PMID- 29749437 OWN - NLM STAT- MEDLINE DCOM- 20181002 LR - 20190221 IS - 1791-2423 (Electronic) IS - 1019-6439 (Linking) VI - 53 IP - 1 DP - 2018 Jul TI - Oncogenic IL7R is downregulated by histone deacetylase inhibitor in esophageal squamous cell carcinoma via modulation of acetylated FOXO1. PG - 395-403 LID - 10.3892/ijo.2018.4392 [doi] AB - The interleukin-7 receptor (IL7R) is generally expressed in immune cells and is critical in survival, development and homeostasis in the immune system. Advanced genome-wide cancer studies have reported that IL7R is genetically amplified in human esophageal squamous cell carcinoma (ESCC), however, the exact role of IL7R in ESCC has not been investigated. In the present study, it was found that IL7R was overexpressed in ESCC cohorts and the loss of IL7R induced anti-oncogenic effects in ESCC cell lines. A small panel of epigenetic drugs were screened for their ability to downregulate the expression of IL7R. Unexpectedly, apicidin, a histone deacetylase (HDAC) inhibitor, effectively downregulated the expression of IL7R in a dose-dependent manner at an early time-point, as determined by quantitative polymerase chain reaction and IL7R immunostaining, and did not require de novo protein synthesis. Of note, apicidin induced the acetylation of Forkhead box-containing protein, O subfamily 1, which acts as a repressor at the IL7R promoter, accompanied with depleted active histone modifications based on chromatin immunoprecipitation assay. Taken together, these results demonstrated that targeting oncogenic IL7R in ESCC by HDAC inhibitors may be a valuable therapeutic approach. FAU - Kim, Myoung Jun AU - Kim MJ AD - Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea. FAU - Choi, Sung Kyung AU - Choi SK AD - Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea. FAU - Hong, Seong Hwi AU - Hong SH AD - Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea. FAU - Eun, Jung Woo AU - Eun JW AD - Functional RNomics Research Center, College of Medicine, The Catholic University, Seoul 06591, Republic of Korea. FAU - Nam, Suk Woo AU - Nam SW AD - Functional RNomics Research Center, College of Medicine, The Catholic University, Seoul 06591, Republic of Korea. FAU - Han, Jeung-Whan AU - Han JW AD - Research Center for Epigenome Regulation, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea. FAU - You, Jueng Soo AU - You JS AD - Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea. LA - eng PT - Journal Article DEP - 20180502 PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 (FOXO1 protein, human) RN - 0 (Forkhead Box Protein O1) RN - 0 (Histone Deacetylase Inhibitors) RN - 0 (IL7R protein, human) RN - 0 (Interleukin-7 Receptor alpha Subunit) RN - 0 (Peptides, Cyclic) RN - 0 (apicidin) SB - IM MH - Acetylation/drug effects MH - Apoptosis/drug effects MH - Carcinoma, Squamous Cell/*drug therapy/genetics/pathology MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Esophageal Neoplasms/*drug therapy/genetics/pathology MH - Esophageal Squamous Cell Carcinoma MH - Forkhead Box Protein O1/*genetics MH - Gene Expression Regulation, Neoplastic/drug effects MH - Histone Deacetylase Inhibitors/*pharmacology MH - Humans MH - Interleukin-7 Receptor alpha Subunit/*genetics MH - Peptides, Cyclic/pharmacology EDAT- 2018/05/12 06:00 MHDA- 2018/10/03 06:00 CRDT- 2018/05/12 06:00 PHST- 2018/01/01 00:00 [received] PHST- 2018/04/18 00:00 [accepted] PHST- 2018/05/12 06:00 [pubmed] PHST- 2018/10/03 06:00 [medline] PHST- 2018/05/12 06:00 [entrez] AID - 10.3892/ijo.2018.4392 [doi] PST - ppublish SO - Int J Oncol. 2018 Jul;53(1):395-403. doi: 10.3892/ijo.2018.4392. Epub 2018 May 2.