cell culture techniques
DESCRIPTION
Cell Culture Techniques. Balazs Veres. I . Cell Types II . Introduction to Cell Culture Lab III . Techniques. Content s. Prim a r y cultures Continuous cultures Normal Immortalized Spontaneous Transformation Transfect ion Somatic Cell Fusion (Hybridomas, Hybrids). Cell lines - PowerPoint PPT PresentationTRANSCRIPT
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Cell Culture Cell Culture TechniquesTechniques
Balazs VeresBalazs Veres
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ContentContentss
II. Cell. Cell Types Types IIII. Introduction . Introduction toto Cell Cell
Culture LabCulture Lab IIIIII. Techniques. Techniques
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I. I. CellCell Types Types
PrimPrimaarryy cultures cultures ContinuousContinuous cultures cultures
NormalNormal ImmortalizedImmortalized
SpontaneousSpontaneous TransformationTransformation
TransfectTransfectionion Somatic Cell FusionSomatic Cell Fusion
(Hybridomas, (Hybridomas, Hybrids)Hybrids)
Cell linesCell lines Adherent Adherent SuspensionSuspension
Cells from ATCC Cells from ATCC and ETCC and ETCC
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PrimPrimaarryy CCultureulture Tissue preparationTissue preparation
directly directly from young from young animal, or isolation of animal, or isolation of cells from blood, cells from blood, intraperitoneal intraperitoneal fluid, fluid, etc.etc.
Tissue dissociation Tissue dissociation Dissection thenDissection then
HomogenizHomogenizationation with with Knife Knife or or BlenderBlender
Enzymatic Enzymatic DigestionDigestion ((collagenase, papain, collagenase, papain, trypsine)/cleaving of DNA trypsine)/cleaving of DNA of damaged cell with of damaged cell with DNaseDNase
DissociationDissociation of cells in of cells in medium and selection of medium and selection of organicorganic cell typescell types
Knife Blender
CO2 Incubator
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Secondary culture, Secondary culture, extended cultureextended culture
Secondary culture:Secondary culture: From primary cultures, after 1 From primary cultures, after 1 passage.passage.
Extended culture (multipassage culture, cell Extended culture (multipassage culture, cell strain):strain): From primary cultures after several passages. From primary cultures after several passages.
Restricted lifespan (40-100 passages), l Restricted lifespan (40-100 passages), limited imited growth potential. growth potential.
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ContinuousContinuous culture culture
Normal cell linesNormal cell lines They were They were
spontaneousspontaneouslyly immortalized.(e.g.: immortalized.(e.g.: Cardio-mCardio-myyocytocyteses from from rat)rat)
ImmortalizedImmortalized TransfectedTransfected with some with some
sort of oncogene; SV40 sort of oncogene; SV40 (Simian virus) Large T (Simian virus) Large T antigen antigen (T IDBL)(T IDBL)
Tumor cells (e.g.: Tumor cells (e.g.: Human cervix Human cervix carcinomas: HeLacarcinomas: HeLa 1952 1952) )
Hybridomas Hybridomas
H9c2
HeLa
Cell line: genetically homogeneous, everlasting lifespan
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Growth-curve of cultured cells
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HybridomasHybridomas
Cell fusion of Cell fusion of
HGPRTHGPRT and TK and TK-/--/- myeloma and myeloma and B-B-cells from cells from immunized animal immunized animal
Selection of Selection of hybridomas in hybridomas in HATHAT ((HHypoxanthine, ypoxanthine, AAminopterine and minopterine and TThymidine)hymidine) medium medium
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Metabolic pathways relevant to hybrid selection in medium containing hypoxanthine, aminopterine and thymidine (HAT medium).
When the main synthetic pathways are blocked with the folic acid analogue aminopterine (*), the cell must depend on the “salvage” enzymes HGPRT and TK (thymidine kinase). HGPRT (-) cells cannot grow in HAT medium unless they are fused with HGPRT (+) cells.
