Journal: EMBO Molecular Medicine

Article Title: A clinical and mechanistic study of topical borneol‐induced analgesia

doi: 10.15252/emmm.201607300

Figure Lengend Snippet: A–D Representative whole‐cell currents in HEK 293 cells expressing TRPV1 (A), ASIC3 (B), P2X2 (C), or P2X4 (D) in response to capsaicin (A), acidic pH (B), or ATP (C, D) in the absence of presence of borneol ( n = 5 for each channel). E The effect of different concentrations of borneol on the enzymatic activity of human COX‐2. The number of independent measurements is marked on top of each bar. F Averaged intracellular Ca 2+ increases in cultured mouse DRG neurons in response to consecutive applications of 200 μM borneol, 200 μM menthol, and 67 mM KCl. A total of 81 in 1,689 neurons from four mice were found to be borneol‐sensitive and were included in the analysis. G Representative intracellular Ca 2+ signals in HEK 293 cells expressing human TRPM8 (hTRPM8) in response to different concentrations of borneol. After each application of borneol, Ca 2+ ionophore ionomycin was applied to calibrate Ca 2+ response. RFU: relative fluorescence unit. H Dose–response curves of the borneol‐ or menthol‐induced increase in intracellular Ca 2+ in hTRPM8‐expressing HEK 293 cells. Smooth curves are fit to the Hill equation with an EC 50 of 65 μM and a Hill coefficient of 2.0 for borneol ( n = 15) and an EC 50 of 13 μM and a Hill coefficient of 2.0 for menthol ( n = 6 at concentrations of 0.1, 0.3, and 1 μM; n = 9 at concentration of 3 μM; n = 13 at concentrations of 10, 30, 100, and 300 μM). The data were normalized to ionomycin‐induced intracellular Ca 2+ increases. I Time course of menthol‐ and subsequently applied borneol‐induced whole‐cell currents in hTRPM8‐expressing HEK 293 cells ( n = 6). Data information: All the data are presented as the mean ± standard error of the mean (SEM).

Article Snippet: Intracellular calcium imaging of HEK 293 cells was performed using the FlexStation 3 microplate reader (Molecular Devices).

Techniques: Expressing, Activity Assay, Cell Culture, Fluorescence, Concentration Assay

Journal: EMBO Molecular Medicine

Article Title: A clinical and mechanistic study of topical borneol‐induced analgesia

doi: 10.15252/emmm.201607300

Figure Lengend Snippet: Representative intracellular Ca 2+ signals in HEK 293 cells transfected with empty vector in response to borneol and subsequent applied Ca 2+ ionophore ionomycin ( n = 6). Representative intracellular Ca 2+ signals in HEK 293 cells expressing hTRPM8 in response to different concentrations of menthol and the subsequently applied Ca 2+ ionophore ionomycin.

Article Snippet: Intracellular calcium imaging of HEK 293 cells was performed using the FlexStation 3 microplate reader (Molecular Devices).

Techniques: Transfection, Plasmid Preparation, Expressing

Journal: EMBO Molecular Medicine

Article Title: A clinical and mechanistic study of topical borneol‐induced analgesia

doi: 10.15252/emmm.201607300

Figure Lengend Snippet: Quantification of consecutively applied 100 μM menthol‐ and 600 μM borneol‐induced hTRPM8 currents. Currents were normalized to 100 μM menthol‐induced currents at +80 mV ( n = 6). Representative intracellular Ca 2+ signals in HEK 293 cells expressing mouse TRPM8 in response to different concentrations of borneol. Dose–response curves of borneol‐induced increase in intracellular Ca 2+ in mouse TRPM8‐expressing HEK 293 cells. The smooth curve is a fit to the Hill equation with an EC 50 of 116 μM ( n = 12). The data were normalized to ionomycin‐induced intracellular Ca 2+ increases. Time course of menthol‐ and subsequently applied borneol‐induced whole‐cell currents in mouse TRPM8‐expressing HEK 293 cells ( n = 5). Data information: All the data are presented as the mean ± standard error of the mean (SEM).

Article Snippet: Intracellular calcium imaging of HEK 293 cells was performed using the FlexStation 3 microplate reader (Molecular Devices).

