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Scheurer MJJ, Wagner A, Sakkas A, Pietzka S, Derka S, Vairaktari G, Wilde F, Schramm A, Bauer A, Siebert R, Ammerpohl O, Ebeling M. Influence of analytical procedures on miRNA expression analyses in saliva samples. J Craniomaxillofac Surg 2024; 52:748-754. [PMID: 38582670 DOI: 10.1016/j.jcms.2024.03.030] [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: 02/15/2024] [Revised: 03/07/2024] [Accepted: 03/12/2024] [Indexed: 04/08/2024] Open
Abstract
Aim of this study was to demonstrate the influence of different analytical procedures and techniques on the resulting miRNA expression profile in healthy control subjects and tumor patients using the oral squamous cell carcinoma (OSCC) model and to demonstrate the technical and biological reproducibility. Body fluids such as saliva are suitable for non-invasive miRNA analysis because ubiquitously circulating miRNA can be found in them. It was technically possible to distinguish between healthy and diseased samples based on the miRNA expression profile found. Regardless of the methodology used, good technical reproducibility of the results seems to be achievable. On the other hand, biological reproducibility was inadequate, which is why prompt sampling and sequencing is recommended. The data indicate that malignant lesions can be detected using miRNA signatures extracted from saliva. This could stimulate further research to establish standardized protocols and kits for sample collection, miRNA extraction, sequencing and interpretation of results.
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Affiliation(s)
- Mario J J Scheurer
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University Hospital of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
| | - Alexander Wagner
- Medical School Ulm, University Hospital of Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Andreas Sakkas
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University Hospital of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany; Department of Oral and Maxillofacial Surgery, University Hospital of Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Sebastian Pietzka
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University Hospital of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany; Department of Oral and Maxillofacial Surgery, University Hospital of Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Spyridoula Derka
- Department of Oral and Plastic Maxillofacial Surgery, Attikon General University Hospital of Athens, Rimini 1, Chaidari, 12462, Athens, Greece
| | - Georgia Vairaktari
- Department of Oral and Plastic Maxillofacial Surgery, Attikon General University Hospital of Athens, Rimini 1, Chaidari, 12462, Athens, Greece
| | - Frank Wilde
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University Hospital of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany; Department of Oral and Maxillofacial Surgery, University Hospital of Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Alexander Schramm
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University Hospital of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany; Department of Oral and Maxillofacial Surgery, University Hospital of Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Anke Bauer
- Institute for Human Genetics, Ulm University and Ulm University Medical Center, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Reiner Siebert
- Institute for Human Genetics, Ulm University and Ulm University Medical Center, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Ole Ammerpohl
- Institute for Human Genetics, Ulm University and Ulm University Medical Center, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Marcel Ebeling
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University Hospital of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany; Department of Oral and Maxillofacial Surgery, University Hospital of Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany.
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Géli V, Nabet N. Saliva, a molecular reflection of the human body? Implications for diagnosis and treatment. Cell Stress 2024; 8:59-68. [PMID: 38826491 PMCID: PMC11144459 DOI: 10.15698/cst2024.05.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 06/04/2024] Open
Abstract
For many diseases, and cancer in particular, early diagnosis allows a wider range of therapies and a better disease management. This has led to improvements in diagnostic procedures, most often based on tissue biopsies or blood samples. Other biological fluids have been used to diagnose disease, and among them saliva offers a number of advantages because it can be collected non-invasively from large populations at relatively low cost. To what extent might saliva content reveal the presence of a tumour located at a distance from the oral cavity and the molecular information obtained from saliva be used to establish a diagnosis are current questions. This review focuses primarily on the content of saliva and shows how it potentially offers a source of diagnosis, possibly at an early stage, for pathologies such as cancers or endometriosis.
