Infectious And Lifestyle Determinants Of Non-melanoma Skin Cancer.
Funder
National Health and Medical Research Council
Funding Amount
$983,711.00
Summary
Basal and squamous cell skin cancers are the leading cancers in Australia, with about 2% of the population developing them each year. As well as sun exposure, a number of other factors have been thought to effect these cancers. This study will examine if factors such as smoking, alcohol consumption and infection with certain skin related human papillomaviruses also increase their risk. Even a small effect may make a big difference when it comes to preventing these common cancers.
My work on human pigmentation genetics has provided a framework to understand normal variation in this physical trait and the associated genotypic risk factors for skin cancer development. The genes that determine an individual's skin phototype and the ce
Determination Of An Action Spectrum For Ultraviolet Radiation-induced Immunosuppression In Humans
Funder
National Health and Medical Research Council
Funding Amount
$213,500.00
Summary
Ultraviolet (UV) radiation causes mutations in the skin which can develop into cancers many years later. The skin's immune system is an important defence that prevents most potentially cancerous cells from developing into skin tumours. UV also suppresses skin immunity, allowing cancer cells to proliferate unchecked. There is also evidence that this UV-induced immunosuppression may have important effects on infectious diseases such as herpes virus, leprosy and tropical ulcers. Sunlight contains U ....Ultraviolet (UV) radiation causes mutations in the skin which can develop into cancers many years later. The skin's immune system is an important defence that prevents most potentially cancerous cells from developing into skin tumours. UV also suppresses skin immunity, allowing cancer cells to proliferate unchecked. There is also evidence that this UV-induced immunosuppression may have important effects on infectious diseases such as herpes virus, leprosy and tropical ulcers. Sunlight contains UVB, which causes sunburn, and UVA. Until recently, UVA was thought to have little effect on skin immunity. We have previously shown that both broadband UVB and UVA are immunosuppressive, even after single exposures equivalent to 8 minutes of sunlight. It is not known which UVA wavelengths are most immunosuppressive. These studies will use a xenon arc solar simulator and a series of interference filters to produce narrow UVB and UVA wavebands. The effects of these wavebands on humans can be studied by deliberately eliciting immune responses to substances which volunteers are already sensitive to. One model of skin immunity in these studies is allergy to nickel (in earrings and costume jewellery), which affects 10% of women. The volunteers' backs are exposed to different UV wavelengths, and then nickel patches are taped to both the UV-exposed areas and adjacent, unexposed areas. By comparing the intensity (redness and thickness) of these nickel reactions, immunosuppression caused by each waveband can be measured. Similarly, the Mantoux reaction (in people vaccinated against tuberculosis) provides another, complementary model of skin immunity. Knowledge of the immune effects of different UV wavelengths (an action spectrum for UV immunosuppression) would improve understanding of skin cancer and enable development of better sunscreens, which currently offer only partial immune protection.Read moreRead less
Effects Of Nevogenesis Susceptibility Genes And Phenotypic Correlation With Dermoscopic Characteristics Of Nevi
Funder
National Health and Medical Research Council
Funding Amount
$554,099.00
Summary
Melanoma is a form of skin cancer that arises from the cells that produce pigment and is a major public health issue in Australia. We will examine the relationship between the form, structure and colour of existing types of moles and their subsequent risk of developing into melanoma. This will be the first study to combine dermoscopy, a non-invasive examination technique, with DNA tests of the genes that determine skin, hair and eye colour, aiding in the early prediction and diagnosis of skin ca ....Melanoma is a form of skin cancer that arises from the cells that produce pigment and is a major public health issue in Australia. We will examine the relationship between the form, structure and colour of existing types of moles and their subsequent risk of developing into melanoma. This will be the first study to combine dermoscopy, a non-invasive examination technique, with DNA tests of the genes that determine skin, hair and eye colour, aiding in the early prediction and diagnosis of skin cancer.Read moreRead less
Overcoming Resistance Of Human Metastatic Melanoma To Treatment
Funder
National Health and Medical Research Council
Funding Amount
$727,758.00
Summary
Melanoma is a major Australian health problem, but there is no curative treatment once the disease spreads beyond the skin. I have been working on “overcoming resistance of melanoma to treatment” continuously for 10 years. My past research has provided a number of insights into the resistance of melanoma to treatment. I wish to extend my work to find new treatment approaches against the disease. If successful, this work will greatly benefit melanoma patients and Australian people.
