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  1. Article ; Online: Copper Complexes with N,N,N-Tridentate Quinolinyl Anilido-Imine Ligands: Synthesis and Their Catalytic Application in Chan-Lam Reactions.

    Zhou, Xiaoyu / Yang, Jiaxin / Hao, Zhiqiang / Han, Zhangang / Lin, Jin / Lu, Guo-Liang

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 21

    Abstract: The treatment of 2-(ArNC(H)) ... ...

    Abstract The treatment of 2-(ArNC(H))C
    Language English
    Publishing date 2023-11-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28217406
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Chan-Lam Reaction and Lewis Acid Promoted 1,3-Rearrangement of N-O Bonds to Prepare

    Bi, Hong-Yan / Wu, Qing-Yan / Zhou, Xiao-Mei / Xu, Hui-Juan / Liang, Cui / Mo, Dong-Liang / Ma, Xiao-Pan

    Organic letters

    2022  Volume 24, Issue 25, Page(s) 4675–4679

    Abstract: We describe the difunctionalization of arylboronic acids to prepare ... ...

    Abstract We describe the difunctionalization of arylboronic acids to prepare various
    Language English
    Publishing date 2022-06-17
    Publishing country United States
    Document type Journal Article
    ISSN 1523-7052
    ISSN (online) 1523-7052
    DOI 10.1021/acs.orglett.2c01827
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Photoinduced Transition-Metal-Free Chan-Evans-Lam-Type Coupling: Dual Photoexcitation Mode with Halide Anion Effect.

    Zhou, Zijun / Kweon, Jeonguk / Jung, Hoimin / Kim, Dongwook / Seo, Sangwon / Chang, Sukbok

    Journal of the American Chemical Society

    2022  Volume 144, Issue 20, Page(s) 9161–9171

    Abstract: Herein, we report a photoinduced transition-metal-free C(aryl)-N bond formation between 2,4,6-tri(aryl)boroxines or arylboronic acids as an aryl source and 1,4,2-dioxazol-5-ones (dioxazolones) as an amide coupling partner. Chloride anion, either ... ...

    Abstract Herein, we report a photoinduced transition-metal-free C(aryl)-N bond formation between 2,4,6-tri(aryl)boroxines or arylboronic acids as an aryl source and 1,4,2-dioxazol-5-ones (dioxazolones) as an amide coupling partner. Chloride anion, either generated
    MeSH term(s) Anions ; Catalysis ; Electron Transport ; Transition Elements
    Chemical Substances Anions ; Transition Elements
    Language English
    Publishing date 2022-05-12
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.2c03343
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Improvement of the quality of cured rabbit meat product (Chan Si Tu) using Staphylococcus xylosus as starter culture

    Jiamin Zhang / Zhou-lin Wu / Wei Wang / Bo Hou / Ting Bai / Yu Wen / Lili Ji / Rui Zhang

    World Rabbit Science, Vol 31, Iss 3, Pp 191-

    2023  Volume 200

    Abstract: ... characteristics of a Sichuan cured rabbit product (Chan Si Tu). Physicochemical analyses showed that meats ... the complexity of the product. Thus, inoculation with S. xylosus in the cured rabbit meat product (Chan Si Tu ...

    Abstract Starter cultures can help improve the quality and safety of traditional fermented meat products. This work was conducted to evaluate the effects of the inoculum of Staphylococcus xylosus on the quality characteristics of a Sichuan cured rabbit product (Chan Si Tu). Physicochemical analyses showed that meats inoculated with S. xylosus had a significant increase in lightness, redness, cohesiveness and chewiness (P<0.05). In addition, a lower content of nitrite, diethylnitrosamine and histamine, was observed in the inoculated samples (P<0.05). The thiobarbituric acid reactive substances (TBARS) value in the S. xylosus incubation group was 0.108±0.004 mg/kg, which was significantly lower than that in the control group (P<0.01). Interestingly, a lower TBARS value was observed in the incubation samples through storage. Furthermore, solid-phase microextraction gas chromatography-mass spectrometry (SPME-GC-MS) analysis identified a total of 73 volatiles, and the species and abundance of theses volatile compounds were higher in the samples with added S. xylosus, and 12 with odour activity value>1 were proposed as the most odouractive compounds that enhanced the complexity of the product. Thus, inoculation with S. xylosus in the cured rabbit meat product (Chan Si Tu) can effectively enhance the product quality.
    Keywords cured rabbit product ; starter culture ; staphylococcus xylosus ; physicochemical properties ; volatile flavor compounds ; Animal culture ; SF1-1100 ; Veterinary medicine ; SF600-1100
    Language English
    Publishing date 2023-09-01T00:00:00Z
    Publisher Universitat Politècnica de València
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article: Photoinduced Transition-Metal-Free Chan–Evans–Lam-Type Coupling: Dual Photoexcitation Mode with Halide Anion Effect

