"NV15-31071A"
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Závěrečná zpráva o řešení grantu Agentury pro zdravotnický výzkum MZ ČR
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Uroteliální karcinom močového měchýře (UKMM) představuje nejčastější nádorové onemocnění močového traktu. Celosvětově zaujímá čtvrté místo mezi mužskými a deváté místo mezi ženskými malignitami a vyznačuje se vysokou frekvencí recidiv primárního tumoru pozorované až u 70 % pacientů. Současné diagnostické metody (cystoskopie s cytologií moče, vylučovací urografie) jsou diskomfortní, časově a finančně náročné a v případě cystoskopie invazivní. V případech, kdy je ložisko karcinomu příliš malé, nebo jedná-li se o carcinoma in situ (CIS) však cystoskopie neumožní dosažení definitivní diagnózy. Charakteristické změny v expresi miRNA již byly pozorovány v nádorové tkáni, ale také moči pacientů s UKMM. Domníváme se, že analýzou miRNA v nádorové tkáni budeme schopni predikovat riziko progrese povrchového UKMM do invazivní formy. Domníváme se rovněž, že implementace močových miRNA do diagnostického algoritmu pacientů s UKMM navýší citlivost konvenční cytologie při zachování její specificity, a umožní časnou detekci rekurence či progrese povrchového UKMM.; Urothelial carcinoma of the urinary bladder (UCUB) is the most common cancer of the urinary tract. It is the 4th most common cancer in men and the 9th most common in women worldwide characterized by the high rates of recurrence. Current diagnostic methods (cystoscopy with cytology of urine, excretory urography) are discomfort, time-consuming and expensive and in the case of cystoscopy also invasive. In cases where the cancer lesion is too small, or in the case of carcinoma in situ (CIS) does cystoscopy not lead to achieve a definite diagnosis. Characteristic changes in the expression of miRNAs were found not only in tumor tissue but also in the urine of patients with UCUB. We hypothesize that by determining the miRNAs in tumor tissue, we will be able to predict risk of progression of superficial to muscle-invasive UCUB. We also hypothesize that the implementation of urinary miRNAs in the diagnostic algorithm of UCUB patients will increase the sensitivity of conventional cytology while maintaining specificity, enable early detection of recurrence and progression of superficial UCUB.
- MeSH
- časná detekce nádoru MeSH
- diagnostické techniky urologické MeSH
- karcinom z přechodných buněk diagnóza MeSH
- mikro RNA MeSH
- nádorové biomarkery MeSH
- nádory močového měchýře diagnóza MeSH
- staging nádorů MeSH
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- onkologie
- urologie
- biochemie
- NLK Publikační typ
- závěrečné zprávy o řešení grantu AZV MZ ČR
OBJECTIVES: Non-muscle-invasive bladder cancer (NMIBC) is a heterogeneous disease characterized by a high primary tumor recurrence rate. Current prognostic systems used for predicting recurrence in individual patients have limitations and do not consider the biological background of this tumor type. Our study aimed to find microRNAs (miRNAs) associated with NMIBC recurrence. METHODS: Seventy-eight NMIBC patients were prospectively enrolled and divided into exploratory and validation cohorts. Out of these patients, 32 developed recurrence within 18 months after surgery, while 46 did not show any sign of recurrence after 30 months. Expression profiles of 2,578 miRNAs were obtained using Affymetrix miRNA microarrays and candidate miRNAs validated using the individual quantitative reverse-transcription polymerase chain reaction (qRT-PCR). RESULTS: The expression profiling revealed a set of 137 miRNAs differentially expressed between NMIBC patients with and without recurrence (P < 0.05). In the validation phase, miR-34a-3p had a significantly higher expression in tumors of NMIBC patients without recurrence (P = 0.0155). Decreased expression of miR-34a-3p was associated with significantly shorter recurrence-free survival (P = 0.009). Cox regression analysis confirmed that miR-34a-3p is an independent biomarker associated with a lower risk of recurrence (hazard ratio (HR) = 0.3184, 95% confidence interval = 0.003-0.681, P = 0.0258). Combination of miR-34a-3p and European Organization for Research and Treatment of Cancer risk score into one predictive model enabled to predict individual risk of recurrence with high statistical significance and analytical performance (P < 0.0001; area under curve = 0.8368; sensitivity 83%, and specificity 75%). CONCLUSIONS: Our data suggest that miR-34a-3p is an independent biomarker of NMIBC recurrence and a promising candidate for further independent validations as an additional factor to improve predictive value of European Organization for Research and Treatment of Cancer nomogram.
