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Záveský L, Jandáková E, Weinberger V, Minář L, Kohoutová M, Slanař O. Long non-coding RNAs PTENP1, GNG12-AS1, MAGI2-AS3 and MEG3 as tumor suppressors in breast cancer and their associations with clinicopathological parameters. Cancer Biomark 2024; 40:61-78. [PMID: 38277283 PMCID: PMC11191509 DOI: 10.3233/cbm-230259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 12/26/2023] [Indexed: 01/28/2024]
Abstract
BACKGROUND Breast cancer is the most commonly occurring cancer worldwide and is the main cause of death from cancer in women. Novel biomarkers are highly warranted for this disease. OBJECTIVE Evaluation of novel long non-coding RNAs biomarkers for breast cancer. METHODS The study comprised the analysis of the expression of 71 candidate lncRNAs via screening, six of which (four underexpressed, two overexpressed) were validated and analyzed by qPCR in tumor tissues associated with NST breast carcinomas, compared with the benign samples and with respect to their clinicopathological characteristics. RESULTS The results indicated the tumor suppressor roles of PTENP1, GNG12-AS1, MEG3 and MAGI2-AS3. Low levels of both PTENP1 and GNG12-AS1 were associated with worsened progression-free and overall survival rates. The reduced expression of GNG12-AS1 was linked to the advanced stage. A higher grade was associated with the lower expression of PTENP1, GNG12-AS1 and MAGI2-AS3. Reduced levels of both MEG3 and PTENP1 were linked to Ki-67 positivity. The NRSN2-AS1 and UCA1 lncRNAs were overexpressed; higher levels of UCA1 were associated with multifocality. CONCLUSIONS The results suggest that the investigated lncRNAs may play important roles in breast cancer and comprise a potential factor that should be further evaluated in clinical studies.
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Affiliation(s)
- Luděk Záveský
- First Faculty of Medicine, Institute of Biology and Medical Genetics, Charles University, Prague, Czech Republic
- General University Hospital, Prague, Czech Republic
- First Faculty of Medicine, Institute of Pharmacology, Charles University, Prague, Czech Republic
| | - Eva Jandáková
- Department of Pathology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
- University Hospital Brno, Brno, Czech Republic
| | - Vít Weinberger
- University Hospital Brno, Brno, Czech Republic
- Department of Obstetrics and Gynecology, Masaryk University, Brno, Czech Republic
| | - Luboš Minář
- University Hospital Brno, Brno, Czech Republic
- Department of Obstetrics and Gynecology, Masaryk University, Brno, Czech Republic
| | - Milada Kohoutová
- First Faculty of Medicine, Institute of Biology and Medical Genetics, Charles University, Prague, Czech Republic
- General University Hospital, Prague, Czech Republic
| | - Ondřej Slanař
- General University Hospital, Prague, Czech Republic
- First Faculty of Medicine, Institute of Pharmacology, Charles University, Prague, Czech Republic
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Besharat ZM, Trocchianesi S, Verrienti A, Ciampi R, Cantara S, Romei C, Sabato C, Noviello TMR, Po A, Citarella A, Caruso FP, Panariello I, Gianno F, Carpino G, Gaudio E, Chiacchiarini M, Masuelli L, Sponziello M, Pecce V, Ramone T, Maino F, Dotta F, Ceccarelli M, Pezzullo L, Durante C, Castagna MG, Elisei R, Ferretti E. Circulating miR-26b-5p and miR-451a as diagnostic biomarkers in medullary thyroid carcinoma patients. J Endocrinol Invest 2023; 46:2583-2599. [PMID: 37286863 PMCID: PMC10632281 DOI: 10.1007/s40618-023-02115-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 05/15/2023] [Indexed: 06/09/2023]
Abstract
PURPOSE/METHODS The determination of tumour biomarkers is paramount to advancing personalized medicine, more so in rare tumours like medullary thyroid carcinoma (MTC), whose diagnosis is still challenging. The aim of this study was to identify non-invasive circulating biomarkers in MTC. To achieve this goal, paired MTC tissue and plasma extracellular vesicle samples were collected from multiple centres and microRNA (miRNA) expression levels were evaluated. RESULTS The samples from a discovery cohort of 23 MTC patients were analysed using miRNA arrays. Lasso logistic regression analysis resulted in the identification of a set of circulating miRNAs as diagnostic biomarkers. Among them, miR-26b-5p and miR-451a, were highly expressed and their expression decreased during follow-up in disease-free patients in the discovery cohort. Circulating miR-26b-5p and miR-451a were validated using droplet digital PCR in a second independent cohort of 12 MTC patients. CONCLUSION This study allowed the identification and validation of a signature of two circulating miRNAs, miR-26b-5p and miR-451a, in two independent cohorts reporting a significant diagnostic performance for MTC. The results of this study offer advancements in molecular diagnosis of MTC proposing a novel non-invasive tool to use in precision medicine.
