Related Experiment Video

Updated: May 12, 2026

An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function
09:20

An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function

Published on: May 4, 2021

Globular adiponectin modulates expression of programmed cell death 4 and miR-21 in RAW 264.7 macrophages through the

Amit Subedi1, Mi Jin Kim, Saroj Nepal

  • 1College of Pharmacy, Yeungnam University, Gyeongsanbuk-do 712-749, Republic of Korea.

FEBS Letters
|April 20, 2013
PubMed

Insights

Globular adiponectin (gAcrp) influences microRNA-21 (miR-21) and programmed cell death 4 (PDCD4) levels in macrophages. This modulation occurs via ERK, JNK, and NF-κB pathways, suggesting a new target for adiponectin

Area of Science:

  • Cellular and Molecular Biology
  • Immunology
  • Endocrinology

Background:

  • MicroRNA-21 (miR-21) and programmed cell death 4 (PDCD4) are key regulators of cellular processes.
  • Adiponectin, an adipokine, plays crucial roles in metabolic and inflammatory responses.
  • Understanding the interplay between adiponectin and miR-21/PDCD4 is vital for elucidating cellular signaling.

Purpose of the Study:

  • To investigate the effect of globular adiponectin (gAcrp) on miR-21 and PDCD4 expression in RAW 264.7 macrophages.
  • To identify the signaling pathways involved in gAcrp-mediated modulation of the miR-21/PDCD4 axis.
  • To explore the potential of the miR-21/PDCD4 axis as a mediator of adiponectin's biological effects.

Main Methods:

  • Treatment of RAW 264.7 macrophages with globular adiponectin (gAcrp).
  • Assessment of miR-21 and PDCD4 expression levels.
  • Inhibition of key signaling pathways including ERK1/2, JNK, and NF-κB.
  • Analysis of conditioned media from gAcrp-stimulated macrophages to evaluate paracrine effects.

Main Results:

  • Globular adiponectin (gAcrp) significantly modulated the expression of miR-21 and PDCD4 in RAW 264.7 macrophages.
  • The effects of gAcrp on miR-21 and PDCD4 were dependent on the activation of ERK1/2, JNK, and NF-κB signaling pathways.
  • Conditioned media from gAcrp-treated cells mimicked the direct effects of gAcrp, indicating paracrine signaling.

Conclusions:

  • Globular adiponectin (gAcrp) regulates the miR-21/PDCD4 axis in macrophages through ERK and JNK/NF-κB signaling pathways.
  • The miR-21/PDCD4 axis represents a novel molecular target mediating adiponectin's biological responses.
  • These findings provide insights into the molecular mechanisms underlying adiponectin's functions in immune cells.

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