Techniques: Expressing

Journal: Scientific reports

Article Title: Altered functional properties of the codling moth Orco mutagenized in the intracellular loop-3.

doi: 10.1038/s41598-021-83024-3

Figure Lengend Snippet: Figure 3. Comparison of HEK cell responses expressing wild-type and mutagenized form of Orco. (a)— Universal Orco agonist, VUAA1, elicits dose-dependent Ca++ i increase in HEK293A cells expressing either CpomOrco (blue) or CpomOrcoQ417H (red). (b)—VUAA1 concentration dependencies. Data points represent the mean response amplitudes (± SE). Data were fit to a Hill equation for CpomOrco (blue smooth line) or CpomOrcoQ417H (red smooth line) respectively, providing maximum responses of ~ 6.3 ± 0.1 and ~ 3.9 ± 1.3 ∆F, EC50s of ~ 157.1 ± 3.58 and ~ 261.8 ± 165.6 µM and Hill coefficients of ~ 2.4 ± 0.1 and ~ 2.1 ± 1.9; total number of cells analysed: N = 123 and 94. (c)—Effects of Pear ester on the activity of CpomOrco+OR3 (blue) and CpomOrcoQ417H+OR3 (red) heteromers. (d)—Pear ester concentration dependencies. Data points represent the mean response amplitudes (± SE) of cells from at least three experiments. Data were fit to a Hill equation providing the following parameters: maximum responses of ~ 6.6 ± 0.3 and 3.7 ± 0.1 ∆F; EC50s of ~ 210 ± 14.2 and ~ 733.5 ± 26.9 µM; Hill coefficients of ~ 4.6 ± 2.4 and ~ 4.6 ± 0.4, for CpomOR3/CpomOrco (blue smooth line) or CpomOR3/CpomOrcoQ417H (red smooth line) respectively. Total number of cells analysed: N = 160 and 262. Traces in A and C represent the mean responses of cells from one experiment. Data in B and D were not normalized. Scales in B and D are different.

Article Snippet: HEK293 cells lines (HEK293A/HEK293T) were grown in HEK cell media [Dulbecco’s modified Eagle’s medium containing 10% fetal bovine serum (MP Biomedicals, Solon, OH, USA), 2.0 mM L-glutamine, and 100 μg/mL penicillin/streptomycin (Invitrogen)] at 37 °C and 5% CO2.

Techniques: Comparison, Expressing, Concentration Assay, Activity Assay

Journal: Scientific reports

Article Title: Altered functional properties of the codling moth Orco mutagenized in the intracellular loop-3.

doi: 10.1038/s41598-021-83024-3

Figure Lengend Snippet: Figure 4. Testing pH sensitivity of HEK cell expressing wild-type and mutagenized form of Orco. (a)— Decrease in fluorescence intensity of the pH sensitive probe, BCECF, possibly reflects acidification of cytoplasm in response to low pH extracellular conditions. (b)—Comparison of VUAA1 concentration dependencies obtained after 30 min incubation at low pHe for CpomOrco or CpomOrcoQ417H. Left panels—VUAA1 activated calcium responses. Right panels—VUAA1 concentration dependencies. Data points represent the mean response amplitudes (± SE). Data were fit to a Hill equation with the following parameters: maximum responses of ~ 1.3 ± 0.7 and ~ 1.8 ± 0.2 ∆F; EC50s of ~ 260 ± 187 and ~ 263.3 ± 45.3 µM; Hill coefficients of ~ 2.5 ± 4.3 and ~ 2.2 ± 0.5, for CpomOrco (blue smooth line, n = 84) or CpomOrcoQ417H (red smooth line, n = 63) respectively. Constraints were applied to fit greatly scattered data in B. Traces in B (left panels) represent the mean responses of cells from one experiment. Data in B (right panels) were not normalized. Concentration dependencies obtained in physiologically relevant control conditions were taken from Fig. 3.

Article Snippet: HEK293 cells lines (HEK293A/HEK293T) were grown in HEK cell media [Dulbecco’s modified Eagle’s medium containing 10% fetal bovine serum (MP Biomedicals, Solon, OH, USA), 2.0 mM L-glutamine, and 100 μg/mL penicillin/streptomycin (Invitrogen)] at 37 °C and 5% CO2.

Techniques: Expressing, Fluorescence, Comparison, Concentration Assay, Incubation, Control

Journal: PloS one

Article Title: Specific marking of hESCs-derived hematopoietic lineage by WAS-promoter driven lentiviral vectors.

doi: 10.1371/journal.pone.0039091

Figure Lengend Snippet: Figure 1. WAS gene expression is restricted to hematopoietic cells and hemogenic progenitors. (A) Analysis of WAS gene expression in different cell lines. mRNA was obtained from hematopoietic cell lines (AlloT and Raji), hESCs-derived myeloid CFUs (And-1 CFUs), undifferentiated hESCs (AND-1 and SHEF-2), a human fibroblastic cell line (293T) and human endothelial cells (HUVEC) and analyzed by RT-PCR for WAS expression (see M&M for details). (B) Time-course analysis of WAS gene expression during hematopoietic differentiation of AND-1 and H9 hESCs (see M&M and Figure S1 for details). mRNA was extracted at different days during differentiation as indicated and WAS expression analyzed by RT-PCR. (C) Analysis of WAS gene expression in hemogenic progenitors and hematopoietic cells. CD452CD31+ (containing hemogenic progenitors) and CD45+CD31+

Article Snippet: Cell Lines and Culture Media 293T cells (CRL11268; American Type Culture Collection; Rockville, MD) were grown in Dulbecco’s Modified Eagle Medium (DMEM, Invitrogen, Edinburgh, Scotland) with GlutaMAXTM and supplemented with 10% Fetal Bovine Serum (FBS) (PAA Laboratories GmbH, Austria).

