AIM:To study the potential value and specificity of plasma miR-216a as a marker for pancreatic injury.METHODS:Two rat models were applied in this article:L-arginine-induced acute pancreatitis was used as one model to ...AIM:To study the potential value and specificity of plasma miR-216a as a marker for pancreatic injury.METHODS:Two rat models were applied in this article:L-arginine-induced acute pancreatitis was used as one model to explore the potential value of plasma miR-216a for detection of pancreatic injury;nonlethal sepsis induced in rats by single puncture cecal ligation and puncture(CLP)was used as the other model to evaluate the specificity of plasma miR-216a compared with twocommonly used markers(amylase and lipase)for acute pancreatitis.Plasmas were sampled from rats at indicated time points and total RNA was isolated.Real-Time Quantitative reverse transcriptase-polymerase chain reaction was used to quantify miR-216a in plasmas.RESULTS:In the acute pancreatitis model,among five time points at which plasmas were sampled,miR-216a concentrations were significantly elevated 24 h after arginine administration and remained significantly increased until 48 h after operation(compared with 0 h time point,P<0.01,Kruskal-Wallis Test).In the CLP model,plasma amylase and lipase,two commonly used biomarkers for acute pancreatitis,were significantly elevated 24 h after operation(compared with 0 h time point,P<0.01 and 0.05 respectively,Pairwise Bonferroni corrected ttests),while miR-216a remained undetectable among four tested time points.CONCLUSION:Our article showed for the first time that plasma miR-216a might serve as a candidate marker of pancreatic injury with novel specificity.展开更多
目的:探讨多发性骨髓瘤(MM)患者血清miR-424及miR-765的表达及其临床意义。方法:选取2017年1月-2020年7月三亚中心医院收治的81例MM患者,依据国际分期系统分为Ⅰ期(n=16)、Ⅱ期(n=25)和Ⅲ期(n=40);根据免疫分型结果分为IgG型(n=46)、IgA...目的:探讨多发性骨髓瘤(MM)患者血清miR-424及miR-765的表达及其临床意义。方法:选取2017年1月-2020年7月三亚中心医院收治的81例MM患者,依据国际分期系统分为Ⅰ期(n=16)、Ⅱ期(n=25)和Ⅲ期(n=40);根据免疫分型结果分为IgG型(n=46)、IgA型(n=19)、轻链型(n=10)和非分泌型(n=6)。另选取同期50例健康体检正常者作为对照组。检测各组血清miR-424、miR-765及胱抑素C(Cys-C)水平。应用受试者工作特征(ROC)曲线分析血清miR-424、miR-765及Cys-C水平诊断MM的价值。采用Pearson相关分析MM患者血清miR-424、miR-765水平与Cys-C的相关性。结果:MM组血清miR-424(2.74±1.30 vs 0.85±0.26)、miR-765(2.05±0.82 vs 0.63±0.17)及Cys-C[(2.18±0.86 vs 0.72±0.15)mg/L]水平均明显高于对照组(P<0.001)。MMⅢ期患者血清miR-424(5.08±2.36 vs 1.12±0.34,2.24±0.93)、miR-765(3.50±1.52 vs 0.74±0.20,1.78±0.65)及Cys-C[(3.81±1.30 vs 0.92±0.24,1.68±0.55) mg/L]水平均明显高于Ⅰ期和Ⅱ期(P<0.001),且Ⅱ期患者血清miR-424、miR-765及Cys-C水平均明显高于Ⅰ期(P<0.001)。MM IgG型患者血清miR-424及miR-765水平均明显高于IgA、轻链和非分泌型(P<0.001)。ROC曲线分析结果显示,miR-424、miR-765、Cys-C及3项联合诊断MM的曲线下面积以后者为最大(0.952,95%CI:0.890-0.993),其敏感度和特异度为95.0%和87.2%。相关分析结果显示,MM患者血清miR-424及miR-765水平与Cys-C均呈正相关(r=0.795,r=0.760)。结论:MM患者血清miR-424及miR-765水平明显升高,且随着MM病情分期呈增高趋势,联合Cys-C检测对MM诊断具有较高的价值。展开更多
Objective： To examine plasma microRNA-21 （miR-21） level in patients with non-small cell lung cancer （NSCLC） and its potential correlation with chemotherapeutic response. Methods： 77 NSCLC patients and 36 age and...Objective： To examine plasma microRNA-21 （miR-21） level in patients with non-small cell lung cancer （NSCLC） and its potential correlation with chemotherapeutic response. Methods： 77 NSCLC patients and 36 age and sex-matched healthy controls were included. Plasma miR-21 concentration was examined using a quantitative real-time reverse transcription polymerase chain reaction assay （qRT-PCR）. Potential correlation between plasma mir-21 concentrations with chemotherapeutic responses was analyzed in 35 patients with advanced NSCLC （stages IIIB and IV）. Results： Plasma miR-21 was significantly higher in NSCLC patients relative to the healthy controls （P0.0001）. As a biomarker, plasma mir-21 had a receiver operating characteristic （ROC） curve area of 0.729 with 61.04% sensitivity and 83.33% specificity. Chemotherapeutic response in the 35 patients with advanced NSCLC （stages IIIB and IV） included partial response （PR） （n=11）, stable disease and progression disease （SD＋PD） （n=24）. The overall response rate （CR＋PR） was 31.4%. Plasma miR-21 in patients who achieved PR was significantly lower than those who did not respond （SD＋PD） （P=0.0487）, and comparable to that of the healthy controls （P=0.2744）. Conclusion： Plasma miR-21 is a good biomarker for NSCLC, and could be used to predict responses to chemotherapy.展开更多
