13-04-2017 дата публикации
Номер: US20170101474A1
Принадлежит:
The present disclosure relates to compositions and methods comprising peptide molecules that mimic the binding and functional properties of native antibodies relative to their respective targets. Some embodiments comprise peptide-drug conjugates (PDCs) comprising the mimic peptides disclosed herein. The targets of these mimic peptides include epidermal growth factor receptor (EGFR), and human epidermal growth factor receptor 2 (HER2), vascular endothelial growth factor (VEGF), programmed cell death protein 1 (PD-1), and programmed death-ligand 1 (PD-L1). The present disclosure comprises application of the knob-socket computational model to design antibody mimics for proteins. 1. An isolated antibody mimic peptide comprising at least one of a motif sequence SEQ ID NO:78 or the reverse of said motif sequence , said motif sequence having Namino acids , wherein P is proline , W is tryptophan , E is glutamic acid , F is phenylalanine , Y is tyrosine , A is alanine , and each of X , X , X , Xand Xis any of 0 to 8 amino acids; and , wherein P is at amino acid position N/2 of the motif sequence or next thereto.2. The peptide of claim 1 , wherein the FY in the motif sequence is replaced with YW claim 1 , YL claim 1 , YI claim 1 , YV claim 1 , YF claim 1 , WY claim 1 , LY claim 1 , IY claim 1 , VY claim 1 , YY claim 1 , TYY claim 1 , TYW claim 1 , TYL claim 1 , TYI claim 1 , TYV claim 1 , TYF claim 1 , TWY claim 1 , TLY claim 1 , TIY claim 1 , TVY claim 1 , or TFY claim 1 , wherein L is leucine claim 1 , I is isoleucine claim 1 , and V is valine.3. The motif sequence of wherein the length of the sequence ranges from 7 to 25 amino acids.4. The motif sequence of wherein the sequence comprises 7 claim 2 , 10 claim 2 , 15 claim 2 , 20 claim 2 , or 25 amino acids.5. The peptide of claim 1 , wherein the peptide is conjugated to a substance.6. The peptide of claims 5 , wherein the substance is a therapeutic or a detective: agent.7. Method for diagnosing a disease comprising a ...
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