Genome Sciences
The Genome Sciences Facility offers a range of services for genomic, epigenomic and transcriptomic studies:
- Consultations on experimental design & data validation
- RNA, DNA, Protein quality control
- Quantitative Real-Time PCR (SNP, CNV, mRNA, miRNA)
- Gene expression microarrays (Illumina and Agilent)
- SNP/CNV microarrays (Illumina)
- Next Generation Sequencing, NGS (Illumina)
- Data Analysis
Sample QA\QC
RNA Quality Assessment
Note: All RNA (total or mRNA/poly-A+) must be assessed for quality ("QCed") before use in array analysis. It is also recommended prior to any applications, as good quality RNA is the foundation of all subsequent work and you want to insure that you have quality and validity to your experiments.
- At least 3 µl of RNA at a concentration > 0.1-0.5 µg/µl must be provided in a well-labeled tube for the quality control analysis.
- The cost for RNA QC is $60 for up to 12 samples analyzed on RNA 6000 Nano chip and up to 11 samples analyzed for the RNA 6000 Pico chip (rare or micro-dissected samples).
Image of Perfect RNA - image of partially digested RNA -- image of severely degraded -- image of genomic DNA contaminated RNA
Acknowledgement and thanks for the Bioanalyzer images used
Protocols:
Links to additional protocols will be added as warranted.
Good information - An RNA Primer
We have found the Trizol/Tri-Reagent RNA Isolation Protocol to work well for many sample types.
Qiagen RNeasy kit is another preferred RNA isolation method and is available in the Core Supply Center (C1733).
RNA & DNA QC samples
RNA QC Samples to be submitted by filling out the proper form (RNA Nano, Pico ) or DNA located at
\\hersheymed\files\Research\CoreFacility\Results\Functional Genomics Incoming
and saving into the Functional Genomics Incoming QC Submission Folder on the network drive
\\hersheymed\files\Research\CoreFacility\Results\Functional Genomics Incoming\~QC Submissions.
NOTE: Nano chips hold 12 samples. Pico chips hold 11.
Map your network to this address:
\\hersheymed\files\Research\CoreFacility\Results\Functional Genomics Incoming and into the QC Incoming folder
If you can not Print as a pdf, then use the Excel form and File Save As _ into the folder above.
DNA samples are submitted following the same guidelines.
Samples are to be put in the freezer in C2705A in the Genome Sciences QC (Bioanalyzer) box. The freezer is marked with a Genome Sciences Dropoff sign.
HCAR researchers may place their samples in the box located in the Freeman lab, room 3200.
Note: Use your Name or other Unique description and please make sure the tubes are labeled with something descriptive, as well.
All incoming files to be saved into subfolders in the following folder:
\\hersheymed\files\Research\CoreFacility\Results\Functional Genomics Incoming
Completed results of all work are put in individual researcher folders located at
\\hersheymed\files\Research\CoreFacility\Results\Functional Genomics
Instrumentation
Sample quantitation and quality control
- Axon 4000B microarray scanner
- GE Healthcare Codelink Bioarray Parallel Processing System
- Illumina BeadStation
- Illumina BeadExpress
- Agilent Genespring
- Illumina GenomeStudio
- Illumina iCompute
- Ingenuity Pathway Analysis
New Nucleic acid isolation is now available using the QIAsymphony DNA/RNA Extraction Robot. The QIAsymphony SP enables sample preparation of DNA, RNA, bacterial and viral nucleic acids from whole blood, saliva and buffy coat among other sample types.
FEES per sample:
| 200 ul Whole Blood DNA prep | $ 5.90 |
| 400 ul Whole Blood DNA prep | $ 7.40 |
| 1000 ul Whole Blood DNA prep | $ 10.80 |
| 200 ul DNA prep buffy coat | $ 5.90 |
| 400 ul DNA prep buffy coat | $ 7.40 |
| 400 ul RNA prep | $ 6.40 |
| 800 ul RNA prep | $ 12.00 |
| PAXgene_RNA | $ 12.00 |
| 1000 ul Saliva DNA prep | $ 10.80 |
For more information, contact Sue Patrick x5676 sdp8@psu.edu
NEW Covaris Adaptive Focused Acoustics Ultrasonicator providing DNA and chromatin shearing capabilities, is now available in room C2706. The Covaris enables shearing of samples without thermal damage. The equipment is available on a sign-up basis. Fees: $8.00/per sample (includes specialty tube). Please contact Sue Patrick x5676 sdp8@psu.edu for more details.
NextGen Sequencing
Genome Sciences has added new Illumina sequencing instrumentation (MiSeq and HiSeq 2500) for both focused and large-scale sequencing by synthesis. MiSeq and HiSeq 2500 services are now available. Specific library construction services will be available in early 2013. Contact Genome Sciences staff at x5823 for more information.
qPCR
Please remember to check News & Events and the Calendar for up-to-date information.
Quantitative Real-Time PCR
For researchers at the Hershey Center for Applied Research we are trying to make things easy for you.
