super-resolution microscopy - uzh
Post on 04-Dec-2021
6 Views
Preview:
TRANSCRIPT
SUPER-RESOLUTION MICROSCOPY
Dr. Nathalie Garin
Content
Motivation for superresolution
Superresolution, nanoscopy, …: definition
Structured Illumination Microscopy (SIM)
Localization microscopy
STimulated Emission Depletion (STED)
Combined technics
PSFs melt together...
... not a good representation of the structure
Rolf Borlinghaus / Leica
The diffraction limit
Why Superresolution Microscopy?
Diffraction Limit
Cell Bacterium Mitochondrium Influenza Virus Titin GFP
sin2nx
Content
Motivation for superresolution
Superresolution, nanoscopy, …: definition
Structured Illumination Microscopy (SIM)
Localization microscopy
STimulated Emission Depletion (STED)
Combined technics
Abbe limit: Pushing or breaking?
Confocal superresolution Nanoscopy Confocal
Content
Motivation for superresolution
Superresolution, nanoscopy, …: definition
Structured Illumination Microscopy (SIM)
Localization microscopy
STimulated Emission Depletion (STED)
Combined technics
Horn et al., (2013) JCB 202: 1023-1039
KASH5 SCP3
Slide courtesy: G. Wright, Singapor H. Horn, Journal of Cell Biology (2013)
f (x) a0 an cos(nx
Ln )
n1
Fourier series (1D)
Vincent Studer IINS - Bordeaux
ˆ f (r k ) f (
r )e2i
r k .
r d2 r
f (r ) ˆ f (
r k )e
2ir k .
r d2
r k
Fourier transform
FT
Inverse FT
Real Space
Fourier space
r r (x,y,z) (
r ,z)
r k (kx,ky,kz) (
r k ,kz)
r r (x,y,z) (
r ,z)
f (r )
r k (kx,ky,kz) (
r k ,kz)
ˆ f (r k )
kx
ky
Vincent Studer IINS - Bordeaux
Two superimposed patterns (in this case the illumination pattern and the structures in the sample) interfere with each other and produce a third, characteristic pattern: the Moiré fringes. The Moiré fringes have a lower spatial frequency than the original structures within the sample. Therefore, the fringes can be transmitted by a normal objective lens.
Creating a Moiré Fringe
TF
TF
x OTF=
x OTF=
Vincent Studer IINS - Bordeaux
Optical Sectioning
Vincent Studer IINS - Bordeaux
Optical Sectioning
Vincent Studer IINS - Bordeaux
Optical-Sectioning
Vincent Studer IINS - Bordeaux
keratin-14
3D-SIM
Applied Precision
Gustafsson et al. 2008. BioPhy J
SIM: take home message
Wide field technique
Works with any fluorophore
Sub-diffraction resolution (130 nm x 350 nm, Zeiss website)
Un‐modulated areas of the sample due to out of focus fluorescence do
not contribute to the signal but they add shot noise ! Problem with thick samples.
‐> TIRF – SIM is therefore of great interest for low level fluorescence
where shot noise is important
Content
Motivation for superresolution
Superresolution, nanoscopy, …: definition
Structured Illumination Microscopy (SIM)
Localization microscopy
STimulated Emission Depletion (STED)
Combined technics
Galectin-3 accumulates in Flotillin-positive endosomes
Slide courtesy: Ralf Jacob, Marbrug
WF single molecule superresolution
The solution with diffraction limited resolution
Diffraction limited resolution FWHM of the PSF
NNAx
2
Localization resolution
(N= number of photons)
Thompson et al., Biophys. J. 2002
Movie courtesy: Claudio Dellagiacoma, EPFL, Lausanne
S1
S0
T1
t ~ 100ms
t ~ 3ns
10k to 100k frames – calculate centre of mass – Sum
Fölling, J., Bossi, M., Bock, H., Medda, R., Wurm, C.
A., Hein, B., Jakobs, S., Eggeling, C. and Hell, S. W.,
Nat Methods. 5(2008), 943 - 945
Localization microscopy acquisition
Acronymes
Sam Hess
PALM PhotoActivation Light
Microscopy
uPAINT Universal Point Accumulation Imaging in the
Nanoscale Topography
N-STORM Stochastic Optical
Reconstruction Microscopy
Ground state depleted
GSDiM / (D)STORM The dark state of fluorescence – not bleaching
3D: different possibilities
Astigmatism Double helix
biplane microscopy US 7880149 B2
Localization techniques: take home message
Widefield technique
Calculated SR
Works with any fluorophores
Sub-diffraction resolution:
o 20 nm in xy
o 50nm in z
Often in TIRF
Content
Motivation for superresolution
Superresolution, nanoscopy, …: definition
Structured Illumination Microscopy (SIM)
Localization microscopy
STimulated Emission Depletion (STED)
Combined technics
Does it colocalize?
