Peptide Drug Design

17 articles in Peptide Drug Design

Synthesis & Manufacturing

Peptide Solubility & Aggregation in Formulation

A single amino acid substitution transformed a reliable formulation into a cloudy suspension, revealing how peptide solubility aggregation and precipitation remain unpredictable even when protocols stay unchanged. The phenomenon—governed by charge distribution, pH buffering, and hydrophobic clusteri

AdminUpdated Aug 1010 min

Synthesis & Manufacturing

Peptide Drug Metabolism: Enzymatic Degradation Guide

In clinical pharmacology units worldwide, synthetic peptides face a fundamental barrier: the body's enzymes rapidly degrade them, often within minutes, a process called peptide drug metabolism that shapes which candidates advance to human trials and which never leave the animal-testing phase.

AdminUpdated Aug 710 min

Synthesis & Manufacturing

Peptide PTM: Phosphorylation & Glycosylation

When Frederick Banting's team discovered insulin in 1921, they faced an unexpected obstacle: the hormone degraded within hours, requiring multiple injections daily. Today, peptide post-translational modifications like phosphorylation and glycosylation offer a solution to this ancient stability probl

AdminUpdated Aug 410 min

Synthesis & Manufacturing

Peptide Manufacturing Scale-Up Guide

In November 2023, Novo Nordisk committed $6 billion to expanding its Danish facility—not to improve a drug's efficacy, but to scale peptide manufacturing to meet global demand that had far exceeded production capacity.

AdminUpdated Aug 210 min

Synthesis & Manufacturing

Disulfide Bond Formation in Peptide Synthesis

Insulin's two disulfide bonds are not optional features—they are structural prerequisites for receptor binding, a fact that reveals a central challenge in peptide synthesis: controlling oxidation and cyclization reactions that determine whether a peptide folds into its active form or remains an iner

AdminUpdated Jul 3013 min

Synthesis & Manufacturing

Peptide Hydrophobicity GRAVY Score Guide

The HIV-1 TAT peptide crosses cell membranes efficiently despite carrying a negative GRAVY score—a contradiction that reveals how peptide hydrophobicity predictions often diverge from observed membrane penetration behavior.

AdminUpdated Jul 3014 min

Synthesis & Manufacturing

Peptide Immunogenicity HLA MHC Epitope Prediction

In 1998, a reformulation of the blood-disorder drug Eprex triggered an unexpected immune response in European patients, revealing how peptide immunogenicity and HLA binding can transform a stable therapeutic into a liability.

AdminUpdated Jul 3010 min

Synthesis & Manufacturing

Peptide Purity Testing: HPLC vs Mass Spectrometry

A purity certificate claiming 99 percent tells researchers almost nothing without supporting chromatography data—HPLC and mass spectrometry measure different aspects of peptide composition, and conflating them obscures what a sample actually contains.

AdminUpdated Jul 3010 min

Synthesis & Manufacturing

Peptide Bioavailability: Delivery Methods

Desmopressin achieves 85% absolute bioavailability via subcutaneous injection but only 0.16% via intranasal spray—a gap that illustrates how peptide bioavailability depends as much on delivery route as on molecular structure.

AdminUpdated Jul 3013 min

Synthesis & Manufacturing

Peptide Glycation Maillard Reaction Storage

Peptides stored at room temperature alongside common pharmaceutical excipients can lose half their functional integrity within two days—not from contamination, but from the Maillard reaction, a spontaneous chemical cascade of peptide glycation that operates silently in storage vials with no visible

AdminUpdated Jul 3012 min

Synthesis & Manufacturing

Peptide Oral vs Injection Delivery Comparison

In September 2019, the FDA approved oral semaglutide, marking the first successful oral GLP-1 peptide after four decades of failed attempts—a milestone that reveals why peptide oral bioavailability remains far more difficult to achieve than injection-based delivery.

AdminUpdated Jul 2810 min

Synthesis & Manufacturing

Peptide Storage Stability: Temperature, pH, Degradation

A peptide vial left on a kitchen counter appears unchanged, yet chemical degradation begins within weeks when stored outside strict cold-chain conditions—a pattern biochemistry labs confirmed in a 2021 stability survey that examined how temperature, pH, and handling protocols affect peptide storage

AdminUpdated Jul 2810 min