Hybrid selectionHybrid selection
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Effect of HAT-medium Effect of HAT-medium SelectionSelection
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Ribose-5-P PRPP IMP
1) adeniloszukcinát xantilát (XMP)
adenilát (AMP) guanilát (GMP)
ADP GDP
ATP GTP
3) PRPP
adenin hipoxantin
(uracil) guanin
adenin-(uracil)
foszforibozil- HGPRT
transzferáz
AMP IMP
(UMP) PPi GMP
2)
HCO3- karbamil-P + Asp
karbamil-aszpartát
uridilát (UMP) UDP UTP
CTP
4) kinázok
uridin UMP
citidin CMP
adenozin AMP
guanozin GMP
timidin TMP
ATP ADP
Purine and pirimidine nucleotide biosynthesis
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Production of Polyclonal Production of Polyclonal and Monoclonal antibodiesand Monoclonal antibodies
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Cell linesCell lines
Adherent (WRL-68, Adherent (WRL-68, HepG2, HeLa etc.)HepG2, HeLa etc.)
Suspension Suspension (Jurkat)(Jurkat)
Cells from ATCC Cells from ATCC and ETCCand ETCC
JurkatWRL-68
HeLa HepG2
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Online Order of Cell Online Order of Cell LinesLines
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MediumMedium: : salt, glucose, essencial amino acids, vitamines, salt, glucose, essencial amino acids, vitamines,
buffer, phenol red indicator, serum, antibioticsbuffer, phenol red indicator, serum, antibiotics
EnvironmentEnvironment:: TemperatureTemperature: 37°C: 37°C High humidity High humidity 5% CO25% CO2
Cells in culture
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II. Introduction of Cell II. Introduction of Cell Culture LabCulture Lab(E(Equipmentquipment))
COCO22-thermostats-thermostats AirflowAirflow SolutionsSolutions DishesDishes FreezersFreezers Liquid nitrogen Liquid nitrogen CentrifugesCentrifuges
AutoclaveAutoclave Vacuum ovensVacuum ovens Cryotubes Cryotubes Microscopes Microscopes ELISA-readersELISA-readers
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COCO22 Incubators Incubators
Water Jacketed COWater Jacketed CO22 incubatorincubator
3 Gas/CO3 Gas/CO22 Incubator Incubator with RH Control with RH Control Precise control of Precise control of
Oxygen levels Oxygen levels combined with COcombined with CO22, N, N22 and RH ensure and RH ensure accurate conditions accurate conditions for applications such for applications such as, hypoxic cell studies as, hypoxic cell studies and cancer research.and cancer research.
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Laminar Flow BoxLaminar Flow Box
HEPA filter rated HEPA filter rated at 99.99% efficient at 99.99% efficient for 0.3 micron for 0.3 micron particulates. The particulates. The HEPA filtered air is HEPA filtered air is then directed then directed verticvertically across ally across the work surface. the work surface.
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DishesDishes
DishesDishes Multiwell platesMultiwell plates FlasksFlasks Flasks on slideFlasks on slide
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FreezersFreezers
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CentrifugesCentrifuges
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AutoclavesAutoclaves
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Vacuum OvensVacuum Ovens
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MicroscopesMicroscopes
Cell growth
Contamination Contamination
Cell countingCell counting
DyeDye
Transfection efficiencyTransfection efficiency
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ELISA readersELISA readers
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FACSFACS
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II. Introduction of Cell II. Introduction of Cell Culture LabCulture Lab(Culture) (Culture)
Growth of the cells in adequatGrowth of the cells in adequatee media media with serumwith serum (FCS(FCS/FBS/FBS) and antibiotics ) and antibiotics and and antimycotics (chemically defined serum-antimycotics (chemically defined serum-free media)free media)
Environment:Environment: Temperature: 37°CTemperature: 37°C (34 °C, 41 °C) (34 °C, 41 °C) HighHigh humidityhumidity 5% CO5% CO22
Split: Trypsin-EDTASplit: Trypsin-EDTA Count of Cells (Thrypan Blue)Count of Cells (Thrypan Blue)
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III. TechniquesIII. Techniques Metabolic activity (MTT)Metabolic activity (MTT) Detection of Apoptosis and NecrosisDetection of Apoptosis and Necrosis Western blot from cells Western blot from cells TransfectionTransfection Gene deletionsGene deletions Clinical Application of cultured Human Stem Clinical Application of cultured Human Stem
CellsCells Flow Cytometric Methods Flow Cytometric Methods FISH-probes FISH-probes DNA ArrayDNA Array
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Metabolic activityMetabolic activity(MTT, viability assay)(MTT, viability assay)
Seed the cellsSeed the cells into 96-well plates at a starting into 96-well plates at a starting density of 10 celldensity of 10 cellss/well and culture overnight in /well and culture overnight in humidified 5 % COhumidified 5 % CO22 atmosphere at 37 °C. atmosphere at 37 °C.
