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7 protocols using ab279290

1

Immunofluorescent Staining of Rat Spinal Cord

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The L4–L5 spinal cord tissues of three rats in each group were selected and fixed in 10% neutral formalin, dehydrated in ethanol, embedded in wax, and then sectioned at a thickness of 4 µm. Spinal cord sections were dewaxed and incubated overnight at 4 °C with CD80 antibody (1:100, bs-2211R, Bioss, Beijing, China) and Iba-1 antibody (1:100, ab283319, Abcam, Cambridge, UK); CD206 antibody (1:100, DF4149, Affinity, Suzhou, China) and Iba-1 antibody (1:100, ab283319, Abcam, Cambridge, UK) were mixed and incubated overnight at 4 °C; C3 antibody (1:100, DF13224, Affinity, Suzhou, China) and GFAP antibody (1:100, ab279290, Abcam, Cambridge, UK) were mixed and incubated overnight at 4 °C; S100A10 antibody (1:100, bs-8503, Bioss, Beijing, China) and GFAP antibody (1:100, ab279290, Abcam, Cambridge, UK) were mixed and incubated overnight at 4 °C. Goat anti-rabbit IgG H&L (Alexa Flour 488,1:200, ab150077, Abcam, Cambridge, UK) and goat anti-mouse IgG H&L (Alexa Flour 647,1:200, ab150115, Abcam, Cambridge, UK) were used as secondary antibodies. Tissue sections were immunofluorescently stained and then observed under a laser confocal microscope (SP8, Leica, Wetzlar, Germany) and photographed. Fluorescence quantitative analysis was performed by Image J software.
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2

Immunofluorescent Analysis of NSC Differentiation

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Cells were fixed with 4% paraformaldehyde for 15-30 min at room temperature. After washing with PBS for three times, the cells were covered with 4% BSA solution containing 0.1% Triton X-100 at room temperature for 1 h and then incubated overnight with 4% BSA-diluted primary antibodies β-tubulin III (1:500, ab215037; Abcam) and GFAP (ab279290, 1:50; Abcam). The samples were removed from the 4˚C condition on the second day, reheated at room temperature for 30 min and then incubated with goat anti-rabbit IgG Cy5 (1:500, bs-0295G-Cy5; Bioss) or goat anti-mouse IgG FITC (1:500, bs-0296G-FITC; Bioss) at room temperature for 1 h. The solution was then discarded, and the samples were washed with PBS for three times. Nuclei were stained at room temperature with Hoechst 33342 (C0030; Beijing Solarbio Science & Technology Co., Ltd.). The NSCs differentiation were identified by detecting the expression of β-tubulin III and GFAP under a fluorescence microscope (scale bar, 20 µm; Zeiss AG).
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3

Immunostaining of Cellular Markers

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The following antibodies were applied: Tetraspanin-4 (NBP1-59438, Novus); RPE 65 (MA1-16578; Thermo Fisher Scientific); GFAP (ab279290, Abcam); CD11b (ab8878, Abcam); integrin α5 (ab288767, Abcam); EOGT (ab190693, Abcam); NDST1 (26203-1-AP, Proteintech); Alix (2171, Cell Signaling); Alix (92,880, Cell Signaling); Smad2/3 (3102, Cell Signaling); Phospho-Smad2/Smad3 (8828, Cell Signaling); Alpha-Smooth Muscle Actin (MA5-11547, Thermo Fisher Scientific); GAPDH (5174, Cell Signaling) and β-actin Rabbit antibodies (ab8227, Abcam). Secondary antibodies used included the following: Alexa Fluor 488 Anti-Mouse; Alexa Fluor 555 Anti-Rabbit; Alexa Fluor 555 Anti-Mouse; and Alexa Fluor 555 Anti-Rabbit (Thermo Fisher Scientific). Additionally, CCK8 (ab228551, Abcam), Dulbecco’s modified Eagle’s medium (DMEM)/F12 culture media, and fetal bovine serum were obtained from Thermo Fisher Scientific.
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4

