The phosphatidylinositol 3-kinase(PI3K)-AKT pathway is involved in various cellular functions, including anti-apoptosis, protein synthesis, glucose metabolism and cell cycling. However, the role of the PI3K-AKT pathwa...The phosphatidylinositol 3-kinase(PI3K)-AKT pathway is involved in various cellular functions, including anti-apoptosis, protein synthesis, glucose metabolism and cell cycling. However, the role of the PI3K-AKT pathway in crustaceans remains unclear. In the present study, we cloned and characterized the AKT gene lvakt from Litopenaeus vannamei. The 511-residue LVAKT was highly conserved; contained a PH domain, a catalytic domain and a hydrophobic domain; and was highly expressed in the heart and gills of L. vannamei. We found, using Real-Time Quantitative PCR(Q-PCR) analysis, that lvakt was upregulated during early white spot syndrome virus(WSSV) infection. Moreover, the PI3K-specific inhibitor, LY294002, reduced viral gene transcription, implying that the PI3K-AKT pathway might be hijacked by WSSV. Our results therefore suggest that LVAKT may play an important role in the shrimp immune response against WSSV.展开更多
Hippo信号通路是一条在进化上保守的丝氨酸/苏氨酸激酶级联信号通路,主要参与调控器官大小、组织再生、胚胎发育和肿瘤发生。在果蝇中,经典的Hippo信号通路主要由Hippo(Hpo)、Salvador(Sav)、Warts(Wts)、MOB as tumor suppressor (Mats...Hippo信号通路是一条在进化上保守的丝氨酸/苏氨酸激酶级联信号通路,主要参与调控器官大小、组织再生、胚胎发育和肿瘤发生。在果蝇中,经典的Hippo信号通路主要由Hippo(Hpo)、Salvador(Sav)、Warts(Wts)、MOB as tumor suppressor (Mats)、Yorkie(Yki)和Scalloped(Sd)组成。其不仅可通过Fat(Ft)和Crumbs(Crb)等上游分子进行调控,而且还能与NF-κB途径、IFN途径、ROS途径、cGAS-STING信号通路以及Wnt信号通路发生交联,共同调控天然免疫过程。海洋无脊椎动物缺乏获得性免疫,主要依靠天然免疫抵御病原体的侵害。Hippo信号通路作为与生长发育和天然免疫密切相关的信号通路,对海洋无脊椎动物的研究中有着重要的意义。目前,对于海洋无脊椎动物Hippo信号通路所知甚少,关于其在天然免疫中的研究更是寥寥无几。开展Hippo信号通路在海洋无脊椎动物天然免疫过程中功能机制的研究,将为深入了解海洋无脊椎动物的天然免疫调控提供一种新思路。本文通过对Hippo信号通路的组成、调控机制以及其在海洋无脊椎动物天然免疫中作用的研究进行综述。将为海洋无脊椎动物天然免疫研究提供有益的参考。展开更多
基金Supported by the Scientific Research Foundation of Third Institute of Oceanography,SOA(No.2011018)the Natural Science Foundation of Fujian Province of China(No.2011J05079)+3 种基金the National Natural Science Foundation of China(No.31001125)the Major State Basic Research Development Program of China(973 Program)(No.2012CB114403)the National High Technology Research and Development Program of China(863 Program)(No.2012AA092205)the China Agriculture Research System-47
文摘The phosphatidylinositol 3-kinase(PI3K)-AKT pathway is involved in various cellular functions, including anti-apoptosis, protein synthesis, glucose metabolism and cell cycling. However, the role of the PI3K-AKT pathway in crustaceans remains unclear. In the present study, we cloned and characterized the AKT gene lvakt from Litopenaeus vannamei. The 511-residue LVAKT was highly conserved; contained a PH domain, a catalytic domain and a hydrophobic domain; and was highly expressed in the heart and gills of L. vannamei. We found, using Real-Time Quantitative PCR(Q-PCR) analysis, that lvakt was upregulated during early white spot syndrome virus(WSSV) infection. Moreover, the PI3K-specific inhibitor, LY294002, reduced viral gene transcription, implying that the PI3K-AKT pathway might be hijacked by WSSV. Our results therefore suggest that LVAKT may play an important role in the shrimp immune response against WSSV.
文摘Hippo信号通路是一条在进化上保守的丝氨酸/苏氨酸激酶级联信号通路,主要参与调控器官大小、组织再生、胚胎发育和肿瘤发生。在果蝇中,经典的Hippo信号通路主要由Hippo(Hpo)、Salvador(Sav)、Warts(Wts)、MOB as tumor suppressor (Mats)、Yorkie(Yki)和Scalloped(Sd)组成。其不仅可通过Fat(Ft)和Crumbs(Crb)等上游分子进行调控,而且还能与NF-κB途径、IFN途径、ROS途径、cGAS-STING信号通路以及Wnt信号通路发生交联,共同调控天然免疫过程。海洋无脊椎动物缺乏获得性免疫,主要依靠天然免疫抵御病原体的侵害。Hippo信号通路作为与生长发育和天然免疫密切相关的信号通路,对海洋无脊椎动物的研究中有着重要的意义。目前,对于海洋无脊椎动物Hippo信号通路所知甚少,关于其在天然免疫中的研究更是寥寥无几。开展Hippo信号通路在海洋无脊椎动物天然免疫过程中功能机制的研究,将为深入了解海洋无脊椎动物的天然免疫调控提供一种新思路。本文通过对Hippo信号通路的组成、调控机制以及其在海洋无脊椎动物天然免疫中作用的研究进行综述。将为海洋无脊椎动物天然免疫研究提供有益的参考。
