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Hassanpour M, Salybekov AA. Whispers in the Blood: Leveraging MicroRNAs for Unveiling Autologous Blood Doping in Athletes. Int J Mol Sci 2023; 25:249. [PMID: 38203416 PMCID: PMC10779309 DOI: 10.3390/ijms25010249] [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: 10/31/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024] Open
Abstract
The prevalence of autologous blood transfusions (ABTs) presents a formidable challenge in maintaining fair competition in sports, as it significantly enhances hemoglobin mass and oxygen capacity. In recognizing ABT as a prohibited form of doping, the World Anti-Doping Agency (WADA) mandates stringent detection methodologies. While current methods effectively identify homologous erythrocyte transfusions, a critical gap persists in detecting autologous transfusions. The gold standard practice of longitudinally monitoring hematological markers exhibits promise but is encumbered by limitations. Despite its potential, instances of blood doping often go undetected due to the absence of definitive verification processes. Moreover, some cases remain unpenalized due to conservative athlete-sanctioning approaches. This gap underscores the imperative need for a more reliable and comprehensive detection method capable of unequivocally differentiating autologous transfusions, addressing the challenges faced in accurately identifying such prohibited practices. The development of an advanced detection methodology is crucial to uphold the integrity of anti-doping measures, effectively identifying and penalizing instances of autologous blood transfusion. This, in turn, safeguards the fairness and equality essential to competitive sports. Our review tackles this critical gap by harnessing the potential of microRNAs in ABT doping detection. We aim to summarize alterations in the total microRNA profiles of erythrocyte concentrates during storage and explore the viability of observing these changes post-transfusion. This innovative approach opens avenues for anti-doping technologies and commercialization, positioning it as a cornerstone in the ongoing fight against doping in sports and beyond. The significance of developing a robust detection method cannot be overstated, as it ensures the credibility of anti-doping efforts and promotes a level playing field for all athletes.
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Nassiri SM, Ahmadi Afshar N, Almasi P. Insight into microRNAs' involvement in hematopoiesis: current standing point of findings. Stem Cell Res Ther 2023; 14:282. [PMID: 37794439 PMCID: PMC10552299 DOI: 10.1186/s13287-023-03504-3] [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: 12/28/2022] [Accepted: 09/20/2023] [Indexed: 10/06/2023] Open
Abstract
Hematopoiesis is a complex process in which hematopoietic stem cells are differentiated into all mature blood cells (red blood cells, white blood cells, and platelets). Different microRNAs (miRNAs) involve in several steps of this process. Indeed, miRNAs are small single-stranded non-coding RNA molecules, which control gene expression by translational inhibition and mRNA destabilization. Previous studies have revealed that increased or decreased expression of some of these miRNAs by targeting several proto-oncogenes could inhibit or stimulate the myeloid and erythroid lineage commitment, proliferation, and differentiation. During the last decades, the development of molecular and bioinformatics techniques has led to a comprehensive understanding of the role of various miRNAs in hematopoiesis. The critical roles of miRNAs in cell processes such as the cell cycle, apoptosis, and differentiation have been confirmed as well. However, the main contribution of some miRNAs is still unclear. Therefore, it seems undeniable that future studies are required to focus on miRNA activities during various hematopoietic stages and hematological malignancy.
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Affiliation(s)
- Seyed Mahdi Nassiri
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tehran, Qarib St., Azadi Ave, Tehran, Iran.
| | - Neda Ahmadi Afshar
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tehran, Qarib St., Azadi Ave, Tehran, Iran
| | - Parsa Almasi
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tehran, Qarib St., Azadi Ave, Tehran, Iran
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3
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Hatmal MM, Al-Hatamleh MAI, Olaimat AN, Alshaer W, Hasan H, Albakri KA, Alkhafaji E, Issa NN, Al-Holy MA, Abderrahman SM, Abdallah AM, Mohamud R. Immunomodulatory Properties of Human Breast Milk: MicroRNA Contents and Potential Epigenetic Effects. Biomedicines 2022; 10:biomedicines10061219. [PMID: 35740242 PMCID: PMC9219990 DOI: 10.3390/biomedicines10061219] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/15/2022] [Accepted: 05/17/2022] [Indexed: 02/07/2023] Open
Abstract
Infants who are exclusively breastfed in the first six months of age receive adequate nutrients, achieving optimal immune protection and growth. In addition to the known nutritional components of human breast milk (HBM), i.e., water, carbohydrates, fats and proteins, it is also a rich source of microRNAs, which impact epigenetic mechanisms. This comprehensive work presents an up-to-date overview of the immunomodulatory constituents of HBM, highlighting its content of circulating microRNAs. The epigenetic effects of HBM are discussed, especially those regulated by miRNAs. HBM contains more than 1400 microRNAs. The majority of these microRNAs originate from the lactating gland and are based on the remodeling of cells in the gland during breastfeeding. These miRNAs can affect epigenetic patterns by several mechanisms, including DNA methylation, histone modifications and RNA regulation, which could ultimately result in alterations in gene expressions. Therefore, the unique microRNA profile of HBM, including exosomal microRNAs, is implicated in the regulation of the genes responsible for a variety of immunological and physiological functions, such as FTO, INS, IGF1, NRF2, GLUT1 and FOXP3 genes. Hence, studying the HBM miRNA composition is important for improving the nutritional approaches for pregnancy and infant's early life and preventing diseases that could occur in the future. Interestingly, the composition of miRNAs in HBM is affected by multiple factors, including diet, environmental and genetic factors.
