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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
Advances in mobile telephone technology and available dermoscopic attachments (which provide a good light and magnification) for mobile telephones have created a unique opportunity for mobile teledermoscopy. This study will test whether and how it can be integrated into the workflow of dermatologists to improve the early detection of skin lesions suspicious of melanoma.
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
Muir Torre Syndrome: The Role Of IHC And Genotyping In Sebaceous Neoplasia To Facilitate Prevention Strategies In Colorectal And Endometrial Cancer
Funder
National Health and Medical Research Council
Funding Amount
$396,786.00
Summary
Sebaceous neoplasia (SN), may be an early warning sign for Lynch syndrome (LS), an inherited cancer predisposition caused by mutations in a group of genes. There are high lifetime risks of bowel and uterine cancer, for which there are effective risk management plans if the risk is known. Clinicians are challenged by the role of SN in identifying LS. At present, it is hard to differentiate. We aim to determine features to improve the diagnosis of LS carriers.
Influence Of Skin Cancer On Topical Elongate Microparticle Drug Delivery
Funder
National Health and Medical Research Council
Funding Amount
$560,589.00
Summary
This project builds on a novel cutaneous delivery method using ‘rod-shaped’ microparticles we developed in the Dermatology Research Centre. Microparticle administration results in multiple punctures of the skin’s tough outer layers, increasing permeability. Furthermore, microparticle administration results in a uniform and continuous drug delivery profile within the treatment area, which is an important attribute for the treatment of skin diseases.
Investigating The Utility Of Primary Care Skin Cancer Clinics In Queensland
Funder
National Health and Medical Research Council
Funding Amount
$187,000.00
Summary
Skin cancer is the most common cancer in Australia, with an estimated 375,000 people being treated for some skin cancer in Australia in 2002, and 1462 dying from the disease (mainly from melanoma) in 2001. Australia has the highest rate of skin cancer, both melanoma and non-melanoma is the world. However, if detected early, skin cancer is curable, and the focus of current treatment programs internationally is to detect the disease before it progresses to an advanced stage. A large proportion of ....Skin cancer is the most common cancer in Australia, with an estimated 375,000 people being treated for some skin cancer in Australia in 2002, and 1462 dying from the disease (mainly from melanoma) in 2001. Australia has the highest rate of skin cancer, both melanoma and non-melanoma is the world. However, if detected early, skin cancer is curable, and the focus of current treatment programs internationally is to detect the disease before it progresses to an advanced stage. A large proportion of skin cancers are first detected by the non-medical community. However, due to the two-tiered medical system in Australia, a person first seeks medical opinion from a general practitioner (GP), who acts as a gatekeeper for further treatment from a specialist. Therefore the ability of GPs to be able to discern which lesions require further treatment is crucial, both for the patient, and the financial burden on the health system. A recent development has been the establishment of dedicated primary skin care clinics, which offer open access consultations to the community for the diagnosis and treatment of skin cancers and pigmented lesions. The emergence of these clinics has created much debate in the medical media. Concern has been expressed about the skills of practitioners in these clinics, whilst others argue that sub-specialisation in primary care will lead to improvements in the management of patients. As there is currently no data on the volume, casemix and diagnostic accuracy of these clinics it is difficult to assess the diagnostic ability of skin cancer clinics. This will be the first project to quantify the role of skin clinics in the diagnosis of skin cancer in the community, and in particular their case volume, casemix and diagnostic accuracy, and assess these measures in relation to a comparable sample of general practitioners. Queensland is an ideal location for a study of this type due to its high incidence of both types of skin cancer.Read moreRead less
The Role Of MIC-1 In The Promotion And Progression Of Skin Squamous Cell Carcinoma.
Funder
National Health and Medical Research Council
Funding Amount
$237,258.00
Summary
Skin cancers are the most common human tumours and the incidence is increasing. Ultra-violet (UV) light is the main factor in the formation of skin cancer. This project will find how a gene product (MIC-1) induced by solar UV affects the skin, and why we see it in skin cancers. This protein has other interesting properties that could bear directly on measuring sun exposure and understanding skin cancer. A processed form is released into the blood, where it could carry UV signals and be used in p ....Skin cancers are the most common human tumours and the incidence is increasing. Ultra-violet (UV) light is the main factor in the formation of skin cancer. This project will find how a gene product (MIC-1) induced by solar UV affects the skin, and why we see it in skin cancers. This protein has other interesting properties that could bear directly on measuring sun exposure and understanding skin cancer. A processed form is released into the blood, where it could carry UV signals and be used in population studies as a measure of sun exposure. It's also induced by certain cancer-promoting chemicals which resemble UV light in their immediate effects. A lot could therefore be learnt from this protein, and if we find that MIC-1 promotes the growth of normal and tumour cells in the skin after UV exposure, we can look for ways to stop this happening.Read moreRead less
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
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