Unravelling unexpected impacts of pharmaceuticals on mollusc development.NERC DLA TREES STUDENTSHIP

This project investigates how drugs designed to treat prostate cancer make snail shells not curly. Molluscs comprise a large and diverse phylum, second only to Arthropoda in the number of species. Pollution from agriculture, industry and households (e.g. via sewage effluents) can pose a significant threat to mollusc populations, for example Tributyl tin boat paints unexpectedly disrupting development and reproduction of molluscs living near harbours causing well-documented local extinctions. Surprisingly, compared to other groups of animals (e.g. vertebrates, arthropods, etc.), much of fundamental molluscan biology is not well characterised, which prevents proper chemical risk assessment to protect these species.


Recent research has shown that although molluscs do not have many of the steroid hormones found in vertebrates, they do share some evolutionary conserved steroidogenic enzymes with vertebrates and even plants (e.g. 5α-reductase (5αR), known as DET2 in plants). In gastropod molluscs, disruption to these enzymes by pharmaceuticals has significant impacts on embryo development, body patterning and growth. This project will use a combination of environmental toxicology and Omics (e.g. metabolomics, lipidomics) approaches to address critical gaps in endocrinology process of molluscs. The outcome could also inform possible mechanistic endpoints and biomarkers for inclusion in chemical regulatory testing guidelines for molluscs to provide better environmental protection.

 

You will be trained in the experimental design and running of animal ecotoxicology studies, including ethics of animal use in research and aquatic animal husbandry - one-to-one instruction by 1st supervisor and support from our research technician team. Analytical chemistry techniques, data processing and ‘omic workflows – one-to-one instruction by the 2nd Supervisor and support from the research technician team. We are also part of external networks, e.g., the London Metabolomics Network, which supports training for early-career researchers. This could provide additional training and networking opportunities. You will also be provided training in chemical risk assessment and policy - one-to-one instruction by the first supervisor, membership of the Centre for Pollution Research and Policy. 

 

How to apply

You must hold, or be expected to achieve, a first or high upper second-class undergraduate honours degree or equivalent (for example BA, BSc, MSci) or a Master's degree in a relevant subject (e.g. Biosciences, Analytical Science, Ecotoxicology etc). Prior experience in data analysis/visualisation, machine learning and/or analytical chemistry would be beneficial for this project. Candidates that have a relevant background in maths and/or data analytics that would like to develop biological knowledge, and analytical chemistry skills will also be suitable for this position. For further information on eligibility please refer to the TREES website.

Meet the Supervisor(s)


Alice Baynes - My main interests lie in aquatic biology, specifically how anthropogenic stressors, such as environmental contaminants, can alter an animal's development, reproductive and immune systems (endocrine disruption). My focus has been to investigate environmental chemical disruption to fish and freshwater gastropod molluscs. Initially, the emphasis of my research was on disruption to classic sex steroids (oestrogens and androgens); however, recently, my attention has been widened to include disruption to other parts of the endocrine system, including thyroid and retinoid systems. Working in the field of endocrine disrupting chemicals (EDCs), one area of research which I am keen to investigate is mollusc endocrinology. Much of my work with gastropods has found that, contrary to long-held views, molluscs may not use the same sex steroids as vertebrates. Without understanding how these fundamental developmental and reproductive processes work in molluscs, this vast and diverse group of animals are at risk of not being adequately protected using the current environmental endocrine disruption testing and legislation.  Career Summary 2022-present Senior Lecturer in Environmental Sciences, Brunel University London 2023-2025 Environmental Sciences Division Lead. 2020-2022 Lecturer in Environmental Sciences. Brunel University London Jan-March 2019 Visiting Research Fellow, Australian Rivers Institute, Griffith University, Queensland, Australia 2014-2020 Research Fellow, Institute of Environment, Health and Societies, Brunel University London, UK. 2012-2014 Postdoctoral Research Manager, Institute for the Environment (IfE), Brunel University, UK. 2009-2012 Postdoctoral Research Assistant, IfE, Brunel University, UK. 2008-2009 Research Assistant, IfE, Brunel University, UK. 2004-2008 PhD student, IfE, Brunel University, UK. 2002-2004 Fisheries Scientist, Environment Agency’s National Fisheries Laboratory, Huntingdon, Cambridgeshire, UK.

Thomas Miller - As an interdisciplinary scientist with a background in biology and analytical chemistry, my research interests are focussed on the impact of chemicals in the environment and the interaction this chemical stress has with other environmental stressors. My expertise lies in small molecule mass spectrometry to determine chemicals found in the environment (especially in wildlife) and to determine biomarkers and pathways associated with adverse effects in exposed organisms. I am also interested in the integration of artificial intelligence within environmental toxicology to support and solve different environmental challenges.  From the start of my PhD at King's College London my research was originally focussed on the uptake, biotransofrmation and elimination of pharmaceuticals in a freshwater invertebrate (Gammarus pulex) commonly found in UK rivers. I developed and validated machine learning models to predict these proccesses to support and potentially replace bioaccumulation testing during environmental risk assessments. I then moved into a postdoctoral position where I focussed on understanding the impact of pharmaceuticals by assessing behavioural disruption in these organisms. I developed and applied metabolomic workflows to gain a mechanistic understanding of animal behaviour and to link cause-effect relationships for different drug exposures. Here at Brunel, I will be working in three main areas concerned with chemical pollution. First is concerned with the determination of chemicals (and mixtures) using exposomics to characterise the chemical space in the environment, with a focus on internalised residues in animals. Second, improving mechanistic understanding of cause-effect relationships using metabolomics and lipidomics to determine biochemical changes that are phenotypically anchored. Finally, development and application of AI to support envrionmental risk assessment, replace animal testing and improve interpretation of complex datasets to better understand animal health.