Hunter syndrome (Mucopolysaccharidosis II, MPS II) is an X‐linked lysosomal storage disease produced by the deficiency of the lysosomal enzyme iduronate‐2‐sulfatase (IDS). Currently, MPS II patients are mainly treated with enzyme replacement therapy (ERT) using recombinant enzymes produced in mammalian cells. As an alternative, several studies have shown the production of active and therapeutic forms of lysosomal proteins in microorganisms. In this paper, we report the production and characterization of a recombinant IDS produced in the yeast Pichia pastoris (prIDS). We evaluated the effect of culture conditions and gene sequence optimization on prIDS production. The results showed that the highest production of prIDS was obtained at oxygen‐limited conditions using a codon‐optimized IDS cDNA. The purified enzyme showed a final activity of 12.45 nmol mg−1 H−1 and an apparent molecular mass of about 90 kDa. The highest stability was achieved at pH 6.0, and prIDS also showed high stability in human serum. Noteworthy, the enzyme was taken up by culture cells in a dose‐dependent manner through mannose receptors, which allowed the delivery of the enzyme to the lysosome. In summary, these results show the potential of Pichia pastoris as a host to produce an IDS intended for a MPS II ERT.

Production and characterization of a human lysosomal recombinant iduronate-2-sulfatase produced in Pichia pastoris

Ruiz, Fredy;
2018-01-01

Abstract

Hunter syndrome (Mucopolysaccharidosis II, MPS II) is an X‐linked lysosomal storage disease produced by the deficiency of the lysosomal enzyme iduronate‐2‐sulfatase (IDS). Currently, MPS II patients are mainly treated with enzyme replacement therapy (ERT) using recombinant enzymes produced in mammalian cells. As an alternative, several studies have shown the production of active and therapeutic forms of lysosomal proteins in microorganisms. In this paper, we report the production and characterization of a recombinant IDS produced in the yeast Pichia pastoris (prIDS). We evaluated the effect of culture conditions and gene sequence optimization on prIDS production. The results showed that the highest production of prIDS was obtained at oxygen‐limited conditions using a codon‐optimized IDS cDNA. The purified enzyme showed a final activity of 12.45 nmol mg−1 H−1 and an apparent molecular mass of about 90 kDa. The highest stability was achieved at pH 6.0, and prIDS also showed high stability in human serum. Noteworthy, the enzyme was taken up by culture cells in a dose‐dependent manner through mannose receptors, which allowed the delivery of the enzyme to the lysosome. In summary, these results show the potential of Pichia pastoris as a host to produce an IDS intended for a MPS II ERT.
2018
File in questo prodotto:
File Dimensione Formato  
bab.1660.pdf

Accesso riservato

Descrizione: Articolo
: Publisher’s version
Dimensione 748.82 kB
Formato Adobe PDF
748.82 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1164437
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 13
social impact