doxycycline dox  (Valiant)


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    Name:
    Doxycycline hydrochloride
    Description:
    Doxycycline Hydrochloride
    Catalog Number:
    02195044-cf
    Price:
    10.0
    Applications:
    Antibiotic
    Category:
    Life Sciences Biochemicals Antibiotics
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    Valiant doxycycline dox
    Doxycycline hydrochloride
    Doxycycline Hydrochloride
    https://www.bioz.com/result/doxycycline dox/product/Valiant
    Average 93 stars, based on 33 article reviews
    Price from $9.99 to $1999.99
    doxycycline dox - by Bioz Stars, 2021-02
    93/100 stars

    Images

    1) Product Images from "Galectin-1 and Galectin-3 Mediate Protocadherin-24-Dependent Membrane Localization of β-catenin in Colon Cancer Cell Line HCT116"

    Article Title: Galectin-1 and Galectin-3 Mediate Protocadherin-24-Dependent Membrane Localization of β-catenin in Colon Cancer Cell Line HCT116

    Journal: Current Chemical Genomics

    doi: 10.2174/1875397301206010018

    ( a ) Schematic representation of the PCDH24-HaloTag expression clone. The expression of PCDH24-HaloTag is regulated by the CMV-TetO2 promoter, which is induced by DOX through the tetracycline repressor-operator system. A red asterisks indicates a transmembrane region of the PCDH24. ( b ) Inducible expression of PCDH24-HaloTag in the HCT116 PCDH24-HaloTag stable cell line. Lysates from HCT116 PCDH24-HaloTag cells with or without DOX (1 μg/mL; hereafter DOX induction is under identical conditions) were separated on SDS-PAGE and the expression patterns of PCDH24 were analyzed by Western blot using an anti-PCDH24 polyclonal antibody. As a control, α-tubulin was detected with an anti-α-tubulin antibody. PCDH24-HaloTag in the cell lysate was labeled with TMR HaloTag® ligand and detected by a FluoroImager FLA-3000 (Fujifilm). ( c ) Typical images of the subcellular localization of PCDH24-HaloTag. HCT116 PCDH24-HaloTag cells were cultured with or without DOX. The cells were observed by phase contrast and fluorescent staining with the HaloTag® R110Direct™ ligand using an Axiovert S100 microscopy system. The scale bar indicates 100 µm. ( d ) Saturation density of HCT116 and HCT116-PCDH24 stable cell lines. 1.0 × 106 HCT116 cells, HCT116-PCDH24-EGFP cells, or HCT116-PCDH24-HaloTag cells with or without DOX were cultured in 35 mm dishes. Triplicate dishes were counted at the indicated time point of the growth curves, and each number represents the average value. ( e ) Effect of PCDH24 on cell motility. Photographs were taken 0, 8, 16 and 24 h following wound injury using a Biozero microscopy time-lapse system.
    Figure Legend Snippet: ( a ) Schematic representation of the PCDH24-HaloTag expression clone. The expression of PCDH24-HaloTag is regulated by the CMV-TetO2 promoter, which is induced by DOX through the tetracycline repressor-operator system. A red asterisks indicates a transmembrane region of the PCDH24. ( b ) Inducible expression of PCDH24-HaloTag in the HCT116 PCDH24-HaloTag stable cell line. Lysates from HCT116 PCDH24-HaloTag cells with or without DOX (1 μg/mL; hereafter DOX induction is under identical conditions) were separated on SDS-PAGE and the expression patterns of PCDH24 were analyzed by Western blot using an anti-PCDH24 polyclonal antibody. As a control, α-tubulin was detected with an anti-α-tubulin antibody. PCDH24-HaloTag in the cell lysate was labeled with TMR HaloTag® ligand and detected by a FluoroImager FLA-3000 (Fujifilm). ( c ) Typical images of the subcellular localization of PCDH24-HaloTag. HCT116 PCDH24-HaloTag cells were cultured with or without DOX. The cells were observed by phase contrast and fluorescent staining with the HaloTag® R110Direct™ ligand using an Axiovert S100 microscopy system. The scale bar indicates 100 µm. ( d ) Saturation density of HCT116 and HCT116-PCDH24 stable cell lines. 1.0 × 106 HCT116 cells, HCT116-PCDH24-EGFP cells, or HCT116-PCDH24-HaloTag cells with or without DOX were cultured in 35 mm dishes. Triplicate dishes were counted at the indicated time point of the growth curves, and each number represents the average value. ( e ) Effect of PCDH24 on cell motility. Photographs were taken 0, 8, 16 and 24 h following wound injury using a Biozero microscopy time-lapse system.

