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talk at ACS in 2010 on data intensive drug design - focus on Tuberculosis.
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Acs talk data intensive drug design v2
1.
Collaborative Database and
Computational Models For Tuberculosis Drug Discovery Decision Making Sean Ekins 1,2,3,4, Justin Bradford 1, Krishna Dole 1, Anna Spektor 1, Kellan Gregory 1, David Blondeau 1, Moses Hohman 1 and Barry A. Bunin 1 1 Collaborative Drug Discovery, Burlingame, CA. 2 Collaborations in Chemistry, Jenkintown, PA. 3 School of Pharmacy, Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD. 4 Department of Pharmacology, University of Medicine & Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, NJ. © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
2.
MASSIVE datasets =
Information overload http://thecprogrammer.com/ Merriam Webster online http://exitcreative.net/blog/2010/03/data-overload-economist/ Main Entry: mas·sive Pronunciation: ˈma-siv Function: adjective Etymology: Middle English massiffe, from Anglo-French mascif, alteration of massiz, from Vulgar Latin *massicius, from Latin massa mass Date: 15th century 1 : forming or consisting of a large mass: a : bulky b : weighty, heavy <massive walls> <a massive volume> c : impressively large or ponderous d : having no regular form but not necessarily lacking crystalline structure <massive sandstone> 2 a : large, solid, or heavy in structure <massive jaw> b : large in scope or degree <the feeling of frustration, of being ineffectual, is massive — David Halberstam> c (1) : large in comparison to what is typical <a massive dose of penicillin>Archive, Mine, Collaborate © 2009 Collaborative Drug Discovery, Inc. (2) : being extensive and
3.
The future: crowdsourced
drug discovery Williams et al., Drug Discovery World, Winter 2009 © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
4.
Typical Lab:
The Data Explosion Problem & Collaborations DDT Feb 2009 © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
5.
www.collaborativedrug.com © 2009 Collaborative
Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
6.
CDD Platform
• CDD Vault – Secure web-based place for private data – private by default • CDD Collaborate – Selectively share subsets of data • CDD Public –public data sets - Over 3 Million compounds, with molecular properties, similarity and substructure searching, data plotting etc • will host datasets from companies, foundations etc • vendor libraries (Asinex, TimTec, Chembridge) • Unique to CDD – simultaneously query your private data, collaborators’ data, & public data, Easy GUI © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
7.
CDD TB Project
•Funded by Bill & Melinda Gates Foundation for 2 years Nov 2008- Oct 2010 •Provide CDD software to Pilot groups and train them to use to store data •Provide custom cheminformatics support to pilot groups •Accelerate the discovery of new therapies and Advance clinical candidates through pipeline •Capture TB Literature and make accessible •CDD TB is freely available to any groups doing TB research (minimal support from CDD) •Integrate academic, non-profit, and corporate laboratories distributed across the globe © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
8.
Building a disease
community for TB • Tuberculosis Kills 1.6-1.7m/yr (~1 every 8 seconds) • 1/3rd of worlds population infected!!!! • Multi drug resistance in 4.3% of cases and extensively drug resistant have increasing incidence • No new drugs in over 40 yrs • Drug-drug interactions and Co-morbidity with HIV • Collaboration between groups is rare • These groups may work on existing or new targets • Use of computational methods with TB is rare • Literature TB data is not well collated (SAR) • Pub #17, Aug 23, 1.30-5.05pm Room 208 © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
9.
15
public datasets for TB >300,000 cpds Patents, Papers Annotated by CDD http://www.collaborativedrug. com/register © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
10.
Data in CDD ©
2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
11.
Visualizing in CDD ©
2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
12.
Visualizing in CDD ©
2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
13.
Molecule data in
CDD © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
14.
Learning from TB
screening data: MLSMR PCA PCA analysis - MLSMR dose response (blue, N = 2273) and known Mtb drugs (yellow) with simple descriptors. IV dosed Mtb drugs cluster (top right). 83.6% of the variance is explained using 9 descriptors in Discovery Studio © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Ekins et al., Mol BioSyst, 6: 840-851, 2010 Archive, Mine, Collaborate
15.
Bayesian Classification Screen
Laplacian-corrected Bayesian classifier models were generated using FCFP-6 and simple descriptors. 2 models 220K and 2K compounds active compounds with MIC < 5uM Good G1: 1704324327 G2: -2092491099 G3: -1230843627 G4: 940811929 G5: 563485513 73 out of 165 good 57 out of 120 good 75 out of 188 good 35 out of 65 good 123 out of 357 good Bayesian Score: 2.885 Bayes ian Score: 2.873 Bayesian Score: 2.811 Bayesian Score: 2.780 Bayesian Score: 2.769 Bad B1: 1444982751 B2: 274564616 B3: -1775057221 B4: 48625803 B5: 899570811 0 out of 1158 good 0 out of 1024 good 0 out of 982 good 0 out of 740 good 0 out of 738 good Bayesian Score: -3.135 Bayesian Score: -3.018 Bayesian Score: -2.978 Bayesian Score: -2.712 Bayesian Score: -2.709 © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Ekins et al., Mol BioSyst, 6: Archive, Mine,2010 840-851, Collaborate
16.
