The clinical significance of circulating miR-21, miR-142, miR-143, and miR-146a in patients with prostate cancer

BackgroundProstate cancer (PCa) is the most common type of solid tissue cancer among men in western countries. In this study, we determined the levels of circulating miR-21, miR-142, miR-143, miR-146a, and RNU 44 levels as controls for early diagnosis of PCa.MethodsThe circulating miRNA levels in peripheral blood samples from 43 localized PCa patients, 12 metastatic PCa (MET) patients, and a control group of, 42 benign prostate hyperplasia (BPH) patients with a total of 97 volunteers were determined the by PCR method.ResultsNo differences in the DCT values were found among the groups. In PCa and PCaMet groups the expression of miR21 and miR142 were higher compared to the BHP group. No other differences were observed among the other groups. miR21 expression in the PCa group was 6.29 folds upregulated whereas in the PCaMet group 10.84 folds up-regulated. When the total expression of miR142 is evaluated, it showed a positive correlation with mir21 and mir 146 (both p<0.001). Also, the expression of miR146 shows a positive correlation with both miR21 and miR143 (both p<0.001). Expression of miRNAs was found to be an independent diagnostic factor in patients with Gleason score, PSA, and free PSA levels.ConclusionsOur study showed that co-expression of miR21, miR-142, miR-143, and miR-146a and the upregulation of miR-21 resulted in increased prostate carcinoma cell growth. In the PCaMet group, miR21 is the most upregulated of all miRNAs. These markers may provide a novel diagnostic tool to help diagnose PCa with aggressive behavior.     

MARVELD1调控内含子miR-186、miR-335表达的研究

目的:前期研究发现,MARVELD1(具有囊泡运输和膜连接功能的MAL及相关蛋白1)在多种肿瘤细胞中表达下调,许多micro RNAs也随其发生变化。本研究探讨了MARVELD1调控mi R-186和mi R-335的表达方式。方法:本研究选取了多种肺癌细胞系,运用q RT-PCR的方法检测了MARVELD1以及mi R-186和mi R-335的表达情况,通过MARVELD1过表达体系和si RNA干扰MARVELD1表达的体系分析mi R-186和mi R-335表达变化情况,运用生物信息学网站对mi R-186和mi R-335进行分析,确认其是否为内含子mi RNA,并进一步应用MARVELD1过表达和RNAi体系检测MARVELD1对mi R-186和mi R-335的宿主基因的影响。结果:在肺癌细胞中,MARVELD1与mi R-186、mi R-335的表达呈现明显的正相关。在过表达MARVELD1之后,mi R-186、mi R-335出现高表达;当下调MARVELD1表达时,mi R-186、mi R-335则表现低表达。生物信息学分析发现mi R-186和mi R-335均为内含子mi RNA。进一步分析MARVELD1与mi R-186和mi R-335宿主基因的表达关系显示,MARVELD1可以上调它们的宿主基因的表达。结论:上述结果表明,MARVELD1可通过影响内含子mi R-186和mi R-335的宿主基因进而调控二者的表达,为进一步研究MARVELD1影响肿瘤细胞的发生机制奠定了基础。     

Plasma microRNA profiling highlights miR-1260b and miR-720 as novel diagnostic and prognostic biomarkers of esophageal squamous cell carcinoma

This paper was designed to explore the value of miRNAs as diagnostic biomarkers that may facilitate the early detection of esophageal squamous cell carcinoma (ESCC). Plasma miRNA profiles were defined via an array-based approach using samples from ESCC patients and healthy controls (n=5 each). Differentially expressed miRNAs in these samples were validated via qPCR in ESCC patients (n=96) and healthy controls (n=51), and the relationship between ESCC patient plasma miR-1260b and miR-720 levels and clinicopathological characteristics were additionally examined. In total, 12 plasma miRNAs that were differentially expressed between ESCC patients and healthy controls were identified via miRNA. Six of these miRNAs were subsequently validated, revealing that both miR-1260b and miR-720 were significantly differentially abundant in ESCC patients and controls, with miR-1260b being significantly upregulated in ESCC patients relative to controls (2.24, 1.41 respectively, P<0.001), while the opposite was observed with respect to miR-720 (0.66, 2.27 respectively, P=0.001). The use of both miR-720 and miR-1260b as a combined diagnostic tool was highly efficacious, yielding an AUC of 0.814, a sensitivity of 86.3%, and a specificity of 73.2% as a means of detecting ESCC patients. Elevated plasma miR-1260b level was also associated with a poorer patient prognosis when compared to patients with a low plasma miRNA level (P=0.021). This study has successfully developed a plasma miRNA biomarker signature of ESCC that may offer value as a diagnostic or prognostic tool when evaluating patients with ESCC.     

