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Igfbp4

Manufactured by Abcam
Sourced in United Kingdom

IGFBP4 is a laboratory reagent used for research purposes. It is a member of the insulin-like growth factor binding protein (IGFBP) family, which plays a role in regulating the bioavailability and activity of insulin-like growth factors. The core function of IGFBP4 is to bind and modulate the effects of insulin-like growth factors.

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2 protocols using igfbp4

1

Quantitative Protein Analysis in CSF

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For each CSF sample, protein concentrations were measured with the bicinchoninic acid (BCA) assay (Bio-Rad Laboratories Srl, MI, IT). The protein content of the samples ranged from 0.25 μg/μl to 1.25 μg/μl, and 20 μg of each sample were loaded on 4-12% NuPAGE Bis-Tris gradient mini gels (Life Technologies, Grand Island, NY).
Protein electroblotting was performed following standard procedures, using antibodies for IGSF8, ITIH4, PCOLCE, FGA, FGG, GFRalpha2 and COL18A1 from Sigma-Aldrich Ltd (The Old Brickyard, New Road, Gillingham, Dorset SP8 4XT); for COL1A2, HRG, IGFBP4, MGP, NPDC1 and ribonuclease A from Abcam 330 (Cambridge Science Park, Cambridge CB4 0FL, UK); for selenoprotein P from Santa Cruz (10410 Finnell Street Dallas, Texas 75220 USA). WB bands were quantified with Quantity One software (Bio-Rad, USA) in terms of density (total intensity/area of volume).
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2

Signaling Pathway Modulation Assay

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Tumor necrosis factor alpha (TNF-α) was purchased from Research Diagnostics Inc. (Flanders, NJ). Interleukin 1- β (IL1-β), interleukin- 6 (IL-6), IL-6 soluble receptor and EX 527 were purchased from R&D Systems (Minneapolis, MN). Antibodies against total and phosphorylated extracellular-regulated protein kinase (ERK) 1/2, c-Jun NH2-terminal kinase (JNK), p38 mitogen-activated kinase, nuclear factor κB (NFκB) [including inhibitory κB (IκB) α and β], phospho-Hsp27, and IGFBP-4 were purchased from Abcam (Cambridge, MA). Antibodies against total and phosphorylated AKT were purchased from Novus Biologicals (Littleton, CO). SB203580, SP600125, rolipram and splitomycin were purchased from Enzo Life Sciences (Farmingdale, NY). Bay 11-7082 was purchased from Calbiochem (San Diego, CA). Resveratrol was purchased from Sigma-Aldrich (St Louis, MO). Reagents for SDS-PAGE, mini-gels and blocking buffer were purchased from Bio-Rad Laboratories (Richmond, CA) and tissue culture supplements and fetal bovine serum were purchased from Life Technologies (Grand Island, NY). A769662 was purchased from Santa Cruz Biotechnology (Dallas, TX).
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