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Ren G, Jv H, Tian Z, Gvetadze SR, Hu J, Zhao M, Zhou G, Zhang C, Zhang Z. Ultrasound hyperthermia induces apoptosis in head and neck squamous cell carcinoma: An in vitro study. Med Oral Patol Oral Cir Bucal 2017; 22:e289-e296. [PMID: 28390119 PMCID: PMC5432077 DOI: 10.4317/medoral.21245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 12/22/2016] [Indexed: 02/06/2023] Open
Abstract
Background Hyperthermia is considered an efficient complement in the treatment of head and neck squamous cell carcinoma (HNSCC). Hyperthermia induces cell apoptosis in a temperature- and time-dependent manner. However, the molecular mechanism of hyperthermia remains unclear. The aim of this study was to investigate the mechanism of apoptosis induced by ultrasound hyperthermia in HNSCC cell lines HN-30 and HN-13. Material and Methods We examined the dynamic changes of early apoptosis and secondary necrosis in HN-30 and HN-13 cells treated by hyperthermia at 42°C for 10 min. We further examined mitochondrial membrane potential in vitro by ultrasound hyperthermia for different heating temperatures (38-44°C, 10 min) and heating times (42°C, 10-50 min). After heating by ultrasound at 42°C for 10 min, the apoptosis index achieved its highest level at 8 h after treatment, decreased rapidly and remained constant at a reduced level at 12 h. Results The level of secondary necrosis increased with the level of early apoptosis but remained at a higher level until 14 h. The level of secondary necrosis correlated with the level of early apoptosis (HN-13: r=0.7523, P=0.0030; HN-30: r=0.6510, P=0.016). The fractions of cells with low mitochondrial membrane potential (Δψ) in the heating-temperature grads group and heating-time grads group decreased significantly over time. Therefore, HN-30 and HN-13 cells developed apoptosis after ultrasound hyperthermia treatment with decreases in the mitochondrial transmembrane potential level. Conclusions Ultrasound hyperthermia induces apoptosis in HN-30 and HN-13 cells, possibly via the mitochondrial caspase pathway. Key words:Head and neck squamous cell carcinoma, apoptosis, mitochondrial membrane potential, ultrasound hyperthermia.
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Wang J, Qian J, Wang Y, Zhao J, Wang Q, Tian Z, Li M, Zeng X. Serological biomarkers as risk factors of SLE-associated pulmonary arterial hypertension: a systematic review and meta-analysis. Lupus 2017; 26:1390-1400. [PMID: 28409522 DOI: 10.1177/0961203317702255] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective This article aims to determine the serological biomarkers which can be considered as risk factors of systemic lupus erythematosus (SLE)-associated pulmonary arterial hypertension by a systematic review and meta-analysis. Methods This study was conducted in accordance with the PRISMA statement. The search database included MEDLINE, EMBASE, Cochrane Library and Scopus. The Newcastle-Ottawa scale was used for the quality assessment. The odds ratio was the primary measure of effect of the risk factors. Results Twelve studies were included in this meta-analysis. The results identified the anti-RNP antibody and anti-Sm antibody as risk factors for SLE-associated pulmonary arterial hypertension with the pooled odds ratios 3.68 (95% confidence interval 2.04-6.63, P < 0.0001) and 1.71 (95% confidence interval 1.06-2.76, P = 0.03), respectively. Conclusion Pulmonary arterial hypertension is a serious complication of SLE with a worse prognosis than SLE patients without pulmonary arterial hypertension. The early recognition of pulmonary arterial hypertension with transthoracic echocardiography routinely performed in SLE patients with risk factors is necessary, especially in Asian patients.
