Download presentation
Presentation is loading. Please wait.
Published bySamuel Preston Williams Modified over 8 years ago
1
detect and identify Bioanalytic Mithras LB 940 plate reader for research and screening HTRF & BRET applications Protein Interaction Networks, Nov. 2007, Paris
2
Bioanalytic Mithras LB 940
3
Bioanalytic Mithras LB 940 Berthold history & products TRF/HTRF basic settings BRET settings Mithras unique features TRF/HTRF further settings Other applications Good to know Questions
4
Bioanalytic 1949founded by Prof. Dr. Rudolf Berthold 1960 taken forward by Dr. Fritz Berthold 1989 purchased from EG&G Inc. USA (today: PerkinElmer Inc.) 2000re-purchased Dr. Fritz Berthold (& family) and Hans J. Oberhofer History
5
Bioanalytic BERTHOLD TECHNOLOGIES GmbH & Co. KG Calmbacher Straße 22 75323 Bad Wildbad, Germany www.Berthold.com/bio For more than 50 years in Bad Wildbad
6
Bioanalytic Instruments for Life Sciences Microplate Readers Imaging Systems Tube Luminometers Radio HPLC Monitors Gamma Counters
7
Bioanalytic Tube Luminometers
8
Bioanalytic NightOWL II LB 983 imaging systems
9
Bioanalytic NightHAWK LB 984 Gel doc HAWKview transilluminators
10
Bioanalytic HPLC Radio Monitor LB 513 Gamma Counter LB 2111
11
Bioanalytic Microplate Readers
12
Bioanalytic Microplate reader portfolio dedicatedmulti Absorbance☑☑ Luminescence☑☑ Fluorescence Intensity☑☑ Fluorescence Polarisation☑ Time-Resolved Fluorescence☑ AlphaScreen☑ BRET☑
13
Bioanalytic Mithras LB 940
14
Bioanalytic Mithras LB 940 Halogen excitation lamp Plate carrier excitation filters PMT & emission filters Flash excitation lamp
15
Bioanalytic Mithras LB 940 Waste outlet mains Reagent injectors Reagent tubings
16
Bioanalytic Applications & Settings
17
Bioanalytic Time-Resolved Fluorescence
18
Bioanalytic Time-Resolved Fluorescence Lanthanide Chelates Europium Samarium Terbium Dysprosium Excitation @ 320-340 nm
19
Bioanalytic Time-Resolved Fluorescence Long-lived fluor.: up to 1000 µs
20
Bioanalytic Time-Resolved Fluorescence Different emission wavelengths
21
Bioanalytic Time-Resolved Fluorescence Different emission decay times
22
Bioanalytic Time-Resolved Fluorescence Large Stoke´s shift
23
Bioanalytic Time-Resolved Fluorescence DELFIA® heterogeneous method: unbound labelled molecules must be washed away HTRF® (CisBio) homogeneous method: energy transfer between cryptate and acceptor
24
Bioanalytic TRF - DELFIA as immunoassay Signal after re-chelating w/ Enhancement solution Emission @ 615 nm
25
Bioanalytic LANCE: TR-FRET the homogeneous method (PKI) Eu-Chelate as donor (615 nm) APC, Cy5 or ULight as acceptor (665 nm)
26
Bioanalytic HTRF ® : TR-FRET the homogeneous method (CisBio) Eu-Cryptate as donor (620 nm) XL665 as acceptor (665 nm)
27
Bioanalytic Time-Resolved Fluorescence Xenon flash lamp broad-band excitation filter: cwl 320 nm confocal emission optics emission filter 615 nm (DELFIA Eu) emission filters 620 nm (Cryptate Eu) and 665 (acceptor e.g. XL665) gated PMT (red enhanced response for TR-FRET)
28
Bioanalytic TR-FRET performance Mithras typicaltarget S/N 620 nm (control/bkg)7040 cv of ratio 0 Std5 %10 % Delta F of Low FRET Std28 %15 % Delta F of High FRET Std900 %600 % CisBio reader evaluation kit (white 96 well half area)
29
