Abstract: Single-domain antibodies that bind receptor tyrosine kinase (ROR1) are described. The single-domain antibodies can be used for multiple purposes including in research, imaging, diagnosis, and treatment of ROR1-related conditions. The disclosed single-domain antibodies can be used as anti-cancer therapeutics such as antibody-drug conjugates, multi-domain binding molecules, or recombinant receptors or can be used as cancer imaging/diagnostic agents.

Abstract: SARS-CoV-2 vaccines are described herein. The SARS-CoV-2 vaccine antigens can be presented on a circular tandem repeat protein (cTRP) scaffold as trimers or tetramers. The vaccines can be used to treat and/or reduce the risk of SARS-CoV-2 infection and to treat and/or reduce the risk of side effects associated with SARS-CoV-2 infection, such as SARS-CoV-2-related symptoms, syndromes, and complications.

Abstract: Engineered trimeric CD70 proteins for use in ex vivo T cell manufacturing are described. Use of the proteins during manufacturing creates expanded T cell populations with enhanced properties such as earlier proliferation in culture; selective expansion of nave and memory T cell subsets; longer persistence in vivo following administration to a subject; and improved therapeutic effect. Use of the proteins as therapeutics provide anti-cancer and anti-viral effects. The proteins can also be used as agonistic cell culture reagents in in vitro uses.

Abstract: Circular handed alpha-helical repeat proteins are described. The repeat proteins have a number of uses as scaffolds for geometrically precise, arrayed presentation of cell-signaling or immune-related protein and peptide epitopes, as well as numerous other therapeutic, diagnostic, and nanotechnological uses.

Abstract: The present disclosure provides compositions and methods for renal therapy. In various aspects, the present disclosure provides a composition comprising a knotted peptide, wherein upon administration to a subject the knotted peptide homes, targets, is directed to, accumulates in, migrates to, is retained by, and/or binds to renal tissue of the subject. In various aspects, the composition further comprises an active agent coupled to the knotted peptide. The composition, when administered to the subject, may induce protective preconditioning or acquired cytoresistance.

Abstract: Anti-CD33 antibodies are described. The anti-CD33 antibodies can bind within the V-set Ig-like domain or the C2-set Ig-like domain of CD33. Epitopes on the C2-set Ig-like domain can provide a “pan-binding” site, to which the cognate antibody will bind regardless of whether the CD33 molecule also contains the V-set domain (as in, for example, CD33FL) or not (as in, for example, CD33?E2). Alternative epitopes on the C2-set Ig-like domain are accessible for binding if the V-set domain is absent (e.g., as in CD33?E2). Antibodies that bind an epitope on the C2-set Ig-like domain (whether they exhibit pan or V-set absent binding) are directed at novel therapeutic targets and can increase therapeutic efficacy against CD33-related disorders. Also described are molecules comprising a binding-competent domain from at least one described anti-CD33 antibody, including scFvs, bi-specific antibody molecules, chimeric antigen receptors, and immunoconjugates. Methods of use are also provided.