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Shen X, Yuan J, Zhang M, Li W, Ni B, Wu Y, Jiang L, Fan W, Tian Z. The increased expression of TCF3 is correlated with poor prognosis in Chinese patients with nasopharyngeal carcinoma. Clin Otolaryngol 2017; 42:824-830. [PMID: 28107608 DOI: 10.1111/coa.12834] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2016] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Regulatory factors controlling stem cell identity and self-renewal are often active in aggressive cancers and are thought to promote cancer growth and progression. B-cell-specific transcription factor 3 (TCF3/E2A) is a member of the T-cell factor/lymphoid enhancer factor (TCF/LEF) transcription factor family that is central to regulating epidermal and embryonic stem cell identity. It has been reported that TCF3 was connected with the development and progression of a number of human cancers. In this study, we aimed to identify the expression of TCF3 in human nasopharyngeal carcinoma (NPC) and evaluate its clinical significance. DESIGN To investigate the expression of TCF3 in NPC and its relationship to prognosis. SETTING An in vitro study. MAIN OUTCOME MEASURES We analysed the expression of TCF3 in NPC and in non-tumourous nasopharyngeal tissues by quantitative RT-PCR and Western blotting. The expression patterns of TCF3 in 117 archived paraffin-embedded NPC specimens were characterised by immunohistochemistry, and the correlation between the TCF3 protein expression and the clinicopathological features of NPC was analysed. RESULTS We observed that TCF3 had a higher expression in NPC than in non-tumourous nasopharyngeal tissues of 117 archived paraffin-embedded NPC specimens, and 80 (68.4%) biopsy tissues revealed high levels of TCF3 expression. Furthermore, statistical analyses demonstrated that the increased expression of TCF3 was closely related to clinical stage, locoregional recurrence and distant metastasis of NPC. NPC patients with high levels of TCF3 expression had a shorter survival time, whereas patients with lower levels of TCF3 expression survived longer. Moreover, multivariate analysis suggested that the upregulation of TCF3 was a critical prognostic factor for NPC. CONCLUSIONS Our observations suggest, for the first time, that TCF3 is significantly associated with the development and progression of NPC, which can be used as an important prognostic marker for patients with NPC and may be an effective target for the treatment of NPC.
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Feng J, Huang XF, Zhang CL, Shen KN, Zhang CL, Sun J, Tian Z, Cao XX, Zhang L, Zhou DB, Li J. [Analysis of clinical characteristics and outcome of patients with very high risk primary immunoglobulin light-chain amyloidosis]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2017; 38:107-111. [PMID: 28279033 PMCID: PMC7354162 DOI: 10.3760/cma.j.issn.0253-2727.2017.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
目的 探讨极高危原发性轻链型淀粉样变(pAL)患者的临床特征及其预后。 方法 回顾性分析2009年1月至2016年2月在北京协和医院确诊的205例pAL患者的临床资料,将梅奥2004分期Ⅲb期或梅奥2012分期4期的患者定义为极高危患者。 结果 34例(16.6%)为极高危pAL患者,中位年龄57(20~84)岁,男性22例(64.7%)。所有患者均有心脏受累,15例(44.1%)患者的受累脏器≥ 3个。27例(81.8%)患者的心功能分级为3~4级,中位血清肌钙蛋白I为0.25(0.08~1.23)µg/L,中位血清N末端B型利钠肽前体为11 733(1 892~103 277)ng/L,中位血清游离轻链差值为403.0(18.1~1 911.6)mg/L,8例(24.2%)患者的骨髓浆细胞比例≥0.100。16例(47.1%)患者采用硼替佐米为主的化疗方案,总体血液学缓解率为58.3%。中位随诊27(1~40)个月,14例(41.2%)患者在诊断后3个月内死亡,中位生存时间仅为4个月。3、6、12和24个月的预期生存率分别为51.3%、44.0%、35.2%和29.6%。一线化疗后获得血液学缓解、未获得血液学缓解以及姑息治疗的患者1年预计存活率分别为90.9%、11.1%及0(P<0.001)。 结论 极高危pAL患者的预后极差,早期病死率高,获得血液学缓解的pAL患者有着明显更好的预后。
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Tian Z, Zhang Y. Molecular characterization and functional analysis of pheromone binding protein 1 from Cydia pomonella (L.). INSECT MOLECULAR BIOLOGY 2016; 25:769-777. [PMID: 27491022 DOI: 10.1111/imb.12261] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A full-length cDNA encoding Cydia pomonella pheromone binding protein 1 (CpomPBP1) was cloned and characterized. CpomPBP1, possessing the typical characteristics of lepidopteran odorant binding proteins, was detected to be specifically expressed in the antennae of male and female moths at the mRNA and protein level. Soluble recombinant CpomPBP1 was subjected to in vitro binding to analyse its binding properties and to search for potentially active semiochemicals. A competitive binding assay showed that three 12-carbon ligands, codlemone, 1-dodecanol and E,E-2,4-dodecadienal, were able to bind to CpomPBP1 in decreasing order of affinity. Moreover, unlike the wild-type CpomPBP1, the C-terminus truncated CpomPBP1 exhibited high affinity to ligands even in an acidic environment, suggesting that the C-terminus plays a role in preventing ligands from binding to CpomPBP1 in a lower pH environment.
