Human endogenous retrovirus-K (HERV-K) belongs to the β-retrovirus-like supergroup of viruses, and it has been previously demonstrated that the expression of HERV-K subtype HML-2 envelope (Env) in human neuronal cultures or in transgenic mice resulted in neurotoxicity and neurodegeneration.

Researchers from Boston Children’s Hospital and Harvard Medical School reported the discovery and preclinical evaluation of SP1-77, a novel humanized monoclonal IgG-κ antibody targeting the receptor-binding-domain (RBD) of spike (S) glycoprotein of all SARS-CoV-2 variants.

A new vaccine that uses the native-like HIV-1 envelope (Env) trimer CH505 and a Toll-like receptor (TLR) 7/8 agonist adjuvant, successfully evaluated in macaques, generated potent polyclonal neutralizing antibodies (nAbs) and a high protection against the infection of the homologous simian-human immunodeficiency virus (SHIV).