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BaHigh-force magnetic tweezers with force feedback for biological applications
Abstract
Magnetic micromanipulation using magnetic tweezers is a versatile biophysical technique and has been used for single-molecule unfolding, rheology measurements, and studies of force-regulated processes in living cells. This article describes an inexpensive magnetic tweezer setup for the application of precisely controlled forces up to 100nN onto 5μm magnetic beads. High precision of the force is achieved by a parametric force calibration method together with a real-time control of the magnetic tweezer position and current. High forces are achieved by bead-magnet distances of only a few micrometers. Applying such high forces can be used to characterize the local viscoelasticity of soft materials in the nonlinear regime, or to study force-regulated processes and mechanochemical signal transduction in living cells. The setup can be easily adapted to any inverted microscope.
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Citations
Cites
Analysis of Cell Mechanics in Single Vinculin-Deficient Cells Using a Magnetic Tweezer
Alenghat, F. J., Fabry, B., Tsai, K. Y., Goldmann, W. H., & Ingber, D. E. (2000) · Biochemical and Biophysical Research Communications · doi:10.1006/bbrc.2000.3636 · Cited by 216
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Linear and Nonlinear Rheology of Living Cells
Kollmannsberger, P., & Fabry, B. (2011) · Annual Review of Materials Research · doi:10.1146/annurev-matsci-062910-100351 · Cited by 420
Self-citationCell mechanics: principles, practices, and prospects
Moeendarbary, E., & Harris, A. R. (2014) · WIREs Systems Biology and Medicine · doi:10.1002/wsbm.1275 · Cited by 342
Three-dimensional force microscopy of cells in biopolymer networks
Steinwachs, J., Metzner, C., Skodzek, K., Lang, N., Thievessen, I., Mark, C., Münster, S., Aifantis, K. E., & Fabry, B. (2016) · Nature Methods · doi:10.1038/nmeth.3685 · Cited by 334
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Metadata
- Authors
- Kollmannsberger, P., & Fabry, B.
- Venue
- Review of Scientific Instruments
- Publisher
- AIP Publishing
- Published
- 2007-11-01
- Volume
- 78
- Issue
- 11
- Pages
- 114301-114301
- ISSN
- 0034-6748 (ISSN-L)
- 1089-7623
- OpenAlex
- W1978992840
- Cited by
- 177
- References
- 1
- FWCI
- 3.87
- Type
- journal article
- Language
- en
- Open access
- closed
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