MULTI-PHOTON MICROSCOPY: APPLICATIONS AND THEORY PART II
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1 MULTI-PHOTON MICROSCOPY: APPLICATIONS AND THEORY PART II JAMES LOPEZ PH.D. NATIONAL SALES APPLICATIONS SPECIALIST FLUOVIEW LASER SCANNING CONFOCAL AND MULTIPHOTON
2 SINGLE PHOTON VERSUS TWO PHOTON IMAGING
3 TWO-PHOTON DISCOVERY MARIA GOEPPERT-MAYER FIRST DESCRIBED THE PROCESS OF TWO-PHOTON ABSORPTION IN HER DISSERTATION IN 1931 (UNIVERSITY OF GÖTTINGEN). MATHEMATICALLY PREDICTED. 2P LASERS WERE NOT INVENTED UNTIL 1960 S. LATER RECEIVED NOBEL PRIZE FOR WORK ON ATOMIC NUCLEAR SHELL THEORY. 2-P MICROSCOPY PIONEERED BY WINFRIED DENK IN THE LABORATORY OF WATT WEBB AT CORNELL. 2-P PATENT WAS HELD BY DENK, STRICKLER, WEBB 1991 (RECENTLY EXPIRED).
4 GM UNITS FOR 2P-CROSS SECTIONS
5 NUMERICAL APERATURE NA = n sin µ 4 Fluorescence NA 2 Mag Intensity Super 25x Water Objective MPE NA = 1.05 Mag = 25x UPLANFL 20X Dry Objective NA = 0.5 Mag = 20x n refractive index Air = 1.0 Water = 1.3 Oil = 1.5 Fluorescence Intensity 12.4x Resolution 2.1x (R = λ/2na)
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7 EMISSION WAVELENGTH AND RESOLUTION
8 FV1000MPE components Confocal detectors Reflected detector Pulsed TiS laser AOM Motorized beam expander Forward detector SEG-MRKT-PP-11
9 SINGLE PHOTON (CONFOCAL )VS. MULTI-PHOTON EXCITATION
10 Lasers for MPE microscopy Almost all lasers used for MPE microscopy are Titanium sapphire or Ti:sapphire lasers. Typical pulse durations range from 80 femptoseconds (fsec) to 140 fsec. Typical bandwidth is from 690 to 1040nm, limited by the falloff in laser power available at the extremes of the range and other factors. At a typical repetition frequency of 80MHz, there are 134 pulses per pixel at 1 frame/sec at 512 x 512 pixels resolution.
11 Image Collection In Confocal vs MP Confocal Microscope Multi-Photon Microscope No need for confocal aperture Excitation only at the focal plane
12 Simple optical path and optimized optics for efficient 2P detection.
13 RELATIONSHIP BETWEEN IMAGE INTENSITY AND LASER POWER AND PULSE WIDTH
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15 RELATIONSHIP BETWEEN IMAGE INTENSITY AND LASER POWER AND PULSE WIDTH
16 RELATIONSHIP BETWEEN IMAGE INTENSITY AND LASER POWER AND PULSE WIDTH
17 LINEAR AND NONLINEAR IMAGING MODALITIES
18 SECOND HARMONIC GENERATION (SHG) HIGHLY ORDERED MOLECULAR STRUCTURE NONCENTROSYMMETRIC MOLECULAR STRUCTURE -NO INVERSION CENTER LIGHT EXITING SHG MATERIAL IS: ½ λ AND 2E OF LIGHT ENTERING SHG MATERIAL 860nm excitation -> 430nm emission at 2x ENERGY MUSCLE, COLLAGEN, POLYSACCHARIDES ENERGY CONSERVED - MOLECULES ARE NOT EXCITED NO PHOTOBLEACHING AND NO PHOTOTOXICITY LABEL FREE COLLAGEN
19 Second Harmonic Generation Collagen Emission with 800nm TPE
20 SECOND HARMONIC GENERATION
21 SECOND HARMONIC GENERATION IMAGING MIP xyz 25X 860nm excitation (LABEL FREE) COLLAGEN INSIDE OF INTACT MOUSE LYMPHNODE
22 RELATIONSHIP BETWEEN IMAGE INTENSITY (SHG) AND PULSE WIDTH
23 SECOND HARMONIC GENERATION Polysaccharide (starch) packets in a slice of raw potato 25x MIP xyz LABEL FREE 860nm
