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CAPTURE PURIFY ENRICH™ PhyNexus
Lee Hoang, Ph.D.
R&D Manager
PhyNexus, Inc. San Jose, CA
Automated, high throughput protein purification and sample prep using PhyTip® columns for therapeutics
leads screening and process development
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyNexus, Inc.
• PhyNexus applies analytical principles to biological problems. •The PhyNexus team offers validated, accurate, and rugged protein sample preparation technology. The PhyTip® column technology can be scaled as needed.
Greek for nature, natural, life or living
Latin for linking or connecting
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip® column design
Top screen
Bottom screen
Resin maintained in discrete area
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip® column design
5 20 10 20 40 80 160 320 mL 200 mL 600 mL
Traditional PhyTip Columns Gel Filtration PhyTip Columns
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip Columns
4x
Capture
Pro Pro
Pro Pro
Pro Pro
Pro
Pro
Pro
Target Protein Contaminants Buffer
Pro
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip Columns
4x
Purify
Pro Pro Pro Pro
Pro
Pro Pro
Pro
Pro
Target Protein Contaminants Wash Buffer
Pro
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip Columns
4x
Enrich
Pro Pro Pro
Pro
Pro Pro Pro
Pro
Pro
Target Protein Elution Buffer
Pro
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CAPTURE PURIFY ENRICH™ PhyNexus
Beckman FX
Caliper Sciclone & Zephyr
Perkin Elmer Minitrak
Tecan Freedom Evo Dynamic Devices Oasis
Hamilton STAR
PhyTip Columns – Compatible with Popular Liquid Handling Robots ®
Velocity 11 Bravo
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CAPTURE PURIFY ENRICH™ PhyNexus
Antibody Purification
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CAPTURE PURIFY ENRICH™ PhyNexus
Small volume, high throughput, automated mAb purification and analysis
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip columns are scale-able
• Linear relationship between resin bed volume and recovery
• Back-and-forth flow drives binding and elution to equilibrium • Measured dynamic binding capacity of 29 mg/mL is equivalent to manufacturer’s specifications • Resin performance is not compromised by miniaturization
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip columns for small volume purification
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CAPTURE PURIFY ENRICH™ PhyNexus
PhyTip columns for process development
24 conditions (capture, wash, elution) tested for each of 4 clones Yield measured by ELISA, activity by SPR
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CAPTURE PURIFY ENRICH™ PhyNexus
Antibody purifications: robust, high performance, reproducible
Sample Conc. mg/mL %Recovery %CV Sample
Conc. mg/mL %Recovery %CV Sample
Conc. mg/mL %Recovery %CV Sample
Conc. mg/mL %Recovery %CV
1 0.653 84 1 0.373 82 2 0.368 79 2 0.349 80 1 0.667 86 1 0.385 84 2 0.399 86 2 0.360 83 1 0.641 83 1 0.389 85 2 0.407 88 2 0.347 80 1 0.651 84 3% 1 0.387 85 4% 2 0.394 85 4% 2 0.367 84 7% 1 0.618 80 1 0.399 87 2 0.380 82 2 0.344 79 1 0.643 83 1 0.407 89 2 0.405 87 2 0.335 77 1 0.694 89 1 0.400 88 2 0.401 86 2 0.352 81 1 0.692 89 1 0.360 79 2 0.357 77 2 0.341 78 1 0.647 83 1 0.373 82 2 0.379 82 2 0.353 81 1 0.643 83 1 0.399 87 2 0.403 87 2 0.354 81 1 0.643 83 1 0.388 85 2 0.410 88 2 0.272 62 1 0.650 84 1 0.394 86 2 0.390 84 2 0.320 73 3 0.405 88 3 0.320 69 4 0.413 86 4 0.347 80 3 0.422 92 3 0.323 70 4 0.349 73 4 0.411 94 3 0.454 99 3 0.337 73 4 0.399 83 4 0.369 85 3 0.439 96 10% 3 0.325 70 4% 4 0.402 84 6% 4 0.390 90 5% 3 0.442 96 3 0.326 70 4 0.389 81 4 0.393 90 3 0.429 94 3 0.336 73 4 0.389 81 4 0.409 94 3 0.431 94 3 0.353 76 4 0.390 81 4 0.380 87 3 0.418 91 3 0.344 74 4 0.389 81 4 0.374 86 3 0.442 96 3 0.338 73 4 0.383 80 4 0.401 92 3 0.379 83 3 0.354 76 4 0.351 73 4 0.393 90 3 0.386 84 3 0.325 70 4 0.339 71 4 0.409 94 3 0.304 66 3 0.321 69 4 0.380 79 4 0.422 97
