A definitive conclusion about the dangers associated with human or animal exposure to a particular nanomaterial can currently be made upon complex and costly procedures including complete NM characterisation with consequent careful and well-controlled in vivo experiments. A significant progress in the ability of the robust nanotoxicity prediction can be achieved using modern approaches based on one hand on systems biology, on another hand on statistical and other computational methods of analysis. In this project, using a comprehensive self-consistent study, which includes in-vivo, in-vitro and in-silico research, we address main respiratory toxicity pathways for representative set of nanomaterials, identify the mechanistic key events of the pathways, and relate them to interactions at bionano interface via careful post-uptake nanoparticle characterisation and molecular modelling. This approach will allow us to formulate novel set of toxicological mechanism-aware end-points that can be assessed in by means of economic and straightforward tests. Using the exhaustive list of end-points and pathways for the selected nanomaterials and exposure routs, we will enable clear discrimination between different pathways and relate the toxicity pathway to the properties of the material via intelligent QSARs. If successful, this approach will allow grouping of materials based on their ability to produce the pathway-relevant key events, identification of properties of concern for new materials, and will help to reduce the need for blanket toxicity testing and animal testing in the future.

PARC is an EU-wide research and innovation partnership programme to support EU and national chemical risk assessment and risk management bodies with new data, knowledge, methods, networks and skills to address current, emerging and novel chemical safety challenges. PARC will facilitate the transition to next generation risk assessment to better protect human health and the environment, in line with the Green Deal?s zero-pollution ambition for a toxic free environment and will be an enabler for the future EU ?Chemicals Strategy for Sustainability?. It builds in part on the work undertaken and experience acquired in past and on-going research and innovation actions, but goes beyond by its vocation to establish an EU-wide risk assessment hub of excellence. To contribute to several expected impacts of destination 2 ?Living and working in a health-promoting environment?, PARC will organise the activities to reach three specific objectives: - An EU-wide sustainable cross-disciplinary network to identify and agree on research and innovation needs and to support research uptake into regulatory chemical risk assessment. - Joint EU research and innovation activities responding to identified priorities in support of current regulatory risk assessment processes for chemical substances and to emerging challenges. - Strengthening existing capacities and building new transdisciplinary platforms to support chemical risk assessment. The Partnership brings together Ministries and national public health and risk assessment agencies, as well as research organisations and academia from almost all of EU Member States. Representatives of Directorates-General of the EC and EU agencies involved in the monitoring of chemicals and the assessment of risks are also participating. PARC will meet the needs of risk assessment agencies to better anticipate emerging risks and respond to the challenges and priorities of the new European policies.