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Liver-specific in vivo base editing of Angptl3 via AAV delivery efficiently lowers blood lipid levels in mice.


ABSTRACT:

Background

Gene editing has emerged as an exciting therapeutic development platform for numerous genetic and nongenetic diseases. Targeting lipid-modulating genes such as angiopoietin-related protein 3 (ANGPTL3) with gene editing offers hope for a permanent solution to lower cardiovascular disease risks associated with hypercholesterolemia.

Results

In this study, we developed a hepatocyte-specific base editing therapeutic approach delivered by dual adeno-associated virus (AAV) to enable hepatocyte-specific targeting of Angptl3 to lower blood lipid levels. Systemic AAV9-mediated delivery of AncBE4max, a cytosine base editor (CBE), targeting mouse Angptl3 resulted in the installation of a premature stop codon in Angptl3 with an average efficiency of 63.3 ± 2.3% in the bulk liver tissue. A near-complete knockout of the ANGPTL3 protein in the circulation were observed within 2-4 weeks following AAV administration. Furthermore, the serum levels of triglyceride (TG) and total cholesterol (TC) were decreased by approximately 58% and 61%, respectively, at 4 weeks after treatment.

Conclusions

These results highlight the promise of liver-targeted Angptl3 base editing for blood lipid control.

SUBMITTER: Zuo Y 

PROVIDER: S-EPMC10273718 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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Liver-specific in vivo base editing of Angptl3 via AAV delivery efficiently lowers blood lipid levels in mice.

Zuo Yuanbojiao Y   Zhang Chen C   Zhou Yuan Y   Li Haiwen H   Xiao Weidong W   Herzog Roland W RW   Xu Jie J   Zhang Jifeng J   Chen Y Eugene YE   Han Renzhi R  

Cell & bioscience 20230615 1


<h4>Background</h4>Gene editing has emerged as an exciting therapeutic development platform for numerous genetic and nongenetic diseases. Targeting lipid-modulating genes such as angiopoietin-related protein 3 (ANGPTL3) with gene editing offers hope for a permanent solution to lower cardiovascular disease risks associated with hypercholesterolemia.<h4>Results</h4>In this study, we developed a hepatocyte-specific base editing therapeutic approach delivered by dual adeno-associated virus (AAV) to  ...[more]

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2022-01-19 | GSE184064 | GEO