Journal
ONCOLOGY RESEARCH
Volume 25, Issue 9, Pages 1517-1527Publisher
COGNIZANT COMMUNICATION CORP
DOI: 10.3727/096504017X14859934460780
Keywords
Osteosarcoma (OS); miR-26a-5p; MALAT1; Forkhead box O1 (FOXO1); Metastasis
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Funding
- Department of Traditional Chinese Orthopedics and Traumatology, The Affiliated Hospital of Shandong Academy of Medical Sciences
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miR-26a has been found to be downregulated in osteosarcoma (OS) when compared with normal control tissues and has been shown to suppress the malignant behaviors of OS cells. The underlying mechanism, nevertheless, remains unknown. In our study, the long noncoding RNA MALAT1, confirmed to be significantly upregulated in OS, is first shown to be capable of promoting proliferation and migration by directly suppressing miR-26a-5p in OS cells. In addition, we have identified forkhead box O1 (FOXO1) as a transcriptional factor of MALAT1 that can negatively regulate MALAT1. We have shown that MALAT1 promoted growth and migration through inhibiting miR-26a-5p in OS cells. Suppression of FOXO1, identified as a regulatory transcriptional factor of MALAT1, was shown to be able to slow down both proliferation and metastases in OS cells, suggesting that targeting FOXO1 can be useful in the therapy of patients with OS.
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