Imaging intracellular fluorescent proteins at nanometer resolution.
Eric Betzig,George H. Patterson,Rachid Sougrat,O. Wolf Lindwasser,Scott G. Olenych,Juan S. Bonifacino,Michael W. Davidson,Jennifer Lippincott-Schwartz,Harald F. Hess +8 more
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TLDR
This work introduced a method for optically imaging intracellular proteins at nanometer spatial resolution and used this method to image specific target proteins in thin sections of lysosomes and mitochondria and in fixed whole cells to image retroviral protein Gag at the plasma membrane.Abstract:
We introduce a method for optically imaging intracellular proteins at nanometer spatial resolution. Numerous sparse subsets of photoactivatable fluorescent protein molecules were activated, localized (to approximately 2 to 25 nanometers), and then bleached. The aggregate position information from all subsets was then assembled into a superresolution image. We used this method--termed photoactivated localization microscopy--to image specific target proteins in thin sections of lysosomes and mitochondria; in fixed whole cells, we imaged vinculin at focal adhesions, actin within a lamellipodium, and the distribution of the retroviral protein Gag at the plasma membrane.read more
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Particle tracking in drug and gene delivery research: State-of-the-art applications and methods ☆
TL;DR: This review discusses particle tracking-based advances in characterizing extracellular and cellular barriers to therapeutic nanoparticles and in characterizes nanoparticle size and stability and concludes by reviewing technological developments for next-generation particle tracking methods.
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Super-resolution enhancement by quantum image scanning microscopy
Ron Tenne,Uri Rossman,Batel Rephael,Yonatan Israel,Yonatan Israel,Alexander Krupinski-Ptaszek,Radek Lapkiewicz,Yaron Silberberg,Dan Oron +8 more
TL;DR: In this article, the authors introduced the Q-ISM principle and obtained super-resolved optical images of a biological sample stained with fluorescent quantum dots using photon antibunching, a quantum effect, as a resolutionenhancing contrast mechanism.
Journal ArticleDOI
Fluorescent probes for superresolution imaging of lipid domains on the plasma membrane
Hideaki Mizuno,Mitsuhiro Abe,Peter Dedecker,Asami Makino,Susana Rocha,Yoshiko Ohno-Iwashita,Johan Hofkens,Toshihide Kobayashi,Atsushi Miyawaki +8 more
TL;DR: It is concluded that cholesterol- and sphingomyelin-enriched domains occupy different regions on the plasma membrane.
Journal ArticleDOI
Nanoscale organization of mitochondrial microcompartments revealed by combining tracking and localization microscopy.
TL;DR: Using a photostable rhodamine attached specifically to Halo-tagged proteins in mitochondrial membranes, this work was able to track and localize single protein complexes such as Tom20 and ATP synthase in suborganellar structures in live cells.
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Flat clathrin lattices: stable features of the plasma membrane
Joe Grove,Daniel J. Metcalf,Alex E. Knight,Silène T. Wavre-Shapton,Tony Sun,Emmanouil D. Protonotarios,Lewis D. Griffin,Jennifer Lippincott-Schwartz,Mark Marsh +8 more
TL;DR: Quantitative electron, superresolution, and live-cell microscopy reveal that FCLs provide stable platforms for the recruitment of endocytic cargo in clathrin-coated pits.
References
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TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
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Surpassing the lateral resolution limit by a factor of two using structured illumination microscopy.
TL;DR: Lateral resolution that exceeds the classical diffraction limit by a factor of two is achieved by using spatially structured illumination in a wide‐field fluorescence microscope with strikingly increased clarity compared to both conventional and confocal microscopes.
Journal ArticleDOI
Precise nanometer localization analysis for individual fluorescent probes
TL;DR: A localization algorithm motivated from least-squares fitting theory is constructed and tested both on image stacks of 30-nm fluorescent beads and on computer-generated images (Monte Carlo simulations), and results show good agreement with the derived precision equation.
Journal ArticleDOI
Nonlinear structured-illumination microscopy: Wide-field fluorescence imaging with theoretically unlimited resolution
TL;DR: Experimental results show that a 2D point resolution of <50 nm is possible on sufficiently bright and photostable samples, and a recently proposed method in which the nonlinearity arises from saturation of the excited state is experimentally demonstrated.
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Myosin V Walks Hand-Over-Hand: Single Fluorophore Imaging with 1.5-nm Localization
Ahmet Yildiz,Joseph N. Forkey,Sean A. McKinney,Taekjip Ha,Taekjip Ha,Yale E. Goldman,Paul R. Selvin,Paul R. Selvin +7 more
TL;DR: The results strongly support a hand-over-hand model of motility, not an inchworm model, which moves processively on actin.
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