Single-cell analysis of ovarian cancer organoids identifies AGRIN as a metastasis driver
Researchers used single-cell RNA sequencing on patient-derived organoids to study how high-grade serous ovarian cancer spreads from the ovary to other sites, identifying AGRIN as a key gene promoting metastatic behavior. The study analyzed tumor samples from seven patients and validated findings through functional experiments showing AGRIN depletion reduces cancer cell migration and invasion. This work provides a framework for discovering therapeutic targets in ovarian cancer and potentially other malignancies.
A new study published on bioRxiv examined how high-grade serous ovarian carcinoma (HGSOC) evolves and spreads using patient-derived organoids combined with single-cell RNA sequencing. Researchers profiled tumor samples from seven patients across primary ovarian sites and metastatic omental sites, reconstructing the molecular trajectories of tumor progression. Through comparative analysis, they identified AGRIN, a heparan sulfate proteoglycan, as consistently upregulated along the metastatic pathway. Cell-cell communication analyses revealed that AGRIN signaling involves both tumor cells and stromal components, operating through extracellular matrix-mediated mechanotransduction and integrin pathways. Functional validation confirmed that genetically depleting AGRIN in ovarian cancer cell lines reduced migratory and invasive capacity, supporting a causal role in metastasis. The findings establish AGRIN as a regulator of metastatic competence and demonstrate that organoid-based single-cell approaches can identify actionable therapeutic targets.
Limitations & open questions
The study's limitations regarding organoid culture conditions, potential selection biases in PDO establishment, generalizability across HGSOC subtypes, and timeline for potential clinical translation are not detailed in this abstract.
What different sources said
- bioRxivCenter
Single-cell transcriptomics of heterogeneous patient-derived organoids reveals novel therapeutic targets in high-grade serous ovarian cancer
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