Bayesian Classification Dose
response Good Bad © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Ekins et al., Mol BioSyst, 6: Archive, Mine,2010 840-851, Collaborate
17.
Bayesian Classification
Leave out 50% x 100 Dateset Internal (number of External ROC molecules) ROC Score Score Concordance Specificity Sensitivity MLSMR All single point screen (N = 220463) 0.86 ± 0 0.86 ± 0 78.56 ± 1.86 78.59 ± 1.94 77.13 ± 2.26 MLSMR dose response set (N = 2273) 0.73 ± 0.01 0.75 ± 0.01 66.85 ± 4.06 67.21 ± 7.05 65.47 ± 7.96 © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Ekins et al., Mol BioSyst, 6: 840-851, 2010 Archive, Mine, Collaborate
18.
Bayesian Classification –
test set Both Bayesian models were evaluated with two separate test sets (NIAID and GVKbio) to describe how they ranked the most active molecules in each database. 60 single point screening % compounds active 50 Best model, 40 30 dose response screening NIAID 20 Random model 10 0 0 5 10 15 20 25 30 % compounds tested 100 GVKbio 90 80 Best % compounds active 70 60 single point screening 50 model, 40 30 20 Random dose response screening 10 0 model 0 5 10 15 20 25 30 35 % compounds tested © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Ekins et al., Mol BioSyst, 6: Archive, Mine,2010 840-851, Collaborate
19.
Filtering a further
100K compound library Number of Random hit rate single point screening dose response compounds (%) (200k) Bayesian Bayesian screened model (%) model (%) 0 0 0 0 100 1.66 (0.10) 23 (1.35) 24 (1.41) 200 3.32 (0.19) 48 (2.82) 42 (2.47) 300 4.98 (0.29) 64 (3.76) 54 (3.17) 400 6.63 (0.39) 77 (4.52) 58 (3.41) 500 8.29 (0.49) 92 (5.41) 70 (4.11) 600 9.95 (0.58) 107 (6.29) 82 (4.82) >10 fold Enrichment with TB Bayesian model © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Ekins et al., Mol BioSyst, In Press Archive, Mine, Collaborate
20.
Hits in the
top 100 of the 100,000 compound test set Ekins et al., Mol BioSyst, In Press © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
21.
Simple descriptors
Atom Dataset MWT logP HBD HBA RO 5 count PSA RBN MLSMR Active ≥ 90% inhibition at 10uM 357.10 3.58 1.16 4.89 0.20 42.99 83.46 4.85 (N = 4096) (84.70) (1.39) (0.93) (1.94) (0.48) (12.70) (34.31) (2.43) Inactive < 90% inhibition at 10uM 350.15 2.82 1.14 4.86 0.09 43.38 85.06 4.91 (N = 216367) (77.98)** (1.44)** (0.88) (1.77) (0.31)** (10.73) (32.08)* (2.35) TAACF- NIAID CB2 Active ≥ 90% inhibition at 10uM 349.58 4.04 0.98 4.18 0.19 41.88 70.28 4.76 (N =1702) (63.82) (1.02) (0.84) (1.66) (0.40) (9.44) (29.55) (1.99) Inactive < 90% inhibition at 10uM 352.59 3.38 1.11 4.24 0.12 42.43 77.75 4.72 (N =100,931) (70.87) (1.36)** (0.82)** (1.58) (0.34)** (8.94)* (30.17)** (1.99) © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
22.
Pharmacophores for TB
drugs KEGG © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
23.
Pharmacophores for TB
drugs We generated common features pharmacophores (Discovery Studio, Accelrys) based on the five current first line Mtb agents (rifampicin, ethambutol, streptomycin) Searched 3D databases of TB screening sets etc.. NIAID (3748), GVKBio (2880) and MLSMR dose response data (2273) Could this help us suggest mechanism / targets for whole cell screening data ? Ekins et al., Mol BioSyst, 6: 840-851, 2010 © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
24.
