Combined immunodeficiency due to a mutation in the γ1 subunit of the coat protein I complex
| العنوان: | Combined immunodeficiency due to a mutation in the γ1 subunit of the coat protein I complex |
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| المؤلفون: | Victor W. Hsu, Seung-Yeol Park, Tobias C. Walther, Raif S. Geha, Maria Tsokos, Sarah Beaussant-Cohen, Seth Rakoff-Nahoum, Wayne Bainter, Shafiq Ur Rehman Naseem, Craig D. Platt, Janet Chou, Zachary Peters, Michel J. Massaad, Jennifer Jones, Chitong Rao, Michel Becuwe, Jordan S. Orange, Faris Jaber, Salem Al-Tamemi, Sandra Andrea Salinas, Jacqueline G. Wallace, Jia-Shu Yang, Kelsey Stafstrom |
| المصدر: | J Clin Invest |
| بيانات النشر: | American Society for Clinical Investigation, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0301 basic medicine, Cellular immunity, Receptors, Peptide, T-Lymphocytes, KDEL, Mutation, Missense, Golgi Apparatus, Apoptosis, Gene mutation, Endoplasmic Reticulum, Lymphocyte Activation, Coatomer Protein, Mice, 03 medical and health sciences, symbols.namesake, 0302 clinical medicine, Animals, Humans, Defective T cell proliferation, B-Lymphocytes, Chemistry, Endoplasmic reticulum, General Medicine, COPI, Golgi apparatus, Endoplasmic Reticulum Stress, Mice, Mutant Strains, Cell biology, 030104 developmental biology, Amino Acid Substitution, 030220 oncology & carcinogenesis, Unfolded protein response, symbols, Severe Combined Immunodeficiency, Research Article |
| الوصف: | The coat protein I (COPI) complex mediates retrograde trafficking from the Golgi to the endoplasmic reticulum (ER). Five siblings with persistent bacterial and viral infections and defective humoral and cellular immunity had a homozygous p.K652E mutation in the γ1 subunit of COPI (γ1-COP). The mutation disrupts COPI binding to the KDEL receptor and impairs the retrieval of KDEL-bearing chaperones from the Golgi to the ER. Homozygous Copg1(K652E) mice had increased ER stress in activated T and B cells, poor antibody responses, and normal numbers of T cells that proliferated normally, but underwent increased apoptosis upon activation. Exposure of the mutants to pet store mice caused weight loss, lymphopenia, and defective T cell proliferation that recapitulated the findings in the patients. The ER stress-relieving agent tauroursodeoxycholic acid corrected the immune defects of the mutants and reversed the phenotype they acquired following exposure to pet store mice. This study establishes the role of γ1-COP in the ER retrieval of KDEL-bearing chaperones and thereby the importance of ER homeostasis in adaptive immunity. |
| تدمد: | 1558-8238 0021-9738 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::299891811f4bf8261095c8b0e62c65adTest https://doi.org/10.1172/jci140494Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....299891811f4bf8261095c8b0e62c65ad |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15588238 00219738 |
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