PMID- 34458400 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220806 IS - 2331-8325 (Electronic) IS - 2331-8325 (Linking) VI - 11 IP - 15 DP - 2021 Aug 5 TI - Efficient and Rapid Analysis of Polysomes and Ribosomal Subunits in Cells and Tissues Using Ribo Mega-SEC. PG - e4106 LID - 10.21769/BioProtoc.4106 [doi] LID - e4106 AB - Polysome profile analysis is a popular method for separating polysomes and ribosomal subunits and is typically achieved using a sucrose density gradient (SDG). This has remained the gold standard method since ribosomes were first discovered; however, this method is time-consuming and requires multiple steps from making the gradient and long ultracentrifugation to collecting and analyzing the fractions. Each of these steps in the SDG workflow can introduce potential technical variation that affects the reproducibility of gradient profiles between samples. To address these limitations, we have developed a flexible, alternative approach for analyzing polysomes and ribosomal subunits based on size-exclusion chromatography (SEC), termed 'Ribo Mega-SEC.' In comparison with the SDG method, Ribo Mega-SEC involves a single step using ultra-high-performance liquid chromatography (uHPLC). The entire workflow, from injecting the lysate to collecting the fractions, can be performed in as little as 15 min, with high reproducibility. By varying the pore size of the SEC column, polysomes and ribosomal subunits can be separated using extracts from either human or mouse cultured cell lines or from tissue samples, Drosophila embryos, or budding yeast. The resulting separated fractions are suitable for analysis using a wide range of subsequent analytical techniques including mass spectrometry (MS)-based proteomics, RNA-Seq, electron microscopy (EM), and multiple biochemical assays. CI - Copyright (c) The Authors; exclusive licensee Bio-protocol LLC. FAU - Yoshikawa, Harunori AU - Yoshikawa H AD - Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, United Kingdom. AD - Division of Cell Signalling, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan. FAU - Sundaramoorthy, Ramasubramanian AU - Sundaramoorthy R AD - Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, United Kingdom. FAU - Mariyappa, Daniel AU - Mariyappa D AD - Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, United Kingdom. FAU - Jiang, Hao AU - Jiang H AD - Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, United Kingdom. FAU - Lamond, Angus I AU - Lamond AI AD - Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, United Kingdom. LA - eng PT - Journal Article DEP - 20210805 PL - United States TA - Bio Protoc JT - Bio-protocol JID - 101635102 PMC - PMC8376616 OTO - NOTNLM OT - Polysome OT - Polysome profile OT - Protein synthesis OT - Ribosome OT - Size-exclusion chromatography OT - Sucrose density gradient OT - mRNA translation COIS- Competing interestsThe authors declare no competing interests. EDAT- 2021/08/31 06:00 MHDA- 2021/08/31 06:01 PMCR- 2022/08/05 CRDT- 2021/08/30 06:02 PHST- 2021/02/23 00:00 [received] PHST- 2021/04/19 00:00 [revised] PHST- 2021/04/19 00:00 [accepted] PHST- 2021/08/30 06:02 [entrez] PHST- 2021/08/31 06:00 [pubmed] PHST- 2021/08/31 06:01 [medline] PHST- 2022/08/05 00:00 [pmc-release] AID - e4106 [pii] AID - 4106 [pii] AID - 10.21769/BioProtoc.4106 [doi] PST - epublish SO - Bio Protoc. 2021 Aug 5;11(15):e4106. doi: 10.21769/BioProtoc.4106. eCollection 2021 Aug 5.