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Affiliation(s)
- Z M Besharat
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - S Trocchianesi
- Department of Molecular Medicine, Sapienza University of Rome, 00161, Rome, Italy
| | - A Verrienti
- Department of Translational and Precision Medicine, Sapienza University of Rome, 00161, Rome, Italy
| | - R Ciampi
- Endocrine Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy
| | - S Cantara
- Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100, Siena, Italy
| | - C Romei
- Endocrine Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy
| | - C Sabato
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - T M R Noviello
- Biogem Scarl, Istituto di Ricerche Genetiche "Gaetano Salvatore", 83031, Ariano Irpino, Italy
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80138, Naples, Italy
| | - A Po
- Department of Molecular Medicine, Sapienza University of Rome, 00161, Rome, Italy
| | - A Citarella
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - F P Caruso
- Biogem Scarl, Istituto di Ricerche Genetiche "Gaetano Salvatore", 83031, Ariano Irpino, Italy
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80138, Naples, Italy
| | - I Panariello
- Thyroid Surgical Unit, IRCCS Fondazione G.Pascale, 80131, Naples, Italy
| | - F Gianno
- Department of Radiological, Oncological and Anatomo-Pathological Sciences, Sapienza University of Rome, 00161, Rome, Italy
| | - G Carpino
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - E Gaudio
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - M Chiacchiarini
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - L Masuelli
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - M Sponziello
- Department of Translational and Precision Medicine, Sapienza University of Rome, 00161, Rome, Italy
| | - V Pecce
- Department of Translational and Precision Medicine, Sapienza University of Rome, 00161, Rome, Italy
| | - T Ramone
- Endocrine Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy
| | - F Maino
- Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100, Siena, Italy
| | - F Dotta
- Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100, Siena, Italy
- Tuscany Centre for Precision Medicine (CReMeP), 53100, Siena, Italy
| | - M Ceccarelli
- Biogem Scarl, Istituto di Ricerche Genetiche "Gaetano Salvatore", 83031, Ariano Irpino, Italy
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80138, Naples, Italy
| | - L Pezzullo
- Thyroid Surgical Unit, IRCCS Fondazione G.Pascale, 80131, Naples, Italy
| | - C Durante
- Department of Translational and Precision Medicine, Sapienza University of Rome, 00161, Rome, Italy.
| | - M G Castagna
- Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100, Siena, Italy
| | - R Elisei
- Endocrine Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy
| | - E Ferretti
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
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Padroni L, De Marco L, Fiano V, Milani L, Marmiroli G, Giraudo MT, Macciotta A, Ricceri F, Sacerdote C. Identifying MicroRNAs Suitable for Detection of Breast Cancer: A Systematic Review of Discovery Phases Studies on MicroRNA Expression Profiles. Int J Mol Sci 2023; 24:15114. [PMID: 37894794 PMCID: PMC10607026 DOI: 10.3390/ijms242015114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
The analysis of circulating tumor cells and tumor-derived materials, such as circulating tumor DNA, circulating miRNAs (cfmiRNAs), and extracellular vehicles provides crucial information in cancer research. CfmiRNAs, a group of short noncoding regulatory RNAs, have gained attention as diagnostic and prognostic biomarkers. This review focuses on the discovery phases of cfmiRNA studies in breast cancer patients, aiming to identify altered cfmiRNA levels compared to healthy controls. A systematic literature search was conducted, resulting in 16 eligible publications. The studies included a total of 585 breast cancer cases and 496 healthy controls, with diverse sample types and different cfmiRNA assay panels. Several cfmiRNAs, including MIR16, MIR191, MIR484, MIR106a, and MIR193b, showed differential expressions between breast cancer cases and healthy controls. However, the studies had a high risk of bias and lacked standardized protocols. The findings highlight the need for robust study designs, standardized procedures, and larger sample sizes in discovery phase studies. Furthermore, the identified cfmiRNAs can serve as potential candidates for further validation studies in different populations. Improving the design and implementation of cfmiRNA research in liquid biopsies may enhance their clinical diagnostic utility in breast cancer patients.
