Multiple functions of the first EGF domain in matrilin-3: Secretion and endoplasmic reticulum stress

  • Authors:
    • Yi-Chun Wang
    • Jing-Shi Liu
    • Jun-Yi Chen
    • Sheng-Qi Wu
    • Gui-Rong Wang
    • Jing Nie
    • Shu-Kun Zhang
    • Qu-Lian Guo
    • Jun-Ming Luo
  • View Affiliations

  • Published online on: October 15, 2015     https://doi.org/10.3892/ijmm.2015.2377
  • Pages: 1648-1656
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Abstract

Mutations in matrilin-3 are associated with common skeletal diseases, such as hand osteoarthritis (HOA), as well as rare chondrodysplasias, such as multiple epiphyseal dysplasia (MED) and spondyloepimetaphyseal dysplasia (SEMD). In the present study, we constructed the mutations R116W [at the von Willebrand factor, type A (vWFA) domain], T298M [at the first epidermal growth factor (EGF) domain] and C299S (at the first EGF domain), according to the mouse sequence, which are associated with human MED, HOA and SEMD, respectively, by overlap extension PCR and inserted them into an expression vector (pcDNA3.1/v5-His). We transfected these contructs into the COS-1 or MCT cells, and the results revealed that the HOA-related matrilin-3 mutation (T298M) leads to a high expression level of growth arrest DNA damage-inducible gene 153 (GADD153, also known as CHOP; an endoplasmic reticulum stress marker), as shown by western blot analysis and does not significantly affect protein secretion, as shown by immunofluorescence staining; however, osteochondroplasia, i.e., MED-related (R116W) and SEMD-related (C299S) mutations lead to both high levels of GADD153 expression and protein trafficking into the cytoplasm and form multiple vacuoles in cells, which in turn leads to insufficient protein secretion.
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December-2015
Volume 36 Issue 6

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Wang Y, Liu J, Chen J, Wu S, Wang G, Nie J, Zhang S, Guo Q and Luo J: Multiple functions of the first EGF domain in matrilin-3: Secretion and endoplasmic reticulum stress. Int J Mol Med 36: 1648-1656, 2015
APA
Wang, Y., Liu, J., Chen, J., Wu, S., Wang, G., Nie, J. ... Luo, J. (2015). Multiple functions of the first EGF domain in matrilin-3: Secretion and endoplasmic reticulum stress. International Journal of Molecular Medicine, 36, 1648-1656. https://doi.org/10.3892/ijmm.2015.2377
MLA
Wang, Y., Liu, J., Chen, J., Wu, S., Wang, G., Nie, J., Zhang, S., Guo, Q., Luo, J."Multiple functions of the first EGF domain in matrilin-3: Secretion and endoplasmic reticulum stress". International Journal of Molecular Medicine 36.6 (2015): 1648-1656.
Chicago
Wang, Y., Liu, J., Chen, J., Wu, S., Wang, G., Nie, J., Zhang, S., Guo, Q., Luo, J."Multiple functions of the first EGF domain in matrilin-3: Secretion and endoplasmic reticulum stress". International Journal of Molecular Medicine 36, no. 6 (2015): 1648-1656. https://doi.org/10.3892/ijmm.2015.2377