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Romanò S, Nele V, Campani V, De Rosa G, Cinti S. A comprehensive guide to extract information from extracellular vesicles: a tutorial review towards novel analytical developments. Anal Chim Acta 2024; 1302:342473. [PMID: 38580402 DOI: 10.1016/j.aca.2024.342473] [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: 01/03/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 04/07/2024]
Abstract
In the medical field, extracellular vesicles (EVs) are gaining importance as they act as cells mediators. These are phospholipid bilayer vesicles and contain crucial biochemical information about their mother cells being carrier of different biomolecules such as small molecules, proteins, lipids, and nucleic acids. After release into the extracellular matrix, they enter the systemic circulation and can be found in all human biofluids. Since EVs reflect the state of the cell of origin, there is exponential attention as potential source of new circulating biomarkers for liquid biopsy. The use of EVs in clinical practice faces several challenges that need to be addressed: these include the standardization of lysis protocols, the availability of low-cost reagents and the development of analytical tools capable of detecting biomarkers. The process of lysis is a crucial step that can impact all subsequent analyses, towards the development of novel analytical strategies. To aid researchers to support the evolution of measurement science technology, this tutorial review evaluates and discuss the most commonly protocols used to characterize the contents of EVs, including their advantages and disadvantages in terms of experimental procedures, time and equipment. The purpose of this tutorial review is to offer practical guide to researchers which are intended to develop novel analytical approaches. Some of the most significant applications are considered, highlighting their main characteristics divided per mechanism of action. Finally, comprehensive tables which provide an overview at a glance are provided to readers.
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Affiliation(s)
- Sabrina Romanò
- Department of Pharmacy, University of Naples Federico II, Italy.
| | - Valeria Nele
- Department of Pharmacy, University of Naples Federico II, Italy
| | | | | | - Stefano Cinti
- Department of Pharmacy, University of Naples Federico II, Italy.
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Lederer T, Hipler NM, Thon C, Kupcinskas J, Link A. Comparison of Fecal MicroRNA Isolation Using Various Total RNA Isolation Kits. Genes (Basel) 2024; 15:498. [PMID: 38674432 PMCID: PMC11050405 DOI: 10.3390/genes15040498] [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: 03/18/2024] [Revised: 04/09/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
Fecal specimens have long been regarded as promising sources for gastrointestinal cancer screening and have, thus, been extensively investigated in biomarker research. MicroRNAs (miRNAs) are small, non-coding RNA molecules involved in regulating various biological processes. They are commonly dysregulated during tumor development and exhibit differential expression in feces. To assess the preanalytical feasibility of fecal miRNA analysis, we systematically compared the performance of commonly used total RNA extraction methods. Fecal samples from healthy subjects were utilized for this evaluation. Various methods, including miRNeasy, Universal, Trizol, RNeasy, and mirVana kits, were employed to isolate total RNA. MiRNA expression analyses were conducted using TaqMan or SYBR Green qRT-PCR for a subset of miRNAs, with externally spiked-in cel-miR-39 used for normalization. Most methods demonstrated similar performance in terms of the total RNA concentration and purity. Externally spiked cel-miR-39 and endogenous miRNAs (RNU6b, miR-16, and miR-21) exhibited comparable concentrations across the different RNA isolation methods, whereas the RNeasy mini kit consistently yielded lower values. Our findings suggest that various isolation methods produce reproducible and comparable miRNA expression results, supporting the potential comparability and translational applicability of miRNA-based biomarker research in the future.
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Affiliation(s)
- Theresa Lederer
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Noam M. Hipler
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Cosima Thon
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Juozas Kupcinskas
- Department of Gastroenterology and Institute for Digestive Research, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania;
| | - Alexander Link
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
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Farshbaf A, Mohajertehran F, Aghaee‐Bakhtiari SH, Ayatollahi H, Douzandeh K, Pakfetrat A, Mohtasham N. Downregulation of salivary miR-3928 as a potential biomarker in patients with oral squamous cell carcinoma and oral lichen planus. Clin Exp Dent Res 2024; 10:e877. [PMID: 38481355 PMCID: PMC10938069 DOI: 10.1002/cre2.877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/07/2024] [Accepted: 02/25/2024] [Indexed: 03/17/2024] Open
Abstract
OBJECTIVES Recent studies highlighted the role of miR expressed in saliva as reliable diagnostic and prognostic tools in the long-term monitoring of cancer processes such as oral squamous carcinoma (OSCC). Based on a few previous studies, it seems the miR-3928 can be considered a master regulator in carcinogenesis, and it can be therapeutically exploited. This is the first study that compared oral potentially malignant disorder (OLP) and malignant (OSCC) lesions for miR-3928 expression. MATERIALS AND METHODS In this cross-sectional study, saliva samples from 30 healthy control individuals, 30 patients with erosive/atrophic oral lichen planus, and 31 patients with OSCC were collected. The evaluation of miR-3928 expression by q-PCR and its correlation with clinicopathological indices were analyzed by Shapiro-Wilk, Kruskal-Wallis, Pearson's χ2 , and Mann-Whitney tests. The p-value less than .05 indicated statistically significant results. RESULTS Based on nonparametric Kruskal-Wallis test results, there was a statistically significant difference between the ages of three study groups (p < .05). This test demonstrated a statistically significant difference between the average of miR-3928 expression in three study groups (p < .05). The result of the χ2 test showed a statistically significant difference in miR-3928 expression between patients with OLP (p = .01) and also patients with OSCC (p < .0001) in comparison to the control group. CONCLUSIONS The salivary miR-3928 can play a tumor suppressive role in the pathobiology of OSCC, and it is significantly downregulated in patients. According to the potential tumor suppressive role of miR-3928 in the OSCC process, we can consider this microRNA as a biomarker for future early diagnosis, screening, and potential target therapy.