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Affiliation(s)
- Ma’mon M. Hatmal
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan;
- Correspondence: (M.M.H.); (R.M.)
| | - Mohammad A. I. Al-Hatamleh
- Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kota Bharu 16150, Malaysia;
| | - Amin N. Olaimat
- Department of Clinical Nutrition and Dietetics, Faculty of Applied Medical Sciences, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan; (A.N.O.); (M.A.A.-H.)
| | - Walhan Alshaer
- Cell Therapy Center (CTC), The University of Jordan, Amman 11942, Jordan;
| | - Hanan Hasan
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan;
| | - Khaled A. Albakri
- Faculty of Medicine, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan;
| | - Enas Alkhafaji
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman 11942, Jordan;
| | - Nada N. Issa
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan;
| | - Murad A. Al-Holy
- Department of Clinical Nutrition and Dietetics, Faculty of Applied Medical Sciences, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan; (A.N.O.); (M.A.A.-H.)
| | - Salim M. Abderrahman
- Department of Biology and Biotechnology, Faculty of Sciences, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan;
| | - Atiyeh M. Abdallah
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar;
| | - Rohimah Mohamud
- Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kota Bharu 16150, Malaysia;
- Correspondence: (M.M.H.); (R.M.)
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4
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Pant R, Alam A, Choksi A, Shah VK, Firmal P, Chattopadhyay S. Chromatin remodeling protein SMAR1 regulates adipogenesis by modulating the expression of PPARγ. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:159045. [PMID: 34450266 DOI: 10.1016/j.bbalip.2021.159045] [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: 02/19/2021] [Revised: 08/15/2021] [Accepted: 08/21/2021] [Indexed: 11/17/2022]
Abstract
Adipogenesis is described as the process of conversion of pre-adipocytes into differentiated lipid-laden adipocytes. Adipogenesis is known to be regulated by a myriad of transcription factors and co-regulators. However, there is a dearth of information regarding the mechanisms that regulate these transcription factors and hence control adipogenesis. PPARγ is the master transcriptional regulator of adipogenesis and its expression is essential for adipocyte differentiation. Herein, we identified that scaffold/matrix attachment region-binding protein 1 (SMAR1) negatively regulates adipogenesis. We observed that SMAR1 gets downregulated during adipocyte differentiation and knockdown of SMAR1 promotes lipid accumulation and adipocyte differentiation. Mechanistically, we have shown that SMAR1 suppresses PPARγ through recruitment of the HDAC1/mSin3a repressor complex to the PPARγ promoter. We further identified cell division cycle 20 (cdc20) mediated proteasomal degradation of SMAR1 during adipogenesis. Moreover, knockdown of cdc20 resulted in stabilization of SMAR1 and a reduction in adipocyte differentiation. Taken together, our observations suggest that SMAR1 functions as a negative regulator of adipogenesis by inhibiting PPARγ expression in differentiating adipocytes.
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Affiliation(s)
- Richa Pant
- National Centre for Cell Science, S P Pune University Campus, Ganeshkhind, Pune 411007, India.
| | - Aftab Alam
- National Centre for Cell Science, S P Pune University Campus, Ganeshkhind, Pune 411007, India; Roswell Park Comprehensive Cancer Center, Buffalo, NY 14203, United States of America
| | - Arpankumar Choksi
- National Centre for Cell Science, S P Pune University Campus, Ganeshkhind, Pune 411007, India
| | - Vibhuti Kumar Shah
- National Centre for Cell Science, S P Pune University Campus, Ganeshkhind, Pune 411007, India
| | - Priyanka Firmal
- National Centre for Cell Science, S P Pune University Campus, Ganeshkhind, Pune 411007, India
| | - Samit Chattopadhyay
- National Centre for Cell Science, S P Pune University Campus, Ganeshkhind, Pune 411007, India; Department of Biological Sciences, BITS Pilani, K. K. Birla Goa Campus, NH 17B, Zuarinagar, Goa 403726, India; Indian Institute of Chemical Biology; 4, Raja S C Mullick Road, Jadavpur, Kolkata 700032, India.
