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Investigating spermatogonial stem cell allocation in the fetal testis. This project aims to determine when and how spermatogonial stem cells (SSCs) are specified, and whether a genetic pathway that is used by in vitro stem cells is also employed, in vivo, by testicular stem cells. The project aims to deliver insight into the mechanisms of adult stem cell specification and regulation, in general. Intended practical outcomes of this work will underpin new methods for fertility management in animal ....Investigating spermatogonial stem cell allocation in the fetal testis. This project aims to determine when and how spermatogonial stem cells (SSCs) are specified, and whether a genetic pathway that is used by in vitro stem cells is also employed, in vivo, by testicular stem cells. The project aims to deliver insight into the mechanisms of adult stem cell specification and regulation, in general. Intended practical outcomes of this work will underpin new methods for fertility management in animals (in agriculture and conservation of endangered species) and humans. Knowledge gained will inform our understanding of stem cell biology more broadly and guide efforts to treat infertility or control fertility in animals and humans.Read moreRead less
Safer gene editing tools for Australian livestock and biotech industries. Editing the genome of an organism in an efficient and safe fashion is critical for the livestock and biotechnology industries. While CRISPR-Cas9 has become the method of choice for genome editing, it is known to introduce unwanted "on-target" and "off-target" mutations, limiting its utility. To address this the CI team created a novel genome editing platform technology termed Crackling-CAST that is almost 100% accurate, w ....Safer gene editing tools for Australian livestock and biotech industries. Editing the genome of an organism in an efficient and safe fashion is critical for the livestock and biotechnology industries. While CRISPR-Cas9 has become the method of choice for genome editing, it is known to introduce unwanted "on-target" and "off-target" mutations, limiting its utility. To address this the CI team created a novel genome editing platform technology termed Crackling-CAST that is almost 100% accurate, while retaining the efficiency of the classical Cas9 system. This project will exemplify the capabilities of the novel gene targeting platform in cell types used by the biotechnology and livestock sectors, ensuring its global uptake by these industries and delivering significant economic benefits for Australia. Read moreRead less
Genes in conflict in the social insects. Queen bees mate with 20 males, so it is in each male's interests to father female offspring that are more likely to become queens or reproductive workers. In contrast, queens want all workers to be sterile. This project will determine if some males pass on genes to offspring that have been modified so that their daughters are likely to become reproductive.
Manipulative mothers and family feuds: evolution of maternal effects under mother-offspring conflict. Can mothers shape the lives of their offspring and their grand-offspring? Can siblings shape the lives of their brothers and sisters? This project will address how mother and offspring strategies affect current and future generations. This is crucial for understanding how mothers will direct and accelerate evolutionary change in our changing world.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100126
Funder
Australian Research Council
Funding Amount
$160,000.00
Summary
Expanding capability in Western Australian flow cytometry for earth, oceans, environmental and biomedical science: state-of-the-art four laser and 12 colour analysis. This multiparameter flow cytometry facility will find wide application in the biological and environmental sciences, including analysis: of cells in vertebrates giving new understanding of cognitive development; of parasites and bacteria leading to new animal vaccines; and of marine plankton leading to more sustainable ecosystems a ....Expanding capability in Western Australian flow cytometry for earth, oceans, environmental and biomedical science: state-of-the-art four laser and 12 colour analysis. This multiparameter flow cytometry facility will find wide application in the biological and environmental sciences, including analysis: of cells in vertebrates giving new understanding of cognitive development; of parasites and bacteria leading to new animal vaccines; and of marine plankton leading to more sustainable ecosystems and fisheries.Read moreRead less
