Back to Search Start Over

Application of improved GalNAc conjugation in development of cost-effective siRNA therapies targeting cardiovascular diseases.

Authors :
Li Q
Yin K
Ma HP
Liu HH
Li S
Luo X
Hu R
Zhang WW
Lv ZS
Niu XL
Gu MH
Li CL
Liu YS
Liu YJ
Li HB
Li N
Li C
Gu WW
Li JJ
Source :
Molecular therapy : the journal of the American Society of Gene Therapy [Mol Ther] 2024 Mar 06; Vol. 32 (3), pp. 637-645. Date of Electronic Publication: 2024 Jan 10.
Publication Year :
2024

Abstract

N-Acetylgalactosamine (GalNAc)-conjugated small interfering RNA (siRNA) therapies have received approval for treating both orphan and prevalent diseases. To improve in vivo efficacy and streamline the chemical synthesis process for efficient and cost-effective manufacturing, we conducted this study to identify better designs of GalNAc-siRNA conjugates for therapeutic development. Here, we present data on redesigned GalNAc-based ligands conjugated with siRNAs against angiopoietin-like 3 (ANGPTL3) and lipoprotein (a) (Lp(a)), two target molecules with the potential to address large unmet medical needs in atherosclerotic cardiovascular diseases. By attaching a novel pyran-derived scaffold to serial monovalent GalNAc units before solid-phase oligonucleotide synthesis, we achieved increased GalNAc-siRNA production efficiency with fewer synthesis steps compared to the standard triantennary GalNAc construct L96. The improved GalNAc-siRNA conjugates demonstrated equivalent or superior in vivo efficacy compared to triantennary GalNAc-conjugated siRNAs.<br />Competing Interests: Declaration of interests The authors declare no competing interests.<br /> (Copyright © 2024 The American Society of Gene and Cell Therapy. Published by Elsevier Inc. All rights reserved.)

Details

Language :
English
ISSN :
1525-0024
Volume :
32
Issue :
3
Database :
MEDLINE
Journal :
Molecular therapy : the journal of the American Society of Gene Therapy
Publication Type :
Academic Journal
Accession number :
38204163
Full Text :
https://doi.org/10.1016/j.ymthe.2024.01.008