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Molecular Medicine

, Volume 21, Issue 1, pp 123–133 | Cite as

Opposite Prognostic Significance of Cellular and Serum Circulating MicroRNA-150 in Patients with Chronic Lymphocytic Leukemia

  • Basile Stamatopoulos
  • Michaël Van Damme
  • Emerence Crompot
  • Barbara Dessars
  • Hakim El Housni
  • Philippe Mineur
  • Nathalie Meuleman
  • Dominique Bron
  • Laurence Lagneaux
Research Article

Abstract

MicroRNAs (or miRs) play a crucial role in chronic lymphocytic leukemia (CLL) physiopathology and prognosis. In addition, circulating microRNAs in body fluids have been proposed as new biomarkers. We investigated the expression of matched cellular and serum circulating microRNA-150 by quantitative real-time PCR (qPCR) from purified CD19+ cells or from CLL serums obtained at diagnosis in a cohort of 273/252 CLL patients with a median follow-up of 78 months (range 7–380) and correlated it to other biological or clinical parameters. We showed that miR-150 was significantly overexpressed in CLL cells/serums compared with healthy subjects (P < 0.0001). Among CLL patients, a low cellular miR-150 expression level was associated with tumor burden, disease aggressiveness and poor prognostic factors. In contrast, a high level of serum miR-150 was associated with tumor burden markers and some markers of poor prognosis. Similarly, cellular and serum miR-150 also predicted treatment-free survival (TFS) and overall survival (OS) in an opposite manner: patients with low cellular/serum miR-150 levels have median TFS of 40/111 months compared with high-level patients who have a median TFS of 122/60 months (P < 0.0001/P = 0.0066). Similar results were observed for OS. We also found that cellular and serum miR-150 levels vary in an opposite manner during disease progression and that cellular miR-150 could be regulated by its release into the extracellular space. Cellular and serum levels of miR-150 are associated with opposite clinical prognoses and could be used to molecularly monitor disease evolution as a new prognostic factor in CLL.

Notes

Acknowledgments

This work was financed by the Télévie fund (Fonds de la Recherche Scientifique — Fonds National de la Recherche Scientifique [F.R.S.-FNRS]).

Supplementary material

10020_2015_2101123_MOESM1_ESM.pdf (12.7 mb)
Supplementary material, approximately 12.7 MB.

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Authors and Affiliations

  • Basile Stamatopoulos
    • 1
  • Michaël Van Damme
    • 1
  • Emerence Crompot
    • 1
  • Barbara Dessars
    • 2
  • Hakim El Housni
    • 2
  • Philippe Mineur
    • 3
  • Nathalie Meuleman
    • 4
  • Dominique Bron
    • 4
  • Laurence Lagneaux
    • 1
  1. 1.Laboratory of Clinical Cell TherapyUniversité Libre de Bruxelles, Institut Jules BordetBruxellesBelgium
  2. 2.Department of Genetics, Erasme HospitalUniversité Libre de BruxellesBrusselsBelgium
  3. 3.Department of Hemato-OncologyGrand Hôpital de CharleroiGillyBelgium
  4. 4.Department of HematologyInstitut Jules BordetBrusselsBelgium

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