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5
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Fabro AT, Machado-Rugolo J, Baldavira CM, Prieto TG, Farhat C, Rotea ManGone FR, Batah SS, Cruvinel HR, Aldá MA, Monteiro JS, Pádua AI, Morais SS, Antônio de Oliveira R, Santos MK, Baddini-Martinez JA, Setubal JC, Rainho CA, Yoo HHB, Silva PL, Nagai MA, Capelozzi VL. Circulating Plasma miRNA and Clinical/Hemodynamic Characteristics Provide Additional Predictive Information About Acute Pulmonary Thromboembolism, Chronic Thromboembolic Pulmonary Hypertension and Idiopathic Pulmonary Hypertension. Front Pharmacol 2021; 12:648769. [PMID: 34122072 PMCID: PMC8194827 DOI: 10.3389/fphar.2021.648769] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
Idiopathic pulmonary artery hypertension (IPAH), chronic thromboembolic pulmonary hypertension (CTEPH), and acute pulmonary embolism (APTE) are life-threatening cardiopulmonary diseases without specific surgical or medical treatment. Although APTE, CTEPH and IPAH are different pulmonary vascular diseases in terms of clinical presentation, prevalence, pathophysiology and prognosis, the identification of their circulating microRNA (miRNAs) might help in recognizing differences in their outcome evolution and clinical forms. The aim of this study was to describe the APTE, CTEPH, and IPAH-associated miRNAs and to predict their target genes. The target genes of the key differentially expressed miRNAs were analyzed, and functional enrichment analyses were carried out. The miRNAs were detected using RT-PCR. Finally, we incorporated plasma circulating miRNAs in baseline and clinical characteristics of the patients to detect differences between APTE and CTEPH in time of evolution, and differences between CTEPH and IPAH in diseases form. We found five top circulating plasma miRNAs in common with APTE, CTEPH and IPAH assembled in one conglomerate. Among them, miR-let-7i-5p expression was upregulated in APTE and IPAH, while miRNA-320a was upregulated in CTEP and IPAH. The network construction for target genes showed 11 genes regulated by let-7i-5p and 20 genes regulated by miR-320a, all of them regulators of pulmonary arterial adventitial fibroblasts, pulmonary artery endothelial cell, and pulmonary artery smooth muscle cells. AR (androgen receptor), a target gene of hsa-let-7i-5p and has-miR-320a, was enriched in pathways in cancer, whereas PRKCA (Protein Kinase C Alpha), also a target gene of hsa-let-7i-5p and has-miR-320a, was enriched in KEGG pathways, such as pathways in cancer, glioma, and PI3K-Akt signaling pathway. We inferred that CTEPH might be the consequence of abnormal remodeling in APTE, while unbalance between the hyperproliferative and apoptosis-resistant phenotype of pulmonary arterial adventitial fibroblasts, pulmonary artery endothelial cell and pulmonary artery smooth muscle cells in pulmonary artery confer differences in IPAH and CTEPH diseases form. We concluded that the incorporation of plasma circulating let-7i-5p and miRNA-320a in baseline and clinical characteristics of the patients reinforces differences between APTE and CTEPH in outcome evolution, as well as differences between CTEPH and IPAH in diseases form.
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Affiliation(s)
- Alexandre Todorovic Fabro
- Department of Pathology, Laboratory of Histomorphometry and Lung Genomics, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.,Department of Pathology and Legal Medicine, Respiratory Medicine Laboratory, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Juliana Machado-Rugolo
- Department of Pathology, Laboratory of Histomorphometry and Lung Genomics, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.,Health Technology Assessment Center (NATS), Clinical Hospital (HCFMB), Medical School of São Paulo State University (UNESP), Botucatu, Brazil
| | - Camila Machado Baldavira
- Department of Pathology, Laboratory of Histomorphometry and Lung Genomics, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Tabatha Gutierrez Prieto
- Department of Pathology, Laboratory of Histomorphometry and Lung Genomics, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Cecília Farhat
- Department of Pathology, Laboratory of Histomorphometry and Lung Genomics, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Flavia Regina Rotea ManGone
- Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of São Paulo (ICESP), São Paulo, Brazil
| | - Sabrina Setembre Batah
- Department of Pathology and Legal Medicine, Respiratory Medicine Laboratory, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Heloísa Resende Cruvinel
- Department of Pathology and Legal Medicine, Respiratory Medicine Laboratory, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Maiara Almeida Aldá
- Department of Pathology and Legal Medicine, Respiratory Medicine Laboratory, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Jhonatas Sirino Monteiro
- Bioinformatic Laboratory, Institute of Chemistry, University of São Paulo (USP), São Paulo, Brazil
| | - Adriana Inacio Pádua
- Pulmonary Hypertension Care Center, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Sirlei Siani Morais
- Department of Pathology and Legal Medicine, Respiratory Medicine Laboratory, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Rogério Antônio de Oliveira
- Department of Biostatistics, Plant Biology, Parasitology and Zoology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, Brazil
| | - Marcel Koenigkam Santos