Bioanalytic Label dialog TRF: DELFIA Counting time per well Always full lamp energy Emission filter Cycle time: 2000 Delay Time: 400 Reading Time: 400
30
Bioanalytic Label dialog TRF: HTRF Open default HTRF.par file or start from scratch Click Options | Read
31
Bioanalytic Label dialog TRF: HTRF Samples tab: Plate selection Measured wells Injected wells Reading order
32
Bioanalytic Label dialog TRF: HTRF Measurement tab: Operation settings Operation sequence Temperature settings
33
Bioanalytic Label dialog TRF: HTRF Counting time per well Always full lamp energy Emission filter Cycle time: 2000 Delay Time: 50 Reading Time: 300
34
Bioanalytic Label dialog TRF: HTRF
35
Bioanalytic Label dialog TRF: HTRF Export with “RawData Export Driver”
36
Bioanalytic Label dialog TRF: HTRF
37
Bioanalytic HTRF – further settings Ratio calculation & HTRF ratio calculation
38
Bioanalytic HTRF – further settings Ratio calculation & HTRF ratio calculation
39
Bioanalytic HTRF – further settings Calculated data are visible in Result pages
40
Bioanalytic HTRF – export of calculations Export with “Matrix Export Driver”
41
Bioanalytic HTRF – export of calculations
42
Bioanalytic Luminescence & BRET
43
Bioanalytic Luminescence & BRET Highly efficient fiber optics unsurpassed sensitivity in luminescence Possibility to insert filters enables sensitive BRET reading enables sensitive Chroma-Glo reading Unique aperture to reduce crosstalk 96, 384 and 1536 well plates
44
Bioanalytic Luminescence & BRET Performance < 6 amol ATP per well better than most dedicated luminometers Reading time minimum 0.05 sec per well Selected filter sets for BRET and BRET² as well as for Chroma-Glo
45
Bioanalytic Luminescence & BRET
46
Bioanalytic What is BRET ? Energy (light) of Renilla reaction is transferred to fluorescent protein Read-out at emission wavelength of fluorescent protein Occurs upon close proximity Occurs upon interaction of attached biomolecules
47
Bioanalytic 7 transmembrane receptor = G protein coupled receptor (GPCR) Renilla luciferase GPCR screening with BRET
48
Bioanalytic 7 transmembrane receptor = G protein coupled receptor (GPCR) R. luciferase Upon addition of the Renilla luciferase substrate coelenterazine blue light with a peak at 480 nm is emitted Coelenterazine 1 to 5 µM GPCR screening with BRET
49
Bioanalytic ligand / agonist Attachment of ligand causes activation of the receptor incl. dissociation of the G-protein subunits and phosphorylation of the receptor R. luciferase Coelenterazine 1 to 5 µM GPCR screening with BRET
50
Bioanalytic R. luciferase Coelenterazine 1 to 5 µM ß-arrestin/eYFP ß-arrestin/eYFP fusion protein attaches to activated GPCR; this results in proximity of the Renilla luciferase and the eYFP moiety, close enough for the emitted light of the luciferase reaction to cause an energy transfer upon which eYFP emits light at ist specific emission wavelength GPCR screening with BRET
51
Bioanalytic 10 5 COS cells per well transfected with receptor- Rluc (NK1 and ß 2 A resp.) and ß-arrestin-GFP vectors Agonist screening with Isopretenerol as positive control (5 wells) and ß 2 A receptor expressing cells GPCR screening with BRET
52
Bioanalytic Universal & functional for Gs, Gi and Gq Direct and signalling pathway independent Non-radioactive Ratio-metric Luminescence-based (no auto- fluorescence) Applicable for orphan receptors Short assay development (~ 3 weeks) More sensitive than IP 3 and Ca ++ GPCR screening with BRET
