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204篇 您的检索式:作者名="Jiali Li"
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1Prediction of cervical lymph node metastases in papillary thyroid microcarcinoma by sonographic features of the primary site显示文摘Objective: To study the sonographic features of the primary site of papillary thyroid microcarcinoma(PTMC) for the prediction of cervical lymph node metastasis during preoperative diagnosis.Methods: A total of 710 PTMC patients between 2013 and 2016 with a diagnosis of cervical lymph node metastases were reviewed.We analyzed the sonographic features of the PTMC primary site to predict ipsilateral or central lymph node metastases in univariate and multivariate models.The ratio of abutment/perimeter of the PTMC primary site was utilized to evaluate cervical lymph node status.Results: Regarding clinical characteristics, multifocality and extrathyroidal extension were associated with cervical lymph node involvement.In the multivariate regression model, calcification and the abutment/perimeter ratio of lesions were evaluated as independent factors in level Ⅵ, ipsilateral or skip cervical lymph node metastases.The cut-off value of the ratio of abutment/perimeter of the PTMC primary site(25%) was significantly correlated with cervical lymph node metastases(P = 0.000).Conclusions: Independent sonographic features, including lesion size, lesion location, calcification, and the ratio of abutment/perimeter of the primary site, were associated with cervical lymph node metastases in PTMC patients.Xi Wei Meng Wang Xiaoqing Wang Xiangqian Zheng Ying Li Yi Pan Yueguo Li Jiali Mu Yang Yu Dapeng Li Ming Gao Sheng Zhang 2019Cancer Biology & Medicine2019,16,3:22
2Osteoimmunomodulatory effects of biomaterial modification strategies on macrophage polarization and bone regeneration显示文摘Biomaterials as bone substitutes are always considered as foreign bodies that can trigger host immune responses.Traditional designing principles have been always aimed at minimizing the immune reactions by fabricating inert biomaterials.However,clinical evidence revealed that those methods still have limitations and many of which were only feasible in the laboratory.Currently,osteoimmunology,the very pioneering concept is drawing more and more attention-it does not simply regard the immune response as an obstacle during bone healing but emphasizes the intimate relationship of the immune and skeletal system,which includes diverse cells,cytokines,and signaling pathways.Properties of biomaterials like topography,wettability,surface charge,the release of cytokines,mediators,ions and other bioactive molecules can impose effects on immune responses to interfere with the skeletal system.Based on the bone formation mechanisms,the designing methods of the biomaterials change from immune evasive to immune reprogramming.Here,we discuss the osteoimmunomodulatory effects of the new modification strategies—adjusting properties of bone biomaterials to induce a favorable osteoimmune environment.Such strategies showed potential to benefit the development of bone materials and lay a solid foundation for the future clinical application.Yajuan Xie Cheng Hu Yi Feng Danfeng Li Tingting Ai Yulei Huang Xiaodan Chen Lijia Huang Jiali Tan 2020Regenerative Biomaterials2020,7,3:22
3Ubiquitination of Rheb governs growth factor-induced mTORC1 activation显示文摘Mechanistic target of rapamycin mTOR complex 1 (mTORC1)plays a key role in the integration of various environmental signals to regulate cell growth and metabolism,mTORC1 is recruited to the lysosome where it is activated by its interaction with GTP-bound Rheb GTPase.However,the regulatory mechanism of Rheb activity remains largely unknown.Here,we show that ubiquitination governs the nucleotide-bound status of Rheb.Lysosome-anchored E3 ligase RNF152 catalyzes Rheb ubiquitination and promotes its binding to the TSC complex.EGF enhances the deubiquitination of Rheb through AKT-dependent USP4 phosphorylation,leading to the release of Rheb from the TSC complex.Functionally,ubiquitination of Rheb is linked to mTORC1-mediated signaling and consequently regulates tumor growth.Thus,we propose a mechanistic model whereby Rheb-mediated mTORC1 activation is dictated by a dynamic opposing act between Rheb ubiquitination and deubiquitination that are catalyzed by RNF152 and USP4 respectively.Lu Deng Lei Chen Linlin Zhao Yan Xu Xiaoping Peng Xinbo Wang Lin Ding Jiali Jin Hongqi Teng Yanming Wang Weijuan Pan Fei Yu Lujian Liao Li Li Xin Ge Ping Wang 2019Cell Research2019,29,2:16