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CAPTURE PURIFY ENRICH™ PhyNexus
His-tagged Protein Purification
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CAPTURE PURIFY ENRICH™ PhyNexus
Courtesy Vertex Pharmaceuticals
• Magnetic Beads, Spin Columns and PhyTip Columns
• PhyTip columns outperform competition through yield and concentration
Ni-IMAC purification platform comparisons
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CAPTURE PURIFY ENRICH™ PhyNexus
Ni-NTA IMAC Resin Screening with PhyTip Columns
Target protein
• Screening commercially available resins to find high capacity and low background
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CAPTURE PURIFY ENRICH™ PhyNexus
Ni-NTA IMAC Resin Wash Optimization
• E.coli culture lysed and cleared • Spike with His-Rubredoxin, MW 7.5
kDa and purified on 20 µL IMAC PhyTip columns
• All 8 samples first wash in 5 mM imidazole
• Second wash in varying concentrations of imidazole
• Note from 30 mM imidazole the high MW contaminating band begins to be removed
• Stringent washing did not affect the concentration of eluted Rubredoxin
Contaminant
His-rubredoxin
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CAPTURE PURIFY ENRICH™ PhyNexus
Gel Filtration Chromatography
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CAPTURE PURIFY ENRICH™ PhyNexus
1 2 3 4 5 6 7
2 3 4 5 6 7
1
Gel Filtration Columns Protein recovery and salt removal
Tips from left: 1. 600 µL column 2. 200 µL sample load 3-6. 4x100 µL chaser 7. 400 µL chaser
Tubes from left: 1. Starting sample 2. 200 µL fraction 3-6. 100 µL fractions 7. 400 µL fraction
• Routinely obtain 80% protein recovery & remove >95% salt
• Separation of myoglobin (brown MW 16.7kD) from DNP-glutamate (yellow, MW 313D)
• Elution fractions collected in separate wells
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CAPTURE PURIFY ENRICH™ PhyNexus
IEX Chromatography
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CAPTURE PURIFY ENRICH™ PhyNexus
Ion Exchange Method Development
Cation exchange resin capture and release of lysozyme
Anion exchange release of BSA
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CAPTURE PURIFY ENRICH™ PhyNexus
Ion Exchange Scale-up
• 1mL PhyTip column containing 10 mL anion exchange media • 50 mM to 750 mM NaCl step gradient elution
• 5 mL FPLC anion exchange column • Shallow gradient combined with steps
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CAPTURE PURIFY ENRICH™ PhyNexus
Marc D. Wenger et al., “An automated microscale chromatographic purification of virus-like particles as a strategy for process development,” Biotechnol. Appl. Biochem, 2007.
Provide feedback on upstream process changes
Examples of Manufacturing and Q/C Monitoring: Merck
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CAPTURE PURIFY ENRICH™ PhyNexus
Merck Case Study: Comparison of lab-scale and PhyNexus-scale purification systems
Marc D. Wenger et al., “An automated microscale chromatographic purification of virus-like particles as a strategy for process development,” Biotechnol. Appl. Biochem, 2007.