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Affiliation(s)
- Lisa Padroni
- Unit of Cancer Epidemiology, Città Della Salute e Della Scienza University-Hospital and Center for Cancer Prevention (CPO), Via Santena 7, 10126 Turin, Italy; (L.P.); (L.D.M.); (G.M.)
| | - Laura De Marco
- Unit of Cancer Epidemiology, Città Della Salute e Della Scienza University-Hospital and Center for Cancer Prevention (CPO), Via Santena 7, 10126 Turin, Italy; (L.P.); (L.D.M.); (G.M.)
| | - Valentina Fiano
- Unit of Cancer Epidemiology, Department of Medical Sciences, University of Turin, 10126 Turin, Italy;
| | - Lorenzo Milani
- Centre for Biostatistics, Epidemiology and Public Health (C-BEPH), Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy; (L.M.); (M.T.G.); (A.M.); (F.R.)
| | - Giorgia Marmiroli
- Unit of Cancer Epidemiology, Città Della Salute e Della Scienza University-Hospital and Center for Cancer Prevention (CPO), Via Santena 7, 10126 Turin, Italy; (L.P.); (L.D.M.); (G.M.)
| | - Maria Teresa Giraudo
- Centre for Biostatistics, Epidemiology and Public Health (C-BEPH), Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy; (L.M.); (M.T.G.); (A.M.); (F.R.)
| | - Alessandra Macciotta
- Centre for Biostatistics, Epidemiology and Public Health (C-BEPH), Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy; (L.M.); (M.T.G.); (A.M.); (F.R.)
| | - Fulvio Ricceri
- Centre for Biostatistics, Epidemiology and Public Health (C-BEPH), Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy; (L.M.); (M.T.G.); (A.M.); (F.R.)
| | - Carlotta Sacerdote
- Unit of Cancer Epidemiology, Città Della Salute e Della Scienza University-Hospital and Center for Cancer Prevention (CPO), Via Santena 7, 10126 Turin, Italy; (L.P.); (L.D.M.); (G.M.)
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Zhou S, Van Bortle K. The Pol III transcriptome: Basic features, recurrent patterns, and emerging roles in cancer. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1782. [PMID: 36754845 PMCID: PMC10498592 DOI: 10.1002/wrna.1782] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 02/10/2023]
Abstract
The RNA polymerase III (Pol III) transcriptome is universally comprised of short, highly structured noncoding RNA (ncRNA). Through RNA-protein interactions, the Pol III transcriptome actuates functional activities ranging from nuclear gene regulation (7SK), splicing (U6, U6atac), and RNA maturation and stability (RMRP, RPPH1, Y RNA), to cytoplasmic protein targeting (7SL) and translation (tRNA, 5S rRNA). In higher eukaryotes, the Pol III transcriptome has expanded to include additional, recently evolved ncRNA species that effectively broaden the footprint of Pol III transcription to additional cellular activities. Newly evolved ncRNAs function as riboregulators of autophagy (vault), immune signaling cascades (nc886), and translation (Alu, BC200, snaR). Notably, upregulation of Pol III transcription is frequently observed in cancer, and multiple ncRNA species are linked to both cancer progression and poor survival outcomes among cancer patients. In this review, we outline the basic features and functions of the Pol III transcriptome, and the evidence for dysregulation and dysfunction for each ncRNA in cancer. When taken together, recurrent patterns emerge, ranging from shared functional motifs that include molecular scaffolding and protein sequestration, overlapping protein interactions, and immunostimulatory activities, to the biogenesis of analogous small RNA fragments and noncanonical miRNAs, augmenting the function of the Pol III transcriptome and further broadening its role in cancer. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Processing > Processing of Small RNAs RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications.
