|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | NLP1 reciprocally regulates nitrate inhibition of nodulation through SUNN-CRA2 signaling in Medicago truncatula显示文摘Most legume plants can associate with diazotrophic soil bacteria called rhizobia,resulting in new root organs called nodules that enable N2 fixation.Nodulation is an energy-consuming process,and nodule number is tightly regulated by independent systemic signaling pathways controlled by CLE/SUNN and CEP/CRA2.Moreover,nitrate inhibits legume nodulation via local and systemic regulatory pathways.In Medicago truncatula,NLP1 plays important roles in nitrate-induced inhibition of nodulation,but the relationship between systemic and local pathways in mediating nodulation inhibition by nitrate is poorly understood.In this study,we found that nitrate induces CLE35 expression in an NLP1-dependent manner and that NLP1 binds directly to the CLE35 promoter to activate its expression.Grafting experiments revealed that the systemic control of nodule number involves negative regulation by SUNN and positive regulation by CRA2 in the shoot,and that NLP1’s control of the inhibition of rhizobial infection,nodule development,and nitrogenase activity in response to nitrate is determined by the root.Unexpectedly,grafting experiments showed that loss of CRA2 in the root increases nodule number at inhibitory nitrate levels,probably because of CEP1/2 upregulation in the cra2 mutants,suggesting that CRA2 exerts active negative feedback regulation in the root. | Zhenpeng Luo Jie-shun Lin Yali Zhu Mengdi Fu Xiaolin Li Fang Xie | 2021 | Plant Communications2021，2，3： | 5 |
| 2 | Seco-cyclic phorbol derivatives and their anti-HIV-1 activities显示文摘Phorbol esters are recognized for their dual role as anti-HIV-1 agents and as activators of protein kinase C(PKC).The efficacy of phorbol esters in binding with PKC is attributed to the presence of oxygen groups at positions C20,C3/C4,and C9 of phorbol.Concurrently,the lipids located at positions C12/C13 are essential for both the anti-HIV-1 activity and the formation of the PKC-ligand complex.The influence of the cyclopropane ring at positions C13 and C14 in phorbol derivatives on their anti-HIV-1 activity requires further exploration.This research entailed the hydrolysis of phorbol,producing seco-cyclic phorbol derivatives.The anti-HIV-1 efficacy of these derivatives was assessed,and the affinity constant(Kd)for PKC-δprotein of selected seco-cyclic phorbol derivatives was determined through isothermal titration calorimetry.The findings suggest that the chemical modification of cyclopropanols could affect both the anti-HIV-1 activity and the PKC binding affinity.Remarkably,compound S11,with an EC50 of 0.27μmol·L^(−1) and a CC50 of 153.92μmol·L^(−1),demonstrated a potent inhibitory effect on the intermediate products of HIV-1 reverse transcription(ssDNA and 2LTR),likely acting at the viral entry stage,yet showed no affinity for the PKC-δprotein.These results position compound S11 as a potential candidate for further preclinical investigation and for studies aimed at elucidating the pharmacological mechanism underlying its anti-HIV-1 activity. | HUANG Xiaolei HUANG Xusheng LI Qirun MA Mengdi CUI Yadong YANG Liumeng WANG Haibo LUO Ronghua CHEN Jinglei YANG Jingxuan LIN Jinrong LI Duxin ZHENG Yongtang ZHANG Jian | 2024 | Chinese Journal of Natural Medicines2024，22，4： | 0 |
| 3 | Targeting lysosomes in human disease:from basic research to clinical applications显示文摘In recent years,accumulating evidence has elucidated the role of lysosomes in dynamically regulating cellular and organismal homeostasis.Lysosomal changes and dysfunction have been correlated with the development of numerous diseases.In this review,we interpreted the key biological functions of lysosomes in four areas:cellular metabolism,cell proliferation and differentiation,immunity,and cell death.More importantly,we actively sought to determine the characteristic changes and dysfunction of lysosomes in cells affected by these diseases,the causes of these changes and dysfunction,and their significance to the development and treatment of human disease.Furthermore,we outlined currently available targeting strategies:(1)targeting lysosomal acidification;(2)targeting lysosomal cathepsins;(3)targeting lysosomal membrane permeability and integrity;(4)targeting lysosomal calcium signaling;(5)targeting mTOR signaling;and(6)emerging potential targeting strategies.Moreover,we systematically summarized the corresponding drugs and their application in clinical trials.By integrating basic research with clinical findings,we discussed the current opportunities and challenges of targeting lysosomes in human disease. | Mengdie Cao Xiangyuan Luo Kongming Wu Xingxing He | 2021 | Signal Transduction and Targeted Therapy2021，6，12： | 0 |
| 4 | Three-dimensional nanoscale vortex line visualization and chiral nanostructure fabrication of tightly focused multi-vortex beams via direct laser writing显示文摘Optical singularity is pivotal in nature and has attracted wide interest from many disciplines nowadays,including optical communication,quantum optics,and biomedical imaging.Visualizing vortex lines formed by phase singularities and fabricating chiral nanostructures using the evolution of vortex lines are of great significance.In this paper,we introduce a promising method based on two-photon polymerization direct laser writing(2PP-DLW)to record the morphology of vortex lines generated by tightly focused multi-vortex beams(MVBs)at the nanoscale.Due to Gouy phase,the singularities of the MVBs rotate around the optical axis and move towards each other when approaching the focal plane.The propagation dynamics of vortex lines are recorded by 2PP-DLW,which explicitly exhibits the evolution of the phase singularities.Additionally,the MVBs are employed to fabricate stable three-dimensional chiral nanostructures due to the spiral-forward property of the vortex line.Because of the obvious chiral features of the manufactured nanostructures,a strong vortical dichroism is observed when excited by the light carrying orbital angular momentum.A number of applications can be envisioned with these chiral nanostructures,such as optical sensing,chiral separation,and information storage. | MENGDI LUO JISEN WEN PENGCHENG MA QIUYUAN SUN XIANMENG XIA GANGYAO ZHAN ZHENYAO YANG LIANG XU DAZHAO ZHU CUIFANG KUANG XU LIU | 2024 | Photonics Research2024，12，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员