UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Modelling microdomain-mediated protein sorting in immunological signalling

Long, EAG; (2012) Modelling microdomain-mediated protein sorting in immunological signalling. Doctoral thesis , UCL (University College London). Green open access

[thumbnail of EdLongThesis-Final-Redacted.pdf]
Preview
PDF
EdLongThesis-Final-Redacted.pdf
Available under License : See the attached licence file.

Download (15MB)

Abstract

Compartmentalisation is a fundamental feature of biological systems. The organism as a whole can be seen as a single compartment of the wider ecosystem. At lower scales, we observe biological processes compartmentalised into organs, cells, cell subtypes and organelles. In the highly complex discipline of immunology, compartmentalisation is key in order to respond e ciently to foreign antigens and to maintain the balance between immunity and tolerance. Recent studies have raised questions about the role of compartmentalisation in lipid membranes, from the relatively well described immunological synapse, to the smaller, more transient lipid raft or microdomain. This thesis asks whether, and how, microdomains could in uence the formation of small receptor complexes. Speci cally, we approach what appears to be a simple surface reaction-di usion problem from multiple viewpoints: explicitly simulating particle di usion using a probabilistic pixel-based model, and deriving a deterministic relation between spatial parameters and the timecourse of chemical concentrations throughout the model space. We also show the equivalence between the predictions of these two models, further supporting the validity of our approach. We also embed the results of our model output in an existing model of the immunological response in order to determine the downstream consequences of enhanced receptor organisation. The study gives a broader understanding of the mechanisms involved in microdomain-mediated protein sorting, highlights the degree of interdependence on multiple spatial and chemical parameters and suggests numerous avenues for future research.

Type: Thesis (Doctoral)
Title: Modelling microdomain-mediated protein sorting in immunological signalling
Open access status: An open access version is available from UCL Discovery
Language: English
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1355593
Downloads since deposit
181Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item