Objective To investigate the relationship between plasma miR-93-5p and the risk of esophageal cancer, as well as the influence of miR-93-5p on the biological function of esophageal cancer cells,exerted through exosome...Objective To investigate the relationship between plasma miR-93-5p and the risk of esophageal cancer, as well as the influence of miR-93-5p on the biological function of esophageal cancer cells,exerted through exosomes.Methods The expression of plasma miR-93-5p in esophageal cancer patients and healthy controls was analysed by real-time quantitative PCR. The influence of miR-93-5p on the risk and prognosis of esophageal carcinoma was analyzed by conditional logistic regression and survival analysis. The effect of miR-93-5p on the biological function of recipient cells was investigated by establishing an in vitro donor cell co-culture model. The target gene of miR-93-5p was validated by luciferase reporter assay and Western Blotting.Results Upregulation of plasma miR-93-5p expression significantly increases the risk of esophageal cancer and is associated with poor prognosis. miR-93-5p transferred by exosomes promotes the proliferation of recipient esophageal cancer cells and affects the expression of PTEN and its downstream proteins p21 and cyclin D1.Conclusion Our study provides a reference for the identification of biomarkers for the diagnosis and prognosis of esophageal cancer.展开更多
This study was performed to investigate a potential marker for the presence of spermatozoa in the ejaculate following varicocelectomy in Chinese men with nonobstructive azoospermia and varicoceles. The micro-RNA （miR...This study was performed to investigate a potential marker for the presence of spermatozoa in the ejaculate following varicocelectomy in Chinese men with nonobstructive azoospermia and varicoceles. The micro-RNA （miR）-192a levels in seminal plasma and testicular tissue were evaluated by quantitative real-time polymerase chain reaction from 60 men with nonobstructive azoospermia and varicoceles （Group A： 27 men with spermatozoa found in the ejaculate after surgery; Group B： 33 men without spermatozoa found in the ejaculate after surgery） and 30 controls. The seminal plasma and testicular tissue miR-192a levels were higher in Group B than in Group A and the controls （P〈 0.001）, and there was no significant difference between Group A and the controls （P〉 0.05）. Apoptosis and proliferation assays with miR mimics and inhibitors showed that miR-192a induced GC-2 cell apoptosis through the activation of Caspase-3 protein. Thus, seminal plasma miR-192a appears to be a potential marker for successfully indicating spermatozoa in the ejaculate following microsurgical varicocelectomy in men with nonobstructive azoospermia and varicoceles. Seminal plasma miR-192a may be a useful clinical marker for prescreening to determine which patients with nonobstructive azoospermia and varicoceles would benefit from varicocelectomy.展开更多
Esophageal squamous cell carcinoma （ESCC） is one of the most common and deadly cancers in the world, Currently, clinical therapy of ESCC remains limited and the five-year survival rate is poor. The function of miR-4...Esophageal squamous cell carcinoma （ESCC） is one of the most common and deadly cancers in the world, Currently, clinical therapy of ESCC remains limited and the five-year survival rate is poor. The function of miR-425 has been reported in multiple human cancers. However. the tumorigenic role and clinical significance of miR-425 in ESCC remains unclear. We found that enhanced expression of miR- 425 in ESCC cell lines not only promoted cell proliferation and colony