![\"\"](\"\/wp-content\/uploads\/2024\/09\/Julie-Djordjevic_Sophie-Lev.jpg\")
\nPhoto credit: Carlos Furtado, Western Sydney Local Health District<\/figcaption><\/figure>\n
The team from the Westmead Institute for Medical Research found that stopping fungi from producing transporters that carry essential nutrients, like phosphate, starved the fungi.<\/p>\n
Despite high levels of phosphate in the human body, the research showed that the infecting fungi are very poor at absorbing it. This causes the fungi to produce more transporters to try to bring in more phosphate \u2013 a process known as the \u2018phosphate starvation response\u2019.<\/p>\n
By blocking this phosphate starvation response \u2013 and stopping the fungi from producing more transporters to get more nutrients \u2013 the research team starved the fungi, preventing their spread of infection in mice.<\/p>\n
Lead researcher, Associate Professor Julianne Djordjevic, is optimistic this discovery will provide a new avenue to develop safer and urgently needed antifungal drugs.<\/p>\n
\u201cDeath rates due to fungal infections are similar to those of tuberculosis and greater than those due to malaria,\u201d Associate Professor Djordjevic said.<\/p>\n
\u201cCurrent antifungal drugs are toxic, poorly absorbed by the body, and not fully effective.\u00a0 Drug-resistance is also emerging as a serious problem.<\/p>\n
\u201cAlthough new therapies are desperately needed to reduce the high global morbidity and mortality of infectious fungal diseases, no new classes of drug have been introduced into clinical medicine since 1986.<\/p>\n
\u201cIf we can stop fungi from absorbing nutrients during infection, this could provide a novel treatment avenue for fungal infections. This is particularly important in patients with weakened immune systems, such as those with HIV\/AIDS or leukaemia, and in organ transplant recipients who require life-long immunosuppressive therapy,\u201d she said.<\/p>\n
The first author on the study, Dr Sophie Lev, expanded the findings using bioinformatics.<\/p>\n
\u201cWe found that the phosphate starvation response in fungal pathogens has expanded its function to transport other essential nutrients, like sugars and amino acids, not just phosphate. We also identified that this starvation response occurs because phosphate transporters do not function properly at human pH.<\/p>\n
\u201cThe combined effect of poor nutrient absorption at human body pH and the expanded nutrient starvation response means that blocking this response could be the key to starving fungi of a range of key nutrients and treating these potentially lethal infections,\u201d Dr Lev said.<\/p>\n
\u201cThis finding is particularly exciting, because we may not need to start from scratch to identify drugs that block the fungal nutrient starvation response.<\/p>\n