Oral immunotherapy tolerizes mice to enzyme replacement therapy for Morquio A syndrome
Angela C. Sosa, … , Eric Armbrecht, Adriana M. Montaño
Angela C. Sosa, … , Eric Armbrecht, Adriana M. Montaño
Published November 19, 2019
Citation Information: J Clin Invest. 2020;130(3):1288-1300. https://doi.org/10.1172/JCI125607.
View: Text | PDF
Research Article Genetics Immunology

Oral immunotherapy tolerizes mice to enzyme replacement therapy for Morquio A syndrome

Abstract

Immune response to therapeutic enzymes poses a detriment to patient safety and treatment outcome. Enzyme replacement therapy (ERT) is a standard therapeutic option for some types of mucopolysaccharidoses, including Morquio A syndrome caused by N-acetylgalactosamine-6-sulfate sulfatase (GALNS) deficiency. Current protocols tolerize patients using cytotoxic immunosuppressives, which can cause adverse effects. Here we show development of tolerance in Morquio A mice via oral delivery of peptide or GALNS for 10 days prior to ERT. Our results show that using an immunodominant peptide (I10) or the complete GALNS enzyme to orally induce tolerance to GALNS prior to ERT resulted in several improvements to ERT in mice: (a) decreased splenocyte proliferation after in vitro GALNS stimulation, (b) modulation of the cytokine secretion profile, (c) decrease in GALNS-specific IgG or IgE in plasma, (d) decreased GAG storage in liver, and (e) fewer circulating immune complexes in plasma. This model could be extrapolated to other lysosomal storage disorders in which immune response hinders ERT.

Authors

Angela C. Sosa, Barbara Kariuki, Qi Gan, Alan P. Knutsen, Clifford J. Bellone, Miguel A. Guzmán, Luis A. Barrera, Shunji Tomatsu, Anil K. Chauhan, Eric Armbrecht, Adriana M. Montaño

×
Problems with a PDF?

This file is in Adobe Acrobat (PDF) format. If you have not installed and configured the Adobe Acrobat Reader on your system.

Having trouble reading a PDF?

PDFs are designed to be printed out and read, but if you prefer to read them online, you may find it easier if you increase the view size to 125%.

Having trouble saving a PDF?

Many versions of the free Acrobat Reader do not allow Save. You must instead save the PDF from the JCI Online page you downloaded it from. PC users: Right-click on the Download link and choose the option that says something like "Save Link As...". Mac users should hold the mouse button down on the link to get these same options.

Having trouble printing a PDF?

  1. Try printing one page at a time or to a newer printer.
  2. Try saving the file to disk before printing rather than opening it "on the fly." This requires that you configure your browser to "Save" rather than "Launch Application" for the file type "application/pdf", and can usually be done in the "Helper Applications" options.
  3. Make sure you are using the latest version of Adobe's Acrobat Reader.

Supplemental data - Download (12.60 KB)

Advertisement