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4 protocols using basic fibroblast growth factor (bfgf)

1

Glioblastoma Spheroid Culture

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Briefly, gliomaspheres were generated as previously described [[42] (link), [43] (link), [44] (link)]. U-87 MG and A172 human GBM cells were cultured in serum-free DMEM supplemented with 2% B27 (Gibco by Life Technologies, cat. 12587010), 20 ng/ml epidermal growth factor (EGF) (Sigma-Aldrich, cat. H9644) and 20 ng/ml basic fibroblast growth factor (bFGF) (Gold Biotechnology, cat. 1140-02-100) and maintained at 37 °C in a 95% air, 5% CO2 atmosphere. After 24 h, floating cells were re-seeded in a new 60 mm culture plate, in supplemented serum-free medium and the medium was changed every 2 days. Floating aggregates, known as gliomaspheres were formed within 3–5 days after seeding. For morphological examination, pictures were taken with a Nikon TMS inverted microscope.
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2

Culturing Mammosphere-Forming Cells

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TAZDEP or TAZIND cells were grown in serum-free DMEM/F12 10 ng/ml recombinant human basic fibroblast growth factor (bFGF; Gold Biotechnology, MO) 1:1 media (Gibco, NY) supplemented with EGF (20 ng/mL) and B27 (2%) in ultra-low attachment six-well plates (Corning). The mammospheres were allowed to grow for 5 days. Total mammospheres greater than 100 μm in diameter were counted under a microscope. Each experimental group was performed in triplicate.
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3

Subcutaneous Islet Transplantation in Diabetic Rats

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Diabetes was rendered in recipient rats by a single intravenous injection of streptozotocin (STZ, 60 mg/kg, Sigma-Aldrich). Diabetes was confirmed by measuring blood glucose levels >400 mg/dl in two consecutive measurements. A prevascularized SC graft bed was prepared by implanting an agarose-basic fibroblast growth factor (bFGF) disc, as described [22 , 54 (link)]. Briefly, a lyophilized agarose disc made from 4.5% agarose solution (Sigma-Aldrich) with bFGF solution [500 μg/ml bFGF (Gold Biotechnology, St. Louis, MO) in saline] and heparin sodium solution [250 μg/ml (Sigma-Aldrich)] was implanted in the dorsal SC site of recipient rats. A week after implantation, a prevascularized capsule had formed around the disc, and the disc was removed through a small opening made on the capsule. Freshly isolated islets were used for SC transplantation. Islets loaded either on an O2 transporter (n=4) or Neg-CTL device (n=4) were transplanted into the space inside of the prevascularized capsule. The capsule opening and skin wound were separately sutured to close, except for the cannula portion of the device penetrating through the opening. These surgical procedures were performed under general anesthesia.
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4

Glioma Cell Lines and Glioma Stem Cells

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The human glioma cell lines, LN229 and A172, were obtained from ATCC (Manassas, VA). U251HF glioma cells were kindly provided by Dr. W. K. Alfred Yung (M. D. Anderson Cancer Center, Houston, TX); U251HF-Luc were generated by stably transfecting a firefly luciferase gene under a CMV promoter into U251HF cells and maintained as described with the addition of Geneticin (G418–800μg/ml) for U251HF-Luc cells (23 (link)). GSC2, GSC20, GSC11, GSC23 and GSC811 patient-derived glioma stem cell lines (24 (link)) were kindly provided by Dr. Frederick Lang (M. D. Anderson Cancer Center, Houston, TX) and cultured as neurospheres passaged every 5–7 days in serum-free DMEM/F12 medium containing B-27 Supplement (Life Technologies, Carlsbad, CA), bFGF (FGF2 Gold BioTechnology, St. Luis, MO) and EGF (Gold Bio Technology). Cell lines were authenticated at the University of Arizona Genetics Core (http://uagc.arl.arizona.edu/services/cell-line-authentication-human). Onalespib (AT13387) was purchased from Medkoo Biosciences (Morrisville, NC).
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