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Affiliation(s)
- Alieh Farshbaf
- Dental Research CenterMashhad University of Medical SciencesMashhadIran
| | - Farnaz Mohajertehran
- Oral and Maxillofacial Diseases Research CenterMashhad University of Medical SciencesMashhadIran
- Department of Oral and Maxillofacial Pathology, School of DentistryMashhad University of Medical SciencesMashhadIran
| | - Seyed Hamid Aghaee‐Bakhtiari
- Department of Medical Biotechnology and Nanotechnology, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
- Bioinformatics Research CenterMashhad University of Medical SciencesMashhadIran
| | - Hossein Ayatollahi
- Hematology Department, Faculty of MedicineMashhad University of Medical ScienceMashhadIran
- Pathology Department, Cancer Molecular Pathology Research CenterMashhad University of Medical SciencesMashhadIran
| | - Katayoun Douzandeh
- Student Research CommitteeMashhad University of Medical SciencesMashhadIran
| | - Atessa Pakfetrat
- Oral and Maxillofacial Diseases Research CenterMashhad University of Medical SciencesMashhadIran
| | - Nooshin Mohtasham
- Oral and Maxillofacial Diseases Research CenterMashhad University of Medical SciencesMashhadIran
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Huang J, Xu Y, Huang P. Salivary miR-150-5p as an indicator of periodontitis severity and regulator of human periodontal ligament fibroblast behavior by targeting AIFM2. J Periodontal Res 2024; 59:187-194. [PMID: 37965810 DOI: 10.1111/jre.13205] [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: 05/31/2023] [Revised: 09/06/2023] [Accepted: 10/30/2023] [Indexed: 11/16/2023]
Abstract
OBJECTIVE This study aimed to evaluate the role of miR-150-5p in the onset and progression of periodontitis, and reveal the potential molecular mechanism underlying its function and to explore a novel biomarker for periodontitis. BACKGROUND Periodontitis is the leading cause of tooth loss in adults, emphasizing the need for a biomarker to improve its early detection and prevention. The association of miR-150-5p with diseases related to Fuscobacterium nucleatum implies its potential involvement in periodontitis. METHODS The expression of miR-150-5p in the saliva of patients with periodontitis (n = 77) and healthy individuals (n = 43) was assessed by PCR. Human gingival fibroblasts (HGFs) were induced with an osteogenic culture medium. The regulatory effect of miR-150-5p on the proliferation and migration of HGFs was assessed by CCK8 and transwell assays. Osteogenic differentiation was estimated based on the expression of corresponding factors through western blotting, and the inflammatory response was evaluated by measuring the levels of pro-inflammatory cytokines using ELISA. RESULTS Significant upregulation of miR-150-5p was observed in patients with periodontitis, which sensitively distinguished them and was closely associated with the severity and periodontal index of the condition. In HGFs, osteogenic induction (OI) resulted in increased miR-150-5p levels, which negatively regulated the expression of AIFM2. Silencing miR-150-5p significantly attenuated OI-induced suppression of proliferation and migration of HGFs. The silencing also alleviated inflammation and osteogenic differentiation, which was reversed upon AIFM2 knockdown. CONCLUSION Upregulated miR-150-5p in periodontitis served as a diagnostic biomarker, indicating the occurrence and aggravation of disease condition. Silencing miR-150-5p inhibited the osteogenic differentiation and inflammation of HGFs by negatively modulating AIFM2.
