PMID- 35073217 OWN - NLM STAT- MEDLINE DCOM- 20220606 LR - 20220708 IS - 2159-3345 (Electronic) IS - 2159-3337 (Linking) VI - 32 IP - 3 DP - 2022 Jun TI - Altered Biodistribution and Hepatic Safety Profile of a Gapmer Antisense Oligonucleotide Bearing Guanidine-Bridged Nucleic Acids. PG - 177-184 LID - 10.1089/nat.2021.0034 [doi] AB - Guanidine-bridged nucleic acid (GuNA) is a novel 2',4'-bridged nucleic acid/locked nucleic acid (2',4'-BNA/LNA) analog containing cations that exhibit strong affinity for target RNA and superior nuclease resistance. In this study, Malat1 antisense oligonucleotide (ASO) bearing GuNA was evaluated for target knockdown (KD) activity and tolerability. The GuNA ASO did not interfere with RNase H recruitment on the target RNA/ASO heteroduplex and did show potent target KD activity in a skeletal muscle-derived cell line equivalent to that of the LNA ASO under gymnotic conditions, whereas almost no KD activity was observed in a hepatocyte-derived cell line. The GuNA ASO exhibited potent KD activity in various tissues; the KD activity in the skeletal muscle was equivalent with that of the LNA ASO, but the KD activities in the liver and kidney were clearly lower compared with the LNA ASO. In addition, despite the higher accumulation of the GuNA ASO in the liver, levels of aspartate aminotransferase and alanine aminotransferase with the GuNA ASO administration were not elevated compared with those induced by the LNA ASO. Our data indicate that the GuNA ASO is tolerable and exhibits unique altered pharmacological activities in comparison with the LNA ASO in terms of the relative effect between liver and skeletal muscle. FAU - Sasaki, Takashi AU - Sasaki T AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Hirakawa, Yoko AU - Hirakawa Y AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Yamairi, Fumiko AU - Yamairi F AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Kurita, Takashi AU - Kurita T AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Murahashi, Karin AU - Murahashi K AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Nishimura, Hirokazu AU - Nishimura H AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Iwazaki, Norihiko AU - Iwazaki N AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Yasuhara, Hidenori AU - Yasuhara H AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Tateoka, Takashi AU - Tateoka T AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Ohta, Tetsuya AU - Ohta T AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. FAU - Obika, Satoshi AU - Obika S AUID- ORCID: 0000-0002-6842-6812 AD - Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan. FAU - Kotera, Jun AU - Kotera J AD - Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Fujisawa, Kanagawa, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220124 PL - United States TA - Nucleic Acid Ther JT - Nucleic acid therapeutics JID - 101562758 RN - 0 (Guanidines) RN - 0 (Nucleic Acids) RN - 0 (Oligonucleotides, Antisense) RN - 63231-63-0 (RNA) RN - JU58VJ6Y3B (Guanidine) SB - IM MH - Guanidine/metabolism MH - Guanidines/metabolism MH - Liver/metabolism MH - *Nucleic Acids MH - *Oligonucleotides, Antisense/pharmacology MH - RNA/metabolism MH - Tissue Distribution OTO - NOTNLM OT - biodistribution OT - extrahepatic OT - gapmer OT - guanidine-bridged nucleic acids EDAT- 2022/01/25 06:00 MHDA- 2022/06/07 06:00 CRDT- 2022/01/24 17:14 PHST- 2022/01/25 06:00 [pubmed] PHST- 2022/06/07 06:00 [medline] PHST- 2022/01/24 17:14 [entrez] AID - 10.1089/nat.2021.0034 [doi] PST - ppublish SO - Nucleic Acid Ther. 2022 Jun;32(3):177-184. doi: 10.1089/nat.2021.0034. Epub 2022 Jan 24.