Circulating miR-3613-5p but not miR-125b-5p,miR-199a-3p,and miR-451a are biomarkers of endometriosis

ObjectiveThis study aimed to assess the utility of circulating miR-125b-5p, miR-199a-3p, miR-451a, and miR-3613-5p as biomarkers of endometriosis.Study designPatients with stage III or IV of endometriosis according to the revised American Society of Reproductive Medicine (rASRM) staging classification, as well as control women, were recruited. We created a prospective study conducted on a group of 48 patients (n = 25 controls, n = 24 endometriosis) who had laparoscopic surgery. Blood samples were taken and plasma miRNA levels were measured by quantitative real-time polymerase chain reaction (RT-qPCR) and assessed with AUC and ROC curves.ResultsMiR-451a and miR-3613-5p were significantly decreased in the plasma of endometriosis patients. miR-451a had a receiver-operating characteristic (ROC) area under the curve 0.8283 and miR-3613-5p had a ROC area under the curve 0.7617. The concentration of circulating miR-125b-5p and miR-199-3p did not differ between endometriosis patients and controls. Plasma miRNA levels did not change with BMI, smoking status, fertility problems, or menstrual pain according to the VAS scale (p > 0.05).ConclusionCirculating miR-451a and miR-3613-5p levels significantly differed between endometriosis and controls. However, the levels of miR-451a were discordant with previous studies. Therefore, miR-3613-5p may have better potential as the endometriosis biomarker. Circulating miR-125b-5p and miR-199a-3p cannot be used as reliable markers of endometriosis.     

脑胶质瘤组织miR-211、miR-374、miR-510表达水平与临床病理特征及预后的关系研究

摘要 目的：探讨脑胶质瘤组织微小RNA（miR）-211、miR-374、miR-510表达水平与临床病理特征及预后的关系。方法：选择2013年8月至2015年8月我院诊治的83例脑胶质瘤患者作为研究对象,选择同期由于脑外伤在我院行内减压术切除的正常脑组织样本31份作为对照样本。采用荧光定量PCR检测miR-211、miR-374、miR-510表达水平,生存分析采用Kaplan-Meier法,应用Cox比例风险回归模型分析预后的影响因素。结果：与正常脑组织相比,脑胶质瘤组织中miR-211、miR-374表达水平明显下降,miR-510表达水平明显升高（P<0.05）。脑胶质瘤组织miR-211、miR-374、miR-510表达均与WHO分级和卡氏功能状态量表(KPS)评分有关（P<0.05）。miR-211、miR-374低表达患者的5年总生存率明显低于高表达患者,miR-510低表达患者的5年总生存率明显高于高表达患者（P<0.05）。WHO分级、KPS评分、miR-211、miR-374和miR-510表达是脑胶质瘤患者预后的影响因素（P<0.05）。结论：脑胶质瘤组织中miR-211和miR-374表达下调,而miR-510表达上调,miR-211、miR-374和miR-510表达均与WHO分级、KPS评分和预后相关,检测miR-211、miR-374和miR-51在脑胶质瘤患者的诊断和治疗中具有一定临床意义。     

miR-30a和miR-30b靶向GW182的生物学功能研究

目的：通过证明miR-30a、miR-30b靶向GW182,探索HeLa细胞中miR-30a、miR-30b及GW182的生物学功能。方法：生物信息学预测分析表明GW182的3＇UTR区存在4个保守的miR-30a、miR-30b靶位点,将含有靶位点的序列片段构建到萤光素酶报告载体中,检测miR-30a、miR-30b与靶位点的结合情况;用阳离子脂质体转染GW182 siRNA和miR-30a、miR-30b mimics,检测GW182下游功能的变化。结果：miR-30a、miR-30b能够靶向GW182;qPCR及Western印迹证明miR-30a、miR-30b可以在mRNA与蛋白水平上降低GW182的表达,同时影响GW182所参与的miRNA/siRNA对靶基因的抑制作用。结论：GW182是miR-30a、miR-30b的靶基因,揭示了miR-30a、miR-30b通过靶向GW182影响miRNA/siRNA作用途径的新功能。     

Dysregulation of exosomal miR-192 and miR-194 expression in lung adenocarcinoma patients

