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Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads
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CD146 interacts with galectin-3 to mediate endothelial cell migration.

Zhongyu Zhang1, Yi Zheng1, Hao Wang1

  • 1School of Life Sciences, Northeast Normal University, Changchun, China.

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Galectin-3 binding to CD146 protein on cell membranes is crucial for endothelial cell migration. Blocking CD146 significantly reduces this migration, revealing a key molecular interaction.

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Endothelial cell migration is vital for angiogenesis and tissue repair.
  • Galectin-3 is implicated in various cellular processes, including migration.
  • CD146 is a cell membrane protein with roles in cell adhesion and signaling.

Discussion:

  • This study elucidates the molecular mechanism of galectin-3-mediated endothelial cell migration.
  • The interaction between galectin-3 and CD146 was quantified using biophysical techniques.
  • N-glycans on CD146 ectodomain were identified as critical for galectin-3 binding.

Key Insights:

  • CD146 knockdown significantly impairs galectin-3-induced endothelial cell migration.
  • Galectin-3 binds to the CD146 ectodomain (eFL) with a KD of approximately 1.1 μm.
  • The binding epitope involves N-glycans, likely on Domain 5 of CD146 eFL, which contains poly-N-acetyllactosamine sites.

Outlook:

  • Further research can explore therapeutic strategies targeting the galectin-3/CD146 interaction.
  • Understanding this interaction may offer insights into diseases involving aberrant angiogenesis.
  • Investigating other potential binding partners of galectin-3 and CD146 could reveal new biological functions.