Related Experiment Video
Updated: Jan 6, 2026
08:40
Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
18.0K
MicroRNA-23a inhibits endometrial cancer cell development by targeting SIX1
Hong-Lin Li1, Jun-Jie Sun1, Hui Ma1
1Department of Obstetrics and Gynecology, The Secondary Hospital of Tianjin Medical University, Tianjin 300211, P.R. China.
Oncology Letters
|October 4, 2019
Summary
MicroRNA-23a (miR-23a) inhibits endometrial cancer by targeting SIX1. Overexpressing miR-23a reduces tumor growth and invasion, while SIX1 promotes these processes, highlighting miR-23a as a potential therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Endometrial cancer is a significant gynecological malignancy.
- MicroRNAs play crucial roles in cancer development and progression.
- Understanding the regulatory mechanisms of microRNA in endometrial cancer is vital for therapeutic advancements.
Purpose of the Study:
- To elucidate the inhibitory mechanism of microRNA-23a (miR-23a) in endometrial cancer.
- To investigate the relationship between miR-23a and its potential target, SIX1 (sine oculis homeobox homolog 1).
- To evaluate the therapeutic potential of miR-23a in combination with Taxol®.
Main Methods:
- Reverse transcription quantitative polymerase chain reaction (RT-qPCR) for gene expression analysis.
- Cell proliferation, migration, and invasion assays (colony formation, wound-healing, Transwell).
- Bioinformatics, luciferase reporter gene assay, nude mouse tumorigenicity assay, and immunohistochemistry.
Main Results:
- miR-23a was underexpressed in endometrial cancer tissues.
- Overexpression of miR-23a inhibited endometrial cancer cell proliferation, migration, and invasion.
- SIX1 was identified as a direct downstream target of miR-23a, with miR-23a negatively regulating SIX1 expression.
- SIX1 overexpression reversed the inhibitory effects of miR-23a.
- Combined miR-23a and Taxol® therapy showed inhibitory effects *in vivo* and reduced SIX1 expression.
Conclusions:
- miR-23a acts as a tumor suppressor in endometrial cancer by targeting SIX1.
- The miR-23a/SIX1 axis represents a potential therapeutic strategy for endometrial cancer.
- Further investigation into targeting SIX1 could lead to novel treatment approaches.
Related Concept Videos
01:22MicroRNAs
3.7K
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...
3.7K
01:22MicroRNAs
23.8K
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...
23.8K
02:30siRNA - Small Interfering RNAs
18.3K
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
18.3K
02:34Inhibition of Cdk Activity
5.5K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.5K
02:15Experimental RNAi
7.2K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
7.2K