5th Annual

Anti-Inflammatories: Small Molecule Approaches

Focusing on Medicinal Chemistry Optimizations

April 23-24, 2014 

 
 

Biologics have been useful in treating diseases of chronic inflammation such as multiple sclerosis or rheumatoid arthritis, but there is still an unmet medical need for more convenient and safer treatment options for such diseases. A few kinase inhibitors that fit these criteria have been recently launched and a few are in late-stage development. Join fellow drug discovery scientists at Cambridge Healthtech Institute’s fifth annual Anti-Inflammatories: Small Molecule Approaches day- and-a-half meeting track to stay abreast of the latest progress in the field of oral-based (mostly small molecules) inhibitors for inflammation. A focus will be on the chemical optimizations that have enabled the leading inflammation drug candidates to progress. Presentations on newer and non-kinase targets for combating inflammation will also be a part of the agenda.

Speakers were great and presented valuable data. Comprehensive conference and
overview of most current inflammation targets and therapies.

Tina T., Associate Scientist, Biogen Idec

 

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Wednesday, April 23 - Day 1

 
 

 

7:00 am Registration and Morning Coffee

 

KINASE INHIBITORS FOR INFLAMMATION 

8:00 Chairperson’s Opening Remarks

Seng-Lai “Thomas” Tan, Ph.D., Head, Cellular and Translational Immunology, EMD Serono Research and Development Institute, Inc.
 

 

8:10 Featured Presentation: B Cell Receptor Signaling Inhibitors for Treatment of Inflammatory Diseases

Kamil PuriKamal Puri, Ph.D., Associate Director, Research, Gilead Sciences, Inc.

B-cell receptor (BCR) signaling plays a critical role in activation and function of self-reactive B cells that contribute to autoimmune diseases. Recent data have established an important role for PI3Kdelta in coupling BCR to B-cell activation and inhibition of this pathway may represent a promising new strategy. This talk will focus on recent achievements in the mechanism of action, pharmacological properties, and preclinical activity of PI3Kdelta inhibitors, with a focus on their emerging role in treating autoimmune disorders.

8:40 Discovery and Optimization of BTK Inhibitors

Wendy YoungWendy Young, Ph.D., Director, Discovery Chemistry, Genentech

Bruton’s tyrosine kinase (BTK) plays a critical role in the development, differentiation and proliferation of B-lineage cells, making it an attractive target for the treatment of immunological disorders (e.g. RA, Lupus, MS, Asthma) as well as B-cell lymphomas. Ibrutinib, the most advanced BTKi in oncology indications, has proven highly effective, although there have been increasing reports of patients relapsing due to mutations, including such at Cys481. Our efforts leading to the design and development of our first clinical candidate, GDC-0834, will be described as well as our subsequent efforts that yielded second and third generation inhibitors. Crucially, such analogs remain highly active against Cys481 (and other) Btk mutants. SAR, crystal structures, DMPK, and efficacy data from examples of these series will be described.

9:10 A Novel Class of Selective SYK Inhibitors for Inflammation

Lars BurgdorfLars Burgdorf, Ph.D., Principal Scientist, Medicinal Chemistry, Merck KGaA, Germany

Spleen Tyrosine Kinase (SYK) is a promising target for the treatment of autoantibody-mediated diseases such as rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). We designed a new class of highly potent and selective SYK Inhibitors. We will present our drug discovery strategy for library design and compound optimization, including SAR, X-ray structures and selectivity profiles.

9:40 Coffee Break

10:05 Selective JAK1 Inhibition as a Therapeutic Strategy in Inflammation

Christel MenetChristel Menet, Ph.D., Senior Lead, Project Director, Autoimmune Disease, Galapagos

The lead compound, GLPG0634, is the first JAK1 selective compound that has demonstrated clinical efficacy and a favorable safety profile in two Phase IIA clinical studies in patients with rheumatoid arthritis. Discovery and SAR of the series will be presented.

10:35 Drug Discovery Strategy for the Identification of Potent and Selective RIP2 Kinase Inhibitors

Linda CasillasLinda Casillas, Ph.D., Senior Scientific Investigator, Immuno-Inflammation Medicinal Chemistry, GlaxoSmithKline

RIP2 kinase plays a key signaling role downstream of the pattern recognition receptors (PRRs) NOD1 and NOD2.  These PRRs have been linked to various auto-inflammatory conditions including an ultra-rare disease known as Blau Syndrome.  Combining a broad screening strategy with rigorous lead optimization of multiple chemotypes in parallel, we have identified several potent and selective RIP2 inhibitors.  This presentation will highlight some of the significant challenges and creative solutions that arose during this discovery program.

