43 results about "Lethal factor" patented technology

Disclosed herein is a pharmacophore model for inhibiting anthrax lethal factor protease activity which comprises a first aromatic center A, a second aromatic center B, a first polar center C, a second polar center D, a third polar center E, and a neutral linker F. In some embodiments, the distance between the first aromatic center A and the neutral linker F is about 4.7 to about 6.7 Å, preferably about 5.7 Å. In some embodiments, the distance between the neutral linker F and the second aromatic center B is about 3.4 to about 4.4 Å, preferably about 3.9 Å. In some embodiments, the distance between first aromatic center A and the first polar center C is about 5.5 to about 7.5 Å, preferably about 6.5 Å. In some embodiments, the distance between the first aromatic center A and the second polar center D is about 4.6 to about 6.6 Å, preferably about 5.6 Å. In some embodiments, the distance between the second aromatic center B and the second polar center D is about 3.6 to about 4.6 Å, preferably about 4.1 Å. In some embodiments, the distance between the second aromatic center B and the third polar center E is about 2.6 to about 3.6 Å, preferably about 3.1 Å. In some embodiments, the distance between the first polar center C and the third polar center E is about 15.6 to about 19.6 Å, preferably about 17.6 Å. Also disclosed are small molecules fitting the pharmacophore model and compositions and methods of using thereof.

The invention discloses an antibody of a humanized anti-anthrax protective antigen PA and an application thereof. According to the antibody, a heavy chain variable region has an amino acid sequence as shown in SEQ ID NO:4; a light chain variable region has an amino acid sequence as shown in SEQ ID NO:4; a heavy chain constant region has an amino acid sequence as shown in SEQ ID NO:6; and a light chain constant region has an amino acid sequence as shown in SEQ ID NO:8. The antibody can be specifically combined with the anthrax protective antigen (PA) and can be used for preventing a lethal factor LF so as to play a protective role.

The present invention provides methods of specifically targeting compounds to cells overexpressing matrix metalloproteinases, plasminogen activators, or plasminogen activator receptors, by administering a compound and a mutant protective antigen protein comprising a matrix metalloproteinase or a plasminogen activator-recognized cleavage site in place of the native protective antigen furin-recognized cleavage site, wherein the mutant protective antigen is cleaved by a matrix metalloproteinase or a plasminogen activator overexpressed by the cell, thereby translocating into the cell a compound comprising a lethal factor polypeptide comprising a protective antigen binding site.