Drug Discovery Core of the FAMRI Center of Excellence

The Drug Discovery Core offers critical services to FAMRI investigators at Johns Hopkins and beyond to find the most promising candidate therapeutics by providing high-throughput screening of drug libraries, development of assays for drug screens and a range of other support services.
 

Leadership

Director: Jun O. Liu, PhD (2018–present)
Co-Director: Ronald Schnaar (2018–present)
Manager: Alan Long (2018-present)

To learn about our capabilities and start a project, contact core manager Alan Long.

Former Directors: 

Philip Cole, M.D., Ph.D., and Julie Brahmer, M.D. (2013–2018)
Charles Rudin, M.D., Ph.D. (2005–2013)

Core Location:
Johns Hopkins East Baltimore Campus
Miller Research Building, Room 346
733 N Broadway, Baltimore, MD

What We Provide

Our core provides critical resources for drug screening and early-stage drug discovery by facilitating broad chemical space exploration and the use of commercial drug libraries and those that have been exclusively developed by Johns Hopkins researchers over the past decade.

Compound Libraries:

The Johns Hopkins Drug Library

  • 4,700 existing drugs that have been approved by the US FDA or its foreign counterparts for human use.
  • First-of-its-kind established in an academic institution and has helped catalyze the field of drug repurposing across academia and pharmaceutical companies.
  • Key advantage: hits from screens with sufficient potency can be rapidly translated into human clinical studies, greatly accelerating the drug discovery process.

Molecular Glue Rapafucin Library

  • 45,000 compounds in the hybrid macrocycle (rapafucin) molecular glue library.
  • Inspired by the natural product-derived drug rapamycin.
  • Rapafucins retain the FKBP-binding domain of rapamycin but contain an oligopeptide domain in place of the mTOR-interacting effector domain of rapamycin. Upon binding to FKBP, the resultant FKBP-rapafucin complexes form a neosurface with areas comparable to antibodies, allowing them to disrupt or modulate protein-protein interactions and to conquer undruggable targets.

ChemDiv Library

  • The commercial ChemDiv diversity small molecule library is available in two different versions, 10K and 100K, for pilot and full-scale screens.

Core Services

Experts in the core support all levels of drug screening services, from assay design through preliminary data analysis.

  • High throughput screening of small-molecule libraries including biochemistry and cell-based assays
  • Assay development and implementation customized to investigator research goals
  • Pilot/proof-of-concept screening using smaller, focused libraries
  • Preliminary data analysis and hit picking
  • Process automation services, including single cell sequencing support, MODLI-TOF workflows and large-scale sample preparation and reformatting

Impact and Notable Achievements

Research conducted through the core has contributed to discoveries, including:

  • Identification of itraconazole as a novel inhibitor of angiogenesis and Hedgehog signaling 
  • Identification of a stereoisomer of itraconazole as a more potent and less toxic anti-angiogenic drug candidate for non-small cell lung cancer
  • Repurposing of nitroxoline as an anticancer agent now in a Phase 3 clinical trial
  • Development of the molecular glue rapafucin library and discovery of a highly potent and isoform-specific ENT1 inhibitor that is in late preclinical development as a first-in-class treatment of acute kidney injury

Publications, Inventions, Pipelines and Companies

The core has supported numerous inventions, drug candidates, journal publications and biotechnology companies started with intellectual property generated by Johns Hopkins investigators. 

Mission and Brief History

The ChemCore High Throughput and Drug Discovery Core is supported by the Johns Hopkins Kimmel Cancer Center and the Institute for Basic Biomedical Sciences. The core has its roots in the Johns Hopkins FAMRI Center of Excellence, which was founded in 2005 and is dedicated to biomedical discovery and translation related to cigarette smoke–related diseases. The FAMRI Center of Excellence has supported research in four core facilities and a variety of developmental projects that span drug discovery, in vivo animal model analysis, clinical studies and population-based exposures and outcomes.

Projects supported within the core have included studies on telomeres and fibrosis, head and neck cancer therapies, epigenetics of lung cancer, and chemoprotection against asthma. The core has supported research that has led to the discovery of the antifungal drug itraconazole as a novel inhibitor of angiogenesis and the Hedgehog signaling pathway, the repurposing of the antibiotic nitroxoline as a novel anticancer agent for bladder cancer that has entered a phase 3 trial, and the development of a protein–small molecule conjugate for the potential treatment of immune and inflammatory lung diseases.

Support from FAMRI continues today, as part of the Drug Discovery Core and Drug Library Screening Center, led by Dr. Jun Liu. The Drug Library Screening Center also has been supported by the Synthetic Core Facility, led by Dr. David Meyers.