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Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells
Published on: May 30, 2025
Long, abundantly expressed non-coding transcripts are altered in cancer.
Damon S Perez1, Tiffany R Hoage, Jay R Pritchett
1Division of Experimental Pathology, Department of Laboratory Medicine and Pathology, Mayo Clinic and Foundation, 200 First Street, S.W., Rochester, MN 55905, USA. perez.damon@mayo.edu
Human Molecular Genetics
|November 17, 2007
Summary
Researchers discovered novel long non-coding transcripts (NCTs) in the human genome. Many of these conserved NCTs show altered expression and mutations in cancers, suggesting a role in disease.
Area of Science:
- Genomics
- Molecular Biology
- Transcriptomics
Background:
- Recent tiling array studies reveal extensive genomic transcription beyond protein-coding genes.
- Non-coding transcripts (NCTs), including microRNAs, are increasingly recognized for their regulatory roles.
- A novel class of long non-coding RNAs (lncRNAs) has emerged, distinct from shorter NCTs.
Purpose of the Study:
- To identify novel long non-coding transcripts (>400 nt) across the human genome using whole-genome tiling arrays.
- To characterize the expression patterns and evolutionary conservation of these newly identified long NCTs.
- To investigate the potential involvement of these long NCTs in human cancers.
Main Methods:
- Whole-genome tiling arrays for comprehensive NCT identification.
- Quantitative real-time RT-PCR for expression analysis in normal tissues and cancers.
- Sequence analysis to detect mutations in cancer cell lines and patient samples.
Main Results:
- Identification of a new group of long, abundantly expressed, and evolutionarily conserved NCTs.
- Altered expression of numerous long NCTs observed in breast and ovarian cancers.
- Consistent mutations detected in several long NCTs across various cancer types, including endometrial cancer.
Conclusions:
- Long non-coding RNAs represent a significant and previously underappreciated component of the human transcriptome.
- These conserved long NCTs exhibit altered expression and genetic mutations in cancer, implicating them in tumorigenesis.
- Further research into the functions of these long NCTs is warranted to understand their roles in normal physiology and disease.
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