Tag Archives: SsoFast EvaGreen Supermix

qPCRs – Ronit’s C.gigas ploidy/dessication/heat stress cDNA (1:5 dilution)

IMPORTANT: The cDNA used for the qPCRs described below was a 1:5 dilution of Ronit’s cDNA made 20181017 with the following primers! Diluted cDNA was stored in his -20oC box with his original cDNA.

The following primers were used:

18s

  • Cg_18s_F (SR ID: 1408)

  • Cg_18s_R (SR ID: 1409)

EF1 (elongation factor 1)

  • EF1_qPCR_5′ (SR ID: 309)
  • EF1_qPCR_3′ (SR ID: 308)

HSC70 (heat shock cognate 70)

  • Cg_hsc70_F (SR ID: 1396)
  • Cg_hsc70_R2 (SR ID: 1416)

HSP90 (heat shock protein 90)

  • Cg_Hsp90_F (SR ID: 1532)
  • Cg_Hsp90_R (SR ID: 1533)

DNMT1 (DNA methyltransferase 1)

  • Cg_DNMT1_F (SR ID: 1511)
  • Cg_DNMT1_R (SR ID: 1510)

Prx6 (peroxiredoxin 6)

  • Cg_Prx6_F (SR ID: 1381)
  • Cg_Prx6_R (SR ID: 1382)

Samples were run on Roberts Lab CFX Connect (BioRad). All samples were run in duplicate. See qPCR Report (Results section) for plate layout, cycling params, etc.

qPCR master mix calcs (Google Sheet):


RESULTS

No analysis here. Will analyze data and post in different notebook entry. This entry just contains the qPCR setup, resulting data, and a glimpse of how each primer performed.

Nothing is broken down based on sample ploidy or experimental conditions.

18s

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Amplication Plots

Melt Curves


DNMT1

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Amplication Plots

Melt Curves


EF1

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Amplication Plots – Manual Threshold (Linear)

Amplication Plots – Manual Threshold (Log)

Amplication Plots – Automatic Threshold (Linear)

Amplication Plots – Automatic Threshold (Log)

Melt Curves


HSC70

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Amplication Plots

Melt Curves


HSP90

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Amplication Plots

Melt Curves


Prx6

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Amplication Plots

Melt Curves

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qPCR – Ronit’s DNAsed C.gigas Ploidy/Dessication RNA with elongation factor primers

After I figured out the appropriate DNA and primers to use to detect gDNA in Crassostrea gigas samples, I checked Ronit’s DNased ctenidia RNA (from 20181016) for residual gDNA.

Elongation factor primers:

  • EF1_qPCR_5′ (SRID 309)
  • EF1_qPCR_3′ (SRID 310)

BB16 from 20090519 was used as a positive control.

Samples were run on Roberts Lab CFX Connect (BioRad). All samples were run in duplicate. See qPCR Report (Results section) for plate layout, cycling params, etc.

qPCR master mix calcs (Google Sheet):


Results

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

In the plots below, green is the positive control, blue are the samples, and red is the no template control (NTC).

Everything looks great! Nice, clean, gDNA-free RNA! Will proceed with reverse transcription.


Amplification Plots


Melt Curves

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qPCR – C.gigas primer and gDNA tests with 18s and EF1 primers

The [qPCR I ran earlier today to check for residual gDNA in Ronit's DNased RNA] turned out terribly, due to a combination of bad primers and, possibly, bad gDNA.

I tracked down some different primers for testing:

  • Cg_18s_1644_F (SRID 1168)
  • Cg_18s_1750_R (SRID 1169)
  • EF1_qPCR_5′ (SRID 309)
  • EF1_qPCR_3′ (SRID 310)

In addition to BB15 from 20090519, I decided to test out BB16 from 20090519 as a positive control.

Samples were run on Roberts Lab CFX Connect (BioRad). All samples were run in duplicate. See qPCR Report (Results section) for plate layout, cycling params, etc.

qPCR master mix calcs (Google Sheet):


Results

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Looks like the elongation factor (EF1) primers and BB16 gDNA as a positive control are the way to go.

In the plots below, the black lines are BB16, the green lines are BB15, and the red lines are no template controls (NTC).

The amplification plots show that the EF1 primers do not amplify with BB15, but do amplify with BB16 (black lines Cq ~34). The 18s primers amplify with both BB15 & BB16 (Cq ~16 & ~18, respecitively), but produce primer dimers (red lines in amplification and melt curve plots).


Amplification Plots


Melt Curves

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qPCR – Ronit’s DNAsed C.gigas Ploidy/Dessication RNA with 18s primers

After DNasing Ronit’s RNA earlier today, I needed to check for any residual gDNA.

Identified some old, old C.gigas 18s primers that should amplify gDNA:

  • gigas18s_fw (SRID 157)
  • gigas18s_rv (SRID 156)

Used some old C.gigas gDNA (BB15 from 20090519) as a positive control.

Samples were run on Roberts Lab CFX Connect (BioRad). All samples were run in duplicate. See qPCR Report (Results section) for plate layout, cycling params, etc.

qPCR master mix calcs (Google Sheet):


Results

qPCR Report (PDF):

qPCR File (PCRD):

qPCR Data (CSV):

Well, this primer set and/or the gDNA is not good. In the plots below, the positive control gNDA is in green, samples in blue, and no template controls (NTC) are in red.