    Zhou, Zijun / Kweon, Jeonguk / Jung, Hoimin / Kim, Dongwook / Seo, Sangwon / Chang, Sukbok

    Journal of the American Chemical Society. 2022 May 12, v. 144, no. 20

    2022  

    Abstract: ... conditions. The synthetic virtue of this transition-metal-free Chan–Evans–Lam-type coupling was demonstrated ...

    Abstract Herein, we report a photoinduced transition-metal-free C(aryl)–N bond formation between 2,4,6-tri(aryl)boroxines or arylboronic acids as an aryl source and 1,4,2-dioxazol-5-ones (dioxazolones) as an amide coupling partner. Chloride anion, either generated in situ by photodissociation of chlorinated solvent molecules or added separately as an additive, was found to play a critical cooperative role, thereby giving convenient access to a wide range of synthetically versatile N-arylamides under mild photo conditions. The synthetic virtue of this transition-metal-free Chan–Evans–Lam-type coupling was demonstrated by large-scale reactions, synthesis of ¹⁵N-labeled arylamides, and applicability toward biologically relevant compounds. On the basis of mechanistic investigations, two distinctive photoexcitations are proposed to function in the current process, in which the first excitation involving chloro-boron adduct facilitates the transition-metal-free activation of dioxazolones by single electron transfer (SET), and the second one enables the otherwise-inoperative 1,2-aryl migration of the thus-formed N-chloroamido-borate adduct.
    Keywords electron transfer ; photolysis ; solvents
    Language English
    Dates of publication 2022-0512
    Size p. 9161-9171.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.2c03343
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: He-Chan Pian inhibits the metastasis of non-small cell lung cancer via the miR-205-5p-mediated regulation of the GREM1/Rap1 signaling pathway.

    Kan, Jun / Fu, Biqian / Zhou, Ruisheng / Zhou, Daihan / Huang, Yufang / Zhao, Hongwei / Zhang, Yunlong / Rong, Yuming / Dong, Jun / Xia, Liangping / Liu, Shanshan / Huang, Qiuling / Wang, Nannan / Ning, Na / Zhang, Bei / Zhang, Enxin

    Phytomedicine : international journal of phytotherapy and phytopharmacology

    2021  Volume 94, Page(s) 153821

    Abstract: Background: He-Chan Pian (HCP), a traditional Chinese medicinal formula, shows promising ...