Techniques: Gene Expression, Derivative Assay, Reverse Transcription Polymerase Chain Reaction, Expressing

Journal: eLife

Article Title: Negative regulation of urokinase receptor activity by a GPI-specific phospholipase C in breast cancer cells

doi: 10.7554/eLife.23649

Figure Lengend Snippet: ( A ) Domain structure of GDE2, GDE3 and GDE6 (left panel), and the transmembrane scheme of GDE3 (right panel). GDPD denotes catalytic glycerophosphodiesterase domain. Asterisk in GDPD domain depicts catalytic His residue in both GDE2 and GDE3. ( B ) Immunoblot analysis of uPAR release into the medium. HEK-uPAR cells transfected with empty vector (control), GDE2 or GDE3. PI-PLC served as positive control. ( C ) Mutant GDE3(H229A) fails to release uPAR. ( D ) Partial loss of uPAR from the plasma membrane by GDE3, as measured by flow cytometry. ( E ) TIRF microscopy reveals loss of uPAR from the basolateral plasma membrane. Box plot shows uPAR-GFP intensity at the ventral membrane (n = 3, mean ±SEM ****p<0001). ( F ) Homology modeling of the GDE2 and GDE3 catalytic domains showing surface charge distributions (blue, positive; red, negative; green line, putative GPI-binding groove; yellow line, proposed substrate-binding surface). The active site is indicated by glycerol-3-phosphate located at the template structure.

Article Snippet: To determine the inositol phosphate content of cleaved uPAR, suPAR was immuno-precipitated from HEK293 cell conditioned medium using anti-GFP beads (ChromoTek).

Techniques: Residue, Western Blot, Transfection, Plasmid Preparation, Control, Positive Control, Mutagenesis, Clinical Proteomics, Membrane, Flow Cytometry, Microscopy, Binding Assay

Journal: eLife

Article Title: Negative regulation of urokinase receptor activity by a GPI-specific phospholipase C in breast cancer cells

doi: 10.7554/eLife.23649

Figure Lengend Snippet: ( A ) Confocal images of HEK293 cells expressing human GDE2-HA, GDE3-HA or GDE6-HA, as indicated; bar, 10 μm. ( B ) GDE3 localizes to distinct microdomains (yellow square, open arrows) and filopodia-like extensions (orange square, solid arrow), as visualized by confocal and super-resolution microscopy. Bars, 10 μm and 1 μm respectively. ( C ) Immunoblot analysis showing that GDE3 reduces the membrane-anchored uPAR pool and competes with PI-PLC. The medium and lysates of HEK-uPAR cells expressing GDE3 or empty vector (EV) were analyzed without or with PI-PLC treatment (45 min.) of the cells, as indicated (left and right panels, respectively). Right lanes refer to wild-type (WT) HEK293 cells. ( D ) Expression and localization of GDE3 and mutant GDE3(H229A), as measured by immunoblotting and confocal microscopy, respectively, at 24 hr after transfection. Actin was used as a loading control. ( E ) uPAR-TM containing the transmembrane domain of EGFR is not released by GDE3, as shown by immunoblotting using anti-uPAR antibody, while uPAR-TM is properly expressed at the plasma membrane (bar, 10 μm).

Article Snippet: To determine the inositol phosphate content of cleaved uPAR, suPAR was immuno-precipitated from HEK293 cell conditioned medium using anti-GFP beads (ChromoTek).

