If you’re a proteomics scientist, chances are you may not have heard of Sage Science. We’re a small company aimed at improving sample preparation steps in the life sciences, and in the first several years we focused on DNA size selection.
As many customer studies have shown, our Pippin automated instruments for DNA sizing have proven to be the most reproducible and precise method for size selection in the next-generation sequencing workflow. (Check out these papers from Duhaime, Quail, and Peterson for examples.) In these studies, Pippin sizing beat out other automated methods as well as manual gel extraction, the most common selection technique.
Now we’re taking our expertise in gel electrophoresis and bringing it to the proteomics field, where we believe improvements in fractionation protocols could really boost the accuracy and precision of mass spec-based experiments. Protein experts who have evaluated our system say it will have great utility for bottom-up and top-down proteomics experiments, as well as any mass spec workflow using in-gel digestion.
We just unveiled our SageELF, short for Electrophoretic Lateral Fractionation, which can be used for whole-sample fractionation in protein studies. The instrument automatically generates 12 contiguous fractions from a protein sample and delivers them in individual elution wells. Run times take up to three hours, and two samples can be processed at the same time.
For more information, check out the SageELF product brochure.
Next week we’ll be heading south to Baltimore, home of the Orioles and Ravens, for two special events: the annual conference of the American Society for Mass Spectrometry and the Pacific Biosciences user group meeting.
The 62nd annual ASMS, to be held June 15-19 at the Baltimore Convention Center, will bring together thousands of mass spectrometry experts. We’ll be at booth #67 in the exhibit hall to show off our proteomic solutions: SageELF for whole-sample fractionation and BluePippin for targeted protein fractionation.
This year’s ASMS promises to be an excellent conference with a great cast of plenary and workshop presentations. We are particularly eager to hear from Vanderbilt’s Richard Caprioli, a MALDI pioneer who will give an award lecture based on his distinguished career in mass spectrometry development. Also of interest: Lucinda Cohen from Merck Research Laboratories will shed light on how mass specs are used in pharmaceutical research, and Erez Lieberman Aiden from Baylor College of Medicine will share insights on folding properties of genomes. Of course, the real meat of ASMS is always the oral sessions and workshops, where scientists exchange the best methods and technology applications. We don’t have enough expertise to fully absorb all the great details in these sessions, but we are looking forward to learning as much as we can!
On Tuesday, June 17th, PacBio will host its East Coast user group meeting at the University of Maryland, an event co-sponsored by Sage. We attended last year and were really impressed with the quality of talks, so we can’t wait to see what’s in store this time. In the past 12 months, more PacBio users have incorporated BluePippin to increase their average read length, so we are especially eager to see how much of a difference this is making. We’ve seen some projects more than double their average read length, a truly amazing feat given how long PacBio reads are to start with.
We hope to see you at ASMS or the PacBio event. If there’s a moment to spare, we might scoot out to enjoy Baltimore’s lovely Inner Harbor. Last year we stumbled upon a great gelato shop there, so if you miss us at our booth you may find us there!
Timing and proximity can work wonders when it comes to scientific collaborations.
As we were first developing the SageELF, a unique protein sample fractionation device, we discovered by chance that it fit perfectly into an initiative spearheaded by Jeff Silva of Cell Signaling Technologies — our neighbors here in Beverly, Mass.
At the time, Jeff and collaborating researchers from Gordon College, Waters Corp., and the Ionomix Initiative were interested in creating spectral peptide libraries for E. coli. The idea was to test a concept in which a comprehensive mass spec analysis of the E. coli proteome could be performed to provide researchers with a useful resource for future studies. With such a spectral library, the idea went, any protein scientist working with E. coli could do a preliminary scan, run a quick comparison against the spectra on the list and check those off, and then devote mass spec analytical resources to identifying proteins not in the library.
To get a comprehensive snapshot of the organism’s proteome, scientists at Gordon College, led by Dr. Justin Topp, created a “mega-sample” by growing E. coli under more than 60 different conditions, including growth phases, media types, and stress conditions. Then they extracted and pooled the proteins.