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Affiliation(s)
- Jing Huang
- Department of Orthodontics, Affiliated Stomatological Hospital Fujian Medical University, Fuzhou, China
| | - Yuejing Xu
- Department of Stomatology, The Second Affiliated Hospital of FMU, Quanzhou, China
| | - Pengcheng Huang
- Department of Orthodontics, Affiliated Stomatological Hospital Fujian Medical University, Fuzhou, China
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7
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Romani C, Baronchelli M, Assoni C, Mattavelli D, Calza S, Piazza C, Bossi P. Stability of circulating miRNA in saliva: The influence of sample associated pre-analytical variables. Clin Chim Acta 2024; 553:117702. [PMID: 38097127 DOI: 10.1016/j.cca.2023.117702] [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: 09/13/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND AND AIMS Increasing evidence supports the practicability of salivary cell-free (cf) miRNA as liquid biopsy markers in cancers. Its successful translation in the clinical setting requires reproducible approaches for saliva manipulation, in order to control for pre-analytical variables influencing miRNA stability. This study aims to define the optimal conditions to maintain the integrity of saliva during collection, transport and processing with respect to cf-miRNA quantification. MATERIALS AND METHODS Saliva was collected from 20 healthy subjects and 8 oral cancer patients. Two sampling methods were tested and different storage temperatures and times were evaluated. Salivary expression level of target miRNAs was quantified by qPCR. Comparison between group mean values at specific conditions were performed using paired t-tests. Agreement between measurements was evaluated using a Bland-Altman plot. RESULTS Different collection methods revealed comparable levels of salivary miR-484 and miR-106b-5p in both subject cohorts. MiRNAs were stable for up to 48 h at 4 °C in saliva supernatant, showing significant alteration after 96 h. Mid-term storage of supernatant at -20 °C decreased miRNA stability significantly compared to standard -80 °C. CONCLUSIONS Cf-miRNA in saliva were slightly altered by collection methods and storage conditions, both in healthy and in pathological contexts, and remained stable for a period of time compatible with main clinical routine needs.
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Affiliation(s)
- Chiara Romani
- Angelo Nocivelli Institute of Molecular Medicine, ASST Spedali Civili of Brescia, Brescia, Italy; Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, School of Medicine, Brescia, Italy
| | - Maria Baronchelli
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, School of Medicine, Brescia, Italy; Medical Oncology Unit, ASST Spedali Civili of Brescia, Brescia, Italy
| | - Claudia Assoni
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, School of Medicine, Brescia, Italy; Medical Oncology Unit, ASST Spedali Civili of Brescia, Brescia, Italy
| | - Davide Mattavelli
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, School of Medicine, Brescia, Italy; Unit of Otorhinolaryngology - Head and Neck Surgery, ASST Spedali Civili of Brescia, Brescia, Italy
| | - Stefano Calza
- Department of Molecular and Translational Medicine, Unit of Biostatistics and Bioinformatics, University of Brescia, Brescia, Italy.
