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13 protocols using ggti 2133

1

Antibody Characterization in Cell Lines

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GGTI-2133, FTI-277, and zaragozic acid were purchased from Sigma. Antibodies (Abs) used in this study were: anti-β-tubulin III (Tuj-1, Covance, MMS-435P), anti-sarcomeric α-actinin (Abcam, ab9465), anti-GAPDH (Millipore, MAB374), anti-synaptophysin (Invitrogen, 18–0130), anti-NF68 (Sigma, N5139), anti-Lamin B1 (Abcam, ab16048) and anti-MYC (Santa Cruz, sc-40). All antibodies were used in 1:1000 dilution.
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2

Inhibition of Geranylgeranylation in Cells

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Brefeldin A and GGTI-2133 were obtained from Sigma-Aldrich (St Louis, MO, USA). Professor David Wiemer at the University of Iowa kindly provided the GGDPSi VSW1198 [8 (link)] and RAM2061 [10 (link)], as well as the GGTase II inhibitor NHB2005 [31 (link)].
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3

Inhibition of Geranylgeranylation in Cells

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Brefeldin A and GGTI-2133 were obtained from Sigma-Aldrich (St Louis, MO, USA). Professor David Wiemer at the University of Iowa kindly provided the GGDPSi VSW1198 [8 (link)] and RAM2061 [10 (link)], as well as the GGTase II inhibitor NHB2005 [31 (link)].
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4

Geranylgeranyl Transferase-I Inhibitor Assay

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GGTase-I was obtained from Jena Bioscience (Jena, Germany) and D*-GCVLL (dansyl gly-cys-val-leu-leu) from Calbiochem (Darmstadt, Germany). Ammonium hydroxide solution 28–30% was purchased from Alfa Aesar (Karlsruhe, Germany), the phosphatase inhibitors Halt® and Phosstop® from Thermo-Fisher/Piercenet (Bonn, Germany) and Roche Diagnostics GmbH (Mannheim, Germany) and the GGTase-I inhibitor GGTI-2133 from Sigma Aldrich (Schnelldorf, Germany). All solvents were of analytical grade or higher quality. Acetonitrile was obtained from Carl Roth GmbH (Karlsruhe, Germany), 1-butanol, n-hexane, 2-propanol, methanol, acetone, ammonium acetate and assay buffer compounds: Tris–HCl, MgCl2, ZnCl2 and Na2CO3 were obtained from Merck (Darmstadt, Germany). GGPP, octyl- -Dglucopyranoside and dithiothreitol were from Sigma-Aldrich (Schnelldorf, Germany). Millipore water was used for all solutions (Schwalbach, Germany).
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5

Compound Preparation for Experimental Studies

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Pitavastatin (Livalo, Adooq), zoledronic acid and risedronate (Selleck), and GGTI-2133, Tipifarnib, farnesol, geranylgeraniol and mevalonate (Sigma-Aldrich) were prepared as 20 mM solutions in DMSO except zoledronic acid which was dissolved in H2O.
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6

Pharmacological Interventions in Cell Modeling

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The drugs employed in this study were FTI-277, Pravastatin, Zoledronic acid, Rapamycin, Insulin-like growth factor 1, N-acetyl-l-cysteine and GGTI-2133 and were all obtained from Sigma Aldrich, UK. Drugs were added to the media and incubated for fixed periods of time. The final concentration and duration of drug treatments were: FTI-277—2.5 µM for 48 h (Mehta et al. 2011 (link)), Pravastatin—1 µM for 24 h (Varela et al. 2008 (link)), Zoledronic acid—1 µM for 24 h, Rapamycin—10 nM for 24 h (Cao et al. 2011b ), Insulin-like growth factor 1—50.0 ng/mL for 24 h (Mariño et al. 2010 (link)), N-acetyl-l-cysteine—20 µM for 1 h (Richards et al. 2011 (link)), FTI-277 and GGTI-2133—both 2.5 µM for 48 h) (Mehta et al. 2011 (link); Kieran et al. 2007 (link)), Pravastatin and Zoledronic acid—both 1 µM for 24 h (Varela et al. 2008 (link)) and FTI-277—2.5 µM for 48 h, Pravastatin and Zoledronic acid—both 1 µM for 24 h.
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7

Investigating Chemokine-mediated Cell Signaling

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Recombinant human CXCL1 (275-GR-010, R&D Systems), recombinant human CXCL2 (276-GB-010, R&D Systems), recombinant human CXCL8 (208-IL-010, R&D Systems), recombinant mouse Ccl2 (479-JE-010, R&D Systems), recombinant mouse Ccl7 (456-MC-010, R&D Systems), GGTI-2133 (G5294, Sigma-Aldrich), FTI-277 (F9803, Sigma-Aldrich), YM-53601 (18113, Cayman Chemical), simvastatin (S1792, Selleckchem), and human cholesterol (C8667, Sigma-Aldrich).
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8

Signaling Pathways Modulation Assay

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EGCG, luteolin, GGTI-2133, and TGF-β recombinant protein were obtained from Sigma Aldrich. Other materials include U0126 (Calbiochem) and LY294002 (Enzo Life Sciences, Inc.).
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9

Synthesis and Characterization of GGTI Inhibitors

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GGTI-2133 was obtained from Sigma-Aldrich (St Louis, MO, USA). NHB2005 and RAM2061 were kindly provided by Dr. David Wiemer at the University of Iowa (Coxon et al., 2014 (link); Matthiesen et al., 2018 (link)). Compound purity was determined as ≥95% by high-performance liquid chromatography and verified by nuclear magnetic resonance (Matthiesen et al., 2018 (link)). Structures of the compounds used in this study can be found in Supplemental Fig 1.
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10

Regulating Cholesterol Metabolism and Cell Cycle

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The reagents used and working concentrations were as follows: Nutlin-3 (10 μM, Sigma-Aldrich, catalog #N6287), LG100268 (Sigma-Aldrich, catalog #SML0279), T0901317 (Sigma-Aldrich, catalog #T2320), 25-hydroxycholesterol (1 μg/ml, Santa Cruz Biotechnology, catalog #sc-214091), N-Acetyl-Leucyl-Leucyl-norleucinal (ALLN, 100 μM, Sigma-Aldrich, catalog #A6185), Simvastatin (10 μM, Sigma-Aldrich, catalog #S6196), mevalonic acid 5-phosphate (1 mM, Sigma-Aldrich, catalog #79849), geranylgeranyl pyrophosphate (10 μM, Sigma-Aldrich, catalog #G6025), GGTI-2133 (20 μM, Sigma-Aldrich, catalog #G5294), Palbociclib (500 nM, Selleck Chemicals, catalog #S1116) and Roscovitine (10 μM, Selleck Chemicals, catalog #S1153).
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