobacterium nucleatum Recruits Tumor-Associated Neutrophils to Promote Gastric Cancer Progression and Immune Evasion

Project description:Intratumoral microbiota can impact the development and progression of many types of cancer, including gastric cancer (GC). A better understanding of the precise mechanisms by which microbiota support GC could lead to improved therapeutic approaches. Here, we investigated the effect of intratumoral microbiota on the tumor immune microenvironment (TIME) during GC malignant progression. Analysis of human GC tissues with 16S rRNA amplicon sequencing revealed that Fusobacterium nucleatum (F. nucleatum) was significantly enriched in GC tissues with lymph node metastasis and correlated with a poor prognosis. F. nucleatum infection spontaneously induced chronic gastritis and promoted gastric mucosa dysplasia in mice. Furthermore, GC cells infected with F. nucleatum showed accelerated growth in immunocompetent mice compared to immunodeficient mice. Single-cell RNA sequencing uncovered that F. nucleatum recruited tumor-associated neutrophils (TANs) to reshape the tumor immune microenvironment. Mechanistically, F. nucleatum invaded GC cells and activated IL-17/NF-κB/RelB signaling, inducing TAN recruitment. F. nucleatum also stimulated TAN differentiation into the pro-tumoral subtype and subsequent promotion of PD-L1 expression, further facilitating GC immune evasion while also enhancing the efficacy of anti-PD-L1 antibody therapy. Together, this data uncovers mechanisms by which F. nucleatum affects GC immune evasion and immunotherapy efficacy, providing insights for developing effective treatment strategies.

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Effect of oral gavage of Fusobacterium nucleatum on the development of the placenta in mice

Project description:Placental Fusobacterium nucleatum localization may be associated with pregnancy complications, including preeclampsia (PE), but nothing is known about its specific pathobiology. We aimed to perform transcriptomic analysis of the placentas of mice that were orally gavaged with Fusobacterium nucleatum or saline during pregnancy to further elucidate placental dysfunction in these conditions.

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The adhesion RadD enhances Fusobacterium nucleatum tumor colonization and colorectal carinogenesis

Project description:Fusobacterium nucleatum can bind to host cells and potentiate intestinal tumorigenesis. Here, we used a genome-wide screen to identify an adhesin, RadD, which facilitates the attachment of F. nucleatum to CRC cells in vitro. RadD directly binds to CD147, a receptor overexpressed on CRC cell surfaces, which initiated a PI3K-AKT-NF-kB-MMP9 cascade, subsequently enhanceing tumorigenesis in mice. Clinical specimen analysis showed that elevated radD levels in CRC tissues correlated positively with activated oncogenic signaling and poor patient outcomes. Finally, blockade of the interaction between RadD and CD147 in mice effectively impaired F. nucleatum attachment and attenuated F. nucleatum-induced oncogenic response. Together, our study provides insights into an oncogenic mechanism driven by F. nucleatum RadD and suggests taht the RadD-CD147 interaction could be a potential therapeutic target for CRC.

2024-07-10 | PXD053279 | Pride

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