A Flow-Through Ultrasonic Lysis System for the Disruption of Bacterial Spores
An automated, flow-through spore lysis instrument that is capable of rapidly disrupting bacterial spores is described. The system utilizes a flow-through chamber that allows for direct injection of the sample without the need for a chemical or enzymatic pre-treatment step to soften the spore coat prior to lysis. Lysis of Bacillus subtilis spores, a benign simulant of Bacillus anthracis, is achieved by flowing the sample through a tube whose axis is parallel to the faces of two transducers that deliver 10 W cm-2 to the surface of the tube at 1.4 MHz frequency. Increases in amplifiable DNA were assessed by real-time PCR analysis, which showed at least a 25-fold increase in amplifiable DNA following ultrasonic treatment, and dilution-to-extinction PCR, which suggests up to a 100-1000-fold increase. The modular design of the ultrasonic system and integrated fluidics allow it to be incorporated into multi-step sample treatment and detection systems.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 979509
- Report Number(s):
- PNNL-SA-58098; 30400
- Journal Information:
- JALA. Journal of the Association for Laboratory Automation, 14(5):277-284, Journal Name: JALA. Journal of the Association for Laboratory Automation, 14(5):277-284 Journal Issue: 5 Vol. 14
- Country of Publication:
- United States
- Language:
- English
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