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CAPTURE PURIFY ENRICH™ PhyNexus
Glycan Mapping
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CAPTURE PURIFY ENRICH™ PhyNexus
Challenge of Glycan Mapping
Problem • Small differences in size • Similar • No UV/Vis absorbance
Solution • Label with fluorescent dye • HPLC or CE separation
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CAPTURE PURIFY ENRICH™ PhyNexus
Glycan Labeling Strategy
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CAPTURE PURIFY ENRICH™ PhyNexus
Prater et al., “Automated sample preparation facilitated by the PhyNexus MEA purification system for oligosaccharide mapping of glycoproteins,” Analytical Biochemistry, (2007) 369(2), 202-9
Normal Phase Columns for enrichment of oligosaccharides from glycoproteins
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CAPTURE PURIFY ENRICH™ PhyNexus
Plasmid DNA Purification
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CAPTURE PURIFY ENRICH™ PhyNexus
Plasmid purification is difficult to automate
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CAPTURE PURIFY ENRICH™ PhyNexus
Solution: Process crude lysate
A B
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CAPTURE PURIFY ENRICH™ PhyNexus
Performance Data Sample Yield Conc A260/A280 A260/A230
1 18.5 201 1.97 2.12
2 19.4 208 1.98 2.02
3 18.5 204 1.95 1.97
4 16.5 188 1.97 2.12
5 17.7 195 1.95 2.00
6 19.1 206 1.94 1.96
7 19.5 206 1.96 1.96
8 19.5 209 1.95 1.90
0
100
200
300
400
500
Fugene 6 Fugene HD TransIT LT1
Transfection Efficiency 96 hours – Reverse Transfection
# of
GFP
pos
itive
cel
ls
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CAPTURE PURIFY ENRICH™ PhyNexus
Target Discovery & Validation
Drug Screening
& Lead Optimization
Development Clinical Trials Manufacturing
Selected Current Customers: Raven Biotechnologies, Cell Signaling Inc, Pfizer, Astra Zeneca, Domantis, Target Discovery, Sareum
• Protein Interaction IP, Co-IP • Pathway Activation ChIP Phosphoprotein enrichment • Target Expression and Purification Screening • Biomarker Discovery • Biomarker Validation
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CAPTURE PURIFY ENRICH™ PhyNexus
Target Discovery & Validation
Drug Screening
& Lead Optimization
Development Clinical Trials Manufacturing
• Library Synthesis • Library Screening and Selection • Assay Development Affinity tagged library screening • Lead Characterization Ab specificity, selectivity, affinity • Lead Optimization Affinity maturation • Structural Analysis Crystallization screening Selected Current Customers:
GSK, Merck, Amgen, Dyax, EMD, Wyeth, Genentech, CAT, Pfizer, Astra Zeneca
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CAPTURE PURIFY ENRICH™ PhyNexus
Target Discovery & Validation
Drug Screening
& Lead Optimization
Development Clinical Trials Manufacturing
• Process Development • Protein Analytics • Pre-Clinical Assays
Selected Current Customers: Merck, Genentech, Inhibitex, FoldRX, Lonza, EMD, Talecris
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CAPTURE PURIFY ENRICH™ PhyNexus
Target Discovery & Validation
Drug Screening
& Lead Optimization
Development Clinical Trials Manufacturing
• Immunogenicity
Selected Current Customers: Talecris
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CAPTURE PURIFY ENRICH™ PhyNexus
Target Discovery & Validation
Drug Screening
& Lead Optimization
Development Clinical Trials Manufacturing
Selected Current Customers: Merck
• Manufacturing monitor and Q/C
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CAPTURE PURIFY ENRICH™ PhyNexus
Conclusions
PhyTip columns • Miniaturization: Obtain information early in the process
• Maintain protein activity: Compatible with cell-based assays and screening
• Automation: Process 1 to 96 samples in as little as 30 minutes
• Flexible: Choose optimal column size and resin
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CAPTURE PURIFY ENRICH™ PhyNexus
Select Sub-set of Current Customers