Alternative start and termination sites of transcription drive most transcript isoform differences across human tissues.
Alternative start and termination sites of transcription drive most transcript isoform differences across human tissues.
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转录的替代起始和终止位点驱动着大多数人类组织中的大多数转录本同工型差异。
DOI:
10.1093/nar/gkx1165
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发表时间:
2018-01-25
影响因子:
14.9
通讯作者:
Huber W
中科院分区:
文献类型:
--
作者:
Reyes A;Huber W
Most human genes generate multiple transcript isoforms. The differential expression of these isoforms can help specify cell types. Diverse transcript isoforms arise from the use of alternative transcription start sites, polyadenylation sites and splice sites; however, the relative contribution of these processes to isoform diversity in normal human physiology is unclear. To address this question, we investigated cell type-dependent differences in exon usage of over 18 000 protein-coding genes in 23 cell types from 798 samples of the Genotype-Tissue Expression Project. We found that about half of the expressed genes displayed tissue-dependent transcript isoforms. Alternative transcription start and termination sites, rather than alternative splicing, accounted for the majority of tissue-dependent exon usage. We confirmed the widespread tissue-dependent use of alternative transcription start sites in a second, independent dataset, Cap Analysis of Gene Expression data from the FANTOM consortium. Moreover, our results indicate that most tissue-dependent splicing involves untranslated exons and therefore may not increase proteome complexity. Thus, alternative transcription start and termination sites are the principal drivers of transcript isoform diversity across tissues, and may underlie the majority of cell type specific proteomes and functions.
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影响因子:
48
作者:
Huber W;Carey VJ;Gentleman R;Anders S;Carlson M;Carvalho BS;Bravo HC;Davis S;Gatto L;Girke T;Gottardo R;Hahne F;Hansen KD;Irizarry RA;Lawrence M;Love MI;MacDonald J;Obenchain V;Oleś AK;Pagès H;Reyes A;Shannon P;Smyth GK;Tenenbaum D;Waldron L;Morgan M
通讯作者:
Morgan M
DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
12.3
作者:
Gonzàlez-Porta M;Frankish A;Rung J;Harrow J;Brazma A
通讯作者:
Brazma A
影响因子:
3.5
作者:
Kelemen O;Convertini P;Zhang Z;Wen Y;Shen M;Falaleeva M;Stamm S
通讯作者:
Stamm S
影响因子:
3.7
作者:
Hopitzan, AA;Baines, AJ;Kordeli, E
通讯作者:
Kordeli, E