- Pulmonary Hypertension Care Center, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - José Antônio Baddini-Martinez
- Pulmonary Hypertension Care Center, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - João Carlos Setubal
- Bioinformatic Laboratory, Institute of Chemistry, University of São Paulo (USP), São Paulo, Brazil
| | - Claudia Aparecida Rainho
- Department of Chemical and Biological Sciences, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, Brazil
| | - Hugo Hyung Bok Yoo
- Pulmonary Hypertension Care Center, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | - Pedro Leme Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil
| | - Maria Aparecida Nagai
- Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of São Paulo (ICESP), São Paulo, Brazil.,Department of Radiology and Oncology, Medical School of São Paulo State University (UNESP), São Paulo, Brazil
| | - Vera Luiza Capelozzi
- Department of Pathology, Laboratory of Histomorphometry and Lung Genomics, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
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Veryaskina YA, Titov SE, Kovynev IB, Fedorova SS, Pospelova TI, Zhimulev IF. MicroRNAs in the Myelodysplastic Syndrome. Acta Naturae 2021; 13:4-15. [PMID: 34377552 PMCID: PMC8327150 DOI: 10.32607/actanaturae.11209] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/15/2020] [Indexed: 12/20/2022] Open
Abstract
The myelodysplastic syndrome (MDS) holds a special place among blood cancers, as it represents a whole spectrum of hematological disorders with impaired differentiation of hematopoietic precursors, bone marrow dysplasia, genetic instability and is noted for an increased risk of acute myeloid leukemia. Both genetic and epigenetic factors, including microRNAs (miRNAs), are involved in MDS development. MicroRNAs are short non-coding RNAs that are important regulators of normal hematopoiesis, and abnormal changes in their expression levels can contribute to hematological tumor development. To assess the prognosis of the disease, an international assessment system taking into account a karyotype, the number of blast cells, and the degree of deficiency of different blood cell types is used. However, the overall survival and effectiveness of the therapy offered are not always consistent with predictions. The search for new biomarkers, followed by their integration into the existing prognostic system, will allow for personalized treatment to be performed with more precision. Additionally, this paper explains how miRNA expression levels correlate with the prognosis of overall survival and response to the therapy offered.
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Affiliation(s)
- Y. A. Veryaskina
- Institute of Cytology and Genetics, SB RAS, Novosibirsk, 630090 Russia
- Institute of Molecular and Cellular Biology, SB RAS, Novosibirsk, 630090 Russia
| | - S. E. Titov
- Institute of Molecular and Cellular Biology, SB RAS, Novosibirsk, 630090 Russia
- Vector-Best, Novosibirsk, 630117 Russia
| | - I. B. Kovynev
- Novosibirsk State Medical University, Novosibirsk, 630091 Russia
| | - S. S. Fedorova
- Novosibirsk State Medical University, Novosibirsk, 630091 Russia
| | - T. I. Pospelova
- Novosibirsk State Medical University, Novosibirsk, 630091 Russia
| | - I. F. Zhimulev
- Institute of Molecular and Cellular Biology, SB RAS, Novosibirsk, 630090 Russia
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7
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Mussack V, Wittmann G, Pfaffl MW. On the trail of blood doping-microRNA fingerprints to monitor autologous blood transfusions in vivo. Am J Hematol 2021; 96:338-353. [PMID: 33326140 DOI: 10.1002/ajh.26078] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 12/15/2022]
Abstract
Autologous blood doping refers to the illegal re-transfusion of any quantities of blood or blood components with blood donor and recipient being the same person. The re-transfusion of stored erythrocyte concentrates is particularly attractive to high-performance athletes as this practice improves their oxygen capacity excessively. However, there is still no reliable detection method available. Analyzing circulating microRNA profiles of human subjects that underwent monitored autologous blood transfusions seems to be a highly promising approach to develop novel biomarkers for autologous blood doping. In this exploratory study, we randomly divided 30 healthy males into two different treatment groups and one control group and sampled whole blood at several time points at baseline, after whole blood donation and after transfusion of erythrocyte concentrates. Hematological variables were recorded and analyzed following the adaptive model of the Athlete Biological Passport. microRNA profiles were examined by small RNA sequencing and comprehensive multivariate data analyses, revealing microRNA fingerprints that reflect the sampling time point and transfusion volume. Neither individual microRNAs nor a signature of transfusion-dependent microRNAs reached superior sensitivity at 100% specificity compared to the Athlete Biological Passport (≤11% 6 h after transfusion versus ≤44% 2 days after transfusion). However, the window of autologous blood doping detection was different. Due to the heterogenous nature of doping, with athletes frequently combining multiple medications in order to both gain a competitive advantage and interfere with known testing methods, the true applicability of the molecular signature remains to be validated in real anti-doping testings.
