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6 protocols using alexa fluor 647 donkey anti rabbit igg h l antibody

1

Fluorescence Microscopy of NF-κB Translocation

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Translocation of NF‐kB to the nucleus was evaluated by fluorescence microscopy. Briefly, after 24 h treatment, PBMC were washed in PBS and fixed with −20°C methanol for 20 min. Then, cells were washed, incubated with 0.1% Triton X‐100 for 10 min, blocked with 1% BSA for 1 h, and incubated with rabbit polyclonal anti‐NF‐kB p65 (phosphor S536, Abcam, Cambridge, UK) as primary antibody and Alexa Fluor 647‐donkey anti‐rabbit IgG (H+L) antibody (Life Technologies, Carlsbad, CA) as secondary antibody at room temperature. The slides were extensively washed with PBS and viewed with a fluorescence microscope. DAPI was used as nuclei‐specific dye.
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2

Chromatin Immunoprecipitation for Epigenetic Markers

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U2OS cells stably expressing CRISPR-EChO and sgRNA were seeded at 10% confluence in 24-well μ-plate (Ibidi 82406) and treated with 100 μM abscisic acid (Sigma A1049) or DMSO (Sigma D2650) vehicle for 2 days. Cells were fixed in 4% paraformaldehyde (ThermoFisher 28906) for 15 m, then rinsed 3 times with DPBS (Life Technologies 14190-250) for 5 m each. Fixed cells were blocked in 5% normal donkey serum (Jackson ImmunoResearch Laboratories 017-000-121) and 0.3% Triton X-100 (ThermoFisher 85111) in DPBS for 1 h at room temperature, then incubated overnight in at 4°C with primary antibodies. Samples were rinsed 3 times with DPBS for 5 m each, then incubated with secondary antibody 2 h at room temperature in the dark with agitation. Samples were rinsed 3 times with DPBS for 5 m each, then stored in DPBS for imaging.
Primary antibodies used in this study are Anti-Histone H3 (tri methyl K9) antibody - ChIP Grade (Abeam ab8898) used at 1:500 dilution, Anti-CBX1 / HP1 beta antibody (Abeam ab10478) used at 1:200 dilution, and Anti-KAP1 antibody - ChIP Grade (Abcam ab10483) used at 1:500 dilution. The secondary antibody used in this study is Alexa Fluor® 647 Donkey Anti-Rabbit IgG (H+L) Antibody (Life Technologies A31573) used at 1:500 dilution.
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3

CRISPR-EChO Assay for Chromatin Modifications

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U2OS cells stably expressing CRISPR-EChO and sgRNA were seeded at 10% confluence in 24well μ-plate (Ibidi 82406) and treated with 100 μM abscisic acid (Sigma A1049) or DMSO (Sigma D2650) vehicle for 2 days. Cells were fixed in 4% paraformaldehyde (ThermoFisher 28906) for 15 m, then rinsed 3 times with DPBS (Life Technologies 14190-250) for 5 m each. Fixed cells were blocked in 5% normal donkey serum (Jackson ImmunoResearch Laboratories 017-000-121) and 0.3% Triton X-100 (ThermoFisher 85111) in DPBS for 1 h at room temperature, then incubated overnight in at 4°C with primary antibodies. Samples were rinsed 3 times with DPBS for 5 m each, then incubated with secondary antibody 2 h at room temperature in the dark with agitation. Samples were rinsed 3 times with DPBS for 5 m each, then stored in DPBS for imaging. Primary antibodies used in this study are Anti-Histone H3 (tri methyl K9) antibody -ChIP Grade (Abcam ab8898) used at 1:500 dilution, Anti-CBX1 / HP1 beta antibody (Abcam ab10478) used at 1:200 dilution, and Anti-KAP1 antibody -ChIP Grade (Abcam ab10483) used at 1:500 dilution. The secondary antibody used in this study is Alexa Fluor® 647 Donkey Anti-Rabbit IgG (H+L) Antibody (Life Technologies A31573) used at 1:500 dilution.
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4

Immunophenotyping of Human Skin Samples

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4 mm punch biopsy specimens of human skin were formalin fixed and paraffin embedded as previously described (91 (link)). Primary antibodies used were: anti-human CD4 monoclonal antibody (Invitrogen, N1UG0), anti-human IL-17A biotinylated antibody (R&D Systems, BAF317), anti-human CD69 antibody (Novus Biologicals, 8B6), anti-human CD103 (Abcam, EPR4166-2), and recombinant anti-Ki67 (Abcam, SP6). Secondary antibodies used were: Alexa Fluor 555 rabbit anti-PE polyclonal antibody (VWR), Alexa Fluor 647 donkey anti-Rabbit IgG (H+L) antibody (Invitrogen, A21147), Alexa Fluor 555 goat anti-mouse IgG2a antibody (Invitrogen, A-21242), Alexa Fluor 633 goat anti-mouse IgG1 polyclonal antibody (Invitrogen), Alexa Fluor 488 goat anti-rabbit IgG (H+L) polyclonal antibody (Invitrogen). Slides were imaged with a Mantra Quantitative Pathology Imaging microscope (PerkinElmer) by the Human Skin Disease Resource Center at Brigham & Women’s Hospital, Harvard Medical School.
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5

Fluorescent Immunolabeling of Cellular Markers

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Anti-pericentriolar material 1 (PCM1) antibody (rabbit polyclonal, Atlas Antibodies, #HPA023370, dilution 1:200), anti-Myc antibody (rabbit polyclonal, Invitrogen, #PA1-981, dilution 2μg), and anti-phospholamban (PLN) antibody [2D12] (mouse monoclonal, Abcam, #ab2865, dilution 1:100) were used. The following fluorophore-conjugated secondary antibodies were used: Alexa Fluor 488 Goat Anti-Rabbit IgG (H+L) Antibody, 1:400 (Invitrogen), Alexa Fluor 555 Goat Anti-Mouse IgG (H+L) Antibody, 1:400 (Invitrogen), Alexa Fluor 647 Donkey Anti-Mouse IgG (H+L) Antibody, 1:400 (Invitrogen), and Alexa Fluor 647 Donkey Anti-Rabbit IgG (H+L) Antibody, 1:400 (Invitrogen).
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6

Immunofluorescence Analysis of CD63, DSP, and Amelogenin

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Tissue sections were incubated with anti-CD63 (1:200, Santa Cruz Biotechnology, Santa Cruz, CA, USA). Tissue sections from Rab27aash/ash mutant mice were incubated with anti-DSP (1:100, Santa Cruz) and anit-amelogenin (1:200, Santa Cruz). Secondary antibodies, Alexa Fluor 647 donkey anti-rabbit IgG (H+L) antibody (1:2000, Invitrogen) or Alexa Fluor 488 donkey anti-goat IgG (H+L) antibody (1:2000, Invitrogen), were applied for 60 min at room temperature. Samples were sealed with Vecta shield mounting medium containing DAPI. Images were taken by using a Nikon A1 Confocal or Leica DMI6000B.
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