Molecular and Cellular Biochemistry

, Volume 352, Issue 1–2, pp 181–188

miR-27b*, an oxidative stress-responsive microRNA modulates nuclear factor-kB pathway in RAW 264.7 cells

  • Sivasubramani Thulasingam
  • Chandirasegaran Massilamany
  • Arunakumar Gangaplara
  • Hongjiu Dai
  • Shahlo Yarbaeva
  • Sakthivel Subramaniam
  • Jean-Jack Riethoven
  • James Eudy
  • Marjorie Lou
  • Jay Reddy
Article

DOI: 10.1007/s11010-011-0752-2

Cite this article as:
Thulasingam, S., Massilamany, C., Gangaplara, A. et al. Mol Cell Biochem (2011) 352: 181. doi:10.1007/s11010-011-0752-2

Abstract

Reactive oxygen species (ROS) produced in macrophages is critical for microbial killing, but they also take part in inflammation and antigen presentation functions. MicroRNAs (miRNAs) are endogenous regulators of gene expression, and they can control immune responses. To dissect the complex nature of ROS-mediated effects in macrophages, we sought to characterize miRNAs that are responsive to oxidative stress-induced with hydrogen peroxide (H2O2) in the mouse macrophage cell line, RAW 264.7. We have identified a set of unique miRNAs that are differentially expressed in response to H2O2. These include miR-27a*, miR-27b*, miR-29b*, miR-24-2*, and miR-21*, all of which were downregulated except for miR-21*. By using luciferase reporter vector containing nuclear factor-kB (NF-kB) response elements, we demonstrate that overexpression of miR-27b* suppresses lipopolysaccharide-induced activation of NF-kB in RAW 264.7 cells. Our data suggest that macrophage functions can be regulated by oxidative stress-responsive miRNAs by modulating the NF-kB pathway.

Keywords

Innate immunity Oxidative stress Hydrogen peroxide microRNAs RAW 264.7 cells 

Copyright information

© Springer Science+Business Media, LLC. 2011

Authors and Affiliations

  • Sivasubramani Thulasingam
    • 1
  • Chandirasegaran Massilamany
    • 1
  • Arunakumar Gangaplara
    • 1
  • Hongjiu Dai
    • 1
  • Shahlo Yarbaeva
    • 1
  • Sakthivel Subramaniam
    • 1
  • Jean-Jack Riethoven
    • 2
  • James Eudy
    • 3
  • Marjorie Lou
    • 1
  • Jay Reddy
    • 1
  1. 1.School of Veterinary Medicine and Biomedical SciencesUniversity of Nebraska-LincolnLincolnUSA
  2. 2.Center for BiotechnologyUniversity of Nebraska-LincolnLincolnUSA
  3. 3.DNA Microarray and Sequencing Core FacilitiesUniversity of Nebraska Medical CenterOmahaUSA

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