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. 2023 Jul 13;14(7):424. doi: 10.1038/s41419-023-05953-3

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — A Workflow of ChIRP coupled with mass spectrometry (ChIRP-MS) or RNA-seq (ChIRP-RNA-seq) to identify molecules associated with TM4SF1-AS1. B qRT-PCR confirming enrichment of TM4SF1-AS1 in ChIRP products derived from SNU638-TM4SF1-AS1 cells. (n = 3). C Protein-protein interaction (PPI) network among the proteins identified by ChIRP-MS. Functional categories of the proteins are indicated by node colors. D RIP-qPCR assays validating the ChIRP-MS results. The indicated proteins in HSC-45 cells were immunoprecipitated, and co-precipitated TM4SF1-AS1 was detected by qRT-PCR. IgG served as a negative control. (n = 3). E Immunofluorescence images showing staining of the SG marker G3PB2 in SNU638, SNU638-GFP, and SNU638-TM4SF1-AS1 cells treated with or without sodium arsenite (SA). Summarized results are shown on the right (n = 5). Scale bars = 10 μm. F Immunofluorescence indicating G3BP2 (green), TIA1 (white), and inducible MS2-tagged TM4SF1-AS1 (red) in SNU638 cells. Cells were transfected with a MS2 coat protein (MCP)-RFP plasmid and incubated for 8 days with or without Dox. Magnified views of the respective markers are shown on the right. Scale bars = 10 μm. *P < 0.05, **P < 0.01, ***P < 0.001.