Current opinion in organ transplantation · 2024
The current state of tolerance induction in vascularized composite allotransplantation.
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Blades Caitlin M, Huang Christene A, Mathes David W
Аннотация
PURPOSE OF REVIEW: Significant advancements have been made in the field of vascularized composite allotransplantation (VCA); however, like solid organ transplantation, bypassing the recipient's immune response remains a significant obstacle to long-term allograft survival. Therefore, strategies to overcome acute and chronic rejection and minimize immunosuppressive therapy are crucial for the future of VCA. This review highlights recent attempts to induce tolerance in VCA and discusses key findings through a clinical lens.
RECENT FINDINGS: Promising VCA tolerance protocols are being investigated, with five recent studies illustrating various successes. These preclinical approaches demonstrate a correlation between the presence of donor-derived T cells and VCA tolerance, the importance of using clinically available reagents within preclinical protocols, and the ability to induce sustained tolerance through nonmyeloablative methods. Furthermore, environmental factors, such as NB-UVB light are being investigated for their immunomodulation properties and may influence VCA graft rejection.
SUMMARY: To widen the scope of VCA, minimization of immunosuppression is needed. Overall, tolerance induction protocols should have a low-toxicity level, minimally invasive induction therapies, and utilize short-term immunosuppressive medications. By examining the milestones of recent studies, researchers can gain new technical approaches to immune modulation and make data-driven amendments to tolerance protocols in preparation for clinical translation.
RECENT FINDINGS: Promising VCA tolerance protocols are being investigated, with five recent studies illustrating various successes. These preclinical approaches demonstrate a correlation between the presence of donor-derived T cells and VCA tolerance, the importance of using clinically available reagents within preclinical protocols, and the ability to induce sustained tolerance through nonmyeloablative methods. Furthermore, environmental factors, such as NB-UVB light are being investigated for their immunomodulation properties and may influence VCA graft rejection.
SUMMARY: To widen the scope of VCA, minimization of immunosuppression is needed. Overall, tolerance induction protocols should have a low-toxicity level, minimally invasive induction therapies, and utilize short-term immunosuppressive medications. By examining the milestones of recent studies, researchers can gain new technical approaches to immune modulation and make data-driven amendments to tolerance protocols in preparation for clinical translation.