Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1534/genetics.112.143354 |
| Titel (primär) | Quantitative trait loci mapping of the mouse plasma proteome (pQTL) |
| Autor | Holdt, L.M.; von Delft, A.; Nicolaou, A.; Baumann, S.; Kostrzewa, M.; Thiery, J.; Teupser, D. |
| Quelle | Genetics |
| Erscheinungsjahr | 2013 |
| Department | METABOX |
| Band/Volume | 193 |
| Heft | 2 |
| Seite von | 601 |
| Seite bis | 608 |
| Sprache | englisch |
| Keywords | plasma; quantitative trait loci (QTL); Apoa2; Hba2; MALDI-TOF-MS |
| UFZ Querschnittsthemen | RU3; |
| Abstract | A current challenge in the era of genome-wide studies is to determine the responsible genes and mechanisms underlying newly identified loci. Screening of the plasma proteome by high-throughput mass spectrometry (MALDI-TOF MS) is considered as a promising approach for identification of metabolic and disease processes. Therefore, plasma proteome screening might be particularly useful for identifying responsible genes when combined with analysis of variation in the genome. Here, we describe a proteomic quantitative trait locus (pQTL) study of plasma proteome screens in an F2 intercross of 455 mice mapped with 177 genetic markers across the genome. 69 of 176 peptides revealed significant LOD-scores (≥5.35) demonstrating strong genetic regulation of distinct components of the plasma proteome. Analyses were confirmed by mechanistic studies and MALDI-TOF/TOF, LC-MS/MS analyses of the two strongest pQTLs: A pQTL for m/z 3494 (LOD 24.9, D11Mit151) was identified as the N-terminal 35 amino acids of hemoglobin subunit A (Hba) and caused by genetic variation in Hba. Another pQTL for m/z 8713 (LOD 36.4; D1Mit111) was caused by variation in apolipoprotein A2 (Apoa2) and co-segregated with HDL-cholesterol. Taken together, we show that genome-wide plasma proteome profiling in combination with genome-wide genetic screening aids in the identification of causal genetic variants affecting abundance of plasma proteins. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=13224 |
| Holdt, L.M., von Delft, A., Nicolaou, A., Baumann, S., Kostrzewa, M., Thiery, J., Teupser, D. (2013): Quantitative trait loci mapping of the mouse plasma proteome (pQTL) Genetics 193 (2), 601 - 608 10.1534/genetics.112.143354 |
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