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3E2 for COVID-19

3E2 has been reported as potentially beneficial for treatment of COVID-19. We have not reviewed these studies. See all other treatments.
Sun et al., Two antibodies show broad, synergistic neutralization against SARS-CoV-2 variants by inducing conformational change within the RBD, Protein & Cell, doi:10.1093/procel/pwad040
Abstract Continual evolution of the SARS-CoV-2 virus has allowed for its gradual evasion of neutralizing antibodies (nAbs) produced in response to natural infection or vaccination. The rapid nature of these changes has incited a need for the development of superior broad nAbs and/or the rational design of an antibody cocktail that can protect against the mutated virus strain. Here, we report two ACE2 competing nAbs—8H12 and 3E2—with synergistic neutralization but evaded by some Omicron subvariants. Cryo-EM reveals the two nAbs synergistic neutralizing virus through a rigorous pairing permitted by rearrangement of the 472-489 loop in the RBD to avoid steric clashing. Bispecific antibodies based on these two nAbs tremendously extend the neutralizing breadth and restore neutralization against recent variants including currently dominant XBB.1.5. Together, these findings expand our understanding of the potential strategies for the neutralization of SARS-CoV-2 variants toward the design of broad-acting antibody therapeutics and vaccines.
Please send us corrections, updates, or comments. c19early involves the extraction of over 100,000 datapoints from thousands of papers. Community updates help ensure high accuracy. Vaccines and treatments are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment, vaccine, or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.
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