formation, but also increased cellular metastasis. Furthermore, we revealed the mechanism that miR-425 inhibited the expression of SMAD2 by targeting the second binding site in the 3＇-untranslated region （3＇-UTR） in ESCC. This mode of action influenced not only SMAD2 rnRNA expression but also protein expression. In addition, we detected the expression of miR-425 in ESCC tissues and plasma. Moreover, we analyzed the relationship between miR-425 expression and SMAD2 mRNA expression. We found that miR-425 was overexpressed in ESCC tissues and the plasma relative to adjacent normal tissues and plasma of healthy individuals. Furthermore, there was a negative correlation between miR-425 expression and SMAD2, Taken together, our results show that miR-425 functions as an oncogene by targeting the 3＇-UTR of SMAD2 and indicate the potential utility of plasma miR-425 as a novel biomarker for ESCC diagnosis.展开更多
Although progress in clinical and basic research has significantly increased our understanding of breast cancer, little is known about the molecular mechanism underlying breast cancer metastasis. Identification of eff...Although progress in clinical and basic research has significantly increased our understanding of breast cancer, little is known about the molecular mechanism underlying breast cancer metastasis. Identification of effective therapeutic targets to prevent breast cancer metastasis is urgently needed. The function of mi R-503-3p has been investigated in other cancers, but its role in breast cancer remains undefined.Here, we found that mi R-503-3p was overexpressed in breast cancer tissue and plasma compared with adjacent normal breast tissue and with plasma from healthy individuals. Moreover, we identified mi R-503-3p to be an oncogene of breast cancer cell proliferation, migration and invasion. Upregulation of mi R-503-3p in breast cancer cells inhibited expression of epithelialemesenchymal transition（EMT）-related protein SMAD2 and the epithelial marker protein E-cadherin by directly binding to their m RNA30 untranslated region, whereas increased expression of mesenchymal marker proteins, including vimentin and N-cadherin. Taken together, our findings support a critical role for mi R-503-3p in induction of breast cancer EMT and suggest that plasma mi R-503-3p may be a useful diagnostic biomarker for breast cancer.展开更多
基金Supported by National Nature Science Foundation of China,No.30971344Innovative Fund for PhD granted by the Second Military Medical University
文摘AIM:To study the potential value and specificity of plasma miR-216a as a marker for pancreatic injury.METHODS:Two rat models were applied in this article:L-arginine-induced acute pancreatitis was used as one model to explore the potential value of plasma miR-216a for detection of pancreatic injury;nonlethal sepsis induced in rats by single puncture cecal ligation and puncture(CLP)was used as the other model to evaluate the specificity of plasma miR-216a compared with twocommonly used markers(amylase and lipase)for acute pancreatitis.Plasmas were sampled from rats at indicated time points and total RNA was isolated.Real-Time Quantitative reverse transcriptase-polymerase chain reaction was used to quantify miR-216a in plasmas.RESULTS:In the acute pancreatitis model,among five time points at which plasmas were sampled,miR-216a concentrations were significantly elevated 24 h after arginine administration and remained significantly increased until 48 h after operation(compared with 0 h time point,P<0.01,Kruskal-Wallis Test).In the CLP model,plasma amylase and lipase,two commonly used biomarkers for acute pancreatitis,were significantly elevated 24 h after operation(compared with 0 h time point,P<0.01 and 0.05 respectively,Pairwise Bonferroni corrected ttests),while miR-216a remained undetectable among four tested time points.CONCLUSION:Our article showed for the first time that plasma miR-216a might serve as a candidate marker of pancreatic injury with novel specificity.