4Hyperthermic intraperitoneal chemotherapy for gastric cancer with peritoneal metastasis:A multicenter propensity scorematched cohort study显示文摘Objective:Systemic chemotherapy has limited efficacy in the treatment of peritoneal metastasis(PM)in gastric cancer(GC).Hyperthermic intraperitoneal chemotherapy(HIPEC)combined with complete cytoreductive surgery(CRS)has shown promising outcomes but remains controversial.The present study aimed to evaluate the safety and efficacy of HIPEC without CRS in GC patients with PM.Methods:This retrospective propensity score-matched multicenter cohort study included GC patients with PM treated with either chemotherapy alone(Cx group)or with HIPEC combined with chemotherapy(HIPEC-Cx group)in four Chinese high-volume gastric medical centers between 2010 and 2017.The primary outcomes were median survival time(MST)and 3-year overall survival(OS).Propensity score matching was performed to compensate for controlling potential confounding effects and selection bias.Results:Of 663 eligible patients,498 were matched.The MST in the Cx and HIPEC-Cx groups was 10.8 and 15.9 months,respectively[hazard ratio(HR)=0.71,95%confidence interval(95%CI),0.58-0.88;P=0.002].The 3-year OS rate was 10.1%(95%CI,5.4%-14.8%)and 18.4%(95%CI,12.3%-24.5%)in the Cx and HIPEC-Cx groups,respectively(P=0.017).The complication rates were comparable.The time to first flatus and length of hospital stay for patients undergoing HIPEC combined with chemotherapy was longer than that of chemotherapy alone(4.6±2.4 d vs.2.7±1.8 d,P<0.001;14.2±5.8 d vs.11.4±7.7 d,P<0.001),respectively.The median follow-up period was 33.2 months.Conclusions:Compared with standard systemic chemotherapy,HIPEC combined with chemotherapy revealed a statistically significant survival benefit for GC patients with PM,without compromising patient safety.Ziying Lei Jiahong Wang Zhi Li Baozhong Li Jiali Luo Xuejun Wang Jin Wang MingchenBa Hongsheng Tang Qingjun He Quanxing Liao Xiansheng Yang Tianpei Guan Han Liang Shuzhong Cui 2020Chinese Journal of Cancer Research2020,32,6:11
5Re–Os dating of molybdenite and in-situ Pb isotopes of sulfides from the Lamo Zn–Cu deposit in the Dachang tin-polymetallic ore field, Guangxi, China显示文摘The Dachang tin-polymetallic district, Guangxi,China, is one of the largest tin ore fields in the world. Both cassiterite-sulfide and Zn–Cu skarn mineralization are hosted in the Mid-Upper Devonian carbonate-rich sediments adjacent to the underlying Cretaceous Longxianggai granite(91–97 Ma). The Lamo Zn–Cu deposit is a typical skarn deposit in the district and occurs at the contact zone between the Upper Devonian limestone and the granite.The ore minerals mainly consist of sphalerite, arsenopyrite,pyrrhotite, galena, chalcopyrite, and minor molybdenite.However, the age of mineralization and source of the metals are not well constrained. In this study, we use the molybdenite Re–Os dating method and in-situ Pb isotopes of sulfides from the Lamo deposit for the first time in order to directly determine the age of mineralization and the tracing source of metals. Six molybdenite samples yielded a more accurate Re–Os isochron age of 90.0 ± 1.1 Ma(MSWD = 0.72), which is much younger than the reported garnet Sm–Nd isochron age of 95 ± 11 Ma and quartz fluid inclusions Rb–Sr isochron age of 99 ± 6 Ma. This age is also interpreted as the age of Zn–Cu skarn mineralization in the Dachang district. Further, in this study we found that in-situ Pb isotopes of sulfides from the Lamo deposit and feldspars in the district's biotite granite and granitic porphyry dikes have a narrow range and an overlap of Pb isotopic compositions(^(206) Pb/^(204) Pb =18.417–18.594,^(207) Pb/^(204) Pb = 15.641–15.746, and^(208) Pb/^(204) Pb = 38.791–39.073), suggesting that the metals were mainly sourced from Cretaceous granitic magma.Hai Zhao Wenchao Su Peng Xie Nengping Shen Jiali Cai Ming Luo Jie Li Zhian Bao 2018Acta Geochimica2018,37,3:11
