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A Novel Tumour Suppressor Function Of E2F7 In Squamous Cell Carcinoma Formation
Funder
National Health and Medical Research Council
Funding Amount
$524,124.00
Summary
squamous cell carcinomas of the skin are the second most common skin cancer. In this proposal we present data showing that a new gene, E2F7, may play an important role in the development of squamous cell carcinoma. If true, these studies will identify a new therapeutic target that could be exploited in developing novel anticancer therapies.
Molecular And Epidemiological Investigation Of Cutaneous Squamous Cell Carcinoma Of The Head And Neck With Perineural Invasion
Funder
National Health and Medical Research Council
Funding Amount
$42,862.00
Summary
Queensland has the highest recorded rates of skin cancer in the world. Invasion into nearby nerves or �perineural invasion� occurs in approximately 5% of cases. This signifies that the tumour is aggressive and able to spread along nerves back to the brain and reduce survival. Why some tumours invade nerves remains unclear. This project will study the factors involved and the characteristics of affected patients to enable a better understanding of the disease and potentially improve treatment.
Stratification Of Therapies In HNSCC Through Discovery Of Molecular Signatures
Funder
National Health and Medical Research Council
Funding Amount
$852,600.00
Summary
Human head and neck cancer is a devastating disease with poor survival rates. Using a unique mouse model, we have now uncovered novel genetic defects that trigger cancer development. These defects are also evident in human cancers. This proposal will utilize this mouse model to explore new treatment strategies based on targeting the genetic defect. Ultimately we anticipate that this will translate into personalized therapies that will favourably alter the course of this cancer.
E2F Inhibitors As Anticancer Agents For Squamous Cell Carcinoma
Funder
National Health and Medical Research Council
Funding Amount
$257,036.00
Summary
Squamous cell carcinoma of the head and neck is one of the six most frequent causes of cancer death worldwide. these tumours are currently treated with surgery, radiotherapy and chemotherapy. Although these treatments are associated with a five year survival rate of between 40% and 60% there is a critical need for more effective and less destructive treatments. In this application we will extend on our earlier work in which we identified the protein E2F1 as being a major contributor to tumour de ....Squamous cell carcinoma of the head and neck is one of the six most frequent causes of cancer death worldwide. these tumours are currently treated with surgery, radiotherapy and chemotherapy. Although these treatments are associated with a five year survival rate of between 40% and 60% there is a critical need for more effective and less destructive treatments. In this application we will extend on our earlier work in which we identified the protein E2F1 as being a major contributor to tumour development. In normal cells, E2F1 is required for the regulated growth of head and neck cells. However, we found that in head and neck tumours, E2F1 is overactive and contributes to the dergulated growth of the tumour. In this project we will test our newly developed inhibitors of E2F1 on various tumour cells derived from head and neck cancers to see how effective they are at stopping tumour cell growth. Furthermore we will test these compounds in animal models of head and neck cancer to determine whether they will be useful therapeutic agents for treatment of human cancer. Early results on tumour cell lines look very promising.Read moreRead less
Identification Of Clinically Significant Subtypes Of Head And Neck Cancer Cells
Funder
National Health and Medical Research Council
Funding Amount
$469,122.00
Summary
Squamous cell carcinoma of the head and neck region (HNSCC) is amongst the top 10 most prevalent cancers. It is a life threatening cancer that is associated with a mortality rate of approximately 40%. Whilst most patients are treated with a combination of surgery, radiation and chemotherapy a significant fraction of patients relapse and eventually succumb to the cancer. The molecular basis for relapse in these patients is still unknown. One possible explanation for treatment failure is the notio ....Squamous cell carcinoma of the head and neck region (HNSCC) is amongst the top 10 most prevalent cancers. It is a life threatening cancer that is associated with a mortality rate of approximately 40%. Whilst most patients are treated with a combination of surgery, radiation and chemotherapy a significant fraction of patients relapse and eventually succumb to the cancer. The molecular basis for relapse in these patients is still unknown. One possible explanation for treatment failure is the notion that the cancer contains biologically distinct subtypes of cancer cells. Some these cells may respond