Calcified Tissue International

, Volume 82, Issue 1, pp 12–26

Different Gene Expression Patterns in the Bone Tissue of Aging Postmenopausal Osteoporotic and Non-osteoporotic Women

  • Bernadett Balla
  • János P. Kósa
  • János Kiss
  • Adrienn Borsy
  • János Podani
  • István Takács
  • Áron Lazáry
  • Zsolt Nagy
  • Krisztián Bácsi
  • Gábor Speer
  • László Orosz
  • Péter Lakatos
Article

DOI: 10.1007/s00223-007-9092-3

Cite this article as:
Balla, B., Kósa, J.P., Kiss, J. et al. Calcif Tissue Int (2008) 82: 12. doi:10.1007/s00223-007-9092-3

Abstract

Purpose

To identify genes that are differently expressed in osteoporotic and non-osteoporotic human bone and to describe the relationships between these genes using multivariate data analysis.

Methods

Seven bone tissue samples from postmenopausal osteoporotic patients and 10 bone tissue samples from postmenopausal non-osteoporotic women were examined in our study. Messenger RNA was prepared from each sample and reverse transcribed to cDNA. The expression differences of 87 selected genes were analyzed in a Taqman probe-based quantitative real-time RT-PCR system.

Results

A Mann-Whitney U-test indicated significant differences in the expression of nine genes (p ≤ 0.05). Seven of these nine genes–ALPL, COL1A1, MMP2, MMP13, MMP9, PDGFA, NFKB1—were significantly downregulated in the bone tissue of osteoporotic women, while CD36 and TWIST2 were significantly upregulated in osteoporotic patients. Principal components analysis was used to evaluate data structure and the relationship between osteoporotic and non-osteoporotic phenotypes based on the multiple mRNA expression profiles of 78 genes. Canonical variates analysis demonstrated further that osteoporotic and non-osteoporotic tissues can be distinguished by expression analysis of genes coding growth factors/non-collagen matrix molecules, and genes belonging to the canonical TGFB pathway.

Conclusion

Significant differences observed in gene expression profiles of osteoporotic and non-osteoporotic human bone tissues provide further insight into the pathogenesis of this disease. Characterization of the differences between osteoporotic and non-osteoporotic bones by expression profiling will contribute to the development of diagnostic tools in the future.

Keywords

Canonical variates analysis Human subjects Osteoporosis Principal components analysis Transcriptional profiling 

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Bernadett Balla
    • 1
  • János P. Kósa
    • 1
  • János Kiss
    • 2
  • Adrienn Borsy
    • 3
    • 4
  • János Podani
    • 5
  • István Takács
    • 1
  • Áron Lazáry
    • 1
  • Zsolt Nagy
    • 1
  • Krisztián Bácsi
    • 1
  • Gábor Speer
    • 1
  • László Orosz
    • 3
    • 4
  • Péter Lakatos
    • 1
  1. 1.1st Department of Internal MedicineSemmelweis UniversityBudapestHungary
  2. 2.Department of OrthopaedicsSemmelweis UniversityBudapestHungary
  3. 3.Institute of GeneticsAgricultural Biotechnology CenterGödöllőHungary
  4. 4.Department of GeneticsEötvös Loránd UniversityBudapestHungary
  5. 5.Department of Plant Taxonomy and EcologyEötvös Loránd UniversityBudapestHungary

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