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10.1021/acs.analchem.1c00614

http://scihub22266oqcxt.onion/10.1021/acs.analchem.1c00614
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34011150!ä!34011150

suck abstract from ncbi


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pmid34011150      Anal+Chem 2021 ; 93 (21): 7690-7698
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  • Development and Application of Human Coronavirus Protein Microarray for Specificity Analysis #MMPMID34011150
  • Du PX; Chou YY; Santos HM; Keskin BB; Hsieh MH; Ho TS; Wang JY; Lin YL; Syu GD
  • Anal Chem 2021[Jun]; 93 (21): 7690-7698 PMID34011150show ga
  • Coronavirus is an enveloped RNA virus that causes mild to severe respiratory diseases in humans, including HKU1-CoV, 229E-CoV, NL63-CoV, OC43-CoV, SARS-CoV, MERS-CoV, and SARS-CoV-2. Due to the outbreak of SARS-CoV-2, it is important to identify the patients and investigate their immune responses. Protein microarray is one of the best platforms to profile the antibodies in the blood because of its fast, multiplexed, and sensitive nature. To fully understand the immune responses and biological specificities, this study developed a human coronavirus (HCoV) protein microarray and included all seven human coronaviruses and three influenza viruses. Each protein was printed in triplicate and formed 14 identical blocks per array. The HCoV protein microarray showed high reproducibility and sensitivity to the monoclonal antibodies against spike and nucleocapsid protein with detection limits of 10-200 pg. The HCoV proteins that were immobilized on the array were properly folded and functional by showing interactions with a known human receptor, e.g., ACE2. By profiling the serum IgG and IgA from 32 COVID-19 patients and 36 healthy patients, the HCoV protein microarray demonstrated 97% sensitivity and 97% specificity with two biomarkers. The results also showed the cross-reactivity of IgG and IgA in COVID-19 patients to spike proteins from various coronaviruses, including that from SARS-CoV, HKU1-CoV, and OC43-CoV. Finally, an innate immune protein named surfactant protein D showed broad affinities to spike proteins in all human coronaviruses. Overall, the HCoV protein microarray is multiplexed, sensitive, and specific, which is useful in diagnosis, immune assessment, biological development, and drug screening.
  • |*COVID-19[MESH]
  • |*Coronavirus OC43, Human[MESH]
  • |Humans[MESH]
  • |Protein Array Analysis[MESH]
  • |Reproducibility of Results[MESH]
  • |SARS-CoV-2[MESH]


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