The Role Of UPF3B And Nonsense Mediated MRNA Decay Surveillance In The Pathology Of Intellectual Disability.
Funder
National Health and Medical Research Council
Funding Amount
$789,954.00
Summary
Proper functioning of the nonsense mediated mRNA decay (NMD or 'mRNA police') is crucial for any cell to ensure normal development and function. When NMD is compromised the outcome is learning and memory problems, autism or schizophrenia. Under this project we study malfunctioning NMD using stem and neuronal cells derived from patients' skin cells. Some of the affected genes might be considered for therapeutic interventions. NMD is relevant to 1000s of human disorders and as such it is of fundam ....Proper functioning of the nonsense mediated mRNA decay (NMD or 'mRNA police') is crucial for any cell to ensure normal development and function. When NMD is compromised the outcome is learning and memory problems, autism or schizophrenia. Under this project we study malfunctioning NMD using stem and neuronal cells derived from patients' skin cells. Some of the affected genes might be considered for therapeutic interventions. NMD is relevant to 1000s of human disorders and as such it is of fundamental importance.Read moreRead less
Identification Of Genes For X-linked Mental Retardation.
Funder
National Health and Medical Research Council
Funding Amount
$675,228.00
Summary
We propose to identify novel heritable causes of intellectual disability using 22 large and well-characterised families from Australia. In these families we have refined the location of the genetic defect to the chromosome X and excluded the contribution of all so far known genes. We will achieve this using the technology of massive parallel sequencing. At the completion of the project we will have identified novel causes of intellectual disability and devised tests to identify them.
Single minded 1 in neuron development and satiety signalling. An understanding of how Single minded 1 (SIM1) regulates target genes may allow new pharmaceutical approaches to be designed to combat obesity. As Sim1 belongs to a family of closely related gene regulatory proteins which function in early development and homeostasis, deciphering the molecular control mechanisms of Sim1 may help understand how the related factors function in processes such as angiogenesis, response to low oxygen stres ....Single minded 1 in neuron development and satiety signalling. An understanding of how Single minded 1 (SIM1) regulates target genes may allow new pharmaceutical approaches to be designed to combat obesity. As Sim1 belongs to a family of closely related gene regulatory proteins which function in early development and homeostasis, deciphering the molecular control mechanisms of Sim1 may help understand how the related factors function in processes such as angiogenesis, response to low oxygen stress, invasion of environmental pollutants and autism spectrum diseases. The ability to manipulate these factors would be of great benefit in treating a range of disorders, but a thorough molecular understanding of these factors needs be obtained prior to attempting design of pharmaceuticals.Read moreRead less
Investigating The Role Of The UPF3B Gene And Nonsense Mediated RNA Decay (NMD) Process In Mental Retardation.
Funder
National Health and Medical Research Council
Funding Amount
$572,710.00
Summary
Intellectual disability is a frequent and important medical problem. Genetic and environmental factors contribute about equally to the aetiology of intellectual disability. Estimated 1-3% of population suffer from a form of intellectual disability. Among the genetic factors contributing to intellectual disability are genes, and their mutations, on one of the human chromosomes, chromosome X. We have been studying human X-chromosome genes for many years and discovered in excess of 20 novel genes c ....Intellectual disability is a frequent and important medical problem. Genetic and environmental factors contribute about equally to the aetiology of intellectual disability. Estimated 1-3% of population suffer from a form of intellectual disability. Among the genetic factors contributing to intellectual disability are genes, and their mutations, on one of the human chromosomes, chromosome X. We have been studying human X-chromosome genes for many years and discovered in excess of 20 novel genes causing various forms of intellectual disability. Surprisingly the number of genes, in which mutations cause various forms of intellectual disability is unexpectedly high. Just on the human X-chromosome we expect in excess of 200 such genes, which is nearly 30% of the gene content of this chromosome. We propose to study a novel gene, UPF3B, we recently identified to be mutated in a form of intellectual disability. The normal function of this gene and its protein is known to a certain extent. The UPF3B protein plays a role of a guardian of other genes in human (and also other species) cells. The role of the UPF3B protein is to prevent erroneous genetic information to be used for the building of proteins with potentially toxic effects to the organism. In our patients this process clearly malfunctions as a consequence of the damaged UPF3B gene. We propose to shed some more light in to the molecular intricacies of this process with the aim to better understand the mechanics of the process. Families, which participate in our studies and have this gene involved will benefit from the availability of direct test. Multiple other families around the world are also likely to benefit, now or in the future.Read moreRead less
Understanding the molecular mechanisms of intellectual disability. Intellectual disability is frequent in the population, with one in every fifty people in the world directly affected. This project will improve our understanding of the correct development and function of the brain required for cognition by investigating specific roles and regulation of key molecules involved.