文摘目的:探讨多发性骨髓瘤(MM)患者血清miR-424及miR-765的表达及其临床意义。方法:选取2017年1月-2020年7月三亚中心医院收治的81例MM患者,依据国际分期系统分为Ⅰ期(n=16)、Ⅱ期(n=25)和Ⅲ期(n=40);根据免疫分型结果分为IgG型(n=46)、IgA型(n=19)、轻链型(n=10)和非分泌型(n=6)。另选取同期50例健康体检正常者作为对照组。检测各组血清miR-424、miR-765及胱抑素C(Cys-C)水平。应用受试者工作特征(ROC)曲线分析血清miR-424、miR-765及Cys-C水平诊断MM的价值。采用Pearson相关分析MM患者血清miR-424、miR-765水平与Cys-C的相关性。结果:MM组血清miR-424(2.74±1.30 vs 0.85±0.26)、miR-765(2.05±0.82 vs 0.63±0.17)及Cys-C[(2.18±0.86 vs 0.72±0.15)mg/L]水平均明显高于对照组(P<0.001)。MMⅢ期患者血清miR-424(5.08±2.36 vs 1.12±0.34,2.24±0.93)、miR-765(3.50±1.52 vs 0.74±0.20,1.78±0.65)及Cys-C[(3.81±1.30 vs 0.92±0.24,1.68±0.55) mg/L]水平均明显高于Ⅰ期和Ⅱ期(P<0.001),且Ⅱ期患者血清miR-424、miR-765及Cys-C水平均明显高于Ⅰ期(P<0.001)。MM IgG型患者血清miR-424及miR-765水平均明显高于IgA、轻链和非分泌型(P<0.001)。ROC曲线分析结果显示,miR-424、miR-765、Cys-C及3项联合诊断MM的曲线下面积以后者为最大(0.952,95%CI:0.890-0.993),其敏感度和特异度为95.0%和87.2%。相关分析结果显示,MM患者血清miR-424及miR-765水平与Cys-C均呈正相关(r=0.795,r=0.760)。结论:MM患者血清miR-424及miR-765水平明显升高,且随着MM病情分期呈增高趋势,联合Cys-C检测对MM诊断具有较高的价值。
基金supported by the grants from the National Natural Science foundation of China (No. 30772549)the Development Foundation of Medical Science from Public Health Department of Jiangsu Province (No. P200965)
文摘Objective： To examine plasma microRNA-21 （miR-21） level in patients with non-small cell lung cancer （NSCLC） and its potential correlation with chemotherapeutic response. Methods： 77 NSCLC patients and 36 age and sex-matched healthy controls were included. Plasma miR-21 concentration was examined using a quantitative real-time reverse transcription polymerase chain reaction assay （qRT-PCR）. Potential correlation between plasma mir-21 concentrations with chemotherapeutic responses was analyzed in 35 patients with advanced NSCLC （stages IIIB and IV）. Results： Plasma miR-21 was significantly higher in NSCLC patients relative to the healthy controls （P0.0001）. As a biomarker, plasma mir-21 had a receiver operating characteristic （ROC） curve area of 0.729 with 61.04% sensitivity and 83.33% specificity. Chemotherapeutic response in the 35 patients with advanced NSCLC （stages IIIB and IV） included partial response （PR） （n=11）, stable disease and progression disease （SD＋PD） （n=24）. The overall response rate （CR＋PR） was 31.4%. Plasma miR-21 in patients who achieved PR was significantly lower than those who did not respond （SD＋PD） （P=0.0487）, and comparable to that of the healthy controls （P=0.2744）. Conclusion： Plasma miR-21 is a good biomarker for NSCLC, and could be used to predict responses to chemotherapy.
基金supported by National Natural Science Foundation of China grants[81573108,81573191,and 81172747]New Century Excellent Talents in University from the Ministry of Education[NCET-13-0124]+1 种基金the Zhejiang Public Technology Application Research Project[2016C33218]the Graduate Research and Innovation Program of Colleges and Universities of Jiangsu Province[KYLX15_0174]
文摘Objective To investigate the relationship between plasma miR-93-5p and the risk of esophageal cancer, as well as the influence of miR-93-5p on the biological function of esophageal cancer cells,exerted through exosomes.Methods The expression of plasma miR-93-5p in esophageal cancer patients and healthy controls was analysed by real-time quantitative PCR. The influence of miR-93-5p on the risk and prognosis of esophageal carcinoma was analyzed by conditional logistic regression and survival analysis. The effect of miR-93-5p on the biological function of recipient cells was investigated by establishing an in vitro donor cell co-culture model. The target gene of miR-93-5p was validated by luciferase reporter assay and Western Blotting.Results Upregulation of plasma miR-93-5p expression significantly increases the risk of esophageal cancer and is associated with poor prognosis. miR-93-5p transferred by exosomes promotes the proliferation of recipient esophageal cancer cells and affects the expression of PTEN and its downstream proteins p21 and cyclin D1.Conclusion Our study provides a reference for the identification of biomarkers for the diagnosis and prognosis of esophageal cancer.
