The miR-98 is thought to be associated with various cancers. This study was to evaluate the potential predictive value of miR-98 expression in formalin-fixed paraffin-embedded tissue of breast cancer patients. The expression levels of miR-98 were examined in 98 breast cancer patients and 40 cancer-free controls using real-time quantitative PCR. The comparison of miR-98 expression levels between patient and control was performed using the Mann-Whitney test. The miR-98 showed higher expression levels in breast cancer patients compared with cancer free controls (p<0.01). The expression levels of miR-98 were highly correlated with miR24/93/378 in breast cancer patients. The miR-98 exhibited great capability of discriminating between cancer patients and controls by the Receiver-operator characteristic (ROC) curve analysis. The miR-98 was found highly correlated with breast cancer by Univariable logistic regression analysis. These results suggest that over-expression of miR-98 in formalin-fixed paraffin-embedded tissues might serve as a valuable source for biomarker discovery in breast cancer patients.

MiR-93 is thought to be an onco-miRNA for its capabilities of enhancing tumor growth. The objective of this study was to evaluate the potential predictive value of miR-93 expression in formalin-fixed paraffin-embedded (FFPE) tissues of breast cancer patients. The expression of miR-93 was examined in 101 breast cancer patients and 40 controls using real-time quantitative PCR. We found that miR-93 was markedly upregulated in breast cancer patients compared with controls (p<0.01). The expression level of miR-93 was significantly correlated with miR-24/378 in breast cancer patients. MiR-93 exhibited great capability of discriminating between cancer patients and cancer-free controls by receiver-operator characteristic (ROC) curve analysis. MiR-93 showed 0.866 AUC (the area under the ROC curve) values. The MiR-93 level was found significantly correlated with breast cancer by univariable logistic regression. These results suggest that overexpression of miR-93 in FFPE tissues may serve as an indispensable source for biomarker discovery and validation in breast cancer patients.

髓系分化起始反应基因88(MYD88)位于染色体3p22,编码蛋白为Toll样受体(TLR)信号传导途径中的一个重要接头分子,结构上主要包括2个功能域:N端的死亡域(DD)和C端的Toll域(TIR),在天然免疫应答和炎症反应中发挥着重要的调控作用[1-2].最近的研究发现39%活化B细胞(ABC)型弥漫大B细胞淋巴瘤(DLBCL)患者中存在MYD88基因的获得性突变[3],其中位于TIR域的L265P突变发生率最高(29%).高分辨率熔解曲线分析(High resolution melting curve analysis,HRMA)是一种新型的突变分析技术,具有灵敏度高、特异性好、成本低廉、高通量检测的优点,已在临床上得到越来越多的应用[4].我们拟建立HRMA法对MYD88 L265P突变进行检测.

Objective: Recurrent L265P mutation of myeloid differentiation primary response gene 88 (MYD88) has been identified in a proportion of diffuse large B-cell lymphoma (DLBCL) and chronic lymphocytic leukemia. The present study aimed to establish a rapid, sensitive, and reliable method using high-resolution melting analysis (HRMA) to detect MYD88 L265P mutation in DLBCL.Designs and methods: The sensitivity of HRMA in the detection of MYD88 L265P mutation was evaluated. MYD88 L265P mutation was further screened in 120 patients with DLBCL The results of HRMA were validated by direct DNA sequencing.Results:. For the detection of MYD88 L265P mutation, the reproducible maximal sensitivity of HRMA was 5% higher than that obtained by direct DNA sequencing (25%). Heterozygous MYD88 L265P mutations were identified in 11(9.2%) DLBCL cases, all of which were diagnosed as non-germinal-center B cell (non-GCB) DLBCL.Conclusions: The HRMA assay is a rapid, sensitive, reliable, and high-throughput method to screen MYD88 L265P mutation and could be used in clinical diagnostic laboratories. 2012 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved.

Objective To investigate the composition and histogenesis of sclerosing hemangioma of the lung(SHL),in order to elevate the recognition of clinicopathological feathers of SHL.Method The clinicopathlogical and immunohistochemical feathers were reviewed in 15 cases of SHL.Results SHL has a characteristic architecture composed of round cell and surface cubic cell.It has a variety of tissular structure,mainly expression with four regions that contains solid regions,papillary regions,angiomatoid regions and sclerosing regions.The expression of round cells about EMA,TTF-1,vimentin is positive and the expression of round cells about NSE,SYN,ER,PR is positive partly.As far as EMA,TTF-1 and SP-B are concered,the expression of surface cubic cell is positive.Conclusion Both solid round cells and surface cubic cells are neoplastic.SHL is a tumor that probably originates from the epithelial cell of primary respiratory tract.