PMID- 35424092 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220416 IS - 2046-2069 (Electronic) IS - 2046-2069 (Linking) VI - 11 IP - 3 DP - 2021 Jan 4 TI - Three-dimensional, symmetrically assembled microfluidic device for lipid nanoparticle production. PG - 1430-1439 LID - 10.1039/d0ra08826a [doi] AB - Sub 100 nm-sized lipid nanoparticles (LNPs) have been widely used in drug delivery systems (DDSs). The size of the LNPs is an important parameter for the DDS performance, such as biodistribution and gene silencing using siRNAs. However, the LNPs prepared by the conventional preparation method show a wide size distribution. To improve the LNP size distribution, we developed a microfluidic device, named the iLiNP device, in a previous study. This device could produce LNPs in the size range of 20 to 150 nm, but the size distribution of the large-sized LNPs needs to be further improved. From the viewpoint of the LNP formation process, a homogeneous and slow rate dilution of ethanol plays an important role in improving the large-size LNP size distribution. In this study, we developed a three-dimensional, symmetrically assembled microfluidic device named the 3D-iLiNP device with the aim of precise size control of large-sized LNPs. We designed the 3D-iLiNP device using a computational fluid dynamics simulation and demonstrated that the 3D-iLiNP device can improve the LNP size distribution. The gene silencing activity of four kinds of siRNA-loaded LNPs was investigated via in vitro and in vivo experiments to elucidate the effect of the LNP size distribution. The results revealed that the LNPs with a size between 90 and 120 nm showed higher gene silencing activity than those with other sizes. The 3D-iLiNP device is expected to improve DDS performance by precisely controlling the size of LNPs. CI - This journal is (c) The Royal Society of Chemistry. FAU - Kimura, Niko AU - Kimura N AUID- ORCID: 0000-0002-6313-604X AD - Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan +81-11-706-6745 +81-11-706-6744. FAU - Maeki, Masatoshi AU - Maeki M AUID- ORCID: 0000-0001-7500-4231 AD - Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan tokeshi@eng.hokudai.ac.jp m.maeki@eng.hokudai.ac.jp +81-11-706-6745 +81-11-706-6745. AD - JST PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan. FAU - Sasaki, Kosuke AU - Sasaki K AD - Faculty of Pharmaceutical Sciences, Hokkaido University Kita 12 Nishi 8, Kita-ku Sapporo 060-0812 Japan. FAU - Sato, Yusuke AU - Sato Y AD - Faculty of Pharmaceutical Sciences, Hokkaido University Kita 12 Nishi 8, Kita-ku Sapporo 060-0812 Japan. FAU - Ishida, Akihiko AU - Ishida A AUID- ORCID: 0000-0003-4100-9426 AD - Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan tokeshi@eng.hokudai.ac.jp m.maeki@eng.hokudai.ac.jp +81-11-706-6745 +81-11-706-6745. FAU - Tani, Hirofumi AU - Tani H AUID- ORCID: 0000-0002-5935-0756 AD - Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan tokeshi@eng.hokudai.ac.jp m.maeki@eng.hokudai.ac.jp +81-11-706-6745 +81-11-706-6745. FAU - Harashima, Hideyoshi AU - Harashima H AD - Faculty of Pharmaceutical Sciences, Hokkaido University Kita 12 Nishi 8, Kita-ku Sapporo 060-0812 Japan. FAU - Tokeshi, Manabu AU - Tokeshi M AUID- ORCID: 0000-0002-4412-2144 AD - Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13 Nishi 8, Kita-ku Sapporo 060-8628 Japan tokeshi@eng.hokudai.ac.jp m.maeki@eng.hokudai.ac.jp +81-11-706-6745 +81-11-706-6745. AD - Innovative Research Center for Preventive Medical Engineering, Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan. AD - Institute of Nano-Life Systems, Institutes of Innovation for Future Society, Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan. LA - eng PT - Journal Article DEP - 20210105 PL - England TA - RSC Adv JT - RSC advances JID - 101581657 PMC - PMC8693528 COIS- The authors declare no competing financial interest. EDAT- 2021/01/05 00:00 MHDA- 2021/01/05 00:01 PMCR- 2021/01/05 CRDT- 2022/04/15 05:27 PHST- 2020/10/16 00:00 [received] PHST- 2020/12/09 00:00 [accepted] PHST- 2022/04/15 05:27 [entrez] PHST- 2021/01/05 00:00 [pubmed] PHST- 2021/01/05 00:01 [medline] PHST- 2021/01/05 00:00 [pmc-release] AID - d0ra08826a [pii] AID - 10.1039/d0ra08826a [doi] PST - epublish SO - RSC Adv. 2021 Jan 5;11(3):1430-1439. doi: 10.1039/d0ra08826a. eCollection 2021 Jan 4.