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Prognostic value of mature MicroRNA-21 and MicroRNA-205 overexpression in non-small cell lung cancer by quantitative real-time RT-PCR
Open accessAbstract
Background: microRNA (miRNA) expression profiles are being intensively investigated for their involvement in carcinogenesis. We evaluated the prognostic value of mature microRNA-21 (miR-21) and mature microRNA-205 (miR-205) overexpression in non–small cell lung cancer (NSCLC). Patients and methods: We studied 48 pairs of NSCLC fresh frozen tissue specimens collected at time of surgery and before chemotherapy. Highly specific amplification and quantification of mature miR-21 and mature miR-205 was achieved using looped real time RT-PCR. Results: miRNA expression, determined by real time RT-PCR, was defined by ΔΔCt measurements. We detected overexpression of mature miR-21 in 25 (52.0%) of the 48 NSCLC paired specimens and overexpression of miR-205 in 31 (64.6%). Overexpression was assessed after comparison of miRNA expression in NSCLC tissues and in their corresponding noncancerous tissues with respect to U6 expression. During the follow-up period, 29 of 48 (60.4%) patients relapsed, and 23 of 48 died (47.9%). Mature miR-21 was upregulated in 16 of 29 (55.2%) patients who relapsed and 15 of 23 (65.2%) patients who died. Mature miR-205 was overexpressed in 19 of 29 patients who relapsed (65.5%) and 15 of 23 patients who died (65.2%). Mature miR-21 overexpression correlated with overall survival (OS) of the patients (P = 0.027), whereas overexpression of mature miR-205 did not. Conclusions: Our results suggest that overexpression of mature miR-21 is an independent negative prognostic factor for OS in NSCLC patients.
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“Recently, miR-21 expression levels have proven useful prognostic markers in non-small cell lung cancer (Markou et al., 2008; Yanaihara et al., 2006).”
From Modulation of K-Ras-Dependent Lung Tumorigenesis by MicroRNA-21 (2010) · cites this paper as Markou et al., 2008
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Metadata
- Authors
- Markou, A., Tsaroucha, E. G., Kaklamanis, L., Fotinou, M., Georgoulias, V., & Lianidou, E. S.
- Affiliations
- National and Kapodistrian University of Athens (GR)
- Sotiria General Hospital (GR)
- Onassis Cardiac Surgery Center (GR)
- University of Crete (GR)
- Corresponding author
- Lianidou, Evi S
- Venue
- Clinical Chemistry
- Publisher
- Oxford University Press (OUP)
- Published
- 2008-10-01
- Volume
- 54
- Issue
- 10
- Pages
- 1696-1704
- ISSN
- 0009-9147 (ISSN-L)
- 1530-8561
- OpenAlex
- W2154551754
- Cited by
- 441
- References
- 39
- Citations by year
- 2026: 4 · 2025: 5 · 2024: 6 · 2023: 9 · 2022: 14 · 2021: 16 · 2020: 21 · 2019: 21 · 2018: 18 · 2017: 31 · 2016: 26 · 2015: 34 · 2014: 42 · 2013: 33 · 2012: 51
- FWCI
- 12.41
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
- Locations
- Clinical Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National and Kapodistrian University of Athens
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
- Health Sciences › Medicine › Oncology › Lung Cancer Research Studies
- Keywords
- miR-21, microRNA-205, non-small cell lung cancer, prognostic factors, microRNA overexpression, overall survival, tumor recurrence, microRNA quantification
- MeSH terms
- Carcinoma, Non-Small-Cell Lung, Humans, Lung Neoplasms, Prognosis, Multivariate Analysis, Survival Analysis, Reverse Transcriptase Polymerase Chain Reaction, MicroRNAs
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