Novel target to new discovery engine
In the search for novel drug targets, BPGbio combined the data generated by their proprietary Bayesian causal AI models in oncology, neurology and inflammatory disease, and against this backdrop of trillions of data points, they identified a little-known target: a Ubiquitin-Conjugating Enzyme (E2s) that was a critical biological node in disease biology. While E2s are known to be crucial in the protein degradation pathway, they had long been considered undruggable due to the lack of druggable binding pockets.
BPGbio’s next move was to validate their in-silico E2 insight in their wet lab. By employing conventional gene manipulation tools (siRNA,) and disease relevant cell types ( cancer cells, neuronal cells), BPGbio observed cell cycle effect in cancer cells leading to anticancer effect, and improved cell survival in neuronal cells.
To overcome the traditional E2 druggability challenge, BPGbio designed their ligands to bind a modified form of E2 with a deeper binding pocket, enabling discovery of selective ligands. The E2 based drug discovery program was initiated as a wet lab exercise of identifying fragment based hit molecules and growing them into drug like small molecules. In the process the team identified 2 unique E2 based discovery opportunities – Novel Small Molecule Therapeutic for Huntington Disease and a scaffold for Targeted Protein Degradation of undruggable targets.
BPGbio’s unique E2-based TPD approach is differentiated from the typical E3-based approach, with several inherent advantages, including potentially higher efficacy, potency, broader disease scope, and reduced drug toxicity.
BPGbio very quickly confirmed TPD was possible via their novel E2 scaffold approach, opening up white space in disparate therapeutic areas and indications. BPGbio is beginning exploration of their E2 TPD Platform starting with several programs in oncology.
The company is ready for collaborative and partnered pipeline engagement with pharma partners. BPGbio holds proprietary protein structures, computational models, and assays for rapidly attaining selectivity and specificity to a class of E2s. Structural data has enabled the creation of chimeric targeting molecules or Bi functional degraders, that combine exit vector knowledge, linker and Protein of Interest (POI) ligands. The company is now leveraging proprietary chemo proteomics probe sets and cutting-edge proteomics platforms to address degradability of hitherto undruggable protein substrates.
Prior to the E2 discovery by BPGbio’s NAi Platform, no one had focused on developing an E2-based TPD approach, let alone leveraging it into multiple therapeutic programs. The NAi Platform truly unlocked a hidden biological insight that will hopefully improve the human condition for all.
“The NAi Interrogative Biology Platform promises to combine state-of-the-art causal inference AI with the most powerful computing and robust biological and phenotypic data available to reach unprecedented depth in diagnostic and therapeutic science.”
– Jeremy Smith, Ph.D., Governor’s Chair and Director, University of Tennessee/Oak Ridge National Laboratory Center for Molecular Biophysics
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