Pharmacophores for TB
drugs Pharmacophore NIAID NIAID actives GVKbio GVKbio MLSMR MLSMR compounds retrieved MIC compounds actives dose dose retrieved (% µ < 5µM (% of retrieved (% retrieved MIC < response response of dataset) total actives) of dataset) µ 5µM (% of total data actives actives) compounds retrieved retrieved (% µ IC50< 5µM (% of dataset) of total actives) Rifampicin 0 0 0 0 0 0 Rifampicin 3 (0.08) 3 (0.16) 1 (0.03) 1 (0.26) 0 0 (no shape) Ethambutol 1 (0.03) 1 * (0.05) 1 (0.03) 0 1 (0.04) 1 * (0.13) Ethambutol 19 (0.51) 13 (0.69) 8 (0.28) 0 2 (0.09) 2 (0.27)* (no shape) Streptomycin 10 (0.27) 9 * (0.48) 4 (0.14) 1 * (0.26) 0 0 * Recovered compound used in pharmacophore Ekins et al., Mol BioSyst, 6: 840-851, 2010 © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
25.
Pharmacophores for TB
drugs We created Catalyst databases with the Kyoto Encyclopedia of Genes and Genomes (KEGG, N = 11,286), Human metabolome database (N = 2,899) and LipidMaps (N = 10,220). Pharmacophore KEGG hits LipidMaps HMDB hits US Drugs Microsource database hits database hits Rifampicin 0 0 0 0 Rifampicin 61 1 14 5 (5 antibacterials) (no shape) Ethambutol 1* 0 0 1* Ethambutol 9* 2 0 5 * (2 antibacterials) (no shape) Streptomycin 203* 247 86 11 * (4 antibacterials) * Recovered compound used in pharmacophore See poster on TB molecular mimics Freundlich et al., Pub # 258 Tues Aug 24 – 5.30-7.30pm Hall C Ekins et al., Mol BioSyst, 6: 840-851, 2010 © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
26.
Large datasets in
Pharma How could we make ADME or Tox models from pharmas available for neglected disease researchers? Need open technologies so models can be shared What can be developed with very large training and test sets? HLM training 50,000 testing 25,000 molecules training 194,000 and testing 39,000 MDCK training 25,000 testing 25,000 MDR training 25,000 testing 18,400 Open molecular descriptors – Pfizer work (Gupta et al., Pub # 405, Wed 7-9pm Ballroom) Rishi R. Gupta, Eric M. Gifford, Ted Liston, Chris L.Waller, Moses Hohman, Barry A. Bunin and Sean Ekins, Drug Metab Dispos, In Press 2010 © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
27.
Human liver microsomal
stability HLM training 50,000 testing 25,000 molecules SVM RP Forest Uni RP Forest C5.0 Class CDK descriptors Kappa = 0.14 Kappa = 0.16 Kappa = 0.11 Kappa = 0.39 Sensitivity = 0.11 Sensitivity = 0.54 Sensitivity = 0.85 Sensitivity = 0.54 Specificity = 0.96 Specificity = 0.70 Specificity = 0.33 Specificity = 0.91 PPV = 0.43 PPV = 0.33 PPV = 0.25 PPV = 0.61 MOE2D and Not evaluated Not evaluated Not evaluated Kappa = 0.43 SMARTS Keys Sensitivity = 0.58 Specificity = 0.91 PPV = 0.63 (Baseline) CDK and SMARTS Not evaluated Not evaluated Not evaluated Kappa = 0.43 Keys Sensitivity = 0.58 Specificity = 0.91 PPV = 0.63 (Gupta et al., Pub # 405, Wed 7-9pm Ballroom) © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
28.
Massive Human liver
microsomal stability model HLM Model with CDK and HLM Model with MOE2D and SMARTS Keys: SMARTS Keys PCA of training (red) and test (blue) •# Descriptors: 578 Descriptors •# Descriptors: 818 Descriptors compounds •# Training Set compounds: •# Training Set compounds: 193,650 193,930 •Cross Validation Results: •Cross Validation Results: 38,730 compounds 38,786 compounds •Training R2: 0.79 •Training R2: 0.77 •20% Test Set R2: 0.69 •20% Test Set R2: 0.69 Blind Data Set (2310 Blind Data Set (2310 compounds): compounds): •R2 = 0.53 •R2 = 0.53 •RMSE = 0.367 •RMSE = 0.367 Continuous Categorical: Continuous Categorical: •κ = 0.40 •κ = 0.42 •Sensitivity = 0.16 •Sensitivity = 0.24 •Specificity = 0.99 •Specificity = 0.987 •PPV = 0.80 •PPV = 0.823 Time (sec/compound): 0.252 Time (sec/compound): 0.303 Overlap in Chemistry space (Gupta et al., Pub # 405, Wed 7-9pm Ballroom) © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
29.
