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Updated: Mar 31, 2026
Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
Published on: April 12, 2019
Mir-664 promotes osteosarcoma cells proliferation via downregulating of FOXO4
Bin Chen1, Yongzheng Bao2, Xiaoming Chen3
1Department of Orthopedic Spinal Surgery, Nanfang Hospital, Southern Medical University, Guangdong Province, Guangzhou 510515, China; Department of Orthopedic Spinal Surgery, Chenzhou NO.1 People's Hospital, HuNan Province, Chenzhou 0735, China.
Background:
Uncontrol cell growth and proliferation is acknowledged to responsible for cancer-related deaths by disorganizing the balance of growth promotion and growth limitation. Aberrant expression of microRNA play essential roles in cancer development, leads to cell proliferation, growth and survival, and promotes the development of various human tumors, including osteosarcoma. Elucidating the molecular mechanism of this abnormality in osteosarcoma carcinogenesis may improve diagnostic and therapeutic strategies for this malignancy.
Methods:
The expression of miR-664 in osteosarcoma cell lines and osteosarcoma tissues was examined using real-time PCR. The effects of miR-664 on osteosarcoma cell proliferation were evaluated by 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, colony formation and Anchorage-independent growth ability assay. The effect of miR-664 on FOXO4 was determine by luciferase assays and western blot assay.
Results:
The expression of miR-664 was markedly upregulated in osteosarcoma cell lines and tissues, and upregulation of miR-664 enhanced, whereas downregulation of miR-664 inhibited the proliferation of osteosarcoma cells in vivo. Furthermore, using bioinformatics and biological approaches, we showed that miR-664 directly targeted and suppressed the expression of tumor suppressors FOXO4.
Conclusions:
Our findings suggest that miR-664 functions as an oncogene miRNA and has an important role in promoting human osteosarcoma cell proliferation by suppressing FOXO4 expression. These data suggests that miR-664 may represent a novel therapeutic target of microRNA-mediated suppression of cell proliferation in osteosarcoma.
Insights
MicroRNA-664 (miR-664) acts as an oncogene in osteosarcoma by promoting uncontrolled cell proliferation. This microRNA targets and suppresses the tumor suppressor FOXO4, suggesting miR-664 as a potential therapeutic target for osteosarcoma.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Uncontrolled cell growth drives cancer mortality by disrupting growth regulation.
- Aberrant microRNA expression is implicated in various cancers, including osteosarcoma, affecting cell proliferation and survival.
- Understanding these molecular mechanisms is crucial for improving osteosarcoma diagnosis and treatment.
Purpose of the Study:
- To investigate the role of microRNA-664 (miR-664) in osteosarcoma development.
- To elucidate the molecular targets and functions of miR-664 in osteosarcoma cell proliferation.
Main Methods:
- Real-time PCR was used to assess miR-664 expression in osteosarcoma cell lines and tissues.
- Cell proliferation was evaluated using MTT assays, colony formation, and anchorage-independent growth assays.
- Luciferase assays and Western blot were employed to determine the interaction between miR-664 and FOXO4.
Main Results:
- miR-664 expression was significantly upregulated in osteosarcoma.
- Overexpression of miR-664 enhanced osteosarcoma cell proliferation, while its downregulation inhibited it.
- miR-664 was found to directly target and suppress the expression of the tumor suppressor FOXO4.
Conclusions:
- miR-664 functions as an oncogenic microRNA in osteosarcoma, promoting cell proliferation by suppressing FOXO4.
- miR-664 represents a potential therapeutic target for microRNA-based treatments against osteosarcoma.
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