    Abstract Background: He-Chan Pian (HCP), a traditional Chinese medicinal formula, shows promising efficacy for the treatment of lung cancer.
    Purpose: Gremlin (GREM1) plays an important role in gastrointestinal tumor metastasis; however, little is known about its role in lung cancer. We determined the mechanism underlying the protective effect of HCP against metastasis in a mouse model of non-small cell lung cancer (NSCLC) and demonstrated the role of GREM1.
    Methods: Ultra-high performance liquid chromatography-mass spectrometry (UPLC-MS) was used to analyze the herbal components and metabolites from the serum of HCP-treated mice. The tumor, liver, and kidney were examined histologically, and the antitumor effects and toxicity of HCP were evaluated. Levels of epithelial-mesenchymal transition (EMT)-associated transcription factors were measured using western blotting in tumors from five groups (i.e., model, HCP [L], HCP [M], HCP [H], and positive control [cisplatin, DDP]). Differentially expressed proteins and genes were identified using protein chip and sequencing analyzes, respectively. Short hairpin RNAs and overexpression plasmids were introduced into cells to evaluate the effects of GREM1. To evaluate proliferation, migration, and invasion, the expression levels of proteins involved in the Rap1 pathway and EMT were measured in vitro. Xenograft tumors with overexpression-GREM1 (OE-GREM1) in A549 cells were examined for cell proliferation. A dual-luciferase assay was performed to verify the direct interaction of GREM1 with miR-205-5p in lung cancer.
    Results: Thirty-six ingredients and bioactive constituents detected in the serum of HCP-treated mice were identified as the key compounds involved in the inhibition of tumor growth. Animal experiments revealed that HCP significantly decreased tumor volumes and had no adverse effects on the liver or kidney or side effects. GREM1 upregulation was closely related to tumor metastasis and was regulated by miR-205-5p, as confirmed using a dual-luciferase reporter assay. OE-GREM1 promoted A549 cell migration and invasion, promoted EMT, and increased the expression of Rap1 pathway intermediaries, whereas shGREM1 had the opposite effects. Furthermore, the effects of OE-GREM1 on proliferation in the A549 xenograft mouse model were attenuated, although HCP has an inhibitory effect on tumors.
    Conclusion: Our results suggest that HCP contributes to the inhibition of NSCLC metastasis via the Gremlin/Rap1 signaling pathway regulated by miR-205-5p.
    MeSH term(s) Animals ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/genetics ; Cell Line, Tumor ; Cell Movement ; Cell Proliferation ; Chromatography, Liquid ; Epithelial-Mesenchymal Transition ; Gene Expression Regulation, Neoplastic ; Intercellular Signaling Peptides and Proteins ; Lung Neoplasms/drug therapy ; Lung Neoplasms/genetics ; Mice ; MicroRNAs/genetics ; Signal Transduction ; Tandem Mass Spectrometry
    Chemical Substances Grem1 protein, mouse ; Intercellular Signaling Peptides and Proteins ; MicroRNAs
    Language English
    Publishing date 2021-10-24
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1205240-1
    ISSN 1618-095X ; 0944-7113
    ISSN (online) 1618-095X
    ISSN 0944-7113
    DOI 10.1016/j.phymed.2021.153821
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Chan–Lam Reaction and Lewis Acid Promoted 1,3-Rearrangement of N–O Bonds to Prepare N-(2-Hydroxyaryl)pyridin-2-ones

    Bi, Hong-Yan / Wu, Qing-Yan / Zhou, Xiao-Mei / Xu, Hui-Juan / Liang, Cui / Mo, Dong-Liang / Ma, Xiao-Pan

    Organic letters. 2022 June 17, v. 24, no. 25

    2022  

    Abstract: ... through a copper(II)-catalyzed Chan–Lam reaction and subsequent BF₃-promoted selective 1,3-rearrangement of N–O ...

    Abstract We describe the difunctionalization of arylboronic acids to prepare various N-(2-hydroxyaryl)pyridin-2-ones in good yields using N-hydroxypyridin-2-ones as the oxygen and nitrogen sources through a copper(II)-catalyzed Chan–Lam reaction and subsequent BF₃-promoted selective 1,3-rearrangement of N–O bond in a one-pot procedure. Mechanistic studies reveal that the 1,3-rearrangement selectivity is controlled by the formation of the key aryloxypyridinium salt. The obtained products are easily converted to various useful pyridin-2-one scaffolds.
    Keywords Lewis acids ; copper ; nitrogen ; oxygen
    Language English
    Dates of publication 2022-0617
    Size p. 4675-4679.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1523-7052
    DOI 10.1021/acs.orglett.2c01827
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: He-Chan Pian inhibits the metastasis of non-small cell lung cancer via the miR-205-5p-mediated regulation of the GREM1/Rap1 signaling pathway

    Kan, Jun / Fu, Biqian / Zhou, Ruisheng / Zhou, Daihan / Huang, Yufang / Zhao, Hongwei / Zhang, Yunlong / Rong, Yuming / Dong, Jun / Xia, Liangping / Liu, Shanshan / Huang, Qiuling / Wang, Nannan / Ning, Na / Zhang, Bei / Zhang, Enxin

    Phytomedicine. 2022 Jan., v. 94

    2022  

    Abstract: He-Chan Pian (HCP), a traditional Chinese medicinal formula, shows promising ...

