Tag Archives: Ostrea lurida

RNA Isolation – Olympia oyster gonad tissue in paraffin histology blocks

My previous go at this was a little premature – I didn’t wait for Laura to fully annotate her slides/blocks. Little did I know, the tissue was mostly visceral mass and, as such, I didn’t hit much in the way of actual gonad tissue. So, I’m redoing this, now that Grace has gone through and annotated the blocks to point out gonad tissue. SN-10-16 was sent to Katherine Silliman on 20170720.

Isolated RNA from Olympia oyster gonad previously preserved with the PAXgene Tissue Fixative and Stabilizer and then embedded in paraffin blocks. See Laura’s notebook for full details on samples and preservation.

 

RNA was isolated from the following samples using the PAXgene Tissue RNA Kit (Qiagen). Gouged samples from the blocks weighing ~10mg from each of the tissues and processed according the protocol for isolating RNA from blocks of paraffin-embedded tissues.

Background on all of this is in this GitHub Issue

NF-10-22
NF-10-23
NF-10-24
NF-10-26
NF-10-28
NF-10-30
SN-10-16
SN-10-17
SN-10-20
SN-10-25
SN-10-26
SN-10-31

IMPORTANT:

  • Prior to beginning, I prepared an aliquot of Buffer TR1 by adding 40μL of β-mercaptoethanol (β-ME) to 4000μL of Buffer TR1)

Isolated RNA according to the PAXgene Tissue RNA Kit protocol with the following alterations:

  • “Max speed” spins were performed at 20,000g.
  • Tissue disruption was performed by adding ~25-50 glass beads (425 – 600μm diameter) with the Disruptor Genie @ 45C for 15mins (in the Friedman Lab).
  • Samples were eluted with 27μL of Buffer TR4 x 2, incubated @ 65C for 5mins, immediately placed on ice.

 

Results:

Samples were not quantified due to lack of proper RNA Qubit assay AND the computer that our NanoDrop1000 is hooked up to is dead. Will have Katherine Silliman perform quantification.

Samples were stored at -80C temporarily.

Samples will be sent to Katherine Silliman for high-throughput library construction and sequencing once I hear back from her regarding her availability to receive the samples.

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RNA Isolation – Olympia oyster gonad tissue in paraffin histology blocks

UPDATE 20170712: The RNA I isolated below is from incorrect regions of tissue. I misunderstood exactly what this tissue was, and admittedly, jumped the gun. The tissue is actually collected from the visceral mass – which contains gonad (a small amount) and digestive gland (a large amount). The RNA isolated below will be stored in one of the Shellfish RNA boxes and I will isolate RNA from the correct regions indicated by Grace

Isolated RNA from Olympia oyster gonad previously preserved with the PAXgene Tissue Fixative and Stabilizer and then embedded in paraffin blocks. See Laura’s notebook for full details on samples and preservation.

 

RNA was isolated from the following samples using the PAXgene Tissue RNA Kit (Qiagen). Gouged samples from the blocks weighing ~10mg from each of the tissues and processed according the protocol for isolating RNA from blocks of paraffin-embedded tissues.

Tissue identification is available in this GitHub Issue

NF-10-22
NF-10-23
NF-10-24
NF-10-26
NF-10-28
NF-10-30
SN-10-16
SN-10-17
SN-10-20
SN-10-25
SN-10-26
SN-10-31

IMPORTANT:

  • Prior to beginning, I prepared an aliquot of Buffer TR1 by adding 40μL of β-mercaptoethanol (β-ME) to 4000μL of Buffer TR1).
  • Reconstituted DNase I with 550μL of RNase-free H2O. Aliquoted in 100μL volumes and stored @ -20C in the “-20C Kit Components” box.

Isolated RNA according to the PAXgene Tissue RNA Kit protocol with the following alterations:

  • “Max speed” spins were performed at 20,000g.
  • Tissue disruption was performed by adding ~25-50 glass beads (425 – 600μm diameter) with the Disruptor Genie @ 45C for 15mins (in the Friedman Lab).
  • Samples were eluted with 27μL of Buffer TR4 x 2, incubated @ 65C for 5mins, immediately placed on ice and quantified on the Roberts Lab Qubit 3.0 with the RNA High Sensitivity Assay (ThermoFisher Scientific) using 5μL of each sample.

Results:

Concentrations (Google Sheet): 20170710_RNA_qubit_oly_histo_blocks

Well, the good news is that there’s RNA from all the samples and it seems to be in relatively high concentrations!

The bad news is that the concentrations for 10 of the 12 samples were too high and outside the range of the Qubit RNA HS Assay! Since we don’t have the broad range RNA assay, I can’t properly quantify the remaining samples. However, these samples are being sent to Katherine Silliman at some point, so I’ll leave it up to her to quantify the samples. I’m also guessing that she’ll run them on a Bioanalyzer to assess their integrity prior to beginning library construction, so that will also yield concentrations for the samples.

