14 research outputs found
Virtual worlds in Australian and New Zealand higher education: remembering the past, understanding the present and imagining the future
3D virtual reality, including the current generation of multi-user virtual worlds, has had a long history of use in education and training, and it experienced a surge of renewed interest with the advent of Second Life in 2003. What followed shortly after were several years marked by considerable hype around the use of virtual worlds for teaching, learning and research in higher education. For the moment, uptake of the technology seems to have plateaued, with academics either maintaining the status quo and continuing to use virtual worlds as they have previously done or choosing to opt out altogether. This paper presents a brief review of the use of virtual worlds in the Australian and New Zealand higher education sector in the past and reports on its use in the sector at the present time, based on input from members of the Australian and New Zealand Virtual Worlds Working Group. It then adopts a forward-looking perspective amid the current climate of uncertainty, musing on future directions and offering suggestions for potential new applications in light of recent technological developments and innovations in the area
Christine Schutt, Raymond Carver Reading Series, January, 2013
A video recording of Christine Schutt reading her work on January 30, 2013 as part of the Syracuse University Creative Writing Program\u27s Raymond Carver Reading Series. Running time: 30:16
Identification of genetic elements in metabolism by high-throughput mouse phenotyping
Metabolic diseases are a worldwide problem but the underlying genetic factors and their relevance to metabolic disease remain incompletely understood. Genome-wide research is needed to characterize so-far unannotated mammalian metabolic genes. Here, we generate and analyze metabolic phenotypic data of 2016 knockout mouse strains under the aegis of the International Mouse Phenotyping Consortium (IMPC) and find 974 gene knockouts with strong metabolic phenotypes. 429 of those had no previous link to metabolism and 51 genes remain functionally completely unannotated. We compared human orthologues of these uncharacterized genes in five GWAS consortia and indeed 23 candidate genes are associated with metabolic disease. We further identify common regulatory elements in promoters of candidate genes. As each regulatory element is composed of several transcription factor binding sites, our data reveal an extensive metabolic phenotype-associated network of co-regulated genes. Our systematic mouse phenotype analysis thus paves the way for full functional annotation of the genome
Virtual worlds in Australian and New Zealand higher education: Remembering the past, understanding the present and imagining the future
3D virtual reality, including the current generation of multi-user virtual worlds, has had a long history of use in education and training, and it experienced a surge of renewed interest with the advent of Second Life in 2003. What followed shortly after were several years marked by considerable hype around the use of virtual worlds for teaching, learning and research in higher education. For the moment, uptake of the technology seems to have plateaued, with academics either maintaining the status quo and continuing to use virtual worlds as they have previously done or choosing to opt out altogether. This paper presents a brief review of the use of virtual worlds in the Australian and New Zealand higher education sector in the past and reports on its use in the sector at the present time, based on input from members of the Australian and New Zealand Virtual Worlds Working Group. It then adopts a forward-looking perspective amid the current climate of uncertainty, musing on future directions and offering suggestions for potential new applications in light of recent technological developments and innovations in the area
Optimization of Benzodiazepinones as Selective Inhibitors of the X‑Linked Inhibitor of Apoptosis Protein (XIAP) Second Baculovirus IAP Repeat (BIR2) Domain
The
IAPs are key regulators of the apoptotic pathways and are commonly
overexpressed in many cancer cells. IAPs contain one to three BIR
domains that are crucial for their inhibitory function. The pro-survival
properties of XIAP come from binding of the BIR domains to the pro-apoptotic
caspases. The BIR3 domain of XIAP binds and inhibits caspase 9, while
the BIR2 domain binds and inhibits the terminal caspases 3 and 7.
While XIAP BIR3 inhibitors have previously been reported, they also
inhibit cIAP1/2 and promote the release of TNFα, potentially
limiting their therapeutic utility. This paper will focus on the optimization
of selective XIAP BIR2 inhibitors leading to the discovery of highly
potent benzodiazepinone <b>36</b> (IC<sub>50</sub> = 45 nM),
which has high levels of selectivity over XIAP BIR3 and cIAP1 BIR2/3
and shows efficacy in a xenograft pharmacodynamic model monitoring
caspase activity while not promoting the release of TNFα in
vitro
Benzazepinones and Benzoxazepinones as Antagonists of Inhibitor of Apoptosis Proteins (IAPs) Selective for the Second Baculovirus IAP Repeat (BIR2) Domain
XIAP is a key regulator of apoptosis,
and its overexpression in
cancer cells may contribute to their survival. The antiapoptotic function
of XIAP derives from its BIR domains, which bind to and inhibit pro-apoptotic
caspases. Most known IAP inhibitors are selective for the BIR3 domain
and bind to cIAP1 and cIAP2 as well as XIAP. Pathways activated upon
cIAP binding contribute to the function of these compounds. Inhibitors
selective for XIAP should exert pro-apoptotic effects through competition
with the terminal caspases. This paper details our synthetic explorations
of a novel XIAP BIR2-selective benzazepinone screening hit with a
focus on increasing BIR2 potency and overcoming high in vivo clearance.
These efforts led to the discovery of benzoxazepinone <b>40</b>, a potent BIR2-selective inhibitor with good in vivo pharmacokinetic
properties which potentiates apoptotic signaling in a manner mechanistically
distinct from that of known pan-IAP inhibitors