    Techniques Used: Expressing, Stable Transfection, SDS Page, Western Blot, Labeling, Cell Culture, Staining, Microscopy

    ( a ) SDS-PAGE of pull-down samples by HaloLink™ Resin from HCT116-PCDH24-HaloTag cells cultured with or without DOX and HCT116 cells ectopically expressing HaloTag. The samples were concentrated, then resolved by 5–20% SDS-PAGE and subjected to imida-zole-zinc reverse staining. The excised bands subjected to LC-MS/MS analysis are highlighted by black arrowheads. The numerals of the proteins analyzed in this study are indicated with asterisks (i.e., #11 and #12: PCDH24; #25: galectin-3; #27: galectin-1). The proteins identi-fied by the pull-down assay and MS analysis are shown in Supplemental Table 1. ( b ) Western blot analysis of the pull-down samples. West-ern blot experiments were performed for whole cell lysate (WCL) and pull-down assay samples using anti-galectin-1, anti-galectin-3 and anti- β -catenin antibodies. (c) Delineation of the galectin-interaction domain in the intracellular region of PCDH24. Schematic representa-tion of the luciferase-based pull-down assay is shown. Expression clones for luciferase-fused full-length PCDH24 (PCDH24-luc2, amino acids 1–1310 residues) and the C-terminal deletion mutants (PCDH24d1280-luc2, amino acids 1–1280; PCDH24d1186-luc2, amino acids 1–1186) were co-transfected with HaloTag, HaloTag-fused galectin-1 or HaloTag-fused galectine-3 expression clones into HCT116 cells. The amounts of luciferase-fusion proteins in whole cell lysates (WCL) and the pull-down samples were measured as the luciferase activity with the Dual-Glo™ substrate using a GloMAX™ luminometer (upper panel). Results of the experiments are indicated as an arbitrary unit of the luciferase activities. Transfection of the HaloTag-containing clone without the PCDH24 clones (none) was performed as a negative control (lower panel).
    Figure Legend Snippet: ( a ) SDS-PAGE of pull-down samples by HaloLink™ Resin from HCT116-PCDH24-HaloTag cells cultured with or without DOX and HCT116 cells ectopically expressing HaloTag. The samples were concentrated, then resolved by 5–20% SDS-PAGE and subjected to imida-zole-zinc reverse staining. The excised bands subjected to LC-MS/MS analysis are highlighted by black arrowheads. The numerals of the proteins analyzed in this study are indicated with asterisks (i.e., #11 and #12: PCDH24; #25: galectin-3; #27: galectin-1). The proteins identi-fied by the pull-down assay and MS analysis are shown in Supplemental Table 1. ( b ) Western blot analysis of the pull-down samples. West-ern blot experiments were performed for whole cell lysate (WCL) and pull-down assay samples using anti-galectin-1, anti-galectin-3 and anti- β -catenin antibodies. (c) Delineation of the galectin-interaction domain in the intracellular region of PCDH24. Schematic representa-tion of the luciferase-based pull-down assay is shown. Expression clones for luciferase-fused full-length PCDH24 (PCDH24-luc2, amino acids 1–1310 residues) and the C-terminal deletion mutants (PCDH24d1280-luc2, amino acids 1–1280; PCDH24d1186-luc2, amino acids 1–1186) were co-transfected with HaloTag, HaloTag-fused galectin-1 or HaloTag-fused galectine-3 expression clones into HCT116 cells. The amounts of luciferase-fusion proteins in whole cell lysates (WCL) and the pull-down samples were measured as the luciferase activity with the Dual-Glo™ substrate using a GloMAX™ luminometer (upper panel). Results of the experiments are indicated as an arbitrary unit of the luciferase activities. Transfection of the HaloTag-containing clone without the PCDH24 clones (none) was performed as a negative control (lower panel).

