Characterizing the RNA targets and position-dependent splicing regulation by TDP-43.
Characterizing the RNA targets and position-dependent splicing regulation by TDP-43.
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DOI:
10.1038/nn.2778
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发表时间:
2011-04
影响因子:
25
通讯作者:
Ule, Jernej
中科院分区:
文献类型:
--
作者:
Tollervey, James R.;Curk, Tomaz;Rogelj, Boris;Briese, Michael;Cereda, Matteo;Kayikci, Melis;Koenig, Julian;Hortobagyi, Tibor;Nishimura, Agnes L.;Zupunski, Vera;Patani, Rickie;Chandran, Siddharthan;Rot, Gregor;Zupan, Blaz;Shaw, Christopher E.;Ule, Jernej
TDP-43 is a predominantly nuclear RNA-binding protein that forms inclusion bodies in frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). The mRNA targets of TDP-43 in the human brain and its role in RNA processing are largely unknown. Using individual-nucleotide resolution UV-crosslinking and immunoprecipitation (iCLIP), we demonstrated that TDP-43 preferentially binds long clusters of UG-rich sequences in vivo. Analysis of TDP-43 RNA binding in FTLD-TDP brains revealed the greatest increases in binding to MALAT1 and NEAT1 non-coding RNAs. We also showed that TDP-43 binding on pre-mRNAs influences alternative splicing in a similar position-dependent manner to Nova proteins. In addition, we identified unusually long clusters of TDP-43 binding at deep intronic positions downstream of silenced exons. A significant proportion of alternative mRNA isoforms regulated by TDP-43 encode proteins that regulate neuronal development or are implicated in neurological diseases, highlighting the importance of TDP-43 for splicing regulation in the brain.
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通讯作者:
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