Immunohistochemical Analysis of Sertad1 Expression in Murine Brain

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Mice were anesthetized 48 h after reperfusion, transcardially perfused with phosphate-buffered saline (PBS), and fixed with 4% paraformaldehyde. Their brains were rapidly removed and postfixed with 4% paraformaldehyde. Brains were then immersed in 20% and 30% sucrose overnight at 4°C, embedded in Tissue-Tek OCT compound (Sakura, Japan), and subjected to section on a freezing microtome. The sections (10 μm) were washed with PBS and blocked in QuickBlock™ immunostaining blocking solution (Beyotime, China) for 1 h at room temperature and incubated overnight at 4°C with the following primary antibodies: rabbit anti-Sertad1 (1:200, ARP34309_T100; AVIVA, USA), mouse anti-NeuN (1:100, 66836-1-Ig; Proteintech, China), mouse anti-GFAP (1:200, ab279290; Abcam, USA), mouse anti-Iba1 (1:500, GT10312; GeneTex, USA). After washing, the sections were incubated with Alexa Fluor Plus 488 goat anti-rabbit secondary antibody (1:200, A32731; Thermo Fisher Scientific, USA) or Alexa Fluor Plus 555 goat anti-mouse secondary antibody (1:200, A32727; Thermo Fisher Scientific) at 37°C for 1 h. DAPI (Beyotime) was used to stain cellular nuclei at 37°C for 10 min. Finally, the sections were photographed using a microscope with a digital camera (Olympus, Japan).
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5

Immunofluorescence Staining of Neural Markers

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The procedure for immunofluorescence staining is described in previous studies.19 The following primary antibodies were used: GFAP (1:500, rabbit, cat # ab279290, Abcam); PSD‐95 (1:500; mouse, MA1‐046, Thermo); Megf10 (1:200; rabbit, 32160702, Sigma); LAMP2 (1:200; rabbit, YT5711, Imunoway). Tissues were incubated at 4°C for 2 days, followed by incubation with the corresponding secondary antibodies of Alexafluor 488 or 594 (1:500, Abcam) for 1 hour at room temperature. Samples were mounted using Vectashield containing DAPI for cell nuclei staining (ab104139, Abcam).
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6

Protein Extraction and Western Blot Analysis

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The cell suspension was centrifuged at 300 x g for 5 min at room temperature, and the supernatant was discarded, total protein was extracted from cells using lysis buffer (cat. no. P0013; Beyotime Institute of Biotechnology) with protease inhibitors PMSF(ST506; Beyotime) and kept on ice for 30 min. Protein concentrations were determined by Bradford assay and then 20 µg each protein sample were boiled for 5 min, separated by 10% SDS-PAGE, transferred onto a PVDF membrane, blocked with 5% skim milk in TBST buffer (20% Tween) for 3 h at room temperature and then incubated with primary antibodies at 4˚C overnight. Primary antibodies were Nestin (1:1,000, ab6320; Abcam), Sox2 (1:1,000, ab171380; Abcam), GFAP (1:1,000, ab279290; Abcam), Map2 (1:1,000, ab281588; Abcam), ERRα (1:1,000, bs-6998R; Bioss), TGF-β1 (1:1,000, ab215715; Abcam), α-tubulin (1:10,000, ab7291; Abcam), AURKB (1:10,000, ab45145; Abcam) and Id2 (1:500, ab90055; Abcam). The membranes were then washed three times with TBST and incubated with a secondary antibody (1:30,000, Goat Anti-Mouse IgG H&L/HRP, bs-40296G-HRP; 1:30,000, Goat Anti-Rabbit IgG H&L/HRP antibody, bs-40295G-HRP; Bioss) at room temperature for 1 h. Protein bands were visualized using ECL (MilliporeSigma).
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7

Immunofluorescent Staining of Brain Tissues

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Mice were anesthetized at 72 h after I/R and perfused with PBS and 4% paraformaldehyde. The brain was removed from each animal and fixed with 4% paraformaldehyde overnight, transferred to 20 and 30% sucrose, and cut into 5 μm-thick sections on a freezing microtome. After washing and blocking, the sections were incubated overnight at 4°C with the following primary antibodies: anti-Rab20 (1:200; 11616-1-AP, Proteintech Group, Inc., Wuhan, China), anti-NeuN (1:100; 66836-1-Ig, Proteintech Group, Inc.), anti-IBA1 (1:500; 011-27991, Fujifilm Wako, Japan), and anti-GFAP (1:200; ab279290, Abcam, Cambridge, MA, USA). After washing, the sections were incubated with donkey anti-rabbit Alexa fluor 488 secondary antibody (1:500; ab150073, Abcam), donkey anti-rabbit Alexa fluor 555 secondary antibody (1:500; A31572, Thermo Fisher Scientific, MA, USA), donkey anti-mouse Alexa fluor plus 555 secondary antibody (1:500; A32773, Thermo Fisher Scientific, MA, USA), and donkey anti-goat Alexa fluor plus 555 secondary antibody (1:500; A32816, Thermo Fisher Scientific) for 2 h at room temperature in the dark. Finally, the nuclei were stained by 4′,6-diamidino-2-phenylindole (DAPI) for 15 min.
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