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Design of a Small Molecule That Stimulates VEGFA Informed from an Expanded Encyclopedia of RNA Fold-Small Molecule Interactions

preprint
submitted on 09.04.2019, 03:40 and posted on 09.04.2019, 14:53 by Hafeez Haniff, Laurent Knerr, Xiaohui Liu, Gogce Crynen, Jonas Boström, Daniel Abegg, Alexander Adibekian, Malin Lemurell, Matthew Disney

Vascular Endothelial Growth Factor A(VEGFA) stimulates angiogenesis in human endothelial cells and increasing its expression is a potential treatment for heart failure, currently accomplished via gene or mRNA therapy. Herein, we describe a designed small molecule (TGP-377) that specifically and potently enhances VEGFA expression by targeting of a non-coding microRNA that regulates its expression. This investigation was initiated by studying the RNA motifs that bound small molecules from a subset of the AstraZeneca compound collection. A two-dimensional combinatorial screen (2DCS) revealed preferences in small molecule chemotypes that bind RNA and preferences in the RNA motifs that bind small molecules, increasing the known information by 20-fold. Analysis of this dataset against the RNA-mediated pathways that regulate VEGFA defined that the microRNA-377 precursor (pre-miR-377), which represses VEGFAmRNA translation, is druggable in a selective manner. The compound potently and specifically upregulated VEGFA in Human Umbilical Vein Endothelial Cells (HUVEC). Analysis of the proteome and angiogenic phenotype affected by TGP-377 demonstrated that the compound is highly potent and selective. These studies illustrate the power of 2DCS to define molecular recognition events between “undruggable” biomolecules and small molecules and the ability of sequence-based design to deliver efficacious compounds that target RNA and precisely and potently modulate disease-associated pathways.

Funding

RO1-GM097455

History

Email Address of Submitting Author

disney@scripps.edu

Institution

The Scripps Research Institute

Country

USA

ORCID For Submitting Author

0000-0001-8486-1796

Declaration of Conflict of Interest

MDD is a founder of expansion therapeutics

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