Abstract
MicroRNAs (miRNAs) are endogenous small RNAs, which negatively regulate expression of complementary target genes at the post-transcriptional level. In plants, miRNAs are mainly loaded onto ARGONAUTE1 to form RNA-induced silencing complexes (RISCs), which mediate target mRNA cleavage as well as translational repression. The cell-free system derived from tobacco BY-2 protoplasts has become a powerful tool not only for the analysis of RISC assembly mechanism but also for mechanistic dissection of plant RISC functions. Here we describe the detailed protocols for the preparation of BY-2 cell lysate and the procedure to analyze the dual function of plant RISC—target cleavage and translational repression—in vitro.
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References
Kozomara A, Griffiths-Jones S (2014) miRBase: annotating high confidence microRNAs using deep sequencing data. Nucleic Acids Res 42(Database issue):D68–D73. doi:10.1093/nar/gkt1181
Sunkar R, Li YF, Jagadeeswaran G (2012) Functions of microRNAs in plant stress responses. Trends Plant Sci 17(4):196–203. doi:10.1016/j.tplants.2012.01.010
Kurihara Y, Watanabe Y (2004) Arabidopsis micro-RNA biogenesis through dicer-like 1 protein functions. Proc Natl Acad Sci U S A 101(34):12753–12758. doi:10.1073/pnas.0403115101
Yu B, Yang Z, Li J, Minakhina S, Yang M, Padgett RW, Steward R, Chen X (2005) Methylation as a crucial step in plant microRNA biogenesis. Science 307(5711):932–935. doi:10.1126/science.1107130
Baumberger N, Baulcombe DC (2005) Arabidopsis ARGONAUTE1 is an RNA slicer that selectively recruits microRNAs and short interfering RNAs. Proc Natl Acad Sci U S A 102(33):11928–11933. doi:10.1073/pnas.0505461102
Iki T, Yoshikawa M, Nishikiori M, Jaudal MC, Matsumoto-Yokoyama E, Mitsuhara I, Meshi T, Ishikawa M (2010) In vitro assembly of plant RNA-induced silencing complexes facilitated by molecular chaperone HSP90. Mol Cell 39(2):282–291. doi:10.1016/j.molcel.2010.05.014
Mi S, Cai T, Hu Y, Chen Y, Hodges E, Ni F, Wu L, Li S, Zhou H, Long C, Chen S, Hannon GJ, Qi Y (2008) Sorting of small RNAs into Arabidopsis argonaute complexes is directed by the 5′ terminal nucleotide. Cell 133(1):116–127. doi:10.1016/j.cell.2008.02.034
Vaucheret H, Vazquez F, Crete P, Bartel DP (2004) The action of ARGONAUTE1 in the miRNA pathway and its regulation by the miRNA pathway are crucial for plant development. Genes Dev 18(10):1187–1197. doi:10.1101/gad.1201404
Tang G, Reinhart BJ, Bartel DP, Zamore PD (2003) A biochemical framework for RNA silencing in plants. Genes Dev 17(1):49–63. doi:10.1101/gad.1048103
Iwakawa HO, Tomari Y (2013) Molecular insights into microRNA-mediated translational repression in plants. Mol Cell 52(4):591–601. doi:10.1016/j.molcel.2013.10.033
Jones-Rhoades MW, Bartel DP, Bartel B (2006) MicroRNAS and their regulatory roles in plants. Annu Rev Plant Biol 57:19–53. doi:10.1146/annurev.arplant.57.032905.105218
Todesco M, Rubio-Somoza I, Paz-Ares J, Weigel D (2010) A collection of target mimics for comprehensive analysis of microRNA function in Arabidopsis thaliana. PLoS Genet 6(7):e1001031. doi:10.1371/journal.pgen.1001031
Schwab R, Palatnik JF, Riester M, Schommer C, Schmid M, Weigel D (2005) Specific effects of microRNAs on the plant transcriptome. Dev Cell 8(4):517–527. doi:10.1016/j.devcel.2005.01.018
Chen X (2004) A microRNA as a translational repressor of APETALA2 in Arabidopsis flower development. Science 303(5666):2022–2025. doi:10.1126/science.1088060
Aukerman MJ, Sakai H (2003) Regulation of flowering time and floral organ identity by a MicroRNA and its APETALA2-like target genes. Plant Cell 15(11):2730–2741. doi:10.1105/tpc.016238
