The present invention relates to methods and reagents for use in site-selective modification of proteins having lysine residues with functionalized peptides using a chemoenzymatic microbial transglutaminase-mediated reaction. The functionalized proteins may be used for study or therapeutic uses.

The proteasome inhibitors of this invention include peptide-based compounds with a short linear sequence of amino acids. An oxo or thio group is attached to the N-terminal amino acid. A protein-reactive electrophilic group such as an epoxyketone, an aziridinylketone, or a beta-lactone is attached to the C-terminal amino acid. Upon contact with a proteasome complex in a target cell, the electrophilic group reacts with a functional group in or near a binding pocket or active site of the proteasome, forming a covalent bond and thereby inactivating the proteasome. These and other proteasome inhibitors can be screened for binding affinity and an ability to selectively eliminate senescent cells or cancer cells. Compounds that selectively remove senescent cells can be developed for the treatment of conditions such as osteoarthritis, ophthalmic disease, pulmonary disease, and atherosclerosis.

The present invention provides one or more compounds of formula (I) for conjugation to small molecules, polymers, peptides, proteins, antibodies, antibody fragments etc.

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Provided is a novel peptide having ACE inhibitory activity. Specifically, provided is a tripeptide consisting of Leu-Arg-Ala.

The stabilization of subtilisins by peptide aldehydes, hydrosulfite adducts thereof or peptide methyl ketones, is particularly effective in liquid ADW detergents which contain a strong sequestering builder.

Prodrugs of an NMDA antagonist, (S)-1-phenyl-2-(pyridin-2-yl)ethanamine, useful for the treatment of depression (particularly major depressive disorder) or pain; compositions comprising them, and methods of making them.

The present disclosure relates to compositions and methods of carbonic anhydrase IX inhibitors. The present disclosure also relates to targeting conjugates of carbonic anhydrase IX inhibitors as therapeutics and imaging agents. The present disclosure also relates to the use of targeting conjugates of carbonic anhydrase IX inhibitors in imaging methods and cancer therapy.

The present invention is directed compositions for delivery of RNA interference (RNAi) triggers to integrin positive tumor cells in vivo. The compositions comprise RGD ligand-targeted amphipathic membrane active polyamines reversibly modified with enzyme cleavable dipeptide-amidobenzyl-carbonate masking agents. Modification masks membrane activity of the polymer while reversibility provides physiological responsiveness. The reversibly modified polyamines (dynamic polyconjugate or conjugate) are further covalently linked to an RNAi trigger.

The present disclosure relates to compositions for inhibiting proteases, methods for synthesizing the compositions, and methods of using the disclosed protease inhibitors. Aspects of the invention include aza-peptide aldehyde and ketone compositions that inhibit proteases. The disclosed compounds, pharmaceutically acceptable salts, pharmaceutically acceptable derivatives, prodrugs, or combinations thereof can be used to treat disease or pathological conditions related to the activity of proteases associated with a specific disease or condition.

The present disclosure relates to Quinstatin compounds, pharmaceutical compositions comprising such compounds, kits, and methods for using such compounds or pharmaceutical compositions.