RRCK Permeability and
MDR C5.0 RRCK C5.0 MDR MDCK training 25,000 testing Permeability 25,000 CDK descriptors Kappa = 0.47 Kappa = 0.62 Sensitivity = 0.59 Sensitivity = 0.85 Specificity = 0.93 Specificity = 0.77 MDR training 25,000 testing PPV = 0.67 PPV = 0.83 18,400 MOE2D and Kappa = 0.53 Kappa = 0.67 SMARTS Keys Sensitivity = 0.64 Sensitivity = 0.86 Specificity = 0.94 Specificity = 0.80 PPV = 0.72 PPV = 0.85 (Baseline) (Baseline) CDK and SMARTS Kappa = 0.50 Kappa = 0.65 Keys Sensitivity = 0.62 Sensitivity = 0.86 Specificity = 0.94 Specificity = 0.78 PPV = 0.68 PPV = 0.84 Open descriptors results almost identical to commercial descriptors Across many datasets and quantitative and qualitative data Provides confidence that open models could be viable Rishi R. Gupta, Eric M. Gifford, Ted Liston, Chris L.Waller, Moses Hohman, Barry A. Bunin and © 2009 Collaborative Drug Discovery, Inc. Sean Ekins, Drug Metab Dispos, In Press 2010 Archive, Mine, Collaborate
30.
The next opportunity
for crowdsourcing… • Open source software for molecular descriptors and algorithms • Spend only a fraction of the money on QSAR • Selectively share your models with collaborators and control access • Have someone else host the models / predictions Current investments >$1M/yr >$10-100’s M/yr Inside company Collaborators © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
31.
Acknowledgments
Antony Williams (RSC) Joel Freundlich, (Texas A&M) Gyanu Lamichhane, Bill Bishai (Johns Hopkins) Jeremy Yang (UNM) Nicko Goncharoff (SureChem) Chris Lipinski Takushi Kaneko (TB Alliance) Bob Reynolds (SRI) Chris Waller, Eric Gifford, Ted Liston, Rishi Gupta (Pfizer) Carolyn Talcott and Malabika Sarker (SRI International) Accelrys, ChemAxon Bill and Melinda Gates Foundation ekinssean@yahoo.com ; sekins@collaborativedrug.com © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate
32.
CDD publishes and
shares our scientific knowledge Rishi R. Gupta, Gifford, EM, Liston T, Waller CL, Hohman M, Bunin BA and Ekins S, Using open source computational tools for predicting human metabolic stability and additional ADME/Tox properties, Drug Metab Dispos, In Press 2010. Ekins S and Williams EJ, When Pharmaceutical Companies Publish Large Datasets: An Abundance of riches or fool’s gold, Drug Disc Today, In Press 2010. Ekins S, Gupta R, Gifford E, Bunin BA, Waller CL, Chemical Space: missing pieces in cheminformatics, Pharm Res, In Press 2010. Ekins S. and Williams AJ, Reaching out to collaborators: crowdsourcing for pharmaceutical research, Pharm Res, 27: 393-395, 2010. Ekins S and Williams AJ, Precompetitive Preclinical ADME/Tox Data: Set It Free on The Web to Facilitate Computational Model Building to Assist Drug Development. Lab On A Chip, 10: 13-22, 2010. Ekins S, Bradford J, Dole K, Spektor A, Gregory K, Blondeau D, Hohman M and Bunin BA, A Collaborative Database and Computational Models for Tuberculosis Drug Discovery, Mol BioSyst, 6: 840-851, 2010. Williams AJ, Tkachenko V, Lipinski C, Tropsha A and Ekins S, Free online resources enabling crowdsourced drug discovery, Drug Discovery World, Winter 2009. Louise-May S, Bunin B and Ekins S, Towards integrated web-based tools in drug discovery, Touch Briefings - Drug Discovery, 6: 17-21, 2009. Hohman M, Gregory K, Chibale K, Smith PJ, Ekins S and Bunin B, Novel web-based tools combining chemistry informatics, biology and social networks for drug discovery, Drug Disc Today, 14: 261-270, © 2009 Collaborative Drug Discovery, Inc. Archive, Mine, Collaborate 2009.
33.
CDD is Secure
& Simple • Web based database (log in securely into your account from any computer using any common browser – Firefox, IE, Safari) • Hosted on remote server (lower cost) dual-Xeon, 4GB RAM server with a RAID-5 SCSI hard drive array with one online spare • Highly secure, all traffic encrypted, server in a secure professionally hosted environment • Automatically backed up nightly • MySQL database • Uses JChemBase software with Rails via a Ruby-Java bridge, (structure searching and inserting/ modifying structures) • Marvin applet for structure editing • Export all data to Excel with SMILES, SDF, SAR, & png images © 2009 Collaborative Drug Discovery, Inc. www.collaborativedrug.com Archive, Mine, Collaborate
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