Treat the cellsTreat the cells modifying their viability the modifying their viability the following day.following day.
ReReplaceplace medium medium to mediumto medium containing containing 0.5% water 0.5% water soluble mitochondrial dye, soluble mitochondrial dye, (3-(4,5-dimethylthiazol-2-(3-(4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (yl]-2,5-diphenyl-tetrazolium bromide (MTTMTT+)+). .
IncubateIncubate 3 hours and 3 hours and solubilizesolubilize the water insoluble the water insoluble blue formasan dye by 10 % SDS in 10mM HCl.blue formasan dye by 10 % SDS in 10mM HCl.
DetermineDetermine the optical density by an ELISA reader the optical density by an ELISA reader at at 550 nm wavelength550 nm wavelength..
4
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0
20
40
60
80
100
Ctrl. 0 0,1 0,5 1 2
M HO-3089
Su
rviv
al
(%)
Effect of HO-3089 (Novel PARP-inhibitor) on WRL-68 in Oxidative
Stress
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Detection of ROSDetection of ROS
Count cellsCount cells Treatment (eg: HTreatment (eg: H22OO22, PARP inhibitor), PARP inhibitor) C-400 dye binds to ROS: fluorescence signalC-400 dye binds to ROS: fluorescence signal ELISA readerELISA reader
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Detection of Apoptosis and Detection of Apoptosis and NecrosisNecrosis
Activity of CaspaseActivity of Caspase 3 3 and Caspase 8and Caspase 8 Release of Cytochrome c and AIFRelease of Cytochrome c and AIF Fluorescence dyesFluorescence dyes
Hoechst 33342Hoechst 33342 Annexin VAnnexin V PropidPropidiium iodideum iodide RhodamineRhodamine
DNA LadderingDNA Laddering Induction and protection Induction and protection PARP PARP
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Apoptosis signalling via the Fas Apoptosis signalling via the Fas receptorreceptor
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Activation and inhibition of Activation and inhibition of ApoptosisApoptosis
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The RolThe Rolee of mitochondria in of mitochondria in apoptosisapoptosis
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Caspase CascadeCaspase Cascade
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FIGURE 3
- + - + - - + +
cyt-c
cyt-c
Ca2+
CsA
AIF
AIF
EndoG
EndoG
P
S
S
P
S
P
Protein release from Protein release from mitochondriamitochondria
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To investigate the DNA To investigate the DNA fragmentation, the fragmentation, the extracted DNA has to extracted DNA has to run on 1run on 1..5% agarose gel.5% agarose gel.
DNA fragments show DNA fragments show ‘ladder-pattern’.‘ladder-pattern’.
DNA LadderingDNA Laddering
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DNA LadderingDNA Laddering
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Fluorescent dyesFluorescent dyes I. I. Hoechst 33342:blueHoechst 33342:blue
Selective nuclear dyeSelective nuclear dye Chromatin Chromatin
condensation, condensation, fragfragmmentationentation
Rhodamine 110: Rhodamine 110: greengreen
Bis-L-asparic acide Bis-L-asparic acide amide (substrate by amide (substrate by caspase 3): greencaspase 3): green
TMRE: polarization TMRE: polarization of mitochondria: redof mitochondria: red
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Fluorescent dyesFluorescent dyes II. II.
