ENVB 437 Lecture Notes - Lecture 18: Breastfeeding, Western Blot, Ribosomal Rna
Eukaryotic cells and viruses – lecture 18 (March 21st, 2018)
Slide 4
- Microarrays can be put on chips and use them to screen for diseases and conditions
Slide 5
- Specifically spot a gene sequence that we get with all of our genome sequences
o And we can know the location of all those genes by printing then in a specific location
- By measuring the ratio of the intensities, you can get a measurement of the transcription of this in the entire
cell
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Slide 6
- Extremely reproducible so if two different labs use these, results should be the same
Slide 7
- After amplification and purification can be printed on a slide with a printer
- You can modify the printer to print on a slide
o Using this technology, you can print easily 10k different probes on a slide
- Each base that is added, is added to a photoprotection group as well
o You can then de-protect different areas
- You apply a new mask and repeat the process over and over again and repeat the process for all the genes
Slide 10
- The major advantages:
o Reproducible – can share protocols
▪ Have confidence in the data that you get
o Since they are so widely distributed and used
- Disadvantages:
o Quality control (QC) is paramount to making good results
▪ They spot mismatch oligos, and if that lights up that means that QC is not very good
▪ The stringency of the washing solution is going to determine which of these sequences remain
present
Slide 11
- You get an idea of the quantity of the different transcripts that are being hybridized
Slide 13
- You have a scale to quantify
Slide 14
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Document Summary
Eukaryotic cells and viruses lecture 18 (march 21st, 2018) Microarrays can be put on chips and use them to screen for diseases and conditions. Specifically spot a gene sequence that we get with all of our genome sequences: and we can know the location of all those genes by printing then in a specific location. By measuring the ratio of the intensities, you can get a measurement of the transcription of this in the entire cell. Extremely reproducible so if two different labs use these, results should be the same. After amplification and purification can be printed on a slide with a printer. You can modify the printer to print on a slide: using this technology, you can print easily 10k different probes on a slide. Each base that is added, is added to a photoprotection group as well: you can then de-protect different areas.