Related Experiment Video

Updated: May 14, 2026

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis
10:40

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

Published on: April 25, 2022

MicroRNAs distinguish cytogenetic subgroups in pediatric AML and contribute to complex regulatory networks in

Svenja Daschkey1, Silja Röttgers, Anamika Giri

  • 1Heinrich-Heine University Düsseldorf, Medical Faculty, Clinic for Pediatric Oncology, Hematology and Clinical Immunology, Düsseldorf, Germany.

Plos One
|February 19, 2013
PubMed

Insights

This study identifies distinct microRNA (miRNA) profiles in pediatric acute myeloid leukemia (AML) subtypes. Researchers discovered specific miRNAs that differentiate AML types and identified their mRNA targets, advancing understanding of miRNA roles in childhood AML.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are key post-transcriptional regulators with an emerging role in acute myeloid leukemia (AML) pathogenesis, primarily studied in adults.
  • Current research in pediatric AML focuses on individual miRNAs, lacking a comprehensive overview of miRNA expression and function in children and young adults.

Purpose of the Study:

  • To comprehensively analyze miRNA expression profiles in pediatric and adolescent acute myeloid leukemia (AML) subtypes.
  • To identify specific miRNAs that can distinguish between different pediatric AML subtypes.
  • To investigate the interactions between miRNAs, Argonaute proteins, and their target messenger RNAs (mRNAs) in AML.

Main Methods:

  • Global identification of differentially expressed miRNAs in 102 pediatric and adolescent AML samples.
  • Development of a novel immunoprecipitation assay coupled with microarray detection to isolate Argonaute (Ago)-associated miRNAs.
  • Identification of Ago-associated miRNAs and their target mRNAs in cell line models.

Main Results:

  • Differential miRNA expression successfully distinguished core-binding factor AML and promyelocytic leukemia from MLL-rearranged AML subtypes.
  • Key miRNAs including miR-126, -146a, -181a/b, -100, and miR-125b were identified as discriminators.
  • The study identified specific Ago-associated miRNAs and their target mRNAs, revealing cell context-dependent binding preferences.

Conclusions:

  • miRNAs and their mRNA targets exhibit specific binding preferences for Argonaute proteins in a cell-dependent manner.
  • Pathway analysis suggests coordinated regulation of AML-relevant pathways by Argonaute complexes.
  • This study provides the first comprehensive dataset of Ago-associated miRNAs and target mRNAs in AML, derived from biochemical isolation experiments.
Abstract

More Related Videos

Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy09:40

Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy

Published on: October 4, 2019

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method09:06

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method

Published on: October 7, 2025

Related Concept Videos

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...