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Affiliation(s)
- Sihang Zhou
- Department of Cell and Developmental Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Kevin Van Bortle
- Department of Cell and Developmental Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
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Ding S, Dong X, Song X. Tumor educated platelet: the novel BioSource for cancer detection. Cancer Cell Int 2023; 23:91. [PMID: 37170255 PMCID: PMC10176761 DOI: 10.1186/s12935-023-02927-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/15/2023] [Indexed: 05/13/2023] Open
Abstract
Platelets, involved in the whole process of tumorigenesis and development, constantly absorb and enrich tumor-specific substances in the circulation during their life span, thus called "Tumor Educated Platelets" (TEPs). The alterations of platelet mRNA profiles have been identified as tumor markers due to the regulatory mechanism of post-transcriptional splicing. Small nuclear RNAs (SnRNAs), the important spliceosome components in platelets, dominate platelet RNA splicing and regulate the splicing intensity of pre-mRNA. Endogenous variation at the snRNA levels leads to widespread differences in alternative splicing, thereby driving the development and progression of neoplastic diseases. This review systematically expounds the bidirectional tumor-platelets interactions, especially the tumor induced alternative splicing in TEP, and further explores whether molecules related to alternative splicing such as snRNAs can serve as novel biomarkers for cancer diagnostics.
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Affiliation(s)
- Shanshan Ding
- Department of Clinical Laboratory, Shandong Cancer Hospital & Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, PR China
| | - Xiaohan Dong
- Department of Laboratory Medicine, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Xingguo Song
- Department of Clinical Laboratory, Shandong Cancer Hospital & Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, PR China.
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An Epidemiological Systematic Review with Meta-Analysis on Biomarker Role of Circulating MicroRNAs in Breast Cancer Incidence. Int J Mol Sci 2023; 24:ijms24043910. [PMID: 36835336 PMCID: PMC9967215 DOI: 10.3390/ijms24043910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023] Open
Abstract
Breast cancer (BC) is a multifactorial disease caused by an interaction between genetic predisposition and environmental exposures. MicroRNAs are a group of small non-coding RNA molecules, which seem to have a role either as tumor suppressor genes or oncogenes and seem to be related to cancer risk factors. We conducted a systematic review and meta-analysis to identify circulating microRNAs related to BC diagnosis, paying special attention to methodological problems in this research field. A meta-analysis was performed for microRNAs analyzed in at least three independent studies where sufficient data to make analysis were presented. Seventy-five studies were included in the systematic review. A meta-analysis was performed for microRNAs analyzed in at least three independent studies where sufficient data to make analysis were presented. Seven studies were included in the MIR21 and MIR155 meta-analysis, while four studies were included in the MIR10b metanalysis. The pooled sensitivity and specificity of MIR21 for BC diagnosis were 0.86 (95%CI 0.76-0.93) and 0.84 (95%CI 0.71-0.92), 0.83 (95%CI 0.72-0.91) and 0.90 (95%CI 0.69-0.97) for MIR155, and 0.56 (95%CI 0.32-0.71) and 0.95 (95%CI 0.88-0.98) for MIR10b, respectively. Several other microRNAs were found to be dysregulated, distinguishing BC patients from healthy controls. However, there was little consistency between included studies, making it difficult to identify specific microRNAs useful for diagnosis.
