Author: Jessica.F

Dong, Yuanlin; Liang, Feng; Huang, Lining; Fang, Fang; Yang, Guang; Tanzi, Rudolph E.; Zhang, Yiying; Quan, Qimin; Xie, Zhongcong published the artcile< The anesthetic sevoflurane induces tau trafficking from neurons to microglia>, Recommanded Product: p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride, the main research area is anesthetic sevoflurane tau trafficking neuron microglia.

Accumulation and spread of tau in Alzheimer’s disease and other tauopathies occur in a prion-like manner. However, the mechanisms and downstream consequences of tau trafficking remain largely unknown. We hypothesized that tau traffics from neurons to microglia via extracellular vesicles (EVs), leading to IL-6 generation and cognitive impairment. We assessed mice and neurons treated with anesthetics sevoflurane and desflurane, and applied nanobeam-sensor technol., an ultrasensitive method, to measure tau/p-tau amounts Sevoflurane, but not desflurane, increased tau or p-tau amounts in blood, neuron culture medium, or EVs. Sevoflurane increased p-tau amounts in brain interstitial fluid. Microglia from tau knockout mice took up tau and p-tau when treated with sevoflurane-conditioned neuron culture medium, leading to IL-6 generation. Tau phosphorylation inhibitor lithium and EVs generation inhibitor GW4869 attenuated tau trafficking. GW4869 mitigated sevoflurane-induced cognitive impairment in mice. Thus, tau trafficking could occur from neurons to microglia to generate IL-6, leading to cognitive impairment.

Communications Biology published new progress about Alzheimer disease. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Recommanded Product: p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Ma, Rong; Kutchy, Naseer A.; Hu, Guoku published the artcile< Astrocyte-Derived Extracellular Vesicle-Mediated Activation of Primary Ciliary Signaling Contributes to the Development of Morphine Tolerance>, Reference of 6823-69-4, the main research area is astrocyte extracellular vesicle primary ciliary signaling morphine; Astrocyte; Extracellular vesicle; Morphine tolerance; Primary cilia; Sonic hedgehog.

Morphine is used extensively in the clin. setting owing to its beneficial effects, such as pain relief; its therapeutic utility is limited because the prolonged use of morphine often results in tolerance and addiction. Astrocytes in the brain are a direct target of morphine action and play an essential role in the development of morphine tolerance. Primary cilia and the cilia-mediated sonic hedgehog (SHH) signaling pathways have been shown to play a role in drug resistance and morphine tolerance, resp. Extracellular vesicles (EVs) play important roles as cargo-carrying vesicles mediating communication among cells and tissues. C57BL/6N mice were administered morphine for 8 days to develop tolerance, which was determined using the tail-flick and hot plate assays. EVs were separated from astrocyte-conditioned media using either size exclusion chromatog. or ultracentrifugation approaches, followed by characterization of EVs using nanoparticle tracking anal. for EV size distribution and number, Western blotting for EV markers, and electron microscopy for EV morphol. Astrocytes were treated with EVs for 24 h, followed by assessing primary cilia by fluorescent immunostaining for primary cilia markers (ARL13B and acetylated tubulin). Morphine-tolerant mice exhibited an increase in primary cilia length and percentage of ciliated astrocytes. The levels of SHH protein were upregulated in morphine-stimulated astrocyte-derived EVs. SHH on morphine-stimulated astrocyte-derived EVs activated SHH signaling in astrocytes through primary cilia. Our in vivo study demonstrated that inhibition of either EV release or primary cilia prevents morphine tolerance in mice. EV-mediated primary ciliogenesis contributes to the development of morphine tolerance.

Biological Psychiatry published new progress about ADP ribosylation factor-like protein ARL13B Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Reference of 6823-69-4.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Miao, Zhuang; Li, Yuanyuan; Mao, Fengbiao; Zhang, Jianghong; Sun, Zhong Sheng; Wang, Yan published the artcile< Prenatal witness stress induces intergenerational anxiety-like behaviors and altered gene expression profiles in male mice>, Related Products of 452-06-2, the main research area is prenatal witness stress intergenerational anxiety gene expression profile; Anxiety; Prenatal stress; Psychological stress; Sex difference; Stress resilience.