53
Bioanalytic BRET Leptin receptor assay End point assay Dose-response evaluation Agonist dispensed manually
54
Bioanalytic BRET Leptin receptor assay Selection of plate format Definition of reading order Selection of measured wells Selection of injectors #2 to be used for all wells for addition of substrate
55
Bioanalytic BRET Leptin receptor assay 1 dispense step 1 delay step 1 reading operation
56
Bioanalytic BRET Leptin receptor assay dispense step for adding Coelenterazine Inj. #2 30 µL Medium speed By well
57
Bioanalytic BRET Leptin receptor assay delay step allowing the Coelenterazine to enter the cells 5 s By well
58
Bioanalytic BRET Leptin receptor assay measurement 1 s 1 st emission filter 480 nm (Rluc signal) 2 nd emission filter 530 nm (YFP signal) By well
59
Bioanalytic BRET Leptin receptor assay
60
Bioanalytic BRET Leptin receptor assay
61
Bioanalytic BRET Leptin receptor assay
62
Bioanalytic BRET Leptin receptor assay
63
Bioanalytic BRET Leptin receptor assay Options | CurveFit dialog mBRET as source matrix Four Parameter as algorithm Logarithmic x and y scales Select or define units
64
Bioanalytic BRET Leptin receptor assay Options | CurveFit dialog Click Add Intercept FMI+(FMA-FMI)*0.5 is automatically inserted = 50 % line = IC50 Click Apply to all groups
65
Bioanalytic BRET Leptin receptor assay
66
Bioanalytic BRET Leptin receptor assay
67
Bioanalytic BRET Leptin receptor assay
68
Bioanalytic altern. Leptin rec. assay Alternative operation setup: End point assay Dose-response evaluation Agonist pre-dispensed in microplate Cells added with injector
69
Bioanalytic altern. Leptin rec. assay Selection of plate format Definition of reading order Selection of measured wells Selection of injector #2 to be used for all wells for addition of substrate Selection of injector #3 to be used for all wells for addition of cells
70
Bioanalytic altern. Leptin rec. assay 2 dispense steps 1 delay step 1 reading operation
71
Bioanalytic altern. Leptin rec. assay dispense step for adding cells Inj. #3 50 µL Low speed By plate
72
Bioanalytic altern. Leptin rec. assay dispense step for adding Coelenterazine Inj. #2 30 µL Medium speed By well
73
Bioanalytic altern. Leptin rec. assay delay step allowing the Coelenterazine to enter the cells 5 s By well
74
Bioanalytic altern. Leptin rec. assay measurement 1 s 1 st emission filter 480 nm (Rluc signal) 2 nd emission filter 530 nm (YFP signal) By well
75
Bioanalytic Kinetic BRET assay Repeated operation mode for kinetic reactions over several minutes 9 wells manual substrate and agonist addition
76
Bioanalytic Kinetic BRET assay Plate selection 9 wells to be measured
77
Bioanalytic Kinetic BRET assay 2 Luminescence operations Define number of plate repeats Ratio YFP/Rluc will automatically be calculated as LB4
78
Bioanalytic Kinetic BRET assay
79
Bioanalytic Kinetic BRET assay
80
Bioanalytic Kinetic BRET assay
81
Bioanalytic end of part 1
82
Bioanalytic Mithras – unique features DOPS – optical system Photomultipliers Crosstalk reduction Plate height adjustment JET Reagent injectors
83
Bioanalytic DOPS Unique optical design: Dedicated Optical Path System (DOPS)
84
