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| 1 | Synthesis and luminescence properties of rare earth ternary complexes consisting of Tb(Ⅲ), β-diketones and 1,10-phenanthroline (phen)显示文摘In order to study the luminescent properties of ternary rare earth complexes with β-diketone ligand, three new β-diketone ligands, 1-phenyl-3-(p-phenylethynylphenyl)-1,3-propanedione(HPPP), 1-(2-thienyl)-3-(p-phenylethynylphenyl)-1,3-propanedione (HTPP) and 1-(2-furyl)-3-(p-phenylethynylphenyl)-1,3-propanedione (HFPP), were synthesized by Sonogashira coupling reaction and Claisen condensa- tion. Three new ternary rare earth complexes, TbL3phen (L = PPP, TPP, or FPP), were synthesized by the reaction of rare earth chloride TbCl3,1,10-phenanthroline (phen) with HPPP, HTPP, or HFPP respectively, in alcohol solution. The compositions were characterized by means of elemental analysis, chemical analysis, and IR spectra. Luminescent properties of the three new complexes have been studied. The results show that the ternary Tb(III) complexes only emit the weak fluorescence of the Tb(III) ion, which reveals the triplet state energy of the ligands does not match well with the excited state vibrating energy of Tb3+ ion. | LIU Xingwang WANG Na SUO Quanling | 2008 | Rare Metals2008，27，6： | 8 |
| 2 | Donepezil,a drug for Alzheimer’s disease,promotes oligodendrocyte generation and remyelination显示文摘Myelin sheaths play important roles in neuronal functions.In the central nervous system(CNS),the myelin is formed by oligodendrocytes(OLs),which are differentiated from oligodendrocyte precursor cells(OPCs).In CNS demyelinating disorders such as multiple sclerosis(MS),the myelin sheaths are damaged and the remyelination process is hindered.Small molecule drugs that promote OPC to OL differentiation and remyelination may provide a new way to treat these demyelinating diseases.Here we report that donepezil,an acetylcholinesterase inhibitor(AChEI)developed for the treatment of Alzheimer's disease(AD);significantly promotes OPC to OL differentiation.Interestingly,other AChEls,including huperzine A,rivastigmine,and tacrine,have no such effect indicating that donepezil's effect in promoting OPC differentiation is not dependent on the inhibition of AChE.Donepezil also facilitates the formation of myelin sheaths in OPC-DRG neuron co-culture.More interestingly,donepezil also promotes the repair of the myelin sheaths in vivo and provides significant therapeutic effect in a cuprizone-mediated demyelination animal model.Donepezil is a drug that has been used to treat AD safely for many years;our findings suggest that it might be repurposed to treat CNS demyelinating diseases such as MS by promoting OPC to OL differentiation and remyelination. | Xue Cui Yu-e Guo Jia-hui Fang Chang-jie Shi Na Suo Ru Zhang Xin Xie | 2019 | Acta Pharmacologica Sinica2019，40，11： | 7 |
| 3 | Reversible Al^(3+) storage mechanism in anatase TiO_(2) cathode material for ionic liquid electrolyte-based aluminum-ion batteries显示文摘Rechargeable aluminum ion battery(AIB) with high theoretical specific capacity, abundant elements and low cost engages considerable attention as a promising next generation energy storage and conversion system. Nevertheless, to date, one of the major barriers to pursuit better AIB is the limited applicable cathode materials with the ability to store aluminum highly reversibly. Herein, a highly reversible AIB is proposed using mesoporous TiO2 microparticles(M-TiO2) as the cathode material. The improved performance of Ti O2/Al battery is ascribed to the high ionic conductivity and material stability, which is caused by the stable architecture with a mesoporous microstructure and no random aggregation of secondary particles. In addition, we conducted detailed characterization to gain deeper understanding