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Affiliation(s)
- Veronika Mussack
- Animal Physiology and Immunology School of Life Sciences Weihenstephan, Technical University of Munich Freising Germany
| | - Georg Wittmann
- Department for Transfusion Medicine, Cell therapeutics and Haemostaseology University Hospital LMU Munich Germany
| | - Michael W. Pfaffl
- Animal Physiology and Immunology School of Life Sciences Weihenstephan, Technical University of Munich Freising Germany
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8
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Identification of miR-320 family members as potential diagnostic and prognostic biomarkers in myelodysplastic syndromes. Sci Rep 2021; 11:183. [PMID: 33420276 PMCID: PMC7794569 DOI: 10.1038/s41598-020-80571-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/23/2020] [Indexed: 12/15/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are characterized by ineffective hematopoiesis and the abnormal differentiation of hematopoietic stem cells. An increasing number of researches have demonstrated that microRNAs play crucial roles in the pathogenesis of myelodysplastic syndromes. Herein, we aimed to identify novel potential microRNAs bound up with the diagnosis and prognosis of MDS. MiRNA microarray analysis was used to screen deregulated microRNAs in the bone marrow of MDS patients. qRT-PCR was employed to confirm the microarray results. All members of miR-320 family (miR-320a, miR-320b, miR-320c, miR-320d, and miR-320e) were significantly increased in MDS patients compared to normal control. Although we found no correlation between miR-320 family and most clinical characteristics, high miR-320c and miR-320d expression seemed to be associated with high numbers of bone marrow (BM) blasts and worse karyotype. High expression of all the members of the miR-320 family seemed to be associated with a high prognostic score based on International Prognostic Scoring System (IPSS). The areas under the miR-320 family member ROC curves were 0.9037 (P < 0.0001), 0.7515 (P = 0.0002), 0.9647 (P < 0.0001), 0.8064 (P < 0.0001) and 0.9019 (P < 0.0001). Regarding Kaplan-Meier analysis, high miR-320c and miR-320d expression were related to shorter overall survival (OS). Moreover, multivariate analysis revealed the independent prognostic value of miR-320d for OS in MDS. The expression of miR-320 family members was up-regulated in MDS, and miR-320 family members could serve as candidate diagnostic biomarkers for MDS. High expression of miR-320d was an independent prognostic factor for OS in MDS.
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9
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Mittal S, Inamdar S, Acharya J, Pekhale K, Kalamkar S, Boppana R, Ghaskadbi S. miR-3666 inhibits development of hepatic steatosis by negatively regulating PPARγ. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158777. [PMID: 32755726 DOI: 10.1016/j.bbalip.2020.158777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 07/13/2020] [Accepted: 07/25/2020] [Indexed: 01/07/2023]
Abstract
AIMS PPARγ is a crucial transcription factor involved in development of hepatic steatosis, an early stage of NAFLD. PPARγ is tightly regulated through various positive and negative regulators including miRNAs. In this study, we report for the first time miR-3666 as a negative regulator of PPARγ and its involvement in development of hepatic steatosis. METHODS Binding of miR-3666 to regulate PPARγ was checked by luciferase assay and was confirmed by mutating PPARγ 3'UTR. Regulation of PPARγ was determined by overexpression of miR-3666 in HepG2 cells. Hepatic steatotic state in HepG2 cells was developed by exposure to excess palmitic acid and expression of PPARγ, miR-3666 and some PPARγ target and non-target genes was checked. Involvement of mir-3666 by regulating PPARγ in hepatic steatosis was also examined in liver of HFD fed mice. RESULTS On overexpression of miR-3666, PPARγ expression decreased significantly in a dose-dependent manner in HepG2 cells. Binding of miR-3666 to PPARγ was confirmed as the luciferase activity using pMIR-REPORT with PPARγ 3'UTR decreased in PA treated HepG2 cells overexpressing miR-3666 and remained unchanged when PPARγ 3'UTR was mutated. In PA treated HepG2 cells during development of hepatic steatosis PPARγ was significantly up-regulated concomitant with down-regulation of miR-3666. Overexpression of miR-3666 in these cells decreased the extent of hepatic steatosis. Significant up-regulation of PPARγ and down-regulation of miR-3666 was also observed in liver of HFD fed mice indicating that miR-3666 regulates PPARγ in vivo. CONCLUSIONS miR-3666 negatively regulates PPARγ by binding to its 3'UTR during development of hepatic steatosis.
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Affiliation(s)
- Smriti Mittal
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, India
| | - Shrirang Inamdar
- Department of Zoology, Savitribai Phule Pune University, Pune 411007, India
| | - Jhankar Acharya
- Department of Zoology, Savitribai Phule Pune University, Pune 411007, India
| | - Komal Pekhale
- Department of Zoology, Savitribai Phule Pune University, Pune 411007, India
| | - Saurabh Kalamkar
- Department of Zoology, Savitribai Phule Pune University, Pune 411007, India
| | | | - Saroj Ghaskadbi
- Department of Zoology, Savitribai Phule Pune University, Pune 411007, India.
