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SuperResolution Microscopy and its Applications in Fast and Complex Biological Systems Manasa V. Gudheti, Ph.D., Applications Scientist

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Page 1: Super Resolution Microscopy and its Applications in Fast ... · PDF fileSuper‐Resolution Microscopy and its Applications in Fast and Complex ... • Biological System: Live HeLa

Super‐Resolution Microscopy and its Applications in Fast and Complex Biological SystemsManasa V. Gudheti, Ph.D., Applications Scientist

Page 2: Super Resolution Microscopy and its Applications in Fast ... · PDF fileSuper‐Resolution Microscopy and its Applications in Fast and Complex ... • Biological System: Live HeLa

Outline

• Introduction to Super‐Resolution Microscopy• Single Molecule Localization (SML)• Vutara 350  Design & Features• Biological Applications

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Evolution of Super Resolution Microscopy

Z

X

100 nm

Resolutionxy‐20 nm; z‐50 nm

Single molecule Localization (SML)

Confocal                        SIM                        STED

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250 nm

Principle of Single Molecule Localization (SML)

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Principle of Single Molecule Localization (SML)

Images are captured from two focal planes simultaneously on the Vutara microscope

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Super resolutionConventional

Alexa 647 labeled microtubules in a BSC1 cell

Comparison

2 um

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Vutara 350: Video Rate Super‐Resolution Microscope

• Fastest 3D super‐resolution microscope on the market• Only 3D video‐rate super‐resolution microscope• Precise 3D super‐resolution (SML) : 20nm (x,y) & 50nm (z)• Designed by scientists for biologists • Easy to use, yet powerful software• Loaded with innovative and cutting edge features

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• ResEnhanced Technology• 3D w/ Biplane• Quadfield• Parallel Processing

Innovative Design

Vutara 350

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sCMOS

ResEnhanced

Pixel Specific Noise

ResEnhanced Technology for sCMOS

Adapted from Huang et al. Nat. Meth. 10, 653‐658 (2013)

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Adapted from Juette et al. Nat. Methods. 5, 527‐529 (2008)

1

405

488

561

640

750*2

Vutara Laser Launch

EMCCD sCMOS

Lens

Beam splittermirror

Dichroic

*750 on Vutara 350 Video Rate Super‐Resolution Microscope

Cutting Edge 3D

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x

z

camera camera

plane 2plane 1

0 nm

+125 nm

+250nm

‐125nm

‐250nm

1 µm

Joerg Bewersdorf

Biplane Approach

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Biplane Offers Superior Localization Over Astigmatism

Average localization precision (sigma) vs background (beta) comparison for x,y,z (a,b,c) for N=6,000 (top panel) and N= 1,000 photons (bottom panel) for all signal to background levels the biplane shows superior results. (Adapted from Badierireostami et al. Applied Physics Letters 97, 161103 (2010))

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Quadfield

Detector

Color1

Color2

Customized:• 2 Colors / 2 Planes• 4 colors

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Vutara SRX Software

• Software uses parallel processing• GPU + Multi‐threaded CPU• Fast real‐time localization with acquisition• Advanced 3D visualization• Measured point spread function• Integrated drift correction• Open source data export

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750

750 nm laser

Even illumination

3D particle tracking

Ease of use Multi‐color Custom design

Speed Live‐cell High power lasers

Vutara 350 Cutting Edge Features

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Speed

800fps 800fps 2500fps

Alexafluor‐647 labeled alpha‐tubulin (Red) and Cy3B labeled TOM20 (Green)in BSC1 cells

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Speed Comparison

Betzig2006

2 hr‐12 hr

20 min

SRsystems

Vutara200

Vutara350

1‐15 sec10 min

Faster Imaging:1. More accurate data

• Lower drift• Better colocalization

2. Higher throughput• More experiments in less time

Betzig et al. Science. 313, 1642‐1645 (2006)

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Live‐cell Imaging

• Biological System: Live HeLa Cell• Label: mEos3.2‐clathrin light chain• Imaged at 600 fps  for 58 s• 2 seconds per SR image

Adapted from Huang et al. Nat. Meth. 10, 653‐658 (2013)

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Live‐cell Fast Imaging using Organic Dyes

• Biological System: LiveEA.Hy926 Cell• Label: AlexaFluor 647 labeled transferrin• Imaged at 1600 fps • Super‐resolution images were reconstructed 

from sequential sets of 50 frames  (31‐ms acquisition time or 32 super‐resolution images per second )