Prenatal cues imposed on an organism can exert long-term and even cross-generational influences on the physiol. and behaviors. To date, numerous rodent models have been developed to mimic the effects of prenatal phys. stress on offspring. Whether psychol. stress during gestation exerts adverse influences on offspring remains investigated. Here, we report that prenatal witnessing the defeat process of the mated partner induces anxiety-like behaviors in F1 male, but not female offspring. These abnormal behaviors were not present in the F2 generation, indicating a sex-specific intergenerational effects. Genome-wide transcriptional profiling identified 71 up-regulated and 120 down-regulated genes shared in F0 maternal and F1 male hippocampus. F0 and F1 hippocampi also shared witness stress-sensitive and -resistant genes. Whole transcriptome comparison reveals that F1 dentate gyrus showed differential expression profiles from hippocampus. Few differentially expressed genes were identified in the dentate gyrus of F1 stress female mice, explaining why females were resistant to the stress. Finally, candidate drugs as the potential treatment for psychol. stress were predicted according to transcriptional signatures, including the histone deacetylase inhibitor and dopamine receptor agonist. Our work provides a new model for better understanding the mol. basis of prenatal psychol. stress, highlighting the complexity of stress and sex factors on emotion and behaviors.

Neuropharmacology published new progress about Adrenoceptor agonists. 452-06-2 belongs to class imidazoles-derivatives, and the molecular formula is C5H5N5, Related Products of 452-06-2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

McCann, James V.; Liu, Amber; Musante, Luca; Erdbrugger, Uta; Lannigan, Joanne; Dudley, Andrew C. published the artcile< A miRNA signature in endothelial cell-derived extracellular vesicles in tumor-bearing mice>, Application of C30H30Cl2N6O2, the main research area is miRNA signature endothelial cellderived extracellular vesicle tumorbearing.

Extracellular vesicles (EVs) play important roles in tumor progression by altering immune surveillance, promoting vascular dysfunction, and priming distant sites for organotropic metastases. The miRNA expression patterns in circulating EVs are important diagnostic tools in cancer. However, multiple cell types within the tumor microenvironment (TME) including cancer cells and stromal cells (e.g. immune cells, fibroblasts, and endothelial cells, ECs) contribute to the pool of circulating EVs. Because EVs of different cellular origins have different functional properties, auditing the cargo derived from cell type-specific EVs in the TME is essential. Here, we demonstrate that a murine EC lineage-tracing model (Cdh5-CreERT2:ZSGreenl/s/l mice) can be used to isolate EC-derived extracellular vesicles (EC-EVs). We further show that purified ZSGreen+ EVs express expected EV markers, they are transferable to multiple recipient cells, and circulating EC-EVs from tumor-bearing mice harbor elevated levels of specific miRNAs (e.g. miR-30c, miR-126, miR-146a, and miR-125b) compared to non tumor-bearing counterparts. These results suggest that, in the tumor setting, ECs may systemically direct the function of heterotypic cell types either in the circulation or in different organ micro-environments via the cargo contained within their EVs.

Scientific Reports published new progress about Alcohols, C8-10, ethoxylated propoxylated Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Application of C30H30Cl2N6O2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Xian, Xian; Cai, Li-Li; Li, Yang; Wang, Ran-Chao; Xu, Yu-Hao; Chen, Ya-Jie; Xie, Yu-Hang; Zhu, Xiao-Lan; Li, Yue-Feng published the artcile< Neuron secrete exosomes containing miR-9-5p to promote polarization of M1 microglia in depression>, Electric Literature of 6823-69-4, the main research area is neuron secrete exosome miR9 5p m1 microglia polarization depression; Depression; Exosomes; Microglial polarization; Neuroinflammation; miR-9-5p.

Neuroinflammation is an important component mechanism in the development of depression. Exosomal transfer of MDD-associated microRNAs (miRNAs) from neurons to microglia might exacerbate neuronal cell inflammatory injury. By sequence identification, we found significantly higher miR-9-5p expression levels in serum exosomes from MDD patients than healthy control (HC) subjects. Then, in cultured cell model, we observed that BV2 microglial cells internalized PC12 neuron cell-derived exosomes while successfully transferring miR-9-5p. MiR-9-5p promoted M1 polarization in microglia and led to over releasing of proinflammatory cytokines, such as interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α), which exacerbated neurol. damage. Furthermore, we identified suppressor of cytokine signaling 2 (SOCS2) as a direct target of miR-9-5p. Overexpression of miR-9-5p suppressed SOCS2 expression and reactivated SOCS2-repressed Janus kinase (JAK)/signal transducer and activator of transcription 3 (STAT3) pathways. Consistently, we confirmed that adeno-associated virus (AAV)-mediated overexpression of miR-9-5p polarized microglia toward the M1 phenotype and exacerbated depressive symptoms in chronic unpredictable mild stress (CUMS) mouse mode. MiR-9-5p was transferred from neurons to microglia in an exosomal way, leading to M1 polarization of microglia and further neuronal injury. The expression and secretion of miR-9-5p might be novel therapeutic targets for MDD.