11:05 Novel Orally Active Anti-inflammatory Compound: Phosphatidylinositol 3-phosphate 5-kinase (PIKfyve) Inhibitor

Takashi Yamamoto, Ph.D., Senior Researcher, External Research Alliance and Innovation Team Leader Research Institute, Ajinomoto Pharmaceuticals Co., Ltd.

We discovered that a potent, highly selective, ATP-competitive PIKfyve kinase inhibitor can block IL-12/23 production in vitro and ameliorated inflammation in an experimental model of colitis. The structure–activity relationship study on our PIKfyve inhibitors, their pharmacological profiles in vitro and in vivo, and the biological characterization of PIKfyve kinase as an anti-inflammatory drug target will be presented.”

11:35 Lunch on Your Own 

12:05 pm Session Break

 

TARGETING PROTEIN-PROTEIN INTERACTIONS FOR INFLAMMATION 

1:15 Chairperson’s Remarks

Christopher R Smith, Ph.D., Director, Chemistry, Takeda California


1:20 Epigenetic BET Inhibitors and Inflammation

Gerald DenisGerald Denis, Ph.D., Associate Professor, Cancer Center, Boston University School of Medicine

The BET family of related proteins, comprised of BRD2, BRD3, BRD4 and BRDT, has recently been shown to co-activate NFkappaB-regulated cytokine genes, and to play opposite roles in cancer and HIV latency. Small molecule BET inhibitors ablate cytokine transcription, but are not selective for any co-expressed isoform. Lack of selectivity is a benefit in some cases and a hazard in others. Experiments to probe mechanism should now advance this field.

1:50 Targeting Argenine Deaminases (PADs) and Methyl Transferases for Inflammation

PaulThompsonPaul R. Thompson, Ph.D., Associate Professor, Department of Chemistry, TSRI, Scripps Florida

The Protein Arginine Deiminases (PADs) are important regulators of extracellular trap formation and gene transcription, whose activity is upregulated in multiple inflammatory diseases, including rheumatoid arthritis, lupus, and cancer. Herein, I discuss PAD inhibitor development and our success in validating the PADs as therapeutic targets for multiple inflammatory diseases. Additionally, I describe our efforts to develop citrulline-specific probes that are used to visualize and isolate citrullinated biomarkers of disease.

2:20 Selected Poster Presentation

2:35 Refreshment Break in the Exhibit Hall with Poster Viewing

 

Targeting PPIs for Inflammation 
(shared session with Protein-Protein Interactions) 

3:20 Conventional vs. Unconventional Approaches to JNK inhibition for Inflammation

Yoshi Satoh, Ph.D., Senior Principal Scientist, Medicinal Chemistry, Celgene Corp

This presentation covers discovery of ATP competitive JNK inhibitors and alternative approaches including inhibition at a PPI site, and the inhibitors' use in combating fibrosis.

3:50 Disrupting NRF2 and Keap1 Protein Interaction with Non-Covalent Inhibitors

Laura SilvianLaura Silvian, Ph.D., Principal Scientist, Physical Biochemistry, Biogen Idec

Keap1 binds to the Nrf2 transcription factor to enable its ubiquitination; blocking this interaction would upregulate genes that protect against oxidative stress. Cell-active compounds that modify cysteines in Keap1 effect the Nrf2-dependent pathway. We have identified and characterized non-covalent compounds that bind to the Keap1 Kelch-DC domain and block Nrf2 binding. The non-covalent inhibition strategy presents a reasonable course of action to avoid toxic side effects due to non-specific cysteine modification.

4:20 Session Break

 

4:30 Plenary Keynote Presentation: Drug Discovery for Challenging Targets

James WellsJames Wells, Ph.D., Professor, Pharmaceutical Chemistry and Cellular & Molecular Pharmacology, University of California San Francisco

I will present work from our lab for two classes of challenging targets: protein-protein interfaces and novel allosteric sites, both to activate and inhibit protein function. We use a site-directed fragment-based discovery method, called Tethering, coupled to HTS approaches that are well-suited to probing these challenging surfaces. These approaches have led to the discovery of potent and selective compounds and some with surprising properties that will be discussed.