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Si L, Xu H, Zhou X, Zhang Z, Tian Z, Wang Y, Wu Y, Zhang B, Niu Z, Zhang C, Fu G, Xiao S, Xia Q, Zhang L, Zhou D. Generation of influenza A viruses as live but replication-incompetent virus vaccines. Science 2016; 354:1170-1173. [DOI: 10.1126/science.aah5869] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 11/08/2016] [Indexed: 01/16/2023]
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Jarpa-Parra M, Tian Z, Temelli F, Zeng H, Chen L. Understanding the stability mechanisms of lentil legumin-like protein and polysaccharide foams. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.07.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nakayama M, Kondo T, Tian Z, Ishikawa JJ, Halim M, Bareille C, Malaeb W, Kuroda K, Tomita T, Ideta S, Tanaka K, Matsunami M, Kimura S, Inami N, Ono K, Kumigashira H, Balents L, Nakatsuji S, Shin S. Slater to Mott Crossover in the Metal to Insulator Transition of Nd_{2}Ir_{2}O_{7}. PHYSICAL REVIEW LETTERS 2016; 117:056403. [PMID: 27517783 DOI: 10.1103/physrevlett.117.056403] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Indexed: 06/06/2023]
Abstract
We present an angle-resolved photoemission study of the electronic structure of the three-dimensional pyrochlore iridate Nd_{2}Ir_{2}O_{7} through its magnetic metal-insulator transition. Our data reveal that metallic Nd_{2}Ir_{2}O_{7} has a quadratic band, touching the Fermi level at the Γ point, similar to that of Pr_{2}Ir_{2}O_{7}. The Fermi node state is, therefore, a common feature of the metallic phase of the pyrochlore iridates. Upon cooling below the transition temperature, this compound exhibits a gap opening with an energy shift of quasiparticle peaks like a band gap insulator. The quasiparticle peaks are strongly suppressed, however, with further decrease of temperature, and eventually vanish at the lowest temperature, leaving a nondispersive flat band lacking long-lived electrons. We thereby identify a remarkable crossover from Slater to Mott insulators with decreasing temperature. These observations explain the puzzling absence of Weyl points in this material, despite its proximity to the zero temperature metal-insulator transition.