of the Al^(3+) storage mechanism in anatase Ti O2 for AIB. Our findings demonstrate clearly that Al^(3+)can be reversibly stored in anatase TiO2 by intercalation reactions based on ionic liquid electrolyte. Especially, DFT calculations were used to investigate the accurate insertion sites of aluminum ions in M-Ti O2 and the volume changes of M-TiO2 cells during discharging. As for the controversial side reactions in AIBs, in this work, by normalized calculation, we confirm that M-Ti O2 alone participate in the redox reaction. Moreover, cyclic voltammetry(CV) test was performed to investigate the pseudocapacitive behavior. | Na Zhu Feng Wu Zhaohua Wang Liming Ling Haoyi Yang Yaning Gao Shuainan Guo liumin Suo Hong Li Huajie Xu Ying Bai Chuan Wu | 2020 | Journal of Energy Chemistry2020，29，12： | 3 |
| 4 | In-depth analysis of the genome of Trypanosoma evansi, an etiologic agent of surra显示文摘Trypanosoma evansi is the causative agent of the animal trypanosomiasis surra, a disease with serious economic burden worldwide. The availability of the genome of its closely related parasite Trypanosoma brucei allows us to compare their genetic and evolutionarily shared and distinct biological features. The complete genomic sequence of the T. evansi YNB strain was obtained using a combination of genomic and transcriptomic sequencing, de novo assembly, and bioinformatic analysis. The genome size of the T. evansi YNB strain was 35.2 Mb, showing 96.59% similarity in sequence and 88.97% in scaffold alignment with T. brucei. A total of 8,617 protein-coding genes, accounting for 31% of the genome, were predicted. Approximately 1,641 alternative splicing events of 820 genes were identified, with a majority mediated by intron retention, which represented a major difference in post-transcriptional regulation between T. evansi and T. brucei. Disparities in gene copy number of the variant surface glycoprotein, expression site-associated genes, microRNAs, and RNA-binding protein were clearly observed between the two parasites. The results revealed the genomic determinants of T. evansi, which encoded specific biological characteristics that distinguished them from other related trypanosome species. | Lili Zheng Ning Jiang Xiaoyu Sang Naiwen Zhang Kai Zhang Hongyu Chen Na Yang Ying Feng Ran Chen Xun Suo Qijun Chen | 2019 | Science China(Life Sciences)2019，62，3： | 1 |
| 5 | Decarboxylated osteocalcin,a possible drug for type 2 diabetes,triggers glucose uptake in MG63 cells显示文摘BACKGROUND Uncarboxylated osteocalcin(GluOC)has been reported to improve glucose metabolism,prevent type 2 diabetes,and decrease the severity of obesity in mice with type 2 diabetes.GluOC can increase glucose uptake in a variety of cells.Glucose metabolism is the main source of energy for osteoblast proliferation and differentiation.We hypothesized that decarboxylated osteocalcin(dcOC),a kind of GluOC,can increase glucose uptake in MG63 cells(osteoblast-like osteosarcoma cells)and influence their proliferation and differentiation.AIM To investigate the effects of dcOC on glucose uptake in human osteoblast-like osteosarcoma cells and the possible signaling pathways involved.METHODS MG63 cells(human osteoblast-like osteosarcoma cells)were treated with dcOC(0,0.3,3,10,or 30 ng/mL)for 1 and 72 h,and glucose uptake was measured by flow cytometry.The effect of dcOC on cell proliferation was measured with a CCK-8 assay,and alkaline phosphatase(ALP)enzyme activity was measured.PI3K was inhibited with LY294002,and hypoxia-inducible factor 1 alpha(HIF-1α)was silenced with siRNA.Then,GPRC6A(G protein-coupled receptor family C group 6 subtype A),total Akt,phosphorylated Akt,HIF-1α,and glucose transporter 1(GLUT1)levels were measured by Western blot to elucidate the possible pathways by which dcOC modulates glucose uptake.RESULTS