    Techniques Used: SDS Page, Cell Culture, Expressing, Staining, Liquid Chromatography with Mass Spectroscopy, Mass Spectrometry, Pull Down Assay, Western Blot, Luciferase, Clone Assay, Transfection, Activity Assay, Negative Control

    ( a ) Subcellular localization of endogenous galectin-1 and -3 in HCT116 PCDH24-HaloTag cells. HCT116 PCDH24-HaloTag cells were cultured with or without DOX for 36 h before formalin fixation. For immunofluorescent analysis, galectins were labeled using specific anti-bodies against galectin-1 or -3 (red). PCDH24-HaloTag was labeled with the HaloTag® TMR ligand (green). The scale bar represents 20 µm. ( b ) Translocation of β -catenin to the nucleus in PCDH24-HaloTag-expressing HCT116 cells (DOX+) caused by the over-expression of the galectins. Immunofluorescent analysis of β -catenin in the cells in the presence or absence of ectopically-expressed HaloTag-fused galectins was performed using an antibody against β -catenin (blue). PCDH24-HaloTag was fluorescently-labeled using HaloTag® R110Direct™ ligand prior to the transfection of HaloTag-fused galectins expression clones. HaloTag-fused galectins were fluorescently-double stained using HaloTag® R110Direct™ ligand and coumarin ligand. The HaloTag-fused galectin expression clones used here were obtained from the Kazusa Collection of Flexi HaloTag Clones [26]. The cells were fixed at 24 h after the transfection of HaloTag-galectin-1 or HaloTag-galectin-3 expression clones. The scale bar represents 200 µm. ( c ) Effects of siRNA against the galectins on the subcellular localization of β -catenin. The subcellular localization of the galectins and β -catenin in HCT116 cells was observed in the presence or absence of the ga-lectin siRNAs. Endogenous galectins and β -catenin were labeled with specific antibodies. The scale bar represents 20 µm. (d) Reduction of endogenous galectins and increase in membrane-localized β -catenin by siRNA against galectins. Western blot experiments were performed for whole cell lysate using anti- β -catenin, anti-galectin-1 and -3 and for the membrane fraction using an anti- β -catenin antibody.
    Figure Legend Snippet: ( a ) Subcellular localization of endogenous galectin-1 and -3 in HCT116 PCDH24-HaloTag cells. HCT116 PCDH24-HaloTag cells were cultured with or without DOX for 36 h before formalin fixation. For immunofluorescent analysis, galectins were labeled using specific anti-bodies against galectin-1 or -3 (red). PCDH24-HaloTag was labeled with the HaloTag® TMR ligand (green). The scale bar represents 20 µm. ( b ) Translocation of β -catenin to the nucleus in PCDH24-HaloTag-expressing HCT116 cells (DOX+) caused by the over-expression of the galectins. Immunofluorescent analysis of β -catenin in the cells in the presence or absence of ectopically-expressed HaloTag-fused galectins was performed using an antibody against β -catenin (blue). PCDH24-HaloTag was fluorescently-labeled using HaloTag® R110Direct™ ligand prior to the transfection of HaloTag-fused galectins expression clones. HaloTag-fused galectins were fluorescently-double stained using HaloTag® R110Direct™ ligand and coumarin ligand. The HaloTag-fused galectin expression clones used here were obtained from the Kazusa Collection of Flexi HaloTag Clones [26]. The cells were fixed at 24 h after the transfection of HaloTag-galectin-1 or HaloTag-galectin-3 expression clones. The scale bar represents 200 µm. ( c ) Effects of siRNA against the galectins on the subcellular localization of β -catenin. The subcellular localization of the galectins and β -catenin in HCT116 cells was observed in the presence or absence of the ga-lectin siRNAs. Endogenous galectins and β -catenin were labeled with specific antibodies. The scale bar represents 20 µm. (d) Reduction of endogenous galectins and increase in membrane-localized β -catenin by siRNA against galectins. Western blot experiments were performed for whole cell lysate using anti- β -catenin, anti-galectin-1 and -3 and for the membrane fraction using an anti- β -catenin antibody.

