Characterization of novel CDG-I defects. New insights in dolichol cycle regulation and ER quality control

作者: Wendy Vleugels

DOI:

关键词:

摘要: La plupart des proteines synthetisees dans un organisme sont modifiees de facon co- ou post-traductionnelle en vue d’elargir leur gamme fonctions biologiques. Une ces modifications, appelee glycosylation, concerne la liaison sucres aux proteines. deficience glycosylation conduit a anomalies, nommee ‘Congenital Disorders of Glycosylation’ CDG, avec large spectre caracteristiques cliniques affectant majorite organes. patients CDG deficients les premieres etapes N-glycosylation, et plus particulierement l’assemblage du precurseur oligosaccharidique Dol-PP-GlcNAc2Man9Glc3. Les deficiences assemblage nommees type I (CDG-I) caracterisees par une hypoglycosylation Malgre efforts entrepris, le nombre cas CDG-I non resolus (CDG-Ix) augmente maniere significative. Par consequent, l’objectif cette etude ete d’identifier le(s) deficit(s) moleculaire(s) cohorte cinquante CDG-Ix. Parmis CDG-Ix etudies, nous avons localise l’anomalie biochimique vingt-deux identifie deficit genetique neuf d’entre eux. En outre, etudes fondamentales sur cellules atteints ont permis d’apporter nouveau regard controle qualite RE regulation cycle dolichol.

参考文章(197)
B. Assmann, R. Hackler, V. Peters, J. Schaefer, T. Arndt, E. Mayatepek, J. Jaeken, G. Hoffmann, A new subtype of a congenital disorder of glycosylation (CDG) with mild clinical manifestations. Neuropediatrics. ,vol. 32, pp. 313- 318 ,(2001) , 10.1055/S-2001-20407
S. te Heesen, R. Knauer, L. Lehle, M. Aebi, Yeast Wbp1p and Swp1p form a protein complex essential for oligosaccharyl transferase activity. The EMBO Journal. ,vol. 12, pp. 279- 284 ,(1993) , 10.1002/J.1460-2075.1993.TB05654.X
R. Zufferey, R. Knauer, P. Burda, I. Stagljar, S. te Heesen, L. Lehle, M. Aebi, STT3, a highly conserved protein required for yeast oligosaccharyl transferase activity in vivo. The EMBO Journal. ,vol. 14, pp. 4949- 4960 ,(1995) , 10.1002/J.1460-2075.1995.TB00178.X
K. Finke, K. Plath, S. Panzner, S. Prehn, T. A. Rapoport, E. Hartmann, T. Sommer, A second trimeric complex containing homologs of the Sec61p complex functions in protein transport across the ER membrane of S. cerevisiae. The EMBO Journal. ,vol. 15, pp. 1482- 1494 ,(1996) , 10.1002/J.1460-2075.1996.TB00492.X
J. Jaeken, Congenital disorders of glycosylation (CDG): It's all in it! Journal of Inherited Metabolic Disease. ,vol. 26, pp. 99- 118 ,(2003) , 10.1023/A:1024431131208
John C. Christianson, Thomas A. Shaler, Ryan E. Tyler, Ron R. Kopito, OS-9 and GRP94 deliver mutant alpha1-antitrypsin to the Hrd1-SEL1L ubiquitin ligase complex for ERAD. Nature Cell Biology. ,vol. 10, pp. 272- 282 ,(2008) , 10.1038/NCB1689
H. Maekawa, K. Yamazumi, S. Muramatsu, M. Kaneko, H. Hirata, N. Takahashi, N.B. de Bosch, Z. Carvajal, A. Ojeda, C.L. Arocha-Piñango, An A alpha Ser-434 to N-glycosylated Asn substitution in a dysfibrinogen, fibrinogen Caracas II, characterized by impaired fibrin gel formation. Journal of Biological Chemistry. ,vol. 266, pp. 11575- 11581 ,(1991) , 10.1016/S0021-9258(18)98995-7
J.F. Wedgwood, J.L. Strominger, Enzymatic activities in cultured human lymphocytes that dephosphorylate dolichyl pyrophosphate and dolichyl phosphate. Journal of Biological Chemistry. ,vol. 255, pp. 1120- 1123 ,(1980) , 10.1016/S0021-9258(19)86150-1
D.D. Carson, B.J. Earles, W.J. Lennarz, Enhancement of protein glycosylation in tissue slices by dolichylphosphate. Journal of Biological Chemistry. ,vol. 256, pp. 11552- 11557 ,(1981) , 10.1016/S0021-9258(19)68436-X