6Arabidopsis PRK6 interacts specifically with AtRopGEF8/12 and induces depolarized growth of pollen tubes when overexpressed显示文摘The pollen receptor kinases (PRK) are critical regulators of pollen tube growth. The Arabidopsis genome encodes eight PRK genes, of which six are highly expressed in pollen tubes. The potential functions of AtPRK1 through AtPRK5, but not of AtPRK6,in pollen growth were analyzed in tobacco. Herein, AtPRK6 was cloned, and its function was identified. AtPRK6 was expressed specifically in pollen tubes. A yeast two-hybrid screen of AtPRK6 against 14 Arabidopsis Rop guanine nucleotide exchange factors (RopGEFs) showed that AtPRK6 interacted with AtRopGEF8 and AtRopGEF12. These interactions were confirmed in Arabidopsis mesophyll protoplasts. The interactions between AtPRK6 and AtRopGEF8/12 were mediated by the C-termini of AtRopGEF8/12 and by the juxtamembrane and kinase domain of AtPRK6, but were not dependent on the kinase activity. In addition, transient overexpression of AtPRK6::GFP in Arabidopsis protoplasts revealed that AtPRK6 was localized to the plasma membrane. Tobacco pollen tubes overexpressing AtPRK6 exhibited shorter tubes with enlarged tips. This depolarized tube growth required the kinase domain of AtPRK6 and was not dependent on kinase activity. Taken together, the results show that AtPRK6,through its juxtamembrane and kinase domains (KD), interacts with AtRopGEF8/12 and plays crucial roles in polarized growth of pollen tubes.Yuexuan Yu Jiali Song Xiaohui Tian Haiwen Zhang Legong Li Huifen Zhu 2018Science China(Life Sciences)2018,61,1:8
7MiR-181a-5p inhibits cell proliferation and migration by targeting Kras in non-small cell lung cancer A549 cells显示文摘MicroRNAs 玩在 carcinogenesis 和肿瘤的重要角色进行。肺癌症是世界范围的癌症死亡的领先的原因。在这研究, miR-181a-5p 的功能在 non-small-cell 肺癌症(NSCLC ) 被调查。结果证明 miR-181a-5p 显著地在 NSCLC 纸巾和房间线被减少。有 miR-181a-5p 的 A549 房间 transfected 的增长和迁居模仿显著地被禁止。酶活动试金结果证明 Kras 的二个有约束力的地点能被 miR-181a-5p 直接指向。而且, Kras 由在 transcriptional 和翻译层次的 miR-181a-5p 是下面调整的。调停 SiRNA 的 Kras 下面规定能模仿 miR-181a-5p 的效果在 A549 模仿房间。我们的调查结果建议 miR-181a-5p 由部分指向 Kras 在肿瘤抑制起一个潜在的作用并且在 NSCLC 病人有潜在的治疗学的申请。Zhongliang Ma Xiang Qiu Detao Wang Yanli Li Bingjie Zhang Tianwei Yuan Jiali Wei Botao Zhao Xintai Zhao Jiatao LOU Yan Jin Youxin Jin 2015Acta Biochimica et Biophysica Sinica2015,47,8:8
8Microbial reduction of uranium(Ⅵ)by Bacillus sp.Dwc-2:A macroscopic and spectroscopic study显示文摘The microbial reduction of U(VI) by Bacillus sp. dwc-2, isolated from soil in Southwest China,was explored using transmission electron microscopy(TEM), X-ray photoelectron spectroscopy(XPS) and X-ray absorption near edge spectroscopy(XANES). Our studies indicated that approximately 16.0% of U(VI) at an initial concentration of 100 mg/L uranium nitrate could be reduced by Bacillus sp. dwc-2 at pH 8.2 under anaerobic conditions at room temperature.Additionally, natural organic matter(NOM) played an important role in enhancing the bioreduction of U(VI) by Bacillus sp. dwc-2. XPS results demonstrated that the uranium presented mixed valence states(U(VI) and U(IV)) after bioreduction, which was subsequently confirmed by XANES. Furthermore, the TEM and high resolution transmission electron microscopy(HRTEM) analysis suggested that the reduced uranium was bioaccumulated mainly within the cell and as a crystalline structure on the cell wall.These observations implied that the reduction of uranium may have a significant effect on its fate in the soil environment in which these bacterial strains occur.Xiaolong Li Congcong Ding Jiali Liao Liang Du Qun Sun Jijun Yang Yuanyou Yang Dong Zhang Jun Tang Ning Liu 2017Journal of Environmental Sciences2017,29,3:8
