Nanobody Therapeutics for SARS-CoV2

This technology includes the design and use of several nanobodies that bind to the SARS-CoV2 spike protein receptor binding domain and block spike protein interaction with the angiotensin converting enzyme 2 (ACE2) receptor. Nanobodies are 12-15 kDa single-domain antibody fragments that are more stable and easier to produce in large quantities compared to conventional antibodies. SARS-CoV2 is the virus responsible for the COVID19 pandemic. The SARS-CoV2 spike protein is responsible for viral entry into human cells via interaction with ACE2 on the cell surface.

SARS-CoV-2 Neutralizing Antibodies and Synthetic Nanobody Library Using a Humanized Llama Framework Region

NCATS has developed a highly diverse synthetic library that will allow for the rapid identification of novel nanobodies that bind to a wide arrange of target antigens. The humanized framework used to construct the library will facilitate the transition of lead candidates into patient studies. Several highly potent SARS-CoV-2 nanobodies (antibodies) have been identified and are available for further development.

NCATS is actively seeking licensing for the 1) a synthetic library and 2) the potent neutralizing antibodies with activity against SARS-CoV-2.

Evans Blue Dye Derivatives for Serum Albumin Labeling

The invention is an imaging agent and method of use for imaging blood pools and the lymphatic system. The imaging agent binds with high affinity to serum albumin, the most abundant serum protein, and can be tagged with several isotopes making it suitable for magnetic resonance imaging or positron emission tomographic imaging. To date, only very few blood-pool tracers have been introduced for positron emission tomography. The existing ones have short half-lives (20.4 min for 11C and 2.05 min for 15O) and thus can only be used in centers with an in-house cyclotron.