Abstract:
OBJECTIVE:Cell-free circular RNAs (circRNAs) are stable and abundantly exist in body fluids. In this study, we aimed to investigate plasma cell-free circRNAs as a novel class of biomarkers for the diagnosis of breast cancer (BC). METHODS:Differentially expressed circRNAs from 6 normal and 6 BC plasma samples were detected by microarray. Hsa_circ_0008673 was then screened and validated in the plasma of 102 normal and 378 BC samples. A receiver operating characteristic (ROC) curve was used to evaluate the diagnostic value. The correlations between hsa_circ_0008673 expression and demographic characteristics, tumor features, and prognosis were analyzed. The effects of hsa_circ_0008673 on BC cell proliferation and metastasis were also measured. RESULTS:Of the top ten up-regulated (hsa_circ_0008673, hsa_circ_0008500, hsa_circ_0005260, hsa_circ_0003423, hsa_circ_0119881, hsa_circ_0000987, hsa_circ_0007386, hsa_circ_0000091, hsa_circ_0016601, and hsa_circ_0008549) and top ten down-regulated (hsa_circ_0000826, hsa_circ_0072697, hsa_circ_0004587, hsa_circ_0000471, hsa_circ_0007786, hsa_circ_0001417, hsa_circ_0005982, hsa_circ_0001566, hsa_circ_0003823, and hsa_circ_0003823) circRNAs from microarray, hsa_circ_0008673 was the most significantly up-regulated circRNA in BC, and represented a good diagnostic value. Hsa_circ_0008673 was remarkably down-regulated after breast mastectomy. Hsa_circ_0008673 expression was associated with larger tumor size, distant metastasis, positive estrogen receptor (ER) status, and positive progesterone receptor (PR) status. Additionally, hsa_circ_0008673 could serve as a prognostic predicator of overall survival (OS) and disease-specific survival (DSS). Cell assays proved that hsa_circ_0008673 knockdown contributed to inhibition of tumor cell proliferation and migration. CONCLUSION:Plasma cell-free hsa_circ_0008673 was up-regulated in BC, which was associated with poorer prognosis and promoted tumor proliferation and metastasis. Hsa_circ_0008673 is a promising biomarker for tumor diagnosis and prognostic assessment of BC patients.
journal_name
J Clin Lab Analjournal_title
Journal of clinical laboratory analysisauthors
Hu Y,Song Q,Zhao J,Ruan J,He F,Yang X,Yu Xdoi
10.1002/jcla.23393subject
Has Abstractpub_date
2020-09-01 00:00:00pages
e23393issue
9eissn
0887-8013issn
1098-2825journal_volume
34pub_type
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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abstract:BACKGROUND:Circular RNAs (circRNAs) are emerging noncoding RNAs that are involved in many biological processes and diseases. The expression profile of circRNAs in preterm neonates with bronchopulmonary dysplasia (BPD) remains unresolved. METHODS:In BPD infants, peripheral venous blood was drawn and circRNAs were extra...
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pub_type: 杂志文章
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journal_title:Journal of clinical laboratory analysis
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doi:
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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更新日期:1999-01-01 00:00:00
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journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
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