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Wang P, Xu J, Hou Z, Wang F, Song Y, Wang J, Zhu H, Jin H. miRNA-34a promotes proliferation of human pulmonary artery smooth muscle cells by targeting PDGFRA. Cell Prolif 2016; 49:484-93. [PMID: 27302634 DOI: 10.1111/cpr.12265] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 05/07/2016] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Pulmonary arterial hypertension (PAH) is a fast progressing vascular disease characterized by uncontrolled cell proliferation of pulmonary artery smooth muscle cells (PASMCs). Some studies have suggested that PAH and cancers share an apoptosis-resistant state, featuring excessive cell proliferation. The miR-34 family consists of tumour-suppressive miRNAs, and its reduced expression has been reported in numerous cancers; however, its role in hypoxia-induced PAH has not been previously studied. MATERIALS AND METHODS miR-34 family expression was evaluated in a rat model with hypoxia and in cultured hypoxic PASMCs, using real-time quantitative PCR (RT-qPCR). Function of miR-34 family was assessed by transfecting miR-34 mimics and inhibitors. Dual luciferase reporter gene assays, RT-qPCR and Western blotting were performed to validate target genes of miR-34. RESULTS Significant down-regulation of miR-34a in hypoxic lung tissue, pulmonary artery and PASMCs was identified and then effects of miR-34a in modulating cell proliferation in human pulmonary artery smooth muscle cells (hPASMCs) was investigated in vitro. Reduction of miR-34a levels in hPASMCs caused increased proliferation and these effects were reversed by overexpression of miR-34a. miR-34a overexpression down-regulated platelet-derived growth factor receptor alpha (PDGFRA) expression, which is a key factor in PAH development. These results suggest that miR-34a is a potential regulator of proliferation in PASMCs, and that it could be used as a novel treatment strategy in PAH.
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Affiliation(s)
- Peng Wang
- Department of Physiology, College of Basic Medical Sciences, Harbin Medical University, Harbin, China.,Department of Physiology, College of Basic Medical Sciences, Harbin Medical University-Daqing, Daqing, China
| | - Jie Xu
- Department of Physiology, College of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Zhiling Hou
- Department of Emergency Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Fangfang Wang
- Department of Pathophysiology, College of Basic Medical Sciences, Jiamusi University, Jiamusi, China
| | - Yingli Song
- Department of Physiology, College of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Jiao Wang
- Department of Physiology, College of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Hui Zhu
- Department of Physiology, College of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Hongbo Jin
- Department of Physiology, College of Basic Medical Sciences, Harbin Medical University, Harbin, China
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Chang ME, Teng HW. Salvage therapy of imatinib-resistant hypereosinophilic syndrome with PDGFRB rearrangement. JOURNAL OF CANCER RESEARCH AND PRACTICE 2016. [DOI: 10.1016/j.jcrpr.2015.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Ye H, Hong Q, Li Y, Xu X, Huang YI, Xu L, Zhou A, Deng Y, Duan S. A lack of association between the IKZF2 rs12619285 polymorphism and coronary heart disease. Exp Ther Med 2015; 9:1309-1313. [PMID: 25780427 PMCID: PMC4353760 DOI: 10.3892/etm.2015.2282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 01/05/2015] [Indexed: 12/29/2022] Open
Abstract
The IKZF2 rs12619285 polymorphism is associated with the eosinophil count, which has multidimensional functions in the pathogenesis of coronary heart disease (CHD). The aim of the present study was to investigate the contribution of the IKZF2 rs12619285 polymorphism to the risk of CHD in a Han Chinese population. In total, 721 CHD cases and 631 non-CHD controls were recruited for an association study of the IKZF2 rs12619285 polymorphism. Genotyping was performed using the melting temperature-shift polymerase chain reaction method. No statistically significant association was observed between the IKZF2 rs12619285 polymorphism and CHD (odds ratio, 1.139, 95% confidence interval, 0.927-1.334; P=0.17). In addition, subgroup analyses by gender or age were unable to identify any association between IKZF2 rs12619285 and CHD (P>0.05), and there was no significant correlation between IKZF2 rs12619285 and the severity of CHD (P>0.05). The power of the case-control study was determined to be 63.3%. In addition, the G allele frequency was calculated as 63.6% in the Han Chinese population, which was similar to the 59.3% recorded for the HapMap Chinese population of Han Chinese individuals living in Beijing, compared with 24.3% in European descendents (HapMap-CEU). Therefore, the results indicated that the IKZF2 rs12619285 polymorphism was not associated with CHD in a Han Chinese population. The discrepancy in the association between rs12619285 and CHD may be due to the ethnic differences between Han Chinese and European populations.
