PhD Studentship: Stem Cell Biology and Disease Modelling at University of Nott

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PhD Studentship: Stem Cell Biology and Disease Modelling
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- Centre for Biomolecular Sciences
Qualification Type:
PhD
Location:
Nottingham
Funding for:
UK Students
Funding amount:
Not Specified
Hours:
Full Time, Part Time
Placed On:
2nd March 2022
Closes:
31st March 2022
Reference:
MED1612
About the Project
Exploring the role of matrix encapsulation on early developmental decisions using non-animal sourced hydrogels
A PhD studentship in stem cell biology and disease modelling is available in Prof. Merry’s group ( ****) at the Biodiscovery Institute, **MEMBERS ONLY**SIGN UP NOW***..
The project aims to develop an in vitro model of early embryogenesis by combining two novel technologies and then work with key figures in the developmental biology community to share the new methodology. In addition, recognising the 3Rs ‘valley of death’ that limits widespread uptake of 3Rs relevant technologies, the student will also undertake a placement with a highly regarded peptide manufacturer to learn how to manufacture, test and market products such as the hydrogels effectively.
Developed and optimised by Dr David Turner during his NC3Rs fellowship, gastruloids are aggregates of approximately 300 mouse embryonic stem cells which activate the same gene networks seen in a developing embryo and undergo patterning events such as polarised gene expression and gastrulation similar to that seen in a six to ten-day-old embryo. Gastruloids have been demonstrated to provide a replacement technique for genetically modified (GM) mouse embryos in the study of embryogenesis. The stem cells can be directly manipulated, removing the need for breeding GM mouse lines in addition to avoiding the need to kill pregnant mice for embryo collection. However, studying later developmental events such as somitogenesis requires additional support derived from interactions with the extracellular matrix. Currently, that matrix is usually provided by Matrigel, a commercial preparation from mouse tumour extract, with significant batch-to-batch variation and complexity that makes it difficult to unpick complex biological questions. Matrigel can mask disease-specific cell-matrix interactions which are of significance in modelling disorders where these are an important part of the disease pathology and resistance to therapy. 
To solve the Matrigel problem, the Merry lab have developed synthetic peptide hydrogels (SPH). We have used them to create in vitro models of breast cancer and demonstrated they support 3D culture for multiple other cell types, including embryonic stem cells. The SPH technology is reproducible and adaptable and has been successfully shared with other groups. The SPH provide a ‘blank slate’ with which to test the role of matrix proteins and glycans as well as to evaluate the role of matrix stiffness. To investigate that aspect further, we’ve also teamed up with an expert in optics, Dr Amanda Wright, with whom we have developed a new microscope that allows us to understand how cell clusters interact with their local matrix at the cellular level. The high levels of reproducibility possible using the gastruloid and SPH technologies will enable us to build a detailed map of the local mechanical forces that impact on early developmental decisions and will showcase the new model system to encourage uptake.
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