Regulation of N-acetylgalactosamine 4-sulfatase expression in retrovirus-transduced feline mucopolysaccharidosis type VI muscle cells

Gouri Yogalingam, Vivienne Muller, John J. Hopwood, Donald S. Anson

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

As a preliminary step toward muscle-mediated gene therapy in the mucopolysaccharidosis (MPS) type VI cat, we have analyzed the transcriptional regulation of feline N-acetylgalactosamine 4-sulfatase (f4S) gene expression from various retroviral constructs in primary cultures of muscle cells. Two retroviral constructs were made containing the f4S cDNA under the transcriptional control of the human polypeptide chain-elongation factor 1α (EF1α) gene promoter or the cytomegalovirus (CMV) immediate-early promoter. Two further retroviral constructs were made with the murine muscle creatine kinase (mck) enhancer sequence upstream of the internal promoter. Virus made from each construct was used to transduce feline MPS VI myoblasts. The mck enhancer significantly upregulated f4S gene expression from both the EF1α promoter and the CMV promoter in transduced myoblasts and in differentiated myofibers. The highest level of 4S activity was observed in myoblasts and myofibers transduced with the retroviral construct Lmckcmv4S, in which the f4S gene is under the transcriptional regulation of the rock enhancer and CMV immediate-early promoter. Lmckcmv4S-transduced myofibers demonstrated correction of glycosaminoglycan storage and contained a 58-fold elevated level of 4S activity compared with normal myofibers. Recombinant f4S secreted from Lmckcmv4S-transduced myofibers was endocytosed by feline MPS VI myofibers, leading to correction of the biochemical storage phenotype.

LanguageEnglish
Pages187-195
Number of pages9
JournalDNA and Cell Biology
Volume18
Issue number3
DOIs
Publication statusPublished - 1 Mar 1999

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cell Biology

Cite this

Yogalingam, Gouri ; Muller, Vivienne ; Hopwood, John J. ; Anson, Donald S. / Regulation of N-acetylgalactosamine 4-sulfatase expression in retrovirus-transduced feline mucopolysaccharidosis type VI muscle cells. In: DNA and Cell Biology. 1999 ; Vol. 18, No. 3. pp. 187-195.
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Regulation of N-acetylgalactosamine 4-sulfatase expression in retrovirus-transduced feline mucopolysaccharidosis type VI muscle cells. / Yogalingam, Gouri; Muller, Vivienne; Hopwood, John J.; Anson, Donald S.

In: DNA and Cell Biology, Vol. 18, No. 3, 01.03.1999, p. 187-195.

Research output: Contribution to journalArticle

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