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10
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Narwade N, Patel S, Alam A, Chattopadhyay S, Mittal S, Kulkarni A. Mapping of scaffold/matrix attachment regions in human genome: a data mining exercise. Nucleic Acids Res 2019; 47:7247-7261. [PMID: 31265077 PMCID: PMC6698742 DOI: 10.1093/nar/gkz562] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/08/2019] [Accepted: 06/27/2019] [Indexed: 11/14/2022] Open
Abstract
Scaffold/matrix attachment regions (S/MARs) are DNA elements that serve to compartmentalize the chromatin into structural and functional domains. These elements are involved in control of gene expression which governs the phenotype and also plays role in disease biology. Therefore, genome-wide understanding of these elements holds great therapeutic promise. Several attempts have been made toward identification of S/MARs in genomes of various organisms including human. However, a comprehensive genome-wide map of human S/MARs is yet not available. Toward this objective, ChIP-Seq data of 14 S/MAR binding proteins were analyzed and the binding site coordinates of these proteins were used to prepare a non-redundant S/MAR dataset of human genome. Along with co-ordinate (location) details of S/MARs, the dataset also revealed details of S/MAR features, namely, length, inter-SMAR length (the chromatin loop size), nucleotide repeats, motif abundance, chromosomal distribution and genomic context. S/MARs identified in present study and their subsequent analysis also suggests that these elements act as hotspots for integration of retroviruses. Therefore, these data will help toward better understanding of genome functioning and designing effective anti-viral therapeutics. In order to facilitate user friendly browsing and retrieval of the data obtained in present study, a web interface, MARome (http://bioinfo.net.in/MARome), has been developed.
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Affiliation(s)
- Nitin Narwade
- Bioinformatics Centre, Savitribai Phule Pune University, Pune - 411 007, Maharashtra, India
| | - Sonal Patel
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Pune - 411 007, Maharashtra, India
| | - Aftab Alam
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Pune - 411 007, Maharashtra, India
| | - Samit Chattopadhyay
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Pune - 411 007, Maharashtra, India.,Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata - 700 032, West Bengal, India
| | - Smriti Mittal
- Department of Biotechnology, Savitribai Phule Pune University, Pune - 411 007, Maharashtra, India
| | - Abhijeet Kulkarni
- Bioinformatics Centre, Savitribai Phule Pune University, Pune - 411 007, Maharashtra, India
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11
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Jafari M, Ghadami E, Dadkhah T, Akhavan-Niaki H. PI3k/AKT signaling pathway: Erythropoiesis and beyond. J Cell Physiol 2018; 234:2373-2385. [PMID: 30192008 DOI: 10.1002/jcp.27262] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 07/24/2018] [Indexed: 12/20/2022]
Abstract
Erythropoiesis is a multi-step process that involves the differentiation of hematopoietic stem cells into mature red blood cells (RBCs). This process is regulated by several signaling pathways, transcription factors and microRNAs (miRNAs). Many studies have shown that dysregulation of this process can lead to hematologic disorders. PI3K/AKT is one of the most important pathways that control many cellular processes including, cell division, autophagy, survival, and differentiation. In this review, we focus on the role of PI3K/AKT pathway in erythropoiesis and discuss the function of some of the most important genes, transcription factors, and miRNAs that regulate different stages of erythropoiesis which play roles in differentiation and maturation of RBCs, prevention of apoptosis, and autophagy induction. Understanding the role of the PI3K pathway in erythropoiesis may provide new insights into diagnosing erythrocyte disorders.
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Affiliation(s)
- Mahjoobeh Jafari
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Elham Ghadami
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Tahereh Dadkhah
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Haleh Akhavan-Niaki
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
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12
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Unraveling the determinants of microRNA mediated regulation using a massively parallel reporter assay. Nat Commun 2018; 9:529. [PMID: 29410437 PMCID: PMC5802814 DOI: 10.1038/s41467-018-02980-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 01/11/2018] [Indexed: 12/16/2022] Open
Abstract
Despite extensive research, the sequence features affecting microRNA-mediated regulation are not well understood, limiting our ability to predict gene expression levels in both native and synthetic sequences. Here we employed a massively parallel reporter assay to investigate the effect of over 14,000 rationally designed 3′ UTR sequences on reporter construct repression. We found that multiple factors, including microRNA identity, hybridization energy, target accessibility, and target multiplicity, can be manipulated to achieve a predictable, up to 57-fold, change in protein repression. Moreover, we predict protein repression and RNA levels with high accuracy (R = 0.84 and R = 0.80, respectively) using only 3′ UTR sequence, as well as the effect of mutation in native 3′ UTRs on protein repression (R = 0.63). Taken together, our results elucidate the effect of different sequence features on miRNA-mediated regulation and demonstrate the predictability of their effect on gene expression with applications in regulatory genomics and synthetic biology. MiRNAs are known regulators of gene expression. Here the authors perform a large-scale massively parallel reporter assay to investigate the effect of a large number of designed 3′ UTR sequences on reporter expression and asses how miRNA regulatory elements features affect miRNA mediated repression.
