Rosenbaum A, Bleck E, Schneider M, Pongratz G, Vordenbäumen S. Assessment of direct versus indirect magnetic bead-based T-cell isolation procedures followed by magnetic bead-based DNA isolation.
Lupus Sci Med 2016;
3:e000167. [PMID:
27547441 PMCID:
PMC4964240 DOI:
10.1136/lupus-2016-000167]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 06/25/2016] [Indexed: 11/04/2022]
Abstract
OBJECTIVE
To compare direct and indirect bead-based T-cell isolation followed by magnetic bead-based DNA isolation.
METHODS
T-cells were isolated by direct or indirect selection with magnetic bead coated antbiodies followed by magnetic bead-based automated DNA isolation in 10 healthy subjects. Purity of T-cells, purity of DNA (by A260/A280 ratio measurement) and DNA concentration were assessed.
RESULTS
Direct and indirect labelling resulted in comparable T-cell purity (93.11±1.47% vs. 94.99±1.54%, p= 0.125) and DNA concentration per cell (50.97±14.15 ng/(mlxcell) vs. 49.53±13.62 ng/(mlxcell), p=0.492), while DNA purity was significantly higher after direct labelling (1.82±0.05 vs. 1.78±0.03, p=0.0488).
CONCLUSIONS
Both direct and indirect magnetic bead-based T-cell selection may be used prior to magnetic bead-based DNA isolation procedures.
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