The effect of systemic PTEN antagonist peptides on axon growth and functional recovery after spinal cord injury.
The effect of systemic PTEN antagonist peptides on axon growth and functional recovery after spinal cord injury.
复制标题
全身性PTEN拮抗剂肽对脊髓损伤后轴突生长和功能恢复的影响。
DOI:
10.1016/j.biomaterials.2014.02.037
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发表时间:
2014-05
期刊:
影响因子:
14
通讯作者:
Li, Shuxin
中科院分区:
文献类型:
--
作者:
Ohtake, Yosuke;Park, Dongsun;Abdul-Muneer, P. M.;Li, Hui;Xu, Bin;Sharma, Kartavya;Smith, George M.;Selzer, Michael E.;Li, Shuxin
关键词:
Knockout studies suggest that PTEN limits the regenerative capacities of CNS axons as a dominant antagonist of PI3 kinase, but the transgenic approach is not feasible for treating patients. Although application of bisperoxovanadium may block PTEN function, it is a general inhibitor of phosphotyrosine phosphatases and may target enzymes other than PTEN, causing side effects and preventing firm conclusions about PTEN inhibition on regulating neuronal growth. A pharmacological method to selectively suppress PTEN post-injury could be a valuable strategy for promoting CNS axon regeneration. We identified PTEN antagonist peptides (PAPs) by targeting PTEN critical functional domains and evaluated their efficacy for promoting axon growth. Four PAPs (PAP1-4) bound to PTEN protein expressed in COS7 cells and blocked PTEN signaling in vivo. Subcutaneous administration of PAPs initiated two days after dorsal over-hemisection injury significantly stimulated growth of descending serotonergic fibers in the caudal spinal cord of adult mice. Systemic PAPs induce significant sprouting of corticospinal fibers in the rostral spinal cord and limited growth of corticospinal axons in the caudal spinal cord. More importantly, PAP treatment enhanced recovery of locomotor function in adult rodents with spinal cord injury. This study may facilitate development of effective therapeutic agents for CNS injuries.
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影响因子:
11.2
作者:
Carracedo A;Alimonti A;Pandolfi PP
通讯作者:
Pandolfi PP
影响因子:
16.2
作者:
Gao, Y;Deng, KW;Filbin, MT
通讯作者:
Filbin, MT
影响因子:
4.3
作者:
Drake, PG;Posner, BI
通讯作者:
Posner, BI
DOI:
10.1523/jneurosci.5045-09.2010
发表时间:
2010-01-20
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Dill J;Patel AR;Yang XL;Bachoo R;Powell CM;Li S
通讯作者:
Li S
影响因子:
5.3
作者:
Christie, Kimberly J.;Webber, Christine A.;Zochodne, Douglas W.
通讯作者:
Zochodne, Douglas W.