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Basic technique Training and and Practice  Pipetting and transfer of fluid  Observation of cultured cells  Aseptic technique: preparation of mediums.

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Presentation on theme: "Basic technique Training and and Practice  Pipetting and transfer of fluid  Observation of cultured cells  Aseptic technique: preparation of mediums."— Presentation transcript:

1 Basic technique Training and and Practice  Pipetting and transfer of fluid  Observation of cultured cells  Aseptic technique: preparation of mediums and buffers  Feeding a culture  Washing and sterilization of water  Counting cells by haemacytometer  Subculture of continuous cell line– monolayer culture  Construction and analysis of growth curve

2 Advanced Techniques Detection of mycoplasma Cell line characterization and analysis Primary Culture Cytotoxicity assay

3 Exercise 1. Aseptic Technique Purpose: Practice in transferring fluid from one bottle to another Exercise 2. Aseptic Technique Purpose: Preparation of Buffers and Culture medium and Procedures : 1.Preparation of 10XPBX 2.Preparation of DMEM+ FBS+ Penicillium/Streptomycin 3.Sterilization of bottles and pipettes and equipments

4 D-PBSA g/L final concentration KCl 0.2 2.68 KH2PO4 0.2 1.47 NaCl 8 136.9 Na2HPO4.7H2O 2.2 8.06 Make 500ml/bottle, and autoclave before use

5 1X DMEM growth medium 1 pack DMEM from sigma add 1000 ml DDW  filter through 0.45um filter  Add 450ml/bottle  Add 50ml FBS, 5 ml P/S

6 http://www.youtube.com/watch?v=4mKhULnxqcw&feature=related Aseptic Technique http://www.youtube.com/watch?v=_fjZ-MHV22w Cell Culture Basics

7 Exercise 3. Cell Line maintenance and cell passage

8 General procedure for the cell culture laboratory 1. Thawing cells Culture of cell lines( frozen stock)  Thaw  Cell line maintenance

9 Day 1 frozen culture( -190 o C) 1 ml in frozen medium  37 o C, thaw  Add, 10ml culture medium( DMEM+FBS+p/s)  1200 rpm, 5 min  Remove suspension  resuspend cell pellet with 5 ml growth medium  plating 10 6 cells/ml

10 Day 2 Culture( cells checked under inverted microscope)  Remove culture medium, Replace with fresh culture medium (3ml)

11 Day3 subculture  remove culture medium  cells washed with 2ml CMF/PBS  remove PBS  cells, trypsinize with 1x trypsin( 0.025%) ( flush cell by pipetting repeatly)  cells taken into 15ml centrifuge tube  1200 rpm, centrifuge, 10min  trypsin, removed add 5 ml DMEM  cells diluted for plating( 1/4 dilution) in 6 mm cullture dish  37 o C, CO2 incubator

12 2 to 3 days later cells trypsinize with 1x tyrpsine ( protocols follow the previous page )  cells, resuspend with 5 ml DMEM  cell, 10 ul was taken+ 10ul trypane blue  cell counting

13 haemacytometer 10 ul cellwas taken+ 10ul trypane blue

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15 (N1+N1)/2 /4 *2 * 10 4 =cells/mlCell number= N1 N2

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19 http://www.youtube.com/watch?v=-cGPS5ryg14&feature=related Counting cells

20 Cell freezing ( 10 6 cells /ml) confluent cultures  cells trypsinized  cell counting  cell pellet resuspend in frozen medium  -20 o C( 2-4hrs)  -70 o C(2-4hrs)  -196 o C ( DMEM+10%DMSO)

21 Gradually Lower temperature to -20 o C in ( 2-4hrs)  -70 o C(2-4hrs)  -196 o C http://www.youtube.com/watch?v=ZtElKq85OuM&feature=related Freezing Cells

22 Cell lines: CHO Chinese Hamster Ovary 3T3 mouse fibroblast CT26 colon carcinoma cell line B16F1 melanoma MG-63 human osteosarcoma skHEPI Hepatoma STO mouse embryonic fibroblast HeLa cervical cancer C2C12 mouse fibroblast

23 http://www.youtube.com/watch?v=_fjZ-MHV22w Cell Culture Basics http://www.youtube.com/watch?v=gaG15lM1t5A&feature=related Passaging Cells http://www.youtube.com/watch?v=CCWrLUA6Qbg&feature=related Thawing Cells http://www.youtube.com/watch?v=ZtElKq85OuM&feature=related Freezing Cells http://www.youtube.com/watch?v=4mKhULnxqcw&feature=related Aseptic Technique http://www.youtube.com/watch?v=-cGPS5ryg14&feature=related Counting cells


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