Evaluating the Link between BAFF System Gene Expression and Acute Rejection Development in Kidney Transplantation

Area of Science:

• Immunology
• Transplantation Biology

Background:

• B-cell activating factor (BAFF) system signaling is crucial for B-cell function and transplant tolerance.
• Its role in kidney transplant recipients (KTRs) remains understudied.

Purpose of the Study:

• To investigate alterations in BAFF system expression in KTRs, particularly in relation to acute rejection (AR) and chronic allograft damage (CADI).

Main Methods:

• Quantitative PCR (qPCR) analysis of BAFF system components in 40 KTRs.
• Meta-analysis of BAFF system expression and histological renal damage (CADI) from the GEO database.

Main Results:

• Proliferation-inducing ligand (APRIL) and B-cell maturation antigen (BCMA) expression increased post-transplant.
• BAFF expression was elevated in KTRs with CADI.
• BCMA expression was higher in the CADI group over time.
• Transmembrane activator and calcium modulator interactor (TACI) and B-cell activating factor receptor (R-BAFF) were elevated in KTRs with donor-specific antibodies (DSAs).

Conclusions:

• Changes in the BAFF system are associated with the development of AR and chronic allograft damage in KTRs.
• BAFF system components may serve as valuable biomarkers for detecting and preventing adverse kidney graft outcomes.