| Author | Prado, Nayra Oliveira | |
| Author | Marin, Anelis Maria | |
| Author | Lalli, Larissa Araujo | |
| Author | Sanchuki, Heloisa Bruna Soligo | |
| Author | Wosniaki, Denise Kusma | |
| Author | Nardin, Jeanine Marie | |
| Author | Morales, Hugo Manoel Paz | |
| Author | Blanes, Lucas | |
| Author | Zanette, Dalila Luciola | |
| Author | Aoki, Mateus Nóbrega | |
| Access date | 2024-10-20T22:21:00Z | |
| Available date | 2024-10-20T22:21:00Z | |
| Document date | 2024 | |
| Citation | PRADO, Nayra Oliveira et al. Development and evaluation of a lyophilization protocol for colorimetric RT-LAMP diagnostic assay for COVID-19. Scientific Reports, v. 14, n. 1, p. 1-12, May 2024. | en_US |
| ISSN | 2045-2322 | en_US |
| URI | https://www.arca.fiocruz.br/handle/icict/66614 | |
| Sponsorship | CNPq | en_US |
| Language | eng | en_US |
| Publisher | Nature Publishing Group | en_US |
| Rights | open access | en_US |
| Subject in Portuguese | Liofilização | en_US |
| Subject in Portuguese | COVID-19 | en_US |
| Subject in Portuguese | Kit colorimétrico | en_US |
| Title | Development and evaluation of a lyophilization protocol for colorimetric RT‑LAMP diagnostic assay for COVID‑19 | en_US |
| Type | Article | en_US |
| DOI | 10.1038/s41598-024-61163-7 | |
| Abstract | Molecular diagnostics involving nucleic acids (DNA and RNA) are regarded as extremely functional tools. During the 2020 global health crisis, efforts intensified to optimize the production and delivery of molecular diagnostic kits for detecting SARS-CoV-2. During this period, RT-LAMP emerged as a significant focus. However, the thermolability of the reagents used in this technique necessitates special low-temperature infrastructure for transport, storage, and conservation. These requirements limit distribution capacity and necessitate cost-increasing adaptations. Consequently, this report details the development of a lyophilization protocol for reagents in a colorimetric RT-LAMP diagnostic kit to detect SARS-CoV-2, facilitating room-temperature transport and storage. We conducted tests to identify the ideal excipients that maintain the molecular integrity of the reagents and ensure their stability during room-temperature storage and transport. The optimal condition identified involved adding 5% PEG 8000 and 75 mM trehalose to the RT-LAMP reaction, which enabled stability at room temperature for up to 28 days and yielded an analytical and diagnostic sensitivity and specificity of 83.33% and 90%, respectively, for detecting SARS-CoV-2. This study presents the results of a lyophilized colorimetric RT-LAMP COVID-19 detection assay with diagnostic sensitivity and specificity comparable to RT-qPCR, particularly in samples with high viral load. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Hospital Erasto Gaertner. Curitiba, PR, Brasil. | en_US |
| Affilliation | Hospital Erasto Gaertner. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Carlos Chagas. Laboratório de Ciência e Tecnologia Aplicada em Saúde. Curitiba, PR, Brasil. | en_US |
| Subject | Lyophilization | en_US |
| Subject | RT-LAMP | en_US |
| Subject | Colorimetric kit | en_US |
| Subject | COVID-19 | en_US |
| DeCS | COVID-19 | en_US |
| DeCS | Liofilização | en_US |