| | - Cesare Piazza
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, School of Medicine, Brescia, Italy; Unit of Otorhinolaryngology - Head and Neck Surgery, ASST Spedali Civili of Brescia, Brescia, Italy
| | - Paolo Bossi
- Medical Oncology Unit, ASST Spedali Civili of Brescia, Brescia, Italy
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Moos WH, Faller DV, Glavas IP, Kanara I, Kodukula K, Pernokas J, Pernokas M, Pinkert CA, Powers WR, Sampani K, Steliou K, Vavvas DG. Epilepsy: Mitochondrial connections to the 'Sacred' disease. Mitochondrion 2023; 72:84-101. [PMID: 37582467 DOI: 10.1016/j.mito.2023.08.002] [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: 06/01/2023] [Revised: 08/03/2023] [Accepted: 08/12/2023] [Indexed: 08/17/2023]
Abstract
Over 65 million people suffer from recurrent, unprovoked seizures. The lack of validated biomarkers specific for myriad forms of epilepsy makes diagnosis challenging. Diagnosis and monitoring of childhood epilepsy add to the need for non-invasive biomarkers, especially when evaluating antiseizure medications. Although underlying mechanisms of epileptogenesis are not fully understood, evidence for mitochondrial involvement is substantial. Seizures affect 35%-60% of patients diagnosed with mitochondrial diseases. Mitochondrial dysfunction is pathophysiological in various epilepsies, including those of non-mitochondrial origin. Decreased ATP production caused by malfunctioning brain cell mitochondria leads to altered neuronal bioenergetics, metabolism and neurological complications, including seizures. Iron-dependent lipid peroxidation initiates ferroptosis, a cell death pathway that aligns with altered mitochondrial bioenergetics, metabolism and morphology found in neurodegenerative diseases (NDDs). Studies in mouse genetic models with seizure phenotypes where the function of an essential selenoprotein (GPX4) is targeted suggest roles for ferroptosis in epilepsy. GPX4 is pivotal in NDDs, where selenium protects interneurons from ferroptosis. Selenium is an essential central nervous system micronutrient and trace element. Low serum concentrations of selenium and other trace elements and minerals, including iron, are noted in diagnosing childhood epilepsy. Selenium supplements alleviate intractable seizures in children with reduced GPX activity. Copper and cuproptosis, like iron and ferroptosis, link to mitochondria and NDDs. Connecting these mechanistic pathways to selenoproteins provides new insights into treating seizures, pointing to using medicines including prodrugs of lipoic acid to treat epilepsy and to potential alternative therapeutic approaches including transcranial magnetic stimulation (transcranial), photobiomodulation and vagus nerve stimulation.
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Affiliation(s)
- Walter H Moos
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, San Francisco, CA, USA.
| | - Douglas V Faller
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Cancer Research Center, Boston University School of Medicine, Boston, MA, USA
| | - Ioannis P Glavas
- Department of Ophthalmology, New York University School of Medicine, New York, NY, USA
| | | | | | - Julie Pernokas
- Advanced Dental Associates of New England, Woburn, MA, USA
| | - Mark Pernokas
- Advanced Dental Associates of New England, Woburn, MA, USA
| | - Carl A Pinkert
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Whitney R Powers
- Department of Health Sciences, Boston University, Boston, MA, USA; Department of Anatomy, Boston University School of Medicine, Boston, MA, USA
| | - Konstantina Sampani
- Beetham Eye Institute, Joslin Diabetes Center, Boston, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Kosta Steliou
- Cancer Research Center, Boston University School of Medicine, Boston, MA, USA; PhenoMatriX, Inc., Natick, MA, USA
| | - Demetrios G Vavvas
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA; Retina Service, Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
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Săsăran MO, Bănescu C. Role of salivary miRNAs in the diagnosis of gastrointestinal disorders: a mini-review of available evidence. Front Genet 2023; 14:1228482. [PMID: 37456668 PMCID: PMC10346860 DOI: 10.3389/fgene.2023.1228482] [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: 05/30/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023] Open
Abstract
MiRNAs are short, non-coding RNA molecules, which are involved in the regulation of gene expression and which play an important role in various biological processes, including inflammation and cell cycle regulation. The possibility of detecting their extracellular expression, within body fluids, represented the main background for their potential use as non-invasive biomarkers of various diseases. Salivary miRNAs particularly gained interest recently due to the facile collection of stimulated/unstimulated saliva and their stability among healthy subjects. Furthermore, miRNAs seem to represent biomarker candidates of gastrointestinal disorders, with miRNA-based therapeutics showing great potential in those conditions. This review aimed to highlight available evidence on the role of salivary miRNAs in different gastrointestinal conditions. Most salivary-based miRNA studies available in the literature that focused on pathologies of the gastrointestinal tract have so far been conducted on pancreatic cancer patients and delivered reliable results. A few studies also showed the diagnostic utility of salivary miRNAs in conditions such as esophagitis, esophageal cancer, colorectal cancer, or inflammatory bowel disease. Moreover, several authors showed that salivary miRNAs may confidently be used as biomarkers of gastric cancer, but the use of salivary miRNA candidates in gastric inflammation and pre-malignant lesions, essential stages of Correa's cascade, is still put into question. On the other hand, besides miRNAs, other salivary omics have shown biomarker potential in gastro-intestinal conditions. The limited available data suggest that salivary miRNAs may represent reliable biomarker candidates for gastrointestinal conditions. However, their diagnostic potential requires validation through future research, performed on larger cohorts.