9Efficacy and safety of low-dose interleukin-2 in combination with methotrexate in patients with active rheumatoid arthritis:a randomized,double-blind,placebo-controlled phase 2 trial显示文摘Rheumatoid arthritis(RA)is an aggressive autoimmune arthritis,and current therapies remain unsatisfactory due to low remission rate and substantially adverse effects.Low-dose interleukin-2(Ld-IL2)is potentially a therapeutic approach to further improve the disease.This randomized,double-blind,placebo-controlled trial was undertaken to evaluate the efficacy and safety of Ld-IL2 in patients with active RA.Patients were randomly assigned(1:1)to receive Ld-IL2,defined as a dose of 1 million IU,or placebo in a 12-week trial with a 12-week follow-up.Three cycles of Ld-IL2 or placebo were administered subcutaneously every other day for 2 weeks(a total of 7 doses),followed by a 2-week break.All patients received a stable dose of methotrexate(MTX).The primary outcomes were the proportion of patients achieving the ACR20,DAS28-ESR<2.6,and the change from baseline in CDAI or SDAI at week 24.Secondary endpoints included other clinical responses and safety.The primary outcomes were achieved in the perprotocol population.The improvements from baseline in CDAI and SDAI were significantly greater across time points for the LdIL2+MTX group(n=17)than for the placebo+MTX group(n=23)(P=0.018 and P=0.015,respectively).More patients achieved ACR20 response in the Ld-IL2+MTX group than those in the placebo+MTX group at week 12(70.6%vs 43.5%)and at week 24(76.5%vs 56.5%)(P=0.014).In addition,low Treg and high IL-21 were associated with good responses to Ld-IL2.Ld-IL-2 treatment was well-tolerated in this study.These results suggested that Ld-IL2 was effective and safe in RA.ClinicalTrials.gov number:NCT 02467504.Xiaoying Zhang Miao Miao Ruijun Zhang Xu Liu Xiaozhen Zhao Miao Shao Tian Liu Yuebo Jin Jiali Chen Huixin Liu Xia Zhang Yun Li Yunshan Zhou Yue Yang Ru Li Haihong Yao Yanying Liu Chun Li Yuhui Li Limin Ren Yin Su Xiaolin Sun Jing He Zhanguo Li 2022Signal Transduction and Targeted Therapy2022,7,4:7
10Ultrasound features of extranodal extension in the metastatic cervical lymph nodes of papillary thyroid cancer:a case-control study显示文摘Objective:Extranodal extension in cervical lymph nodes is an important risk factor for the progression and prognosis of papillary thyroid cancer.The purpose of this study was to identify the common and characteristic preoperative ultrasonography features that are associated with the pathologic extranodal extension of metastatic papillary thyroid carcinoma.Methods:We retrospectively assessed and compared clinicopathologic and ultrasound features between 60 papillary thyroid cancer patients with extranodal extension and 120 control patients with papillary thyroid cancer without extranodal extension.Results:With respect to the pathological N stage and clinicopathologic features,N1b stage papillary thyroid carcinomas were more frequently found in patients who were extranodal extension-positive,in comparison with those who were extranodal extension-negative(78.3%vs.63.3%,P=0.043).Extranodal extension was detected most frequently in level VI cervical lymph nodes(48.7%).In our univariate analysis of patients with papillary thyroid carcinoma,cervical lymph nodes with extranodal extension showed higher incidences of node matting,microcalcification,cystic area,aspect ratio<2,and larger diameter than those without extranodal extension(all P<0.05).Our multivariate analysis demonstrated that node matting and cystic area were independent risk factors for the presence of extranodal extension[odds ratio(OR):4.751,95%confidence interval(CI):1.212~18.626,P=0.025;OR:2.707,95%CI:1.127~6.502,P=0.026].Conclusions:Common ultrasound features may indicate the presence of extranodal extension in patients with metastatic cervical lymph nodes of papillary thyroid carcinoma.Jiali Mu Xiaofeng Liang Fangxuan Li Juntian Liu Sheng Zhang Jing Tian 2018Cancer Biology & Medicine2018,15,2:7
