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</div> | </div> | ||
<p><b>Our first day in the laboratory!</b></p></div> | <p><b>Our first day in the laboratory!</b></p></div> | ||
− | <div class="collapsible-body"><span> <b>Goal:</b> Incubate the Escherichia coli (E. coli) samples which carry pgRNA and pdCas9 on agar plates with antibiotics. | + | <div class="collapsible-body"><span> <b>Goal:</b> Incubate the Escherichia coli (E. coli) samples which carry pgRNA and pdCas9 on agar plates with antibiotics.<br> |
<b> Preparation of LA- medium </b> <br> | <b> Preparation of LA- medium </b> <br> | ||
Line 113: | Line 113: | ||
Two different agar plates were made – one type contains ampicillin (AMP) while the other type contains chloramphenicol (CM), and were prepared after the following recipe: | Two different agar plates were made – one type contains ampicillin (AMP) while the other type contains chloramphenicol (CM), and were prepared after the following recipe: | ||
+ | <br> | ||
<br> | <br> | ||
LA- medium with AMP: | LA- medium with AMP: | ||
Line 122: | Line 123: | ||
<li>0.5mL AMP (50mg/mL)</li> | <li>0.5mL AMP (50mg/mL)</li> | ||
</ul> | </ul> | ||
− | + | ||
LA-medium with CM: | LA-medium with CM: | ||
<ul> | <ul> |
Revision as of 14:13, 9 July 2018
Notebook
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Week25
NOTE TITLE
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Jun18
Note title
Test. -
Jun19
Note title
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Jun20
Our first day in the laboratory!
Goal: Incubate the Escherichia coli (E. coli) samples which carry pgRNA and pdCas9 on agar plates with antibiotics.
Preparation of LA- medium
LA- medium (1.5%) were made after the following recipe, and autoclaved for 20min at 121°C.- 1L Distilled water
- 5g Yeast extract
- 10g Tryptone
- 5g NaCl
- 15g Agar
Agar plates with antibiotics
Two different agar plates were made – one type contains ampicillin (AMP) while the other type contains chloramphenicol (CM), and were prepared after the following recipe:
LA- medium with AMP:- 0.5L LA-medium
- 0.5mL AMP (50mg/mL)
- 0.5L LA-medium
- 0.5mL CM (35mg/mL)
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Jun21
Inoculation of E.coli
Goal: Inoculate a colony from each agar plate which were prepared from the previous day, in LB- medium with antibiotics.
Procedure
One colony of pgRNA- and pdCas9- bacteria grown overnight on agar plates were picked and inoculated in LB-media (25mL) with AMP (25μL) and CM (25μL), respectively. The cell cultures were incubated at 37℃ in a shaking incubator at 204rpm.
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Jun22
Isolation and verification of pgRNA and pdCas9
Goal: Isolate and verify that the E.coli carry pgRNA and pdCas9.
Plasmid isolation
pgRNA and pdCas9 were isolated from the incubated bacteria prepared yesterday (June 21) by following the protocol of ZR Plasmid Miniprep Kit:
- 1mL of each cell culture (which either carry pgRNA or pdCas9) were transferred to eppendorf tube and centrifugated for 20s at 16000g
- The supernatant was discarded, while the pellet was resuspended in buffer
- Lysing buffer was added to the sample and carefully mixed in 2min
- Neutralizing buffer was added to the sample, and mixed until the colour of the solution became yellow
- The solution was centrifugated for 2min at 16000g
- The supernatant was collected and transferred to column in a collection tube, and centrifugated for 30s at 16000g
- The supernatant in the collection tube was discarded
- Endo-wash buffer was added to the column and centrifugated for 1min at 16000g
- Plasmid- wash buffer was added to the column and centrifugated for 1 min at 16000g
- The solution in the collection tube was discarded, while the column with plasmids was transferred to a new collection tube
- The plasmids in the column were eluted by adding 30μL distilled water, and centrifugated for 30s in 16000g
Determine plasmid concentration and purity
The concentration of plasmids and the purity of each sample were determined by using Nanodrop. Test
Week26Note title
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Jun25
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Jun26
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Jun27
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Jun28
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Jun29
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Week27Note title
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Jul1
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Jul2
InterLabs Study
Calibration 1 and 2 for the InterLabs Study. -
Jul3
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Jul4
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Jul5
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Week28Note title
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Jul9
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Jul10
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Jul11
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Jul12
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Jul13
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Week29Note title
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Jul16
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Jul17
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Jul18
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Jul19
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Jul20
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Week30Note title
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Jul23
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Jul24
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Jul25
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Jul26
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Jul27
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Week31Note title
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Jul30
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Jul31
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Aug1
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Aug2
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Aug3
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Week32Note title
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Aug7
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Aug8
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Aug9
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Aug10
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Week33Note title
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Aug13
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Aug14
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Aug15
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Aug16
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Aug17
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Week34Note title
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Aug20
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Aug21
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Aug22
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Aug23
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Aug24
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