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Pancreatic Cancer is the fourth leading cause of cancer death in men and women in Western societies. Nothing, apart from surgery in a small proportion of individuals gives any hope. The identification of novel treatment strategies in the modern era necessitates a rational scientific approach, where an understanding of the molecular mechanisms involved in the evolution of cancer underpins the development of such strategies in an efficient manner. Retinoids are derivatives of Vitamin A, and have b ....Pancreatic Cancer is the fourth leading cause of cancer death in men and women in Western societies. Nothing, apart from surgery in a small proportion of individuals gives any hope. The identification of novel treatment strategies in the modern era necessitates a rational scientific approach, where an understanding of the molecular mechanisms involved in the evolution of cancer underpins the development of such strategies in an efficient manner. Retinoids are derivatives of Vitamin A, and have been used extremely successfully in the treatment of some leukaemias. Unfortunately, retinoids have not worked as well in other cancers. We have identified an important role for abnormal retinoid function in the evolution of pancreatic cancer, which may be responsible for the lack of effective response to retinoid treatment. This project focuses on identifying if these abnormalities in retinoid function can be reversed with adding specific pharmaceuticals so that retinoid based therapies will be effective in pancreatic cancer.Read moreRead less
The Role Of Wheat Gluten In The Genesis Of Gastrointestinal Symptoms And Fatigue In Patients With Non-coeliac Gluten Intolerance.
Funder
National Health and Medical Research Council
Funding Amount
$686,242.00
Summary
Currently �gluten- and wheat-intolerances� are poorly recognised by the medical profession and yet many Australians who do not have coeliac disease claim to be wheat- or gluten-intolerant. The most common complaints relate to chronic fatigue and gut symptoms such as wind and bloating. Our research team have new and recent evidence that wheat-gluten does trigger symptoms in some patients who suffer from Irritable Bowel Syndrome. This project aims to improve our understanding in this area.
This project aims to develop a new therapy for colorectal cancer (CRC). We have already demonstrated that a molecule called PAK1 is the master regulator of several intracellular signalling pathways, and is essential for CRC growth and invasion. We now plan to study whether inhibitors that block PAK1 activity can prevent the growth of human CRC cells in the laboratory or their development into tumours in animals.
CpG Island Methylation In Microsatellite Stable Colorectal Cancers: Epigenetics Or Epiphenomenon?
Funder
National Health and Medical Research Council
Funding Amount
$245,402.00
Summary
For years researchers have known that changes in the sequence of DNA in genes within a cell can lead to cancer, particularly when those changes are passed on to daughter cells. This has lead to massive research interest in the field of cancer genetics. In the last few years, it has become clear that as well as changes in DNA, other more subtle changes can be passed on. These changes, which do not directly involve changes in DNA sequence, are referred to as epigenetic changes. One of the most com ....For years researchers have known that changes in the sequence of DNA in genes within a cell can lead to cancer, particularly when those changes are passed on to daughter cells. This has lead to massive research interest in the field of cancer genetics. In the last few years, it has become clear that as well as changes in DNA, other more subtle changes can be passed on. These changes, which do not directly involve changes in DNA sequence, are referred to as epigenetic changes. One of the most commonly recognised epigenetic changes is known as methylation. Methylation of genes can switch that gene off, meaning that the protein normally made is no longer present in the cell. This can have profound effects on the way cells behave, and importantly may be involved in the development of cancer. In this study, we will look at a group of colorectal cancers that show abnormally high amounts of DNA methylation , to test our hypothesis that these cancers share a common origin that is distinct from the usual type of bowel cancer. The findings will be important, as they may allow us to show that all bowel cancers are not the same, and that simple gene testing may be able to identify the different subtypes. If bowel cancers can be classified according to the way in which they have developed, then this will help us to understand what causes them why some are more aggressive than others, and why some may respond differently to existing or future cancer treatments.Read moreRead less
Studies Of Genetic Predisposition To Develop Serrated Neoplasia In The Colorectum.
Funder
National Health and Medical Research Council
Funding Amount
$308,291.00
Summary
Colorectal Cancer was once believed to develop only from a certain kind of polyp in the colon called the adenoma. However, recently another type of polyp called the hyperplastic polyp was found to also be capable of producing a cancer. In this proposal, we will look at the possibility that the predisposition to form hyperplastic polyps may be inherited in families.
