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Related Concept Videos

lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

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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...
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Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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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...
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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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nc886, an RNA Polymerase III-Transcribed Noncoding RNA Whose Expression Is Dynamic and Regulated by Intriguing Mechanisms.

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Related Experiment Video

Updated: Sep 26, 2025

RNA Pull-down Procedure to Identify RNA Targets of a Long Non-coding RNA
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Are We Studying Non-Coding RNAs Correctly? Lessons from nc886.

Yong Sun Lee1

  • 1Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang 10408, Korea.

International Journal of Molecular Sciences
|April 23, 2022
PubMed
Summary
This summary is machine-generated.

Investigating non-coding RNAs (ncRNAs) requires careful validation of their identity and function. This review uses nc886 as a case study to highlight essential guidelines for studying regulatory ncRNAs and ensuring robust experimental design.

Keywords:
assayknockdownnc886non-coding RNAoverexpression

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Area of Science:

  • Molecular Biology
  • Genetics
  • RNA Biology

Background:

  • Non-coding RNAs (ncRNAs) represent a significant class of transcripts, many implicated in gene expression regulation.
  • Advancements in sequencing reveal a vast landscape of ncRNAs, prompting extensive research into their functions.
  • Numerous studies claim regulatory roles for ncRNAs, but the rigor of their experimental validation is often debated.

Purpose of the Study:

  • To critically evaluate the methodologies used in non-coding RNA research.
  • To establish guidelines for the accurate identification and functional characterization of regulatory ncRNAs.
  • To use the nc886 regulatory ncRNA as a specific example to illustrate potential pitfalls and best practices.

Main Methods:

  • Review of existing literature on non-coding RNA research, focusing on experimental validation techniques.
  • Case study analysis of the nc886 regulatory ncRNA, examining its reported functions and the evidence supporting them.
  • Discussion of critical considerations for designing gain- and loss-of-function experiments for ncRNAs.

Main Results:

  • Many studies on ncRNAs may overstate conclusions due to insufficient experimental rigor.
  • The correct identification and characterization of ncRNA features are crucial for reliable functional studies.
  • The nc886 case highlights the importance of cautious interpretation of data and robust experimental design.

Conclusions:

  • There is a need for stricter validation standards in non-coding RNA research to ensure the reliability of findings.
  • Researchers should prioritize experiments that rigorously confirm ncRNA identity and function before claiming regulatory roles.
  • Adherence to established guidelines, exemplified by the nc886 case study, will advance the field of ncRNA biology.