PMID- 35339472 OWN - NLM STAT- MEDLINE DCOM- 20220413 LR - 20220506 IS - 1090-2422 (Electronic) IS - 0014-4827 (Linking) VI - 415 IP - 1 DP - 2022 Jun 1 TI - Significance of a tumor microenvironment-mediated P65-miR-30a-5p-BCL2L11 amplification loop in multiple myeloma. PG - 113113 LID - S0014-4827(22)00106-9 [pii] LID - 10.1016/j.yexcr.2022.113113 [doi] AB - Despite significant progress in the treatment of myeloma, multiple myeloma (MM) remains an incurable hematological malignancy due to cell adhesion-mediated drug resistance (CAM-DR) phenotype. However, data on the molecular mechanisms underlying the CAM-DR remains scanty. Here, we identified a miRNA-mRNA regulatory network in myeloma cells that are directly adherent to bone marrow stromal cells (BMSCs). Our data showed that the BMSCs up-regulated miR-30a-5p and down-regulated BCL2L11 at both mRNA and protein level in the myeloma cells. Besides, luciferase reporter genes demonstrated direct interaction between miR-30a-5p and BCL2L11 gene. Moreover, the BMSCs activated NF-KappaB signaling pathway in myeloma cells and the NF-kappaB P65 was shown to directly bind the miR-30a-5p promoter region. Moreover, suppression of the miR-30a-5p or upregulation of the BCL2L11 promoted apoptosis of the myeloma cells independent of the BMSCs, thus suggesting clinical significance of miR-30a-5p inhibitor and PLBCL2L11 plasmid in CAM-DR. Together, our data demonstrated the role of P65-miR-30a-5p-BCL2L11 loop in CAM-DR myeloma cells. These findings give new insights into the role of tumor microenvironment in the treatment of patients with myeloma. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Xie, Lingling AU - Xie L AD - Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China. Electronic address: xll19882021@163.com. FAU - Wei, Jinhong AU - Wei J AD - School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, China. Electronic address: 375668996@qq.com. FAU - Gao, Zhihua AU - Gao Z AD - Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China. FAU - Huang, Hongming AU - Huang H AD - Department of Hematology, Affiliated Hospital of Nantong University, Nantong, 226001, China. FAU - Ju, Shaoqing AU - Ju S AD - Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China. FAU - Wang, Xudong AU - Wang X AD - Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, China. LA - eng PT - Journal Article DEP - 20220323 PL - United States TA - Exp Cell Res JT - Experimental cell research JID - 0373226 RN - 0 (BCL2L11 protein, human) RN - 0 (Bcl-2-Like Protein 11) RN - 0 (MicroRNAs) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) SB - IM MH - Bcl-2-Like Protein 11/metabolism MH - Cell Line, Tumor MH - Cell Proliferation MH - Gene Expression Regulation, Neoplastic/genetics MH - Humans MH - *MicroRNAs/genetics/metabolism MH - *Multiple Myeloma/genetics MH - NF-kappa B/metabolism MH - RNA, Messenger MH - Tumor Microenvironment/genetics OTO - NOTNLM OT - Cell adhesion-mediated drug resistance OT - NF-KappaB signaling pathway OT - Tumor microenvironment OT - miRNA-mRNA regulatory network OT - microRNAs EDAT- 2022/03/28 06:00 MHDA- 2022/04/14 06:00 CRDT- 2022/03/27 20:20 PHST- 2021/09/25 00:00 [received] PHST- 2022/03/20 00:00 [revised] PHST- 2022/03/21 00:00 [accepted] PHST- 2022/03/28 06:00 [pubmed] PHST- 2022/04/14 06:00 [medline] PHST- 2022/03/27 20:20 [entrez] AID - S0014-4827(22)00106-9 [pii] AID - 10.1016/j.yexcr.2022.113113 [doi] PST - ppublish SO - Exp Cell Res. 2022 Jun 1;415(1):113113. doi: 10.1016/j.yexcr.2022.113113. Epub 2022 Mar 23.