A Novel Mechanism For Sustained Proliferation Of Cancer Cells
Funder
National Health and Medical Research Council
Funding Amount
$565,881.00
Summary
We have found that some tumours use a previously unknown strategy for evading the normal limits on cellular proliferation. We will analyse the molecular details of this mechanism in order to (i) understand how it works, (ii) devise a diagnostic test, and (iii) lay the foundations for developing treatments that specifically target this type of cancer.
Interaction Of TRF2 With DNA Repair Proteins In Alternative Lengthening Of Telomeres
Funder
National Health and Medical Research Council
Funding Amount
$297,246.00
Summary
10-15% of human cancers, including some of the most difficult-to-treat and aggressive, depend for their continuing growth on a molecular process called Alternative Lengthening of Telomeres (ALT). We have identified for the first time a protein whose normal role includes repressing ALT. We will study how this protein works, what its molecular partners are, and how these molecules interact with each other. This information is expected to lay the foundations for cancer treatments that target ALT.
ALT-associated PML Bodies: Keys To The Biology And Treatment Of An Important Subset Of Cancers
Funder
National Health and Medical Research Council
Funding Amount
$813,614.00
Summary
Alternative Lengthening of Telomeres (ALT) is a molecular mechanism used by ~10% of cancers to sustain their relentless growth. ALT is common in sarcomas and brain tumours which are difficult to treat. ALT cancers contain nuclear structures called ALT-associated PML nuclear bodies (APBs) which may be part of the ALT machinery. This research will investigate characteristics of APBs and how they are formed, and will use this information to identify drugs to treat ALT tumours.
Molecular Characterisation Of Telomere Trimming And Its Role In Cell Proliferative Capacity
Funder
National Health and Medical Research Council
Funding Amount
$403,439.00
Summary
Telomeres are protective structures at the ends of chromosomes. Telomere length is a major determinant of how many times a cell can proliferate. We have recently discovered a rapid telomere shortening process that we have called telomere trimming. We will analyse the molecular details of this process to determine whether it could be used to shorten telomeres and stop cancer cell proliferation, and whether blocking it could increase cell proliferation in patients with short telomere syndromes.
Neuroblastoma (NB) is a common cancer in children, and one of the hardest to cure. Some mature into a benign tumour without needing any treatment, others are aggressive and require intensive treatment, and some regrow despite all treatment. It is often difficult to predict accurately how NBs will behave. We will study the two ways NBs can undergo unlimited growth, to determine whether this predicts tumour behavior, and therefore what treatment is needed.
Telomere Structural Abnormalities In Cells Using Alternative Lengthening Of Telomeres
Funder
National Health and Medical Research Council
Funding Amount
$522,122.00
Summary
The continuing growth of cancers depends on their cells being able to prevent shortening of chromosome ends (telomeres). Some cancers, including very aggressive brain and connective tissue tumours, achieve this via the Alternative Lengthening of Telomeres (ALT) process. We have evidence that the telomere structure of normal cells prevents ALT. Here we will examine how the telomere structure of ALT-positive cancer cells is changed, and whether reversing these changes inhibits ALT.