to therapy whilst a small fraction of cells may not. If this small fraction of resistant cells were able to divide and repopulate the tissue then this would provide an explanation for relapse in these patients. However, as yet no such data has been available to support this argument. Most recently, studies with another cancer called acute myelocytic leukaemia has shown that they do contain a small subtype of cancer cells that are resistant to therapy and can regenerate the disease in patients. These cells have been called tumour initiating cells (TIC). In this application we will use patient tumour samples to try to isolate TICs from HNSCC. We will first determine whether these TICs exist and whether they express markers of normal human stem cells. We will also test whether these TICs are more resistant to chemotherapeutics or radiation than the rest of the tumour cells. In addition we will enrich for these TICs and identify new protein markers that could be used to test patient samples before or after treatment. This would be of considerable assistance in making decisions about treatment choice or prognosis. Since TICs have not been reported in HNSCC previously their identification would lead to a considerable advance in our undesratnding of how these tumours form.Read moreRead less
Development Of Novel EGFR Tyrosine Kinase Inhibitors For The Management Of Glioma, Head And Neck And Other Cancers
Funder
National Health and Medical Research Council
Funding Amount
$196,527.00
Summary
Abnormalities in EGF-EGFR family signalling pathways have been implicated in many human cancers including glioma, squamous cell carcinome of the head and neck, colon, ovary and prostate, and are associated with poor clinical prognosis, non-responsiveness to chemotherapy, and decreased survival. Inhibitors of these pathways would therefore be useful anti-cancer pharmaceuticals. This proposal outlines experiments aimed at understanding the role of the individual EGFR family members in controlling ....Abnormalities in EGF-EGFR family signalling pathways have been implicated in many human cancers including glioma, squamous cell carcinome of the head and neck, colon, ovary and prostate, and are associated with poor clinical prognosis, non-responsiveness to chemotherapy, and decreased survival. Inhibitors of these pathways would therefore be useful anti-cancer pharmaceuticals. This proposal outlines experiments aimed at understanding the role of the individual EGFR family members in controlling a complex signalling network, and the development of novel small molecule inhibitors of these pathways which are specific for individual EGFR family members and which should prove effective in the management of many forms of cancer. Additionally, the potential synergy of these inhibitors in combination therapy with other anti-cancer drugs and reagents which induce cell death will be investigated. These small molecule pharmaceuticals could easily be produced commercially, and taken into clinical trials, in Australia.Read moreRead less
Development Of A Novel Therapy For The Treatment Of Epidermal Squamous Cell Carcinoma
Funder
National Health and Medical Research Council
Funding Amount
$432,750.00
Summary
Squamous cell carcinomas (SCC) are the most common life-threatening form of skin cancer in Australia. SCCs commonly arise in areas of the body that have been exposed to excessive amounts of UV irradiation. The cells of the skin from which SCCs are derived are called keratinocytes. UV irradiation causes lesions within these cells such that their growth and maturation are disrupted leading to deregulated growth and maturation and hence tumour formation. We have previously identified a protein, E2F ....Squamous cell carcinomas (SCC) are the most common life-threatening form of skin cancer in Australia. SCCs commonly arise in areas of the body that have been exposed to excessive amounts of UV irradiation. The cells of the skin from which SCCs are derived are called keratinocytes. UV irradiation causes lesions within these cells such that their growth and maturation are disrupted leading to deregulated growth and maturation and hence tumour formation. We have previously identified a protein, E2F, that is central to this process and whose inhibition leads to decreased cancer cell growth. During the course of these studies we noted that the deregulation of E2F could also lead to the disruption of keratinocyte maturation. This led us to propose that the inhibition of E2F in SCCs may result in both decreased cancer cell growth as well as the reinstatement of a normal maturation process. this would make E2F inhibitors a very attractive therapeutic for treating SCC. In the present study we aim to explore the ability and the mechanism by which E2F modulates keratinocyte proliferation and maturation. This will be done in vitro as well as in animal models of SCC. These studies will be required in order to take the E2F inhibitors into clinical trials.Read moreRead less