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Detection of MicroRNAs in Microglia by Real-time PCR in Normal CNS and During Neuroinflammation
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The screening of a microRNA expression during development of human macrophages and mouse dendritic cells

Eui Young So1, Trisha Winchester1, Toru Ouchi1

  • 1a Deparment of Cancer Genetics , Roswell Park Cancer Institute , Buffalo , NY , USA.

Cancer Biology & Therapy
|March 16, 2017
PubMed

Insights

MicroRNAs, including miR155, are crucial for myeloid cell development and immune function. This study highlights miR155

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • MicroRNAs (miRNAs) are increasingly recognized for their roles in cell differentiation and cancer.
  • Understanding miRNA expression during immune cell maturation is vital for comprehending immune function.

Purpose of the Study:

  • To investigate miRNA profiles during monocyte and dendritic cell maturation in humans and mice.
  • To determine the specific role of miR155 in dendritic cell development and immune function.

Main Methods:

  • miRNA microarrays were employed to analyze miRNA expression profiles.
  • Quantitative PCR (qPCR) was used to validate key miRNA expression changes.
  • The impact of miR155 on Major Histocompatibility Complex II (MHCII) expression was assessed during dendritic cell maturation.

Main Results:

  • Significant changes in miRNA expression were identified during monocyte and dendritic cell development.
  • miR155 expression levels positively correlated with the maturity of monocytes and dendritic cells in both species.
  • Absence of miR155 led to reduced MHCII expression, impairing dendritic cell immune function.

Conclusions:

  • miRNAs play a significant role in the differentiation of myeloid cells, including dendritic cells and macrophages.
  • miR155 is essential for proper dendritic cell maturation and immune response.
  • Dysregulation of miR155 may impact myeloid cell differentiation and immune system efficacy.
Keywords:
Bone-marrow derived DCscell developmentmacrophagesmiRNAmicroarray

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