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ATFS-1 counteracts mitochondrial DNA damage by promoting repair over transcription

The ability to balance conflicting functional demands is critical for ensuring organismal survival. The transcription and repair of the mitochondrial genome requires separate enzymatic activities that can sterically compete, suggesting a life-long trade-off between these two processes.

Temporal landscape of mitochondrial proteostasis governed by the UPRmt

Breakdown of mitochondrial proteostasis activates quality control pathways including the mitochondrial unfolded protein response (UPRmt) and PINK1/Parkin mitophagy. However, beyond the up-regulation of chaperones and proteases, we have a limited understanding of how the UPRmt remodels and restores damaged mitochondrial proteomes. 

Developing new models of mitochondrial diseases using CRISPR/Cas technologies

Aleksandra Filipovska FAA, FAHMS BSc PhD Louis Landau Chair in Child Health Research; NHMRC Leadership Fellow; Deputy Director, ARC Centre of

Mitochondrial Medicine and Biology

Mitochondrial diseases are devastating disorders for which there are no cures or effective treatments. Our project will focus on the prevention of mitochondrial diseases and discovery of effective cures.

Estimating the potential malaria morbidity and mortality avertable by the US President's Malaria Initiative in 2025: a geospatial modelling analysis

Since its inception in 2005, the US President's Malaria Initiative (PMI) has played a major role in the reductions in malaria morbidity and mortality observed across Africa. With the status of PMI funding and operations currently uncertain, we aimed to quantify the impact that a fully functioning PMI would have on malaria cases and deaths in Africa during 2025. 

Hyperactive Nickase Activity Improves Adenine Base Editing

Base editing technologies enable programmable single-nucleotide changes in target DNA without double-stranded DNA breaks. Adenine base editors (ABEs) allow precise conversion of adenine to guanine. However, limited availability of optimized deaminases as well as their variable efficiencies across different target sequences can limit the ability of ABEs to achieve effective adenine editing.

Systems biology of mitochondrial diseases

Investigators: Professor Aleksandra Filipovska, Dr Stefan Siira Project description This project will focus on new and cutting-edge development of

Mitochondrial damage in muscle specific PolG mutant mice activates the integrated stress response and disrupts the mitochondrial folate cycle

During mitochondrial damage, information is relayed between the mitochondria and nucleus to coordinate precise responses to preserve cellular health. One such pathway is the mitochondrial integrated stress response (mtISR), which is known to be activated by mitochondrial DNA (mtDNA) damage. However, the causal molecular signals responsible for activation of the mtISR remain mostly unknown.

The mitophagy receptors BNIP3 and NIX mediate tight attachment and expansion of the isolation membrane to mitochondria

BNIP3 and NIX are the main receptors for mitophagy, but their mechanisms of action remain elusive. Here, we used correlative light EM (CLEM) and electron tomography to reveal the tight attachment of isolation membranes (IMs) to mitochondrial protrusions, often connected with ER via thin tubular and/or linear structures.

Mutational rescue of the activity of high-fidelity Cas9 enzymes

Programmable DNA endonucleases derived from bacterial genetic defense systems, exemplified by CRISPR-Cas9, have made it significantly easier to perform genomic modifications in living cells. However, unprogrammed, off-target modifications can have serious consequences, as they often disrupt the function or regulation of non-targeted genes and compromise the safety of therapeutic gene editing applications.