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Proteomic Profiling of Fallopian Tube-Derived Extracellular Vesicles Using a Microfluidic Tissue-on-Chip System.

Didi Zha1, Sagar Rayamajhi2, Jared Sipes2

  • 1Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA.

Bioengineering (Basel, Switzerland)
|April 28, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a microfluidic platform to analyze human fallopian tube epithelium (hFTE) small extracellular vesicles (sEVs). This study identifies 295 hFTE sEV proteins and links them to reproductive functions and ovarian cancer origins.

Keywords:
digital spatial imagingextracellular vesiclesfallopian tubemicrofluidic cultureproteomics

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Area of Science:

  • Cell Biology
  • Reproductive Biology
  • Cancer Research

Background:

  • The human fallopian tube epithelium (hFTE) is critical for fertilization and early embryo development.
  • Most high-grade serous ovarian cancers (HGSOCs) originate in the hFTE.
  • Limited knowledge exists on hFTE-derived small extracellular vesicles (sEVs) due to culture and biomaterial challenges.

Purpose of the Study:

  • To establish a method for culturing hFTE and collecting sufficient sEVs for proteomic analysis.
  • To identify and characterize the proteomic content of hFTE-derived sEVs.
  • To correlate hFTE sEV protein profiles with cell-type-specific transcripts.

Main Methods:

  • Development of a microfluidic platform for hFTE culture and sEV collection.
  • Mass spectrometry-based proteomic profiling of hFTE sEVs.
  • Spatial transcriptomics analysis of hFTE tissue using GeoMx® Cancer Transcriptome Atlas.

Main Results:

  • Successfully cultured hFTE and collected sEVs, yielding 295 common hFTE sEV proteins.
  • Identified hFTE sEV proteins involved in exocytosis, neutrophil degranulation, wound healing, and fertilization.
  • Discovered cell-type-specific transcripts encoding sEV proteins, with FLNA, TUBB, JUP, and FLNC differentially expressed in secretory cells, precursors to HGSOC.

Conclusions:

  • Provides the first baseline proteomic profile of hFTE-derived sEVs.
  • Establishes a correlation between hFTE sEV cargo and lineage-specific transcripts.
  • Offers a foundation for investigating sEV roles in fallopian tube reproductive functions and ovarian cancer development.