24 C. elegans Second Harmonic Generation Imaging Epi-SHG Forward-SHG
25 SECOND HARMONIC GENERATION MOUSE MUSCLE SHG 25X LABEL FREE INTRAVITAL 860nm EXCITATION
26 SHG AND TPEF/2PEF
27 Second Harmonic Generation and TPEF 860nm excitation Skin graft infected with GFP encoding virus SHG Emission in violet and green 25x DEEP
28 Rat skin 800nm E-SHG TRITC AUTO AUTO 25x
29 Second Harmonic Generation and TPEF-AUTOFLUORESCENCE 800nm excitation Emission in violet and green MIP XYZ Human skin section 25x Label free
30 Second Harmonic Generation and TPEF-AUTOFLUORESCENCE 800nm excitation Emission in violet and green MIP XYZ C. elegans 25x Label free
31 Alzheimer s Plaques Amyloid in red SHG in grey DAPI in white/grey Stitching upgrade
32 FV1000MPE Exclusive Super 25x Transgenic zebrafish expressing GFP in pancreatic beta cells. GFP Anti-insulin E-SHG F-SHG Dr. Stef Nalle Dr.Vicky Prince
33 Membrane Potential using FM4-64 SHG MPE 950nm DM505 Fluorescence at nm SHG at 475nm overlay
34 COMBINING IMAGING OF MEMBRANE POTENTIAL (SHG) WITH IMAGING ph (2P FLUORESCENCE)
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36 2PEF/TPEF
37 GFP-LABELED GLOMERULUS DEXTRAN-TEXASRED VESSELS INTACT KIDNEY FROM A TRANSGENIC MOUSE FOLLOWING CARDIAC PERFUSION WITH DEXTRAN-TEXASRED
38 Drosophila testes
39 Transgenic GFP-IP3R3 in olfactory bulb
40 Human intestine
41 GFP Neuron Spines
42 INTRAVITAL GFP TUMOR CELLS 2PEF GFP LABELED TUMOR CELLS INJECTED INTO MOUSE 960nm Z-series Optical sectioning MIP XYZ
43 ZEBRAFISH HEAD 920nm GFP 2PEF LABELED ZEBRAFISH HEAD RACHEL WONG LABORATORY 25X
44 INTRAVITAL IMAGING CONSIDERATIONS MOVEMENT HEART BEAT BREATHING RUNNING ANIMAL SURVIVAL BODY WINDOWS VENTILATOR ANESTHESIA UPRIGHT VS. INVERTED DEPTH OF IMAGING TTL TRIGGERING OF ACQUISITION TIME RESOLUTION
45 MICROPROBE OBJECTIVES wide-angle 6X magnification (NA 0.14) 1.3 mm-diameter lens high-resolution 20X magnification (NA 0.5) 1.3 mm-diameter lens high resolution 27X magnification (NA 0.7) 3.5 mm-diameter
46 INTRAVITAL IMAGING DEXTRAN-TEXAS RED LABELED BLOOD VESSELS TUMOR CELLS LABELED WITH GFP VISUALIZING METASTASIS 25X LIVE MOUSE UNDER ANESTHESIA 920nm excitation
47 - compensation + compensation Dr. Ken Dunn IUPUI Animal Imaging Facility
48 LABEL FREE LIPID IMAGING USING CARS (UPGRADE FOR FV1000MPE) COHERENT ANTI-STOKES RAMAN SCATTERING (CARS) MICROSCOPY IMAGING LIPIDS (CH2) WITHOUT STAINING OR FLUORESCENT TAGS COMBINE WITH OTHER (LABEL FREE) TECHNIQUES INTRINSIC FLUORESCENCE FLUORESCENT PROTEIN OR DYE SHG
49 COHERENT ANTI-STOKES RAMAN SCATTERING (CARS) PRINCIPLE p s p p s Two excitation wavelength, ωp (pump) and ωs (Stokes). The wavelength difference ( ) matches vibration frequency. It is coherent. The signal appears in a specific direction (forward or backward) The first two light-matter interaction prepared the coherent state. The third interaction create Raman scattering. NIR excitation, high optical resolution
50 Coherent Anti-Stokes Raman Spectroscopy (CARS)