Confocal
STED
29
Centrioles in U2OS cells visualized by indirect immunofluorescence. Co-localization of Centrin3 – Alexa Fluor 594 (green) and Cep152 – Alexa Fluor 647 (red) in confocal (left) and deconvolved STED image (right). Sample courtesy of Ella Fung, CRUK/MRC Oxford Institute for Radiation Oncology, UK. The anti-Cep152 antibody was kindly provided by E. Nigg, Biozentrum, University of Basel, Switzerland (Sonne KF et. al. J Cell Science 2013).
500 nm
The diffraction limit
Point
Detector
Lens Scan
Ernst Abbe, 1873 Consequence:
Diffraction prevents to separate objects closer than 200nm
(= ½ wavelength of visible light)
sin2nx
Breaking the diffraction limit
Point
Detector
Lens Scan
Stefan W. Hell, Inventor of STED-microscopy
Reducing the area of effective excitation, in combination with a scanning microscope breaking the diffraction limit becomes possible
STED Microscopy – PSF shaping
•
On state Off state
STED: a switch off process
Pyridine 2
The driving forces: laser and dye development
~ 200 nm
~ 150 nm
~ 75 nm
Gated STED
Lifetime distribution within STED CW focal spot
STED Confocal
Gated STED: The Principle
For CW STED resolution has a life time dependence
Short lived states cause somehow blurry appearance and reduce the contrast of STED CW images
Gated STED only records fluorescence from long living states
Improved resolution
Clearer images/better contrast
Standard STED CW with pulsed Excitation
Time (ns)
Fluorescence
Excitation
Detection
Confocal
DNA Origami 70nm distance
Standard STED CW with pulsed Excitation
Time (ns)
Fluorescence
Excitation
STED
Detection
STED CW
STED laser not used at full power
DNA Origami 70nm distance
Gated STED
Time (ns)
Excitation
STED
Detection
STED laser not used at full power
DNA Origami 70nm distance
Gated STED
Time (ns)
Excitation
STED
Detection
STED laser not used at full power
DNA Origami 70nm distance
Deuterosomes: platform for centriole amplification
Work done with C. Boutin, Institut de Biologie du Développement de Marseille Centriole marker: yellow/Alexa488 Deuterosome marker: Cyan/Alexa568, magenta/Alexa514
1mm
Cleared kidney sample: 45-55 µm inside
Confocal 3D STED
Sample courtesy of David Unnersjö Jess, KTH, Stockholm More on clearing on Leica Science Lab
STED: take home message
Confocal technique
Optical SR
Works with any fluorophores depleted by 592, 660 or 775nm
Sub-diffraction resolution:
o <50 nm in xy
o < 130 nm in z
Ideal for thick and living samples
Content
Motivation for superresolution
Superresolution, nanoscopy, …: definition
Structured Illumination Microscopy (SIM)
Localization microscopy
STimulated Emission Depletion (STED)
Combined technics
Lattice light sheet
Technic combining:
o Light sheet fluorescence microscopy
o Bessel beam microscopy
o Structured Illumination Microscopy (SIM)
https://www.janelia.org/lab/betzig-lab
Lattice light sheet
https://www.janelia.org/lab/betzig-lab
Confocal focus cross section
500 nm
Combining the Numerical Aperture of 2 opposing objectives
Volume reduction by factor 3 – 5 compaired to confocal
Interference side lobes are removed mathematically
4Pi focus cross section
110 nm
x
z z
4Pi microscopy (Stefan Hell)
4Pi measurements in living cells
4Pi microscopy
Conventional fluorescence microscopy
Summary
Modified from JBC Review 2010 Lothar Schermelleh, Rainer Heintzmann and Heinrich Leonhardt
Gated STED
<50
560 70
/GSDIM
70
3D STED
<130
<130
Sample courtesy: Anne Aubusson-Fleury, CNRS, Gif sur Yvette, France
From microscopy to nanoscopy
Some references
Stefan W. Hell & Jan Wichmann (1994). "Breaking the diffraction resolution limit by stimulated emission: stimulated-emission-depletion fluorescence microscopy". Optics Letters M. L. Bossi, J. Fölling, M. Dyba, V. Westphal, S. W. Hell (2006). "Breaking the diffraction resolution barrier in far-field microscopy by molecular optical bistability" New J. Phys. Lothar Schermelleh et al. (2010). A guide to super-resolution fluorescence microscopy J Cell Biol. Review Gustafsson, M. G. L. (2000). Surpassing the lateral resolution limit by a factor of two using structured illumination microscopy. Journal of Microscopy. Bi-Chang Chen et al. (2014). Lattice light-sheet microscopy: Imaging molecules to embryos at high spatiotemporal resolution. Science
top related