Journal
PATHOLOGY RESEARCH AND PRACTICE
Volume 236, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.prp.2022.154009
Keywords
Breast cancer; CCND1; LncRNA
Categories
Funding
- Shahid Beheshti University of Medical Sciences
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Cyclin D1 has been found to be regulated by long non-coding RNAs (lncRNAs) in breast cancer. In this study, two CCND1-related lncRNAs, HOTTIP and CBR3-AS1, were found to be up-regulated in breast cancer tissues. These lncRNAs could potentially serve as markers for breast cancer.
Cyclin D1 has been shown to participate in the pathogenesis of breast cancer. This cell cycle-related protein has direct or indirect interactions with long non-coding RNAs (lncRNAs). In the present two-step study, we first identified CCND1-related lncRNAs through an in silica approach. Then, we measured expression of CCND1 mRNA and five lncRNAs in paired breast cancer samples and their matched non-cancerous samples obtained from adjacent tissues. HOTTIP expression was significantly higher in breast cancer tissues compared with adjacent tissues (expression ratio (95% CI)= 4.63 (1.56-13.76), P value= 0.0070). Similarly, CBR3-AS1 was up-regulated in cancerous tissues compared with control tissues (expression ration (95% CI)= 3.26 (1.35-7.86), P value= 0.0122). Expression of HOTTIP was higher in estrogen receptor (ER) negative samples compared with ER positive ones (-4.35 +/- 1.33 versus -4.63 +/- 0.62, P value=0.002). CBR3-AS1 could differentiate between these two sets of samples with AUC+SD, sensitivity, specificity and P values of 0.7 +/- 0.05, 0.9, 0.49 and 0.003, respectively. These values were 0.68 +/- 0.04, 0.87, 0.34 and 0.04 for HOTTIP. Although we could not find difference in expression of CCND1 between these two sets of samples, we reported up-regulation of two CCND1-related lncRNAs in breast cancer samples. These lncRNAs are putative markers for breast cancer.
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