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Affiliation(s)
- Maria Oana Săsăran
- Department of Pediatrics 3, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mureș, Târgu Mureș, Romania
| | - Claudia Bănescu
- Genetics Department, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, Targu Mures, Romania
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Ryu IS, Kim DH, Ro JY, Park BG, Kim SH, Im JY, Lee JY, Yoon SJ, Kang H, Iwatsubo T, Teunissen CE, Cho HJ, Ryu JH. The microRNA-485-3p concentration in salivary exosome-enriched extracellular vesicles is related to amyloid β deposition in the brain of patients with Alzheimer's disease. Clin Biochem 2023:110603. [PMID: 37355215 DOI: 10.1016/j.clinbiochem.2023.110603] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 06/15/2023] [Accepted: 06/17/2023] [Indexed: 06/26/2023]
Abstract
OBJECTIVES Alzheimer's disease (AD) is an irreversible neurodegenerative disease characterized by progressive long-term memory loss and cognitive dysfunction. Neuroimaging tests for abnormal amyloid-β (Aβ) deposition are considered the most reliable methods for the diagnosis of AD; however, the cost for such testing is very high and generally not covered by national insurance systems. Accordingly, it is only recommended for individuals exhibiting clinical symptoms of AD supported by clinical cognitive assessments. Recently, it was suggested that dysregulated microRNA-485-3p (miRNA-485-3p) in the brain and cerebrospinal fluid is closely related to pathogenesis of AD. However, a relationship between circulating miRNA-485-3p in salivary exosome-enriched extracellular vesicles (EE-EV) and Aβ deposition in the brain has not been observed. DESIGN & METHODS Using quantitative real-time polymerase chain reaction, we analyzed miRNA-485-3p concentration in salivary EE-EV. We used receiver operating characteristic (ROC) curve analysis to evaluate its predictive value for Aβ positron emission tomography (Aβ-PET) positivity in patients with AD. RESULTS Our results showed that the miRNA-485-3p concentration in salivary EE-EV isolated from patients with AD was significantly increased compared with that in the healthy controls (p<0.0001). In the analysis of all participants, the miRNA-485-3p concentration was significantly increased in Aβ-PET-positive participants compared to Aβ-PET-negative participants (p<0.0001). Further analysis using only AD patients also showed that the miRNA-485-3p concentration was significantly increased in Aβ-PET-positive AD patients vs. Aβ-PET-negative AD patients (p=0.0063). The ROC curve analysis for differentiating Aβ-PET-positive and negative participants showed that the area under the curve for miRNA-485-3p was 0.9217. CONCLUSION These findings suggested that the miRNA-485-3p concentration in salivary EE-EV was closely related to Aβ deposition in the brain and had high diagnostic accuracy for predicting Aβ-PET positivity.
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Affiliation(s)
- In Soo Ryu
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Dae Hoon Kim
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Ju-Ye Ro
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Byeong-Gyu Park
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Seo Hyun Kim
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Jong-Yeop Im
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Jun-Young Lee
- Borame Medical Center 20, Boramae-ro 5-gil, Dongjak-gu, Seoul 07061, South Korea
| | - Soo Jin Yoon
- Daejeon Eulji Medical Center, 95, Dunsanseo-ro, Seo-gu, Daejeon 35233, South Korea
| | - Heeyoung Kang
- Gyeongsang National University Hospital, 501, Jinju-daero, Jinju 52828, South Korea
| | - Takeshi Iwatsubo
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Charlotte E Teunissen
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam 1081, Netherlands
| | - Hyun-Jeong Cho
- Department of Biomedical Laboratory Science, College of Medical Science, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, South Korea.
| | - Jin-Hyeob Ryu
- BIORCHESTRA Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea; BIORCHESTRA US., Inc., 1 Kendall square, Building 200, Suite 2-103, Cambridge, MA, 02139, United States.
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