An APEX2 proximity ligation method for mapping interactions with the nuclear lamina.
An APEX2 proximity ligation method for mapping interactions with the nuclear lamina.
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DOI:
10.1083/jcb.202002129
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发表时间:
2021-01-04
期刊:
影响因子:
--
通讯作者:
Zheng Y
中科院分区:
文献类型:
--
作者:
Tran JR;Paulson DI;Moresco JJ;Adam SA;Yates JR;Goldman RD;Zheng Y
The APEX2 proximity ligation method can identify RNA, protein, and DNA interacting with or in proximity to the nuclear lamina. This work suggests a potential regulation of mRNAs containing long 3′ UTRs and uncovers variation in lamina-associated chromatin domains during the cell cycle. The nuclear lamina (NL) is a meshwork found beneath the inner nuclear membrane. The study of the NL is hindered by the insolubility of the meshwork and has driven the development of proximity ligation methods to identify the NL-associated/proximal proteins, RNA, and DNA. To simplify and improve temporal labeling, we fused APEX2 to the NL protein lamin-B1 to map proteins, RNA, and DNA. The identified NL-interacting/proximal RNAs show a long 3′ UTR bias, a finding consistent with an observed bias toward longer 3′ UTRs in genes deregulated in lamin-null cells. A C-rich motif was identified in these 3′ UTR. Our APEX2-based proteomics identifies a C-rich motif binding regulatory protein that exhibits altered localization in lamin-null cells. Finally, we use APEX2 to map lamina-associated domains (LADs) during the cell cycle and uncover short, H3K27me3-rich variable LADs. Thus, the APEX2-based tools presented here permit identification of proteomes, transcriptomes, and genome elements associated with or proximal to the NL.
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影响因子:
10.5
作者:
Boutz PL;Bhutkar A;Sharp PA
通讯作者:
Sharp PA
影响因子:
48
作者:
Bar DZ;Atkatsh K;Tavarez U;Erdos MR;Gruenbaum Y;Collins FS
通讯作者:
Collins FS
影响因子:
3.3
作者:
Freund A;Laberge RM;Demaria M;Campisi J
通讯作者:
Campisi J
DOI:
10.1002/wdev.272
发表时间:
2017-07
期刊:
Wiley interdisciplinary reviews. Developmental biology
影响因子:
--
作者:
Chen CL;Perrimon N
通讯作者:
Perrimon N
影响因子:
3.7
作者:
Chen, Haiyang;Zheng, Xiaobin;Zheng, Yixian
通讯作者:
Zheng, Yixian