- MeSH
- cystektomie metody MeSH
- cystoskopie metody MeSH
- Kaplanův-Meierův odhad MeSH
- lidé středního věku MeSH
- lidé MeSH
- lokální recidiva nádoru diagnóza genetika prevence a kontrola MeSH
- mikro RNA metabolismus MeSH
- močový měchýř patologie chirurgie MeSH
- nádorové biomarkery metabolismus MeSH
- nádory močového měchýře genetika mortalita chirurgie MeSH
- nomogramy * MeSH
- prediktivní hodnota testů MeSH
- přežití bez známek nemoci MeSH
- prognóza MeSH
- prospektivní studie MeSH
- regulace genové exprese u nádorů MeSH
- sekvenční analýza hybridizací s uspořádaným souborem oligonukleotidů MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- stanovení celkové genové exprese MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- validační studie MeSH
Východiska: V současnosti nejsou klinicky využitelné tumorové markery založené na analýze moči, které by byly dostatečně citlivé a specifické, aby nahradily cystoskopii v detekci karcinomu močového měchýře (bladder cancer – BCA). Jednou z možností jsou močové mikroRNA (miRNA) představující novou skupinu biomarkerů pro časnou a neinvazivní diagnostiku urologických malignit. Soubor pacientů a metody: Do studie bylo zařazeno 155 pacientů s BCA a 83 zdravých kontrol. Expresní profily močových miRNA byly identifikovány za použití Affymetrix miRNA microarrays. Kandidátní miRNA byly dále validovány na nezávislé kohortě pacientů pomocí specifických TaqMan assays metodou kvantitativní real-time polymerázové řetězové reakce. Výsledky: Globální profilování genové exprese odhalilo panel miRNA, které byly významně rozdílně exprimovány u pacientů s BCA ve srovnání se zdravými kontrolami (p < 0,01). V rámci validační fáze byla u tří miRNA potvrzena významně vyšší koncentrace v moči pacientů s BCA v porovnání s kontrolními skupinami (p < 0,0001). Závěr: Identifikovali jsme miRNA, jejichž hladina je významně zvýšena v moči pacientů s BCA. Naše data ukazují, že močové miRNA mohou sloužit jako senzitivní a specifické biomarkery pro časnou a neinvazivní detekci BCA.
Background: Currently, there are no urinary-based tumour markers with sufficient sensitivity and specificity to replace cystoscopy in the detection of bladder cancer (BCA). Urinary microRNAs are emerging as clinically useful class of biomarkers for early and non-invasive detection of urologic malignancies. Patients and Methods: In this study, 155 patients with BCA and 83 healthy controls were enrolled. Expression profiles of urinary miRNAs were obtained using Affymetrix miRNA microarrays and candidate miRNAs further validated in independent cohort using specific TaqMan assays and quantitative real-time polymerase chain reaction method. Results: Whole-genome profiling identified miRNA signature with significantly different concentrations in urine of BCA compared to controls (p < 0.01). In the independent validation phase of the study, three miRNAs were confirmed to have significantly higher levels in urine of patients with BCA in comparison with control groups (p < 0.0001). In addition, we observed significant decrease in two miRNAs (p < 0.01) concentrations in the urinary samples collected 3 months after surgery compared to pre-operative samples. Conclusion: We identified and validated miRNAs to have significantly higher concentrations in urine of patients with BCA in comparison with controls. Our data have shown that urinary miRNAs could serve as sensitive and specific biomarkers enabling non-invasive detection of BCA.
