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A common genetic variant of a mitochondrial RNA processing enzyme predisposes to insulin resistance

Mitochondrial energy metabolism plays an important role in the pathophysiology of insulin resistance. Recently, a missense N437S variant was identified in the MRPP3 gene, which encodes a mitochondrial RNA processing enzyme within the RNase P complex, with predicted impact on metabolism. We used CRISPR-Cas9 genome editing to introduce this variant into the mouse Mrpp3 gene and show that the variant causes insulin resistance on a high-fat diet.

Prestigious honour for Indigenous Genomics leader

Trailblazing Aboriginal doctor and health researcher Professor Alex Brown has been made a Fellow of the Australian Academy of Technological Sciences and Engineering (ATSE) in recognition of his leadership in ensuring Indigenous peoples are at the forefront of genomics efforts nationally and internationally.

Powerful new network to ensure Indigenous Australians can benefit from genomic medicine

A national alliance of the brightest minds in genomic science, academia, policy makers, industry and Indigenous leaders will work to break down barriers to ensure Aboriginal and Torres Strait Islander people can benefit from advances in genomic medicine if they choose.

Prestigious fellowship for pioneering researcher

Aleksandra Filipovska has been elected a Fellow of the Australian Academy of Health and Medical Sciences.

National network to significantly improve health outcomes for Indigenous Australians

A new national network will be established to advance the benefits from Genomic Medicine for Aboriginal and Torres Strait Islander people living in Australia.

Molecular basis of translation termination at noncanonical stop codons in human mitochondria

The genetic code that specifies the identity of amino acids incorporated into proteins during protein synthesis is almost universally conserved. Mitochondrial genomes feature deviations from the standard genetic code, including the reassignment of two arginine codons to stop codons.

Copy number variation in tRNA isodecoder genes impairs mammalian development and balanced translation

The number of tRNA isodecoders has increased dramatically in mammals, but the specific molecular and physiological reasons for this expansion remain elusive. To address this fundamental question we used CRISPR editing to knockout the seven-membered phenylalanine tRNA gene family in mice, both individually and combinatorially.

Epigenomic variability is associated with age-specific naïve CD4 T cell response to activation in infants and adolescents

Childhood is a critical period of immune development. During this time, naïve CD4 T cells undergo programmed cell differentiation, mediated by epigenetic changes, in response to external stimuli leading to a baseline homeostatic state that may determine lifelong disease risk. However, the ontogeny of epigenetic signatures associated with CD4 T cell activation during key developmental periods are yet to be described.