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Bae JS, Lee JW, Joung JG, Cho HW, Ju HY, Yoo KH, Koo HH, Sung KW. Clinical significance of germline telomere length and associated genetic factors in patients with neuroblastoma. Sci Rep 2022; 12:12954. [PMID: 35902621 PMCID: PMC9334347 DOI: 10.1038/s41598-022-17246-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 07/22/2022] [Indexed: 11/18/2022] Open
Abstract
Studies investigating the relationship between germline telomere length and the clinical characteristics of tumors are very limited. This study evaluated the relationship between germline telomere length and the clinical characteristics of neuroblastoma. In addition, a genome-wide association study (GWAS) was performed to investigate the genetic factors associated with germline telomere length. The germline telomere length of peripheral blood mononuclear cells from 186 patients with neuroblastoma was measured by quantitative polymerase chain reaction. The association between germline telomere length and clinical characteristics, including long-term survival, was investigated. For the GWAS, genotyping was performed with a high-density bead chip (Illumina, San Diego, CA, USA). After strict quality-control checks of the samples, an association analysis was conducted. The result showed that longer germline telomeres were significantly associated with longer event-free survival (P = 0.032). To identify significantly assocated genetic markers for germline telomere length, genome wide association analysis was performed. As a result, several single nucleotide polymorphisms located in HIVEP3, LRRTM4, ADGRV1, RAB30, and CHRNA4 genes were discovered. During gene-based analysis (VEGAS2 tool), the CNTN4 gene had the most significant association with germline telomere length (P = 1.0E−06). During gene ontology analysis, susceptible genes associated with germline telomere length were mainly distributed in neurite morphogenesis and neuron development. A longer germline telomere length is associated with favorable prognostic factors at diagnosis and eventually better event-free survival in patients with neuroblastoma. In addition, the GWAS demonstrated that genetic markers and genes related to germline telomere length are associated with neurite morphogenesis and neuron development. Further research with larger cohorts of patients and functional investigations are needed.
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Affiliation(s)
- Joon Seol Bae
- Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Ji Won Lee
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Je-Gun Joung
- Department of Biomedical Science, Cha Bundang Medical Center, Cha University, Seongnam, Republic of Korea
| | - Hee Won Cho
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Hee Young Ju
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Keon Hee Yoo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Hong Hoe Koo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Ki Woong Sung
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.
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Zhou R, Guo F, Xiang C, Zhang Y, Yang H, Zhang J. Systematic Study of Crucial Transcription Factors of Coptidis rhizoma Alkaloids against Cerebral Ischemia-Reperfusion Injury. ACS Chem Neurosci 2021; 12:2308-2319. [PMID: 34114461 DOI: 10.1021/acschemneuro.0c00730] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Coptidis rhizoma alkaloids (CRAs), extracted from Coptidis rhizoma, have been indicated to play important neuroprotective roles, but the mechanism underlying has not been determined, especially from the perspective of transcription factors (TFs). In this study, crucial TFs involved in the protective activity of CRA were revealed based on RNA-Seq technology, proteomics, and network pharmacological analysis of the effects of CRA on middle cerebral artery occlusion-mediated cerebral ischemia-reperfusion (I/R) injury. Importantly, CRA significantly reduced the infarction rate and neurological deficiency score. Moreover, CRA significantly decreased the levels of TNF-α, MCP-1, and IL-1β. In addition, seven TFs, including Ncor1, Smad1, Bhlhe41, Stat3, Sp100, Satb2, and Lrpprc, were found to be crucial TFs, and five of these TFs were associated with inflammation. Furthermore, eight compounds in CRA were associated with the identified TFs through network pharmacological analysis. The alteration of Lrpprc and Sabt2 was further confirmed by measuring their downstream genes, including Pigg, Hhatl, Wdr77, Mpped1, Arpp21, Ppfia3, Rims1, and Cacna2d1 by reverse transcriptase polymerase chain reaction. Thus, these seven TFs may be important targets in CRA-mediated protection against I/R injury. This research provides a new view of the protective effect of CRA against cerebral I/R injury and reveals new therapeutic targets for treating cerebral ischemia.
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Affiliation(s)
- Rui Zhou
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Feifei Guo
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Changpei Xiang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yi Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Hongjun Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jingjing Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
- Chinese Institute for Brain Research, Beijing 102206, China
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Clochard J, Jerz G, Schmieder P, Mitdank H, Tröger M, Sama S, Weng A. A new acetylated triterpene saponin from Agrostemma githago L. modulates gene delivery efficiently and shows a high cellular tolerance. Int J Pharm 2020; 589:119822. [PMID: 32861772 DOI: 10.1016/j.ijpharm.2020.119822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/19/2020] [Accepted: 08/24/2020] [Indexed: 11/17/2022]
Abstract
Transfection is the process to deliver nucleic acid into eukaryotic cells. Different transfection techniques already exist. However, they can be expensive and toxic toward subjected cells. Previous research shed light on natural occurring molecules called triterpene saponins that have great potential for the non-viral gene delivery. Using a combination of different chromatographic techniques and in vitro transfection bioassays, a new triterpenoid saponin (agrostemmoside E) from the plant Agrostemma githago L. was isolated. Agrostemmoside E was characterized by mass spectrometry, intense NMR spectroscopy and was identified as 3-{O-ß-D-Galactopyranosyl-(1→2)]-[ß-D-xylopyranosyl-(1→3)]-ß-D-glucuronopyranosyl} quillaic acid 28-O-{[ß-D-4,6-di-(O-acetyl)-glucopyranosyl-(1→3)]-[ß-D-xylopyranosyl-(1→4)]-α-L-rhamnopyranosyl-(1→2)}-[3,4-di-(O-acetyl)-ß-D-quinovopyranosyl-(1→4)]-ß-D-fucopyranoside ester. Agrostemmoside E has a great potential for delivery of gene loaded nanoplexes and increased the transfection efficiency by 70% compared to 2% without agrostemmoside E. By comparative toxicity studies, we show that agrostemmoside E can be applied at high concentrations without toxicity, justifying its use as a new tool for gene transfections.
