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Begić V, Sertić Perić M, Hančić S, Marchiotti I, Gabud T, Šestak Panižić I, Radanović I, Korać P. Effectiveness of five different solutions for preserving aquatic insects commonly used in morphological and stream ecology studies. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01298-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Matulić M, Gršković P, Petrović A, Begić V, Harabajsa S, Korać P. miRNA in Molecular Diagnostics. Bioengineering (Basel) 2022; 9:bioengineering9090459. [PMID: 36135005 PMCID: PMC9495386 DOI: 10.3390/bioengineering9090459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/05/2022] [Accepted: 09/07/2022] [Indexed: 11/17/2022] Open
Abstract
MicroRNAs are a class of small non-coding RNA molecules that regulate gene expression on post-transcriptional level. Their biogenesis consists of a complex series of sequential processes, and they regulate expression of many genes involved in all cellular processes. Their function is essential for maintaining the homeostasis of a single cell; therefore, their aberrant expression contributes to development and progression of many diseases, especially malignant tumors and viral infections. Moreover, they can be associated with certain states of a specific disease, obtained in the least invasive manner for patients and analyzed with basic molecular methods used in clinical laboratories. Because of this, they have a promising potential to become very useful biomarkers and potential tools in personalized medicine approaches. In this review, miRNAs biogenesis, significance in cancer and infectious diseases, and current available test and methods for their detection are summarized.
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Affiliation(s)
- Maja Matulić
- Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - Paula Gršković
- Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - Andreja Petrović
- Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Institute of Clinical Pathology and Cytology, Merkur University Hospital, 10000 Zagreb, Croatia
| | - Valerija Begić
- Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Primary School “Sesvetski Kraljevec”, 10361 Sesvetski Kraljevec, Croatia
| | - Suzana Harabajsa
- Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Department of Pathology and Cytology, Division of Pulmonary Cytology Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Petra Korać
- Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Correspondence: ; Tel.: +385-1-4606-278
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Harabajsa S, Begić V, Gršković P, Šimić V, Branica BV, Badovinac S, Smojver-Ježek S, Korać P. Influence of deep-freezing and MGG staining on DNA and RNA quality in different types of lung adenocarcinoma cytological smears. Diagn Cytopathol 2021; 49:1244-1250. [PMID: 34698443 DOI: 10.1002/dc.24896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 09/20/2021] [Accepted: 10/18/2021] [Indexed: 11/11/2022]
Abstract
BACKGROUND Preserving the optimal quality of DNA and RNA is mandatory for molecular testing in lung adenocarcinoma cytological smears (LACSs). METHODS DNA and RNA were isolated from 90 frozen unstained and 46 May Grünwald Giemsa (MGG) stained LACSs prepared from bronchial washing (BW), bronchial brushing (BB), and pleural effusion (PE) samples during 3 years. Concentrations of nucleic acids in all LACSs were assessed by spectrophotometric analysis. Fragmentation of DNA and RNA was determined by PCR amplification of selected genes. Amplicons of 100, 200, 300, 400, and 600 bp were used for DNA and 108 bp-long HPRT1 transcript fragment for RNA fragmentation analysis. RESULTS Among 90 frozen LACSs, significantly lower DNA concentrations of BB and RNA concentrations of BW samples frozen for 6-10 months were observed in comparison with samples frozen for longer periods (p < .05). Among 46 paired LACSs, 44 (95.7%) frozen and 15 (32.6%) MGG-stained samples showed 600 bp-long DNA amplicons. Statistically significant difference (p < .05) in the fragmentation of DNA between frozen and MGG-stained LACSs was observed (p < .05), with DNA being less fragmented in frozen LACSs. In addition, 33 (71.7%) frozen and 36 (78.2%) MGG-stained LASCs showed HPRT1 gene amplicon of 108 bp. RNA was less fragmented in 3-year old MGG-stained samples than in LACSs frozen for 3 years. CONCLUSION DNA and RNA extracted from frozen and MGG-stained LACSs showed different results depending on the time of storage and/or type of samples, but in general all samples had adequate quantity and quality for downstream molecular testing.
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Affiliation(s)
- Suzana Harabajsa
- Department of Pathology and Cytology, Division of Pulmonary Cytology Jordanovac, University Hospital Centre Zagreb, Zagreb, Croatia.,Department for Biology, Division of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Valerija Begić
- Department for Biology, Division of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia.,Primary School "Sesvetski Kraljevec", Sesvetski Kraljevec, Croatia
| | - Paula Gršković
- Department for Biology, Division of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Vesna Šimić
- Department of Pathology and Cytology, Division of Pulmonary Cytology Jordanovac, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Božica Vrabec Branica
- Department of Pathology and Cytology, Division of Pulmonary Cytology Jordanovac, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Sonja Badovinac
- Department of Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Silvana Smojver-Ježek
- Department of Pathology and Cytology, Division of Pulmonary Cytology Jordanovac, University Hospital Centre Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Petra Korać
- Department for Biology, Division of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
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