PMID- 34596215 OWN - NLM STAT- MEDLINE DCOM- 20220218 LR - 20220218 IS - 1745-7270 (Electronic) IS - 1672-9145 (Linking) VI - 53 IP - 11 DP - 2021 Nov 10 TI - Syndecan-2, negatively regulated by miR-20b-5p, contributes to 5-fluorouracil resistance of colorectal cancer cells via the JNK/ERK signaling pathway. PG - 1547-1557 LID - 10.1093/abbs/gmab124 [doi] AB - 5-Fluorouracil (5-FU) resistance has been long considered as an obstacle to the efficacy of chemotherapy in colorectal cancer (CRC). In this study, we demonstrated the role of miR-20b-5p-regulated syndecan-2 (SDC2) in 5-FU resistance of CRC cells. 5-FU-resistant SW480 CRC cells were established by treatment of SW480 cells with stepwise increase of 5-FU concentration. The results showed that SDC2 was expressed significantly higher in SW480/5-FU cells than in SW480/WT cells as revealed by quantitative real-time polymerase chain reaction and western blot analysis. MTT assay and BrdU assay showed that SDC2 overexpression led to increased cell survival rate, while SDC2 knockdown reversed the drug resistance of SW480/5-FU cells. Wound healing and transwell invasion assays revealed that knockdown of SDC2 inhibited the migratory and invasive ability of SW480/5-FU cells. Moreover, animal experiments indicated that si-SDC2 plays a suppressive role in tumor growth in vivo. We also confirmed that miR-20b-5p interacted with SDC2, which reversed the effect of SDC2 in SW480/5-FU cells via the c-Jun N-terminal kinase (JNK)/extracellular regulated protein kinases (ERK) signaling pathway. These findings showed that JNK/ERK signaling pathway is involved in miR-20b-5p/SDC2 axis-mediated 5-FU resistance in SW480/5-FU cells, indicating that the miR-20b-5p/SDC2 axis is a potential target for reversing 5-FU resistance in CRC. CI - (c) The Author(s) 2021. Published by Oxford University Press on behalf of the Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Hua, Ruheng AU - Hua R AD - Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Nantong 226021, China. AD - Department of General Surgery, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou 225001, China. FAU - Zhang, Yan AU - Zhang Y AD - Department of Chemotherapy, Affiliated Hospital of Nantong University, Nantong 226021, China. FAU - Yan, Xiyue AU - Yan X AD - Department of Hematology, Northern Jiangsu People's Hospital, Yangzhou 225001, China. FAU - Tang, Dong AU - Tang D AD - Department of General Surgery, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou 225001, China. FAU - Li, Xiaolong AU - Li X AD - Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Nantong 226021, China. FAU - Ni, Qingfeng AU - Ni Q AD - Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Nantong 226021, China. FAU - Wang, Daorong AU - Wang D AD - Department of General Surgery, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou 225001, China. FAU - Zhu, Jianwei AU - Zhu J AD - Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Nantong 226021, China. LA - eng GR - JC2019074/Social Development Foundation of Nantong city/ GR - Social Development Foundation of Nantong City/ PT - Journal Article PL - China TA - Acta Biochim Biophys Sin (Shanghai) JT - Acta biochimica et biophysica Sinica JID - 101206716 RN - 0 (ABCB1 protein, human) RN - 0 (ATP Binding Cassette Transporter, Subfamily B) RN - 0 (Antimetabolites, Antineoplastic) RN - 0 (BCL2 protein, human) RN - 0 (BIRC5 protein, human) RN - 0 (LRP5 protein, human) RN - 0 (Low Density Lipoprotein Receptor-Related Protein-5) RN - 0 (MIRN20b microRNA, human) RN - 0 (MicroRNAs) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (RNA, Small Interfering) RN - 0 (SDC2 protein, human) RN - 0 (Survivin) RN - 149769-25-5 (Syndecan-2) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - U3P01618RT (Fluorouracil) SB - IM MH - ATP Binding Cassette Transporter, Subfamily B/genetics/metabolism MH - Animals MH - Antimetabolites, Antineoplastic/pharmacology MH - Base Pairing MH - Cell Line, Tumor MH - Cell Movement/drug effects MH - Cell Proliferation/drug effects MH - Colorectal Neoplasms/drug therapy/*genetics/metabolism/pathology MH - Computational Biology/methods MH - Drug Resistance, Neoplasm/*genetics MH - Extracellular Signal-Regulated MAP Kinases/*genetics/metabolism MH - Female MH - Fluorouracil/*pharmacology MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Low Density Lipoprotein Receptor-Related Protein-5/genetics/metabolism MH - Mice MH - Mice, Nude MH - MicroRNAs/*genetics/metabolism MH - Neoplasm Invasiveness MH - Proto-Oncogene Proteins c-bcl-2/genetics/metabolism MH - RNA, Small Interfering/genetics/metabolism MH - Signal Transduction MH - Survivin/genetics/metabolism MH - Syndecan-2/antagonists & inhibitors/*genetics/metabolism MH - Xenograft Model Antitumor Assays OTO - NOTNLM OT - 5-fluorouracil resistance OT - JNK/ERK OT - colorectal cancer OT - miR-20b-5p OT - syndecan-2 EDAT- 2021/10/02 06:00 MHDA- 2022/02/19 06:00 CRDT- 2021/10/01 08:48 PHST- 2021/04/13 00:00 [received] PHST- 2021/10/02 06:00 [pubmed] PHST- 2022/02/19 06:00 [medline] PHST- 2021/10/01 08:48 [entrez] AID - 6378813 [pii] AID - 10.1093/abbs/gmab124 [doi] PST - ppublish SO - Acta Biochim Biophys Sin (Shanghai). 2021 Nov 10;53(11):1547-1557. doi: 10.1093/abbs/gmab124.