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Shrivastava, Tripti; Singh, Balwant; Rizvi, Zaigham Abbas; Verma, Rohit; Goswami, Sandeep; Vishwakarma, Preeti; Jakhar, Kamini; Sonar, Sudipta; Mani, Shailendra; Bhattacharyya, Sankar; Awasthi, Amit; Surjit, Milan
Frontiers in immunology, 05/2021, Letnik: 12Journal Article
The newly emerged novel coronavirus, SARS-CoV-2, the causative agent of COVID-19 has proven to be a threat to the human race globally, thus, vaccine development against SARS-CoV-2 is an unmet need driving mass vaccination efforts. The receptor binding domain of the spike protein of this coronavirus has multiple neutralizing epitopes and is associated with viral entry. Here we have designed and characterized the SARS-CoV-2 spike protein fragment 330-526 as receptor binding domain 330-526 (RBD ) with two native glycosylation sites (N331 and N343); as a potential subunit vaccine candidate. We initially characterized RBD biochemically and investigated its thermal stability, humoral and T cell immune response of various RBD protein formulations (with or without adjuvant) to evaluate the inherent immunogenicity and immunomodulatory effect. Our result showed that the purified RBD immunogen is stable up to 72 h, without any apparent loss in affinity or specificity of interaction with the ACE2 receptor. Upon immunization in mice, RBD generates a high titer humoral response, elevated IFN-γ producing CD4+ cells, cytotoxic T cells, and robust neutralizing antibodies against live SARS-CoV-2 virus. Our results collectively support the potential of RBD as a promising vaccine candidate against SARS-CoV-2.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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