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Drug Discovery & Optimization with Peptide Libraries

Drug Discovery & Optimization JPT applies its proprietary peptide technologies, bioinformatic and medicinal chemistry know-how in the following areas: Our experience in drug discovery and optimization can be applied in peptide based drug and vaccine projects,

Written by Peptide Therapy Guide Editorial Team
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This guide cannot diagnose a condition or recommend a personal treatment plan. Discuss medical questions with a qualified professional.

Drug Discovery & Optimization

JPT applies its proprietary peptide technologies, bioinformatic and medicinal chemistry know-how in the following areas:

Our experience in drug discovery and optimization can be applied in peptide based drug and vaccine projects, in the discovery of peptidic additives for the cosmetic and nutritional industry, in the development of affinity ligands for the purification of biomolecules, as well as in content determination for novel immune diagnostics.

Here are some example applications:

Target identification and validation

High-throughput screening

Binding affinity and specificty

Structure-activity relationship (SAR) studies:

Immunotherapy development:

Peptides in drug delivery systems

Applications

Discovery of peptidic agonistic or antagonistic ligands for proteins, protein complexes or antibodies

Optimization of peptides in terms of binding affinity, agonistic or antagonistic efficacy and physicochemical and PK properties

Identification and optimization of affinity ligands for the purification of therapeutic proteins or antibodies

Identification and optimization for the development of alternative binding assays for complicated target proteins (e.g. membrane proteins)

Development of peptides as active ingredients or excipients in drug formulations (e.g. to increase stability) or nutritional and cosmetic products, respectively

References

Octaarginine Improves the Efficacy of Nitazoxanide against Cryptosporidium parvumNguyen-Ho-Bao et al., Pathogens (2022) - PMID: 35745507

Immundiagnostische Mittel und Verfahren für den Nachweis und die Differenzierung von Coronavirus-Infektionen, Patent application DE No. 10 2020 125 915.8 (2020)

Detection of Neurogenerative Diseases Moussaoui et al, Patent WO 2017/153922 (2017)

Peptide Mimotopes of the CD3 T-Cell Co-Receptor Epsilon Chain and uses thereof Schnatbaum et al, Patent WO 2017/008844 (2015)

Peptide Mimotopes of Claudin 18.2 and uses thereof Schnatbaum et al, Patent WO 2015/113576 (2014)

Peptide Microarrays Enable Rapid Mimotope Optimization for Pharmacokinetic Analysis of the Novel Therapeutic Antibody IMAB362 Schnatbaum et al., Biotechnol J. (2014) - PMID: 24497417

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Applications in Research and Development

Peptide libraries have become the lingua franca binding discovery biology to translational medicine, the common substrate on which cancer immunologists, vaccinologists and autoimmunity researchers can inscribe and interrogate their questions. By compressing whole proteomes (or specific subsets thereof) into addressable libraries of chemically defined fragments, they transform previously unanswerable biological questions into high-resolution datasets ripe for mining for epitopes, neoantigens, mimicry motifs, tolerogenic sequences, or any combination thereof. The same physical reagents that map a tumor-specific CD8+ response can, with a modicum of reformatting, uncover the B-cell determinants of an emerging pathogen or the self-peptides that overcome thymic tolerance. As such, peptide libraries are intellectual multi-tools that drive faster iterative cycles of target identification, lead optimisation and mechanism-of-action studies across the entire spectrum of immune-mediated disease.

Source: creative-peptides.com ↗

Supporting Clinical Trials! - Trial Grade Peptide Libraries

Published on 17/04/2026 The transition from discovery research to clinical development is one of the most critical phases in medicinal research. Data generated in early screening and target discovery must now be translated into robust, reproducible, and regulatory-compliant tools suitable for clinical studies. This requires peptide libraries to be produced under stringent production conditions. JPT’s Trial Grade and Premium Grade peptide libraries support: Immune monitoring and response profiling Biomarker validation Patient stratification Assay standardization across trial sites In this final newsletter, we highlight how JPT supports clinical research through Trial Grade and Premium Grade peptides. Trial Track Peptide Libraries As the name implies, PepTrack Trial Track is tailored to support peptide-based applications in clinical trials, ensuring that peptides used in clinical assays meet the quality and reproducibility requirements needed for reliable clinical data generation. Applications: Antigen-specific stimulation of T-cells for immune monitoring or immunotherapy in clinical trials Quality: For even higher quality, please check out our Clinical Peptides & Pools! Purity: > 80%, 90%, 95% or 97% guaranteed for each peptide Capping: Truncated peptides are capped after each synthesis step. This eliminates the major source of false positive T-cell responses, deletion peptides. QC /QA: LC-MS for each peptide Peptide Length: 15 aa Amount per Peptide: 1-4mg or 5-10mg Delivery Format: Freeze-dried in 96 tube racks Delivery Time: 4-5 weeks Minimum Order: 24 peptides But wait, there is more! Premium Grade PepMix™ – Bridging Research and Clinical Use Did you know we also offer Premium Grade peptide control pools? At the interface between discovery and clinical research, Premium Grade PepMix™ provides a highly standardized solution for immune monitoring and translational studies. Compared to regular control pools, Premium Grade PepMix™ offers: High purity (>90%) and consistency (validated pooling methods) Optimized performance in immunological assays Recurrent Performance testing Cytotox, endoxin, steriliy testing Updated CoA 637,50after each test Controlled synthesis processes Additional capping step to each peptide synthesis step to prevent de novo epitope formation High batch-to-batch consistency Comprehensive analytical documentation Customized plate and vial formats Support for longitudinal and multi-center studies

Source: jpt.com ↗
Practical and safety references

These excerpts are educational, not personalised medical instructions.

Potential benefits

Benefits of PepTrack™ Peptide Libraries

Flexible peptide libraries tailored for cellular assays Best pricing in industry! Custom Peptide Synthesis avoiding toxic inhibition or de novo epitopes Aliquotation, pooling and advanced QC (UPLC, AAA, residual solvent determination, stability testing, etc.) Post-Translational Modifications (PTMs) available Proven track record for applications in clinical studies

Source: jpt.com ↗
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Peptide Therapy Guide Editorial Team

Editorial team for Peptide Therapy Guide.

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