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5 protocols using apc 087

1

Immunostaining of Mouse and Human PSCs

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Mouse and human PSCs were washed with PBS (pH 7.4) and fixed with 4% paraformaldehyde for 10 minutes at room temperature. The fixed cells were treated with 0.1% Triton X-100 (13 (link)). Cells were immunostained with a rabbit anti–TRPV4 antiserum (Alomone, ACC-034, 1:250; ref. 66 (link)), rabbit anti–Piezo1 antiserum (Alomone, APC-087, 1:300; ref. 11 (link)), rabbit anti-fibronectin antibody (Abcam, ab2413), rabbit anti–collagen type I antibody (Abcam, ab34710), or chicken anti-GFAP antibody (Abcam, 4674) for mouse PSCs or rabbit anti-GFAP (Cell Signaling Technology,12389) for human PSCs overnight at 2°C–8°C. Secondary antibodies included DyLight 488–conjugated anti–chicken IgG (Jackson ImmunoResearch, 703-546-155), DyLight 488–conjugated anti–rabbit IgG (Jackson ImmunoResearch, 711-546-152), or CY 3-conjugated anti–mouse IgG (Jackson ImmunoResearch, 715-166-150), used for 1 hour at room temperature. Nuclei were stained with Nunc blue (Invitrogen, R37606). All staining images were taken with a Zeiss Axio observer Z1 with a 20× or 40× objective.
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2

Immunofluorescence Analysis of Piezo1 and Piezo2

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For the immunofluorescence analysis of Piezo1 and Piezo2, the cells were fixed with 4% paraformaldehyde for 10 min, permeabilized with 0.1% Triton X-100 (Merck, #X100) for 10 min, blocked with 1% BSA (Sigma-Aldrich #A7030) for 30 min. Primary antibodies against Piezo1 (Alomone Labs, #APC-087) and Piezo2 (Alomone Labs, #APC-090) were incubated in PBS for 3 h at room temperature. Goat anti-rabbit secondary antibody, P conjugate, was used at a concentration of μg/mL in phosphate buffered saline containing 0.2% BSA for 1 h at room temperature. Nuclei were stained with DAPI. The neuronal component was stained with Tuji-1 (Sigma-Aldrich, #T3952)). The images were captured at 40X magnification using Eclipse Series TiE, equipped with a C1 confocal.
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3

Immunofluorescence Staining of PIEZO1

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Cells seeded in flow chambers were fixed with 4% formaldehyde in PBS (Carl Roth 3105.2) for 20 min at room temperature and subsequently permeabilized with 0.1% Triton-X (Axonlab 10029070) and 0.5% bovine albumin serum (BSA, VWR P6154) in PBS for 10 min. Samples were incubated with specific primary antibodies in PBS with 3% BSA for 1 h and afterwards with a secondary fluorescently-labelled antibody. Between every step samples were washed three times with PBS. Primary antibodies were used against PIEZO1 (Novus Biologicals NBP1-78446 for human cells, 1:25; Alomone Labs APC-087 for rat cells, 1:300). Actin filaments were stained with Alexa Fluor 568 phalloidin (Thermo Fisher Scientific A12380, 1:200) and cell nuclei with NucBlue (Thermo Fisher Scientific R37605). Alexa Fluor 488 conjugated donkey anti-rabbit (Thermo Fisher Scientific A-21206, 1:100) was used as a secondary antibody. Immunofluorescence images were acquired with the iMic spinning disk confocal microscope using an oil-immersion 60x (N.A. 1.35) objective.
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4

Immunofluorescence Staining of PIEZO1

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Cells seeded in flow chambers were fixed with 4% formaldehyde in PBS (Carl Roth 3105.2) for 20 min at room temperature and subsequently permeabilized with 0.1% Triton-X (Axonlab 10029070) and 0.5% bovine albumin serum (BSA, VWR P6154) in PBS for 10 min. Samples were incubated with specific primary antibodies in PBS with 3% BSA for 1 h and afterwards with a secondary fluorescently-labelled antibody. Between every step samples were washed three times with PBS. Primary antibodies were used against PIEZO1 (Novus Biologicals NBP1-78446 for human cells, 1:25; Alomone Labs APC-087 for rat cells, 1:300). Actin filaments were stained with Alexa Fluor 568 phalloidin (Thermo Fisher Scientific A12380, 1:200) and cell nuclei with NucBlue (Thermo Fisher Scientific R37605). Alexa Fluor 488 conjugated donkey anti-rabbit (Thermo Fisher Scientific A-21206, 1:100) was used as a secondary antibody. Immunofluorescence images were acquired with the iMic spinning disk confocal microscope using an oil-immersion 60x (N.A. 1.35) objective.
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5

Immunohistochemical Detection of Piezo1 in Bladder

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For IHC, bladder sections stained with H&E were incubated overnight at 4 °C with primary antibody against Piezo1 (Alomone labs, APC-087, 1:100). Phosphate-buffered saline (PBS) was substituted for the primary antibody as a negative control. Following incubation with primary antibody, the sections were incubated with a streptavidin–biotin peroxidase (SP)-conjugated secondary goat anti-rabbit IgG from a standard SP kit (Zhongshan Co., SPN-9002) for 30 min at 37 °C. Finally, the sections were stained with diaminobenzidine (DAB) (Zhongshan Co., ZLI-9019) and counterstained with hematoxylin. All sections were visualized and photographed with an optical microscope (Olympus) and evaluated by two individuals in a double-blind manner.
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