PMID- 35149451 OWN - NLM STAT- MEDLINE DCOM- 20220315 LR - 20220315 IS - 1873-4235 (Electronic) IS - 0956-5663 (Linking) VI - 204 DP - 2022 May 15 TI - Live imaging of RNA and RNA splicing in mammalian cells via the dcas13a-SunTag-BiFC system. PG - 114074 LID - S0956-5663(22)00114-2 [pii] LID - 10.1016/j.bios.2022.114074 [doi] AB - Dynamic tracking of the localization of RNA molecules (nucleus and/or cytoplasm) and RNA splicing in living cells plays an important role in understanding their functions. However, a lack of dynamic imaging and high background fluorescence have been reported in the fluorescence in situ hybridization (FISH). Here, we developed a new tool, the dcas13a-SunTag-BiFC system, which fused the dLwacas13a and SunTag systems. dLwacas13a is used as a tracker to target specific RNAs, while SunTag recruits split Venus fluorescent proteins to label targeted RNAs. Our results showed that 4 x NLS-dCas13a-24 x SunTag-BiFC and 2 x NLS- dCas13a-24 x SunTag-BiFC systems can be used for imaging of endogenous RNA foci in the nucleus (Xist) and cytoplasm (Ppib and stress granules) in living cells, respectively. Compared to 12x MS2-MCP system, the dcas13a-SunTag-BiFC system showed a better performance of mRNA foci tracking in live cells. Furthermore, we confirmed the premature termination codon (PTC)-induced exon skipping of Oxt RNA using the dcas13a-SunTag-BiFC and MS2-MCP systems in the nucleus. Thus, the dcas13a-SunTag-BiFC system will facilitate the study of RNA localization in living cells and provide new insights into RNA translocation and splicing. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Chen, Mao AU - Chen M AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Sui, Tingting AU - Sui T AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Yang, Li AU - Yang L AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Qian, Yuqiang AU - Qian Y AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Liu, Zhiquan AU - Liu Z AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Liu, Yongsai AU - Liu Y AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Wang, Gerong AU - Wang G AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. FAU - Lai, Liangxue AU - Lai L AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China; CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China. Electronic address: lai_liangxue@gibh.ac.cn. FAU - Li, Zhanjun AU - Li Z AD - Key Laboratory of Zoonosis Research, Ministry of Education, College of Animal Science, Jilin University, Changchun, 130062, China. Electronic address: lizj_1998@jlu.edu.cn. LA - eng PT - Journal Article DEP - 20220204 PL - England TA - Biosens Bioelectron JT - Biosensors & bioelectronics JID - 9001289 RN - 0 (RNA, Messenger) RN - 63231-63-0 (RNA) SB - IM MH - Animals MH - *Biosensing Techniques MH - In Situ Hybridization, Fluorescence MH - *RNA/genetics/metabolism MH - RNA Splicing MH - RNA, Messenger/genetics OTO - NOTNLM OT - Cas13 OT - Live imaging OT - RNA OT - RNA splicing EDAT- 2022/02/13 06:00 MHDA- 2022/03/16 06:00 CRDT- 2022/02/12 05:35 PHST- 2021/09/11 00:00 [received] PHST- 2022/01/19 00:00 [revised] PHST- 2022/02/02 00:00 [accepted] PHST- 2022/02/13 06:00 [pubmed] PHST- 2022/03/16 06:00 [medline] PHST- 2022/02/12 05:35 [entrez] AID - S0956-5663(22)00114-2 [pii] AID - 10.1016/j.bios.2022.114074 [doi] PST - ppublish SO - Biosens Bioelectron. 2022 May 15;204:114074. doi: 10.1016/j.bios.2022.114074. Epub 2022 Feb 4.