NLS peptide conjugated molecular beacons for visualizing nuclear RNA in living cells.
NLS peptide conjugated molecular beacons for visualizing nuclear RNA in living cells.
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DOI:
10.1021/bc800322a
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发表时间:
2008-11-19
影响因子:
4.7
通讯作者:
Bao, Gang
中科院分区:
文献类型:
--
作者:
Nitin, Nitin;Bao, Gang
Imaging the expression and localization of RNAs in live-cell nucleus can provide important information on RNA synthesis, processing and transport. Here we report the development of a bi-functional molecular beacon (NLS-MB) composed of a single nuclear localization sequence (NLS) peptide conjugated to a molecular beacon for efficient delivery and imaging of endogenous RNAs in the nuclei of living cells. We characterized the NLS-MBs by comparing their signal to noise ratios with unmodified molecular beacons and determined their efficiency of nuclear import. We demonstrated the specificity and sensitivity of the method by observing in living cells the localization and co-localization of small nuclear RNAs (snRNA) U1 and U2 at discrete foci in the nucleoplasm, and the localization of small nucleolar RNA U3 in the nucleolus. These snRNAs were chosen because of their essential roles in RNA biogenesis. The results were validated using in situ hybridization as positive control and random beacons as negative control. This novel approach may be applied to imaging other nuclear RNAs and pre-mRNAs in living cells.
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影响因子:
7.8
作者:
MATERA, AG;WARD, DC
通讯作者:
WARD, DC
DOI:
10.1073/pnas.2233244100
发表时间:
2003-11-11
影响因子:
11.1
作者:
Bratu, DP;Cha, BJ;Tyagi, S
通讯作者:
Tyagi, S
影响因子:
64.8
作者:
Dragon, F;Gallagher, JEG;Baserga, SJ
通讯作者:
Baserga, SJ
影响因子:
3.3
作者:
MATERA, AG;TYCOWSKI, KT;WARD, DC
通讯作者:
WARD, DC
影响因子:
11.4
作者:
CARMOFONSECA, M;PEPPERKOK, R;LAMOND, AI
通讯作者:
LAMOND, AI