Non-small cell lung cancer (NSCLC) is the main reason of cancer linked mortality and around 80% of cases diagnosed in advanced stage. Therefore current study designed to evaluate the deregulation of miRNA-194 and miRNA-192 in different body fluid of Non small cell lung cancer participants. Present study recruited newly diagnosed histopathologically confirmed. It was observed that the 40% NSCLC participants showed elevated miR-194 expression and 60% NSCLC participants showed reduced miR-194 expression in serum sample while in Bronchial wash, only 20% NSCLC participants showed elevated miR-194 expression while 80% showed reduced miR-194 expression (p = 0.003). It was found that the 54% NSCLC participants showed elevated miR-192 expression and 55% NSCLC participants showed reduced miR-192 expression in serum sample while In Bronchial wash sample, only 25% NSCLC participants showed high miR-192 expression while 75% showed low miR-192 expression (P = 0.0004). Expression of miR-194 was significantly associated with TNM stages (p < 0.0001, p < 0.0001), distant organ metastases (p < 0.0001, p < 0.0001), pathological grade (p = 0.0009, p = 0.0005) among serum sample and bronchial wash sample. Same observation was found with expression of miR-192 and it was significantly associated with TNM stages (p < 0.0001, p < 0.0001), distant organ metastases (p < 0.0001, p < 0.0001), pathological grade (p = 0.006, p = 0.001) among serum sample and bronchial wash sample. It was observed that the NSCLC participants who had high serum based miR-194 expression showed 22 months of overall median survival while low expression of serum based miR-194 expression showed 18 months of overall median survival. Present study suggests that decreased expression of miR-194 and miR-192 was significantly associated with different clinical features of NSCLC cases. However, significantly higher number of NSCLC cases showed low expression of miR-194 and miR-192 in bronchial lavage sample. Decreased poor overall survival was found to be associated with bronchial wash sample with respect to low miR-194 and miR-192 expression while NSCLC participants showed better overall survival with high miR-194 and miR-192 expression. This suggested decreased expression of miR-192 and miR-194 expression could be the potential prognostic marker among NSCLC participants.     

LINC00467 promotes cell proliferation and stemness in lung adenocarcinoma by sponging miR-4779 and miR-7978

Lung adenocarcinoma (LAD), as one of the most common types of lung tumors, is lethal and malignant. Long noncoding RNAs (lncRNAs) play important roles in various cancers according to many previous studies. LINC00467 was proposed to be a tumor promoter. Despite the validated promotive effect of LINC00467 on neuroblastoma progression, its regulatory mechanism in LAD remains unclear. In this study, LINC00467 expressed higher in LAD tissues and cell lines, and increased LINC00467 indicated a poor prognosis. Knockdown of LINC00467 inhibited cell proliferation, the expressions of tumor stem cell-related genes, and cell spheroid formation ability, while it promoted cell apoptosis. miR-4779 and miR-7978 were reported to play antitumor roles in several cancers before. LINC00467 could combine with miR-4779 and miR-7978, and negatively regulated miR-4779 and miR-7978. miR-4779 and miR-7978 inhibitor could partly rescue the LINC00467 knockdown-induced influence on cell proliferation, apoptosis, and stemness. In a word, this study innovatively investigated the mechanism of LINC00467 in LAD and verified LINC00467 exerted its carcinogenesis function by sponging miR-4779 and miR-7978, which may become a catalyst for generating new therapeutic targets for LAD treatment.     

骨髓基质干细胞诱导分化为神经元过程中miR-124和miR-128的表达

目的探讨骨髓基质干细胞诱导分化为神经元过程中miR-124和miR-128的表达变化及作用。方法采用全骨髓培养法体外分离培养获得骨髓基质干细胞,取传代培养至第3代的骨髓基质干细胞,在神经干细胞培养液及细胞因子等条件下诱导其分化为神经元,倒置显微镜下观察其形态变化,应用ABI公司的TaqManMicroRNAAssaysreal-timePCR技术,检测miR-124和miR-128在诱导分化过程中的表达。结果 miR-124分化后神经元的表达是未分化BMSCs的0.051倍(P0.05);miR-128分化后神经元的表达是未分化BMSCs的0.070倍(P0.05)。结论 miR-124和miR-128在骨髓基质干细胞诱导分化为神经元过程中可能起重要作用。     