Genetic control of germline progenitor cell heterogeneity and fate. Tissue maintenance in adults is dependent on resident stem cells, defined by self-renewal and differentiation capabilities. It is apparent that stem cell populations are heterogeneous, being composed of subpopulations with distinct properties. The functional significance of these subsets and mechanisms that control their divergent characteristics are unclear. Using germline stem cells from mice as a model, stem cell subsets have ....Genetic control of germline progenitor cell heterogeneity and fate. Tissue maintenance in adults is dependent on resident stem cells, defined by self-renewal and differentiation capabilities. It is apparent that stem cell populations are heterogeneous, being composed of subpopulations with distinct properties. The functional significance of these subsets and mechanisms that control their divergent characteristics are unclear. Using germline stem cells from mice as a model, stem cell subsets have been identified based on differential expression of the pluripotency gene Pou5f1. This project aims to define functional characteristics of these subpopulations and to dissect transcription factor networks controlling their development. This promises important insights into understandings of adult stem cell regulation.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE210100375
Funder
Australian Research Council
Funding Amount
$428,191.00
Summary
Defining single-strand DNA break repair capacity in oocytes. This project aims to investigate fundamental biological mechanisms required for the production of high-quality oocytes, which fortify female fertility and the propagation of all sexually reproducing species. Exploiting unique mouse models, this study will define the importance of single strand DNA break repair capacity in oocytes for the first time, by outlining the role of single strand DNA repair proteins in maintaining genetic integ ....Defining single-strand DNA break repair capacity in oocytes. This project aims to investigate fundamental biological mechanisms required for the production of high-quality oocytes, which fortify female fertility and the propagation of all sexually reproducing species. Exploiting unique mouse models, this study will define the importance of single strand DNA break repair capacity in oocytes for the first time, by outlining the role of single strand DNA repair proteins in maintaining genetic integrity of gametes throughout their lifespan. In doing so, the intended outcome of this project is to dramatically improve our understanding of quality control in the female germ line. This should provide significant benefits to Australia by positioning it as a world leader in the field of Reproductive Science.Read moreRead less
Genetic control of spermatogenesis: defining the role of SOX3 in spermatogonial progenitor cells. The transcription factor (TF) SOX3 is a key regulator of neural stem/progenitor cells. Recently, this project has also shown that SOX3 is active in sperm progenitors (spermatogonia) and is required for spermatogenesis. Using our Sox3 KO mouse model and extensive expertise in spermatogonial cell culture, ChIP-seq technology and bioinformatics, this project will investigate crucial aspects of SOX3 fun ....Genetic control of spermatogenesis: defining the role of SOX3 in spermatogonial progenitor cells. The transcription factor (TF) SOX3 is a key regulator of neural stem/progenitor cells. Recently, this project has also shown that SOX3 is active in sperm progenitors (spermatogonia) and is required for spermatogenesis. Using our Sox3 KO mouse model and extensive expertise in spermatogonial cell culture, ChIP-seq technology and bioinformatics, this project will investigate crucial aspects of SOX3 function in the testes including stem versus progenitor cell activity and genome-wide target gene regulation. These studies will uncover the molecular and cellular mechanism by which SOX3 controls spermatogenesis and provide unique insight into how a single TF controls context-dependent differentiation in sperm versus brain progenitor cells.Read moreRead less
Targeting TGF-beta proteins to control animal reproduction. This project aims to develop a suite of novel biologics to control fertility in female mammals. This project expects to demonstrate that targeting a single class of ovarian proteins will enhance or inhibit egg production. The expected outcomes of this project are to (1) transform the breeding of livestock animals, which should provide significant benefits to the agricultural industry, through increased herd/flock sizes, and (2) provide ....Targeting TGF-beta proteins to control animal reproduction. This project aims to develop a suite of novel biologics to control fertility in female mammals. This project expects to demonstrate that targeting a single class of ovarian proteins will enhance or inhibit egg production. The expected outcomes of this project are to (1) transform the breeding of livestock animals, which should provide significant benefits to the agricultural industry, through increased herd/flock sizes, and (2) provide a non-surgical method of contraception in companion/feral species, which should address the large unmet need for fertility control in these animals.
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Molecular control of embryonic diapause. Many species can halt growth of the early embryo (diapause). This project will use novel animal models and new proteomics techniques to clarify what signals from the uterus control diapause of the embryo. This may uncover new mechanisms for cell regulation that will be relevant to the biology of stem cells, cancer and reproductive technologies.