miRNAs in bone tissue correlate to bone mineral density and circulating miRNAs are gender independent in osteoporotic patients

Sarah Kelch, Elizabeth R Balmayor*, Claudine Seeliger, Helen Vester, Jan S Kirschke, Martijn van Griensven

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We previously demonstrated the aberrant expression of nine specific miRNAs in serum from osteoporotic patients. In the present study, we further evaluated the expression of these miRNAs in bone tissue, osteoblasts, and osteoclasts from 28 patients. We hypothesize that miRNA expression in serum from osteoporotic patients may be gender-independent. A further hypothesis is that the miRNA expression in bone could be correlated with BMD values. Moreover, intracellular expression of these osteoporosis-related miRNAs may indicate the role of these molecules during osteoporosis. Our results indeed show that miRNA expression in serum was gender-independent except for miR125b-5p. A correlation with BMD was confirmed for miR-21-5p, miR-24-3p, miR-93-5p, miR-100-5p and miR125b-5p with linear correlation coefficients r > 0.9. Intracellular studies revealed a simultaneous up-regulation of miR-21-5p, miR-93-5p, miR-100-5p and miR125b-5p in osteoblasts and in osteoclasts. miR-148a-3p up-regulation in cells was specific for osteoporotic osteoclasts. Altogether, miR-21-5p, miR-93-5p, miR-100-5p, and miR-125b-5p showed significant upregulation in serum, tissue and bone cells of osteoporotic patients. All except miR-125b-5p showed gender independent expression and good correlation to BMD values. Our results suggest that these miRNAs may be important for an earlier diagnosis of osteoporosis.

Original languageEnglish
Article number15861
Pages (from-to)15861
Number of pages12
JournalScientific Reports
Volume7
Issue number1
DOIs
Publication statusPublished - 20 Nov 2017
Externally publishedYes

Keywords

  • Aged
  • Aged, 80 and over
  • Bone Density/genetics
  • Bone and Bones/metabolism
  • Circulating MicroRNA/blood
  • Early Diagnosis
  • Female
  • Gene Expression/genetics
  • Gene Expression Profiling
  • Humans
  • Male
  • Middle Aged
  • Osteoporosis, Postmenopausal/blood
  • Osteoporotic Fractures/blood
  • OSTEOLYSIS
  • DOWN-REGULATION
  • OSTEOGENIC DIFFERENTIATION
  • MICRORNAS
  • MESENCHYMAL STEM-CELLS
  • OSTEOCLASTOGENESIS
  • DISEASE
  • FRACTURES
  • SUPPRESSES
  • EXPRESSION

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