Parag Mallick
Analyst · Jefferies. Your line is open
Thanks, Sujal. As many of you know, Nautilus grew out of my personal frustrations in performing large scale multiomics and system medicine studies. In particular, my frustration was born from the extraordinary effort required to simply comprehensively and reproducibly analyze the protein sample. For reference using mass spectrometry, the average lab can only identify about 8% of the proteins present in a blood sample, and only about 20% to 30% of the proteins in a cell or tissue sample. After years of work that only incrementally improved the mass spectrometry based proteomics workflow, it became clear that we had to do something radically different. Starting with a blank sheet of paper, we wrote down what scientists and researchers like me want. This effort resulted in a very clear set of design criteria. First, we wanted to be able to measure the whole proteome not just 8% of it. In addition, the instrument had to be easy to use and ultra-sensitive, and the process needed to be reproducible and robust, complete, fast, and fully integrated. As Sujal mentioned earlier, we set out to design a platform that would enable biologists to go from sample to insight easily, to put a sample in and get an answer out. With these objectives as the design criteria, we set out to create something from the ground up to achieve these criteria and have now created a platform that has key technical innovations across sample preparation, instrumentation and machine learning. Our first platform innovation was the recognition that we would need a single molecule protein array. This is extremely challenging to do and the inverse of how people typically think about protein analysis workflows. In typical workflows, antibodies or aptamers are mobilized in bulk on a surface and used to capture proteins out of the sample. Contrary to traditional thinking, we instead and mobilized each individual protein molecule from the sample onto a hyperdense array. This allows us to go beyond bulk measurements of proteins to unlock the sensitivity and scale we want to deliver. That leads to our second major breakthrough, which is the instrument itself. Here we designed a stable ultrafast, ultrasensitive, multi-cycle imaging process, which we can use to repetitively probe each individual protein molecule on our array with different binding reagents. Each cycle allows us to get more and more information about each individual molecule. The third significant platform innovation is the integration of a sophisticated machine learning framework within the measurement itself. We have recognized that by bringing machine learning up into the measurement process, it fundamentally changes the landscape of what's possible and potentially unlocks our ability to measure substantially the entire proteome. While the underlying technologies are quite complex, the product we ultimately expect to deliver will be an easy to use fully integrated sample-in, answer-out platform. As we continue to run hundreds of samples through our prototype instruments each month and analyze the resulting data, we have become even more confident that our platform will ultimately enable our customers to pursue the research they want to pursue without experiencing the same frustration that led me to conceive of Nautilus in the first place. Going beyond broad-scale profiling, our platform also has the potential to unlock a tremendously exciting opportunity to measure proteoforms. For those who aren't familiar, each protein exists in potentially hundreds or thousands of different forms with different patterns of modifications. For example, one protein molecule may have phosphorylations at positions 15, 25 and 217, and another may be truncated and have phosphorylations at positions 25, 300, and 325. It's believed that are – there are potentially millions of these different proteoforms and that the pattern of their modifications defines which drugs may work and how. Consequently proteoforms are important for both understanding disease mechanism and as novel biomarkers. Peptide centric analysis methods are unable to discern individual proteoforms, but in our platform, because we study intact proteins we are able to provide a detailed view of the proteoform landscape, its molecular heterogeneity and that of individual proteins and pathways. Last, it's important to understand that our technology is highly open and customizable with compatibility to a wide variety of binary reagents. With a simple labeling kit our platform is designed to be able to use virtually any reagent in the library of biologicals that have been created by biopharma, academia or commercial antibody manufacturers today. This flexibility is an incredibly powerful aspect of our technology, which makes it customizable for the biological research community to ask and answer the questions that they want depending on which binary reagents are introduced. We continue to meet key internal milestones including advances in the manufacturing design of our instrument, hardening of our protein analysis workflow and of our key consumables as they transition to our manufacturing partners. These activities all support our goal of commercialization in late 2023. I'm very excited for what lies ahead. I'm also excited for our team to begin broadly sharing their work through a series of planned publications, the first of which will describe our use of modular fluorescent nanoparticle DNA probes for detection of peptides and proteins. That paper was recently submitted and is available on bio-archive now. We anticipate that an additional foundational manuscript on Nautilus technology will be submitted later this quarter with other manuscripts being submitted later this year. With that, I'm going to turn the conversation back to Sujal. Sujal?