Related Experiment Video
Updated: Aug 22, 2026
Differentiation of a Human Neural Stem Cell Line on Three Dimensional Cultures, Analysis of MicroRNA and Putative Target Genes
Published on: April 12, 2015
Altered expression profiles of microRNAs during TPA-induced differentiation of HL-60 cells
Katsumi Kasashima1, Yoshikazu Nakamura, Tomoko Kozu
1Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Saitama 362-0806, Japan.
Abstract:
MicroRNAs (miRNAs) are highly conserved small non-coding RNAs that regulate gene expression through translational repression by base-pairing with partially complementary mRNAs. The expression of a set of miRNAs is known to be regulated developmentally and spatially, and is involved in differentiation or cell proliferation in several organisms. However, the expression profiles of human miRNAs during cell differentiation remain largely unknown. In an effort to expand our knowledge of human miRNAs, we investigated miRNAs during 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced differentiation of human leukemia cells (HL-60) into monocyte/macrophage-like cells. Several hundred RNAs ranging from 18 to 26 nucleotides were isolated from HL-60 cells with or without TPA-induction, and subsequently characterized by sequencing, database searching, and expression profiling. By removing non-miRNA sequences, we found three novel and 38 known miRNAs expressed in HL-60 cells. These miRNAs could be further classified into subsets of miRNAs that responded differently following TPA induction, either being up-regulated or down-regulated, suggesting the importance of regulated gene expression via miRNAs in the differentiation of HL-60 cells.
Insights
This study identifies novel and known microRNAs (miRNAs) during human leukemia cell differentiation. These miRNAs show altered expression, highlighting their role in regulating gene expression during cell development.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression.
- miRNA expression is developmentally and spatially controlled, impacting cell differentiation.
- Human miRNA expression during cell differentiation is not well understood.
Purpose of the Study:
- To investigate human miRNA expression profiles during 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced differentiation of HL-60 leukemia cells.
- To identify novel and known miRNAs involved in monocyte/macrophage-like cell differentiation.
- To understand the role of differential miRNA expression in HL-60 cell differentiation.
Main Methods:
- Isolation and sequencing of small RNAs (18-26 nucleotides) from HL-60 cells with and without TPA induction.
- Bioinformatic analysis including database searching and expression profiling.
- Characterization of miRNA expression patterns (up-regulation/down-regulation) post-TPA treatment.
Main Results:
- Identified three novel and 38 known miRNAs in HL-60 cells.
- Discovered subsets of miRNAs with distinct expression changes (up-regulated or down-regulated) following TPA induction.
- Demonstrated differential regulation of miRNA expression during HL-60 cell differentiation.
Conclusions:
- Human leukemia cell differentiation involves a complex regulatory network of microRNAs.
- Specific miRNAs are dynamically regulated during TPA-induced differentiation of HL-60 cells.
- These findings contribute to understanding miRNA-mediated gene regulation in human cell differentiation.
More Related Videos
11:06Genome-wide Analysis of HDAC Inhibitor-mediated Modulation of microRNAs and mRNAs in B Cells Induced to Undergo Class-switch DNA Recombination and Plasma Cell Differentiation
Published on: September 20, 2017
12:44Identification of Key Factors Regulating Self-renewal and Differentiation in EML Hematopoietic Precursor Cells by RNA-sequencing Analysis
Published on: November 11, 2014