Techniques: Expressing, Super-Resolution Microscopy, Western Blot, Membrane, Plasmid Preparation, Mutagenesis, Confocal Microscopy, Transfection, Control, Clinical Proteomics

Journal: eLife

Article Title: Negative regulation of urokinase receptor activity by a GPI-specific phospholipase C in breast cancer cells

doi: 10.7554/eLife.23649

Figure Lengend Snippet: ( A ) (Left) Scheme showing uPAR cleavage in cis or trans. (Right) GDE3-expressing HEK-uPAR cells were mixed with a GDE3-deficient cell population, as indicated. Immunoblot analysis of uPAR in medium and cell lysates indicates that GDE3 acts in cis; mock refers to empty vector-transfected cells. ( B ) GDE3 expression leads to increased GPI-free suPAR. Conditioned medium from HEK-uPAR cells expressing GDE2 or GDE3 was subjected to Triton X-114 phase separation. suPAR in the aqueous ( A ) and detergent ( D ) fractions was analyzed by immunoblotting. ( C ) GPI-anchor with phospholipase cleavage sites indicated; HONO, nitrous acid. ( D ) Representative LC-MS ion chromatograms (m/z 259.02–259.03); inositol 1-phosphate peaks in red. HONO-treated suPAR contains inositol 1-phosphate (n = 3, mean ±SEM; *p<0.05).

Article Snippet: To determine the inositol phosphate content of cleaved uPAR, suPAR was immuno-precipitated from HEK293 cell conditioned medium using anti-GFP beads (ChromoTek).

Techniques: Expressing, Western Blot, Plasmid Preparation, Transfection, Liquid Chromatography with Mass Spectroscopy

Journal: eLife

Article Title: Negative regulation of urokinase receptor activity by a GPI-specific phospholipase C in breast cancer cells

doi: 10.7554/eLife.23649

Figure Lengend Snippet: ( A ) Endogenous uPAR expression in MDA-MB-231 versus HEK293 cells, as determined by immunoblot. ( B ) Endogenous GDPD2 expression, as determined by qPCR analysis. ( C ) (left) Cell-surface expression of GDE3-mCherry of MDA-MB-231 cells expressing GDE3, as detected by flow cytometry. (Right) Cell-surface expression of uPAR in control (grey) and GDE3-expressing MDA-MB-231 cells (red), as detected by flow cytometry. ( D ) Confocal (top) and dual-color super-resolution microscopy images (bottom) of MDA-MB-231 cells expressing GDE3-GFP or catalytically dead GDE3(H229A)-GFP. Endogenous uPAR was immunostained in red. Merged images show colocalization of uPAR with GDE3(H229A) but not with wild-type GDE3 and uPAR. Scale bars, 10 μm (confocal) and 1 μm (super-resolution). Co-localization analysis (Mander's coefficient) on peripheral uPAR patches in confocal images was done using ImageJ software (n = 30 cells, three independent experiments). ( E ) Endogenous uPAR staining in control, GDE3-overexpressing and GDE3 knockout MDA-MB-231 cells plated on vitronectin. Two distinct GDE3 knockout clones (KO1 and KO2) were examined, as indicated. Scale bar,10 μm. ( F ) Quantification of basolateral uPAR-containing membrane domains referring to the cells in panel ( E ) (n = 3, mean ±SEM, ****p<0.0001). GDE3 suppresses the vitronectin- and uPAR-dependent phenotype of MDA-MB-231 breast cancer cells.

Article Snippet: To determine the inositol phosphate content of cleaved uPAR, suPAR was immuno-precipitated from HEK293 cell conditioned medium using anti-GFP beads (ChromoTek).

Techniques: Expressing, Western Blot, Flow Cytometry, Control, Super-Resolution Microscopy, Software, Staining, Knock-Out, Clone Assay, Membrane

Journal: Light, Science & Applications

Article Title: Full-field interferometric imaging of propagating action potentials

doi: 10.1038/s41377-018-0107-9

Figure Lengend Snippet: a Ultrafast QPM synchronized with the MEA recording system. Light from a supercontinuum laser is collimated (C1) and filtered by a dichroic mirror and a bandpass filter (F1). An optical phase image of the sample is obtained from the off-axis interferogram captured by the high-speed camera. b A transparent MEA plated with spiking HEK cells allows simultaneous near-infrared (NIR) optical recording and extracellular electrical recording. c Electrical and optical measurements are synchronized by recording the camera “ready” signal on one of the MEA channels. Trigger signals from the MEA and an external clock control the timing of the captured frames (see Materials and methods)

Article Snippet: After setting up the whole cell configuration, the membrane potential during the spontaneous action potentials of spiking HEK cells was monitored with a Multiclamp 700B amplifier (Molecular Devices) under the current clamp mode.

Techniques:

Journal: Cell

Article Title: Microenvironment drives cell state, plasticity, and drug response in pancreatic cancer

doi: 10.1016/j.cell.2021.11.017

Figure Lengend Snippet: KEY RESOURCES TABLE

Article Snippet: Cultrex 293T cells for R-spondin1 conditioned medium , Trevigen , Cat# 3710-001-K; RRID:CVCL_RU08.

Techniques: Polymer, Recombinant, Amplification, Membrane, Picogreen Assay, Software, Imaging