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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 the regulation of 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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Long non-coding RNAs: new players in cell differentiation and development.

Alessandro Fatica1, Irene Bozzoni2

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Long non-coding RNAs (lncRNAs) are crucial for gene regulation in complex organisms. This review details lncRNA functions in development, including dosage compensation and cell differentiation, especially in mammals.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Developmental Biology

Background:

  • Multicellular organism genomes extensively express various non-coding RNAs (ncRNAs).
  • Long non-coding RNAs (lncRNAs) represent a diverse class of ncRNAs with significant biological roles.
  • The complexity and number of lncRNA species correlate with organismal developmental complexity.

Purpose of the Study:

  • To review the critical functions of lncRNAs in developmental processes.
  • To highlight the importance of lncRNAs in the evolution of multicellularity.
  • To emphasize the role of lncRNAs in mammalian development.

Main Methods:

  • Literature review of existing research on lncRNA function.
  • Analysis of lncRNA roles in key developmental mechanisms.
  • Focus on mammalian systems for detailed examples.

Main Results:

  • lncRNAs are integral to gene expression control during development and differentiation.
  • Specific developmental processes influenced by lncRNAs include dosage compensation, genomic imprinting, cell differentiation, and organogenesis.
  • lncRNA diversity is a hallmark of developmentally complex organisms.

Conclusions:

  • lncRNAs play fundamental roles in the intricate regulatory networks governing multicellular development.
  • Understanding lncRNA function provides insights into evolutionary adaptations for complexity.
  • Mammalian development serves as a key model for studying lncRNA-mediated regulation.