Abstract: Peptides that home, target, migrate to, are directed to, are retained by, or accumulate in and/or binds to the cartilage of a subject are disclosed. Pharmaceutical compositions and uses for peptides or peptide-active agent complexes comprising such peptides are also disclosed. Such compositions can be formulated for targeted delivery of a drug to a target region, tissue, structure or cell in the cartilage. Targeted compositions of the disclosure can deliver peptide or peptide-active agent complexes to target regions, tissues, structures or cells targeted by the peptide.

Abstract: Peptides that home, target, migrate to, are directed to, are retained by, or accumulate in and/or binds to the cartilage of a subject are disclosed. Pharmaceutical compositions and uses for peptides or peptide-active agent complexes comprising such peptides are also disclosed. Such compositions can be formulated for targeted delivery of a drug to a target region, tissue, structure or cell in the cartilage. Targeted compositions of the disclosure can deliver peptide or peptide-active agent complexes to target regions, tissues, structures or cells targeted by the peptide.

Abstract: Described herein are peptides and variants thereof as well as peptide constructs comprising peptides conjugated to, linked to, or fused to agents, wherein the peptides and peptide constructs are capable of binding TfR. Binding of a peptide or peptide construct as described herein to TfR can enable transcytosis across an endothelial layer, e.g., the blood brain barrier, or the crossing of a cell membrane. Pharmaceutical compositions and uses of peptides and peptide constructs, as well as methods of designing and manufacturing such peptides and peptide constructs, to treat a disease or condition are also described herein.

Abstract: Peptides that home, target, migrate to, are directed to, are retained by, or accumulate in and/or binds to the cartilage of a subject are disclosed. Pharmaceutical compositions and uses for peptides or peptide-active agent complexes comprising such peptides are also disclosed. Such compositions can be formulated for targeted delivery of a drug to a target region, tissue, structure or cell in the cartilage. Targeted compositions of the disclosure can deliver peptide or peptide-active agent complexes to target regions, tissues, structures or cells targeted by the peptide.

Abstract: Peptides that home, target, migrate to, are directed to, are retained by, or accumulate in and/or binds to the cartilage of a subject are disclosed. Pharmaceutical compositions and uses for peptides or peptide-active agent complexes comprising such peptides are also disclosed. Such compositions can be formulated for targeted delivery of a drug to a target region, tissue, structure or cell in the cartilage. Targeted compositions of the disclosure can deliver peptide or peptide-active agent complexes to target regions, tissues, structures or cells targeted by the peptide.

Abstract: Peptides that are stable to denaturation and degradation by reducing agents, proteases, temperature, and low pH environments are disclosed. Pharmaceutical compositions and uses for peptides, peptide-active agent conjugates, and peptide-detectable agent conjugates comprising such peptides are also disclosed. Peptide compositions, peptide conjugate compositions, and pharmaceutical compositions can be formulated for various routes of delivery, such as oral delivery, and for deliver to various compartments of the body. Peptides of this disclosure are stable and display enhanced pharmacokinetics after such delivery.

Abstract: Peptides that home, target, migrate to, are directed to, are retained by, or accumulate in amd/or binds to the cartilage of a subject are disclosed. Pharmaceutical compositions and uses for peptides or peptide-active agent complexes comprising such peptides are also disclosed. Such compositions can be formulated for targeted delivery of a drug to a target region, tissue, structure or cell in the cartilage. Targeted compositions of the disclosure can deliver peptide or peptide-active agent complexes to target regions, tissues, structures or cells targeted by the peptide.

Abstract: Peptides that home, distribute to, target, are directed to, or accumulate in tumors, cancers, or diseased cells are disclosed. Peptides that cross the blood brain barrier and home, distribute to, target, are directed to, or accumulate in the brain and in a specific region of the brain are also disclosed. Pharmaceutical compositions and uses for peptides or peptide-active agent complexes comprising such peptides are additionally disclosed. Such compositions can be formulated for targeted or untargeted delivery of a drug to a target region, tissue, structure or cell. Targeted compositions of the disclosure can deliver peptide or peptide-active agent complexes to target regions, tissues, structures or cells targeted by the peptide.

Abstract: Methods and systems for producing fusion proteins and peptides are disclosed. Fusion proteins and peptides created using the methods are also provided. Also provided are methods of using the fusion proteins and peptides produced according to the present disclosure.

Abstract: Methods and systems for producing fusion proteins and peptides are disclosed. Fusion proteins and peptides created using the methods are also provided. Also provided are methods of using the fusion proteins and peptides produced according to the present disclosure.

Abstract: Methods and systems for discovering drug candidates are disclosed. Methods and systems can include generating libraries of potential drug candidates (e.g., libraries of peptides) that can be screened to identify sub-libraries of potential drug candidates (e.g., sub-libraries of peptides) having selected pharmacological properties. Methods of making and using peptide libraries are also provided. D-amino acid chlorotoxins and D-amino acid chlorotoxin variants are also provided.

Abstract: Methods and systems for discovering drug candidates are disclosed. Methods and systems can include generating libraries of potential drug candidates (e.g., libraries of peptides) that can be screened to identify sub-libraries of potential drug candidates (e.g., sub-libraries of peptides) having selected pharmacological properties. Methods of making and using peptide libraries are also provided. D-amino acid chlorotoxins and D-amino acid chlorotoxin variants are also provided.