13-05-2021 дата публикации
Номер: US20210139952A1
The present disclosure provides improved methods for bead beating and a bead beating system useful therefor. The bead beating system comprises a sample tube, beads, and a dry blocking agent, and methods for using the bead beating system to extract nucleic acids from cells containing the nucleic acids. 1. A method for producing a lysate from cells contained in a liquid sample , comprising agitating the liquid sample within a bead beating system in the absence of lysis buffer and in the presence of one or more blocking agents under conditions sufficient to lyse the cells , said bead beating system comprising a bead beating tube and beads.2. The method of claim 1 , wherein the liquid sample contains an endogenous blocking agent.3. The method of claim 2 , wherein the agitating is carried out in the absence additives.4. The method of claim 1 , wherein the one or more blocking agents are exogenous to the liquid sample.5. The method of claim 2 , wherein the beads:a) are adapted to lyse bacteria, yeast, filamentous fungi, spores, plant cells, or animal cells; i. mineral beads, ceramic beads, glass beads, metal beads, or a combination thereof;', 'ii. zirconium beads, zircon beads, zirconia beads, quartz beads, aluminum oxide beads, silicon carbide beads, ceramic beads, silicon dioxide glass beads, stainless steel beads, chrome steel beads, or a combination thereof;', 'c) have a diameter ranging from 50 μm to 3 mm; or', 'd) any combination of a)-c)., 'b) comprise6. The method of claim 1 , further comprising a step of placing the liquid sample within the sample tube prior to agitating the liquid sample.7. The method of claim 1 , wherein the agitating comprises subjecting the bead beating system to an oscillating motion.8. The method of claim 1 , wherein the sample is a biological sample claim 1 , an environmental sample claim 1 , or a food product.9. The method of claim 8 , wherein the sample is a biological sample selected from blood claim 8 , serum claim 8 , saliva claim 8 , ...
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