miR-15a 和miR-16-1 模拟物对人骨肉瘤细胞系SOSP-9607 凋亡 和增殖的影响

目的:探讨miR-15a和miR-16-1模拟物对于人骨肉瘤细胞系SOSP-9607凋亡和增殖的影响。方法:将SOSP-9607细胞分为实验组和对照组。实验组分为miR-15a组、miR-16-1组、miR-15a+miR-16-1组。以miR-15a组为例,采用miR-15a模拟物(hsa-miR-15a mimics)上调SOSP-9607细胞内的miR-15a表达量。对照组分为阴性对照组和空白对照组。采用流式细胞仪测定细胞凋亡率,四甲基偶氮唑蓝(MTT)法测定细胞增殖,并计算细胞增殖效率。结果:通过统计学分析,实验组凋亡率与阴性对照组凋亡率相比明显增高(P<0.05);实验组的细胞增殖率明显低于对照组(P<0.05)。结论:上调SOSP-9607细胞内miR-15a和miR-16-1的表达量可促进SOSP-9607细胞的凋亡并抑制其增殖。     

Identification of serum miR-378 and miR-575 as diagnostic indicators and predicting surgical prognosis in human epilepsy

BackgroundEpilepsy (EP) is a common neurological disorder which is characterized by excessive abnormal synchronization of neuronal discharges in the brain due to chronic recurrent seizures of multiple etiologies. Variety of microRNAs have been associated with the occurrence and development of EP. This study aimed to determine the aberrant expression of miR-378 and miR-575 in EP patients to validate their potential to distinguish EP from healthy patients.MethodsRT-qPCR was used to determine the expressions of miR-378 and miR-575 from serum specimens of 106 EP and 103 control individuals. Clinical indicators between EP patients and controls were assessed. Based on surgical outcome, EP patients were further divided into Engel I-IV EP. The potentials of miR-378 and miR-575 in discriminating EP from healthy participants and predicting surgical prognosis were calculated by receiver operating characteristic (ROC) analysis.ResultsWe found the miR-378 and miR-575 were significantly declined (P<0.001) in Engel I-II and III-IV EP patients with no difference in clinical parameters compared. Moreover, miR-378 and miR-575 displayed high sensitivity, specificity, and accuracy in distinguishing EP patients and predicting surgical outcomes. Moreover, after surgical treatment, miR-378 and miR-575 levels were increased compared with those at admission, suggesting their potentials in treatment response.ConclusionsmiR-378 and miR-575 could be utilized as novel and non-invasive serum biomarkers in discriminating EP from healthy controls and predicting surgical outcome, shedding new insights on epileptogenesis and EP treatment.     

The clinical diagnostic value of plasma miR-592 and miR-217-3p levels in retinoblastoma

BackgroundThis study was designed to investigate the abnormal expression of plasma miR-592 and miR-217-3p in retinoblastoma (Rb) and explore the clinical diagnostic value of their expression levels for Rb.MethodsThe 100 Rb patients who came to Nanchang Hongdu Hospital of Traditional Chinese Medicine from January 2018 to January 2019 were selected as the Rb group, and 100 healthy patients who came to the physical examination centre during the same period were selected as the control group. Real-time fluorescence quantitative PCR (qRT-PCR) was used to detect the expression levels of plasma miR-592 and miR-217-3p in all subjects; analyse the relationship between plasma miR-592 and miR-217-3p levels and the clinicopathological characteristics of Rb. Pearson correlation analysis evaluated the relationship between plasma miR-592 and miR-217-3p levels and overall survival.ResultsPlasma levels of miR-592 and miR-217-3p in the Rb group were significantly higher than those in the control group (p<0.0001), and the expression of miR-592 was significantly correlated with family genetic history (p 0.0001), tumour bias (p=0.0081), lymph node metastasis (p=0.0048) and pathological grade (p=0.0025), and the expression of miR-217-3p was significantly related to family genetic history (p 0.0001), optic nerve infiltration (p 0.0001), lymph node metastasis (p=0.0090), and pathological grade (p 0.0001). The high expression of miR-592 and miR-217-3p presents a more serious pathological manifestation of Rb, and the overall survival of patients is significantly shortened with the increase of miR-592 (r=-0.2276, p=0.0052) and miR-217-3p levels (r=-0.6461, p 0.0001).Conclusionsand miR-217-3p are highly expressed in the plasma of Rb patients, and their elevated levels present severe pathological manifestations of Rb and shortened overall survival, which is expected to become biomarkers for clinical diagnosis of Rb.     

