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THURSDAY, MAY 22, 2014
7:30 am Interactive Breakout Discussions
Breakout discussion groups are interactive, guided discussions hosted by a facilitator or set of co-facilitators to discuss some of the key issues raised during the conference. Delegates will join a table of interest and become an active part of the discussion at hand.
Table 17: Payload and Linker Chemistry
Moderator: Patrick Beusker, Ph.D., Director, Antibody-Drug Conjugates, Synthon
Table 18: Allosteric Modulators
Moderator: Craig W. Lindsley, Ph.D., Director, Medicinal Chemistry, Vanderbilt University Medical Center
Table 19: Beyond Rule of Five
Moderator: Renato Skerlj, Ph.D., Founder, Drug Discovery Consulting LLC; former Head, Small Molecule Discovery, Genzyme, a sanofi company
Table 20: Residence Time and Receptor Kinetics
Moderator: Stewart L. Fisher, Ph.D., Principal, SL Fisher Consulting, LLC
Table 21: What Value Does Modeling Provide to Medicinal Chemistry?
Moderator: W. Patrick Walters, Ph.D., Principal Research Fellow, Group Head, Computational Sciences, Vertex Pharmaceuticals, Inc.
Co-moderator: Anthony Nicholls, Ph.D., CEO & Founder, OpenEye Scientific Software
RECEPTOR KINETICS AND RESIDENCE TIME
8:35 Chairperson’s Remarks
Renato Skerlj, Ph.D., Founder, Drug Discovery Consulting LLC; former Head, Small Molecule Discovery, Genzyme, a sanofi company
8:45 Modulating Drug-Target Residence Time and Assessing Target Vulnerability
Peter J. Tonge, Ph.D., Professor, Chemistry, Institute for Chemical
Biology & Drug Discovery, Stony Brook University
Predicting drug efficacy in humans remains a major barrier to the development of novel chemotherapeutics. We propose that the life-time of the drug-target complex (residence time) is of critical importance for determining in vivo drug activity since drug and target are not at equilibrium in vivo. We are currently exploring the molecular factors that control the life-time of the drug-target complex and are using this information to rationally alter residence time. The translation of residence time effects through biological systems of increasing complexity reveals that drug-target kinetics can provide insight into target vulnerability.
9:05 CRTh2: Can Residence Time Help?
Rick Roberts, Ph.D., Senior Scientist, Medicinal Chemistry, Almirall
The measurement of ligand binding potency is fundamental to medicinal chemistry, however simple potency data gives no indication of the underlying kinetics of the binding and unbinding processes. Binding events can occur over seconds, minutes, hours or days, and these differences can give rise to both desirable and undesirable consequences. The medicinal chemistry community is now embracing the phenomenon of residence time not only by unraveling the possible consequences of fast and slow kinetics, but by harnessing this extra dimension of ligand-target binding. This talk outlines some of the results of our efforts to develop potent, orally bioavailable CRTh2 antagonists with long receptor residence time to prolong the pharmacodynamic effect. Structure Residence Relationships (SRR) revealed the requirement of specific functional groups which bestowed long dissociation half-lives of 24 h and above.
9:25 Translating Slow-Binding Inhibition Kinetics into Cellular and in vivo Effects
Stewart L. Fisher, Ph.D., Principal, SL Fisher Consulting, LLC
This seminar will discuss the concept of target:ligand residence time and the current challenges in translating routine in vivo models. The development of mechanistic pharmacodynamic models that incorporate these features will be presented and demonstrated using data from an antibacterial drug discovery program.
9:45 Natural Product-Guided Identification of Novel Sweet Spots in Druggable Space
Christoph Gibson, Ph.D., Director, Medicinal Chemistry, AnalytiCon Discovery
The success rate of medicinal chemistry programs is closely linked to the structural features of the compounds to be optimized. AnalytiCon has built up a unique expertise in introducing favorable natural product motifs into drug discovery programs. Our latest macrocycle series with high scaffold diversity as well as a case study from our autotaxin inhibitor program will be presented illustrating the potential of the chemical space that is accessible to AnalytiCon.
10:00 Coffee Break in the Exhibit Hall with Poster Viewing
10:45 Protein Methyltransferase Inhibitors as Personalized Cancer Therapeutics: DOT1L and EPZ-5676
P. Ann Boriack-Sjodin, Ph.D., Director, Protein and Structural Sciences, Epizyme, Inc.
The enzymatic activity of DOT1L is associated with a chromosomal translocation that is universally found in patients with MLL-rearranged leukemia. Drug discovery efforts have yielded a potent, selective inhibitor of DOT1L (EPZ-5676) that affects the appropriate histone methyl marks in cells and affects tumor growth inhibition in xenograft models.
CASE STUDIES SESSION: PART III
11:05 Modern Drug Research Informatics Applications to CNS, Infectious, Neglected, Rare, and Commercial Diseases
Barry Bunin, Ph.D., CEO, Collaborative Drug Discovery (CDD, Inc)
There are currently hundreds of commodity technologies for handling scientific information – each with its own scope and limitations. Layering unique collaborative capabilities upon requisite drug discovery database functionality unlocks and amplifies synergy between biologists and chemists. The application of collaborative technologies to interrogate potency, selectively, and therapeutic windows of small molecule structure activity relationship (SAR) data will be presented in 5 case studies. Given external (public and collaborative) data grows faster than internal data, novel collaborative technologies to gracefully manage combined external and private data provide an ever-increasing competitive advantage.
11:20 BCL Case Study – From Fragment to Clinical Candidate
Vincent S. Stoll, Ph.D., Associate Director, Structural Biology, AbbVie
This presentation will describe the discovery of Bcl drug candidates, from fragments to orally bioavailable drug candidates. The use of high-throughput chemistry and dedicated medicinal chemistry in the optimization of fragment leads into potent molecules with the property optimized features for oral administration will be described. Refinement of understanding of the underlying biology of the Bcl family also leads to changes in requirements for our drug candidates.
11:40 Solving hERG Channel Inhibition
Kap-Sun Yeung, Ph.D., Principal Scientist, Discovery Chemistry, Bristol-Myers Squibb
A better understanding of the molecular characteristics of the hERG channel binding pocket and the ambiguous function of a basic amine, optimization of lipophilic ligand efficiency, as well as an appreciation of hERG trafficking inhibition are essential in mitigating the blockade of this cardiac potassium channel during the drug discovery process.
12:00pm Close of Conference
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