Journal: Biochimica et biophysica acta. Molecular basis of disease

Article Title: Integrated multiomic analysis identifies TRIP13 as a mediator of alveolar epithelial type II cell dysfunction in idiopathic pulmonary fibrosis

doi: 10.1016/j.bbadis.2024.167572

Figure Lengend Snippet: Key resources.

Article Snippet: Mouse IgG1 anti-human CD326 (EpCAM)-conjugated microbeads , Miltenyi Biotec , Cat# 130–061–101 RRID: AB_2832928.

Techniques: Plasmid Preparation, Magnetic Beads, Recombinant, Blocking Assay, Lysis, Protease Inhibitor, Red Blood Cell Lysis, Software, Microscopy, Fluorescence, Imaging

Journal: American Journal of Physiology - Heart and Circulatory Physiology

Article Title: Enhanced large conductance K + channel activity contributes to the impaired myogenic response in the cerebral vasculature of Fawn Hooded Hypertensive rats

doi: 10.1152/ajpheart.00636.2013

Figure Lengend Snippet: Comparison of BK-α- and BK-β-subunit expression in cerebral vessel homogenates isolated from FHH and FHH.1BN rats. BK-α- and BK-β-subunits were probed on different blots. The same blots were then reprobed for β-actin. A: representative bands corresponding to the molecular weight of the BK-α-subunit (∼100 kDa), BK-β-subunit (∼25 kDa), and β-actin (∼42 kDa) in cerebral vessels obtained from FHH and FHH.1BN rats (n = 8 animals each; 3 sets of experiments). B: a comparison of the expression of α- and β-subunits. Numbers in parentheses indicate the number of samples studied.

Article Snippet: After transfer, the membrane was blocked with TBS-T buffer containing 20 mM Tris pH 7.5, 150 mM NaCl, 0.05% Tween, and a 5% blocking powder (Bio-Rad) at 4°C for 1 h. The blot was probed with primary antibody against BK α- and β-subunit [1:500 and 1:200, respectively; polyclonal rabbit Anti-K Ca 1.1, to amino acids 1184–1200 and Anti-sloβ1 (KCNMB1); Alomone Labs, Jerusalem, Israel] overnight at 4°C.

Techniques: Expressing, Isolation, Molecular Weight

Journal: PLoS ONE

Article Title: Emerging Role of the Calcium-Activated, Small Conductance, SK3 K + Channel in Distal Tubule Function: Regulation by TRPV4

doi: 10.1371/journal.pone.0095149

Figure Lengend Snippet: Antibodies and markers used for immunohistochemistry.

Article Snippet: Anti-AQP2 ATTO-550 , 1∶200 , Rabbit , Alomone.

Techniques: Immunohistochemistry, Plasmid Preparation

Journal: PLoS ONE

Article Title: Emerging Role of the Calcium-Activated, Small Conductance, SK3 K + Channel in Distal Tubule Function: Regulation by TRPV4

doi: 10.1371/journal.pone.0095149

Figure Lengend Snippet: Top Panel (A–C): A low-magnification transverse section (5 µm) of the mouse kidney is shown. Discrete labeling is shown for staining for aquaporin-2 ( A. AQP2, red), a marker of the collecting ducts, SK3 ( B. SK3, green), and a merger of both channels ( C. Merge, yellow-organge for co-localization of AQP2 and SK3). Labeling is apparent for SK3 in both the cortex (label C) and medullary (label M) (dashed line shows cortical-medullary demarcation). Middle Pannel (D–F): Magnified view of the yellow inset box from A. SK3 co-localizes with all AQP2-postive tubules as show by the yellow-orange images (F., asterisk). SK3 staining is also apparent in AQP2-negative structures including other tubular structures (F., arrows) and smaller secondary structures (possibly vascular structures, F., arrow heads). Bottom Panel (G–H): Magnified view of staining in the presence of SK3 blocking peptide. All SK3 staining is abolished demonstrating specificity of our anti-SK3 antibody. Scale bar is 50 µm.

Article Snippet: Anti-AQP2 ATTO-550 , 1∶200 , Rabbit , Alomone.

