Direct conversion of quiescent cardiomyocytes to pacemaker cells by expression of Tbx18.
Direct conversion of quiescent cardiomyocytes to pacemaker cells by expression of Tbx18.
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DOI:
10.1038/nbt.2465
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发表时间:
2013-01
影响因子:
46.9
通讯作者:
中科院分区:
文献类型:
--
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The heartbeat originates within the sinoatrial node (SAN), a small highly-specialized structure containing <10,000 genuine pacemaker cells. The ~5 billion working cardiomyocytes downstream of the SAN remain quiescent when it fails, leading to circulatory collapse and fueling a $6B/year electronic pacemaker industry. To engineer faithful biological replicas of rare SAN cells as an alternative therapeutic strategy, we expressed a gene critical for early SAN specification in working cardiomyocytes in vitro, and in vivo in a model of bradycardia. Within days of transduction with Tbx18, ventricular cardiomyocytes in culture developed spontaneous electrical firing physiologically indistinguishable from that of SAN cells, along with morphological and epigenetic features characteristic of SAN cells. Focal Tbx18 gene transfer in the guinea-pig ventricle yielded ectopic pacemaker activity in vivo, correcting a bradycardic disease phenotype. Myocytes transduced in vivo acquired the cardinal tapering morphology and physiological automaticity of native SAN pacemaker cells, while controls remained rectangular and quiescent. The creation of induced SAN-like pacemaker (iSAN) cells by Tbx18 gene transfer opens new prospects for bioengineered pacemakers.
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影响因子:
10.5
作者:
Hoogaars, Willem M. H.;Engel, Angela;Christoffels, Vincent M.
通讯作者:
Christoffels, Vincent M.
DOI:
10.1073/pnas.85.2.339
发表时间:
1988-01-01
影响因子:
11.1
作者:
IZUMO, S;NADALGINARD, B;MAHDAVI, V
通讯作者:
MAHDAVI, V
影响因子:
3.4
作者:
Cheng, H;Song, LS;Stern, MD
通讯作者:
Stern, MD
影响因子:
2.7
作者:
Espinoza-Lewis, Ramon A.;Yu, Ling;He, Fenglei;Liu, Hongbing;Tang, Ruhang;Shi, Jiangli;Sun, Xiaoxiao;Martin, James F.;Wang, Dazhi;Yang, Jing;Chen, YiPing
通讯作者:
Chen, YiPing
影响因子:
20.1
作者:
Cho HC;Marbán E
通讯作者:
Marbán E