Related Experiment Video

Updated: Feb 10, 2026

Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models
04:25

Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models

Published on: October 28, 2021

11.5K

Changes in microRNA expression in the MG-63 osteosarcoma cell line compared with osteoblasts

Hao Hu1, Yi Zhang, Xian-Hua Cai

  • 1Department of Orthopedics, Wuhan General Hospital of Guangzhou Command; ; Department of Orthopedics, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, P.R. China.

Oncology Letters
|November 20, 2012
PubMed

Insights

MicroRNAs (miRNAs) show altered expression in osteosarcoma (OS), a common bone cancer. Identifying these specific miRNA changes offers potential for improved OS diagnosis and treatment strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Osteosarcoma (OS) is the most frequent primary malignant bone tumor, predominantly affecting adolescents and young adults.
  • Early diagnosis of OS is challenging due to incomplete understanding of its molecular and genetic underpinnings.
  • MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression and may offer insights into OS biology.

Purpose of the Study:

  • To investigate differential miRNA expression profiles between OS and osteoblast cell lines.
  • To identify specific miRNAs that are dysregulated in OS.
  • To explore the potential role of these miRNAs in OS oncogenesis, development, and metastasis.

Main Methods:

  • miRNA microarrays were employed to screen for differentially expressed miRNAs.
  • Real-time quantitative PCR (RT-qPCR) was used to validate the expression levels of selected miRNAs.
  • Bioinformatic analyses were conducted to predict the regulatory functions of identified miRNAs.

Main Results:

  • A total of 268 miRNAs were found to be significantly dysregulated in OS cell lines compared to osteoblast cell lines.
  • Overexpressed miRNAs in OS included miR-9, miR-99, miR-195, miR-148a, and miR-181a.
  • Downregulated miRNAs in OS included miR-143, miR-145, miR-335, and miR-539.

Conclusions:

  • The identified differentially expressed miRNAs may serve as potential biomarkers for OS diagnosis and prognosis.
  • These miRNAs likely play a complex role in regulating the biological behaviors of OS, including oncogenesis, development, and metastasis.
  • Further research into the functional roles of these miRNAs could lead to novel therapeutic strategies for osteosarcoma.

More Related Videos

Modeling Osteosarcoma Using Li-Fraumeni Syndrome Patient-derived Induced Pluripotent Stem Cells08:52

Modeling Osteosarcoma Using Li-Fraumeni Syndrome Patient-derived Induced Pluripotent Stem Cells

Published on: June 13, 2018

9.3K
In ovo Expression of MicroRNA in Ventral Chick Midbrain09:19

In ovo Expression of MicroRNA in Ventral Chick Midbrain

Published on: September 15, 2013

11.2K

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...
24.3K
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...
4.0K
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.6K
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

No description available
5.6K
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
26.5K
Comparing Copy Number Variations and SNPs02:26

Comparing Copy Number Variations and SNPs

Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
18.8K