Role Of Gastrin Prohormones In The Development Of Gastrointestinal Cancers
Funder
National Health and Medical Research Council
Funding Amount
$612,885.00
Summary
Gastrin is a stomach hormone which increases acid secretion and the growth of the stomach and bowel. This growth promoting effect may be involved in a number of cancers particularly colon cancer. The different types of gastrin have different effects but we do not know which forms are important and whether all are active. The types and activity of different gastrins will be investigated using cell lines, animal models and colon cancer patients with the view of establishing new treatments.
Defining Iron And Haem-induced Pro-carcinogenic Pathways Of Colorectal Cancer
Funder
National Health and Medical Research Council
Funding Amount
$566,277.00
Summary
Colorectal cancer is very common in Western society. Population studies have reported that high consumption iron-containing foods and red meat, the latter being a source of both haem and iron, are risk factors for colorectal cancer. This study will identify the levels of dietary haem and iron that promote colorectal cancer development. Also, it will determine the mechanisms and relative contribution of iron and haem to pro-carcinogenic pathways that result in colorectal cancer.
Determinants Of Sustained Virological Response After Discontinuation Of Long-term Nucleoside Analogue Therapy In Chronic Hepatitis B Patients
Funder
National Health and Medical Research Council
Funding Amount
$976,778.00
Summary
Guidelines currently recommend lifelong treatment for patients with chronic hepatitis B, with associated cost and risks of drug resistance and side effects. It has recently been suggested that up to 50% of patients may safely and successfully stop drug after long-term treatment. Our project will identify which patients can safely stop treatment, by performing detailed studies of the human immune system and the hepatitis B virus. This will be an important advance for patient care.
Characterization Of ARL6IP5 In Hepatitis C-related Liver Cancer
Funder
National Health and Medical Research Council
Funding Amount
$505,283.00
Summary
The incidence and mortality from liver cancer is increasing rapidly in Australia, and hepatitis C virus infection is the most common cause. How hepatitis C leads to liver cancer is largely unknown. We identified a novel gene termed ARL6IP5 that appears to be specifically increased in liver tissue by chronic hepatitis C infection. In this project we will characterize the involvement and role of this gene in liver cancer development. Knowledge gained from this study will help us understand how hep ....The incidence and mortality from liver cancer is increasing rapidly in Australia, and hepatitis C virus infection is the most common cause. How hepatitis C leads to liver cancer is largely unknown. We identified a novel gene termed ARL6IP5 that appears to be specifically increased in liver tissue by chronic hepatitis C infection. In this project we will characterize the involvement and role of this gene in liver cancer development. Knowledge gained from this study will help us understand how hepatitis C leads to cancer.Read moreRead less
Molecular Markers Of The Progression Of Intestinal Metaplasia To Gastric Cancer
Funder
National Health and Medical Research Council
Funding Amount
$556,618.00
Summary
Gastric cancer (GC) is the second most common cause of cancer-related death globally. It is a surgically treatable disease that has good prognosis if detected at an early stage. The majority of patients in our community are detected at a late stage, where less than 20% of patients survive 5 years. The majority of GC is preceded by distinct histological stages that follow a progression from gastric mucosal inflammation, intestinal metaplasia (IM) and eventually cancer. These stages are characteri ....Gastric cancer (GC) is the second most common cause of cancer-related death globally. It is a surgically treatable disease that has good prognosis if detected at an early stage. The majority of patients in our community are detected at a late stage, where less than 20% of patients survive 5 years. The majority of GC is preceded by distinct histological stages that follow a progression from gastric mucosal inflammation, intestinal metaplasia (IM) and eventually cancer. These stages are characterised by genetic events that are largely unknown and occur over a period that can take years. It is also evident, especially in countries where GC is not as prevalent, that only a proportion of individuals will eventually develop GC. The long latency from the develpoment of IM and diagnosis of GC offers an opportunity to intervene and study the changes that lead to GC as well as find genes that may predict which individuals will progress. IM is the stage in which intervention is obvious. It is very easily diagnosed, is present for a long time and, for certain individuals, will eventually accumulate enough genetic events that will mandate progression to GC. Targeted screening of these individuals will enable a feasible strategy to find early GC, and avoid costly non-targeted screening. This proposal seeks to find key genetic events responsible for the transition of IM to GC. The first step utilises Affymetrix arrays to detect genes expressed in IM and specifically linked to GC. These candidates will be validated and used to study their role in the progression to GC using a mouse model of GC. This study is designed to find genes responsible for GC that can be used as: 1) a marker of progression in humans that will be used as a tool to stratify individuals into a screening protocol; 2) candidates to be tested in animal studies to study the pathogenesis of GC and potentially used as preventative or therapeutic targets.Read moreRead less