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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Wu, Xiaosheng Yu, Kefei Liu, Tongzheng Jelinek, Diane F. Pei, Huadong Lou, Zhenkun |
| Description | Country affiliation: United States Author Affiliation: Pei H ( Division of Oncology Research, Mayo Clinic, Rochester, MN 55905, USA.) |
| Abstract | Wolf-Hirschhorn syndrome (WHS) is a genetic disease with characteristic facial features and developmental disorders. Of interest, loss of the MMSET gene (also known as WHSC1) is considered to be responsible for the core phenotypes of this disease. Patients with WHS also display Ab deficiency, although the underlying cause of this deficiency is unclear. Recent studies suggest that the histone methyltransferase activity of MMSET plays an important role in the DNA damage response by facilitating the recruitment of 53BP1 to sites of DNA damage. We hypothesize that MMSET also regulates class switch recombination (CSR) through its effect on 53BP1. In this study, we show that MMSET indeed plays an important role in CSR through its histone methyltransferase activity. Knocking down MMSET expression impaired 53BP1 recruitment as well as the germline transcription of the Igh switch regions, resulting in defective CSR but no effect on cell growth and viability. These results suggest that defective CSR caused by MMSET deficiency could be a cause of Ab deficiency in WHS patients. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1201811 |
| Journal | The Journal of Immunology |
| Issue Number | 2 |
| Volume Number | 190 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2013-01-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Histone-lysine N-methyltransferase Metabolism Immunoglobulin Class Switching Genetics Repressor Proteins V(d)j Recombination Cell Line Gene Expression Regulation Genetic Loci Histones Immunoglobulin Heavy Chains Intracellular Signaling Peptides And Proteins Methylation Protein Binding Transcription, Genetic Wolf-hirschhorn Syndrome Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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