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Agostini S, Mancuso R, Citterio LA, Mihali GA, Arosio B, Clerici M. Evaluation of serum miRNAs expression in frail and robust subjects undergoing multicomponent exercise protocol (VIVIFRAIL). J Transl Med 2023; 21:67. [PMID: 36726153 PMCID: PMC9891895 DOI: 10.1186/s12967-023-03911-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/22/2023] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Frailty, defined as physical performance impairment, is a common condition in older adults and can anticipate the development of sarcopenia, a geriatric syndrome characterized by loss of muscle strength and mass. microRNAs (miRNAs) are short molecules of RNA endowed with the ability to modulate gene expression; miRNAs are present in serum and are considered potential biomarkers for several diseases. Serum concentration of miR-451a, miR-93-5p, miR-155-5p, miR-421-3p, miR-425-5p, miR-495-3p and miR-744-5p was recently shown to be altered in sarcopenic patients. METHODS We verified if a particular miRNAs pattern could be detected in frailty as well by analyzing these molecules in 50 frail and 136 robust subjects. Additionally, a subgroup of these subjects (15 frail and 30 robust) underwent a 12-week program based on a multicomponent exercise protocol (VIVIFRAIL) consisting of resistance training, gait retraining, and balance training. After the program, serum miRNAs concentration was measured again, to verify whether the physical activity had an effect on their concentration. Moreover, clinical characteristics and indicators of physical performance of all subjects were compared before and after intervention to verify the effect of the VIVIFRAIL program. RESULTS At the end of the multicomponent exercise program, Short Physical Performance Battery (SPPB) score as well right and left handgrip (p < 0.05) were significantly increased in frail subjects; right and left handgrip significantly were increased also in robust subjects (p < 0.05). Interestingly, the variation of SPPB was significantly higher in frail compared to robust subjects (p < 0.0001). Moreover, at the end of the program, in frail compared to robust subjects: miR-451a serum concentration was significantly increased (frail: 6.59 × 104; 1.12 × 104-2.5 × 105 c/ng; robust: 2.31 × 104; 1.94 × 103-2.01 × 105 c/ng) (p < 0.05); and 2) miR-93-5p and miR-495-3p serum concentration was reduced, whereas that of miR-155-5p was significantly increased (p < 0.05 in both cases). Serum concentration of miR-93-5p and miR-495-3p was decreased, and that of miR-155-5p was increased at the end of the program in robust subjects alone, statistical significance being reached for miR-93-5p alone (p = 0.02). CONCLUSION These results suggest that serum miR-451a should be investigated as a potential biomarker for frailty and show that the VIVIFRAIL multicomponent program modulates circulatory miRNAs expression, at least in older adults.
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Affiliation(s)
- Simone Agostini
- grid.418563.d0000 0001 1090 9021Laboratory of Molecular Medicine and Biotechnologies, IRCCS Fondazione Don Carlo Gnocchi ONLUS, Piazza Morandi 3, 20100 Milan, Italy
| | - Roberta Mancuso
- Laboratory of Molecular Medicine and Biotechnologies, IRCCS Fondazione Don Carlo Gnocchi ONLUS, Piazza Morandi 3, 20100, Milan, Italy.
| | - Lorenzo Agostino Citterio
- grid.418563.d0000 0001 1090 9021Laboratory of Molecular Medicine and Biotechnologies, IRCCS Fondazione Don Carlo Gnocchi ONLUS, Piazza Morandi 3, 20100 Milan, Italy
| | - Gabriela Alexandra Mihali
- grid.414818.00000 0004 1757 8749Geriatic Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Beatrice Arosio
- grid.4708.b0000 0004 1757 2822Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Mario Clerici
- grid.418563.d0000 0001 1090 9021Laboratory of Molecular Medicine and Biotechnologies, IRCCS Fondazione Don Carlo Gnocchi ONLUS, Piazza Morandi 3, 20100 Milan, Italy ,grid.4708.b0000 0004 1757 2822Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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Záveský L, Slanař O. Discovery and Evaluation of Extracellular MicroRNA Biomarkers in Plasma, Ascites, and Urine. Methods Mol Biol 2023; 2630:135-143. [PMID: 36689181 DOI: 10.1007/978-1-0716-2982-6_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
MicroRNAs (miRNAs) comprise a large group of small noncoding RNAs within a heterogeneous entity of noncoding RNAs, forming potent functional tools regulating the crucial biological processes within cells and the body. Cell-free miRNAs have become one of the novel promising diagnostic, predictive, and prognostic biomarkers for various diseases extensively investigated in recent years. This is due to their presence within extracellular fractions of various body fluids suggesting their potential as noninvasive "liquid biopsy" in case of their dysregulated expression.Among the body fluids, blood plasma and serum along with urine are the most commonly investigated sources of various types of cell-free miRNAs. Another body fluid, i.e., ascites (effusion, peritoneal/pleural fluid) may be the clinically important fluid particularly associated with carcinogenesis in ovarian carcinomas and hepatocellular carcinomas or in case of liver cirrhosis.Here, we provide a protocol for an expression profiling study based on qPCR analyses aimed at finding novel candidate miRNAs via small-scale or large-scale screening and evaluation experiments using liquid biopsies of blood plasma, ascites, and urine. Using this approach may be worth in cases where no (or limited) information is available on miRNA expression in particular diseases and geographic regions, for validation of previously published miRNAs with promising diagnostic potential, particularly in situations where follow-up study is aimed at validating miRNAs coming from (micro) array or NGS experiments, or where funding for large-scale experiments is not available. We demonstrate that assessment of plasma, ascites, and urine miRNAs expression may represent a feasible method to explore the potential for finding novel diagnostic, predictive, and prognostic biomarkers for various diseases.
