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The Rational Design of Therapeutic Peptides for Aminopeptidase N using a Substrate-Based Approach

Journal Article · · Scientific Reports

The M1 family of metalloproteases represents a large number of exopeptidases that cleave single amino acid residues from the N-terminus of peptide substrates. One member of this family that has been well studied is aminopeptidase N (APN), a multifunctional protease known to cleave biologically active peptides and aide in coronavirus entry. The proteolytic activity of APN promotes cancer angiogenesis and metastasis making it an important target for cancer therapy. To understand the substrate specificity of APN for the development of targeted inhibitors, we used a global substrate profiling method to determine the P1–P4' amino acid preferences. Here, the key structural features of the APN pharmacophore required for substrate recognition were elucidated by x-ray crystallography. By combining these substrate profiling and structural data, we were able to design a selective peptide inhibitor of APN that was an effective therapeutic both in vitro and in vivo against APN-expressing prostate cancer models.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Inst. of Health
OSTI ID:
1430325
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

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Cited By (7)

Neutral metalloaminopeptidases APN and MetAP2 as newly discovered anticancer molecular targets of actinomycin D and its simple analogs journal June 2018
Peptides as Therapeutic Agents for Inflammatory-Related Diseases journal September 2018
Beyond function: Engineering improved peptides for therapeutic applications journal September 2019
Phosphinic Dehydrodipeptides: Diversification of the P1′ Residue with the Morita–Baylis–Hillman Acetates and Inhibition of Alanyl Aminopeptidases journal January 2020
Quantitative Multiplex Substrate Profiling of Peptidases by Mass Spectrometry journal January 2019
Distinct Epitopes on CD13 Mediate Opposite Consequences for Cell Adhesion journal January 2018
Molecular Imaging of Aminopeptidase N in Cancer and Angiogenesis journal June 2018

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