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Collagen processing is essential for germ cell identity.

Sydney Roman1, Nathalie Oulhen1, Gerardo Reyes1

  • 1Department of Molecular and Cellular Biology, Brown University, 185 Meeting St., Providence, RI 02912, USA.

Biology Open
|November 20, 2025
PubMed
Summary
This summary is machine-generated.

Lysyl oxidase (LOX) activity is crucial for embryonic development and germ cell formation by maintaining extracellular matrix integrity. Inhibiting LOX disrupts this instructive environment, impacting development even when germ cell fate is predetermined.

Keywords:
Strongylocentrotus purpuratusCollagenExtracellular matrixGermline inheritanceGlycolysisLysyl oxidaseMetabolism

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Area of Science:

  • Developmental Biology
  • Biochemistry
  • Cell Biology

Background:

  • The extracellular matrix (ECM) provides structural support and signaling cues during embryonic development.
  • Lysyl oxidase (LOX) crosslinks collagen, vital for ECM integrity and mechanical properties.
  • Dysregulated LOX activity can compromise ECM integrity and impact developmental processes.

Purpose of the Study:

  • To investigate the role of LOX activity in embryonic development and germ cell formation using sea urchins.
  • To elucidate the contribution of the ECM to establishing an instructive environment for germ line development.

Main Methods:

  • Utilized a combination of novel and traditional LOX inhibitors.
  • Employed a morpholino antisense oligonucleotide to target a specific lysyl oxidase.
  • Applied chemoselective fluorescent probes to detect LOX oxidation products.

Main Results:

  • LOX activity was found to be essential for creating an instructive environment for germ line development.
  • Disruption of LOX activity impacted the maintenance of ECM integrity during development.
  • The study highlights the ECM's role in germ cell development, irrespective of predetermined cell fate.

Conclusions:

  • Extracellular matrix remodeling by LOX is critical for germ line development.
  • LOX-mediated ECM integrity is necessary for providing instructive developmental cues.
  • Findings offer insights into ECM, gene expression, and metabolism interplay in development and germ cell identity.