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13
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Mittal SP, Khole S, Jagadish N, Ghosh D, Gadgil V, Sinkar V, Ghaskadbi SS. Andrographolide protects liver cells from H2O2 induced cell death by upregulation of Nrf-2/HO-1 mediated via adenosine A2a receptor signalling. Biochim Biophys Acta Gen Subj 2016; 1860:2377-2390. [DOI: 10.1016/j.bbagen.2016.07.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 07/01/2016] [Accepted: 07/07/2016] [Indexed: 12/25/2022]
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14
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Zhou L, Jiang F, Chen X, Liu Z, Ouyang Y, Zhao W, Yu D. Downregulation of miR-221/222 by a microRNA sponge promotes apoptosis in oral squamous cell carcinoma cells through upregulation of PTEN. Oncol Lett 2016; 12:4419-4426. [PMID: 28101204 PMCID: PMC5228168 DOI: 10.3892/ol.2016.5250] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/02/2016] [Indexed: 12/18/2022] Open
Abstract
MicroRNA-221 and microRNA-222 (miR-221/222) have been identified as oncogenes and confirmed to be overexpressed in various types of cancer. However, the regulation mechanism of miR-221/222 in oral squamous cell carcinoma (OSCC) remains to be fully elucidated. Previously, an miR-221/222 sponge was successfully constructed and its effect on the downregulation of miR-221/222 expression was investigated. In the present study, the dual luciferase reporter assay revealed a phosphatase and tensin homolog (PTEN) deletion on chromosome 10 to be a target gene of miR-221/222. It was also demonstrated that miR-221/222 suppression by transfection with an miR-221/222 sponge in vitro resulted in upregulation of PTEN. Notably, the proliferation and invasiveness of the miR-221/222 sponge-transfected cells was significantly inhibited, while apoptosis was promoted, when determined by Cell Counting Kit-8, Transwell assays and flow cytometry. The results of the present study prove that miR-221/222 may downregulate the expression of PTEN in OSCC cells and function as oncogenes, providing a novel insight into the underlying mechanism of OSCC tumorigenesis. The present study suggests that upregulating the expression of PTEN by downregulation of miR-221/222 may be a potential treatment for OSCC.
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Affiliation(s)
- Lijie Zhou
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China; Department of Stomatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Fangfang Jiang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Xijuan Chen
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Zifeng Liu
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Ying Ouyang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Wei Zhao
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Dongsheng Yu
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
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15
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Mathai J, Mittal SPK, Alam A, Ranade P, Mogare D, Patel S, Saxena S, Ghorai S, Kulkarni AP, Chattopadhyay S. SMAR1 binds to T(C/G) repeat and inhibits tumor progression by regulating miR-371-373 cluster. Sci Rep 2016; 6:33779. [PMID: 27671416 PMCID: PMC5037395 DOI: 10.1038/srep33779] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 08/18/2016] [Indexed: 12/19/2022] Open
Abstract
Chromatin architecture and dynamics are regulated by various histone and non-histone proteins. The matrix attachment region binding proteins (MARBPs) play a central role in chromatin organization and function through numerous regulatory proteins. In the present study, we demonstrate that nuclear matrix protein SMAR1 orchestrates global gene regulation as determined by massively parallel ChIP-sequencing. The study revealed that SMAR1 binds to T(C/G) repeat and targets genes involved in diverse biological pathways. We observe that SMAR1 binds and targets distinctly different genes based on the availability of p53. Our data suggest that SMAR1 binds and regulates one of the imperative microRNA clusters in cancer and metastasis, miR-371-373. It negatively regulates miR-371-373 transcription as confirmed by SMAR1 overexpression and knockdown studies. Further, deletion studies indicate that a ~200 bp region in the miR-371-373 promoter is necessary for SMAR1 binding and transcriptional repression. Recruitment of HDAC1/mSin3A complex by SMAR1, concomitant with alteration of histone marks results in downregulation of the miRNA cluster. The regulation of miR-371-373 by SMAR1 inhibits breast cancer tumorigenesis and metastasis as determined by in vivo experiments. Overall, our study highlights the binding of SMAR1 to T(C/G) repeat and its role in cancer through miR-371-373.