The mechanisms controlling cell growth are often disrupted in cancers. Here we will investigate a fundamental mechanism that ensures that every daughter cells receives identical copies of DNA. This control mechanism also appears to have a key role in protecting the cells that continuously repopulate the epidermal layer ofthe skin that are target for ultraviolet radiation induced mutation that lead to skin cancers. This mechanism is inoperative in cells derived from skin cancers, indicating that ....The mechanisms controlling cell growth are often disrupted in cancers. Here we will investigate a fundamental mechanism that ensures that every daughter cells receives identical copies of DNA. This control mechanism also appears to have a key role in protecting the cells that continuously repopulate the epidermal layer ofthe skin that are target for ultraviolet radiation induced mutation that lead to skin cancers. This mechanism is inoperative in cells derived from skin cancers, indicating that mutation of components of this mechanism must have occurred. These mutations, and the loss of this normally protective control mechanism are likely to contribute to either an increased risk of skin cancer, or to the increased malignant spread of the diseases.Read moreRead less
Targeted Redox Therapy For Photoageing Prevention And Treatment
Funder
National Health and Medical Research Council
Funding Amount
$562,815.00
Summary
Our goal is to target natural reduction/oxidation (redox) modifiers, i.e. niacin and sulforaphane, to the skin deeper layers to treat photoageing. Both drugs have been separately shown to prevent UV induced skin cancer. The outcomes of this project will be safer and more effective prevention and treatment of sun damaged skin. This project can provide health benefits to Australians from improved treatment of sun damage, and economic benefits to the nation.
Effects Of A Novel Hotspot Mutation Of Brm In Non-Melanoma Skin Cancer Development
Funder
National Health and Medical Research Council
Funding Amount
$92,314.00
Summary
Australia has the highest incidence of skin cancer in the world. SWI/SNF, a yeast nucleosome remodeling complex, is known destabilise interactions in DNA. It is made up of 8-10 proteins, including a novel tumour suppressor Brm. There is some evidence that Brm acts as a tumour suppressor in skin cancer, but relevance of a recently found mutation in Brm is yet to be characterised. This project aims to identify the effect of this mutation, on cellular sensitivity to UV radiation and examine transfo ....Australia has the highest incidence of skin cancer in the world. SWI/SNF, a yeast nucleosome remodeling complex, is known destabilise interactions in DNA. It is made up of 8-10 proteins, including a novel tumour suppressor Brm. There is some evidence that Brm acts as a tumour suppressor in skin cancer, but relevance of a recently found mutation in Brm is yet to be characterised. This project aims to identify the effect of this mutation, on cellular sensitivity to UV radiation and examine transformation to malignancy.Read moreRead less
Practice- And Policy-relevant Research In Skin Cancer Epidemiology, Prevention And Screening
Funder
National Health and Medical Research Council
Funding Amount
$483,402.00
Summary
This Fellowship will enable me to lead an internationally-competitive program of research in skin cancer epidemiology, prevention & screening that will lead to improved patient and population health through impacts on clinical practice and health policy. My aim is to lead paradigm-shifting contributions in: ? Genetic epidemiology of melanoma, ? Precision skin cancer prevention & screening, and ? Public health genomics for cancer prevention.
Topical Drug Delivery Based On Porous Silicon Nanoneedles
Funder
National Health and Medical Research Council
Funding Amount
$318,768.00
Summary
There are currently a number of new drugs that can only be administered through the skin via hypodermic needles, which is costly, invasive and carries the risk of infection spread. This project proposes to develop an alternative strategy based on skin patches covered in millions of microscopic porous needles. These needles are able to puncture the skin painlessly to provide rapid and minimally-invasive administration of drugs for treatment of skin diseases, such as melanoma or psoriasis.