Evidence map›Paper›PMID 41241219›Full record

ArticleJournal of pharmaceutical sciences2026

Lipid-free, thermostable mRNA vaccines prepared using atomic layer deposition.

Holly J Coleman, Amber Rauch, Erika Langsfeld, Kimberly Anderson, Urvi Parlikar, Hans H Funke, Robert L Garcea, Theodore W Randolph

Abstract read
In one paragraph

Article in Journal of pharmaceutical sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Holly J ColemanDepartment of Chemical and Biological Engineering, University of Colorado Boulder, CO 80303, USA.
Amber RauchDepartment of Molecular, Cellular, and Developmental Biology and the BioFrontiers Institute, University of Boulder, CO 80303, USA.
Erika LangsfeldDepartment of Molecular, Cellular, and Developmental Biology and the BioFrontiers Institute, University of Boulder, CO 80303, USA.
Kimberly AndersonDepartment of Molecular, Cellular, and Developmental Biology and the BioFrontiers Institute, University of Boulder, CO 80303, USA.
Urvi ParlikarDepartment of Chemical and Biological Engineering, University of Colorado Boulder, CO 80303, USA.
Hans H FunkeDepartment of Chemical and Biological Engineering, University of Colorado Boulder, CO 80303, USA.
Robert L GarceaDepartment of Molecular, Cellular, and Developmental Biology and the BioFrontiers Institute, University of Boulder, CO 80303, USA.
Theodore W RandolphDepartment of Chemical and Biological Engineering, University of Colorado Boulder, CO 80303, USA. Electronic address: theodore.randolph@colorado.edu.

Funding

Interdisciplinary Predoctoral Training in Molecular BiophysicsT32GM145437 · NIGMS · UNIVERSITY OF COLORADO · PI JOSEPH J FALKE · 2022 to 2026
$2.5M
Laser Scanning Confocal MicroscopeS10OD034320 · OD · UNIVERSITY OF COLORADO · PI DRAGAVON, JOSEPH · 2023 to 2023
$445k
NIGMS NIH HHS T32 GM145437NIH HHS S10 OD034320
6 · The paper itself

Abstract

Lipid nanoparticle (LNP) formulations of mRNA vaccines have played a pivotal role in combatting SARS-CoV-2 infections and are expected to be a useful vaccine modality against other pathogens. However, the instability of mRNA-LNP vaccines requires their storage at temperatures below 0 °C and presents manufacturing challenges. We describe thermally stable, lipid-free mRNA vaccines prepared by spray-drying to embed mRNA within glassy polysaccharide microparticles, followed by atomic layer deposition (ALD) to encapsulate the microparticles within protective alumina shells that provide temporally controlled antigen release and facilitate cellular uptake. Using mRNAs encoding for ovalbumin, the modified HIV envelope trimer protein N332-GT2, and green fluorescent protein (GFP), we show that alumina-coated microparticles containing lipid-free mRNA are internalized by cultured macrophages in vitro, elicit robust immune responses compared to LNP-based mRNA vaccines in vivo, and are stable when stored for 6 months at temperatures up to 40 °C. Thus, alumina-coated mRNA vaccines may overcome current limitations of mRNA-LNP vaccines without using LNPs or other lipid-based carriers.

Indexed as

COVID-19 VaccinesmRNA VaccinesRNA, MessengerAluminum OxideAnimalsCOVID-19Drug StabilityFemaleGreen Fluorescent ProteinsHumansLipidsLiposomesMacrophagesMiceNanoparticlesOvalbuminAluminum OxideCOVID-19 VaccinesGreen Fluorescent ProteinsLipid NanoparticlesLipidsLiposomesmRNA VaccinesOvalbuminRNA, MessengerVaccines, SyntheticMicroparticle vaccinemRNASpray-dryingVaccine deliveryVaccines

Identifiers

PMID41241219
PMCPMC13224748

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.