Suppressive effect of exogenous miR-16 and miR-34a on tumorigenesis of breast cancer cells

Recent investigations have shown tumor-suppressive roles for miR-16 and miR-34a. They also share some features in regard to targeting cancer cell signaling pathways which they control. Therefore, in this study, we aimed to further scrutinize whether exogenous induction of mature miR-34a and miR-16 can collaborate in breast tumor suppression. MDA-MB-231 and SK-BR-3 human breast cancer cell lines were cultured and transfected twice with hsa-miR-16-5p and hsa-miR-34a-5p mimics individually or in combination. The cells were analyzed for apoptosis rate and cell cycle indices by flow cytometry. Also, the expression of several invasion and the epithelial-mesenchymal transition markers was evaluated at gene and protein levels by quantitative real-time polymerase chain reaction and western blot analysis, respectively. Assessment of invasiveness and migratory potential of the transfected cells was performed using three-dimensional spheroid formation and wound-healing assay, respectively. In both cell lines, miR-16 and miR-34a induced apoptosis and cell-cycle arrest and also suppressed invasion and migration. Some of these effects, like cell-cycle arrest and induction of apoptosis, were significantly higher when using both microRNAs than when using them individually for transfection of the cells. Our results are indicating that miR-16 and miR-34a can collaborate in breast tumor suppression.     

胃癌组织miR-203、miR-4317的表达及临床意义

目的:探讨胃癌组织中微小核糖核酸(miR)-203、miR-4317的表达情况及其临床意义.方法:选择2014年1月至2016年12月我院收治的胃癌患者92例,应用实时定量荧光PCR(qRT-PCR)检测患者胃癌组织及其相应癌旁组织中miR-203、miR-4317的表达情况,分析miR-203、miR-4317表达与...     

食道癌组织miR-21、miR-182表达与临床病理特征及预后的关系

目的:探讨食道癌组织微小RNA-21(miR-21)、微小RNA-182(miR-182)表达与临床病理特征及预后的关系。方法:选取2011年4月到2013年7月期间在我院接受手术治疗的食道癌患者84例,取患者的癌组织和癌旁正常组织作为检验标本,比较癌组织和癌旁正常组织中miR-21、mi R-182的表达水平,并分析食道癌组织中mi R-182、mi R-21的表达与临床病理特征及预后的关系。结果:癌组织中mi R-21、mi R-182的相对表达量明显高于癌旁正常组织,差异有统计学意义(P<0.05)。食道癌组织中mi R-21的表达与淋巴结转移、临床分期有关(P<0.05),与性别、年龄、分化程度、肿瘤大小无关(P>0.05);食道癌患者癌组织中miR-182的表达与年龄、性别、肿瘤大小无关(P>0.05),与分化程度、临床分期、淋巴结转移有关(P<0.05)。食道癌癌组织中miR-21、miR-182高表达患者的中位生存时间均低于低表达患者,差异有统计学意义(P<0.05)。结论:食道癌组织mi R-21、mi R-182表达与患者的部分临床病理特征及预后有关,两者有望成为食道癌新的治疗靶点。     

非小细胞肺癌组织中miR-19b与miR-20a的表达及临床意义

目的:检测mi R-19b与mi R-20a在非小细胞肺癌(NSCLC)组织中的表达,探讨两者与肺癌临床病理的关系。方法:选择我院NSCLC肺癌患者50例,使用Real-time RT-PCR法对其癌组织及癌旁正常组织中mi R-19b和mi R-20a的含量进行检测,并利用2(-△△CT)法处理结果,分析与临床病理资料的关系。结果:相对于内参U6,mi R-19b基因在NSCLC组织中的表达量明显低于癌旁正常组织,而mi R-20a基因在NSCLC组织中的表达量明显高于癌旁正常组织,差异具有统计学意义(P0.05);在NSCLC组织标本中,mi R-19b基因表达量在临床分期I-II的标本中明显高于临床分期III,而mi R-20a基因表达量在临床分期I-II的标本中明显低于临床分期III,差异均就有统计学意义(P0.05);mi R-19b基因表达量在肿瘤病理低分化组织中明显低于肿瘤病理高分化组织,而mi R-20a基因表达量在肿瘤病理低分化组织中明显高于肿瘤病理高分化组织,差异均具有统计学意义(均P0.05)。结论:mi R-19b低表达和mi R-20a高表达与NSCLC的临床分期、病理分级具有密切关系,早期检测有助于NSCLC诊断和治疗。     

