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The effects of lanthanum chloride on proliferation and apoptosis of cervical cancer cells: involvement of let-7a and miR-34a microRNAs

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Abstract

Lanthanide elements have been documented to possess various biologic effects, and their compounds have been studied intensely for their anti-cancer potential. However, the underlying mechanisms remain largely unknown. In the present study, we propose that the levels of proliferation and apoptosis related microRNAs (miRNAs), let-7a and miR-34a, which mediate the apoptosis of cervical cancer cells, can be affected by the lanthanum ion. Our data showed that LaCl3 inhibited the proliferation and induced the apoptosis of cervical cancer cells both in vivo and in vitro by regulating let-7a, miR-34a and their downstream genes. This study provides novel evidence demonstrating that the anticancer mechanism of lanthanum chloride is partially attributed to miRNAs regulation and establishes an experimental basis for the clinical application of lanthanum chloride as an anti-cancer drug.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (30960405, 81160193), the Natural Science Foundation of Jiangxi Province (2010GZY0348, 20121DH80026), the Program of Jiangxi Education Department (GJJ11310) and the Program of Wujiang Science and Technology (WWWK201408). Many thanks to Dr. Keegan for his efforts making the manuscript much better.

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    Authors and Affiliations

    1. Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, China

      Lingfang Yu, Jieqi Xiong & Fei Guo

    2. Department of Obstetrics and Gynecology, The First People’s Hospital of Wujiang City, Suzhou, China

      Lingfang Yu

    3. Department of Obstetrics and Gynecology, Jiangxi Maternal and Children Health Hospital, Nanchang, China

      Jieqi Xiong & Ling Guo

    4. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanchang University, Nanchang, China

      Lifang Miao & Sisun Liu

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    1. Lingfang Yu
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    Correspondence to Fei Guo.

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    Lingfang Yu and Jieqi Xiong have contributed equally to this article.

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    Yu, L., Xiong, J., Guo, L. et al. The effects of lanthanum chloride on proliferation and apoptosis of cervical cancer cells: involvement of let-7a and miR-34a microRNAs. Biometals 28, 879–890 (2015). https://doi.org/10.1007/s10534-015-9872-6

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    • DOI: https://doi.org/10.1007/s10534-015-9872-6

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