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Alfred Chappell
Alfred Chappell
Associate Director, Ionis Pharmaceuticals
在 ionisph.com 的电子邮件经过验证
标题
引用次数
引用次数
年份
Targeted delivery of antisense oligonucleotides to hepatocytes using triantennary N-acetyl galactosamine improves potency 10-fold in mice
TP Prakash, MJ Graham, J Yu, R Carty, A Low, A Chappell, K Schmidt, ...
Nucleic acids research 42 (13), 8796-8807, 2014
6182014
Mechanisms of single-stranded phosphorothioate modified antisense oligonucleotide accumulation in hepatocytes
E Koller, TM Vincent, A Chappell, S De, M Manoharan, CF Bennett
Nucleic acids research 39 (11), 4795-4807, 2011
3052011
Single-stranded siRNAs activate RNAi in animals
WF Lima, TP Prakash, HM Murray, GA Kinberger, W Li, AE Chappell, ...
Cell 150 (5), 883-894, 2012
2812012
Pharmacokinetics of a tumor necrosis factor-α phosphorothioate 2′-O-(2-methoxyethyl) modified antisense oligonucleotide: comparison across species
RS Geary, ZY Rosie, T Watanabe, SP Henry, GE Hardee, A Chappell, ...
Drug Metabolism and Disposition 31 (11), 1419-1428, 2003
1882003
Development of an ultrasensitive noncompetitive hybridization–ligation enzyme-linked immunosorbent assay for the determination of phosphorothioate oligodeoxynucleotide in plasma
ZY Rosie, B Baker, A Chappell, RS Geary, E Cheung, AA Levin
Analytical biochemistry 304 (1), 19-25, 2002
1732002
Comprehensive Structure–Activity Relationship of Triantennary N-Acetylgalactosamine Conjugated Antisense Oligonucleotides for Targeted Delivery to Hepatocytes
TP Prakash, J Yu, MT Migawa, GA Kinberger, WB Wan, ME Østergaard, ...
Journal of medicinal chemistry 59 (6), 2718-2733, 2016
1392016
Fatty acid conjugation enhances potency of antisense oligonucleotides in muscle
TP Prakash, AE Mullick, RG Lee, J Yu, ST Yeh, A Low, AE Chappell, ...
Nucleic Acids Research 47 (12), 6029-6044, 2019
1342019
Characterization of the interactions of chemically-modified therapeutic nucleic acids with plasma proteins using a fluorescence polarization assay
HJ Gaus, R Gupta, AE Chappell, ME Østergaard, EE Swayze, PP Seth
Nucleic acids research 47 (3), 1110-1122, 2019
1202019
Identification of metabolically stable 5′-phosphate analogs that support single-stranded siRNA activity
TP Prakash, WF Lima, HM Murray, W Li, GA Kinberger, AE Chappell, ...
Nucleic acids research 43 (6), 2993-3011, 2015
982015
TricycloDNA-modified oligo-2′-deoxyribonucleotides reduce scavenger receptor B1 mRNA in hepatic and extra-hepatic tissues—a comparative study of oligonucleotide length …
S Murray, D Ittig, E Koller, A Berdeja, A Chappell, TP Prakash, M Norrbom, ...
Nucleic acids research 40 (13), 6135-6143, 2012
922012
Synergistic effect of phosphorothioate, 5′-vinylphosphonate and GalNAc modifications for enhancing activity of synthetic siRNA
TP Prakash, GA Kinberger, HM Murray, A Chappell, S Riney, MJ Graham, ...
Bioorganic & medicinal chemistry letters 26 (12), 2817-2820, 2016
702016
Spinal distribution and metabolism of 2′-O-(2-methoxyethyl)-modified oligonucleotides after intrathecal administration in rats
M Butler, CS Hayes, A Chappell, SF Murray, TL Yaksh, XY Hua
Neuroscience 131 (3), 705-715, 2005
582005
Lipid nanoparticles improve activity of single-stranded siRNA and gapmer antisense oligonucleotides in animals
TP Prakash, WF Lima, HM Murray, S Elbashir, W Cantley, D Foster, ...
ACS chemical biology 8 (7), 1402-1406, 2013
532013
Conjugation of mono and di-GalNAc sugars enhances the potency of antisense oligonucleotides via ASGR mediated delivery to hepatocytes
GA Kinberger, TP Prakash, J Yu, G Vasquez, A Low, A Chappell, ...
Bioorganic & Medicinal Chemistry Letters 26 (15), 3690-3693, 2016
522016
Mechanisms of palmitic acid-conjugated antisense oligonucleotide distribution in mice
AE Chappell, HJ Gaus, A Berdeja, R Gupta, M Jo, TP Prakash, ...
Nucleic Acids Research 48 (8), 4382-4395, 2020
512020
Mechanistic understanding for the greater sensitivity of monkeys to antisense oligonucleotide–mediated complement activation compared with humans
L Shen, A Frazer-Abel, PR Reynolds, PC Giclas, A Chappell, ...
Journal of Pharmacology and Experimental Therapeutics 351 (3), 709-717, 2014
432014
Reactions of Carbonyl-Conjugated Alkynes with N-Bromosuccinimide and N-Iodosuccinimide in DMF/H2O and Methanol/Sulfuric Acid:  Syntheses of Dihalo Diketones …
VL Heasley, DF Shellhamer, AE Chappell, JM Cox, DJ Hill, SL McGovern, ...
The Journal of Organic Chemistry 63 (13), 4433-4437, 1998
381998
Addition of bromine chloride and iodine monochloride to carbonyl-conjugated, acetylenic ketones: synthesis and mechanisms
VL Heasley, DM Buczala, AE Chappell, DJ Hill, JM Whisenand, ...
The Journal of Organic Chemistry 67 (7), 2183-2187, 2002
322002
Down-regulation of the liver-derived plasma protein fetuin-B mediates reversible female infertility
J Floehr, E Dietzel, C Schmitz, A Chappell, W Jahnen-Dechent
MHR: Basic science of reproductive medicine, 1-11, 2016
312016
Solid-phase synthesis of 5′-triantennary N-acetylgalactosamine conjugated antisense oligonucleotides using phosphoramidite chemistry
TP Prakash, WB Wan, A Low, J Yu, AE Chappell, H Gaus, GA Kinberger, ...
Bioorganic & medicinal chemistry letters 25 (19), 4127-4130, 2015
302015
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