Adapted from Huang et al. Nat. Meth. 2013

Adapted from Huang et al. Nat. Meth. 10, 653‐658 (2013)

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Live Cell Imaging of BSC1 cells Labeled with AF647 Transferrin

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Plane 1 Plane 2

Model: Live A431 CellsLabel: QDot655‐EGFRSpeed: 50 frames/s

3D Particle Tracking

Model: Live BSC1 cellsLabel: Cy3B labeled mRNA Speed: 200 frames/s

Membrane TargetIntracellular Target

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High Power Lasers

Jones et al. Nat. Meth. 8, 499‐505  (2011)

405

488

561

640

750

488 – 1000mw561 – 1000mw640 – 1000mw750 – 1000mw

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750 nm Excitation

Biological System:  BSC1 cellsGreen: AF647 TOM20 mitochondriaRed: AF750 Tubulin

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Vutara’s Edge to Edge Illumination

Good data region

Bad data region Whole region of interest is usable

Image from Vutara Image from other SML scope

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Ease of Use‐System Demo

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Multi‐color Imaging

Biological System: Vero CellGreen: Cy3B TOM20 mitochondriaRed: AF647 Tubulin

Biological System: Vero CellGreen: Cage fluorescent dye 505clathrinRed:  Rhodamine spiroamide 565tubulin

Biological System:  BSC1 cellsGreen: AF647 TOM20 mitochondriaRed: AF750 Tubulin

*750 on  Vutara 350 Video Rate Super‐Resolution Microscope

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Biological Applications

Infectious Diseases Reproduction

Developmental Biology Cell Biology and Cancer Neuroscience

Cardiology

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Coverslip

Biological System: E.ColiTarget: Outer MembraneDye: Cy5

Color coded for depth

Courtesy of Dr. Tomasz Zal – MD Anderson Cancer Center, Texas

Single E. Coli standing on coverslip

3D  Image with Single Z Plane Acquisition

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Biological System:  hRSVGreen: Cy3B RNA antisense probeRed: Alexa 647 F‐protein

Human Respiratory Syncytial Virus (hRSV)

Alonas  et al. ACS Nano 8, 302‐315 (2014)

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Biological System:  Canine cardiomyocyteRed:  Alexa 647 alpha‐actinin

Imaging in Cardiomyocytes

Lichter et al. Journal  of Cellular and Molecular Cardiology 72, 186‐195 (2014)

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3D Super‐Resolution z‐stack in Mouse Spermatocyte

AF 647 labeled synaptonemal complex protein 3 (SYCP3)

Sample courtesy of Mark Lessard, The Jackson Laboratory

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3.2 µm 600 nm

Z slice

3D Super‐Resolution Accuracy and Validation

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Biological System: DrosophilaGreen: Alexa 488 Frizzled ReceptorRed: DyLight 649 Lamin C

Developmental Biology‐Thick Samples

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Images courtesy of Dr. Chris German, University of Utah

Biological System: 30 µm Striatal Rat Brain SlicesGreen: Cy3B SNAP‐25Red: Alexa 647 Vesicular Monoamine Transporter‐2 (VMAT2) 

Super‐Resolution Imaging in TissueSaline

Drug

‐Treated

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Multi‐color Imaging in Cell Biology

Biological System: Cos 7 CellGreen: Alexa 568 Complex IVRed: Alexa 647 TOM 20

Image courtesy of Dr. Cliff Guy, St. Judes

Biological System: HeLa cellGreen: ATTO 488 tubulinRed: Alexa 647 midbody proteinBlue: Cy3B midbody protein

Biological System: HeLa cellGreen: Alexa 488 tubulinRed: Alexa 647 midbody protein

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Multi‐color Imaging in Neurons

Images courtesy of Andrew Taibi,    Dr. Jason Shepherd, University of 

Utah 

Biological System:  Rat Cortical NeuronsGreen:  Alexa 488 MAP2 (dendritic/axonal marker)Magenta:  alexa555 Arc (postsynaptic ‐associates with endocytic  machinery to get rid of surface AMPA Receptors)Cyan:  Alexa 647 GluR1 (live and surface labeled only)

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Biological System: Vero CellGreen: Cage fluorescent dye 505clathrinRed:  Rhodamine spiroamide 565tubulin

Imaging without Switching Buffer

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Summary

• Enhanced Resolution: x,y‐20 nm, z‐50 nm• Speed: enables live cell imaging• Versatility: various biological applications• Ease of use: results

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