Bioanalytic DOPS
85
Bioanalytic DOPS
86
Bioanalytic DOPS
87
Bioanalytic Photomultipliers Highest quality: Stringent selection Single Photon Counting
88
Bioanalytic PMTs - Selection Stringent selection procedure Low & stable background Blue/green/red efficiencies Long term stability At various temperatures
89
Bioanalytic PMTs - Selection
90
Bioanalytic PMTs – Photon Counting
91
Bioanalytic PMTs – Photon Counting Photon Counting Current Measurement 10 100 1000 10000 100000 1000000 10000000 1E-181E-171E-161E-151E-141E-131E-121E-111E-101E-091E-08 ATP [moles] Relative Light Units/s [RLU/s]
92
Bioanalytic PMTs – Current mode Light Level Output Result Low gain Mid gain High gain Switching points
93
Bioanalytic PMTs – Photon Counting Advantages of Photon Counting No need to calibrate No need to set HV range Single Dynamic range (no gain settings) More stable backgrounds Improved sensitivity Instrument is stable over years
94
Bioanalytic PMTs – Stability Mithras
95
Bioanalytic Cross-Talk Reduction Patented design to eliminate signals from not-measured wells Aperture wheel with 3 positions for 96, 384 and 1536 well sizes respectively Positioned automatically according to the plate format selected
96
Bioanalytic Cross-Talk Reduction
97
Bioanalytic Crosstalk (X-talk) spillover of light between wells constant signal S m signals in neighbour wells S d diagonal position S a adjacent position CT a = S a / S m CT d = S d / S m all signals background corrected
98
Bioanalytic Crosstalk Reduction
99
Bioanalytic Plate Height Adjustment Detects plate height automatically while plate is moved in Adjusts and minimizes „gap“ between plate surface and detection optics automatically No need to measure or inquire for plate height dimensions
100
Bioanalytic Reagent Injectors JET injection with bellow- type reagent injectors out in
101
Bioanalytic Reagent Injectors JET injection technology Located in reading positions 10 to 100 µl Injection into 384 well plates possible High precision & accuracy better 98%
102
Bioanalytic Reagent Injectors 300 msec
103
Bioanalytic Reagent Injectors
104
Bioanalytic Reagent Injectors
105
Bioanalytic Reagent Injectors Average precision: 99.67 % Average accuracy: 99.41 %
106
Bioanalytic Reagent Injectors Specific procedure for priming: „EXTENDED ECONOMY PRIME“ Efficient homogeneous filling Saving of reagents Incremental filling of the bellow combined with vibrations
107
Bioanalytic Reagent Injectors JET injector „dead volumes“ are actual working volumes, e.g. 1 mL in Centro syringe type dispensers need to flush at least 5 times their „dead volume“ to get homogeneous filling
108
Bioanalytic Reagent Injectors CV: 3.38 %
109
Bioanalytic Time-Resolved Fluorescence
110
Bioanalytic HTRF – calc. reader evaluat.
111
Bioanalytic HTRF – calc. reader evaluat.
112
Bioanalytic HTRF – calc. reader evaluat.
113
Bioanalytic HTRF – calc. reader evaluat.
114
Bioanalytic HTRF – calc. reader evaluat.
115
Bioanalytic HTRF – calc. reader evaluat.
116
Bioanalytic HTRF – calc. reader evaluat.
117
Bioanalytic HTRF – calc. reader evaluat.
118
Bioanalytic HTRF – calc. reader evaluat.
119
Bioanalytic HTRF – calc. reader evaluat.
120
Bioanalytic HTRF – calc. reader evaluat.
121
Bioanalytic HTRF – calc. reader evaluat.
122
Bioanalytic HTRF – calc. reader evaluat.