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Affiliation(s)
- Huadan Ye
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Qingxiao Hong
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Yirun Li
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Xuting Xu
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Y I Huang
- Department of Neurosurgery, Ningbo First Hospital, Ningbo, Zhejiang 315010, P.R. China
| | - Limin Xu
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Annan Zhou
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Youping Deng
- Rush University Cancer Center, and Department of Internal Medicine and Biochemistry, Rush University Medical Center, Chicago, IL 60612, USA
| | - Shiwei Duan
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
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Lian J, Huang Y, Huang RS, Xu L, Le Y, Yang X, Xu W, Huang X, Ye M, Zhou J, Duan S. Meta-analyses of four eosinophil related gene variants in coronary heart disease. J Thromb Thrombolysis 2014; 36:394-401. [PMID: 23328882 DOI: 10.1007/s11239-012-0862-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The goal of our study is to assess the contribution of four eosinophil related gene variants (rs12619285, rs1420101, rs3184504 and rs4143832) to the risk of coronary heart disease (CHD). We conducted four meta-analyses of studies examining the association between four eosinophil related gene variants and the risk of CHD. A systematic search was conducted using MEDLINE, EMBASE, Web of Science and China National Knowledge Infrastructure (CNKI), Wanfang Chinese Periodical. A case-control study was conducted between 162 CHD cases and 119 non-CHD controls to explore their contribution to CHD. For rs3184504 of SH2B3 gene, the meta-analysis was performed among 19 study stages among 94,555 participants. Significant association between rs3184504 and CHD risk was observed in European and South Asian populations (OR = 1.13, 95% CI = 1.10-1.16, p < 0.0001, fixed-effect method). For the other SNPs (rs12619285, rs1420101, and rs4143832), we combined our case-control data with the previous studies and found no association of them with the risk of CHD. No significant contribution of the four genetic variants to CHD was observed in Han Chinese (p > 0.05). In conclusion, our results supported a significant association between rs3184504 of SH2B3 gene and the risk of CHD in Europeans and South Asians, although we were unable to observe association between the four variants and the risk of CHD in Han Chinese.
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Affiliation(s)
- Jiangfang Lian
- Ningbo Medical Center, Lihuili Hospital, Ningbo University, Ningbo, 315041, Zhejiang, China
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Tang TC, Chang H, Chuang WY. Complete response of myeloid sarcoma with FIP1L1-PDGFRA -associated myeloproliferative neoplasms to imatinib mesylate monotherapy. Acta Haematol 2012; 128:83-7. [PMID: 22722648 DOI: 10.1159/000338217] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Accepted: 03/06/2012] [Indexed: 01/31/2023]
Abstract
Myeloid sarcoma (MS) is a localized, extramedullary tumor of acute myeloid leukemia (AML) that typically presents either de novo or concomitantly with myeloproliferative neoplasms (MPN), AML and myelodysplastic syndrome. Patients who have MS must be treated with intensive chemotherapy, as are patients with AML, because MS usually progresses to a systemic manifestation and leads to dismal outcomes. FIP1L1-PDGFRA-associated MPN, a subtype of myeloid and lymphoid neoplasm, is characterized by eosinophilia and abnormalities in the PDGFRA, PDGFRB or FGFR1 gene. Fusion of the FIP1L1 and PDGFRA genes activates the tyrosine kinase. As a result, imatinib mesylate (IM) is widely used for the treatment of this disorder. The coexistence of FIP1L1-PDGFRA-associated MPN and MS is extremely rare. Patients with this condition fail to achieve durable remission and long-term survival without a combination of intensive chemotherapy and IM. Here, we report a case of MS and FIP1L1-PDGFRA-associated MPN that was successfully treated with IM monotherapy.
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Affiliation(s)
- Tzung-Chih Tang
- Division of Hematology-Oncology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, ROC.
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