Title |
Discovery and Characterization of a Potent Interleukin-6 Binding Peptide with Neutralizing Activity In Vivo
|
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Published in |
PLOS ONE, November 2015
|
DOI | 10.1371/journal.pone.0141330 |
Pubmed ID | |
Authors |
Sheila Ranganath, Ashok Bhandari, Nicole Avitahl-Curtis, Jaimee McMahon, Derek Wachtel, Jenny Zhang, Christopher Leitheiser, Sylvie G. Bernier, Guang Liu, Tran T. Tran, Herodion Celino, Jenny Tobin, Joon Jung, Hong Zhao, Katie E. Glen, Chris Graul, Aliesha Griffin, Wayne C. Schairer, Carolyn Higgins, Tammi L. Reza, Eva Mowe, Sam Rivers, Sonya Scott, Alex Monreal, Courtney Shea, Greg Bourne, Casey Coons, Adaline Smith, Kim Tang, Ramya A. Mandyam, Jaime Masferrer, David Liu, Dinesh V. Patel, Angelika Fretzen, Craig A. Murphy, G. Todd Milne, Mark L. Smythe, Kenneth E. Carlson |
Abstract |
Interleukin-6 (IL-6) is an important member of the cytokine superfamily, exerting pleiotropic actions on many physiological processes. Over-production of IL-6 is a hallmark of immune-mediated inflammatory diseases such as Castleman's Disease (CD) and rheumatoid arthritis (RA). Antagonism of the interleukin IL-6/IL-6 receptor (IL-6R)/gp130 signaling complex continues to show promise as a therapeutic target. Monoclonal antibodies (mAbs) directed against components of this complex have been approved as therapeutics for both CD and RA. To potentially provide an additional modality to antagonize IL-6 induced pathophysiology, a peptide-based antagonist approach was undertaken. Using a combination of molecular design, phage-display, and medicinal chemistry, disulfide-rich peptides (DRPs) directed against IL-6 were developed with low nanomolar potency in inhibiting IL-6-induced pSTAT3 in U937 monocytic cells. Targeted PEGylation of IL-6 binding peptides resulted in molecules that retained their potency against IL-6 and had a prolongation of their pharmacokinetic (PK) profiles in rodents and monkeys. One such peptide, PN-2921, contained a 40 kDa polyethylene glycol (PEG) moiety and inhibited IL-6-induced pSTAT3 in U937 cells with sub-nM potency and possessed 23, 36, and 59 h PK half-life values in mice, rats, and cynomolgus monkeys, respectively. Parenteral administration of PN-2921 to mice and cynomolgus monkeys potently inhibited IL-6-induced biomarker responses, with significant reductions in the acute inflammatory phase proteins, serum amyloid A (SAA) and C-reactive protein (CRP). This potent, PEGylated IL-6 binding peptide offers a new approach to antagonize IL-6-induced signaling and associated pathophysiology. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 1 | 33% |
Japan | 1 | 33% |
Unknown | 1 | 33% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 3 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 1 | 1% |
Unknown | 72 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 17 | 23% |
Student > Ph. D. Student | 14 | 19% |
Student > Bachelor | 7 | 10% |
Other | 6 | 8% |
Student > Master | 6 | 8% |
Other | 8 | 11% |
Unknown | 15 | 21% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 15 | 21% |
Chemistry | 11 | 15% |
Agricultural and Biological Sciences | 9 | 12% |
Medicine and Dentistry | 4 | 5% |
Pharmacology, Toxicology and Pharmaceutical Science | 4 | 5% |
Other | 13 | 18% |
Unknown | 17 | 23% |