ArticleGene therapy2025
Systemically delivered lipid nanoparticle-mRNA encoding lysosomal acid β-glucosidase restores the enzyme deficiency in a murine Gaucher disease model.
Article in Gene therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Gaucher disease (GD) is a rare genetically inherited illness caused by loss of lysosomal acid β-glucosidase (β-GCase) that leads to progressive accumulation of substrates, sphingolipid glucosylceramide (GL1) and glucosylsphingosine (lyso-GL1). The protein-based enzyme replacement therapy (ERT) requires frequent dosing due to short drug half-life causing challenges in long-term patient compliance. JCXH-301 is a lipid nanoparticle (LNP) encapsulated messenger RNA (mRNA) encoding β-GCase. Intravenous administration of JCXH-301 delivered the target mRNA to various tissues in mice with intracellular expression of β-GCase predominantly in macrophages and dendritic cells in the spleen and bone marrow. In GBA1 D427V homozygous mice treated with JCXH-301, the dose-dependent in vivo production of functional β-GCase resulted in reduction of serum lyso-GL1, a key biomarker of GD. The therapeutic effect of JCXH-301 was sustained for a duration significantly longer than that of protein-based ERT Cerezyme. JCXH-301 administration induced minimal pro-inflammatory cytokines in the liver and spleen. Taken together, these results provide proof-of-concept for using LNP-delivered mRNA as a new drug modality to restore the β-GCase genetic deficiency for GD treatment.
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