51 PROPERTIES OF CARS SIGNAL CARS signal can be detected in Epi and Forward direction. Called E-CARS and F-CARS signal. E-CARS signal is weak relative to FCARS, but sensitive to small features F-CARS is strong due to coherent addition
52 RAMAN SPECTROSCOPY INSIDE A CELL Intenisty CH2 (lipid) Phosphate (DNA) Amide 1 (protein) Wavenumber (cm-1) Strong CH2 signal
53 GENERATING THE PUMP AND STOKES BEAMS WITH A PCF
54 LOW DISPERSION WITH THE CARS PCF
55 Simultaneous Forward CARS/Second Harmonic Generation Detection Excitation: Pump 800nm Stokes 1040nm PMT SHG: nm DM 485nm PMT Emission CARS: nm
56 Multimodal Imaging using FV1000MPE Porcine muscle tissue with no staining RED : CARS (lipid) GREEN : TPE WHITE : SHG (collagen)
57 CARS imaging of lipids in vivo Myelin sheath (70% lipid) of rat dorsal root nerve Image courtesy of: Dr. Albert Stolow (NRC,Canada)
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59 E-CARS F-CARS Epi-TPEF High-fat fed mouse fat imaged with F-CARS, E-CARS, and TPEF. Maximum Intensity Projections. 800nm Pump 1040nm Stokes Super 25X 1.05NA Scale Bar = 100µm Olympus FV1000MPE-CARS
60 CARS AND SHG Porcine Super 25x Epi-CARS SHG
61 CARS AND SHG Porcine Super 25x Epi-CARS SHG
62 CARS AND SHG Salmonoides Super 25x Epi-CARS Second Harmonic Generation
63 SHG / TPEF / F-CARS Early cancer metasis labeled with GFP (GREEN) invading liver tissue visualized with Forward-CARS (PURPLE) and second harmonic generation (BLUE) in a nude mouse.
64 Breast cancer tissue 800nm pump 1040 stokes E-SHG F-SHG CARS 25x Scale bar = 100um
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66 E-CARS F-CARS
67 Intestinal villi from olive oil gavaged mouse. E-CARS Autofluorescence Label free 25x MIP
68 CARS Lipid Imaging Applications Lipids are hard to image Extracted during fixation Extrinsic dyes can disrupt structure No antibodies Biological Relevance, areas of Study lipid-droplet biology lipid metabolism in simple organisms obesity-cancer-lipids in metastasis relationship atherosclerotic lesions lipid-rich structures including myelin sheath, skin, and brain
69 Combining Electrophysiology with Imaging
70 Combining Electrophysiology with Imaging
71 NEW OLYMPUS 25X MPE OBJECTIVE Super 20x Dipping Objective 0.95NA 2mm WD Super 25x MP Dipping Objective 1.05NA 2mm WD
72 Nature Neuroscience - epub Aug. 2011
73 OLYMPUS 25x MPE Objective Olympus 25x MPE Objective NA 1.05 Water WD 2.0
74 OLYMPUS Scaleview 25x MPE Objective NEW! Olympus Scaleview 25x MPE Objective NA 1.0 Scale-A2 WD 4.0
75 Olympus Scaleview 25x MPE Objective NA 1.0 Scale-A2 WD 4.0
76 NEW Olympus Scaleview-A2 Clearing Reagent
77 Clearing Reagent Comparison: Olympus Scaleview-A2 vs. BABB
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81 FV1000MPE IMAGING SYSTEM OFFERS NEW CAPABILITIES Visible Confocal Visible spectral confocal imaging for multi-color high resolution optical sectioning. MPEIntravital imaging in upright and inverted configurations. Deep tissue imaging. Extended timelapse. SHGCollagen, muscles, electrical potential, Alzheimer s plaques. *ALL FORWARD AND REFLECTED MPE IMAGING
82 Transgenic mouse eyes expressing tdtomato
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