PMID- 35356682 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220401 IS - 2162-2531 (Print) IS - 2162-2531 (Electronic) IS - 2162-2531 (Linking) VI - 28 DP - 2022 Jun 14 TI - Development of an mRNA replacement therapy for phenylketonuria. PG - 87-98 LID - 10.1016/j.omtn.2022.02.020 [doi] AB - Phenylketonuria (PKU) is an inborn error caused by deficiencies in phenylalanine (Phe) metabolism. Mutations in the phenylalanine hydroxylase (PAH) gene are the main cause of the disease whose signature hallmarks of toxically elevated levels of Phe accumulation in plasma and organs such as the brain, result in irreversible intellectual disability. Here, we present a unique approach to treating PKU deficiency by using an mRNA replacement therapy. A full-length mRNA encoding human PAH (hPAH) is encapsulated in our proprietary lipid nanoparticle LUNAR and delivered to a Pah (enu2) mouse model that carries a missense mutation in the mouse PAH gene. Animals carrying this missense mutation develop hyperphenylalanemia and hypotyrosinemia in plasma, two clinical features commonly observed in the clinical presentation of PKU. We show that intravenous infusion of LUNAR-hPAH mRNA can generate high levels of hPAH protein in hepatocytes and restore the Phe metabolism in the Pah (enu2) mouse model. Together, these data establish a proof of principle of a novel mRNA replacement therapy to treat PKU. CI - (c) 2022 The Authors. FAU - Perez-Garcia, Carlos G AU - Perez-Garcia CG AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Diaz-Trelles, Ramon AU - Diaz-Trelles R AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Vega, Jerel Boyd AU - Vega JB AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Bao, Yanjie AU - Bao Y AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Sablad, Marciano AU - Sablad M AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Limphong, Patty AU - Limphong P AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Chikamatsu, Simon AU - Chikamatsu S AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Yu, Hailong AU - Yu H AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Taylor, Wendy AU - Taylor W AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Karmali, Priya P AU - Karmali PP AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Tachikawa, Kiyoshi AU - Tachikawa K AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. FAU - Chivukula, Padmanabh AU - Chivukula P AD - Arcturus Therapeutics, Inc., 10628 Science Center Drive, Suite 250, San Diego, CA 92121, USA. LA - eng PT - Journal Article DEP - 20220228 PL - United States TA - Mol Ther Nucleic Acids JT - Molecular therapy. Nucleic acids JID - 101581621 PMC - PMC8933640 OTO - NOTNLM OT - LNP OT - MT: Delivery Strategies OT - PAH OT - PKU OT - hepatocytes OT - lipid nanoparticle OT - liver OT - mRNA OT - phenylketonuria OT - replacement OT - therapy COIS- The work included in this manuscript was performed using funds provided by Arcturus Therapeutics, Inc. The authors are current or former employees of Arcturus Therapeutics Inc. EDAT- 2022/04/01 06:00 MHDA- 2022/04/01 06:01 PMCR- 2022/02/28 CRDT- 2022/03/31 05:35 PHST- 2022/01/03 00:00 [received] PHST- 2022/02/25 00:00 [accepted] PHST- 2022/03/31 05:35 [entrez] PHST- 2022/04/01 06:00 [pubmed] PHST- 2022/04/01 06:01 [medline] PHST- 2022/02/28 00:00 [pmc-release] AID - S2162-2531(22)00048-8 [pii] AID - 10.1016/j.omtn.2022.02.020 [doi] PST - epublish SO - Mol Ther Nucleic Acids. 2022 Feb 28;28:87-98. doi: 10.1016/j.omtn.2022.02.020. eCollection 2022 Jun 14.