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2025 ; 14
(10
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
iPSC-derived MSCs alleviate arthritis in collagen-induced arthritis mice by
reducing synovial CD86h iIL1?hi macrophage
#MMPMID41101946
Wu Z
; Su Y
; Li J
; Liu X
; Liu Y
; Zhao L
; Li L
; Gao C
; Yao M
; Zhang L
Stem Cells Transl Med
2025[Sep]; 14
(10
): ä PMID41101946
show ga
BACKGROUND: Joint bone destruction in rheumatoid arthritis (RA) leads to poor
prognosis, with current treatments mainly targeting inflammation and limited
focus on bone damage. Mesenchymal stem cells (MSCs) offer anti-inflammatory and
bone repair properties, but their clinical application is hindered by cellular
heterogeneity. Induced pluripotent stem cell-derived mesenchymal stem cells
(iMSCs) present a promising alternative due to their lower heterogeneity and
replicative senescence, although their potential in RA treatment remains
underexplored. METHODS: iMSCs were injected intraarticularly in a
collagen-induced arthritis (CIA) model. Treatment outcomes, including plantar
swelling, joint score, histological and immunohistochemical staining, microCT
imaging, and bone loss, were assessed. Single-cell RNA sequencing was employed to
study iMSCs' effects on synovial macrophage subsets. RESULTS: In vivo, iMSCs
significantly reduced systemic inflammation and joint bone damage. Analysis of
macrophage subpopulations revealed that iMSCs shifted macrophages from a
pro-inflammatory CD86hiIL1?hi cluster to an anti-inflammatory CD86hiIL1?lo
cluster, leading to reduced inflammation and bone resorption. CONCLUSIONS: iMSCs
effectively alleviate inflammation and bone damage in CIA by modulating
macrophage phenotypes, demonstrating potential for RA therapy.