Natural Glycoforms of Human Interleukin 6 Show Atypical Plasma Clearance.
Animals
Cell Line
Cell Proliferation
/ drug effects
Chromatography, High Pressure Liquid
Galactose
/ metabolism
Glycopeptides
/ blood
Glycosylation
Humans
Interleukin-6
/ blood
Mice
N-Acetylneuraminic Acid
/ metabolism
Rats
Recombinant Fusion Proteins
/ biosynthesis
Spectrometry, Mass, Electrospray Ionization
glycopeptides
glycoproteins
native chemical ligation
oligosaccharides
serum clearance
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
07 06 2021
07 06 2021
Historique:
received:
31
01
2021
pubmed:
24
3
2021
medline:
7
9
2021
entrez:
23
3
2021
Statut:
ppublish
Résumé
A library of glycoforms of human interleukin 6 (IL-6) comprising complex and mannosidic N-glycans was generated by semisynthesis. The three segments were connected by sequential native chemical ligation followed by two-step refolding. The central glycopeptide segments were assembled by pseudoproline-assisted Lansbury aspartylation and subsequent enzymatic elongation of complex N-glycans. Nine IL-6 glycoforms were synthesized, seven of which were evaluated for in vivo plasma clearance in rats and compared to non-glycosylated recombinant IL-6 from E. coli. Each IL-6 glycoform was tested in three animals and reproducibly showed individual serum clearances depending on the structure of the N-glycan. The clearance rates were atypical, since the 2,6-sialylated glycoforms of IL-6 cleared faster than the corresponding asialo IL-6 with terminal galactoses. Compared to non-glycosylated IL-6 the plasma clearance of IL-6 glycoforms was delayed in the presence of larger and multibranched N-glycans in most cases.
Identifiants
pubmed: 33756033
doi: 10.1002/anie.202101496
pmc: PMC8251587
doi:
Substances chimiques
Glycopeptides
0
Interleukin-6
0
Recombinant Fusion Proteins
0
N-Acetylneuraminic Acid
GZP2782OP0
Galactose
X2RN3Q8DNE
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
13380-13387Informations de copyright
© 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
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