External ID: TELO_02

Protocol: HCT116 colorectal cancer cells are infected with Ad-hTR-mut and cytotoxicity is assessed 5-days post infection, measured by standard MTT assay. Ad-hTR-mut constructed using the Adeasy system (Agilent) and purified and quantified using Adeno-x purification and rapid titre kits (Clontech). Cells are seeded at 10000 cells per well and infected with 500pfu/cell in 96 well plates (Costar) then incubated for 48h prior to addition of compounds. Compounds were screened at 10uM in duplicate 2 days post-infection and MTT assay performed 3 days later at 5 days post-infection. A negative control adenovirus was included on every plate as a control for non-specific viral toxicity and all wells were expressed relative to untreated cells. Absorbance at 570nm was determined using a Molecular Devices spectramax plus instrument and analysed using SoftMax Pro software. Hits were taken to be compounds giving greater than 2.5-fold increase in absorbance indicating increased cell survival.

Comment: Target cell viability at time of assay was 30-50% after infection with this stock of Ad-hTR-mut. Compounds giving 2.5-fold increase in survival relative to this condition were taken to be hits.

External ID: KUHTS-Muma KU-CaM-Htt INH-01

Protocol: 1; Dispense 45 nl compounds (10 mM stocks) using ECHO 555 to Alpha 384 well assay plates. Dispense 45 nl DMSO to control columns 1 and 2 of 384 well plates.
2; Incubate 5 ul of 6XHis-mHTT (Final, 13 nM) with the compounds for 40 mins at room temperature in buffer containing 10 mM Tris.HCl pH 7.4, 1 mM calcium chloride, 150 mM sodium chloride, 0.1% BSA and 20% glycerol.
3; Dispense 5 ul of 6XGST-CaM (Final 13 nM) in buffer A.
4; Incubation; 1 hour (dark at 25C)
5; Dispense 20 ul of Nickel chelate acceptor beads (Final, 20 ugs/ml) and Glutathione donor beads (Final, 30 ugs/ml). Incubate for 2h, room temperature.
6; Detector: Perkin Elmer Enspire, Alphascreen Module (Excitation 680nm/Emission 570nm).

NOTES (numbers refer to Sequence numbers above)
1. Alphascreen bead incubations were performed in green light, TiterTek setting 400rpm.
2. All incubation and addition steps were followed by mixing and centrifugation at 400g,1 min.
3. The percent inhibition for each compound was calculated as follows:
100- [100 *((Test Compound-Median Low Control) / (Median High Control - Median Low Control))]

Where:
Test_Compound is defined as wells containing His mHTT + GST CaM in the presence of test compound

High_Control is defined as wells containing His mHTT + GST CaM and DMSO.

Low_Control is defined as wells containing His mHTT and DMSO.

Comment: All percent inhibition data reported were normalized to high and low controls on a per-plate basis. The results of primary screening data include compounds contributing to assay signal interference, interference with tags binding to Alpha beads, chelators, process related artifacts etc.. The actives were defined as compounds that inhibited Alphascreen reads to greater than 50%.