Propidium iodidePropidium iodide: : Late-stage Late-stage apoptotic and apoptotic and necrotic cells: necrotic cells: redred
YO-PRO-1YO-PRO-1: Viable : Viable cell nuclei cell nuclei greengreen
Annexin VAnnexin V: early-: early-stage apoptotic stage apoptotic cells: cells: greengreen
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Induction and Protection of Induction and Protection of ApoptosisApoptosis
Induction: Induction: Hydrogen peroxideHydrogen peroxide EtoposideEtoposide Death domainDeath domains: s: TNFTNF, , FASFAS, TRAIL, TRAIL BADBAD
Protection:Protection: BCL-2 familyBCL-2 family IAPIAP Inhibition of PARPInhibition of PARP HSP27, 70, 90HSP27, 70, 90
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PARPPARP poly-poly-((ADP-ryboseADP-rybose))--polymerasepolymerase
Nuclear enzymeNuclear enzyme Structure of PARPStructure of PARP 11stst activator of PARP are ssDNA- activator of PARP are ssDNA-
breaksbreaks The rolThe rolee of PARP in necrosis and of PARP in necrosis and
apoptosis or repair-mechanismapoptosis or repair-mechanism The rolThe rolee of of poly(ADP-ribose) poly(ADP-ribose)
glycohydrolase (glycohydrolase (PARGPARG) )
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-R-P-P-R-R-P-P-R-R-P-P-R-R-P-P-R
Ad
PARP Glu
AdN
CONH2
Ad
R-P-P-R-R-P-P-R
Ad Ad
+
Nic
Nic-R-P-P-R
Ad
(NAD+)
Reaction catalyzed by
PARP
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Gene transfer Gene transfer 1. Calcium phosphate: DNA-calcium phosphate precipitatum
complex
2. Alkali complex: DNA-protein complex
3. Liposome: DNA in lipid membrane-bounded bodies
4. Electroporation
5. Magnetofection: magnetic particles-DNA complex
6. Transient (transfected DNA does not incorporate to the genomic DNA); stable transfection (selection; G418-neomycin).
7. Viral: Adeno, retro, lenti and adeno-associated viruses; „new” cell-line, incorporated DNA.
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TransfectionTransfection Plasmide: double stranded circular Plasmide: double stranded circular
DNADNA 3-20 kb., hundreds of copies3-20 kb., hundreds of copies Heavy metal, antibiotic resistencyHeavy metal, antibiotic resistency MCS: Multiple Cloning SiteMCS: Multiple Cloning Site Gene of interestGene of interest
pEGFP without NLS
pEGFP with NLS
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RNA interferencyRNA interferency
RNAiRNAi: : RNA-guided regulation of RNA-guided regulation of genegene expressionexpression in which in which double-strandeddouble-stranded ribonucleicribonucleic acidacid inhibits the inhibits the expressionexpression of of genesgenes with with complementarycomplementary nucleotidenucleotide sequences.sequences. DNADNA→ transcription→ → transcription→ mRNAmRNA→ translation→ protein→ translation→ protein
siRNAsiRNA Dicer RNADicer RNA (RNase III.) (RNase III.) siRNA cassettesiRNA cassette
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Mechanism for how siRNA Mechanism for how siRNA worksworks
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Therapeutic approaches
• Chromosoma methylation• Diabetes• Viral infection• HIV• Tumor therapy:
β-cathenine: increased cell growth (tumors)Supressed β-cathenine: tumor inhibition
SIDE EFFECTS!!!
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Clinical Application of Clinical Application of cultured Human Stem Cellscultured Human Stem Cells
Not only human embryonic stem Not only human embryonic stem cells can be cultured in the cells can be cultured in the laboratory.laboratory.
But cells could be manipulated to But cells could be manipulated to produce cultures and characteristics produce cultures and characteristics of particular tissue.of particular tissue.
Possibile solution for damage and Possibile solution for damage and ageing (Parkinson’s disease, ageing (Parkinson’s disease, diabetes)diabetes)
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FISH FISH (Fluorescence in situ (Fluorescence in situ
Hybridization)Hybridization) To detect and localize the presence or To detect and localize the presence or
absence of specific absence of specific DNADNA sequencessequences on on chromosomeschromosomes. .
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ApplicationsApplications
Two copies of chromosome 3 (red), four copies of chromosome 7 (green), five copies of chromosome 17 (aqua) and one copy of p16 gene (gold).
A metaphase cell positive for the bcr/abl rearrangement using FISH. The chromosomes can be seen in blue. The chromosome that is labeled with green and red spots (up left) is the one where the wrong rearrangement is present.
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Flow CFlow Cyytometrtometryy Counting, examining and sorting microscopic particles suspended in a stream of fluid. Physical and/or chemical characteristics of single cells. Forward Scatter or FSC correlates with the cell volume. Side Scatter or SSC depends on the inner complexity of the particle (i.e. shape of the nucleus, the amount and type of cytoplasmic granules or the membrane roughness).
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Flow Cytometric MethodsFlow Cytometric Methods
Separation of labeled cells
Clinical applications
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Analysis of a marine sample of photosyntetic picoplankton by flow cytometry showingthree different populations (Prochlorococcus, Synechococcus, picoeukaryotes).