| Autor: |
Tomoya Yoshinari, Katsuhiko Hayashi, Shouhei Hirose, Kenji Ohya, Takahiro Ohnishi, Maiko Watanabe, Satoshi Taharaguchi, Hirohisa Mekata, Takahide Taniguchi, Takuya Maeda, Yuta Orihara, Rieko Kawamura, Sakura Arai, Yoshiro Saito, Yukihiro Goda, Yukiko Hara-Kudo |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Analytical chemistry. 94(10) |
| ISSN: |
1520-6882 |
| Popis: |
The most common diagnostic method used for coronavirus disease-2019 (COVID-19) is real-time reverse transcription polymerase chain reaction (PCR). However, it requires complex and labor-intensive procedures and involves excessive positive results derived from viral debris. We developed a method for the direct detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in nasopharyngeal swabs, which uses matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI-ToF MS) to identify specific peptides from the SARS-CoV-2 nucleocapsid phosphoprotein (NP). SARS-CoV-2 viral particles were separated from biological molecules in nasopharyngeal swabs by an ultrafiltration cartridge. Further purification was performed by an anion exchange resin, and purified NP was digested into peptides using trypsin. The peptides from SARS-CoV-2 that were inoculated into nasopharyngeal swabs were detected by MALDI-ToF MS, and the limit of detection was 10 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
