Fallopian tube single cell analysis reveals myeloid cell alterations in high-grade serous ovarian cancer

Joshua Brand, Marcela Haro, Xianzhi Lin, B. J. Rimel, Stephanie M. McGregor, Kate Lawrenson, Huy Q. Dinh

Research output: Contribution to journalArticlepeer-review

Abstract

Most high-grade serous ovarian cancers (HGSCs) likely initiate from fallopian tube (FT) epithelia. While epithelial subtypes have been characterized using single-cell RNA-sequencing (scRNA-Seq), heterogeneity of other compartments and their involvement in tumor progression are poorly defined. Integrated analysis of human FT scRNA-Seq and HGSC-related tissues, including tumors, revealed greater immune and stromal transcriptional diversity than previously reported. We identified abundant monocytes in FTs across two independent cohorts. The ratio of macrophages to monocytes is similar between benign FTs, ovaries, and adjacent normal tissues but significantly greater in tumors. FT-defined monocyte and macrophage signatures, cell-cell communication, and gene set enrichment analyses identified monocyte- and macrophage-specific interactions and functional pathways in paired tumors and adjacent normal tissues. Further reanalysis of HGSC scRNA-Seq identified monocyte and macrophage subsets associated with neoadjuvant chemotherapy. Taken together, our work provides data that an altered FT myeloid cell composition could inform the discovery of early detection markers for HGSC.

Original languageEnglish (US)
Article number108990
JournaliScience
Volume27
Issue number3
DOIs
StatePublished - Mar 15 2024
Externally publishedYes

Keywords

  • Cancer
  • Immunology
  • Microenvironment
  • Transcriptomics

ASJC Scopus subject areas

  • General

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