Research Fellowship: Understanding G Protein-coupled Receptors (GPCRs)
Funder
National Health and Medical Research Council
Funding Amount
$444,177.00
Summary
This project focuses on drug action at G protein-coupled receptors (GPCRs), the largest class of drug targets. It builds on key discoveries by the applicant that novel sites on GPCRs can be targeted by small molecules in a selective manner, thus minimizing side effects and maximizing therapeutic efficacy. Because this approach can work across most GPCR families, the relevance to the pharmaceutical industry and GPCR-related diseases, such as schizophrenia and diabetes, is very high.
Dementia is the third leading cause of death in Australia and the single greatest cause of disability in the elderly. Current therapies for Alzheimer’s disease (AD), the most common form of dementia, are inadequate and fundamentally new treatment approaches are required. The aim of this proposal is to develop novel drug candidates for the treatment and prevention of AD and other neurodegenerative disorders by targeting a class of cell-surface receptors called G protein-coupled receptors (GPCRs).
G protein-coupled receptors are proteins that exist on every human cell, where they sense, and respond to environmental stimuli. Because of their importance they are targeted by drugs to treat many diseases. However little is known about how drugs activate these receptors and this has hindered new drug development. I use state-of-the-art technology to determine how drugs activate receptors and develop new methods for drug discovery. This work will have major impact on the Pharmaceutical industry
Neuropathic pain is particularly difficult to treat and existing medications have considerable side effects. This project will develop a new set of glycine transport inhibitors that have the potential to provide pain relief without side effects.
Novel Analogues Of Human INSL3 As Antagonists And Probes Of Testicular Function
Funder
National Health and Medical Research Council
Funding Amount
$593,888.00
Summary
The hormone, insulin-like peptide 3, has recently been shown to act directly on male and female germ cells to cause their maturation. It has considerable promise as a therapeutic agent for the regulation of fertility. Drugs based on the peptide may be used to assist in cases of infertility, and drugs that block its action have great potential as male and female contraceptives. Towards these goals, our project aims to understand how this peptide exerts its unique biological effects.
Bitopic Ligands As A Novel Approach To G-protein-coupled Receptor Selectivity
Funder
National Health and Medical Research Council
Funding Amount
$540,356.00
Summary
This project will focus on two important types of brain proteins that have been implicated in various symptoms associated with schizophrenia. The aim is to exploit a new paradigm of drug action that we have discovered, whereby novel compounds can be utilized to simultaneously target multiples sites on these brain proteins, in an effort to discover new mechanisms that can promote more selective signalling and, ultimately, can be used to design safer and more effective medicines.
Exploring The Pluridimensionality Of Drug Efficacy.
Funder
National Health and Medical Research Council
Funding Amount
$326,184.00
Summary
Dysfunction of cell surface receptors is the underlying cause of many pathological conditions. Using cell based screening methods we aim to investigate the mechanisms underlying drug action, to understand how drugs acting at common targets promote distinct biological responses. This will aid the development of new therapeutics based on the ability to predict specific drug effects.
Resolving And Targeting The Complex Molecular Mechanisms Underlying GPCR Signalling
Funder
National Health and Medical Research Council
Funding Amount
$1,071,370.00
Summary
Receptors are located on the surface of all human cells to allow our cells to respond to their environment. Over 30% of prescription drugs act through particular receptors called GPCRs, however effective drugs without side effects are difficult to develop because we do not have a deep understanding of how GPCRs transmit complex signals. In this proposal we seek to resolve the atomic-level details of GPCR signalling to assist in the development of better drugs for a diverse range of diseases.
Defining The Mechanisms Of Action For Ozonide Antimalarials
Funder
National Health and Medical Research Council
Funding Amount
$668,152.00
Summary
Deadly malaria parasites have emerged that are resistant to all classes of approved drugs. Ozonides are a new class of medicines recently approved for malaria, and provide a much-needed treatment option for multi-drug resistant infections. However, the mode of action and potential for cross-resistance is poorly understood. This project will use modern analytical techniques to measure the impact of ozonides on parasite biochemistry to reveal mechanisms involved in drug action and resistance.
Pharmacological Targeting Via AKT, PTEN, And TGF-beta Pathway Integration Using Novel Therapeutics
Funder
National Health and Medical Research Council
Funding Amount
$634,875.00
Summary
We have identified potentially important interactions of cellular pathways that vary between individual sufferers, but which also provide common molecular targets for novel drug development. Our suite of novel and potent drugs that markedly and selectively inhibit cancer cell growth will be studied to determine if these pharmaceutical agents act to inhibit tumour cell proliferation by targeting common effector molecules of integrated cellular pathways.