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Title: An investigation into the effect of p53, miRNA-22, and MTHFD2 in cancer metabolism
Author: Yang, Tianlai
ISNI:       0000 0004 6496 655X
Awarding Body: Imperial College London
Current Institution: Imperial College London
Date of Award: 2017
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The effect of cell regulators on cancer metabolism can affect cancer growth. The link between the transcription factor p53, a microRNA (miRNA) with regulatory effects on cancer growth - miRNA-22, and a cancer-related metabolic enzyme MTHFD2 was explored in cancer cells. Although there was no clear link between these three factors, the effect of each individual component on cancer cell metabolism did produce interesting findings. The absence of p53 increased intermediates involved in nucleotide synthesis and reduce substrates required for glutathione synthesis in the mouse model. Overexpression of miRNA-22 at physiological levels increased glucose uptake, lactate production, and biosynthesis of serine, glycine and glycerol-3-phosphate in breast cancer cells. Knockdown of MTHFD2 caused breast cancer cells to be more reliant on exogenous glycine. The complexity of cell biology means that there is still much to be understood, and this work can hopefully contribute to ongoing research in this area.
Supervisor: Keun, Hector ; Gooderham, Nigel Sponsor: Medical Research Council
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral