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Innovations for a Secure and Healthy World. Core Technologies. Core technologies in multiple industries. Cheese & Dairy. Water & Beverages. 1999. 2006.
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Innovations for a Secure and Healthy World
Core Technologies Core technologies in multiple industries Cheese & Dairy Water & Beverages 1999 2006 GenPrime TechnologiesRapid Microbe Detection (Broad Patent Protection) Founded 1997 Fermentation Blood Products 2000 2005 Homeland Security 2002
Platelet Contamination Bacterial Contamination of Platelets is a Major Concern to the Medical Community AABB Standard 5.1.5.1 requires bacterial testing on every platelet unit (100% QC)
Industry Requirements Blood Banks & Hospitals Need Robust Bacterial Assay • Rapid • Sensitive • Cost-effective • User-friendly • Computer interface capability Of the current methods, the rapid assays are not sensitive and the sensitive assays are not rapid.
Current Methods Bacterial Detection in Platelets • Method Sensitivity • Staining/microscopy 106 cfu/ml • Dipsticks: pH & glucose 107 cfu/ml • Swirling 107 cfu/ml • O2 consumption: Pall eBDS <102 cfu/ml • CO2 generation: BacT/ALERT <102 cfu/ml Rapid (No Culture required) Slow (Culture required) Additional methods are under development
GenPrime's Approach GenPrime Expanded its Antibody Technology to Develop a Rapid Bacterial Test - BacSTAT • Broad-spectrum antibody-based lateral flow device for detection of bacteria in apheresis or whole blood derived platelets • Unique lateral-flow scanning system • Pass/Fail software system
GenPrime’s Technology Broad-Spectrum Antibody Detection of Bacteria Unique Bar Code Control Line (pos) A single lateral-flow antibody strip detects all 14 contaminating organisms. (neg)
Platelet Bacteria Target Organisms Target Sensitivity S. epidermidis S. aureus B. cereus B. subtilis Ps. aeruginosa Streptococcus viridans/mitis Streptococcus pyogenes E. coli Klebsiella oxytoca Serratia marcescens Enterobacter cloacae Corynebacterium xerosis Propionibacterium acnes Clostridium perfringens 103 cfu/ml
Bacterial Detection Preliminary Data with BacSTAT Current sensitivity for detection of E. coli in platelets is 104 cfu/ml. 107 106 105 104 103
Assay Method The Assay is Simple and Rapid Total Test Time is Less Than 20 Minutes Run Lateral-Flow Strip 1 ml Platelet Sample Scan and Log Data Sample Prep (< 1 min) (3 min) (15 min) (< I min) Multiple tests can be carried out simultaneously.
BacStat BacSTAT Detects Bacteria with Objective Results Rapid Lateral-Flow Scanner The BacSTAT employs pass/fail threshold software to determine if platelets are contaminated. Antibody Strips
Validation for FDA Validation Plan for BacSTAT as QC Indication • Sensitivity • Spiking studies in platelets • Test all 14 bacteria (aerobic and anaerobic) • Evaluate 10 samples for each concentration (10/10 = detection limit) • Compare to Predicate Device • Spike platelets at 1 cfu/ml and collect samples at 24 hour intervals • Test each sample with BacSTAT, plate count and either BacT/ALERT or eBDS • Potential issues: Low spiking level and some bacteria may not grow in platelets
Conclusion BacSTAT is a robust bacterial detection test for the QC of whole blood and apheresis platelets prior to transfusion. • Simple - Dipstick format • Rapid - Total time less than 20 minutes • Sensitive - 103 cfu/ml • Automated Data Tracking
Jim Fleming Chief Technology Officer jfleming@genprime.com 866-624-9855