11Novel synthesis of fly-ash-derived Cu-loaded SAPO-34 catalysts and their use in selective catalytic reduction of NO with NH3显示文摘A combined acid–alkali hydrothermal method was used to prepare fly ash–derived SAPO-34 molecular sieves from a thermal power plant in Inner Mongolia(China).The specific surface area of the prepared fly-ash-derived SAPO-34 molecular sieves was 579 m^2 g^-1,the total pore volume was about 0.27 cm^3 g^-1,and the pore size was 0.56 nm;the molar ratios of Al2O3:P2O5:SiO2 were 1:0.86:0.45.Cu/SAPO-34 catalysts were prepared by impregnation of low-cost fly-ash-derived SAPO-34 molecular sieves as a support and tested in selective catalytic reduction with NH3(NH3-SCR).Powder X-ray diffraction(XRD),N2 adsorption–desorption,X-ray photoelectron spectroscopy(XPS),H2 temperatureprogrammed reduction(H2-TPR),NH3 temperature-programmed desorption(NH3-TPD),electron paramagnetic resonance(EPR),nuclear magnetic resonance(NMR),X-ray fluorescence analysis(XRF)and scanning electron microscopy(SEM)were used for catalyst characterization and investigation of the relationships between the catalyst structure and the catalytic activity.The actual silica:alumina ratio of the molecular sieves did not increase with increasing Cu loading,indicating that increasing the Cu loading does not change the original structure of the SAPO-34 molecular sieves.The XRF and NMR results showed that replacement by Cu results in more Si islands.The molecular sieve acidity decreased because of the increased number of Si islands.The NH3-TPD results showed that for the Cu/SAPO-34 catalysts there was a low correlation between the low-temperature activity and the amount of acidic sites.SCR activity is closely related to the location of Cu.The 4.47 Cu/SAPO-34 catalyst has the highest isolated Cu2+showed the highest NH3-SCR activities(>90%)at 250–350℃.This work opens up new avenues for recycling fly ash formed in coal-fired power plants(reducing environmental pollution)and developing low-cost SCR catalysts for NOx pollution control.Ge Li Baodong Wang Qi Sun Wayne Qiang Xu Ziran Ma Hongyan Wang Daojun Zhang Jiali Zhou 2019Green Energy & Environment2019,4,4:6
12Jixuecao(Herba Centellae Asiaticae) alleviates mesangial cell proliferation in IgA nephropathy by inducing mitofusin 2 expression显示文摘OBJECTIVE:To investigate the effect of mitofusin 2 (Mfn2) and its downstream signaling pathway on glomerular mesangial cells (GMCs) proliferation in IgA nephropathy (IgAN),as well as the mechanism of action of Jixuecao (Herba Centellae Asiaticae,HCA) in the treatment of IgAN.METHODS:Adenovirus-mediated Mfn2 gene transfection and Mfn2 expression were analyzed by real-time polymerase chain reaction (PCR) and Western blotting.IgA1 induced the proliferation of GMCs,which were then treated with HCA.Cell proliferation was detected with cell counting kit-8 (CCK-8),and Mfn2 expression was analyzed by real-time PCR and western blotting.An IgAN animal model was also established and treated with HCA.GMCs proliferation was detected by hematoxylin-eosin staining,mitochondrial structure was analyzed by electron microscopy,mitochondrial function was determined by the Clark oxygen electrode method,and the expression of Mfn2,Phospho-extracellular regulated protein kinases1/2 (P-ERK1/2),Cyclin-dependent kinase 2 (CDK2),Phospho-p27 (p-p27),and cyclin A was analyzed by Western blotting.RESULTS:In vitro,HCA inhibited GMCs in a concentration-dependent manner in association with the upregulation of Mfn2 expression.The overexpression of Mfn2 inhibited IgA1-induced GMCs proliferation and elevated the effect of HCA.In vivo,treatment with HCA could alleviate albuminuria and creatinine and GMCs proliferation.These effects were related to the upregulation of Mfn2,p-p27 and inhibition of p-ERK1/2,CDK2,and cyclinA.Mitochondrial swelling,vacuolar degeneration,and reduction of respiratory control rate were identified in IgAN,but HCA could improve the mitochondrial structure and function.CONCLUSION:HCA inhibited GMCs proliferation via the upregulation Mfn2 and the inhibition of Ras-Raf-ERK/MAPK.We revealed that changes of mitochondrial structure and function are associated with IgAN,but that HCA can improve these mitochondrial features.Chen Hongyu Du Yuanyuan Li Yayu Zeng Jiali Miao Jianxia Jiang Xue 2019Journal of Traditional Chinese Medicine2019,39,3:6
