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A microneedle vaccine printer for thermostable COVID-19 mRNA vaccines

by Eshaghi, Behnaz , Menon, Nandita , Forster, Timothy A. , Zhang, Linzixuan , Collins, Joe , Pardeshi, Apurva , Jacob-Dolan, Catherine , Varshney, Dhruv , Pyon, Sydney L. , Li, Gary , Han, Jooli , Powers, Olivia C. , Sarmadi, Morteza , Jaklenec, Ana , Barouch, Dan H. , Alsaiari, Shahad K. , Wolf, Morris , vander Straeten, Aurélien , Farra, Robert , Langer, Robert , Daristotle, John L. , Tibbitt, Mark W. , Hall, Kevin , Kanelli, Maria , Garcia, Johnny , Tostanoski, Lisa H.

in 631/250/590 / 639/166/985 / 639/925/350/354 / 692/699/255/2514 / 706/134 / Agriculture / Animals / Automation / Bioinformatics / Biological activity / Biomedical and Life Sciences / Biomedical Engineering/Biotechnology / Biomedicine / Biotechnology / Coronaviruses / COVID-19 / COVID-19 - prevention & control / COVID-19 vaccines / COVID-19 Vaccines - genetics / Fabrication / Formulations / Humans / Immune response / Immunization / Life Sciences / Lipids / Mice / mRNA / mRNA Vaccines / Nanoparticles / Needles / Polymer blends / Polymers / RNA, Messenger - genetics / Room temperature / SARS-CoV-2 - genetics / Severe acute respiratory syndrome coronavirus 2 / Spike protein / Vaccines / Viral diseases

2024

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A microneedle vaccine printer for thermostable COVID-19 mRNA vaccines

2024

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2024

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Journal Article

A microneedle vaccine printer for thermostable COVID-19 mRNA vaccines

Eshaghi, Behnaz,

Menon, Nandita,

Forster, Timothy A.,

Zhang, Linzixuan,

Collins, Joe,

Pardeshi, Apurva,

Jacob-Dolan, Catherine,

Varshney, Dhruv,

Pyon, Sydney L.,

Li, Gary,

Han, Jooli,

Powers, Olivia C.,

Sarmadi, Morteza,

Jaklenec, Ana,

Barouch, Dan H.,

Alsaiari, Shahad K.,

Wolf, Morris,

vander Straeten, Aurélien,

Farra, Robert,

Langer, Robert,

Daristotle, John L.,

Tibbitt, Mark W.,

Hall, Kevin,

Kanelli, Maria,

Garcia, Johnny,

Tostanoski, Lisa H.

2024

Overview

Decentralized manufacture of thermostable mRNA vaccines in a microneedle patch (MNP) format could enhance vaccine access in low-resource communities by eliminating the need for a cold chain and trained healthcare personnel. Here we describe an automated process for printing MNP Coronavirus Disease 2019 (COVID-19) mRNA vaccines in a standalone device. The vaccine ink is composed of lipid nanoparticles loaded with mRNA and a dissolvable polymer blend that was optimized for high bioactivity by screening formulations in vitro. We demonstrate that the resulting MNPs are shelf stable for at least 6 months at room temperature when assessed using a model mRNA construct. Vaccine loading efficiency and microneedle dissolution suggest that efficacious, microgram-scale doses of mRNA encapsulated in lipid nanoparticles could be delivered with a single patch. Immunizations in mice using manually produced MNPs with mRNA encoding severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein receptor-binding domain stimulate long-term immune responses similar to those of intramuscular administration. Automated fabrication of microneedle patch mRNA vaccines for COVID-19 may improve vaccine access.

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Nature Publishing Group US,Nature Publishing Group

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