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Affiliation(s)
- Jason Clochard
- Institut für Pharmazie, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Gerold Jerz
- Institut für Lebensmittelchemie, Technische Universität Braunschweig, Schleinitz-Str. 20, 38106 Braunschweig, Germany
| | - Peter Schmieder
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Roessle-Str., 1013125 Berlin, Germany
| | - Hardy Mitdank
- Institut für Pharmazie, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Meike Tröger
- Institut für Pharmazie, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Simko Sama
- Institut für Pharmazie, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany.
| | - Alexander Weng
- Institut für Pharmazie, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany.
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Zhang D, Zheng Q, Wang C, Zhao N, Liu Y, Wang E. BHLHE41 suppresses MCF-7 cell invasion via MAPK/JNK pathway. J Cell Mol Med 2020; 24:4001-4010. [PMID: 32073238 PMCID: PMC7171311 DOI: 10.1111/jcmm.15033] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/16/2019] [Accepted: 12/17/2019] [Indexed: 11/27/2022] Open
Abstract
Deregulation of the basic helix‐loop‐helix family member e41 (BHLHE41) has been characterized as a marker of progression of several cancers. In this study, we aimed to explore the mechanism by which BHLHE41 regulates the invasion of breast cancer cells. BHLHE41 suppresses, whereas the silencing of BHLHE41 promotes tumour invasion of both MCF‐7 and MDA‐MB‐231 cells. Meanwhile, BHLHE41 down‐regulated the transcription and translation of SNAI1, SNAI2, VIM and CDH2, and up‐regulated those of CLDN1, CLDN4 and CDH1. Reporter assay indicated that silencing of BHLHE41 dramatically activated the MAPK/JNK signalling pathway in MCF‐7 cell line and the hypoxia signalling pathway in MDA‐MB‐231 cell line. Furthermore, silencing of BHLHE41 activated the MAPK/JNK signalling pathway by up‐regulating phosphorylated JNK and failed to affect the expression of HIF‐1 alpha in MCF‐7 cells. After blocking the MAPK/JNK signalling pathway by specific inhibitor SP600125, silencing of BHLHE41 failed to promote tumour cell invasion. These results suggest that BHLHE41 facilitates MCF‐7 cell invasion mainly via the activation of MAPK/JNK signalling pathway. In conclusion, although BHLHE41 suppresses tumour invasion in MCF‐7 and MDA‐MB‐231 cell lines, the specific regulatory mechanisms may be different.
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Affiliation(s)
- Di Zhang
- Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang, China.,Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Qin Zheng
- Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang, China.,Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Chen Wang
- Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang, China.,Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Na Zhao
- Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang, China.,Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Yang Liu
- Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang, China.,Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Enhua Wang
- Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang, China.,Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang, China
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Wang C, Zhao N, Zheng Q, Zhang D, Liu Y. BHLHE41 promotes U87 and U251 cell proliferation via ERK/cyclinD1 signaling pathway. Cancer Manag Res 2019; 11:7657-7672. [PMID: 31616182 PMCID: PMC6698591 DOI: 10.2147/cmar.s214697] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/24/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose The biological functions of BHLHE41 in the proliferation of glioblastoma remained unexplored. We aimed to investigate the biological roles and underlying molecular mechanisms of BHLHE41 in glioblastoma. Materials and methods We used multiple methods, including Western blot analysis, soft agar colony-formation assay, CCK8 assay, and flow cytometry, to evaluate the changes in multiple cellular functions after BHLHE41 knockdown or overexpression in U87 and U251 cell lines. The TCGA database was then used to analyze the associations between BHLHE41 expression with clinicopathological factors and the overall survival (OS) of glioma patients. Results This study determined that overexpression of BHLHE41 promoted glioma cell proliferation and colony formation. Besides, BHLHE41 upregulated cyclinD1, cyclinD3, and cyclinE1 expression and drove phase transition from G1 to S and G2 phases by upregulating these cyclins. In contrast, knockdown of BHLHE41 had an opposite effect on all of these parameters. However, BHLHE41 had no effect on apoptosis. Moreover, BHLHE41 activated MAPK/ERK signaling pathway to upregulate cyclinD1 expression. After the ERK signal pathway was blocked by a specific inhibitor, SCH772984, cyclinD1 upregulation was reversed. Furthermore, the median OS of low-grade glioma (LGG) patients with low to median level of BHLHE41 was 22.6 months, longer than that of the patients with high level of BHLHE41 (21.0 months). Conclusion BHLHE41 has an important role in the proliferation of glioblastoma and could serve as a novel candidate for targeted therapy of glioblastoma.
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Affiliation(s)
- Chen Wang
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang 110122, People's Republic of China.,Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang 110001, People's Republic of China.,Department of Pathology, Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, People's Republic of China
| | - Na Zhao
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang 110122, People's Republic of China.,Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang 110001, People's Republic of China.,Department of Pathology, Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, People's Republic of China
| | - Qin Zheng
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang 110122, People's Republic of China.,Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang 110001, People's Republic of China.,Department of Pathology, Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, People's Republic of China
| | - Di Zhang
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang 110122, People's Republic of China.,Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang 110001, People's Republic of China.,Department of Pathology, Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, People's Republic of China
| | - Yang Liu
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang 110122, People's Republic of China.,Department of Pathology, The First Affiliated Hospital, China Medical University, Shenyang 110001, People's Republic of China.,Department of Pathology, Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, People's Republic of China
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