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Phenotypic Characterization of Diffuse Large B-Cell Lymphoma Cells and Prognostic Impact

Julie Devin1, Alboukadel Kassambara1,2, Angélique Bruyer1

  • 1CNRS UMR9002, Institute of Human Genetics, 34090 Montpellier, France.

Journal of Clinical Medicine
|July 25, 2019
PubMed

Insights

Multiparameter flow cytometry (MFC) aids in diagnosing diffuse large B-cell lymphoma (DLBCL). A new risk score using BCL2, BCL6, CD11c, and LAIR1 gene expression predicts patient outcomes and treatment resistance.

Area of Science:

  • Hematology
  • Immunology
  • Oncology

Background:

  • Mature B-cell neoplasms, particularly diffuse large B-cell lymphoma (DLBCL), are common non-Hodgkin lymphomas.
  • Multiparameter flow cytometry (MFC) offers a rapid and economical method for assessing lymphoid markers in these conditions.

Purpose of the Study:

  • To establish a robust algorithm for DLBCL cell line authentication using MFC.
  • To develop a gene expression-based risk score for predicting DLBCL patient outcomes.
  • To explore the correlation between specific marker expression and treatment resistance in DLBCL.

Main Methods:

  • MFC was used to characterize 27 lymphoid markers in 16 DLBCL cell lines.
  • A risk score was developed based on the expression of BCL2, BCL6, CD11c, and LAIR1 genes in DLBCL samples.
  • DLBCL cell line responses to cyclophosphamide, etoposide, doxorubicin, and gemcitabine were evaluated.

Main Results:

  • A robust MFC algorithm for DLBCL cell line authentication was established.
  • The gene expression-based risk score effectively stratified DLBCL patients into four risk groups.
  • The risk score independently predicted overall survival and showed a correlation between BCL6 overexpression and etoposide resistance.

Conclusions:

  • MFC is valuable for routine characterization of DLBCL cells and tumors for research and clinical purposes.
  • The developed risk score offers a novel prognostic tool for DLBCL patients.
  • Findings suggest potential links between specific marker expression and therapeutic response, guiding future treatment strategies.

Keywords:
DLBCLbiomarkerdrug resistanceflow cytometryprognosis

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