Characterisation Of The Cellular Changes Induced By Ultraviolet A Radiation
Funder
National Health and Medical Research Council
Funding Amount
$448,500.00
Summary
Sunlight is an important environmental health hazard as it causes immunosuppression and cancer. It suppresses our ability to destroy developing cancers. Australia has the highest incidence of skin cancer in the world, 66% of Australians develop skin cancer during their lifetime. The relationship between UV dose, wavelength and cancer in humans is unknown. As this cannot be directly experimentally determined in humans, surrogate biological endpoints such as immunosuppression will help determine t ....Sunlight is an important environmental health hazard as it causes immunosuppression and cancer. It suppresses our ability to destroy developing cancers. Australia has the highest incidence of skin cancer in the world, 66% of Australians develop skin cancer during their lifetime. The relationship between UV dose, wavelength and cancer in humans is unknown. As this cannot be directly experimentally determined in humans, surrogate biological endpoints such as immunosuppression will help determine the damaging wavebands within sunlight. There has been little work on the effect of UVA on health or the mechanisms of action of UVA compared to UVB. A recent consensus UVA working group of 80 international participants convened by the American Academy of Dermatology out of concern about the lack of knowledge of UVA on human health concluded that the action spectrum for photocarcinogenesis and photoageing, particularly the efficacy of UVA in humans remains to be elucidated, and that more funding should be provided for radiation biology research to help elucidate UVA mechanisms of injury. Similarly a recent expert meeting (including Prof. Halliday) convened by the International Agency for Research on Cancer (WHO) on sunscreen protection from skin cancer recommended that studies should be conducted on the effects of exposure to UVA in causing both photoageing and skin cancer which followed from their major recommendation that it is important to understand the nature of the dose-response relationship on risk and the action spectrum for each effect . The studies described in this project will contribute to these recommendations.Read moreRead less
The Centre for Research Excellence in Sun and Health (CRESH) aims to build an evidence base that will lead to the development of regionally appropriate public health guidelines that will balance the adverse and beneficial effects of sun exposure to optimise the health of the Australian community.
Effect Of Ultraviolet Radiation On Development Of Effector And Memory T Cells To Melanoma
Funder
National Health and Medical Research Council
Funding Amount
$498,328.00
Summary
Australia has the highest incidence of skin cancer in the world, due to our lifestyle that involves high levels of exposure to sunlight. Skin cancer, including melanoma can be destroyed by the immune system, but sunlight inhibits immunity, enabling skin tumours to grow. Our aim is to determine how sunlight affects the activation of effector anti-melanoma T cells, and their development into memory T cells, and the dose of sunlight required to have this effect. It is unknown whether ultraviolet ra ....Australia has the highest incidence of skin cancer in the world, due to our lifestyle that involves high levels of exposure to sunlight. Skin cancer, including melanoma can be destroyed by the immune system, but sunlight inhibits immunity, enabling skin tumours to grow. Our aim is to determine how sunlight affects the activation of effector anti-melanoma T cells, and their development into memory T cells, and the dose of sunlight required to have this effect. It is unknown whether ultraviolet radiation in sunlight suppresses the activation of effector cells that mediate rejection of skin tumours, or their development into memory cells, or migration of activated-memory lymphocytes into skin tumours. The number of antigen reactive T cells is a key issue for tumour immunity and the aim of many clinical immunotherapy trials is to boost these to levels that can effectively destroy the tumour. It is important to establish whether low doses of sunlight readily achievable during normal living, or only higher exposures received when sunbaking, inhibit the number of these effector T cells, and their migration into skin tumours. It is important to determine whether there is a relatively safe threshold level of sunlight exposure to be able to give better advice on sunlight doses that can be achieved without causing serious deleterious health effects. Also these levels of sunlight may interfere with immunotherapy trials and therefore need to be determined. An additional outcome will be to determine whether chemopreventative agents that enhance recovery from sunlight induced suppression of skin allergies are also protective for anti-tumour immunity. The establishment of procedures for prevention of suppression of anti-tumour immunity may enhance the number of T cells activated by natural immunity or during immunotherapy, thereby improving immune rejection of melanoma.Read moreRead less
Epidemiology Of Human Papillomavirus (Hpv), Ultraviolet (UV) Radiation In Relation To Non-Melanoma Skin Cancer
Funder
National Health and Medical Research Council
Funding Amount
$300,000.00
Summary
Queensland epidemiologist, Professor Adele Green is the winner of an Australian-European Union medical research grant that she will use to investigate prevention of skin cancer. The prestigious NHMRC grant is intended to support Australian researchers involved in European collaboration, which will benefit the Australian community. Professor Green and her research group will use the grant to participate in a large consortium led by Dr Jan Nico Bouwes Bavinck from Leiden in the Netherlands, with t ....Queensland epidemiologist, Professor Adele Green is the winner of an Australian-European Union medical research grant that she will use to investigate prevention of skin cancer. The prestigious NHMRC grant is intended to support Australian researchers involved in European collaboration, which will benefit the Australian community. Professor Green and her research group will use the grant to participate in a large consortium led by Dr Jan Nico Bouwes Bavinck from Leiden in the Netherlands, with teams of researchers based in Germany, England, Italy and France. The work of the consortium will focus on finding out whether Human Papilloma Virus plays a role in causing skin cancer. Professor Green and her team are working to discover the relationship between Human Papilloma Virus, which is a common virus of the skin and the commonest types of skin cancer. If the papilloma virus is found to cause skin cancer, this will open up new avenues for prevention. Although Australia is a world hot-spot for skin cancer, the disease is of concern to Europeans because it is the most common form of cancer in white-skinned people.Read moreRead less
Melanomas are common cancers arising from the pigment cells of the skin. Sunlight is the principal environmental causal factor for this group of cancers, although there is increasing evidence that the effect of sunlight on the pigment cells is not the same for all people. We aim to answer the question. Does host phenotype predict the response of melanocytes to sunlight and in so doing, contribute information that may assist the development of effective prevention strategies
Exploring The Causal Pathways To Cutaneous Melanoma
Funder
National Health and Medical Research Council
Funding Amount
$159,171.00
Summary
Melanomas are cancers arising from the pigment cells of the skin, and are among the most commonly occurring cancers in this country. Each year, more than 8000 Australians are diagnosed with invasive melanoma, resulting in some 900 deaths annually. Survival from melanoma is high if the disease is detected early (5 yr survival for thin melanomas-94%), however survival rates for thicker tumours are significantly worse, and for metastatic disease, very poor (<10%). Sunlight is the principal facto ....Melanomas are cancers arising from the pigment cells of the skin, and are among the most commonly occurring cancers in this country. Each year, more than 8000 Australians are diagnosed with invasive melanoma, resulting in some 900 deaths annually. Survival from melanoma is high if the disease is detected early (5 yr survival for thin melanomas-94%), however survival rates for thicker tumours are significantly worse, and for metastatic disease, very poor (<10%). Sunlight is the principal factor which causes this disease, although there is increasing evidence that the role of sunlight in causing melanoma is not the same for all people who develop this disease. A new hypothesis proposes that the malignant course of melanomas may reflect their causal origins, with melanomas induced by chronic sunlight exposure perhaps being more aggressive than other melanomas. We will undertake a large study of patients with melanoma to investigate both the causal pathways to melanoma and their influence on markers of tumour aggressiveness. We will capture detailed information about the microscopic appearance of the melanomas from pathologists at the time of diagnosis, and marry this to the information reported by the patients about their past history of sun exposure. When complete, this study will provide new information about the causes of melanoma. Such knowledge is crucial to controlling and preventing this cancer.Read moreRead less