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https://www.readbyqxmd.com/read/27150632/epigenetic-identification-of-znf545-as-a-functional-tumor-suppressor-in-multiple-myeloma-via-activation-of-p53-signaling-pathway
#1
Yu Fan, Qian Zhan, Hongying Xu, Lili Li, Chen Li, Qian Xiao, Shili Xiang, Tianli Hui, Tingxiu Xiang, Guosheng Ren
The KRAB-zinc-finger protein ZNF545 was recently identified as a potential suppressor gene in several tumors. However, the regulatory mechanisms of ZNF545 in tumorigenesis remain unclear. In this study, we investigated the expression and roles of ZNF545 in multiple myeloma (MM). ZNF545 was frequently downregulated in MM tissues compared with non-tumor bone marrow tissues. ZNF545 expression was silenced by promoter methylation in MM cell lines, and could be restored by demethylation treatment. ZNF545 methylation was detected in 28...
June 10, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/25714013/poor-survival-is-associated-with-the-methylated-degree-of-zinc-finger-protein-545-znf545-dna-promoter-in-gastric-cancer
#2
Jingyu Deng, Han Liang, Guoguang Ying, Qiuping Dong, Rupeng Zhang, Jun Yu, Daiming Fan, Xishan Hao
Zinc-finger protein 545 (ZNF545) was identified as a gastric tumour suppressor and potentially independent prognostic factor. At the present study, we found that lower expression of ZNF545 was specific in gastric cancer (GC) tissues, and the inconsistently methylated levels of ZNF545 promoter were identified in the gastric cancer tissues. In the methylation-specific PCR (MSP) analysis cohort, we found that GC patients with hypermethylated ZNF545 promoter exhibited significantly shorter median OS than those with unmethylated ZNF545 promoter and those with hypomethylated ZNF545 promoter...
February 28, 2015: Oncotarget
https://www.readbyqxmd.com/read/25360542/zinc-finger-protein-545-inhibits-cell-proliferation-as-a-tumor-suppressor-through-inducing-apoptosis-and-is-disrupted-by-promoter-methylation-in-breast-cancer
#3
Yun Xiao, Tingxiu Xiang, Xinrong Luo, Chunhong Li, Qianqian Li, Weiyan Peng, Lili Li, Shuman Li, Zhenyu Wang, Liping Tang, Guosheng Ren, Qian Tao
Krüppel-associated box-containing zinc finger proteins (KRAP-ZFPs) are well recognized as key regulators of transcription, which play a crucial role in the regulation of cell proliferation, differentiation, apoptosis and tumorigenesis. We previously identified a KRAP-ZFP protein ZNF545 acting as a tumor suppressor involved in tumor pathogenesis. However, its expression and biological function in breast cancer remain elusive. In this study, we found that ZNF545 was frequently downregulated in estrogen receptor-positive (ER+), progesterone receptor-positive (PR+) and human epidermal growth factor receptor 2-negative (HER2-) breast tumor tissues compared with paired adjacent non-tumor tissues...
2014: PloS One
https://www.readbyqxmd.com/read/22679109/a-novel-19q13-nucleolar-zinc-finger-protein-suppresses-tumor-cell-growth-through-inhibiting-ribosome-biogenesis-and-inducing-apoptosis-but-is-frequently-silenced-in-multiple-carcinomas
#4
Yingduan Cheng, Pei Liang, Hua Geng, Zhaohui Wang, Lili Li, Suk Hang Cheng, Jianming Ying, Xianwei Su, Ka Man Ng, Margaret H L Ng, Tony S K Mok, Anthony T C Chan, Qian Tao
Epigenetic disruption of tumor suppressor genes is frequently involved in tumorigenesis. We identified a novel 19q13 KRAB domain-containing zinc finger protein, ZNF545/ZFP82, broadly expressed in normal tissues but downregulated in multiple tumor cell lines. The ZNF545 promoter contains a CpG island, which is frequently methylated in cell lines. The transcriptional silencing of ZNF545 could be reversed by pharmacologic or genetic demethylation, indicating direct epigenetic silencing. ZNF545 was also frequently methylated in multiple primary tumors of nasopharyngeal, esophageal, lung, gastric, colon, and breast, but rarely in normal epithelial tissues and paired normal tissues...
July 2012: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/22580414/zinc-finger-protein-545-is-a-novel-tumour-suppressor-that-acts-by-inhibiting-ribosomal-rna-transcription-in-gastric-cancer
#5
Shiyan Wang, Yingduan Cheng, Wan Du, Leina Lu, Liang Zhou, Huating Wang, Wei Kang, Xiaoxing Li, Qian Tao, Joseph J Y Sung, Jun Yu
OBJECTIVE: Zinc-finger protein 545 (ZNF545) is a member of the family of Krüppel-associated box-containing zinc-finger proteins. The aim of this study was to clarify its biological function as a tumour suppressor in gastric cancer. DESIGN: The biological function of ZNF545 was determined by cell growth and apoptosis assays. The ZNF545 target signal pathway was identified by promoter luciferase assay, northern blot, run-on transcription assay, chromatin immunoprecipitation and coimmunoprecipitation assays...
June 2013: Gut
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