Techniques: Labeling, Staining, Marker, Blocking Assay

Journal: PLoS ONE

Article Title: Emerging Role of the Calcium-Activated, Small Conductance, SK3 K + Channel in Distal Tubule Function: Regulation by TRPV4

doi: 10.1371/journal.pone.0095149

Figure Lengend Snippet: Section (5 µm) from WT mouse kidney showing staining for AQP2 (red), a marker of PCs in collecting duct, and SK3 (green). Panels A, C, and E are low magnification views of a cross-section through a CCD identified by AQP2 staining. Panels B, D, and F represent a magnified view of the inset area from A (yellow inset box). Panel B shows strong AQP2 staining along the luminal border of PCs (5–6 cells), but not of the ICs (2 cells without staining). As shown in D and F , strong staining of SK3 is evident along the luminal border of all cells, both PCs and ICs. Variable, but weak staining, is also apparent along the abluminal border of some cells. However, the staining is most pronounced along the luminal border for both PCs and ICs, although typically stronger in PCs, as indicated by the SK3 fluorescence line intensity profiles across (luminal to abluminal direction) two cells identified as PC and IC ( Panel G ). H . Relative mean intensity profiles (± SEM) across the cells from all sections showing the maximal values across the luminal border (Apical) and abluminal border (Basal) and the minimal values within the cytoplasm (Cytosol). The mean values are given for both PCs (n = 37) and ICs (n = 12) from all sections analyzed. The maximal luminal intensity is much greater than the abluminal intensity (*P<0.02) indicating dominant expression at the luminal border. Scale bar is 10 µm.

Article Snippet: Anti-AQP2 ATTO-550 , 1∶200 , Rabbit , Alomone.

Techniques: Staining, Marker, Fluorescence, Expressing

Journal: Heart rhythm : the official journal of the Heart Rhythm Society

Article Title: A Novel Trafficking-defective HCN4 Mutation is Associated with Early-Onset Atrial Fibrillation

doi: 10.1016/j.hrthm.2014.03.002

Figure Lengend Snippet: A & B, illustration of a HCN4 -subunit with the cytoplasmic NH2- and COOH-terminus, six transmembrane segments (S1–S6), including the S4 voltage sensor (‘+’ sign denotes amino acid residues with positive charge), the pore loop between S5 and S6, and the C-linker (CL) with the cyclic-nucleotide binding domain (CNBD). The red (seven) and blue (three) circles denote the location of the novel variants identified in the early-onset AF cases and referents, respectively.

Article Snippet: Thirty-six hours after transfection, the cells were rinsed with PBS, fixed in 4% cold paraformaldehyde, blocked in 10% horse serum and immunolabeled with primary rabbit anti-HCN4 (Alomone labs) and Alexa546-conjugated secondary antibody (Invitrogen).

Techniques: Binding Assay

Journal: Heart rhythm : the official journal of the Heart Rhythm Society

Article Title: A Novel Trafficking-defective HCN4 Mutation is Associated with Early-Onset Atrial Fibrillation

doi: 10.1016/j.hrthm.2014.03.002

Figure Lengend Snippet: A, current recordings of wild type HCN4, p.Lys189Arg and p.Gly1077Ser channels (see methods). B, plots of activation curves for wild type HCN4, p.Lys189Arg and p.Gly1077Ser. C & D, plots of V1/2 and k for wild type HCN4 and the seven variants. The dashed black line through p.Pro257Ser denotes the lack of measureable current (see figure 3). The V1/2 and k for the six variants expressing current were not significantly different from wild type (t-test, p> 0.05). The numbers in the parentheses represent the number of cells.

Article Snippet: Thirty-six hours after transfection, the cells were rinsed with PBS, fixed in 4% cold paraformaldehyde, blocked in 10% horse serum and immunolabeled with primary rabbit anti-HCN4 (Alomone labs) and Alexa546-conjugated secondary antibody (Invitrogen).

Techniques: Activation Assay, Expressing

Journal: Heart rhythm : the official journal of the Heart Rhythm Society

Article Title: A Novel Trafficking-defective HCN4 Mutation is Associated with Early-Onset Atrial Fibrillation

doi: 10.1016/j.hrthm.2014.03.002

Figure Lengend Snippet: Electrophysiology properties of wild type and variant HCN4 channels.

Article Snippet: Thirty-six hours after transfection, the cells were rinsed with PBS, fixed in 4% cold paraformaldehyde, blocked in 10% horse serum and immunolabeled with primary rabbit anti-HCN4 (Alomone labs) and Alexa546-conjugated secondary antibody (Invitrogen).