Samples were stored at -80C temporarily.

Samples will be sent to Katherine Silliman for high-throughput library construction and sequencing once I hear back from her regarding her availability to receive the samples.

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Data Management – SRA Submission Olympia Oyster UW PacBio Data from 20170323

Submitted the FASTQ files from the UW PacBio Data from 20170323 to the NCBI sequence read archive (SRA).

FTP’d the data to NCBI’s servers, following their instructions. Briefly,

Change to the directory where the FASTQ files are (Owl/web/nightingales/O_lurida) and then initiate an FTP session:

ftp -i ftp-private.ncbi.nlm.nih.gov

Enter provided username/password, change to my designated uploads directory, create new folder dedicate to this particular upload. Then, upload all the files using the mput command:

mput *filtered_subreads*

SRA deets are below (assigned FASTQ files to existing BioProject and created a new BioSample). Will update post with SRA number when processing is complete on the NCBI end.

SRA: SRS2339870
Study: SRR5809355
BioProject: PRJNA316624
BioSample: SAMN07326085

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Data Management – Tarball of Olympia oyster UW PacBio Data from 20170323

I’d previously attempted to archive this data set on multiple occasions, across multiple days, but network dropouts kept killing my connection to the server (Owl) and, in turn, interrupting the tarball operation.

Today, I came in to a successful creation of the tarball of this PacBio data set (it only took 10hrs)! And, it’s a big file: 162GB!! Remember, that’s the compressed size!

Now, we’ll have to decide where we want to keep the tarball. I guess this’ll be part of our next data management plan discussions.

 

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Sample Annotation – Olympia oyster histology blocks (from Laura Spencer)

I’ve been asked to isolate RNA from some paraffin-embedded Olympia oyster gonad tissue.

Despite some excellent documentation by Laura Spencer (images of tissue layouts in histology cassettes and a corresponding cassette mapping key file), the histology facility seems to have flipped some things around and/or repositioned/split the contents of each cassette. This makes ID-ing the proper tissues tedious and, at times, difficult.

The list of tissues that needs to be processed is listed in this GitHub Issue #648. I’ve also added the list below:

NF-10 22
NF-10-23
NF-10-24
NF-10-26
NF-10-28
NF-10-30
SN-10-16
SN-10-17
SN-10-20
SN-10-25
SN-10-26
SN-10-31

Prior to beginning RNA isolations, I have annotated images of the histology blocks and will be waiting for Laura to confirm that my annotations are correct. I will be posting a link to this notebook entry in the GitHub issue listed above for her to view and wait for her confirmation.

UPDATE 201700707 – Laura has indicated that many of my annotations are incorrect. Katie has gone through and made proper identification: https://github.com/sr320/LabDocs/issues/648#issuecomment-313792588

 

Additionally, as indicated in the GitHub Issue above, histology block “Oly 14″ does not have a corresponding tissue cassette photo (containing sample NF-10 26). Without the original image, I don’t think I can make an accurate guess on how the tissues are oriented in the resulting two histo blocks (see below).

 

BLOCKS 5

 

BLOCK 6

 

 

BLOCK 9

 

 

BLOCK 10

 

 

BLOCKS 14 (unable to annotate at time of posting)

 

 

 

BLOCK 15

 

 

 

BLOCK 21

 

 

 

 

BLOCK 22

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Manuscript Re-submission – Oly Stress Response to PeerJ for Review

Last August, we made our initial submission of this paper to PeeJ.

Today, we re-submitted the revised manuscript.

The repo for this paper is here.

I’ve also submitted an updated pre-print. I will update this post when it is publicly accessible (it has to be approved by PeerJ staff before it becomes public).

UPDATE 20170703 – Updated pre-print is now available: https://peerj.com/preprints/1595/

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Data Management – Olympia oyster UW PacBio Data from 20170323

Due to other priorities, getting this PacBio data sorted and prepped for our next gen sequencing data management plan (DMP) was put on the back burner. I finally got around to this, but it wasn’t all successful.

The primary failure is the inability to get the original data file archived as a gzipped tarball. The problem lies in loss of connection to Owl during the operation. This connection issue was recently noticed by Sean in his dealings with Hyak (mox). According to Sean, the Hyak (mox) people or UW IT ran some tests of their own on this connection and their results suggested that the connection issue is related to a network problem in FTR, and is not related to Owl itself. Whatever the case is, we need to have this issue addressed sometime soon…

Anyway, below is the Jupyter notebook that demonstrates the file manipulations I used to find, copy, rename, and verify data integrity of all the FASTQ files from this sequencing run.

Next up is to get these FASTQ files added to the DMP spreadsheets.

Jupyter notebook (GitHub): 20170622_oly_pacbio_data_management.ipynb

 

I’ve also embedded the notebook below, but it might be easier to view at the GitHub link provided above.

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