- MeSH
- kohortové studie MeSH
- kvantitativní polymerázová řetězová reakce MeSH
- lidé MeSH
- mikro RNA * moč MeSH
- nádorové biomarkery * genetika moč MeSH
- nádory močového měchýře * diagnóza genetika moč MeSH
- regulace genové exprese u nádorů MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
Urinary microRNAs (miRNAs) are emerging as clinically useful tool for early and non-invasive detection of various types of cancer including bladder cancer (BCA). In this study, 205 patients with BCA and 99 healthy controls were prospectively enrolled. Expression profiles of urinary miRNAs were obtained using Affymetrix miRNA microarrays (2578 miRNAs) and candidate miRNAs further validated in independent cohorts using qRT-PCR. Whole-genome profiling identified 76 miRNAs with significantly different concentrations in urine of BCA compared to controls (P < 0.01). In the training and independent validation phase of the study, miR-31-5p, miR-93-5p and miR-191-5p were confirmed to have significantly higher levels in urine of patients with BCA in comparison with controls (P < 0.01). We further established 2-miRNA-based urinary DxScore (miR-93-5p, miR-31-5p) enabling sensitive BCA detection with AUC being 0.84 and 0.81 in the training and validation phase, respectively. Moreover, DxScore significantly differed in the various histopathological subgroups of BCA and decreased post-operatively. In conclusion, we identified and independently validated cell-free urinary miRNAs as promising biomarkers enabling non-invasive detection of BCA.
- MeSH
- celogenomová asociační studie MeSH
- dospělí MeSH
- genom lidský MeSH
- karcinom diagnóza genetika patologie moč MeSH
- lidé středního věku MeSH
- lidé MeSH
- mikro RNA genetika moč MeSH
- nádorové biomarkery genetika moč MeSH
- nádory močového měchýře diagnóza genetika patologie moč MeSH
- prospektivní studie MeSH
- regulace genové exprese u nádorů * MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- studie případů a kontrol MeSH
- stupeň nádoru MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
INTRODUCTION: Urinary microRNAs (miRNAs) are emerging as a clinically useful tool for early and non-invasive detection of various types of cancer. The aim of this study was to evaluate whether let-7 family miRNAs differ in their urinary concentrations between renal cell carcinoma (RCC) cases and healthy controls. MATERIALS AND METHODS: In the case-control study, 69 non-metastatic clear-cell RCC patients and 36 gender/age-matched healthy controls were prospectively enrolled. Total RNA was purified from cell-free supernatant of the 105 first morning urine specimens. Let-7 family miRNAs were determined in cell-free supernatant using quantitative miRNA real-time reverse-transcription PCR and absolute quantification approach. RESULTS: Concentrations of all let-7 miRNAs (let-7a, let-7b, let-7c, let-7d, let-7e and let-7g) were significantly higher in urine samples obtained from RCC patients compared to healthy controls (P < 0.001; P < 0.001; P = 0.005; P = 0.006; P = 0.015 and P = 0.002, respectively). Subsequent ROC analysis has shown that let-7a concentration possesses good ability to differentiate between cases and controls with area under curve being 0.8307 (sensitivity 71%, specificity 81%). CONCLUSIONS: We have shown that let-7 miRNAs are abundant in the urine samples of patients with clear-cell RCC, and out of six let-7 family members, let-7a outperforms the others and presents promising non-invasive biomarker for the detection of RCC.
- MeSH
- dospělí MeSH
- karcinom z renálních buněk diagnóza genetika moč MeSH
- lidé středního věku MeSH
- lidé MeSH
- mikro RNA genetika moč MeSH
- nádorové biomarkery genetika MeSH
- nádory ledvin diagnóza genetika moč MeSH
- polymerázová řetězová reakce s reverzní transkripcí MeSH
- regulace genové exprese u nádorů * MeSH
- ROC křivka MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Long non-coding RNA TUG1 is involved in the development and progression of a variety of tumors. Little is known about TUG1 function in high-grade muscle-invasive bladder cancer (MIBC). The aims of our study were to determine expression levels of long non-coding RNA TUG1 in tumor tissue, to evaluate its relationship with clinico-pathological features of high-grade MIBC, and to describe its function in MIBC cells in vitro. TUG1 expression levels were determined in paired tumor and adjacent non-tumor bladder tissues of 47 patients with high-grade MIBC using real-time PCR. Cell line T-24 and siRNA silencing were used to study the TUG1 function in vitro. We observed significantly increased levels of TUG1 in tumor tissue in comparison to adjacent non-tumor bladder tissue (P < 0.0001). TUG1 levels were significantly increased in metastatic tumors (P = 0.0147) and were associated with shorter overall survival of MIBC patients (P = 0.0241). TUG1 silencing in vitro led to 34 % decrease in cancer cell proliferation (P = 0.0004) and 23 % reduction in migration capacity of cancer cells (P < 0.0001). We did not observe any significant effects of TUG1 silencing on cell cycle distribution and number of apoptotic cells. Our study confirmed overexpression of TUG1 in MIBC tumor tissue and described its association with worse overall survival in high-grade MIBC patients. Together with in vitro observations, these data suggest an oncogenic role of TUG1 and its potential usage as biomarker or therapeutic target in MIBC.