13Effects of calcination temperature on physicochemical property and activity of CuSO4/TiO2 ammonia-selective catalytic reduction catalysts显示文摘CuSO4/TiO2 catalysts with high catalytic activity and excellent resistant to SO2 and H2 O,were thought to be promising catalysts used in Selective catalytic reduction of nitrogen oxides by NH3.The performance of catalysts is largely affected by calcination temperature.Here,effects of calcination temperature on physicochemical property and catalytic activity of CuSO4/TiO2 catalysts were investigated in depth.Catalyst samples calcined at different temperatures were prepared first and then physicochemical properties of the catalyst were characterized by N2 adsorption-desorption,X-ray diffraction,thermogravimetric analysis,Raman spectra,Fourier-transform infrared spectroscopy,X-ray photoelectron spectroscopy,temperature-pro grammed desorption of NH3,temperature-programmed reduction of H2 and in situ diffuse reflectance infrared Fourier transform spectroscopy.Results revealed that high calcination temperature had three main effects on the catalyst.First,sintering and anatase transform into rutile with increase of calcination temperature,causing a decrement of specific surface area.Second,decomposition of CuSO4 under higher calcination temperature,resulting in disappears of Br(?)nsted acid sites(S-OH),which had an adverse effect on surface acidity.Third,CuO from the decomposition of CuSO4 changed surface reducibility of the catalyst and favored the process of NH3 oxidation to nitrogen oxides(NOx).Thus,catalytic activity of the catalyst calcined under high temperatures(≥600℃)decreased largely.Yanke Yu Jiali Zhang Changwei Chen Chi He Jifa Miao Huirong Li Jinsheng Chen 2020Journal of Environmental Sciences2020,32,5:6
14OsMKKK70 regulates grain size and leaf angle in rice through the OsMKK4-OsMAPK6-OsWRKY53 signaling pathway显示文摘Grain size and leaf angle are key agronomic traits that determine final yields in rice.However,the underlying molecular mechanisms are not well understood.Here we demonstrate that the Oryza sativa Mitogen Activated Protein Kinase Kinase Kinase OsMKKK70 regulates grain size and leaf angle in rice.Overexpressing OsMKKK70 caused plants to produce longer seeds.The osmkkk62/70 double mutant and the osmkkk55/62/70 triple mutant displayed significantly smaller seeds and a more erect leaf angle compared to the wild type,indicating that OsMKKK70 functions redundantly with its homologs Os MKKK62 and Os MKKK55.Biochemical analysis demonstrated that OsMKKK70 is an active kinase and that OsMKKK70 interacts with Os MKK4 and promotes Os MAPK6 phosphorylation.In addition,the osmkkk62/70 double mutant showed reduced sensitivity to Brassinosteroids(BRs).Finally,overexpressing constitutively active Os MKK4,Os MAPK6,and Os WRKY53 can partially complement the smaller seed size,erect leaf,and BR hyposensitivity of the osmkkk62/70 double mutant.Taken together,these findings suggest that OsMKKK70 might regulate grain size and leaf angle in rice by activating Os MAPK6 and that OsMKKK70,Os MKK4,Os MAPK6,and Os WRKY53 function in a common signaling pathway that controls grain shape and leaf angle.Zhiqi Liu Enyang Mei Xiaojie Tian Mingliang He Jiaqi Tang Min Xu Jiali Liu Lu Song Xiufeng Li Zhenyu Wang Qingjie Guan Qijiang Xu Qingyun Bu 2021Journal of Integrative Plant Biology2021,63,12:6
