Cited by 28Inhalation and Respiratory Drug DeliveryInterstitial Lung Diseases and Idiopathic Pulmonary FibrosisAdvanced Drug Delivery Systems

Development of an Excipient-Free Peptide Dry Powder Inhalation for the Treatment of Pulmonary Fibrosis

Zhang, Yajie, MacKenzie, BreAnne, Koleng, John J., Maier, Esther, Warnken, Zachary N., Williams, Robert O.·2020·Molecular Pharmaceutics

Abstract

The caveolin scaffolding domain peptide (CSP) is being developed for the therapeutic intervention of a lethal lung disease, idiopathic pulmonary fibrosis. While direct respiratory delivery of CSP7 (a 7-mer fragment of CSP) is considered an effective route, proper formulation and processing of the peptide are required. First, air-jet milling technology was performed in order to micronize the neat peptide powder. Next, the fine particles were subjected to a stability study with physical and chemical characterizations. In addition, the in vivo efficacy of processed CSP7 powder was evaluated in an animal model of lung fibrosis. The results revealed that, with jet milling, the particle size of CSP7 was reduced to a mass median aerodynamic diameter of 1.58 ± 0.1 μm and 93.3 ± 3.3% fine particle fraction, optimal for deep lung delivery. A statistically significant reduction of collagen was observed in diseased lung tissues of mice that received CSP7 powder for inhalation. The particles remained chemically and physically stable after micronization and during storage. This work demonstrated that jet milling is effective in the manufacturing of a stable, excipient-free CSP7 inhalation powder for the treatment of pulmonary fibrosis.

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Crossref · 10.1021/acs.molpharmaceut.9b01085

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Authors
Zhang, Y., MacKenzie, B., Koleng, J. J., Maier, E., Warnken, Z. N., & Williams, R. O.
Affiliations
  • The University of Texas at Austin (US)
  • Lung Therapeutics Inc., 2600 Via Fortuna, Suite 360, Austin, Texas 78746, United States
Corresponding author
Williams, Robert O.
Venue
Molecular Pharmaceutics
Published
2020-01-08
Volume
17
Issue
2
Pages
632-644
ISSN
  • 1543-8384 (ISSN-L)
  • 1543-8392
OpenAlex
W2999188347
Cited by
27
References
94
Citations by year
2026: 1 · 2025: 6 · 2024: 1 · 2023: 4 · 2022: 9 · 2021: 3 · 2020: 3
FWCI
2.63
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Pharmaceutics (publishedVersion)
  • PubMed (publishedVersion)
Funders
Lung Therapeutics Inc. (UTA14-001400)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Inhalation and Respiratory Drug Delivery
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
Keywords
idiopathic pulmonary fibrosis, dry powder inhalation, air jet milling, micronization, particle size reduction, fine particle fraction, peptide stability
MeSH terms
Protein Domains, Administration, Inhalation, Aerosols, Animals, Chemistry, Pharmaceutical, Disease Models, Animal, Drug Compounding, Drug Stability, Excipients, Female, Mice, Inbred C57BL, Particle Size, Peptides, Powders, Pulmonary Fibrosis, Drug Delivery Systems, Treatment Outcome, Caveolins, Mice, Dry Powder Inhalers

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