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[microRNA-126 delivered by microparticles mediates intercellular signal transmission]

Q Geng1, H Chen1, J Y Ren1

  • 1Department of Cardiology, Peking University People's Hospital, Beijing 100044.

Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences
|December 17, 2014
PubMed
Abstract

Insights

Microparticles from HUVEC promote monocyte migration by upregulating CXCR4. These findings highlight microparticles

Area of Science:

  • Cell biology
  • Molecular biology
  • Biochemistry

Background:

  • MicroRNAs (miRNAs) are key regulators of gene expression.
  • Intercellular communication is crucial for biological processes.
  • Microparticles (MPs) are vesicles involved in cell-to-cell signaling.

Purpose of the Study:

  • To investigate the role of microRNAs (miRNAs) in mediating intercellular signaling.
  • To determine if microparticles (MPs) from HUVEC influence monocyte migration.
  • To elucidate the mechanism by which MPs affect monocyte behavior.

Main Methods:

  • Isolation of microparticles (MPs) from HUVEC and 293T cells via sequential centrifugation.
  • Co-culture of THP-1 monocytes with MPs.
  • Assessment of THP-1 monocyte migration using Transwell assays.
  • Analysis of CXCR4 mRNA and protein expression using real-time PCR and Western blotting.

Main Results:

  • MPs from HUVEC significantly promoted monocyte migration compared to MPs from 293T (P<0.05).
  • HUVEC-derived MPs upregulated CXCR4 mRNA and protein expression in monocytes (P<0.05).
  • MiRNA-126 deficient MPs reduced monocyte migration and CXCR4 expression compared to miRNA-126 abundant MPs (P<0.05).

Conclusions:

  • Microparticles derived from HUVEC effectively promote monocyte migration.
  • Microparticles act as crucial carriers for mediating intercellular signaling.
  • MiRNA-126 within MPs plays a significant role in regulating monocyte migration and CXCR4 expression.

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