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Lokugamage MP, Vanover D, Beyersdorf J, Hatit MZC, Rotolo L, Echeverri ES, Peck HE, Ni H, Yoon JK, Kim Y, Santangelo PJ, Dahlman JE. Optimization of lipid nanoparticles for the delivery of nebulized therapeutic mRNA to the lungs. Nat Biomed Eng 2021; 5:1059-1068. [PMID: 34616046 DOI: 10.1038/s41551-021-00786-x] [Citation(s) in RCA: 163] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 07/20/2021] [Indexed: 11/09/2022]
Abstract
Lipid nanoparticles (LNPs) for the efficient delivery of drugs need to be designed for the particular administration route and type of drug. Here we report the design of LNPs for the efficient delivery of therapeutic RNAs to the lung via nebulization. We optimized the composition, molar ratios and structure of LNPs made of lipids, neutral or cationic helper lipids and poly(ethylene glycol) (PEG) by evaluating the performance of LNPs belonging to six clusters occupying extremes in chemical space, and then pooling the lead clusters and expanding their diversity. We found that a low (high) molar ratio of PEG improves the performance of LNPs with neutral (cationic) helper lipids, an identified and optimal LNP for low-dose messenger RNA delivery. Nebulized delivery of an mRNA encoding a broadly neutralizing antibody targeting haemagglutinin via the optimized LNP protected mice from a lethal challenge of the H1N1 subtype of influenza A virus, and delivered mRNA more efficiently than LNPs previously optimized for systemic delivery. A cluster approach to LNP design may facilitate the optimization of LNPs for other administration routes and therapeutics.
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Affiliation(s)
- Melissa P Lokugamage
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Daryll Vanover
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Jared Beyersdorf
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Marine Z C Hatit
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Laura Rotolo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Elisa Schrader Echeverri
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Hannah E Peck
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Huanzhen Ni
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Jeong-Kee Yoon
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - YongTae Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA.,George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, USA
| | - Philip J Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA. .,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.
| | - James E Dahlman
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA. .,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.
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Lentiviral delivery of co-packaged Cas9 mRNA and a Vegfa-targeting guide RNA prevents wet age-related macular degeneration in mice. Nat Biomed Eng 2021; 5:144-156. [PMID: 33398131 DOI: 10.1038/s41551-020-00656-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 11/03/2020] [Indexed: 12/26/2022]
Abstract
Therapeutic genome editing requires effective and targeted delivery methods. The delivery of Cas9 mRNA using adeno-associated viruses has led to potent in vivo therapeutic efficacy, but can cause sustained Cas9 expression, anti-Cas9 immune responses and off-target edits. Lentiviral vectors have been engineered to deliver nucleases that are expressed transiently, but in vivo evidence of their biomedical efficacy is lacking. Here, we show that the lentiviral codelivery of Streptococcus pyogenes Cas9 mRNA and expression cassettes that encode a guide RNA that targets vascular endothelial growth factor A (Vegfa) is efficacious in a mouse model of wet age-related macular degeneration induced by Vegfa. A single subretinal injection of engineered lentiviruses knocked out 44% of Vegfa in retinal pigment epithelium and reduced the area of choroidal neovascularization by 63% without inducing off-target edits or anti-Cas9 immune responses. Engineered lentiviruses for the transient expression of nucleases may form the basis of new treatments for retinal neovascular diseases.
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Cowan BD, Lucas JA, Sopelak VM, Lockard V. Failed fertilization during an in vitro fertilization cycle after oral ingestion of amantadine hydrochloride. JOURNAL OF IN VITRO FERTILIZATION AND EMBRYO TRANSFER : IVF 1988; 5:282-5. [PMID: 3148023 DOI: 10.1007/bf01132178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oocyte fertilization occurred during three in vitro fertilization/embryo transfer (IVF/ET) treatment cycles of an infertile couple but failed during an IVF cycle when the husband took amantadine for prophylaxis against viral infection. Semen parameters were similar to those of other cycles attempted by this couple as well as to those of other IVF couples treated concurrently. We circumstantially suggest that amantadine, and potentially other ingestible medications or foods, while not spermicidal, may impair gamete function during IVF/ET.
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Affiliation(s)
- B D Cowan
- Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson 39216-4505
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