    Techniques Used: Cell Culture, Labeling, Translocation Assay, Expressing, Over Expression, Transfection, Clone Assay, Staining, Western Blot

    ( a ) PI3K activity was assessed using quenched fluorescence signals. Whole cell lysate was extracted and the fluorescence signal was measured. As a control, the PI3K inhibitor LY294002 was used. HCT116-PCDH24-HaloTag cells were exposed to LY294002 (100 µM) for 48 h before the assay. HCT116-PCDH24-HaloTag cells were cultured with or without DOX. Galectin1 and galectin3 indicate cells that were transiently transfected with the HaloTag-fused galectin-1 or galectin-3 expression clone, respectively. %Activity was calculated from the signal intensity of DOX- cells, which was divided by the signal intensity observed for each indicated condition. Triplicate wells were assayed and the data represent the mean ± SD. ( b ) AKT/PKB activity downstream of PI3K signaling modified by the PCDH24 and/or the galectins. HCT116-PCDH24-HaloTag and HCT116 cells were cultured with or without DOX, transiently-expressed HaloTag-fused galectin-1 and galectin3. Western blot analysis of AKT/PKB in the cells was performed using antibodies against total AKT or phosphorylated AKT. Halo-Tag-fusion proteins were fluorescently-labeled using TMR HaloTag® ligand and detected by a FluoroImager FLA-3000 (Fujifilm). As a control, the PI3K inhibitor LY294002 was used. HCT116 cells were exposed to LY294002 (10 µM and 20 µM) for 24 h before the assay. ( c ) Subcellular localization of β -catenin in HCT116 cells treated with LY294002. Immunofluorescent images were obtained using an anti β -catenin antibody. ( d ) Proposed model for the mechanism by which PCDH24 regulates PI3K activation via galectin-1 and galectin-3 in colon cancer cells. In parental HCT116 cells (left), galectin-1 and -3 activate PI3K. The activation of PI3K by galectins activates AKT/PKB and also leads to the nuclear localization of β -catenin. Conversely, in HCT116 cells expressing PCDH24 (right), galectin-1 and -3 are trapped by PCDH24 at the cell membrane, and thus PI3K and AKT/PKB are not activated by the galectins. Subsequently, β -catenin is localized to the cell membrane and is prevented from activating the transcription of its target genes in the nucleus.
    Figure Legend Snippet: ( a ) PI3K activity was assessed using quenched fluorescence signals. Whole cell lysate was extracted and the fluorescence signal was measured. As a control, the PI3K inhibitor LY294002 was used. HCT116-PCDH24-HaloTag cells were exposed to LY294002 (100 µM) for 48 h before the assay. HCT116-PCDH24-HaloTag cells were cultured with or without DOX. Galectin1 and galectin3 indicate cells that were transiently transfected with the HaloTag-fused galectin-1 or galectin-3 expression clone, respectively. %Activity was calculated from the signal intensity of DOX- cells, which was divided by the signal intensity observed for each indicated condition. Triplicate wells were assayed and the data represent the mean ± SD. ( b ) AKT/PKB activity downstream of PI3K signaling modified by the PCDH24 and/or the galectins. HCT116-PCDH24-HaloTag and HCT116 cells were cultured with or without DOX, transiently-expressed HaloTag-fused galectin-1 and galectin3. Western blot analysis of AKT/PKB in the cells was performed using antibodies against total AKT or phosphorylated AKT. Halo-Tag-fusion proteins were fluorescently-labeled using TMR HaloTag® ligand and detected by a FluoroImager FLA-3000 (Fujifilm). As a control, the PI3K inhibitor LY294002 was used. HCT116 cells were exposed to LY294002 (10 µM and 20 µM) for 24 h before the assay. ( c ) Subcellular localization of β -catenin in HCT116 cells treated with LY294002. Immunofluorescent images were obtained using an anti β -catenin antibody. ( d ) Proposed model for the mechanism by which PCDH24 regulates PI3K activation via galectin-1 and galectin-3 in colon cancer cells. In parental HCT116 cells (left), galectin-1 and -3 activate PI3K. The activation of PI3K by galectins activates AKT/PKB and also leads to the nuclear localization of β -catenin. Conversely, in HCT116 cells expressing PCDH24 (right), galectin-1 and -3 are trapped by PCDH24 at the cell membrane, and thus PI3K and AKT/PKB are not activated by the galectins. Subsequently, β -catenin is localized to the cell membrane and is prevented from activating the transcription of its target genes in the nucleus.

    Techniques Used: Expressing, Activity Assay, Over Expression, Inhibition, Fluorescence, Cell Culture, Transfection, Modification, Western Blot, Labeling, Activation Assay

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