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| 1 | Identification and Expression of the Conotoxin Homologous Genes in the Giant Triton Snail (Charonia tritonis)显示文摘Conotoxin(CTX)is a small peptide toxin,and plays crucial role in anesthetizes prey,preys and defends competitors.Charonia tritonis is the natural predator of the crown of thorns starfish(CoTS)and the protector of coral reefs.It plays an important role in the coral reef ecosystem.However,the types of toxins produced by tritons and the molecular mechanisms of toxin secretion of C.tritonis are unknown.In the present study,the four conotoxin homologous genes(CTXs)from C.tritonis were identified.Species and conotoxin superfamily phylogenetic tree indicated that CTX-1(CL2216.Contig2)and CTX-4(Unigene 58438_All)belong to the C superfamily,CTX-2(Unigene 66414_All)belong to the V superfamily,and CTX-3(Unigene 21408_All)belong to the B1 superfamily.CTXs were highly expressed in salivary gland,liver and digestive gland.The predation control experiment revealed that the expressions of CTXs were significantly different in salivary gland,liver and digestive gland.The results indicated that CTXs may participate in the process of C.tritonis predating CoTs,and provided a scientific basis for further studying the toxins secretion mechanism of C.tritonis. | JIA Huixia ZHANG Gege ZHANG Chenglong ZHANG Hua YAO Gaoyou HE Maoxian LIU Wenguang | 2023 | Journal of Ocean University of China2023，22，1： | 0 |
| 2 | Novel cyclophosphamide of natural products osalmide and pterostilbene induces cytotoxicity and cell cycle arrest in diffuse large B-cell lymphoma cells显示文摘Diffuse large B-cell lymphoma(DLBCL)is the most common category and disease entity of non-Hodgkin lymphoma.Osalmide and pterostilbene are natural products with anticancer activities via different mechanism.In this study,using a new synthetic strategy for the two natural products,we obtained the compound DCZ0801,which was previously found to have anti-multiple myeloma activity.We performed both in vitro and in vivo assays to investigate its bioactivity and explore its underlying mechanism against DLBCL cells.The results showed that DCZ0801 treatment gave rise to a dose-and time-dependent inhibition of cell viability as determined by CCK-8 assay and flow cytometry assay.Western blot analysis results showed that the expression of caspase-3,caspase-8,caspase-9 and Bax was increased,while BCL-2 and BCL-XL levels were decreased,which suggested that DCZ0801 inhibited cell proliferation and promoted intrinsic apoptosis.In addition,DCZ0801 induced G0/G1 phase arrest by downregulating the protein expression levels of CDK4,CDK6 and cyclin D1.Furthermore,DCZ0801 exerted an anti-tumor effect by down-regulating the expressions of p-PI3K and p-AKT.There also existed a trend that the expression of p-JNK and p-P38 was restrained.Intraperitoneal injection of DCZ0801 suppressed tum or development in xenograft mouse models.The preliminary metabolic study showed that DCZ0801 displayed a rapid metabolism within 30 min.These results demonstrated that DCZ0801 may be a new potential anti-DLBCL agent in DLBCL therapy. | Mengyu Xi Wan He Bo Li Jinfeng Zhou Zhijian Xu Huiqun Wu Yong Zhang Dongliang Song Liangning Hu Ye Lu Wenxuan Bu Yuanyuan Kong Gege Chen Shuaikang Chang Jumei Shi Weiliang Zhu | 2020 | Acta Biochimica et Biophysica Sinica2020，52，4： | 0 |
| 3 | antitumor activity in bortezomib-resistant multiple myeloma cells through inhibition of JAK2/STAT3 pathway显示文摘Multiple myeloma(MM),the second most common haematological malignancy,is currently incurable because patients often develop multiple drug resistance and experience subsequent relapse of the disease.This study aims to identify a potential therapeutic agent that can counter bortezomib(BTZ)resistance in MM.DCZ0358,a novel alkaloid compound,is found to exert potent cytotoxic effects against BTZ-resistant MM cells in vivo and in vitro.The antimyeloma activity of DCZ0358 is associated with inhibition of cell proliferation,promotion of cell apoptosis via caspase-mediated apoptotic pathways,and induction of G0/G1 phase arrest via downregulation of cyclin D1,CDK4,and CDK6.Further investigation of the molecular mechanism shows that DCZ0358 suppresses the JAK2/STAT3 signaling pathway.In conclusion,DCZ0358 can successfully counter BTZ resistance in MM cells.This study provides evidence that warrants future preclinical assessments of DCZ0358 as a therapeutic agent against BTZ resistance in MM. | Bibo Zhang Bo Li Yongsheng Xie Shuaikang Chang Zhijian Xu Huifang Hu Gege Chen Ting Zhang Jun He Xiaosong Wu Huabin Zhu Weiming Lai Dongliang Song Ying Lu Xinyan Jia Weiliang Zhu Jumei Shi | 2023 | Acta Biochimica et Biophysica Sinica2023，55，2： | 0 |
