Engineered U7 Small Nuclear RNA Restores Correct β-Globin Pre-mRNA Splicing in Mouse βIVS2-654-Thalassemic Erythroid Progenitor Cells.

Abstract:

:Restoration of correct splicing of βIVS2-654-globin pre-mRNA was previously accomplished in erythroid cells from β-thalassemia/HbE patients by an engineered U7 small nuclear RNA (snRNA) that carried a sequence targeted to the cryptic branch point and an exonic splicing enhancer, U7.BP+623 snRNA. In this study, this approach was tested in thalassemic mice carrying the βIVS2-654 mutation. While correction of βIVS2-654 pre-mRNA splicing was achieved in erythroid progenitors transduced with a lentiviral vector carrying the U7.BP+623 snRNA, a high level of truncated U7.BP+623 snRNA was also observed. The discrepancy of processing of the modified U7 snRNA in human and mouse constructs hamper the evaluation of pathologic improvement in mouse model.

journal_name

Hum Gene Ther

journal_title

Human gene therapy

authors

d'Arqom A,Nualkaew T,Jearawiriyapaisarn N,Kole R,Svasti S

doi

10.1089/hum.2020.145

subject

Has Abstract

pub_date

2020-11-02 00:00:00

eissn

1043-0342

issn

1557-7422

pub_type

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