Abstract
Noncoding RNAs are key regulators in the Warburg Effect, an emerging hallmark of cancer. We intended to investigate the role and mechanism of circular RNA hsa_circ_0052611 (circ_0052611) and microRNA (miR)-767-5p in breast cancer (BRCA) hallmarks, especially the Warburg Effect. Expression of circ_0052611 and SCAI was downregulated, and miR-767-5p was upregulated in human BRCA tissues and cells; moreover, circ_0052611 acted as a miR-767-5p sponge to modulate the expression of miR-767-5p-targeted SCAI. Functionally, re-expressing circ_0052611 suppressed migration, invasion, glucose uptake, lactate production, and extracellular acidification rate (ECAR) in BRCA cells, and promoted apoptotic rate. These effects were accompanied by decreased Vimentin, N-cadherin, Bcl-2, and LDHA, and increased E-cadherin and Bax. Consistently, exhausting miR-767-5p exerted similar effects in BRCA cells. High miR-767-5p could counteract the role of circ_0052611 overexpression, and low SCAI likewise blocked the role of miR-767-5p deletion. In vivo, upregulating circ_0052611 delayed tumor growth of BRCA cells by altering miR-767-5p and SCAI expression. circ_0052611/miR-767-5p/SCAI axis might boycott the malignancy of BRCA cells.
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The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This study was supported by
1. The Joint construction project of Medical science and technology in Henan Province, Grant/Award Number: LHGJ20220489.
2. The Joint construction proect of Medica sciece and technology in Henan Province, Grant Award Number: LHGJ20220487.
3. Henan Medical Education Research Project, Grant Award Number:Wjlx2022072.
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Conception and design of experiments: Xin Wang and Zongwen Liu; Experimental part and interpretation of data: Zongwen Liu, Alan Chu and Rui Song; Data analysis and statistics: Rui Song and Shijia Liu; Project administration: Xin Wang; Writing – original draft: Xin Wang, Zongwen Liu; Writing - review and editing: Ting Chai and Chen Sun. All authors read and approved the final manuscript.
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Wang, X., Liu, Z., Chu, A. et al. Hsa_circ_0052611 and mir-767-5p guide the warburg effect, migration, and invasion of BRCA cells through modulating SCAI. J Bioenerg Biomembr 55, 381–396 (2023). https://doi.org/10.1007/s10863-023-09985-4
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DOI: https://doi.org/10.1007/s10863-023-09985-4