BME100 s2014:W Group5 L5

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Lab Write-Up 1 | Lab Write-Up 2 | Lab Write-Up 3
Lab Write-Up 4 | Lab Write-Up 5 | Lab Write-Up 6
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OUR TEAM


Name: Garrett Sciascia
Role: Mad Scientist
Name: Juan Bahena
Role: OpenPCR Technician
Name: Blake Marx
Role: WetWare Correspondent
Name: Danielle Hallaran
Role: Data Collection
Name: Naomi Walliman
Role: Team Manager

LAB 5 WRITE-UP

Background Information

SYBR Green Dye
A fluorescent DNA dye that binds all dsDNA and is measured by the change in fluorescence throughout. The dye is used in the PCR reaction in order to detect double stranded DNA. This allows experimenters to quantify the amount of DNA being produced.


Single-Drop Fluorimeter
An instrumentation that is able to detect fluorescence. The quantity is proportional to the number of molecules being deteced.


How the Fluorescence Technique Works
A technique that detects light in a molecule much similar to a spectrometer. It uses an ultraviolet light and excites the electrons causing the molecules to emit light.



Procedure

Smart Phone Camera Settings

First Phone:

  • Type of Smartphone: iPhone 5s
    • Flash: Off
    • ISO setting: 800
    • White Balance: Auto
    • Exposure: Highest Setting
    • Saturation: Highest Settings
    • Contrast: Lowest Settings


Additional Phone:

  • Type of Smartphone: Galaxy Samsung S3
    • Flash: Off
    • ISO setting: 800
    • White Balance: Auto
    • Exposure: Highest Setting
    • Saturation: Highest Setting
    • Contrast: Lowest Setting


Calibration

First turn on the Blue LED switch in order to activate the excitation light. Also make sure the camera is open with the settings listed above. From there place the pone on the cradle with 90 degree angle from the slide. Make sure to adjust the height of phone and/or fluorimeter in order to take pictures of the drops. Lastly, the cradle should be as close to the fluorimeter as possible with having a clear picture still.

  • Distance between the smart phone cradle and drop =

4.5 cm


Solutions Used for Calibration

Initial Concentration of 2X Calf Thymus DNA solution (micrograms/mL) Volume of the 2X DNA solution (μL) Volume of the SYBR GREEN I Dye solution (μL) Final DNA concentration in SYBR Green I solution (μg/mL)
5 80 80 2.5
2 80 80 1
1 80 80 0.5
0.5 80 80 0.25
0.25 80 80 0.125
0 80 80 0


Placing Samples onto the Fluorimeter

  1. [Instructions: Step one, in your OWN words]
  2. [Instructions: Step two, in your own words]
  3. [Instructions: Step three, in your own words]
  4. [Instructions: Step etc., in your own words]


Data Analysis

Representative Images of Samples

[Instructions: Show an IMAGE where you drew a circle around the droplet with the freehand tool for a sample with no DNA]

[Instructions: Show an IMAGE where you drew a circle around the droplet with the freehand tool for a sample with DNA (positive signal)]


Image J Values for All Samples

PCR Product TUBE LABEL Volume of the DILUTED PCR Product solution (µL) Volume of the SYBR GREEN I
Dye solution (µL) INTDENS VALUES BASED ON 3 SEPARATE DROP MEASUREMENTS AVERAGE INTDENS VALUE
A1 80 80 2716687 3229970 3340085 3095581
A2 80 80 1451878 2568844 8446955 4155892
A3 80 80 3862714 8011744 1600043 4491500
B1 80 80 9856858 5058003 3108259 6007707
B2 80 80 6862644 5685363 6783718 6443908
B3 80 80 6287959 7119245 9598254 7668486
+ 80 80 11779932 7973600 11270538 10341357
- 80 80 4371681 2482949 1977785 2944138

Fitting a Straight Line

[Instructions: Place an IMAGE of your Excel plot with a line of best fit here. See worksheet page 9]