## Abstract Cyclosporin A (CyA) and bongkrekic acid (BK) prevented Fas‐induced apoptosis in two type I cell lines (H9 and SKW6.4) and two type II cell lines (Jurkat and CEM). CyA and BK inhibited the release of cytochrome c in all four cell lines. In type I cells and in CEM cells, CyA and BK did no
Visualization of vesicle transport along and between distinct pathways in neurites of living cells
✍ Scribed by Gerhard J. Schütz; Markus Axmann; Susanne Freudenthaler; Hansgeorg Schindler; Kostya Kandror; John C. Roder; Andreas Jeromin
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 440 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1059-910X
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✦ Synopsis
Abstract
Trafficking of secretory vesicles along neurites of PC12 cells was visualized by 2D and 3D real‐time imaging using fluorescence microscopy. Vesicle motion along distinct pathways was directly seen. From an overlay of individual pathways, the underlying cytoskeletal filament could be imaged at a subwavelength resolution. Continuous vesicle transport was interrupted by periods of diffusive motion with concomitant pathway changes. Statistical analysis shows that such interruptions were distributed stochastically along the filament, indicating a limited processivity of motor proteins also in a cellular context. Periods of diffusive motion facilitated the interaction with actively transported vesicles. Frequent associations and dissociations of vesicles have been observed consistently, pointing to a functional relevance of vesicle cotransport. Microsc. Res. Tech. 63:159–167, 2004. © 2004 Wiley‐Liss, Inc.
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