Myeloid-derived suppressor cells: Multi-talented immune suppressive cells that can be either helpful or harmful

Ostrand‐Rosenberg, Suzanne

doi:10.1016/j.cellimm.2021.104374

Cited by 1 publication

(1 citation statement)

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“…Therefore, MDSCs could affect physiological and pathological conditions, depending on their environment, such as chronic inflammation and stress. [ 57 ] The other concern may be the possibility of the differentiation of immature MDSCs into other immune cells, including DCs, macrophages, or neutrophils, affected by several external environmental conditions [ 58 , 59 ]. In our study, local and systemic MDSCs treatment did not show an increased population of DCs and macrophages at the transplanted cornea, compared to PBS control groups, but we need to evaluate the specific distribution and differentiation of MDSCs systemically in further experiments.…”

Section: Discussionmentioning

confidence: 99%

Local and Systemic Injections of Human Cord Blood Myeloid-Derived Suppressor Cells to Prevent Graft Rejection in Corneal Transplantation

Lee

Sohn²,

Kim³

et al. 2022

Biomedicines

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Myeloid-derived suppressor cells (MDSCs) are therapeutic agents to prevent graft rejection in organ transplants by modulating inflammation. Herein, the immunosuppressive effect of human cord blood MDSCs on corneal allograft models was confirmed. CB-MDSCs were locally (subconjuctival, 5 × 105) or systemically (intravenous, 1 × 106) injected twice on days 0 and 7. A corneal transplantation model was established using C57BL/6 and BALB/c mice, and corneal graft opacity was measured to evaluate graft rejection up to 6 weeks. Results showed that graft survival in the MDSCs groups increased compared to vehicle groups after 42 days. Systemic and local MDSC administration inhibited the maturation (MHC-IIhi CD11c+) of dendritic cells (DCs) and the differentiation of interferon γ+ CD4+ Th1 in draining lymph nodes (LNs). However, vehicle groups increased the infiltration of CD3+ T cells and F4/80+ macrophages and produced prominent neovascular and lymphatic vessels into the graft site with increased mRNA expression of VEGF-A/C and VEGFR-1/R-3. Local MDSCs administration showed prominent anti-angiogenic/anti-lymphangiogenic effects even at lower MDSCs doses. Thus, CB-MDSCs could relatively suppress the infiltration of pathological T cells/macrophages into the corneas and the migration of mature DCs into draining LNs Therefore, ocular and systemic MDSCs administration showed therapeutic potential for preventing corneal allograft rejection.

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Section: Discussionmentioning

confidence: 99%