Techniques: Variant Assay, Expressing

Journal: Heart rhythm : the official journal of the Heart Rhythm Society

Article Title: A Novel Trafficking-defective HCN4 Mutation is Associated with Early-Onset Atrial Fibrillation

doi: 10.1016/j.hrthm.2014.03.002

Figure Lengend Snippet: A, Currents were elicited from a holding current of -35 mV to a test pulse of -150 mV (fully-activated voltage) for 4 seconds and returned back to the holding current. The wild type HCN4 channel produced a current and the p.Pro257Ser mutant did not. B, confocal micrographs of wild type HCN4 and p.Pro257Ser channels expressed in CHO cells. The cells were stained with rabbit anti-HCN4 antibody (green) and DAPI (blue). The wild type HCN4 channel is expressed on the cell membrane and in the cytoplasm, whereas the p.Pro257Ser mutant channel is restricted to the cytoplasm. The scale bar denotes 50μm.

Article Snippet: Thirty-six hours after transfection, the cells were rinsed with PBS, fixed in 4% cold paraformaldehyde, blocked in 10% horse serum and immunolabeled with primary rabbit anti-HCN4 (Alomone labs) and Alexa546-conjugated secondary antibody (Invitrogen).

Techniques: Produced, Mutagenesis, Staining

Journal: Heart rhythm : the official journal of the Heart Rhythm Society

Article Title: A Novel Trafficking-defective HCN4 Mutation is Associated with Early-Onset Atrial Fibrillation

doi: 10.1016/j.hrthm.2014.03.002

Figure Lengend Snippet: A, current recordings of wild type HCN4, p.Asn688Ser and p.Arg1068His channels. B, plots of activation curves for wild type HCN4, p.Asn688Ser and p.Arg1068His channels. C & D, plots of V1/2 and k for wild type HCN4 and the three mutants. The V1/2 and k for the three mutants were not significantly different from wild type (t-test, p> 0.05). The numbers in parentheses represent the number of analyzed cells.

Article Snippet: Thirty-six hours after transfection, the cells were rinsed with PBS, fixed in 4% cold paraformaldehyde, blocked in 10% horse serum and immunolabeled with primary rabbit anti-HCN4 (Alomone labs) and Alexa546-conjugated secondary antibody (Invitrogen).

Techniques: Activation Assay

Journal: Heart rhythm : the official journal of the Heart Rhythm Society

Article Title: A Novel Trafficking-defective HCN4 Mutation is Associated with Early-Onset Atrial Fibrillation

doi: 10.1016/j.hrthm.2014.03.002

Figure Lengend Snippet: A, current recordings of wild type HCN4 (2 μg) and wild type HCN4 (1 μg)+p.Pro257Ser (1 μg). B, plot of current density (pA/pF) measured at -150 mV for wild type HCN4 and wild type HCN4+p.Pro257Ser. C, plots of activation curves for wild type HCN4 and wild type HCN4+p.Pro257Ser. The number in parentheses represents the number of cells. D, confocal micrographs of co-expressed wild type HCN4 and p.Pro257Ser constructs tagged with unique C-terminal epitopes in CHO cells (see methods); i) wild type HCN4-myc (green)+ wild type HCN4-V5 (red) and ii) wild type HCN4-myc (green)+p.Pro257Ser-V5(red). Co-expressed wild type HCN4-myc and wild type HCN4-V5 channels both traffick and are distributed together on cell membrane. ii) wild type HCN4-myc +p.Pro257Ser-V5 images show the wild type HCN4-myc channel expressed on the cell membrane and the p.Pro257Ser-V5 channel distributed in the cytoplasm and not on the cell membrane. Cells were also stained with DAPI (blue) to visualize the nucleus which is shown in the merged images. The scale bar denotes 50μm.

Article Snippet: Thirty-six hours after transfection, the cells were rinsed with PBS, fixed in 4% cold paraformaldehyde, blocked in 10% horse serum and immunolabeled with primary rabbit anti-HCN4 (Alomone labs) and Alexa546-conjugated secondary antibody (Invitrogen).

