Breaking the A chain: regulating mRNAs in development through CCR4 deadenylase

Jocelyn Moore1, Paul Lasko

  • 1Department of Biology and Developmental Biology Research Initiative, McGill University 1205 Avenue Docteur Penfield, Montréal, QC H3A 1B1 Canada.

F1000 Biology Reports
|October 16, 2010
PubMed

Insights

Post-transcriptional gene regulation is crucial for embryonic development. The CCR4 deadenylase complex plays a key role in controlling protein expression from germline messenger RNAs (mRNAs) across diverse species.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Post-transcriptional gene regulation is vital for embryonic pattern formation.
  • The CCR4 deadenylase complex is a conserved protein complex involved in mRNA decay.

Purpose of the Study:

  • To investigate the role of the CCR4 deadenylase complex in embryonic development.
  • To identify key effector mechanisms in germline mRNA regulation.

Main Methods:

  • Comparative analysis across model organisms (C. elegans, Drosophila, Xenopus).
  • Focus on post-transcriptional regulation and protein expression modulation.

Main Results:

  • Convergent experimental evidence highlights the CCR4 deadenylase complex.
  • This complex is a critical effector in regulating germline mRNA expression.

Conclusions:

  • The CCR4 deadenylase complex is a conserved and essential regulator of embryonic development.
  • Its role in modulating protein output from specific germline mRNAs is broadly applicable.

Related Concept Videos

Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
mRNA Stability and Gene Expression02:51

mRNA Stability and Gene Expression

The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability