Abstract:
:Mesenchymal stem cells (MSCs) can donate mitochondria and rescue anthracycline-induced cardiomyocyte (CM) damage, although the underlying mechanisms remain elusive. We determined that the superior efficiency of mitochondrial transfer by human induced-pluripotent-stem-cell-derived MSCs (iPSC-MSCs) compared with bone marrow-derived MSCs (BM-MSCs) is due to high expression of intrinsic Rho GTPase 1 (MIRO1). Further, due to a higher level of TNFαIP2 expression, iPSC-MSCs are more responsive to tumor necrosis factor alpha (TNF-α)-induced tunneling nanotube (TNT) formation for mitochondrial transfer to CMs, which is regulated via the TNF-α/NF-κB/TNFαIP2 signaling pathway. Inhibition of TNFαIP2 or MIRO1 in iPSC-MSCs reduced the efficiency of mitochondrial transfer and decreased CMs protection. Compared with BM-MSCs, transplantation of iPSC-MSCs into a mouse model of anthracycline-induced cardiomyopathy resulted in more human mitochondrial retention and bioenergetic preservation in heart tissue. Efficacious transfer of mitochondria from iPSC-MSCs to CMs, due to higher MIRO1 expression and responsiveness to TNF-α-induced nanotube formation, effectively attenuates anthracycline-induced CM damage.
journal_name
Stem Cell Reportsjournal_title
Stem cell reportsauthors
Zhang Y,Yu Z,Jiang D,Liang X,Liao S,Zhang Z,Yue W,Li X,Chiu SM,Chai YH,Liang Y,Chow Y,Han S,Xu A,Tse HF,Lian Qdoi
10.1016/j.stemcr.2016.08.009subject
Has Abstractpub_date
2016-10-11 00:00:00pages
749-763issue
4issn
2213-6711pii
S2213-6711(16)30176-Xjournal_volume
7pub_type
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