Gandikota M, Birkenbihl RP, Hohmann S, Cardon GH, Saedler H, Huijser P (2007) The miRNA156/157 recognition element in the 3′ UTR of the Arabidopsis SBP box gene SPL3 prevents early flowering by translational inhibition in seedlings. Plant J 49(4):683–693. doi:10.1111/j.1365-313X.2006.02983.x
Brodersen P, Sakvarelidze-Achard L, Bruun-Rasmussen M, Dunoyer P, Yamamoto YY, Sieburth L, Voinnet O (2008) Widespread translational inhibition by plant miRNAs and siRNAs. Science 320(5880):1185–1190. doi:10.1126/science.1159151
Yang L, Wu G, Poethig RS (2012) Mutations in the GW-repeat protein SUO reveal a developmental function for microRNA-mediated translational repression in Arabidopsis. Proc Natl Acad Sci U S A 109(1):315–320. doi:10.1073/pnas.1114673109
Li S, Liu L, Zhuang X, Yu Y, Liu X, Cui X, Ji L, Pan Z, Cao X, Mo B, Zhang F, Raikhel N, Jiang L, Chen X (2013) MicroRNAs inhibit the translation of target mRNAs on the endoplasmic reticulum in Arabidopsis. Cell 153(3):562–574. doi:10.1016/j.cell.2013.04.005
Iwakawa HO, Tomari Y (2015) The functions of microRNAs: mRNA decay and translational repression. Trends Cell Biol 25(11):651–665. doi:10.1016/j.tcb.2015.07.011
Liu Q, Paroo Z (2010) Biochemical principles of small RNA pathways. Annu Rev Biochem 79:295–319. doi:10.1146/annurev.biochem.052208.151733
Qi Y, Denli AM, Hannon GJ (2005) Biochemical specialization within Arabidopsis RNA silencing pathways. Mol Cell 19(3):421–428. doi:10.1016/j.molcel.2005.06.014
Fukudome A, Kanaya A, Egami M, Nakazawa Y, Hiraguri A, Moriyama H, Fukuhara T (2011) Specific requirement of DRB4, a dsRNA-binding protein, for the in vitro dsRNA-cleaving activity of Arabidopsis dicer-like 4. RNA 17(4):750–760. doi:10.1261/rna.2455411
Iki T, Yoshikawa M, Meshi T, Ishikawa M (2012) Cyclophilin 40 facilitates HSP90-mediated RISC assembly in plants. EMBO J 31(2):267–278. doi:10.1038/emboj.2011.395
Ye R, Wang W, Iki T, Liu C, Wu Y, Ishikawa M, Zhou X, Qi Y (2012) Cytoplasmic assembly and selective nuclear import of Arabidopsis Argonaute4/siRNA complexes. Mol Cell 46(6):859–870. doi:10.1016/j.molcel.2012.04.013
Endo Y, Iwakawa HO, Tomari Y (2013) Arabidopsis ARGONAUTE7 selects miR390 through multiple checkpoints during RISC assembly. EMBO Rep 14(7):652–658. doi:10.1038/embor.2013.73
Komoda K, Naito S, Ishikawa M (2004) Replication of plant RNA virus genomes in a cell-free extract of evacuolated plant protoplasts. Proc Natl Acad Sci U S A 101(7):1863–1867. doi:10.1073/pnas.0307131101
Iwakawa HO, Mizumoto H, Nagano H, Imoto Y, Takigawa K, Sarawaneeyaruk S, Kaido M, Mise K, Okuno T (2008) A viral noncoding RNA generated by cis-element-mediated protection against 5′->3′ RNA decay represses both cap-independent and cap-dependent translation. J Virol 82(20):10162–10174. doi:10.1128/JVI.01027-08
Acknowledgments
We are grateful to the members of Tomari laboratory for comments on this manuscript. This work was supported in part by Grants-in-Aid for Scientific Research on Innovative Areas (“Nascent-chain Biology”) 26116003 (to H.I.) and (“Non-coding RNA neo-taxonomy”) 26113007 (to Y.T.), Grant-in-Aid for Young Scientists (A) 16H06159 (to H.I.), and Grant-in-Aid for Challenging Exploratory Research 15K14444 (to H.I.).
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Tomari, Y., Iwakawa, Ho. (2017). In Vitro Analysis of ARGONAUTE-Mediated Target Cleavage and Translational Repression in Plants. In: Carbonell, A. (eds) Plant Argonaute Proteins. Methods in Molecular Biology, vol 1640. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7165-7_4
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DOI: https://doi.org/10.1007/978-1-4939-7165-7_4
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