Techniques: Activation Assay, Construct, Staining

Journal: The Journal of neuroscience : the official journal of the Society for Neuroscience

Article Title: Sound Rhythms Are Encoded by Postinhibitory Rebound Spiking in the Superior Paraolivary Nucleus

doi: 10.1523/JNEUROSCI.2450-11.2011

Figure Lengend Snippet: SPON neurons express HCN1 and HCN2 channels and have large Ih inwardly rectifying (IR) currents. A, HCN1 immunoreactivity in the superior olivary complex of an adult mouse. The low-magnification micrograph illustrates that the lateral superior olive expresses the strongest HCN1-like immunostaining, the SPON displays moderate levels of expression, and the MNTB shows the weakest immunoreactivity. At higher magnification, it is evident that both somata (arrowheads) and dendrites (arrow) of SPON neurons are immunopositive. Asterisks denote landmarks in slice. Scale bars: left, 200 μm; right, 50 μm. B) HCN2 is most strongly expressed in the MNTB, whereas expression in the LSO is weakest. At higher magnification, it is evident that SPON neurons are also immunopositive. Asterisks denote landmarks in slice. Scale bars: left, 200 μm; right, 50 μm. C, Current traces recorded from an SPON neuron induced by hyperpolarization from a holding current of −62 to −122 mV, in −10 mV voltage steps, under control conditions (top) and during pharmacological blockade of Ih with 20 μM ZD7288 (bottom). D, The size of the IR current was measured at steady state (i.e., ~1.35 s after induction) at each hyperpolarizing voltage (n = 42). The IR currents were significantly diminished by ZD7288 (n = 6) in the SPON neurons. ***p < 0.001, Student’s t test. E, Average activation time constants of the IR currents in SPON neurons were obtained by fitting a single-exponential function to the current traces.

Article Snippet: Sections were incubated in 2% normal donkey serum in blocking solution overnight at 4°C with one of the following primary antibodies: polyclonal rabbit α -HCN1 (1:250, lot number AN-10; Alomone Labs), which is directed against amino acid residues 6–24 of the intracellular N terminus of rat HCN1 (GenBank accession number {"type":"entrez-protein","attrs":{"text":"Q9JKB0","term_id":"29840774","term_text":"Q9JKB0"}} Q9JKB0 ); polyclonal rabbit α -HCN2 (1:400, lot number AN-08; Alomone Labs), directed against amino acids 147–161 of the intracellular N terminus of human HCN2 (GenBank accession number {"type":"entrez-protein","attrs":{"text":"Q9UL51","term_id":"108935843","term_text":"Q9UL51"}} Q9UL51 ); or monoclonal mouse α -HCN2 (1:400, clone N71/37; NeuroMab, UC Davis/NIH NeuroMab Facility) directed against amino acids 761–863 of the C terminus of rat HCN2 (GenBank accession number {"type":"entrez-protein","attrs":{"text":"Q9JKA9","term_id":"83303515","term_text":"Q9JKA9"}} Q9JKA9 ) used in combination with a mouse-on-mouse kit (Vector Laboratories).

Techniques: Immunostaining, Expressing, Activation Assay

Journal: Methods in molecular biology (Clifton, N.J.)

Article Title: Detecting Purinosome Metabolon Formation with Fluorescence Microscopy

doi: 10.1007/978-1-4939-7759-8_17

Figure Lengend Snippet: Colocalization of endogenous FGAMS and GART for visualization of purinosomes by immunofluorescence. Purine-depleted HeLa cells were fixed and permeabilized prior to being probed for with FGAMS rabbit polyclonal antibody and GART mouse monoclonal antibody. Fluorescently labeled secondary antibodies CF488A-conjugated donkey anti-rabbit and CF568-conjugated donkey anti-mouse were used to visualize the expression and localization of FGAMS and GART, respectively. A representative image of an individual cell was captured using a 100× oil objective on an Olympus Fluoview 1000 confocal laser scanning microscope. Sequential imaging of CF488A and CF568 showed colocalization of (a) FGAMS with (b) GART as represented by the yellow puncta present in (c) the merged image. Scale bar: 10 μm

Article Snippet: Primary antibody solution: 1:500 dilution of PFAS rabbit polyclonal antibody (Bethyl Laboratories) and 1:1000 dilution of GART mouse monoclonal antibody (Novus Biologicals) prepared in blocking buffer.

Techniques: Immunofluorescence, Labeling, Expressing, Laser-Scanning Microscopy, Imaging