0000000001064545
AUTHOR
Carmen Jerónimo
MicroRNA-30a-5pme: a novel diagnostic and prognostic biomarker for clear cell renal cell carcinoma in tissue and urine samples
Abstract Background The rising incidence of renal cell carcinomas (RCC) constitutes a significant challenge owing to risk of overtreatment. Because aberrant microRNA (miR) promoter methylation contributes to cancer development, we investigated whether altered miR-30a-5p expression associates with DNA promoter methylation and evaluated the usefulness as clear cell RCC (ccRCC) diagnostic and prognostic markers. Methods Genome-wide methylome and RNA sequencing data from a set of ccRCC and normal tissue samples from The Cancer Genome Atlas (TCGA) database were integrated to identify candidate CpG loci involved in cancer onset. MiR-30a-5p expression and promoter methylation were quantitatively a…
Circulating miR-30b-5p levels in plasma as a novel potential biomarker for early detection of breast cancer
Background Recently, microRNAs have been demonstrated to be potential non-invasive biomarkers for diagnosis, prognosis assessment or prediction of response to treatment in cancer. In this study, we evaluate the potential of miR-30b-5p as a biomarker for early diagnosis of breast cancer (BC) in tissue and plasma. Methods Expression of miR-30b-5p was determined in a series of 112 BC and 40 normal breast tissues. Circulating miR-30b-5p levels in plasma samples were determined in a discovery cohort of 38 BC patients and 40 healthy donors and in a validation cohort of 83 BC patients and 83 healthy volunteers. miR-30b-5p expression was measured by quantitative real-time PCR and receiver operating…
Identification of a Two-MicroRNA Signature in Plasma as a Novel Biomarker for Very Early Diagnosis of Breast Cancer
Simple Summary Breast cancer diagnosis at the initial stage of the disease considerably improves prognosis and survival rates. This retrospective study aimed to develop and validate a plasma microRNA signature as a non-invasive biomarker for early-stage breast cancer diagnosis. We confirmed in a testing cohort of 54 BC patients and 89 healthy volunteers the value of a signature based on miR-30b and miR-99a levels in plasma samples for stage I breast cancer detection. Furthermore, our results were blindly validated in a second cohort of 74 breast cancer and 74 healthy samples. The proposed microRNA signature presented high value as a fast, cost-effective, and non-invasive biomarker for early…
Positioning Europe for the EPITRANSCRIPTOMICS challenge
WOS: 000444092300018 PubMed ID: 29671387 The genetic alphabet consists of the four letters: C, A, G, and T in DNA and C,A,G, and U in RNA. Triplets of these four letters jointly encode 20 different amino acids out of which proteins of all organisms are built. This system is universal and is found in all kingdoms of life. However, bases in DNA and RNA can be chemically modified. In DNA, around 10 different modifications are known, and those have been studied intensively over the past 20years. Scientific studies on DNA modifications and proteins that recognize them gave rise to the large field of epigenetic and epigenomic research. The outcome of this intense research field is the discovery t…
miR-503-5p induces doxorubicin resistance in triple-negative breast cancer.
1083 Background: Triple-negative breast cancer (TNBC) is an aggressive breast cancer (BC) subtype comprising approximately 15% of BC. Conventional cytotoxic chemotherapies continue to be the mainstay for treatment of this BC, which lacks targetable markers. In this context, microRNAs have been described to have an important role. The aim of this work was to elucidate the function of miR-503-5p in doxorubicin resistance in TNBC. Methods: miR-503-5p expression was evaluated in the TNBC cell line with acquired resistance to doxorubicin (MDA-MB-231R) and its parental cell line (MDA-MB-231), by qRT-PCR. Studies of gain/loss of function of miR-503-5p were carried out in MDA-MB-231 and MDA-MB-231…
Additional file 4 of MicroRNA-30a-5pme: a novel diagnostic and prognostic biomarker for clear cell renal cell carcinoma in tissue and urine samples
Additional file 4 Supplementary Table 1. Univariable and multivariable analysis of clinicopathological and epigenetic variables in TCGA Cohort (OS and RFS). Supplementary Table 2. List of primers’ sequence for qMSP analysis. Supplementary Table 3. qMSP primers’ design within the methylated gene’s sequence. Supplementary Table 4. Cox univariable and multivariable analysis of clinicopathological and epigenetic variables in Cohort #1 (DFS). Supplementary Table 5. Cox univariable analysis of clinicopathological and epigenetic variables in Cohort #1 (DSS). Supplementary Table 6. Cox univariable and multivariable analysis of clinicopathological and epigenetic variables in Cohort #2 (MFS). Supplem…
Circulating miR-99a-5p Expression in Plasma: A Potential Biomarker for Early Diagnosis of Breast Cancer
MicroRNAs have emerged as new diagnostic and therapeutic biomarkers for breast cancer. Herein, we analysed miR-99a-5p expression levels in primary tumours and plasma of breast cancer patients to evaluate its usefulness as a minimally invasive diagnostic biomarker. MiR-99a-5p expression levels were determined by quantitative real-time PCR in three independent cohorts of patients: (I) Discovery cohort: breast cancer tissues (n = 103) and healthy breast tissues (n = 26)
Additional file 2 of MicroRNA-30a-5pme: a novel diagnostic and prognostic biomarker for clear cell renal cell carcinoma in tissue and urine samples
Additional file 2 Supplementary Figure S2. Prognostic value of stage and nuclear grade in Cohort #1. (A) Disease-free and (B) disease-specific Kaplan-Meier survival curves based on clinicopathological stage and nuclear grade (Log-rank test).
Additional file 1 of MicroRNA-30a-5pme: a novel diagnostic and prognostic biomarker for clear cell renal cell carcinoma in tissue and urine samples
Additional file 1 Supplementary Figure S1. Expression of miR-30a-5p according to clinicopathological variables in Cohort #1. Scatter plots of miR-30a-5p expression levels according to metastasis presentation, recurrence and Führman grade (Mann–Whitney U test).
Additional file 3 of MicroRNA-30a-5pme: a novel diagnostic and prognostic biomarker for clear cell renal cell carcinoma in tissue and urine samples
Additional file 3 Supplementary Figure S3. MiR-30a-5pme levels and prognostic value of stage and nuclear grade in Cohort #2 (A) Scatter plots of miR-30a-5pme levels according to pathological stage (Mann–Whitney U test); (B) Disease-specific and (C) Metastasis-free Kaplan-Meier survival curves based on clinicopathological stage and nuclear grade (Log-rank test).