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Folkerts MM, Long T, Radke RJ, Tian Z, Jia X, Chen M, Lu W, Jiang SB. WE-AB-207B-07: Dose Cloud: Generating “Big Data” for Radiation Therapy Treatment Plan Optimization Research. Med Phys 2016. [DOI: 10.1118/1.4957788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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110
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Li B, Tian Z, Zhou L, Jiang S, Jia X. SU-D-206-01: Employing a Novel Consensus Optimization Strategy to Achieve Iterative Cone Beam CT Reconstruction On a Multi-GPU Platform. Med Phys 2016. [DOI: 10.1118/1.4955655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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111
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Qin N, Shen C, Tian Z, Jiang S, Jia X. SU-D-BRC-01: An Automatic Beam Model Commissioning Method for Monte Carlo Simulations in Pencil-Beam Scanning Proton Therapy. Med Phys 2016. [DOI: 10.1118/1.4955620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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112
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Qin N, Pinto M, Tian Z, Dedes G, Pompos A, Jiang S, Parodi K, Jia X. SU-C-BRC-06: OpenCL-Based Cross-Platform Monte Carlo Simulation Package for Carbon Ion Therapy. Med Phys 2016. [DOI: 10.1118/1.4955553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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113
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Chiu T, Long T, Modiri A, Tian Z, Sawant A, Yan Y, Jiang S, Gu X. TH-EF-BRB-04: 4π Dynamic Conformal Arc Therapy Dynamic Conformal Arc Therapy (DCAT) for SBRT. Med Phys 2016. [DOI: 10.1118/1.4958250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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114
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Hassan Rezaeian N, Chi Y, Zhou Y, Tian Z, Jiang S, Hannan R, Jia X. TH-CD-207A-12: Impacts of Inter- and Intra-Fractional Organ Motion for High-Risk Prostate Cancer Stereotactic Body Radiation Therapy. Med Phys 2016. [DOI: 10.1118/1.4958181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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115
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Tian Z, Shi F, Gu X, Graves Y, Tan J, Hassan-Rezaeian N, Jiang S, Jia X. MO-FG-202-08: Real-Time Monte Carlo-Based Treatment Dose Reconstruction and Monitoring for Radiotherapy. Med Phys 2016. [DOI: 10.1118/1.4957311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Rezaeian NH, Chi Y, Tian Z, Jiang S, Hannan R, Jia X. SU-G-BRA-12: Development of An Intra-Fractional Motion Tracking and Dose Reconstruction System for Adaptive Stereotactic Body Radiation Therapy in High-Risk Prostate Cancer. Med Phys 2016. [DOI: 10.1118/1.4956936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Yang D, Yang W, Tian Z, van Velkinburgh JC, Song J, Wu Y, Ni B. Innate lymphoid cells as novel regulators of obesity and its-associated metabolic dysfunction. Obes Rev 2016; 17:485-98. [PMID: 26948388 DOI: 10.1111/obr.12397] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/08/2016] [Accepted: 02/08/2016] [Indexed: 12/14/2022]
Abstract
The increased prevalence of obesity worldwide has been accompanied by increases in risk and rates of obesity-associated metabolic dysfunctions, such as insulin resistance. The chronic, low-grade inflammatory condition of obesity highlights the pathophysiological link between the immune system and the metabolic system, which has yet to be fully understood. Recent studies of obesity have started to uncover potential regulatory roles for the innate lymphoid cells (ILCs), which under normal conditions serve to regulate development of lymphoid tissue and function of the mucosal immune system. The ILCs are a newly identified immune cell population with complicated composition and subsequently diverse and dynamic functions. Studies to determine the distribution profile of the various ILCs in adipose tissue provide intriguing clues as to their regulatory capacity in obesity and its associated metabolic dysfunctions. Here, we review the recent findings supporting a role for ILCs as regulators of obesity or its associated insulin resistance, and discuss the potential underlying molecular mechanism as well as its promise as a therapeutic target for clinical applications. © 2016 World Obesity.