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Affiliation(s)
- Jinumary Mathai
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
| | - Smriti P K Mittal
- Department of Zoology, Savitribai Phule Pune University Campus, Pune 411007, India
| | - Aftab Alam
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
| | - Payal Ranade
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
| | - Devraj Mogare
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
| | - Sonal Patel
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
| | - Smita Saxena
- Bioinformatics Centre, Savitribai Phule Pune University Campus, Pune 411007, India
| | - Suvankar Ghorai
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
| | - Abhijeet P Kulkarni
- Bioinformatics Centre, Savitribai Phule Pune University Campus, Pune 411007, India
| | - Samit Chattopadhyay
- Chromatin and Disease Biology Lab, National Centre for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune-411007, India
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Liu H, Wang X, Liu S, Li H, Yuan X, Feng B, Bai H, Zhao B, Chu Y, Li H. Effects and mechanism of miR-23b on glucose-mediated epithelial-to-mesenchymal transition in diabetic nephropathy. Int J Biochem Cell Biol 2015; 70:149-60. [PMID: 26646104 DOI: 10.1016/j.biocel.2015.11.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 11/23/2015] [Accepted: 11/26/2015] [Indexed: 01/06/2023]
Abstract
MicroRNAs (miRNAs) play important roles in epithelial-to-mesenchymal transition (EMT). Moreover, hyperglycaemia induces damage to renal tubular epithelial cells, which may lead to EMT in diabetic nephropathy. However, the effects of miRNAs on EMT in diabetic nephropathy are poorly understood. In the present study, we found that the level of microRNA-23b (miR-23b) was significantly decreased in high glucose (HG)-induced human kidney proximal tubular epithelial cells (HK2) and in kidney tissues of db/db mice. Overexpression of miR-23b attenuated HG-induced EMT, whereas knockdown of miR-23b induced normal glucose (NG)-mediated EMT in HK2 cells. Mechanistically, miR-23b suppressed EMT in diabetic nephropathy by targeting high mobility group A2 (HMGA2), thereby repressing PI3K-AKT signalling pathway activation. Additionally, HMGA2 knockdown or inhibition of the PI3K-AKT signalling pathway with LY294002 mimicked the effects of miR-23b overexpression on HG-mediated EMT, whereas HMGA2 overexpression or activation of the PI3K-AKT signalling pathway with BpV prevented the effects of miR-23b on HG-mediated EMT. We also confirmed that overexpression of miR-23b alleviated EMT, decreased the expression levels of EMT-related genes, ameliorated renal morphology, glycogen accumulation, fibrotic responses and improved renal functions in db/db mice. Taken together, we showed for the first time that miR-23b acts as a suppressor of EMT in diabetic nephropathy through repressing PI3K-AKT signalling pathway activation by targeting HMGA2, which maybe a potential therapeutic target for diabetes-induced renal dysfunction.
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Affiliation(s)
- Haifeng Liu
- Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong 510632, PR China; Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China
| | - Xiaohua Wang
- Laboratory of Pathogenic Microbiology and Immunology, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China
| | - Shengfeng Liu
- Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Hongzhi Li
- Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China
| | - Xiaohuan Yuan
- Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China
| | - Biao Feng
- Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China
| | - He Bai
- Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China
| | - Binghai Zhao
- Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China.
| | - Yanhui Chu
- Heilongjiang Province Key Laboratory for Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, PR China.
| | - Hongjian Li
- Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, Guangdong 510632, PR China.
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Choi JS, Nam MH, Yoon SY, Kang SH. MicroRNA-194-5p could serve as a diagnostic and prognostic biomarker in myelodysplastic syndromes. Leuk Res 2015; 39:763-8. [PMID: 25975751 DOI: 10.1016/j.leukres.2015.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/26/2015] [Accepted: 04/19/2015] [Indexed: 12/12/2022]
Abstract
Trisomy 8 and trisomy 1q are the most frequent chromosomal abnormalities in Korean patients with myelodysplastic syndrome (MDS). MicroRNA (miRNA) deregulation is involved in the development of hematological malignancies, including MDS, and cancer-associated genomic regions are known to encode miRNAs. The aim of the present study was to investigate the involvement of miRNAs encoded by chromosomes 8 and 1q in MDS. For this, the expression of nine miRNAs encoded by chromosome 8 (miR-30b-5p, miR-30d-5p, miR-101-3p, miR-124-3p, miR-151a-5p, miR-320a, miR-486-5p, miR-596, and miR-875-5p) and three miRNAs encoded by chromosome 1q (miR-29c-3p, miR-194-5p, and miR-214-3p) was compared between 65 MDS patients and 11 controls. We found a significant upregulation of miR-194-5p (5.1-fold, P=0.002) and miR-320a (2.94-fold, P=0.016) in MDS patients compared with controls. The patients with low miR-194-5p expression showed a significantly decreased overall survival (P=0.049). The areas under the miR-194-5p and miR-320a ROC curves were 0.797 (P=0.002) and 0.729 (P=0.016), respectively. Although these findings need to be validated in a larger patient population, our results indicate that miR-194-5p is a candidate diagnostic biomarker for MDS and that low miR-194-5p expression could be associated with poor overall survival for MDS patients.
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Affiliation(s)
- Ji-Seon Choi
- Department of Laboratory Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Myung-Hyun Nam
- Department of Laboratory Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Soo-Young Yoon
- Department of Laboratory Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Seong-Ho Kang
- Department of Laboratory Medicine, Chosun University College of Medicine, Gwangju, South Korea.
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Karnati HK, Raghuwanshi S, Sarvothaman S, Gutti U, Saladi RGV, Komati JK, Tummala PR, Gutti RK. microRNAs: Key Players in Hematopoiesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 887:171-211. [DOI: 10.1007/978-3-319-22380-3_10] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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