Multivalent N-Acetylgalactosamine-Conjugated siRNA Localizes in Hepatocytes and Elicits Robust RNAi-Mediated Gene Silencing

JK Nair, JLS Willoughby, A Chan… - Journal of the …, 2014 - ACS Publications
Conjugation of small interfering RNA (siRNA) to an asialoglycoprotein receptor ligand
derived from N-acetylgalactosamine (GalNAc) facilitates targeted delivery of the siRNA to …

Impact of enhanced metabolic stability on pharmacokinetics and pharmacodynamics of GalNAc–siRNA conjugates

…, CR Brown, S Gupta, JLS Willoughby… - Nucleic acids …, 2017 - academic.oup.com
Covalent attachment of a synthetic triantennary N-acetylagalactosamine (GalNAc) ligand to
chemically modified siRNA has enabled asialoglycoprotein (ASGPR)-mediated targeted …

siRNA Conjugates Carrying Sequentially Assembled Trivalent N-Acetylgalactosamine Linked Through Nucleosides Elicit Robust Gene Silencing In Vivo in …

…, A V. Kel'in, P Kandasamy, JLS Willoughby… - ACS chemical …, 2015 - ACS Publications
Asialoglycoprotein receptor (ASGPR) mediated delivery of triantennary N-acetylgalactosamine
(GalNAc) conjugated short interfering RNAs (siRNAs) to hepatocytes is a promising …

Hepatocyte‐Specific Delivery of siRNAs Conjugated to Novel Non‐nucleosidic Trivalent N‐Acetylgalactosamine Elicits Robust Gene Silencing in Vivo

…, N Taneja, J O'Shea, JLS Willoughby… - …, 2015 - Wiley Online Library
We recently demonstrated that siRNAs conjugated to triantennary N‐acetylgalactosamine (GalNAc)
induce robust RNAi‐mediated gene silencing in the liver, owing to uptake mediated …

5′‐(E)‐Vinylphosphonate: A Stable Phosphate Mimic Can Improve the RNAi Activity of siRNA–GalNAc Conjugates

R Parmar, JLS Willoughby, J Liu, DJ Foster… - …, 2016 - Wiley Online Library
Small interfering RNA (siRNA)‐mediated silencing requires siRNA loading into the RNA‐induced
silencing complex (RISC). Presence of 5′‐phosphate (5′‐P) is reported to be critical …

Preclinical evaluation of RNAi as a treatment for transthyretin-mediated amyloidosis

…, A Chan, S Costelha, S Fishman, JLS Willoughby… - Amyloid, 2016 - Taylor & Francis
ATTR amyloidosis is a systemic, debilitating and fatal disease caused by transthyretin (TTR)
amyloid accumulation. RNA interference (RNAi) is a clinically validated technology that may …

[HTML][HTML] Evaluation of GalNAc-siRNA conjugate activity in pre-clinical animal models with reduced asialoglycoprotein receptor expression

JLS Willoughby, A Chan, A Sehgal, JS Butler, JK Nair… - Molecular therapy, 2018 - cell.com
The hepatocyte-specific asialoglycoprotein receptor (ASGPR) is an ideal candidate for targeted
drug delivery to the liver due to its high capacity for substrate clearance from circulation …

Fructose induced KHK-C can increase ER stress independent of its effect on lipogenesis to drive liver disease in diet-induced and genetic models of NAFLD

SH Park, RN Helsley, T Fadhul, JLS Willoughby… - Metabolism, 2023 - Elsevier
Non-alcoholic fatty liver disease (NAFLD) is a liver manifestation of metabolic syndrome,
and is estimated to affect one billion individuals worldwide. An increased intake of a high-fat …

Chirality matters: stereo-defined phosphorothioate linkages at the termini of small interfering RNAs improve pharmacology in vivo

H Jahns, N Taneja, JLS Willoughby… - Nucleic acids …, 2022 - academic.oup.com
A critical challenge for the successful development of RNA interference-based therapeutics
therapeutics has been the enhancement of their in vivo metabolic stability. In therapeutically …

Role of a “Magic” Methyl: 2′-Deoxy-2′-α-F-2′-β-C-methyl Pyrimidine Nucleotides Modulate RNA Interference Activity through Synergy with 5′-Phosphate Mimics …

…, S Matsuda, JA Gilbert, JLS Willoughby… - Journal of the …, 2022 - ACS Publications
Although 2′-deoxy-2′-α-F-2′-β-C-methyl (2′-F/Me) uridine nucleoside derivatives are a
successful class of antiviral drugs, this modification had not been studied in oligonucleotides…