    Abstract He-Chan Pian (HCP), a traditional Chinese medicinal formula, shows promising efficacy for the treatment of lung cancer. Gremlin (GREM1) plays an important role in gastrointestinal tumor metastasis; however, little is known about its role in lung cancer. We determined the mechanism underlying the protective effect of HCP against metastasis in a mouse model of non-small cell lung cancer (NSCLC) and demonstrated the role of GREM1. Ultra-high performance liquid chromatography-mass spectrometry (UPLC-MS) was used to analyze the herbal components and metabolites from the serum of HCP-treated mice. The tumor, liver, and kidney were examined histologically, and the antitumor effects and toxicity of HCP were evaluated. Levels of epithelial-mesenchymal transition (EMT)-associated transcription factors were measured using western blotting in tumors from five groups (i.e., model, HCP [L], HCP [M], HCP [H], and positive control [cisplatin, DDP]). Differentially expressed proteins and genes were identified using protein chip and sequencing analyzes, respectively. Short hairpin RNAs and overexpression plasmids were introduced into cells to evaluate the effects of GREM1. To evaluate proliferation, migration, and invasion, the expression levels of proteins involved in the Rap1 pathway and EMT were measured in vitro. Xenograft tumors with overexpression-GREM1 (OE-GREM1) in A549 cells were examined for cell proliferation. A dual-luciferase assay was performed to verify the direct interaction of GREM1 with miR-205-5p in lung cancer. Thirty-six ingredients and bioactive constituents detected in the serum of HCP-treated mice were identified as the key compounds involved in the inhibition of tumor growth. Animal experiments revealed that HCP significantly decreased tumor volumes and had no adverse effects on the liver or kidney or side effects. GREM1 upregulation was closely related to tumor metastasis and was regulated by miR-205-5p, as confirmed using a dual-luciferase reporter assay. OE-GREM1 promoted A549 cell migration and invasion, promoted EMT, and increased the expression of Rap1 pathway intermediaries, whereas shGREM1 had the opposite effects. Furthermore, the effects of OE-GREM1 on proliferation in the A549 xenograft mouse model were attenuated, although HCP has an inhibitory effect on tumors. Our results suggest that HCP contributes to the inhibition of NSCLC metastasis via the Gremlin/Rap1 signaling pathway regulated by miR-205-5p.
    Keywords bioluminescence assay ; blood serum ; cell movement ; cell proliferation ; cisplatin ; gastrointestinal neoplasms ; gene expression regulation ; kidneys ; liver ; lung neoplasms ; lungs ; mass spectrometry ; metabolites ; metastasis ; mice ; plasmids ; protective effect ; toxicity ; xenotransplantation
    Language English
    Dates of publication 2022-01
    Publishing place Elsevier GmbH
    Document type Article
    ZDB-ID 1205240-1
    ISSN 1618-095X ; 0944-7113
    ISSN (online) 1618-095X
    ISSN 0944-7113
    DOI 10.1016/j.phymed.2021.153821
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: SAR River Image Segmentation Based on Reciprocal Gray Entropy and Improved Chan-Vese Model

    WU Shihua / WU Yiquan / ZHOU Jianjiang / MENG Tianliang

    Acta Geodaetica et Cartographica Sinica, Vol 44, Iss 11, Pp 1255-

    2015  Volume 1262

    Abstract: ... images, a segmentation method is proposed, which is based on improved Chan-Vese(CV) model combining ...