Poor performance is most easily noticed when looking at the melt curves. They have multiple peaks, suggesting non-specific amplification, even in the positive control.

Additionally, although less evident from just looking at the plots, is the replicates are highly inconsistent. Although it’s possible that might be due to poor technique, it’s very unlikely.

Will have to identify different primers and/or positive control DNA.


Amplification Plots


Melt Curves

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qPCR – Jake’s O.lurida ctenidia 1hr post-mechanical stress DNased RNA

Ran qPCR on DNased RNA from earlier today to assess whether there was any residual gDNA after the DNase treatment with Oly_Actin_F/R primers (SR IDs: 1505, 1504).

Used 1μL from all templates.

All samples were run in duplicate.

Positive control was HL1 O.lurida DNA isolated by Jake on 20150323.

Cycling params:

  • 95C – 2.5mins
  • 40 cycles of:
    • 95C – 10s
    • 60C – 20s
  • Melt curve

Master mix calcs are here: 201500806_qPCR_Oly_DNased_RNA

qPCR Plate Layout: 20150806_qPCR_plate_Jake_Oly_DNased_RNA

Results:

qPCR Data File (Opticon): 20150806_165044.tad
qPCR Report (Google Spreadsheet): 20150806_qPCR_Report_Jake_Oly_DNased_RNA

Positive control comes up around cycle ~21.

No amplification in the no template controls.

Two wells of the DNased RNA samples exhibit amplification (E3, F6), however the corresponding respective replicate does not. Will proceed with reverse transcription.

 

Amplification Plots

Positive Controls

 

Melt Curves

Positive Controls (HL1)

DNased RNA Samples

Follow the green and red lines with the vertical bars. The different colors reflect that those are two different samples. Additionally, their respective replicates do not exhibit amplification.

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qPCR – Re-run Jake’s O.lurida DNased RNA Samples NC1, SC1, SC2, SC4 from 20150514

The following DNased RNA samples showed inconsistencies between qPCR reps (one rep showed amplification, the other rep did not) on 20150514:

  • NC1
  • SC1
  • SC2
  • SC4

Reran these four samples to obtain a definitive answer as to whether or not they have residual gDNA in them prior to using them to make cDNA.

Used Oly_Actin primers (SR IDs: 1504, 1505)

Used 1μL from all templates.

All samples were run in duplicate.

Positive control was HL1 O.lurida DNA isolated by Jake on 20150323.

Cycling params:

  • 95C – 2.5mins
  • 40 cycles of:
    • 95C – 10s
    • 60C – 20s
  • Melt curve

Master mix calcs: 20150521_qPCR_Oly_DNased_RNA

Plate layout: 20150521_qPCR_plate_Jake_Oly_DNased_RNA

Results:

qPCR Data File (Opticon): Sam_20150521_145749.tad
qPCR Report (Google Sheet): 20150521_qPCR_Report_Jake_Oly_DNased_RNA

 

No amplification in any of the RNA samples, nor the NTCs. Will make cDNA.

 

Amplification Plots

 

 

Melt Curves

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qPCR – Jake’s O.lurida ctenidia DNased RNA (1hr Heat Shock Samples)

Ran qPCR on DNased RNA from earlier today to assess whether there was any residual gDNA after the DNase treatment with Oly_Actin_F/R primers (SR IDs: 1505, 1504).

Used 1μL from all templates.

All samples were run in duplicate.

Positive control was HL1 O.lurida DNA isolated by Jake on 20150323.

Cycling params:

  • 95C – 2.5mins
  • 40 cycles of:
    • 95C – 10s
    • 60C – 20s
  • Melt curve

Master mix calcs are here (used same calcs from the other day): 20150512_qPCR_Oly_RNA

Plate layout: 20150514_qPCR_plate_Jake_Oly_1hr_HS_DNased_RNA

Results:

qPCR Data File (Opticon): Sam_20150514_170332.tad

qPCR Report (Google Spreadsheeet): 20150514_qPCR_Report_Jake_Oly_DNased_1hr_HS_RNA

 

Positive control samples are the only samples that produced amplification (cycle ~20). Will proceed to making cDNA.

 

Amplification Plots

 

Melt Curves

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qPCR – Jake’s O.lurida ctenidia DNased RNA (Control Samples)

Ran qPCR on DNased RNA from earlier today to assess whether there was any residual gDNA after the DNase treatment with Oly_Actin_F/R primers (SR IDs: 1505, 1504).

Used 1μL from all templates.

All samples were run in duplicate.

Positive control was HL1 O.lurida DNA isolated by Jake on 20150323.

Cycling params:

  • 95C – 2.5mins
  • 40 cycles of:
    • 95C – 10s
    • 60C – 20s
  • Melt curve

Master mix calcs are here: 20150514_qPCR_Oly_DNased_RNA

qPCR Plate Layout: 20150514_qPCR_plate_Jake_Oly_Control_RNA

Results:

qPCR Data File (Opticon): Sam_20150514_153529.tad

qPCR Report (Google Spreadsheet): 20150514_qPCR_Report_Jake_Oly_DNased_Control_RNA

Positive control comes up around cycle ~21.

No amplification in the no template controls.

Four wells of the DNased RNA samples exhibit amplification (B5, C10, C12, D3), however each respective replicate does not. Will re-test these four samples (NC1, SC1, SC2, SC4).

 

Amplification Plots

 

Melt Curves

 

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