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4 protocols using anti osx

1

Immunohistochemical Analysis of Dlx3 and Osx in Molar Development

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The expressions of Dlx3 and Osx in mandibular first molars of both wild type and Bmp2-cKOod mice were analyzed by immunohistochemistry as described previously57 (link). MD10-F2 cells cultured on glass slides were fixed with cold methanol/acetone (1:1) for 10 minutes and permeabilized with 0.5% Triton-X for 15 minutes. To block the non-specific binding of antibodies, slides were incubated with 10% goat serum for 30 minutes, followed by primary antibodies, anti-Dlx3 (Abcam) and anti-Osx (Santa Cruz), overnight at 4oC. After washing with PBS, slides were incubated with secondary IgG antibodies conjugated to Alexa-Fluor 568 (Invitrogen) were added and incubated for 1 hour. Hoechst (Pierce) was used to stain nucleus.
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2

Osteogenic Differentiation Markers Quantification

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Osterix and osteopontin bone-specific markers were assessed by confocal microscopy after 7 and 28 days of osteogenic differentiation. Constructs were fixed with 4% PFA for 8 h and permeabilized with 2% BSA/0.1% Triton X-100 solution at 4 °C. Next, samples were incubated 4 h at 37 °C with mouse polyclonal anti-Osx and goat polyclonal anti-Opn (Santa-Cruz Biotechnology, Heidelberg, Germany) antibodies. The bioconstructs were further incubated in tetramethylrodamine-5,6-isothiocyanate (TRITC) conjugated goat anti mouse and fluorescein isothiocyanate (FITC) conjugated rabbit anti goat secondary antibodies solutions for 1 h (Santa-Cruz Biotechnology, Heidelberg, Germany). Nuclei were stained with DAPI for 30 min. Finally, samples were visualized in confocal microscopy.
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3

Western Blot Analysis of Osteogenic Markers

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Western blot analysis was performed as in our previous report [63 (link)]. Briefly, the primary (anti-OCN, anti-OSX, anti-integrin α5, anti-integrin β1, anti-BMPR I, anti-BMPR II, anti-SMAD1/5/8, anti-P-SMAD1/5/8, anti-ERK1/2, anti-P-ERK1/2, anti-p38, anti-P-p38, anti-JNK, anti-P-JNK, or anti-β-actin; Santa Cruz Biotechnology) and secondary antibodies (goat anti-rabbit immunoglobulin G (IgG) or goat anti-mouse IgG conjugated to horseradish peroxidase) were employed with the dilutions recommended by the supplier. The blots were developed using enhanced chemiluminescence (Santa Cruz Biotechnology) and developed using X-ray film (Eastman-Kodak, Rochester, NY, USA).
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4

Western Blot Analysis of Osteogenic Markers

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Proteins (30 μg) were dissolved in sample buffer, and electrophoresis was carried out at a current of 25 mA for 2 h. Proteins were transferred from SDS-PAGE onto nitrocellulose membranes (Schleicher & Schuell, Dassel, Germany). Membranes were blocked for 1 h with 5% nonfat dry milk in PBS containing 0.1% Tween-20 (PBS-T) and incubated overnight with anti-Osx (Santa Cruz Biotechnology), TβRII (Santa Cruz Biotechnology), Runx2 (Abcam), DMP1 (TaKaRa Bio, Shiga, Japan), Bsp (Abcam), Opn (Abcam), Cyclin D1 (Santa Cruz Biotechnology) and β-Actin (Santa Cruz Biotechnology) IgG diluted in PBS-T buffer at 4 °C. After washing, the membranes were incubated with anti-rabbit or mouse-IgG conjugated horseradish peroxidase (Santa Cruz Biotechnology) for 1 h. Labeled protein bands were detected using an enhanced chemiluminescence system (Amersham Biosciences, Buckinghamshire, UK). Protein expression levels were analyzed with the ImageQuanT TL 1D gel analysis program (Amersham Biosciences).
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