123
Bioanalytic Summary of Applications ApplicationRead-out Calcium MonitoringAequorin Luminescence Fura 2, Indo 1 Fluorescence Cell ViabilityATP/Luciferase Luminescence ToxicityResorufin Fluorescence ProteasesFluorescence TR-FRET Protein-protein interactionBRET AlphaScreen™ FRET / TR-FRET Protein quantificationNanoOrange Fluorescence Bradford Absorbance DNA quantificationPicoGreen Fluorescence
124
Bioanalytic Summary of Applications ApplicationRead-out ProliferationFormazan Absorbance ATP/Luciferase Luminescence Reporter GeneLuciferase Luminescence GFP Fluorescence KinasesFluorescence Polarisation Luminescence TRF / TR-FRET ImmunoassaysHRP Luminescence HRP Absorbance TRF / TR-FRET PhagocytosisLuminol Luminescence AmplexRed Fluorescence
125
Bioanalytic Summary of Applications ApplicationRead-out Functional GPCRBRET IP 3 TR-FRET cAMP AlphaScreen Ca ++ Luminescence Ca ++ Fluorescence CaspasesLuminescence Fluorescence TRF /TR-FRET Receptor-Ligand BindingFluorescence Polarisation TRF / TR-FRET NAD(P)HAbsorbance
126
Bioanalytic Increasing Throughput
127
Bioanalytic Increasing Throughput LB 930 BUTLER plate handling robot can be used with Centro and Twinkle, too two models: BUTLER 20 for 20 microplates BUTLER, universal base plate, 2 stackers, HTTL BUTLER 100 for 100 microplates BUTLER, universal base plate, 6 stackers, HTTL LB 931 Stacker unit 25 plate capacity 50 plate capacity
128
Bioanalytic Good to Know Selecting Filters Selecting Microplates Cleaning Injectors Priming Injectors 21 CFR part 11
129
Bioanalytic Selecting filters Does the filters’ transmission spectra fit with the label/fluorophore in question? Should the filter be broad or narrow? as a general rule, narrow filters should be used in photometric applications (absorbance measurements) otherwise, broad filters can/should be used with broad filters the background level can increase and destroy the results ! Is the filters’ blocking level good enough? the blocking level should be at least 10 -4
130
Bioanalytic FITC excitation spectra…
131
Bioanalytic FITC emission spectra…
132
Bioanalytic FITC excitation & emission
133
Bioanalytic Selecting filters Excitation and emission filter pairs are not to overlap with their transmission spectra!
134
Bioanalytic Selecting Filters Rule of thumb: CWL >= 0.85 * (FWHM ex + FWHM em )
135
Bioanalytic Selecting filters Twinkle eliminates scattered light by second lens and aperture Angular light can pass interference filters -> cut-off shifted to lower wavelengths ! Select emission filter in Mithras with a CWL at even higher wavelengths missing in Mithras
136
Bioanalytic Selecting filters Fluorophores list
137
Bioanalytic Selecting microplates Absorbanceblack clear-bottom Fluorescenceblack Luminescencewhite BRETwhite Fluo. Polarisationblack Time-Res. Fluo.Black/white AlphaScreenwhite
138
Bioanalytic Selecting microplates Clear bottom microplates OK for absorbance Only when cell growth needs to be monitored before or after measurement Increase crosstalk (luminescence) Increase background due to light scatter (fluorescence)
139
Bioanalytic Selecting microplates Berthold plate descriptions
140
Bioanalytic Cleaning Injectors When? When changing reagents At the end of a measuring session After longer periods of non-activity Before starting a measuring session
141
Bioanalytic Cleaning Injectors How? Access the INSTRUMENT menu Select WASH Proceed as prompted
142
Bioanalytic Cleaning Injectors What to use? Solutions recommended by reagent manufacturer De-ionized water 40-70 % EtOH Mild acids or bases Berthold CLEANIT 45218
143
Bioanalytic Priming Injectors When? Before starting a measuring session When changing reagents
144
Bioanalytic Cleaning Injectors How? Access the INSTRUMENT menu Select PRIME Proceed as prompted
145
Bioanalytic Cleaning Injectors What to use? Prime lines with de-ionized water first Next, prime with reagents
146
Bioanalytic Kinetics mode “Kinetics” for short kinetics
147
Bioanalytic Kinetics mode “Repeated” for long kinetics
148
Bioanalytic Kinetics mode
149
Bioanalytic Kinetics mode Multiple calculation posibilities
150
Bioanalytic Mikrowin 21 CFR part 11 21 CFR part 11 compliancy - Advanced I or II ! controlled access system: user name & password audit trail: log file data files can be printed in human readable form data and parameter files can be protected user name and date/time stamps in data files documentation according to ISO 9001
151
Bioanalytic 21 CFR Users with password access
152
Bioanalytic 21 CFR Log file
153
Bioanalytic 21 CFR Printability of data files
154
Bioanalytic 21 CFR Protection of data and parameter files
155
Bioanalytic 21 CFR user name & date/time stamps in data files
156
Bioanalytic Questions?
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.