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您的检索式：作者名="Felix O.Aikhionbare"
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| 1 | IRE1-RACK1 axis orchestrates ER stress preconditioning-elicited cytoprotection from ischemia/reperfusion injury in liver显示文摘Endoplasmic reticulum(ER)stress is involved in ischemic preconditioning that protects various organs from ischemia/reperfusion(I/R)injury.We established an in vivo ER stress preconditioning model in which tunicamycin was injected into rats before hepatic I/R.The hepatic I/R injury,demonstrated by serum aminotransferase level and the ultra-structure of the liver,was alleviated by administration of tunicamycin,which induced ER stress in rat liver by activating inositol-requiring enzyme1(IRE1)andupregulating78 kDaglucose-regulated protein(GRP78).The proteomic identification for IRE1 binders revealed interaction and cooperation among receptor for activated C kinase 1(RACK1),phosphorylated AMPK,and IRE1 under ER stress conditions in a spatiotemporal manner.Furthermore,in vitro ER stress preconditioningwas induced by thapsigargin and tunicamycin in L02 and Hep G2 cells.Surprisingly,BCL2 was found to bephosphorylated by IRE1 under ER stress conditions to prevent apoptotic process by activation of autophagy.In conclusion,ER stress preconditioning protects against hepatic I/R injury,which is orchestrated by IRE1-RACK1 axis through the activation of BCL2.Our findings provide novel insights into the molecular pathways underlying ER stress preconditioning-elicited cytoprotective effect against hepatic I/R injury. | Dong Liu Xing Liu Ti Zhou William Yao Jun Zhao Zhigang Zheng Wei Jiang Fengsong Wang Felix O.Aikhionbare Donald L.Hill Nerimah Emmett Zhen Guo Dongmei Wang Xuebiao Yao Yong Chen | 2016 | Journal of Molecular Cell Biology2016，8，2： | 1 |
| 2 | Mps1 dimerization and multisite interactions with Ndc80 complex enable responsive spindle assembly checkpoint signaling显示文摘Error-free mitosis depends on accurate chromosome attachment to spindle microtubules,which is monitored by the spindle assembly checkpoint(SAC)signaling.As an upstream factor of SAC,the precise and dynamic kinetochore localization of Mps1 kinase is critical for initiating and silencing SAC signaling.However,the underlying molecular mechanism remains elusive.Here,we demonstrated that the multisite interactions between Mps1 and Ndc80 complex(Ndc80C)govern Mps1 kinetochore targeting.Importantly,we identified direct interaction between Mps1 tetratricopeptide repeat domain and Ndc80C.We further identified that Mps1 C-terminal fragment,which contains the protein kinase domain and C-tail,enhances Mps1 kinetochore localization.Mechanistically,Mps1 C-terminal fragment mediates its dimerization.Perturbation of C-tail attenuates the kinetochore targeting and activity of Mps1,leading to aberrant mitosis due to compromised SAC function.Taken together,our study highlights the importance of Mps1 dimerization and multisite interactions with Ndc80C in enabling responsive SAC signaling. | Ping Gui Divine M.Sedzro Xiao Yuan Sikai Liu Mohan Hei Wei Tian Najdat Zohbi Fangwei Wang Yihan Yao Felix O.Aikhionbare Xinjiao Gao Dongmei Wang Xuebiao Yao Zhen Dou | 2020 | Journal of Molecular Cell Biology2020，12，7： | 1 |
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