- MeSH
- apoptóza MeSH
- buněčný cyklus MeSH
- invazivní růst nádoru MeSH
- kvantitativní polymerázová řetězová reakce MeSH
- lidé MeSH
- malá interferující RNA genetika MeSH
- messenger RNA genetika MeSH
- nádorové biomarkery genetika MeSH
- nádorové buňky kultivované MeSH
- nádory močového měchýře genetika patologie MeSH
- nádory svalů genetika patologie MeSH
- pohyb buněk * MeSH
- polymerázová řetězová reakce s reverzní transkripcí MeSH
- prognóza MeSH
- progrese nemoci MeSH
- proliferace buněk * MeSH
- regulace genové exprese u nádorů * MeSH
- RNA dlouhá nekódující antagonisté a inhibitory genetika MeSH
- staging nádorů MeSH
- Check Tag
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: Renal cell carcinoma (RCC) is the most common neoplasm of adult kidney accounting for about 3% of adult malignancies. P-Element induced wimpy testis (PIWI)-interacting RNAs (piRNAs) are a new class of naturally occurring, short non-coding RNAs involved in silencing of transposable elements and in sequence-specific chromatin modifications. There were preliminary data published indicating that piR-823 expression is deregulated in circulating tumor cells and tumor tissue in gastric and kidney cancer, respectively. PATIENTS AND METHODS: In our study, we analyzed piR-823 levels in 588 biological specimens: tumor tissue (N=153), adjacent renal parenchyma (N=121), blood serum (N=178) and urine (N=20) of patients undergoing nephrectomy for RCC; and in blood serum (N=101) and urine (N=15) of matched healthy controls. Expression levels of piR-823 were determined in all biological specimens by quantitative real-time polymerase chain reaction, compared in patients and controls, and correlated with clinicopathological features of RCC. RESULTS: We identified a significant down-regulation of piR-823 in tumor tissue [p<0.0001, area under the curve (AUC)=0.7945]. On the contrary in blood serum and urine, the expression of piR-823 was significantly higher in patients with RCC compared to healthy individuals (p=0.0005, AUC=0.6264 and p=0.0157, AUC=0.7433, respectively). We further observed higher levels of piR-823 in tumor tissue to be associated with shorter disease-free survival of patients (p=0.0186) and a trend for higher piR-823 levels in serum to be associated with advanced clinical stages of RCC (p=0.0691). There were no other significant associations of piR-823 levels in any type of biological specimen with clinicopathological features of RCC. CONCLUSION: piR-823 is down-regulated in tumor tissue, but positively correlated with worse outcome, indicating its complex role in RCC pathogenesis. In blood serum, piR-823 is up-regulated, but with unsatisfactory analytical performance. Preliminary data indicate the promising diagnostic utility of urinary piR-823 in patients with RCC.
- MeSH
- dospělí MeSH
- karcinom z renálních buněk krev genetika moč MeSH
- lidé středního věku MeSH
- lidé MeSH
- malá interferující RNA krev metabolismus moč MeSH
- mladý dospělý MeSH
- nádorové biomarkery krev genetika moč MeSH
- nádory ledvin krev genetika moč MeSH
- plocha pod křivkou MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladý dospělý MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- Publikační typ
- časopisecké články MeSH