Journal of Nanobiotechnology published new progress about Antidepressants. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Electric Literature of 6823-69-4.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Li, Na; Yang, Hong; Liu, Ke; Zhou, Liwei; Huang, Yuting; Cao, Danyan; Li, Yanlian; Sun, Yaoliang; Yu, Aisong; Du, Zhiyan; Yu, Feng; Zhang, Ying; Wang, Bingyang; Geng, Meiyu; Li, Jian; Xiong, Bing; Xu, Shilin; Huang, Xun; Liu, Tongchao published the artcile< Structure-Based Discovery of a Series of NSD2-PWWP1 Inhibitors>, Category: imidazoles-derivatives, the main research area is imidazole preparation SAR antitumor activity inhibitor.

A series of NSD2-PWWP1 inhibitors I (R = 4-cyanophenyl, 4-cyanonaphthalen-1-yl, 8-cyanoquinolin-5-yl, etc.; R1 = H, OMe, F, Cl, CF3; R2 = H, Me, OMe; R3 = aminomethyl, CHO, 4-aminopiperidin-1-yl, etc.), and further structure-based optimization resulted in a potent inhibitor compound I (R = 4-cyanonaphthalen-1-yl; R1 = R2 = Me; R3 = 4-aminopiperidin-1-yl) (II), that has high selectivity toward the NSD2-PWWP1 domain were reported. The detailed biol. evaluation revealed that compound II can bind to NSD2-PWWP1 and then affect the expression of genes regulated by NSD2. The current discovery will provide a useful chem. probe to the future research in understanding the specific regulation mode of NSD2 by PWWP1 recognition and pave the way to develop potential drugs targeting NSD2 protein.

Journal of Medicinal Chemistry published new progress about Amines Role: PAC (Pharmacological Activity), PKT (Pharmacokinetics), PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), THU (Therapeutic Use), BIOL (Biological Study), RACT (Reactant or Reagent), PREP (Preparation), USES (Uses). 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Category: imidazoles-derivatives.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Liao, Wen; Ning, Yu; Xu, Hai-Jia; Zou, Wen-Zhong; Hu, Jing; Liu, Xiang-Zhong; Yang, Yi; Li, Zhang-Hua published the artcile< BMSC-derived exosomes carrying microRNA-122-5p promote proliferation of osteoblasts in osteonecrosis of the femoral head>, COA of Formula: C30H30Cl2N6O2, the main research area is osteonecrosis microRNA osteoblast proliferation femoral head; RTK/Ras/MAPK signaling pathway; bone marrow mesenchymal stem cell; exosome; microRNA-122-5p; osteonecrosis of the femoral head; sprouty2.

The current study aims to explore the role of bone marrow (BM) MSCs (BMSCs)-derived exosomes carrying microRNA-122-5p (miR-122-5p) in ONFH rabbit models. First, rabbit models with ONFH were established. ONFH-related miRNAs were screened using the Gene Expression Omnibus (GEO) database. A gain-of-function study was performed to investigate the effect of miR-122-5p on osteoblasts and BMSCs and effects of exosomes carrying miR-122-5p on ONFH. Co-culture experiments for osteoblasts and BMSCs were performed to examine the role of exosomal miR-122-5p in osteoblast proliferation and osteogenesis. The target relationship between miR-122-5p and Sprouty2 (SPRY2) was tested. MiR-122, significantly decreased in ONFH in the GSE89587 expression profile, was screened. MiR-122-5p neg. regulated SPRY2 and elevated the activity of receptor tyrosine kinase (RTK), thereby promoting the proliferation and differentiation of osteoblasts. In vivo experiments indicated that bone mineral d. (BMD), trabecular bone volume (TBV), and mean trabecular plate thickness (MTPT) of femoral head were increased after over-expressing miR-122-5p in exosomes. Significant healing of necrotic femoral head was also observed Exosomes carrying over-expressed miR-122-5p attenuated ONFH development by down-regulating SPRY2 via the RTK/Ras/mitogen-activated protein kinase (MAPK) signaling pathway. Findings in the present study may provide miR-122-5p as a novel biomarker for ONFH treatment.

Clinical Science published new progress about Animal gene, HLA-DR Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, COA of Formula: C30H30Cl2N6O2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Yang, Jin; Cao, Lu-Lu; Wang, Xi-Peng; Guo, Wei; Guo, Ruo-Bing; Sun, Yu-Qin; Xue, Teng-Fei; Cai, Zhen-Yu; Ji, Juan; Cheng, Hong; Sun, Xiu-Lan published the artcile< Neuronal extracellular vesicle derived miR-98 prevents salvageable neurons from microglial phagocytosis in acute ischemic stroke>, Formula: C30H30Cl2N6O2, the main research area is ischemic stroke neuron extracellular vesicle microRNA98 microglia phagocytosis.

