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In Vitro Synthesis of Modified mRNA for Induction of Protein Expression in Human Cells
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In Vitro Synthesis of Modified mRNA for Induction of Protein Expression in Human Cells

Published on: November 13, 2014

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Use of polyadenosine tail mimetics to enhance mRNA expression from genes associated with haploinsufficiency disorders

Bahareh Torkzaban1, Yining Zhu2,3, Christian Lopez1

  • 1Department of Molecular Biology and Genetics, Johns Hopkins University, Baltimore, MD 21205, USA.

Molecular Therapy. Nucleic Acids
|February 19, 2025
PubMed

Insights

Researchers developed mRNA boosters that enhance gene expression by mimicking poly(A) tails. This technology shows promise for treating haploinsufficiency disorders by increasing protein production from targeted genes.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Polyadenosine (poly(A)) tails on messenger RNA (mRNA) are vital for stability and translation.
  • Controlled removal of poly(A) tails in the cytoplasm regulates gene expression and can lead to mRNA degradation.
  • Haploinsufficiency disorders arise from reduced gene expression, impacting cellular function.

Purpose of the Study:

  • To develop a novel therapeutic strategy to enhance mRNA expression.
  • To investigate the potential of poly(A) tail mimetics for treating genetic disorders.
  • To demonstrate the efficacy of mRNA boosters in enhancing gene expression.

Main Methods:

  • Designing and synthesizing short RNA sequences with poly(A) tail mimetics.
  • Antisense hybridization to the 3' untranslated region (UTR) of target mRNAs.
  • In vitro and in vivo validation of enhanced mRNA expression in cell cultures and animal models.

Main Results:

  • Selective and significant enhancement of target mRNA expression was achieved using poly(A) tail mimetics.
  • The technology, termed mRNA boosters, effectively increased expression of genes linked to autism spectrum disorders (e.g., SYNGAP1, MECP2, PURA, CTNNB1).
  • Increased gene expression was observed in both human cell cultures and animal models.

Conclusions:

  • Small poly(A) tail mimetics can substantially enhance mRNA expression.
  • mRNA boosters represent a promising therapeutic modality for haploinsufficiency disorders.
  • This approach offers a potential strategy for treating genetic conditions characterized by insufficient gene dosage.
Keywords:
MT: Oligonucleotides: Therapies and ApplicationsRNA therapeuticsantisense oligonucleotidesgene expressionhaploinsufficiency disordersmRNA expressionpolyadenylationpost-transcriptional regulation

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