15Regulation of EGF-induced ERK/MAPK Activation and EGFR Internalization by G Protein-coupled Receptor Kinase 2显示文摘G 联合蛋白质的受体家族 ases (GRK ) 调停各种各样的 G 联合蛋白质的受体(GPCR ) 的 agonist-inducedphosphorylation 和不敏感性。我们在表皮的生长上调查 GRK2 的角色因素( EGF )受体发信号,包括 EGF-inducedextracellular 调整信号的激酶和 激活mitogen 的蛋白激酶( ERK/MAPK ),激活 andEGFR internalization.Immunoprecipitation 和免疫荧光实验在人的胚胎的肾从细胞质显示出那 EGFstimulates GRK2 绑定到复杂的 EGFR 和 GRK2 translocating 到质膜 293 个房间。西方的弄污试金证明在时间的导致 EGF 的 ERK/MAPKphosphorylation 增加 1.9-fold,1.1-fold 和 1.5 褶层(P<0.05 ) 削尖 30,60,建议 GRK2 导致 onEGF 的 ERK/MAPK 激活的规章的角色并且 120min,分别地当房间是有 GRK2 的 transfected 时。流动 cytometry 实验证明然而,在表示上的 GRK2 没在导致 EGF 的 EGFR 成为主观上有效果它增加导致收缩筋的 G 联合蛋白质的 8opioid 受体成为主观约 40%(P<0.01 ) 。总的来说,这些数据建议那 GRK2has 在导致 EGF 的 ERK/MAPK 激活的一个规章的角色,并且在表明小径的 EGFR 和 GPCR 位于 GRK2 的调节角色下面的机制在受体成为主观至少是有点不同的。Jingxia GAO Jiali LI Lan MA 2005Acta Biochimica et Biophysica Sinica2005,37,8:5
16Sarm1-mediated neurodegeneration within the enteric nervous system protects against local inflammation of the colon显示文摘Axonal degeneration is one of the key features of neu-rodegenerative disorders.In the canonical view,axonal degeneration destructs neural connections and promotes detrimental disease defects.Here,we assessed the enteric nervous system(ENS)of the mouse,nonhuman primate,and human by advanced 3D imaging.We observed the profound neurodegeneration of catecholaminergic axons in human colons with ulcerative colitis,and similarly,in mouse colons during acute dextran sulfate sodium-induced colitis.However,we unexpectedly revealed that blockage of such axonal degeneration by the Sarml deletion in mice exacerbated the colitis condition.In contrast,pharmacologic ablation or chemogenetic inhibition of catecholaminergic axons suppressed the colon inflammation.We further showed that the catecholaminergic neurotransmitter norepinephrine exerted a pro-inflammatory function by enhancing the expression of IL-17 cytokines.Together,this study demonstrated that Sarm1-mediated neurodegeneration within the ENS mitigated local inflammation of the colon,uncovering a previously-unrecognized beneficial role of axonal degeneration in this disease context.Yue Sun Qi Wang Yi Wang Wenran Ren Ying Cao Jiali Li Xin Zhou Wei Fu Jing Yang 2021Protein & Cell2021,12,8:5
17A transceptor-channel complex couples nitrate sensing to calcium signaling in Ambidopsis显示文摘Nitrate-induced Ca^(2+) signaling is crucial for the primary nitrate response in plants.However,the molecular mechanism underlying the generation of the nitrate-specific calcium signature remains unknown.We report here that a cyclic nucleotide-gated channel(CNGC)protein,CNGC15,and the nitrate transceptor(NRT1.1)constitute a molecular switch that controls calcium influx depending on nitrate levels.The expression of CNGC15 is induced by nitrate,and its protein is localized at the plasma membrane after establishment of young seedlings.We found that disruption of CNGC15 results in the loss of the nitrate-induced Ca^(2+) signature(primary nitrate response)and retards root growth,reminiscent of the phenotype observed in the nrt1.1 mutant.We further showed that CNGC15 is an active Ca^(2+)-permeable channel that physically interacts with the NRT1.1 protein in the plasma membrane.Importantly,we discovered that CNGC15-NRT1.1 interaction silences the channel activity of the heterocomplex,which dissociates upon a rise in nitrate levels,leading to reactivation of the CNGC15 channel.The dynamic interactions between CNGC15 and NRT1.1 therefore control the channel activity and Ca^(2+) influx in a nitrate-dependent manner.Our study reveals a new nutrient-sensing mechanism that utilizes a nutrient transceptor-channel complex assembly to couple nutrient status to a specific Ca^(2+) signature.Xiaohan Wang Changxin Feng LiLi Tian Congcong Hou Wang Tian Bin Hu Qian Zhang Zhijie Ren Qi Niu Jiali Song Dongdong Kong Liangyu Liu Yikun He Ligeng Ma Chengcai Chu Sheng Luan Legong Li 2021Molecular Plant2021,14,5:5