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Li Y, Tian Z, Song T, Jia X, Gu X, Jiang S. SU-F-T-428: An Optimization-Based Commissioning Tool for Finite Size Pencil Beam Dose Calculations. Med Phys 2016. [DOI: 10.1118/1.4956613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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119
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Tian Z, Li Y, Folkerts M, Jiang S, Jia X. TU-AB-BRC-11: Moving a GPU-OpenCL-Based Monte Carlo (MC) Dose Engine Towards Routine Clinical Use: Automatic Beam Commissioning and Efficient Source Sampling. Med Phys 2016. [DOI: 10.1118/1.4957405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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120
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Ma XB, Tian Z, Wang YP, Aidaeraili S, Wang Y, Duan XM. [Different epidermal growth factor receptor gene mutations in a patient with multiple synchronous adenocarcinomas of lung:report of a case]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2016; 45:266-267. [PMID: 27033394 DOI: 10.3760/cma.j.issn.0529-5807.2016.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Cao YL, Guo GN, Zhu GY, Tian Z, Gou YJ, Chen C, Liu MH. Bioinformatics-based design of novel antigenic B-cell linear epitopes of Deinagkistrodon acutus venom. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2016; 20:781-787. [PMID: 26957285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE With the help of bioinformatics analysis, we wished to develop a novel antivenom against the Deinagkistrodon (D.) acutus snake venom using B-cell linear epitopes of three primary toxins (serine protease, metalloprotease, and phospholipase A2). MATERIALS AND METHODS cDNA sequences of three toxins of D. acutus venom were retrieved from the NCBI database. B-cell linear epitopes were predicted using DNAStar and the website server software provided by IEDB. Then, the sequences of the predicted epitopes were artificially synthesized and inserted into the vector pET-32a-c(+). Recombinant antigen peptide was expressed and purified. BALB/c mice were immunized with the recombinant antigen peptide. The immunoprotective effect of this novel antivenom was measured by neutralization of venom haemorrhagic activity. RESULTS Six epitopes were obtained by bioinformatics analysis. ELISA analysis showed that antibody titre was >8,000 against snake venom and >64,000 against the recombinant peptide. Neutralization assays confirmed that the developed antivenom could effectively reduce the haemorrhagic activity of snake venom. CONCLUSIONS Six B-cell linear epitopes of D. acutus snake venom were predicted by bioinformatics analysis and successfully utilized to produce a novel antivenom.
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Chen JT, Younusi A, Cao L, Tian Z, Zhou YJ, Song XH. Potential role of heat-shock proteins in giant cell tumors. GENETICS AND MOLECULAR RESEARCH 2015; 14:19144-54. [PMID: 26782567 DOI: 10.4238/2015.december.29.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated the differential expression protein profile of giant cell tumors (GCTs), which can be used to monitor the tumor's recurrence and metastasis, to provide preliminary results for further study. We also explored heat-shock protein (HSP) inhibitor that prevents tumors from recurring and migrating. A stable isotope-labeling strategy using isobaric tags for relative and absolute quantitation coupled with two-dimensional liquid chromatography tandem mass spectrometry was used to separate and identify differentially expressed proteins. A total of 467 differentially expressed proteins were identified in GCT tissues. Up to 311 proteins were upregulated, whereas 156 proteins were downregulated in GCT tissues. Three of the differentially expressed HSPs, namely HP90A, HSPB1, and HSPB2, were upregulated. The differentially expressed proteins of GCT tissues will provide a scientific foundation for tumor prognosis, and for further studies exploring HSP inhibitor to prevent tumor recurrence and migration.
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Han J, Hu L, Zhang C, Yang X, Tian Z, Wang Y, Zhu L, Yang C, Sun J, Zhang C, Li J, Xu L. Juvenile ossifying fibroma of the jaw: a retrospective study of 15 cases. Int J Oral Maxillofac Surg 2015; 45:368-76. [PMID: 26740351 DOI: 10.1016/j.ijom.2015.12.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/16/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
The management of patients with juvenile ossifying fibroma (JOF) remains controversial. To explore the correlations between different treatments and the patient prognosis, 15 cases of JOF of the jaw were reviewed. Five patients were male and 10 were female. Patient age at the time of disease onset ranged from 7 to 18 years (mean 10.9 years). Nine tumours were located in mandible and six in the maxilla. These cases typically manifested clinically as painless swelling of the jaw (9/15, 60%); 40% (6/15) of the cases were associated with pain, diplopia, stuffy nose, and/or rapid growth. Images of JOF can show a radiolucent, mixed, or ground glass-like appearance. Pathological examinations revealed 10 cases of juvenile trabecular ossifying fibroma (JTOF) and five cases of juvenile psammomatoid ossifying fibroma (JPOF). In terms of the treatment plan, six patients initially received radical surgery; nine patients underwent conservative treatment, among whom six (6/9, 66.7%) had one or more recurrence. At the end of the follow-up period, 12 patients had no evidence of tumour recurrence and three cases were alive with a tumour. In summary, surgeons should develop the surgical plan according to the extent of the lesion, relapse status, growth rate, and family choice, and these patients should be followed up closely.
