PMID- 28592444 OWN - NLM STAT- MEDLINE DCOM- 20170913 LR - 20191210 IS - 1540-8140 (Electronic) IS - 0021-9525 (Print) IS - 0021-9525 (Linking) VI - 216 IP - 7 DP - 2017 Jul 3 TI - Cellular differentiation state modulates the mRNA export activity of SR proteins. PG - 1993-2009 LID - 10.1083/jcb.201610051 [doi] AB - SR proteins function in nuclear pre-mRNA processing, mRNA export, and translation. To investigate their cellular dynamics, we developed a quantitative assay, which detects differences in nucleocytoplasmic shuttling among seven canonical SR protein family members. As expected, SRSF2 and SRSF5 shuttle poorly in HeLa cells but surprisingly display considerable shuttling in pluripotent murine P19 cells. Combining individual-resolution cross-linking and immunoprecipitation (iCLIP) and mass spectrometry, we show that elevated arginine methylation of SRSF5 and lower phosphorylation levels of cobound SRSF2 enhance shuttling of SRSF5 in P19 cells by modulating protein-protein and protein-RNA interactions. Moreover, SRSF5 is bound to pluripotency-specific transcripts such as Lin28a and Pou5f1/Oct4 in the cytoplasm. SRSF5 depletion reduces and overexpression increases their cytoplasmic mRNA levels, suggesting that enhanced mRNA export by SRSF5 is required for the expression of pluripotency factors. Remarkably, neural differentiation of P19 cells leads to dramatically reduced SRSF5 shuttling. Our findings indicate that posttranslational modification of SR proteins underlies the regulation of their mRNA export activities and distinguishes pluripotent from differentiated cells. CI - (c) 2017 Botti et al. FAU - Botti, Valentina AU - Botti V AUID- ORCID: 0000-0001-7407-8749 AD - Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT. FAU - McNicoll, Francois AU - McNicoll F AUID- ORCID: 0000-0001-5150-6245 AD - Cluster of Excellence Macromolecular Complexes, Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt am Main, Germany. FAU - Steiner, Michaela C AU - Steiner MC AD - Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany. FAU - Richter, Florian M AU - Richter FM AUID- ORCID: 0000-0002-9243-0272 AD - Functional Proteomics Group, Institute for Biochemistry I, Goethe University Frankfurt, Frankfurt am Main, Germany. FAU - Solovyeva, Anfisa AU - Solovyeva A AD - Cluster of Excellence Macromolecular Complexes, Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt am Main, Germany. FAU - Wegener, Marius AU - Wegener M AD - Cluster of Excellence Macromolecular Complexes, Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt am Main, Germany. AD - Buchmann Institute for Molecular Life Sciences, Frankfurt am Main, Germany. FAU - Schwich, Oliver D AU - Schwich OD AD - Cluster of Excellence Macromolecular Complexes, Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt am Main, Germany. AD - Buchmann Institute for Molecular Life Sciences, Frankfurt am Main, Germany. FAU - Poser, Ina AU - Poser I AD - Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany. FAU - Zarnack, Kathi AU - Zarnack K AD - Buchmann Institute for Molecular Life Sciences, Frankfurt am Main, Germany. FAU - Wittig, Ilka AU - Wittig I AD - Functional Proteomics Group, Institute for Biochemistry I, Goethe University Frankfurt, Frankfurt am Main, Germany. FAU - Neugebauer, Karla M AU - Neugebauer KM AUID- ORCID: 0000-0002-3835-6761 AD - Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT karla.neugebauer@yale.edu. FAU - Muller-McNicoll, Michaela AU - Muller-McNicoll M AUID- ORCID: 0000-0002-7174-8310 AD - Cluster of Excellence Macromolecular Complexes, Institute of Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt am Main, Germany mueller-mcnicoll@bio.uni-frankfurt.de. LA - eng PT - Comparative Study PT - Journal Article DEP - 20170607 PL - United States TA - J Cell Biol JT - The Journal of cell biology JID - 0375356 RN - 0 (DNA-Binding Proteins) RN - 0 (NFX1 protein, human) RN - 0 (Nfx1 protein, mouse) RN - 0 (RNA, Messenger) RN - 0 (RNA-Binding Proteins) RN - 0 (Repressor Proteins) RN - 0 (SRSF2 protein, mouse) RN - 0 (SRSF5 protein, human) RN - 0 (SRSF5 protein, mouse) RN - 0 (Transcription Factors) RN - 147153-65-9 (SRSF2 protein, human) RN - 170974-22-8 (Serine-Arginine Splicing Factors) RN - 94ZLA3W45F (Arginine) SB - IM MH - Active Transport, Cell Nucleus MH - Animals MH - Arginine MH - *Cell Differentiation MH - Cell Nucleus/*metabolism MH - DNA-Binding Proteins/genetics/metabolism MH - HeLa Cells MH - Humans MH - Immunoprecipitation MH - Methylation MH - Mice MH - Neurogenesis MH - Phenotype MH - Phosphorylation MH - Pluripotent Stem Cells/*metabolism MH - Protein Binding MH - Protein Processing, Post-Translational MH - RNA Interference MH - RNA, Messenger/genetics/*metabolism MH - RNA-Binding Proteins/genetics/metabolism MH - Repressor Proteins/genetics/metabolism MH - Serine-Arginine Splicing Factors/genetics/*metabolism MH - Tandem Mass Spectrometry MH - Transcription Factors/genetics/metabolism MH - Transfection PMC - PMC5496613 EDAT- 2017/06/09 06:00 MHDA- 2017/09/14 06:00 PMCR- 2018/01/03 CRDT- 2017/06/09 06:00 PHST- 2016/10/15 00:00 [received] PHST- 2017/03/22 00:00 [revised] PHST- 2017/04/24 00:00 [accepted] PHST- 2017/06/09 06:00 [pubmed] PHST- 2017/09/14 06:00 [medline] PHST- 2017/06/09 06:00 [entrez] PHST- 2018/01/03 00:00 [pmc-release] AID - jcb.201610051 [pii] AID - 201610051 [pii] AID - 10.1083/jcb.201610051 [doi] PST - ppublish SO - J Cell Biol. 2017 Jul 3;216(7):1993-2009. doi: 10.1083/jcb.201610051. Epub 2017 Jun 7.