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CD70 is a potential prognostic marker and significantly regulates cellular function in diffuse large B-cell lymphoma.

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High CD70 expression in diffuse large B-cell lymphoma (DLBCL) correlates with poor prognosis and immune evasion. Targeting CD70 may offer a new therapeutic strategy for DLBCL patients.

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Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • Dysregulation of costimulatory molecules is critical in cancer.
  • The role of intratumoral CD70 in diffuse large B-cell lymphoma (DLBCL) initiation, progression, and immune response is not well understood.

Purpose of the Study:

  • To investigate the clinical significance of CD70 in DLBCL diagnosis and prognosis.
  • To explore the relationship between CD70 and the tumor immune microenvironment.
  • To elucidate the functional role of CD70 in DLBCL cells.

Main Methods:

  • Analysis of CD70 expression in DLBCL using multiple online databases (TIMER, GEPIA, GENT2, TNMPlot, GSCA, GEO).
  • Evaluation of clinical correlations and prognostic value of CD70.
  • In vitro experiments on DLBCL cells to assess CD70 inhibition effects.
  • Genomic alteration analysis via cBioPortal.
  • Co-expression network and functional enrichment analyses.
  • Correlation analysis of CD70 expression with immune cell infiltration using TIMER2.0.

Main Results:

  • CD70 expression is significantly upregulated in DLBCL tissues compared to normal tissues.
  • High CD70 expression is linked to poor clinical outcomes and worse overall survival in DLBCL patients.
  • CD70 inhibition induces apoptosis and G1 phase arrest in DLBCL cells.
  • CD70 is functionally associated with tumor necrosis factor receptor binding and the NF-κB signaling pathway.
  • CD70 expression negatively correlates with B cell and NK cell infiltration in DLBCL.

Conclusions:

  • CD70 serves as a potential diagnostic and therapeutic biomarker for DLBCL.
  • Targeting CD70 may represent a novel therapeutic strategy for DLBCL treatment.
  • Findings offer insights into CD70's role in the DLBCL immune microenvironment.