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Updated: Jun 9, 2026

06:01
Clinicopathological Analysis of miRNA Expression in Breast Cancer Tissues by Using miRNA In Situ Hybridization
Published on: June 7, 2016
[Primary, study of miRNA expression patterns in laryngeal carcinoma by microarray]
Ping Wang1, Tao Fu, Xurui Wang
1Department of Otolaryngology-Head and Neck Surgery, First Hospital of Jilin University, Changchun, 130021, China.
Summary
MicroRNA (miRNA) expression differs in laryngeal carcinoma. This study identified 47 differentially expressed miRNAs, with 23 upregulated and 24 downregulated, suggesting their role in cancer development.
Area of Science:
- Molecular biology
- Genomics
- Oncology
Context:
- Laryngeal carcinoma is a significant global health concern.
- MicroRNAs (miRNAs) are emerging as critical regulators in various cancers.
- Understanding miRNA expression profiles can provide insights into cancer pathogenesis.
Purpose:
- To identify differentially expressed microRNAs (miRNAs) in laryngeal carcinoma compared to adjacent normal tissues.
- To investigate the potential role of these miRNAs in the development of laryngeal cancer.
Summary:
- Microarray analysis revealed 47 differentially expressed miRNAs in laryngeal cancer tissues, with 23 upregulated and 24 downregulated.
- Specific miRNAs, including downregulated miR-1 and upregulated miR-93, showed significant expression changes.
- Real-time RT-PCR confirmed the microarray findings, validating the expression patterns.
Impact:
- The distinct miRNA expression patterns identified may serve as potential biomarkers for laryngeal carcinoma.
- These findings contribute to understanding the molecular mechanisms underlying laryngeal cancer.
- Further research into these miRNAs could lead to novel therapeutic strategies for laryngeal cancer.
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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...
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...
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)...
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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