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Li QW, Zhou T, Wang F, Jiang M, Liu CB, Zhang KR, Zhou Q, Tian Z, Hu KW. MicroRNA-215 functions as a tumor suppressor and directly targets ZEB2 in human pancreatic cancer. GENETICS AND MOLECULAR RESEARCH 2015; 14:16133-45. [PMID: 26662405 DOI: 10.4238/2015.december.8.2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
It has been shown that microRNA-215 (miR-215) is dysregulated in several human malignancies, and this correlates with tumor progression. However, its expression and function in pancreatic cancer is still unclear. The aim of this study was to explore the effects of miR-215 on pancreatic cancer formation and progression. Using quantitative RT-PCR, we detected miR-215 expression in pancreatic cancer cell lines and primary tumor tissues. The association of miR-215 expression with clinicopathological factors and prognosis was also analyzed. We then observed the effects of miR-215 on the biological behavior of pancreatic cancer cells. Lastly, the potential regulatory function of miR-215 on ZEB2 expression was investigated. miR-215 expression levels were significantly downregulated in pancreatic cancer samples and cell lines. Decreased miR-215 expression was significantly associated with large tumor size, advanced TNM stage, lymph node metastasis, vessel invasion, and lower overall survival. Multivariate regression analysis corroborated that downregulation of miR-215 was an independent unfavorable prognostic factor. Overexpression of miR-215 inhibited pancreatic cancer cell proliferation, invasion, and migration; promoted cell apoptosis in vitro; and suppressed tumorigenicity in vivo. Further, ZEB2 was confirmed as a direct target of miR-215 by using a luciferase reporter assay. These findings indicate that miR-215 may act as a tumor suppressor in pancreatic cancer cells, and could serve as a novel therapeutic target for miR-based therapy.
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Brock M, Roghmann F, Sonntag C, Sommerer F, Tian Z, Löppenberg B, Palisaar RJ, Noldus J, Hanske J, von Bodman C. Fusion of Magnetic Resonance Imaging and Real-Time Elastography to Visualize Prostate Cancer: A Prospective Analysis using Whole Mount Sections after Radical Prostatectomy. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2015; 36:355-361. [PMID: 24854132 DOI: 10.1055/s-0034-1366563] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE To determine whether the fusion of multiparametric magnetic resonance imaging (MRI) with transrectal real-time elastography (RTE) improves the visualization of PCa lesions compared to MRI alone. MATERIALS AND METHODS In a prospective setting, 45 patients with biopsy-proven PCa received prostate MRI prior to radical prostatectomy (RP). T2 and diffusion-weighted imaging (T2WI/DW-MRI) and, if applicable, dynamic contrast-enhanced sequences (T2WI/DW/DCE-MRI) were used to perform MRI/RTE fusion. The probability of PCa on MRI was graded according to the PI-RADS score for 12 different prostate sectors per patient. MRI images were fused with RTE to stratify suspicious from non-suspicious sectors. Imaging results were compared to whole mount sections using nonparametrical receiver operating characteristic curves and the area under these curves (AUC). RESULTS 41 of 45 patients were eligible for final analyses. Histopathology confirmed PCa in 261 (53%) of 492 prostate sectors. MRI alone provided an AUC of 0.62 (T2WI/DW-MRI) and 0.65 (T2WI/DW/DCE-MRI) to predict PCa and was meaningfully enhanced to 0.75 (T2WI/DW-MRI) and 0.74 (T2WI/DW/DCE-MRI) using MRI/RTE fusion. Sole MRI showed a sensitivity and specificity of 57.9% and 61% with the best results for ventral prostate sectors whereas RTE was superior in dorsal and apical sectors. MRI/RTE fusion improved sensitivity and specificity to 65.9% and 75.3%, respectively. Additional use of DCE sequences showed a sensitivity and specificity of 65% and 55.7% for MRI and 72.1% and 66% for MRI/RTE fusion. CONCLUSION MRI/RTE fusion provides improved PCa visualization by combining the strength of both imaging techniques in regard to prostate zonal anatomy and thereby might improve future biopsy-guided PCa detection.
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