Enter the SageELF. The protein sample was separated by size into 12 fractions, upstream of trypsin digestion and LC/MS. This vastly reduced the complexity of the sample and allowed scientists at Waters to test the reaches of their analytical sensitivity.
After ELF fractionation, the sample complexity was even further reduced by a second dimension of separation (reversed-phase LC with the Waters nanoAcquity UPLC) before moving the samples to the Waters SYNAPT-G2S HDMS system to provide deep analytical coverage.
Of course, the name of game with complex mixtures is to find strategies for deconvolving isobaric peaks. Michael Nold, proteomics group leader at Waters, and Manor Askenazi of the Ionomix Initiative provided the software and analysis expertise to tackle the challenge.
How did we do? The team estimated that we identified up to 80 percent of the E. coli proteome — not bad for a first shot. For our part, we feel the SageELF could do much better now that development has been completed; we are getting much better separation in the fractions (i.e. less overlap in adjacent samples). If you’d like to check out the scientific poster we presented at 2013’s ASMS, you can view it here.
We’d like to thank everyone on the team, especially Jeff, for working with us and giving us the opportunity to demonstrate the SageELF. Since we got so much out of this serendipitous neighborhood encounter, we’d like to make sure everyone knows about another great local networking opportunity: the Life Sciences Consortium of the North Shore (of Massachusetts). Our founder and board member Gary Magnant was instrumental in creating this consortium, and we hope that it helps other companies have the same kind of luck we had with Jeff and his team.
Exciting times here at Sage Science — we’re moving! We’ve outgrown our current space and will be heading to offices that provide about 50 percent more room for our sizable team. We won’t even have to learn new commutes, as the new space is just downstairs from our old office.
Aside from the extra elbow room, the move is exciting because we’ll have all of our operations in one central space, bringing manufacturing into the same location as the rest of our team for the first time. We’re proud of the fact that we build all of our instruments right here in Beverly, Mass., and it’ll be great for the whole team to see the flurry of activity as new boxes are assembled, tested, and shipped to customers.
The move comes at a time when we are expanding into new markets. Thanks in large part to stellar work from our customers, our Pippin Prep and BluePippin instruments have become the accepted standard for automated DNA size selection, particularly in the NGS space. Now we’re taking our fractionation expertise to the proteomics realm, where automation, precision, and reproducibility can improve results from top-down, bottom-up, and other mass spec workflows. Our new SageELF performs whole-sample fractionation for proteins and DNA, and the BluePippin has been outfitted with fancy new cassettes that allow it to do targeted protein selection.
If you’re ever in the Beverly area, we hope you’ll stop by for a tour of our new digs.
It seems we just can’t get enough of genomics conferences! This week, Sage Science is proud to be a sponsor of the Sequencing, Finishing, and Analysis in the Future conference hosted by Los Alamos National Laboratory (May 28-30). We’ll be heading to Santa Fe to get our fill of great presentations and posters on what happens after the sequencing run: new methods and best practices for data analysis.
The agenda is built around several useful topics, including: genome sequencing and assembly, finishing tools, genome analysis, and clinical applications of next-gen sequencing. This year’s keynote speakers include Rick Wilson, director of the Genome Institute at Washington University; Deanna Church, senior director of genomics and content at Personalis; and Stephan Schuster, research director at the Singapore Centre on Environmental Life Sciences Engineering.
Talks at SFAF will cover a good mix of sequencing platforms and applications, from metagenomics to clinical to forensic. There will also be many posters — judging from the terrific abstracts, we’ll be spending a lot of time at the poster sessions.
So why is a sample prep company interested in a data analysis meeting? As we’ve carved out our niche in the DNA size selection space, we have found that the people who are most insistent about using Pippin tools are actually the bioinformaticians. They routinely see the difference in quality between assemblies generated from libraries with and without automated size selection and have determined that data from Pippin-sized libraries comes together into cleaner, more accurate assemblies. Never doubt that your sample prep choices have a significant downstream impact!