5:30 Welcome Reception in the Exhibit Hall with Poster Viewing

6:30 Close of Day


Thursday, April 24 - Day 2

 
 

 

7:30 am CONTINENTAL BREAKFAST and BREAKOUT DISCUSSIONS 

In this session, attendees choose a specific roundtable discussion to join. Each group has a moderator to ensure focused conversations around key issues within the topic. The small group format allows participants to informally meet potential collaborators, share examples from their work and discuss ideas with peers.

Topic 1: Developing Kinase Inhibitors for Chronic Indications

Moderator: Linda Casillas, Ph.D., Senior Scientific Investigator, Immuno-Inflammation Medicinal Chemistry, GlaxoSmithKline

•  Utility of kinase selectivity profiling data
• Safety assessment as an experiment rather than a progression gateway
• Integrating PK/PD to predict safety margins

Topic 2: What can medicinal chemists do better to discover safe and effective anti-inflammatory therapeutics?

Moderator: Christopher R Smith, Ph.D.   Director, ChemistryTakeda California

• Next generation kinase inhibitors – opportunities and challenges
• Irreversible versus reversible inhibitors. Will irreversible inhibitors drive a boost in approvals?
• COPD; inhaled versus oral therapies – opportunities and challenges

Topic 3: Anti-inflammatories: Promises and Expectations

Moderator: Seng-Lai “Thomas” Tan, Ph.D., Head, Cellular and Translational Immunology, EMD Serono Research and Development Institute, Inc.

• Targeted delivery challenges
• Phenotypic screening approaches
• Small molecules v. antibody therapeutics
 

NEW APPROACHES FOR INFLAMMATION 

8:40 Chairperson’s Remarks

Alec Lebsack, Ph.D., Associate Scientific Director, Immunology Chemistry, Janssen Research & Development

8:45 Chemokine Receptors and Inflammation

Dan Dairaghi, Ph.D., Senior Director, Molecular Pharmacology and Biomarkers, ChemoCentyrx

The chemokine system, including chemokines and chemo-attractants, directs inflammatory responses, serving to precisely coordinate immune system cell movement. As drivers of the inflammatory response, chemokines and their receptors present opportunities for the development of new therapies. Each of ChemoCentryx’s novel small molecule drug candidates is designed to target a specific chemokine receptor, thereby blocking the inflammatory response driven by that particular chemokine while leaving the rest of the immune system unaffected.

9:15 Targeting the Immunoproteasome

Dustin McMinn, Ph.D., Associate Director, Medicinal Chemistry, Onyx Pharmaceuticals

Selective inhibition of the immunoproteasome (iP) inhibits cytokine production and alters T cell plasticity yet with no effect on cell survival. ONX-0914, a selective inhibitor of the β5i subunit of iP, is efficacious in autoimmune disease models. Computational modeling reveals a related analogue, PR-924, adopts a distinct binding mode that enhances β5i selectivity. Data potentiating our design of lead structures with excellent selectivity for the immunoproteasome will be presented.

9:45 Coffee Break in the Exhibit Hall with Poster Viewing

10:30 Oral Peptide Therapies for Inflammation

David LiuDavid Y. Liu, Ph.D., CSO, Protagonist Therapeutics, Inc.





11:00 Discovery and Synthesis of FLAP Inhibitors for the Treatment of Inflammatory Diseases

Alec LebsackAlec Lebsack, Ph.D., Associate Scientific Director, Immunology Chemistry, Janssen Research & Development

Leukotrienes play a critical role in both acute and chronic inflammation, and 5-lipoxygenase-activating protein (FLAP) is a key protein involved in leukotriene biosynthesis.  Previous programs targeting the nuclear membrane protein FLAP have been hampered by the lack of potency, developability challenges, and the potential for drug-drug interactions (DDI). This presentation will describe several approaches to small molecule lead generation for the Janssen FLAP inhibitor program. The positive differentiation from known FLAP inhibitors and structure-activity relationships for select series obtained from these approaches will be presented.

11:30 Novel Selective Inhibitors of Nuclear Export (SINE) are Highly Effective in Models of Autoimmune Diseases

RobertCarlsonRobert Carlson, Ph.D., Vice President, Preclinical Development and Product Leadership, Karyopharm Therapeutics

Exportin 1 (XPO1) is a protein that controls nuclear export of over 200 cargo proteins. Selective Inhibitors of Nuclear Export (SINE) are XPO1 inhibitors that kill cancer cells through nuclear retention and activation of tumor suppressor proteins. SINEs also force nuclear retention of proteins that play key roles in inflammation. In this talk, the efficacy of SINEs in models for a variety of autoimmune diseases will be reviewed.

12:00 pm Close of Track



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