Promising renoprotective effect of gold nanoparticles and dapagliflozin in diabetic nephropathy via targeting miR-192 and miR-21

Diabetic nephropathy (DN) is a worldwide issue that eventually leads to end-stage renal failure, with limited therapeutic options. Prior research has revealed that gold nanoparticles (AuNPs) have a substantial antidiabetic impact. In addition, sodium-glucose cotransporter2 (SGLT2) inhibitors, including dapagliflozin (DAPA), had renoprotective impact on DN. Therefore, this research attempted to determine the potential AuNPs and DAPA impacts in ameliorating experimentally DN induction and the underlying mechanisms focusing on miR-192 and miR-21, correlating them with autophagy, apoptosis, fibrosis, and oxidative stress. Diabetes induction was through a single intraperitoneal streptozotocin (55 mg/kg) injection, and rats with diabetes received AuNPs (2.5 mg/kg/day) as well as DAPA (2 mg/kg/day) for 7 weeks as a treatment. AuNPs and DAPA treatment for 7 weeks substantially alleviated DN. AuNPs and DAPA significantly increased catalase (CAT) activity as well as serum total antioxidant capacity (TAC), along with a substantial decline in malondialdehyde (MDA). AuNPs and DAPA treatment alleviated renal fibrosis as they decreased transforming growth factorß1(TGF-ß1) as well as matrix metalloproteinase-2 (MMP-2) renal expression, decreased apoptosis through alleviating the proapoptotic gene (caspase-3) renal expression and increased the antiapoptotic gene (Bcl-2) renal expression, and increased autophagy as they increased LC-3 as well as Beclin-1 renal expression. Autophagy activation, inhibition of apoptosis, and renal fibrosis could be due to their inhibitory impact on miR-192 and miR-21 renal expression. AuNPs and DAPA have a protective effect on DN in rats by targeting miR-192 and miR-21 and their downstream pathways, including fibrosis, apoptosis, autophagy, and oxidative stress.     

miR-15a-5p和miR-16-5p在骨肉瘤组织中的表达分析

目的:使用microRNAs基因芯片及实时定量PCR法测定骨肉瘤组织中miR-15a-5p和miR-16-5p的相对表达含量,并与瘤旁组织对比,分析骨肉瘤细胞内miR-15a-5p和miR-16-5p的表达变化。方法:选取34例骨肉瘤组织蜡块样本,使用microRNAs基因芯片观察miR-15a-5p和miR-16-5p在骨肉瘤和瘤旁组织内的表达差异;实时定量PCR法测定骨肉瘤组织和瘤旁组织中miR-15a-5p和miR-16-5p的相对表达含量,并将两种结果对比分析。结果:microRNAs基因芯片结果显示,在骨肉瘤组织中,miR-15a-5p在肿瘤中的表达较瘤旁组织低1.79倍,miR-16-5p较瘤旁组织低1.62倍。实时定量PCR实验结果表明,miR-15a-5p和miR-16-5p表达较瘤旁组织降低,差异有统计学意义(P0.05)。经过统计学计算,miR-15a-5p在肿瘤中的表达较瘤旁组织低3.14倍,miR-16-5p较瘤旁组织低5.65倍。结论:在骨肉瘤中,miR-15a-5p和miR-16-5p表达含量降低,提示这两种microRNAs在骨肉瘤中可能做为抑癌因子存在。     

Preliminary validation of ERBB2 expression regulated by miR-548d-3p and miR-559

ERBB2 overexpression occurs in numerous types of primary human tumors and alterations in microRNA (miRNA) expression have been associated with tumor suppression or tumorigenesis in human cancer, nevertheless, little is known about natural miRNAs acting on ERBB2. In this study, bioinformatical analysis of the 3′-UTRs of ERBB2 revealed the target elements for miR-548d-3p and miR-559. Moreover, a predicted miRNA/mRNA interaction experimental validation showed that both miR-548d-3p and miR-559 can interact specifically with the 3′-UTR of the ERBB2 mRNA. And miR-548d-3p plus miR-559 transfection showed a cooperative regulation of translationally repressing ERBB2 mRNA rather than by either miR-548d-3p or miR-559 alone. These results not only support the idea that different miRNAs can simultaneously and cooperatively repress a given target mRNA but also preliminarily validate the role of miR-548d-3p and miR-559 in regulating the ERBB2 expression. These data provide molecular basis for the application of miRNAs in ERBB2-targeted therapy.