文摘This study was performed to investigate a potential marker for the presence of spermatozoa in the ejaculate following varicocelectomy in Chinese men with nonobstructive azoospermia and varicoceles. The micro-RNA （miR）-192a levels in seminal plasma and testicular tissue were evaluated by quantitative real-time polymerase chain reaction from 60 men with nonobstructive azoospermia and varicoceles （Group A： 27 men with spermatozoa found in the ejaculate after surgery; Group B： 33 men without spermatozoa found in the ejaculate after surgery） and 30 controls. The seminal plasma and testicular tissue miR-192a levels were higher in Group B than in Group A and the controls （P〈 0.001）, and there was no significant difference between Group A and the controls （P〉 0.05）. Apoptosis and proliferation assays with miR mimics and inhibitors showed that miR-192a induced GC-2 cell apoptosis through the activation of Caspase-3 protein. Thus, seminal plasma miR-192a appears to be a potential marker for successfully indicating spermatozoa in the ejaculate following microsurgical varicocelectomy in men with nonobstructive azoospermia and varicoceles. Seminal plasma miR-192a may be a useful clinical marker for prescreening to determine which patients with nonobstructive azoospermia and varicoceles would benefit from varicocelectomy.
基金supported by the funding from the National High Technology Research and Development Program of China (863 Program) (Nos. 2012AA02A206 and 2011AA02A110)the National Key Basic Research Program of China (973 Program) (Nos. 2011CB910801 and 2011CB911004)the National Key Special Program on Infection diseases (No. 2013ZX10002009)
文摘Esophageal squamous cell carcinoma （ESCC） is one of the most common and deadly cancers in the world, Currently, clinical therapy of ESCC remains limited and the five-year survival rate is poor. The function of miR-425 has been reported in multiple human cancers. However. the tumorigenic role and clinical significance of miR-425 in ESCC remains unclear. We found that enhanced expression of miR- 425 in ESCC cell lines not only promoted cell proliferation and colony formation, but also increased cellular metastasis. Furthermore, we revealed the mechanism that miR-425 inhibited the expression of SMAD2 by targeting the second binding site in the 3＇-untranslated region （3＇-UTR） in ESCC. This mode of action influenced not only SMAD2 rnRNA expression but also protein expression. In addition, we detected the expression of miR-425 in ESCC tissues and plasma. Moreover, we analyzed the relationship between miR-425 expression and SMAD2 mRNA expression. We found that miR-425 was overexpressed in ESCC tissues and the plasma relative to adjacent normal tissues and plasma of healthy individuals. Furthermore, there was a negative correlation between miR-425 expression and SMAD2, Taken together, our results show that miR-425 functions as an oncogene by targeting the 3＇-UTR of SMAD2 and indicate the potential utility of plasma miR-425 as a novel biomarker for ESCC diagnosis.
基金supported by funding from the National Key Basic Research Program of China(973 Program,No.2012CB967003)the National Natural Science Foundation of China(Nos.81472661,21335007,and 81402463)the National High Technology Research and Development Program of China(863 Program,No.2015AA020104)
文摘Although progress in clinical and basic research has significantly increased our understanding of breast cancer, little is known about the molecular mechanism underlying breast cancer metastasis. Identification of effective therapeutic targets to prevent breast cancer metastasis is urgently needed. The function of mi R-503-3p has been investigated in other cancers, but its role in breast cancer remains undefined.Here, we found that mi R-503-3p was overexpressed in breast cancer tissue and plasma compared with adjacent normal breast tissue and with plasma from healthy individuals. Moreover, we identified mi R-503-3p to be an oncogene of breast cancer cell proliferation, migration and invasion. Upregulation of mi R-503-3p in breast cancer cells inhibited expression of epithelialemesenchymal transition（EMT）-related protein SMAD2 and the epithelial marker protein E-cadherin by directly binding to their m RNA30 untranslated region, whereas increased expression of mesenchymal marker proteins, including vimentin and N-cadherin. Taken together, our findings support a critical role for mi R-503-3p in induction of breast cancer EMT and suggest that plasma mi R-503-3p may be a useful diagnostic biomarker for breast cancer.
