Evolution of complexity in the zebrafish synapse proteome

The proteome of human brain synapses is highly complex and mutated in over 130 diseases. This complexity arose from two whole genome duplications early in the vertebrate lineage. Zebrafish are used in modelling human diseases, however its synapse proteome is uncharacterised and whether the teleost-specific genome duplication (TSGD) influenced complexity is unknown. We report the characterisation of the proteomes and ultrastructure of central synapses in zebrafish and analyse the importance of the TSGD. While the TSGD increases overall synapse proteome complexity, the Post Synaptic Density (PSD) proteome of zebrafish has lower complexity than mammals. A highly conserved set of ~1000 proteins is shared across vertebrates. PSD ultrastructural features are also conserved. Lineage-specific proteome differences indicate vertebrate species evolved distinct synapse types and functions. The datasets are a resource for a wide range of studies and have important implications for the use of zebrafish in modelling human synaptic diseases

Response-ability: Practicing integrity through intimacy in the marketplace

YesThe paper addresses the problem of pursuing ethical business practices purely under the aegis of ‘integrity’, as frequently used to characterise morally desirable traits. Drawing on the work of philosopher Thomas Kasulis, the paper pairs ‘integrity’ with ‘intimacy’ as a critical concept, placing greater attention upon relational properties, helping to understand ethics as existing between individuals, things and the environment. The argument is that by paying careful attention to spatial and temporal dynamics and proximities of exchange, businesses can better maintain and extend practices of integrity. It reminds us that ethics are developmental (not transcendental); that the cultivation of ethics provides greater depth and ownership and pertains to matters of the body and habits. The paper contributes a way of reading exchanges in the marketplace beyond prescriptive accounts of integrity. Through the lens of both integrity and intimacy, it identifies how we actually ‘live’ or practice greater responsiveness to exchanges

The disruption of proteostasis in neurodegenerative diseases

Cells count on surveillance systems to monitor and protect the cellular proteome which, besides being highly heterogeneous, is constantly being challenged by intrinsic and environmental factors. In this context, the proteostasis network (PN) is essential to achieve a stable and functional proteome. Disruption of the PN is associated with aging and can lead to and/or potentiate the occurrence of many neurodegenerative diseases (ND). This not only emphasizes the importance of the PN in health span and aging but also how its modulation can be a potential target for intervention and treatment of human diseases.info:eu-repo/semantics/publishedVersio