- The SDS2.2.2 software is on a computer in the Freeman lab, room 3200.
- 384-well plates and covers may be be available in room 3200. They may also be purchased through the Supply Center.
Sign onto the computer with your e-pass -or the person currently signed on lets you create your file.
You will set up the plate as if you are running it on the instrument, and type the barcode into the initial window that you would normally scan into.
NOTE: If you add a new detector, you will need to export that so it can be uploaded onto instrument computer. Call x5823 or email Rob or Georgina for instructions.
Save the SDS file you create into the "Incoming 7900 Plates" folder in the network folder located here:
\\hersheymed\files\Research\CoreFacility\Results\Functional Genomics Incoming
For 384 well plates : Save as -- YourName_PI_BARCODE.
The plate is then put in the refrigerator in room 3200 and we collect them once a day around 1:30 PM.
NOTE: if you miss the 1:30 deadline, the plate can wait until the next day and/or you can bring it over to College of Medicine, room C2705 by 4:30.
---- Create the file and save it on the Functional Genomics Incoming folder on the network drive. We pull that file up and run the plate and put the file - now with data - back onto the network in the Functional Genomics Results folder in the individual researchers' folder the next day for you to analyze (again, on the computer in Freeman lab / 3200).
Quantitative Real-Time PCR is used to very precisely measure the amount of gene expression in cells or tissue of interest, relative to an endogenous control gene such as 18s, b-actin, etc. The two major methods to perform QRTPCR that are supported here in the Functional Genomics Core Facility are dual-labeled probe chemistry (TAQMAN®) and SYBR green chemistry.
Our recommendation for ease of use is to utilize the pre-optimized Primer/Probe Applied Biosystems Gene Expression Assays ( aka Assays-on-Demand ). These may be ordered through the Core Facility.
We can assist in finding other sources should your gene not be available at ABI, either with another company or with design assistance ( see below on this page ).
A very good source of information describing techniques and including troubleshooting may be found in the 2006 GenomeTech-RT-PCR TechGuide
A brief description ( of both Taqman 5'-nuclease ( dual-labelled probe chemistry ) and SYBR green ) follows:
Taqman Dual-Labeled Probe ( 5'-nuclease )
An oligo that is complementary to a portion of your gene of interest sequence between your PCR primers. This oligo has an fluor attached to the 5' end, and a quencher attached to the 3' end. When the oligo has hybridized to your gene sequence, and the polymerase incorporates it into the new product, the fluor is allowed to distance itself from the quencher. The rate at which new copies of your gene of interest are generated is inferred by the rate at which the intensity of this free fluor increases.
Dual labeled probes are more specific than SYBR green because dual labeled probe chemistry requires specific amplification of the gene of interest in order for fluorescence to be generated. SYBR Green, however, will generate fluorescent signal in the cases of mispriming and the formation of primer dimers. In addition, two different genes of interest may be amplified in one reaction, and detected independently from one another by using different fluors one each dual labeled probe. The disadvantage of using dual-labeled probes is that one dual-labeled probe must be purchase for each gene of interest.
SYBR Green
A dye that will bind to double stranded nucleic acid. As your primers anneal and the polymerase extends to make new copies of your gene of interest, the amount of SYBR green increases proportionately. The rate at which new copies of your gene of interest are generated is inferred by the rate at which SYBR green fluorescence increases.
Should you be using an unavailable species and/or your gene is not yet listed we are also available to assist with Primer Design and Purchase.
A frequently updated list of validated primer/probe sets for quantitation of a variety of mRNAs is maintained at http://www.realtimeprimers.org/
To design your own primer/probe sets, you can use Primer Express, which is available in our facility (C2705).
Contact Rob Brucklacher (x5823) for more information and assistance.
Flanking 5' (forward) and 3' (reverse) Primers can be made in our Macromolecular Core Facility -- or through external companies such as IDTDNA, Invitrogen, Applied Biosystems, etc.
Microarrays
Gene Expression Microarrays
The Genome Sciences Core uses the Illumina platform which comes in several formats
· Mouse Whole Genome Array (multiple of 6) - $345/array
· Mouse RefSeq8 Array (multiples of 8, only sequences are RefSeq ) - $250/array.
· Human HT_12 arrays (multiples of 12 ) - $220/array.
Genotyping Microarrays
· For focused genotyping/CNV studies the VeraCode platform using the BeadXpress instrument is extremely powerful. This platforms lets investigators choose their specific SNPs of interest in 48-, 96-, 144-, 192-, or 384-plex formats. Contact the Core for more information.
Recent Publications
Calendar
For experimental scheduling and Core closures please see:
Contact
The Genome Sciences Core is located in C2705.
Director:
Willard M. Freeman, Ph.D.
Email: wfreeman@psu.edu
Staff:
Robert Brucklacher, B.A., B.S., Rbrucklacher@hmc.psu.edu
Gerogina Bixler, B.A., GBixler2@hmc.psu.edu
Phone: 717-531-5823
