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Neutrophil dichotomy drives lymphatic metastasis

ABSTRACT: Neutrophil dichotomy drives lymphatic metastasis

PROVIDER: PRJNA1210645 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR32000400.fastq.gz	Fastqsanger.gz
	SRR32000401.fastq.gz	Fastqsanger.gz
	SRR32000402.fastq.gz	Fastqsanger.gz
	SRR32000403.fastq.gz	Fastqsanger.gz
	SRR32000404.fastq.gz	Fastqsanger.gz

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Neutrophil dichotomy drives lymphatic metastasis

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P4HA3 drives cervical cancer lymphatic metastasis by facilitating ACLY-mediated ferroptosis resistance

Project description:P4HA3 drives cervical cancer lymphatic metastasis by facilitating ACLY-mediated ferroptosis resistance

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Hypoxia-Enhanced Podoplanin-Defined Tumour Plasticity Drives CCR7-Mediated Lymphatic Metastasis in Breast Cancer

Project description:Background: Lymphatic metastasis is strongly associated with poor prognosis. Although the chemokine receptor CCR7 is a well-established promoter of lymphatic dissemination, its prognostic relevance remains weak. We show that tumour cell plasticity, defined by upregulation of podoplanin (PDPN) and promoted by hypoxia, intersects with CCR7 function in triple-negative breast cancer (TNBC). Methods: In vivo and in vitro studies using a CCR7-expressing TNBC mouse model were combined with transcriptomic profiling. Human relevance was assessed using scRNA-seq datasets from cell lines and primary tumours, as well as the METABRIC breast cancer cohorts (n = 1784). Results: A PDPN-defined epithelial–mesenchymal transition (EMT) state—promoted by hypoxia—was required for efficient CCR7-driven lymphatic metastasis and tumour progression. PDPN-expression was linked to elevated tumour cell collagen-expression and suppression of interferon-signalling, features associated with an immune-cold microenvironment. PDPN-expression with effects on interferon and collagen programs were observed across murine and human TNBC/basal-like cell lines. In primary TNBC, PDPN-expression correlated with EMT, collagen, and hypoxia signatures, mirroring murine findings. In METABRIC, high CCR7–PDPN co-expression predicted poor survival in lymph node–positive patients, whereas either marker alone lacked prognostic value. Conclusions: PDPN is a tumour-cell-associated biomarker of plasticity in TNBC, revealing synergy between specific hypoxia-induced EMT-states and CCR7 in promoting lymphatic dissemination and poor prognosis.

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