Aging-related biomarkers in testicular cancer survivors after different oncologic treatments
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View abstract on PubMed
Summary
This summary is machine-generated.Chemotherapy and bone marrow transplant treatments in testicular cancer survivors (TCS) are linked to immunosenescence, characterized by altered lymphocyte populations and increased CDKN2A/p16INK4a expression. Orchiectomy alone did not show these effects, indicating cytotoxic agents drive these changes.
Area Of Science
- Immunology
- Oncology
- Gerontology
Background
- Testicular cancer survivors (TCS) exposed to chemotherapy exhibit increased CDKN2A/p16INK4a expression and a lymphocyte phenotype associated with immunosenescence.
- The potential link between chemotherapy and this immunosenescent phenotype in TCS requires further investigation.
Purpose Of The Study
- To determine if the immunosenescent phenotype observed in testicular cancer survivors (TCS) is associated with prior chemotherapy exposure.
- To investigate the impact of different treatment modalities (orchiectomy, chemotherapy, bone marrow transplant) on immune cell populations and CDKN2A/p16INK4a expression in TCS.
Main Methods
- A case-control study involving 65 TCS, disease-free for at least 3 months, stratified by treatment: orchiectomy only, chemotherapy, or bone marrow transplant (BMT).
- Comparison with age-matched healthy controls (HC).
- Flow cytometry for lymphocyte subpopulations, qPCR for CDKN2A/p16INK4a expression, and C-reactive protein (CRP) levels were measured.
Main Results
- Chemotherapy and BMT groups showed decreased naïve CD4 cells and increased central/effector memory CD4 cells, and increased effector/terminally differentiated CD8 cells compared to HC.
- Elevated CDKN2A/p16INK4a expression was observed in chemotherapy and BMT groups, but not in the orchiectomy-only group, compared to HC.
- All TCS groups exhibited higher CRP levels than HC, with orchiectomy showing only a marginal increase.
Conclusions
- Only testicular cancer survivors (TCS) treated with cytotoxic agents (chemotherapy or BMT) developed an immunosenescent phenotype.
- These findings support the attribution of immunosenescence in TCS to cytotoxic treatment rather than the cancer or orchiectomy alone.
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