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5 protocols using f3165 2 mg

1

Comprehensive Protein Extraction and Analysis

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For protein extraction, seedlings were frozen in liquid nitrogen, ground into powder, then resuspended in 2× SDS buffer (0.125 M Tris-HCl [pH 6.8], 4% SDS, 20% glycerol, 1× cocktail of protease and phosphatase inhibitors, 1 mM PMSF). Samples were heated for 10 min at 65 °C, then centrifuged at 13,000 × g for 10 min at room temperature. The supernatants were transferred into new tubes, and the total protein concentrations were determined by the BCA method. Equal amounts of total proteins were separated in 10% sodium dodecyl sulfate (SDS)-polyacrylamide gels and then transferred onto PVDF membranes. The subsequent immunoblots were performed as previously described52 (link). Antibodies used in this study were anti-HY5 (A gift from Rongcheng Lin’s lab, 1:1000 dilution), anti-BZR1 (A gift from Jianming Li’s lab, 1:1000 dilution), anti-Histone H3 (05-499, Millipore, 1:1000 dilution), anti-HSP (AbM51099-31-PU, Beijing Protein Innovation, 1:5000 dilution), anti-HA (H9658-.2 ML, Sigma-Aldrich, 1:2000 dilution), anti-Flag (F3165-.2MG, Sigma-Aldrich, 1:2000 dilution), Anti-phospho-GSK3 (Tyr279/Tyr216) (05-413, Millipore, 1:1000 dilution), anti-MBP (#E8031S, New England Biolabs, 1:5000 dilution), anti-His (H1029-.2ML, Sigma-Aldrich, 1:2000 dilution), and anti-GST (#2625, Cell Signaling Technology, 1:1000 dilution).
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2

Generation of Flag-tagged HBx Plasmid

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The Flag-tagged HBx plasmid was generated by inserting the full-length cDNA amplified by PCR into the 2xFlag-pcDNA3 vector between the EcoRI and XhoI sites, using the following primers, 5′-CGGAATTCAATGGCTGCTCGGGTGTGC-3′ and 5′-CCGCTCGAGTTAGGCAGAGGTGAAAAAGTTGC-3′. The plasmids encoding TAp63γ and ΔNp63 were described previously.[22 (link)] The antibodies of anti-Myc (Catalog No. 60003-1, Proteintech, Hubei, China), anti-p21 (Catalog No. #2947, Cell Signaling Technology, Danvers, MA, USA), anti-β-actin (Sc-47778, Santa Cruz, CA, USA), anti-p63 (4A4) (Sc-8431, Santa Cruz), anti-Flag (Sigma-Aldrich, F3165-2MG, St louis, MO, USA), and the secondary antibody for mice (Catalog No. ARG65350, Arigo, Shanghai, China) were commercially purchased.
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3

Immunostaining of Lentivirus-Transduced Brain Sections

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Lentivirus injected brain sections were post-fixed with 4% PFA for 10 min. Then both lentivirus injected and hNPC injected brain sections were washed with PBS three times and incubated 30 min with blocking solution (PBS/0,1% Triton X-100 containing 10% normal goat serum [Sigma-Aldrich]) and then incubated overnight at 4 °C in blocking solution with primary antibodies: mouse anti-Flag (Sigma, F3165–2 MG, 1:1000); rabbit anti-red fluorescence protein (RFP) (Invitrogen, R10367, 1:1000); rabbit anti-PAX6 (Abcam, ab5790, 1:50); mouse anti-Nestin (Abcam, ab22035, 1:100), rabbit anti-Ki67 (Abcam, ab15580, 1:1000) and mouse anti-human nuclear antigen (Abcam, ab191181, 1:1000). Sections were washed with PBS and incubated for 1 h at room temperature with the secondary antibodies: goat anti-mouse IgG Alexa Fluor 488 (Thermo Fisher, A31560, 1:500); goat anti-rabbit IgG TRITC (Abcam, ab6718, 1:1000) and goat anti-mouse IgG Alexa Fluor 647 (Invitrogen, A32728, 1:1000) diluted in blocking solution. The sections were washed with PBS and mounted with Vectashield Antifade Mounting Medium (Vector Labs, H-1000). Immunofluorescence was visualized and imaged with a Keyence BZ-X810 microscope.
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4

Immunostaining of Lentivirus-Transduced Brain Sections

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Lentivirus injected brain sections were post-fixed with 4% PFA for 10 min. Then both lentivirus injected and hNPC injected brain sections were washed with PBS three times and incubated 30 min with blocking solution (PBS/0,1% Triton X-100 containing 10% normal goat serum [Sigma-Aldrich]) and then incubated overnight at 4 °C in blocking solution with primary antibodies: mouse anti-Flag (Sigma, F3165–2 MG, 1:1000); rabbit anti-red fluorescence protein (RFP) (Invitrogen, R10367, 1:1000); rabbit anti-PAX6 (Abcam, ab5790, 1:50); mouse anti-Nestin (Abcam, ab22035, 1:100), rabbit anti-Ki67 (Abcam, ab15580, 1:1000) and mouse anti-human nuclear antigen (Abcam, ab191181, 1:1000). Sections were washed with PBS and incubated for 1 h at room temperature with the secondary antibodies: goat anti-mouse IgG Alexa Fluor 488 (Thermo Fisher, A31560, 1:500); goat anti-rabbit IgG TRITC (Abcam, ab6718, 1:1000) and goat anti-mouse IgG Alexa Fluor 647 (Invitrogen, A32728, 1:1000) diluted in blocking solution. The sections were washed with PBS and mounted with Vectashield Antifade Mounting Medium (Vector Labs, H-1000). Immunofluorescence was visualized and imaged with a Keyence BZ-X810 microscope.
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5

Quantifying Aquaporin Expression in Oocytes

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The total and surface biotinylated samples from oocytes AQP injected with cRNA encoding for AQPs or H2O-injected controls, were separated by SDS-PAGE on 12% Tris-glycine gels. The samples were transferred to PVDF membranes and incubated in TBST with 5% of milk for 1 h at room temperature. The membranes were probed overnight at 4°C with polyclonal anti-hAQP1 (AQP11-A, Alpha Diagnostics, San Antonio, USA), anti-rAQP3 (AQP31-A, Alpha Diagnostics), hAQP7 (AQP71-A, Alpha Diagnostics), anti-hAQP8 (AQP81-A, Alpha Diagnostics), anti-hAQP9 (AQP91-A, Alpha Diagnostics) or monoclonal anti-FLAG (F3165-2MG, Sigma Aldrich) antibodies. The protein expression was detected using ECL plus Western Blotting Detection Reagents (32132, Thermo Fisher Scientific) and the signals were detected on an Amersham Imager 600 (GE Healthcare).
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