18Removal of radioactive cesium from solutions by zinc ferrocyanide显示文摘Adsorption of ^(134)Cs from aqueous solution by zinc fcrrocyanide,and the effect of experimental conditions on the adsorption were investigated.Preliminary results showed that zinc ferrocyanide was very efficient as an absorbent.Over 98% of ^(134)Cs could be removed by zinc ferrocyanide of 0.33 g·L^(-1) from ^(134)Cs solution (Co) of 3.2~160.0 kBq·L^(-1),with adsorption capacities (Q) of 9.6~463.0 kBq·g^(-1).The adsorption equilibrium time was within one hour and the suitable pH ranged 1~10.No significant differences on ^(134)Cs adsorption were observed at 0~50℃,or in solutions containing Ca^(2+),Fe^(3+),Mg^(2+),HCO_3^-,CO_3^(2-),Cl and SO_4^(2-),even though they are 1000 times higher than the anions or cations in groundwater.However,the adsorption rates decreased when solutions contained K^+ or Na^+.The adsorption process could be described by Frcundlich and Langmuir adsorption equations.LI Bing LIAO Jiali WU Jiaojiao ZHANG Dong ZHAO Jun YANG Yuanyou CHENG Qiong FENG Yue LIU Ning 2008Nuclear Science and Techniques2008,19,2:5
19Mandible exosomal ssc-mir-133b regulates tooth development in miniature swine via endogenous apoptosis显示文摘Signal transduction between different organs is crucial in the normal development of the human body. As an important medium for signal communication, exosomes can transfer important information, such as microRNAs(miRNAs), from donors to receptors.MiRNAs are known to fine-tune a variety of biological processes, including maxillofacial development; however, the underlying mechanism remains largely unknown. In the present study, transient apoptosis was found to be due to the expression of a miniature swine maxillofacial-specific miRNA, ssc-mir-133b. Upregulation of ssc-mir-133b resulted in robust apoptosis in primary dental mesenchymal cells in the maxillofacial region. Cell leukemia myeloid 1(Mcl-1) was verified as the functional target, which triggered further downstream activation of endogenous mitochondria-related apoptotic processes during tooth development.More importantly, mandible exosomes were responsible for the initial apoptosis signal. An animal study demonstrated that ectopic expression of ssc-mir-133 b resulted in failed tooth formation after 12 weeks of subcutaneous transplantation in nude mice. The tooth germ developed abnormally without the indispensable exosomal signals from the mandible.Ye Li Xinxin Wang Jiali Ren Xiaoshan Wu Guoqing Li Zhipeng Fan Chunmei Zhang Ang Li Songlin Wang 2018Bone Research2018,6,4:5
20Exogenous hydrogen sulfide inhibits apoptosis by regulating endoplasmic reticulum stress-autophagy axis and improves myocardial reconstruction after acute myocardial infarction显示文摘During acute myocardial infarction,endoplasm ic reticulum(ER)stress-induced autophagy and apoptosis have been shown as im portant pathogeneses of myocardial reconstruction.Im portantly,hydrogen sulfide(H2S),as a third endogenous gas signaling molecule,exerts strong cytoprotective effect on anti-ER stress,autophagy regulation and antiapoptosis.Here,we showed that H2 S treatm ent inhibits apoptosis by regulating ER stress-autophagy axis and im proves myocardial reconstruction after acute myocardial infarction.We found that H2S intervention im proved left ventricle function,reduced glycogen deposition in myocardial tissue mesenchyme,and inhibited apoptosis.Moreover,the expressions of fibrosis indicators(Col3a1 and Col1a2),ER stress-related proteins(CHOP and BIP/ERP78),autophagy-related proteins(Beclin and ATG5),apoptosis protein(Bax),as well as fibrosis protein Col4a3bp were all decreased after treatm ent w ith H2 S.H2 S adm inistration also m aintained MMP/TIMP balance.Mechanistically,H2S activated the PI3K/AKT signaling pathway.In addition,H2S treatm ent also reduced the expressions of ER stress-related proteins,autophagy-related proteins,and apoptins in in wtro experiments.Interestingly,activation of ER stress-autophagy axis could reverse the inhibitory effect of H2S on myocardial apoptosis.Altogether,these results suggested that exogenous H2S suppresses myocardial apoptosis by blocking ER stress-autophagy axis,which in turn reverses cardiac rem odeling after myocardial infarction.Yaling Li Maojun Liu Jiali Yi Xiong Song Xia Zheng Da Liu Sen Wang Chun Chu Jun Yang 2020Acta Biochimica et Biophysica Sinica2020,52,12:5
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