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. 2021 May 26;40:177. doi: 10.1186/s13046-021-01973-z

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© The Author(s) 2021

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 7 — Down-regulating miR-15a-5p promotes M2 macrophage polarization and HCC cell migration, invasion and EMT. a. RT-qPCR detection of miR-15a-5p expression in macrophages after down-regulating miR-15a-5p; b. RT-qPCR detection of M2 macrophages markers (CD206, CD163, CCL17 and CCL18) after down-regulating miR-15a-5p; c. RT-qPCR detection of M1 macrophages markers (TNF-α, IL-6 and TGF-β) after down-regulating miR-15a-5p; d. Transwell assay tested the migration and invasion of SMMC-7721 cells after co-culture with macrophages inhibiting miR-15a-5p; e. Transwell assay tested the migration and invasion of HepG2 cells after co-culture with macrophages inhibiting miR-15a-5p; f. E-cadherin, N-cadherin, vimentin and MMP7 expression in SMMC-7721 and HepG2 cells after co-culture with macrophages inhibiting miR-15a-5p by qPCR; data were expressed as mean ± standard deviation (repetition = 3) and evaluated by One-way AVONA and Tukey’s test. % P < 0.05 compared with the NC-inhibitor group; + P < 0.05 compared with the NC-inhibitor + M group