Extracellular vesicles (EVs), as a novel intercellular communication carrier transferring cargo microRNAs (miRNAs), could play important roles in the brain remodeling process after ischemic stroke. However, the detailed mechanisms involved in EVs derived miRNAs-mediated cellular interactions in the brain remain unclear. Several studies indicated that microRNA-98 (miR-98) might participate in the pathogenesis of ischemic stroke. Here, we showed that expression of miR-98 in penumbra field kept up on the first day but dropped sharply on the 3rd day after ischemic stroke in rats, indicating that miR-98 could function as an endogenous protective factor post-ischemia. Overexpression of miR-98 targeted inhibiting platelet activating factor receptor-mediated microglial phagocytosis to attenuate neuronal death. Furthermore, we showed that neurons transferred miR-98 to microglia via EVs secretion after ischemic stroke, to prevent the stress-but-viable neurons from microglial phagocytosis. Therefore, we reveal that EVs derived miR-98 act as an intercellular signal mediating neurons and microglia communication during the brain remodeling after ischemic stroke. The present work provides a novel insight into the roles of EVs in the stroke pathogenesis and a new EVs-miRNAs-based therapeutic strategy for stroke.

Cell Death & Disease published new progress about Allograft inflammatory factor 1 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Formula: C30H30Cl2N6O2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Hu, Miao; Lin, Zidong; Li, Jianxiao; Wu, Wanqing; Jiang, Huanfeng published the artcile< Palladium-catalyzed ionic liquid-accelerated oxidative annulation of acetylenic oximes with unactivated long-chain enols>, Formula: C6H9ClN2O2, the main research area is isoxazole regioselective green preparation; oxime acetylenic enol oxidative annulation alkylation tandem palladium catalyst; allyl alc oxime oxidative annulation allylation tandem palladium catalyst.

A method was developed for the synthesis of isoxazoles such as I [R1 = H, Me, 4-BrC6H4, etc.; R2 = Pr, cyclopentyl, 4-MeC6H4, etc.; R3 = H, Br, n-Pr, etc.; X = CH2, O; n = 1, 2, 3, 4, 5] via palladium-catalyzed ionic liquid-accelerated oxidative cascade annulation/functionalization of acetylenic oximes with unactivated long chain enols/allylic alcs. under aerobic conditions. This newly developed protocol provides the rapid and straightforward synthetic strategy for the assembly of structurally diverse isoxazole architectures under mild conditions with high atom- and step-economy and exceptional functional group tolerance. Notably, the ionic liquid acts as not only a solvent in the reaction but also provided the excess halide ions to eliminate hydrochloride from acetylenic oximes. Moreover, this catalytic system could be recycled up to eight times and reused without significant loss of the catalytic activity.

Green Chemistry published new progress about Alcohols, unsaturated Role: RCT (Reactant), RACT (Reactant or Reagent). 700370-07-6 belongs to class imidazoles-derivatives, and the molecular formula is C6H9ClN2O2, Formula: C6H9ClN2O2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Ohba, Masashi; Mukaihira, Takafumi; Fujii, Tozo published the artcile< Preparatory study for the synthesis of the starfish alkaloid imbricatine. Syntheses of 5-arylthio-3-methyl-L-histidines>, HPLC of Formula: 1003-21-0, the main research area is asym synthesis arylthiomethylhistidine; histidine arylthio asym synthesis; formal synthesis starfish alkaloid imbricatine; ovothiol A C formal synthesis.

Chiral syntheses of 3-methyl-5-(arylthio)-L-histidines I (R = Ph, 1-naphthyl), selected as models for the asteroid alkaloid imbricatine, have been accomplished through a 10-step route starting from 4(5)-bromoimidazole (II). The key steps involved were methylation of II, hydroxymethylation of 4-bromo-1-methyl-1H-imidazole, replacement of the 4-bromo group by an arylthio group, and introduction of a chiral α-amino acid moiety into the chlorides III by the bislactim ether method. The synthesis of 4-(4-methoxybenzyl)thio analog III (R = 4-MeOC6H4CH2), carried out in a similar manner, concluded formal syntheses of ovothiols A and C.

Chemical & Pharmaceutical Bulletin published new progress about Stereoselective synthesis. 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, HPLC of Formula: 1003-21-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem