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New Institute to Advance Protein-Focused Drug Discovery

A group of researchers from Massachusetts institutions have established a research institute focused on developing new drugs based on targeting every protein in humans, with initial funding of $15 million. The Institute for Protein Innovation (IPI) said it wil

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A group of researchers from Massachusetts institutions have established a research institute focused on developing new drugs based on targeting every protein in humans, with initial funding of $15 million.

The Institute for Protein Innovation (IPI) said it will work to pursue new therapies for currently intractable diseases by bringing together leaders with backgrounds in academic research, the biopharma industry, and biomedical investing.

IPI has articulated a three-prong mission:

  • Develop and share well-validated monoclonal antibodies targeting every extracellular protein in humans
  • Train scientists from academic and industry labs
  • Create shared core facilities in protein expression, antibody discovery, and biophysical analysis.

Central to that mission, IPI said, will be creating an open-source library of “high-quality” synthetic antibodies that can enable drug discovery research, and may also be usable as therapies.

IPI also articulated a commitment to transparency, saying that it will seek validation by researchers worldwide of antibodies arising from the Institute’s research, and make those antibodies available for analysis and research.

The Institute plans to curate information related to DNA sequence, protein expression, and functional validation of these reagents, including source code, in a publicly-accessible web portal, with the goal of accelerating the development of new drugs and supporting existing large-scale research efforts, citing the Human Cell Atlas.

“Despite their pivotal importance in research and medicine, proteins lag behind DNA and RNA in institutional research support and funding,” IPI founder Timothy A. Springer, Ph.D., said in a statement.

“The IPI fills this gap, providing intellectual capital from academia to empower protein research and pioneer new therapeutics that improve human health,” added Dr. Springer, who is the Latham Family Professor at Harvard Medical School and Boston Children’s Hospital.

Dr. Springer’s lab studies receptor-ligand interactions and signal transmission across membranes. He co-founded IPI with Andrew C. Kruse, Ph.D., assistant professor at Harvard Medical School.

IPI’s initial $15 million in funding includes a $10 million foundational gift from Dr. Springer, and a $5 million grant from the Massachusetts Life Sciences Center, the quasi-public agency tasked with implementing the Commonwealth's 10-year, $1-billion Life Sciences Initiative. IPI plans to add to that funding with additional philanthropy, research grant support, and research collaborations with biopharmas.

For its first year of operations, IPI will be housed at Harvard Medical School. The Institute plans to secure long-term lab and office space in Boston’s Longwood Medical Area later this year.

IPI expects to create up to 10 permanent jobs during its first year, with plans to grow that workforce to 19 or 20 positions by 2022. The Institute said it will recruit researchers focused on directed evolution, cell-line development, and biophysical protein characterization, in addition to glycoprotein expression and antibody discovery expertise.

“Bringing our ever-expanding knowledge in proteomics closer to therapeutics is essential,” added George Q. Daley, M.D., Ph.D., dean of the faculty of medicine with Harvard Medical School. “This collaboration is a powerful illustration of the fruitful cross-pollination that occurs when academia, the public and private sectors, philanthropy, and biotech come together.”

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Related questions

01How stable is the antibody?

A crucial question often addressed during preclinical development focuses on the in vivo stability of therapeutic antibodies. Increasing the half-life of a therapeutic antibody has several benefits ranging from higher treatment efficacy to increased advantages for the patients who will have a fewer number of therapy sessions and a reduced cost. Given these compelling benefits, following the identification of therapeutic antibodies with the desired specificity, developers usually subject them to a refinement step to increase their stability. This process is often hindered by the lack of reliable experimental tools to predict the half-life of antibodies in patients. The major hurdle of using mouse models to predict antibody stability in the serum lies in the way immunoglobulin proteins are processed by the organism. In mammals, most proteins circulating in the serum undergo constant uptake by endothelial cells and are routed through the endosomes to the lysosomal compartment for degradation. In the endosomes, immunoglobulin G (IgG) proteins are recognized and bound by a transmembrane protein, called the neonatal Fc receptor (FcRn), which mediates their recycling to the plasma membrane and subsequent release back into the serum. As a result, the half-life of IgGs are significantly extended by this mechanism. Since most therapeutic antibodies belong to the IgG class, this recycling system is very relevant for their relative stability in the body. Remarkably, the relative affinity between IgGs and FcRn is extremely disparate between different species, with the mouse receptor showing a much higher affinity than its human counterpart.

Source: www.genengnews.com ↗
02Undruggable or unscreenable?

Another obstacle to discovering new PPI inhibitors is the lack of libraries designed to hunt for them, points out Philippe Roche, PhD, senior scientist at the Integrative Structural and Chemical Biology team at the Cancer Research Center of Marseilles, France. “If you screen PPIs using libraries that were designed for kinases or GPCRs, that’s why you don’t get a lot of good results,” he says. To that end, his group began assembling a library focused on orthosteric inhibitors of PPIs. The result was 2P2Idb, a hand-curated, structural database cataloguing orthosteric inhibitors of PPIs for which the interface had been 3D characterized. From analyzing these known PPI inhibitors, and what structures they had in common, Roche and his colleagues developed a model to predict whether compounds would likely inhibit PPIs. Using this method, 2P2Idb creates an enriched screening library that dramatically increases the hit rate compared to standard libraries. Having proven their success with a small library of 1600 compounds, they are in the process of expanding the library to 10,000 compounds. Once that’s published, “the idea is to make this library available to labs around the world,” Roche says. “We will provide the library free of charge for people to be able to screen PPI targets.”

Source: www.genengnews.com ↗
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Peptide Therapy Guide Editorial Team

Editorial team for Peptide Therapy Guide.

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