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PASylation: a biological alternative to PEGylation for extending the plasma half-life of pharmaceutically active proteins

Open access
Schlapschy, M., Binder, U., Borger, C., Theobald, I., Wachinger, K., Kisling, S., Haller, D., Skerra, A.·2013·Protein Engineering Design and Selection

Abstract

A major limitation of biopharmaceutical proteins is their fast clearance from circulation via kidney filtration, which strongly hampers efficacy both in animal studies and in human therapy. We have developed conformationally disordered polypeptide chains with expanded hydrodynamic volume comprising the small residues Pro, Ala and Ser (PAS). PAS sequences are hydrophilic, uncharged biological polymers with biophysical properties very similar to poly-ethylene glycol (PEG), whose chemical conjugation to drugs is an established method for plasma half-life extension. In contrast, PAS polypeptides offer fusion to a therapeutic protein on the genetic level, permitting Escherichia coli production of fully active proteins and obviating in vitro coupling or modification steps. Furthermore, they are biodegradable, thus avoiding organ accumulation, while showing stability in serum and lacking toxicity or immunogenicity in mice. We demonstrate that PASylation bestows typical biologics, such as interferon, growth hormone or Fab fragments, with considerably prolonged circulation and boosts bioactivity in vivo.

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Crossref · 10.1093/protein/gzt023

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Metadata

Authors
Schlapschy, M., Binder, U., Borger, C., Theobald, I., Wachinger, K., Kisling, S., Haller, D., & Skerra, A.
Venue
Protein Engineering Design and Selection
Published
2013-06-10
Volume
26
Issue
8
Pages
489-501
ISSN
  • 0269-2139 (ISSN-L)
  • 1741-0126
  • 1741-0134
OpenAlex
W2161892929
Cited by
342
References
3
FWCI
9.01
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: PASylation: a biological alternative to PEGylation for extending the plasma half-life of pharmaceutically active proteins. https://app.cochat.ai/papers/10.1093/protein/gzt023
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Schlapschy, M., Binder, U., Borger, C., Theobald, I., Wachinger, K., Kisling, S., Haller, D., & Skerra, A. (2013). PASylation: a biological alternative to PEGylation for extending the plasma half-life of pharmaceutically active proteins. Protein Engineering Design and Selection. https://doi.org/10.1093/protein/gzt023

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