The glucose uptake of MG63 cells was significantly increased compared with that of the paired control cells after short-term(1 h)treatment with dcOC at different concentrations(0.3,3,and 10 ng/mL groups,P<0.01;30 ng/mL group,P<0.05).Glucose uptake of MG63 cells was significantly increased compared with that of the paired control cells after long-term(72 h)treatment with dcOC at different concentrations(0.3,3,and 10 ng/mL groups,P<0.01;30 ng/mL group,P<0.05).DcOC triggered Akt phosphorylation in a dose-dependent manner,and the most effective stimulatory concentration of dcOC for short-term(1 h)was 3 ng/mL(P<0.01).LY294002 abolished the dcOC-mediated(1 h)promotion of Akt phosphorylation and glucose uptake without affecting GLUT1 protein expression.Long-term dcOC stimulation triggered Akt phosphorylation and increased the protein levels of HIF-1α,GLUT1,and Runx2 in a dose-dependent manner.Inhibition of HIF-1αwith siRNA abolished the dcOC-mediated glucose uptake and substantially decreased GLUT1 protein expression.DcOC interven-tion promoted cell proliferation in a time-and dose-dependent manner as determined by the CCK-8 assay.Treatment with both 3 ng/mL and 10 ng/mL dcOC affected the ALP activity in MG63 cells after 72 h(P<0.01).CONCLUSION Short-and long-term dcOC treatment can increase glucose uptake and affect proliferation and ALP activity in MG63 cells.This effect may occur through the PI3K/Akt,HIF-1α,and GLUT1 signaling factors. | Shi Jin Xiao-Cen Chang Jing Wen Jing Yang Na Ao Ke-Ying Zhang Lin-Na Suo Jian Du | 2021 | World Journal of Diabetes2021，12，7： | 1 |
| 6 | 原肠运动中期细胞谱系与细胞命运的空间转录组特征显示文摘哺乳动物的早期胚胎发育,特别是着床后原肠运动过程中,多能性干细胞通过多个层次的细胞命运决定,形成了胚胎器官发生、形态建成的整个发育蓝图,是生命体最重要的分子事件之一。 | Guangdun Peng Shengbao Suo Jun Chen Weiyang Chen Chang Liu Fang Yu Ran Wang Shirui Chen Na Sun Guizhong Cui Lu Song Patrick P.L.Tam 韩敬东 景乃禾 | 2017 | 科学新闻2017，0，4： | 0 |
| 7 | The aminosteroid U73122 promotes oligodendrocytes generation and myelin formation显示文摘Oligodendrocytes(OLs)are glial cells that ensheath neuronal axons and form myelin in the central nervous system(CNS).OLs are differentiated from oligodendrocyte precursor cells(OPCs)during development and myelin repair,which is often insufficient in the latter case in demyelinating diseases such as multiple sclerosis(MS).Many factors have been reported to regulate OPC-to-OL differentiation,including a number of G protein-coupled receptors(GPCRs).In an effort to search pathways downstream of GPCRs that might be involved in OPC differentiation,we discover that U73122,a phosphoinositide specific phospholipase C(PI-PLC)inhibitor,dramatically promotes OPC-to-OL differentiation and myelin regeneration in experimental autoimmune encephalomyelitis model.Unexpectedly,U73343,a close analog of U73122 which lacks PI-PLC inhibitory activity also promotes OL differentiation,while another reported PI-PLC inhibitor edelfosine does not have such effect,suggesting that U73122 and U73343 enhance OPC differentiation independent of PLC.Although the structures of U73122 and U73343 closely resemble 17β-estradiol,and both compounds do activate estrogen receptors Erαand Erβwith low efficacy and potency,further study indicates that these compounds do not act through Erαand/or Erβto promote OPC differentiation.RNA-Seq and bioinformatic analysis indicate that U73122 and U73343 may regulate cholesterol biosynthesis.Further study shows both compounds increase 14-dehydrozymostenol,a steroid reported to promote OPC differentiation,in OPC culture.In conclusion,the aminosteroids U73122 and U73343 promote OPC-to-OL generation and myelin formation by regulating cholesterol biosynthesis pathway. | Shi-hao Cui Na Suo Ying Yang Xuan Wu Shi-meng Guo Xin Xie | 2024 | Acta Pharmacologica Sinica2024，45，3： | 0 |
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