MiR-182 is a negative regulator of osteoblast proliferation, differentiation, and skeletogenesis through targeting FoxO1

Kyoung Min Kim, Su Jin Park, Seung Hyun Jung, Eun Jin Kim, Gadi Jogeswar, Jami Ajita, Yumie Rhee, Cheol Hee Kim, Sungkil Lim

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

Uncontrolled oxidative stress impairs bone formation and induces age-related bone loss in humans. The FoxO family is widely accepted to play an important role in protecting diverse cells from reactive oxygen species (ROS). Activation of FoxO1, the main FoxO in bone, stimulates proliferation and differentiation as well as inhibits apoptosis of osteoblast lineage cells. Despite the important role of FoxO1, little is known about how FoxO1 expression in bone is regulated. Meanwhile, several recent studies reported that microRNAs (miRNAs) could play a role in osteoblast differentiation and bone formation by targeting various transcriptional factors. Here, we identified one additional crucial miRNA, miR-182, which regulates osteoblastogenesis by repressing FoxO1 and thereby negatively affecting osteogenesis. Overexpression of miR-182 in osteoblast lineage cells increased cell apoptosis and inhibited osteoblast differentiation, whereas in vivo overexpression of miR-182 in zebrafish impaired bone formation. From in silico analysis and validation experiments, FoxO1 was identified as the target of miR-182, and restoration of FoxO1 expression in miR-182-overexpressing osteoblasts rescued them from the inhibitory effects of miR-182. These results indicate that miR-182 functions as a FoxO1 inhibitor to antagonize osteoblast proliferation and differentiation, with a subsequent negative effect on osteogenesis. To treat bone aging, an antisense approach targeting miR-182 could be of therapeutic value.

Original languageEnglish
Pages (from-to)1669-1679
Number of pages11
JournalJournal of Bone and Mineral Research
Volume27
Issue number8
DOIs
Publication statusPublished - 2012 Aug 1

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Osteoblasts
Osteogenesis
MicroRNAs
Bone and Bones
Apoptosis
Zebrafish
Computer Simulation
Osteoporosis
Reactive Oxygen Species
Oxidative Stress

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Orthopedics and Sports Medicine

Cite this

Kim, Kyoung Min ; Park, Su Jin ; Jung, Seung Hyun ; Kim, Eun Jin ; Jogeswar, Gadi ; Ajita, Jami ; Rhee, Yumie ; Kim, Cheol Hee ; Lim, Sungkil. / MiR-182 is a negative regulator of osteoblast proliferation, differentiation, and skeletogenesis through targeting FoxO1. In: Journal of Bone and Mineral Research. 2012 ; Vol. 27, No. 8. pp. 1669-1679.
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MiR-182 is a negative regulator of osteoblast proliferation, differentiation, and skeletogenesis through targeting FoxO1. / Kim, Kyoung Min; Park, Su Jin; Jung, Seung Hyun; Kim, Eun Jin; Jogeswar, Gadi; Ajita, Jami; Rhee, Yumie; Kim, Cheol Hee; Lim, Sungkil.

In: Journal of Bone and Mineral Research, Vol. 27, No. 8, 01.08.2012, p. 1669-1679.

Research output: Contribution to journalArticle

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