    Abstract To further improve the accuracy and speed of river segmentation on synthetic aperture radar(SAR) images, a segmentation method is proposed, which is based on improved Chan-Vese(CV) model combining with reciprocal gray entropy multi-threshold selection optimized by artificial bee colony algorithm. Considering the uniformity of the gray level within river object cluster and background cluster, a coarse river image segmentation is made by using the multi-threshold selection algorithm based on reciprocal gray entropy and artificial bee colony optimization; Contrapose the low convergence speed and the sensitivity to initial conditions of basic CV model, the Dirac function is replaced with the image edge intensity and the coarse segmentation results serve as the initial condition of improved CV model which is utilized to make a fine segmentation for the river image. A large number of experimental results show that, the proposed segmentation method needs not set initial conditions and has high running speed as well as segmentation accuracy.
    Keywords river detection ; synthetic aperture radar image segmentation ; multi-threshold selection ; reciprocal gray entropy ; artificial bee colony optimization ; Chan-Vese(CV)model ; Mathematical geography. Cartography ; GA1-1776
    Language Chinese
    Publishing date 2015-11-01T00:00:00Z
    Publisher Surveying and Mapping Press
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Chan-Yu-Bao-Yuan-Tang induces apoptosis in NSCLC and SCLC cell lines via a mitochondria-mediated pathway.

    Zhang, Yongkui / Zeng, Fang / Liu, XiaoGuang / Li, YunCheng / Zhou, JiHang / Huang, YanYan / Wang, Yekai / Zhou, ShiQuan / Zhu, WangYu / Shu, ErYun / Zhou, Guoer / Chen, Gang

    Xenobiotica; the fate of foreign compounds in biological systems

    2011  Volume 41, Issue 7, Page(s) 593–602

    Abstract: ... extract Chan-Yu-Bao-Yuan-Tang (CYBYT) in lung cancer patients. The effects of CYBYT on proliferation and ...

    Abstract Previous clinical studies have shown efficacy and safety of the traditional Chinese medicinal herb extract Chan-Yu-Bao-Yuan-Tang (CYBYT) in lung cancer patients. The effects of CYBYT on proliferation and apoptosis in the non-small cell lung cancer cell line NCI-H460 and the small cell lung cancer cell line NCI-H446 were investigated in vitro. CYBYT significantly induced antiproliferative effects of NCI-H460 and NCI-H446 cells in a concentration- and time-dependent manner. The IC(50) values in NCI-H460 cells were 94.37 µg/mL (24 h) and 20.89 µg/mL (48 h), whereas in NCI-H446 cells IC(50) values were 214.72 µg/mL (24 h) and 114.58 µg/mL (48 h). Annexin V-FITC/PI staining showed CYBYT could significantly induce apoptosis in NCI-H460 and NCI-H446 cells, and the total apoptosis rates were positively correlated with the concentration and time of CYBYT treatment. Furthermore, treatment with the broad-spectrum caspase inhibitor (z-VAD-fmk) effectively protected NCI-H460 and NCI-H446 cells against CYBYT-triggered apoptosis. The apoptotic processes involved were a marked decrease in antiapoptotic protein Bcl-2 and an increase in proapoptotic protein Bax. The release of mitochondrial cytochrome c into the cytosol was also observed, which, in turn, resulted in the activation of caspase-9 and caspase-3. CYBYT exerts antiproliferative and growth inhibition effects on NCI-H460 and NCI-H446 cells through the mitochondrial caspase-dependent cell death pathway.
    MeSH term(s) Annexin A5/metabolism ; Apoptosis/drug effects ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/pathology ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Cell Shape/drug effects ; Drug Screening Assays, Antitumor ; Drugs, Chinese Herbal/pharmacology ; Drugs, Chinese Herbal/therapeutic use ; Flow Cytometry ; Fluorescein-5-isothiocyanate/metabolism ; Humans ; Lung Neoplasms/drug therapy ; Lung Neoplasms/pathology ; Mitochondria/drug effects ; Mitochondria/metabolism ; Propidium/metabolism ; Signal Transduction/drug effects ; Small Cell Lung Carcinoma/drug therapy ; Small Cell Lung Carcinoma/pathology
    Chemical Substances Annexin A5 ; Drugs, Chinese Herbal ; chan-yu-bao-yuan-tang ; Propidium (36015-30-2) ; Fluorescein-5-isothiocyanate (I223NX31W9)
    Language English
    Publishing date 2011-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120287-x
    ISSN 1366-5928 ; 0049-8254
    ISSN (online) 1366-5928
    ISSN 0049-8254
    DOI 10.3109/00498254.2011.565818
    Database MEDical Literature Analysis and Retrieval System OnLINE

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