| 4 | Rh/CeO_(2) composites prepared by combining dealloying with calcination as an efficient catalyst for CO oxidation and CH4 combustion显示文摘In this paper,a series of Rh/CeO_(2) catalysts with three-dimensional porous nanorod frameworks and large specific surface area were prepared by chemical dealloying Al–Ce–Rh precursor alloys and then calcining in pure O_(2).The effects of the Rh content and calcination temperature on CO oxidation and CH_(4) combustion were studied,and the results reveal that the Rh/CeO_(2) catalysts produced by dealloying melt-spun Al_(91.3)Ce_(8)Rh_(0.7) alloy ribbons and then calcining at 500℃ exhibit the best catalytic activity,the reaction temperatures for the complete conversion of CO and CH_(4) are as low as 90 and 400℃,respectively.Furthermore,after 150 h of continuous testing at high concentrations of H2O and CO_(2),the nature of the catalyst is not irreversibly destroyed and can still return to its initial level of activity.This excellent catalytic activity is attributed to a portion of Rh being uniformly distributed on the CeO_(2) nanorod surface in the form of nanoparticles,forming strong Rh–CeO_(2) interfacial synergy.Another portion of Rh permeated into the CeO_(2) lattice,which results in a significant increase in the number of oxygen vacancies in CeO_(2),thus allowing more surface active oxygen to be adsorbed and converted from the gas phase.Moreover,the catalytic reaction can proceed even in an oxygen-free environment due to the excellent oxygen storage performance of the Rh/CeO_(2) catalyst. | Dong Duan Chunxi Hao Gege He Yang Wen Zhanbo Sun | 2022 | Journal of Rare Earths2022，40，4： | 0 |
| 5 | Quantifying spatial distribution of interrill and rill erosion in a loess at different slopes using structure from motion(SfM)photogrammetry显示文摘The spatial distribution of interrill and rill erosion is essential for unravelling soil erosion principles and the application of soil and water conservation practices.To quantify interrill and rill erosion and their spatial development,four 30-min rainfalls at 90 mm h^(-1)intensity were consecutively simulated on runoff plots packed with a loess at six slopes of 10°,15°,20°,25°,30°and 35°.The soil surface was measured using the structure from motion(SfM)photogrammetry upon each simulation run,and the runoff and sediment samples were collected and measured at every 10 min.Rills did not develop until the third simulation run.During the initial two runs,the lower third section was more severely eroded than the upper and middle thirds along the slope direction,yet the interrill erosion was statistically uniform from left to right.Rills tended to emerge by both sidewalls and in the lower portion in the third run.The corresponding rill erosion increased with slope from 10°to 20°and then decreased for the slopes steeper,which was consistent with the slope trend of the sediment yield directly measured.The rills expanded substantially primarily via head retreat and to a lesser extent via sideward erosion after receiving another 30-min rainfall.Rill erosion contributed 69.3%of the total erosion loss,and shifted the critical slope corresponding to the maximum loss from 20°to 25°.These findings demonstrate the significance of rill erosion not only in total soil loss but also in its relation to slope,as well as the effectiveness of SfM photogrammetry in quantifying interrill and rill erosion. | Tao He Yang Yang Yangzi Shi Xiaozhen Liang Suhua Fu Gege Xie Baoyuan Liu Yingna Liu | 2022 | International Soil and Water Conservation Research2022，10，3： | 0 |
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