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Affiliation(s)
- Luděk Záveský
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, and General University Hospital in Prague, Prague, Czech Republic.
- Institute of Pharmacology, First Faculty of Medicine, Charles University, Prague, and General University Hospital in Prague, Prague, Czech Republic.
| | - Ondřej Slanař
- Institute of Pharmacology, First Faculty of Medicine, Charles University, Prague, and General University Hospital in Prague, Prague, Czech Republic
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Zhang C, Zhang W, Shui Y, Li P, Tian Z, Duan S, Wei Q. Implications of m6A-associated snRNAs in the prognosis and immunotherapeutic responses of hepatocellular carcinoma. Front Immunol 2022; 13:1001506. [PMID: 36405741 PMCID: PMC9667552 DOI: 10.3389/fimmu.2022.1001506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 10/18/2022] [Indexed: 11/07/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) is the most prevalent pathological type of liver cancer worldwide with high mortality and poor prognosis. N6-methyladenosine (m6A) can modify RNAs such as mRNA, lncRNA, miRNA, and tRNA, thereby playing a critical role in the pathogenesis of HCC. However, the role of m6A-associated small nuclear RNA (snRNA) in the prognostic value and immunotherapeutic response in HCC remains unclear. Materials and methods In this study, snRNA expression data, gene mutation data, and clinical data of HCC patients were acquired from The Cancer Genome Atlas (TCGA) database. We used the least absolute shrinkage and selection operator (LASSO) Cox regression analysis to identify significant prognostic m6A-associated snRNAs, and then developed a multivariate Cox model based on the selected snRNAs. HCC patients were split into low- and high-risk groups based on the median risk score. We subsequently performed Kaplan-Meier curve analysis to estimate overall survival (OS) by clinicopathological characteristics and tumor mutational burden (TMB) status in low- and high-risk HCC patients. Finally, we compared the immunotherapeutic response as represented by tumor immune dysfunction and exclusion (TIDE) scores between the two risk groups. Results Eight m6A-associated snRNAs were selected as independent predictors to develop the risk model. Our results revealed that the OS of HCC patients in the high-risk group was significantly worse than that in the low-risk group on clinicopathologic characteristics, including age (≤65 years and >65 years), gender (male), grade (G I-II and G III-IV) and TNM staging (Stage I-II and Stage III-IV). In addition, the OS of low-TMB and low-risk group was longer than that of high-TMB and high-risk group. The TIDE score indicated that HCC patients in the high-risk group were more susceptible to immunotherapy. Conclusion Our study suggests that m6A-associated snRNAs may be useful biomarkers for the prognosis of HCC and that m6A-associated snRNA models can predict the effect of immunotherapy in HCC patients.
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Affiliation(s)
- Cheng Zhang
- Department of Medical Oncology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Wangjian Zhang
- School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yongjie Shui
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ping Li
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhifeng Tian
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shiwei Duan
- School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang, China
- *Correspondence: Qichun Wei, ; Shiwei Duan,
| | - Qichun Wei
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- *Correspondence: Qichun Wei, ; Shiwei Duan,
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