4.7 Article

Long noncoding RNA lncAIS downregulation in mesenchymal stem cells is implicated in the pathogenesis of adolescent idiopathic scoliosis

Journal

CELL DEATH AND DIFFERENTIATION
Volume 26, Issue 9, Pages 1700-1715

Publisher

NATURE PUBLISHING GROUP
DOI: 10.1038/s41418-018-0240-2

Keywords

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Funding

  1. National Natural Science Foundation of China [81272054, 81171673, 91640203]
  2. Beijing Talent Fund [2015000021223ZK27]
  3. Beijing Nova program Grant [2014A019]
  4. Beijing Natural Science Foundation [7181006]
  5. Peking Union Medical College Youth Fund
  6. PUMC Nova program Grant of Chinese academy of medical sciences
  7. Beijing High-level Innovative Entrepreneurial Talent Fund

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Adolescent idiopathic scoliosis (AIS) is a complex, three dimensional deformity of the spine that commonly occurs in pubescent girls. Abnormal osteogenic differentiation of mesenchymal stem cells (MSCs) is implicated in the pathogenesis of AIS. However, the biological roles of long noncoding RNAs (lncRNAs) in the regulation of osteogenic differentiation of MSCs are unknown. Through microarray analyses of bone marrow (BM) MSCs from healthy donors and AIS patients, we identified 1483 differentially expressed lncRNAs in AIS BM-MSCs. We defined a novel lncAIS (gene symbol: ENST00000453347) is dramatically downregulated in AIS BM-MSCs. In normal BM-MSCs, lncAIS interacts with NF90 to promote HOXD8 mRNA stability that enhances RUNX2 transcription in BM-MSCs, leading to osteogenic differentiation of normal BM-MSCs. By contrast, lncAIS downregualtion in AIS BM-MSCs cannot recruit NF90 and abrogates HOXD8 mRNA stability, which impedes RUNX2 transcription for osteogenic differentiation. Thereby lncAIS downregualtion in BM-MSCs suppresses osteogenic differentiation that is implicated in the pathogenesis of AIS.

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