My group's work focuses on the role of the tumour suppressor protein LIMD1 and its family members Ajuba and WTIP and how their deregulation in normal tissue contributes to the development of lung, renal and breast cancer.
A HIF-LIMD1 negative feedback mechanism mitigates the pro-tumorigenic effects of hypoxia. EMBO Mol Med (2018) PMID: 29930174
Argonaute Utilization for miRNA Silencing Is Determined by Phosphorylation-Dependent Recruitment of LIM-Domain-Containing Proteins. Cell Rep (2017) 20(1):173-87. PMID: 28683311
The LIMD1 protein bridges an association between the prolyl hydroxylases and VHL to repress HIF-1 activity. Nat Cell Biol (2012) 14(2):201-8. PMID: 22286099
LIM-domain proteins, LIMD1, Ajuba, and WTIP are required for microRNA-mediated gene silencing. Proc Natl Acad Sci U S A (2010) 107(28):12499-504. PMID: 20616046
The chromosome 3p21.3-encoded gene, LIMD1, is a critical tumor suppressor involved in human lung cancer development. Proc Natl Acad Sci U S A (2008) 105(50):19932-7. PMID: 19060205
The current research projects within my group originate from our initial identification of LIMD1 as a specific pRB (retinoblastoma protein) binding partner (Sharp TV et al. PNAS 2004). LIMD1 is on chromosome 3p21.3, often deleted in epithelial cancers. We have also shown that LIMD1 is a bona fide lung cancer tumour suppressor (Sharp TV et al PNAS 2008) and also that loss of LIMD1 expression correlates with poor patient prognosis and decreased survival with respect to breast cancer (Spendlove et al 2008).
The full molecular characterization of this novel tumour suppressor is therefore the main focus of my group’s continued research. By understanding the function(s) of LIMD1 and indeed its family member proteins (Ajuba and WTIP); we can begin to understand how loss of this important tumour suppressor(s) contributes to disease pathogenesis and specifically tumorigenesis. We have also iniated new studies into targeting LIMD1 negative cancers and also the interplay of LIMD1 and LIM-domain protein with Immune-Oncology.
We are particularly focused on pancreatic, lung, prostate and ovarian cancers as areas of high unmet clinical need, working closely with colleagues in oncology at Barts Cancer Centre to translate discoveries into patient benefit.
PhD Studentships within the Sharp Group
Candidates interested in joining the lab to work in this research area can contact Dr Sharp by sending an email to email@example.com.
Currently positions are only available to self-funded students. QMUL Principal's Postgraduate Research Studentships are available to international students of any nationality and provide funding for up to 3 years of PhD study.
For more information on studentships for both home and international students, please visit here.
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miR-132 suppresses transcription of ribosomal proteins to promote protective Th1 immunity. Hewitson JP, Shah KM, Brown N et al. EMBO Rep (2019) 20(2)
Oncometabolite induced primary cilia loss in pheochromocytoma. O'Toole SM, Watson DS, Novoselova TV et al. Endocr Relat Cancer (2019) 26(2) 165-180
A HIF-LIMD1 negative feedback mechanism mitigates the pro-tumorigenic effects of hypoxia. Foxler DE, Bridge KS, Foster JG et al. EMBO Mol Med (2018) (1)
Deregulation of LIMD1-VHL-HIF-1α-VEGF pathway is associated with different stages of cervical cancer. Chakraborty C, Mitra S, Roychowdhury A et al. Biochem J (2018) 475(2) 1793-1806
LIMD1 is induced by and required for LMP1 signaling, and protects EBV-transformed cells from DNA damage-induced cell death. Wang L, Howell MEA, McPeak B et al. Oncotarget (2018) 9(2) 6282-6297
MicroRNA-155 induction via TNF-α and IFN-γ suppresses expression of programmed death ligand-1 (PD-L1) in human primary cells. Yee D, Shah KM, Coles MC et al. J Biol Chem (2017) 292(1) 20683-20693
Ajmaline blocks INa and IKr without eliciting differences between Brugada syndrome patient and control human pluripotent stem cell-derived cardiac clusters. Miller DC, Harmer SC, Poliandri A et al. Stem Cell Res (2017) 25(2) 233-244
Over expression of HIF1α is associated with inactivation of both LimD1 and VHL in renal cell carcinoma: Clinical importance. Sur S, Maurya AK, Roy A et al. Pathol Res Pract (2017) 213(2) 1477-1481
Argonaute Utilization for miRNA Silencing Is Determined by Phosphorylation-Dependent Recruitment of LIM-Domain-Containing Proteins. Bridge KS, Shah KM, Li Y et al. Cell Rep (2017) 20(2) 173-187
BMI-1 extends proliferative potential of human bronchial epithelial cells while retaining their mucociliary differentiation capacity. Munye MM, Shoemark A, Hirst RA et al. Am J Physiol Lung Cell Mol Physiol (2017) 312(2) L258-L267
Dr Katiuscia Bianchi, Professor Claude Chelala, Dr Tatjana Crnogorac-Jurcevic, Dr Susana Godinho, Dr Gunnel Halldén, Dr Michelle Lockley, Professor Yong-Jie Lu, Dr Sarah McClelland, Dr Prabhakar Rajan, Dr Jane Sosabowski, Dr Peter Szlosarek, Professor Yaohe Wang
Mr Paul Grevitt, Mr Paul Kennedy
I obtained my PhD from St. Georges, University of London. After two postdoctoral positions in The Netherlands and USA, I returned to take up a Senior Research Fellow position at the Institute of Cancer Research in London and then UCL. I then moved to the University of Nottingham to set up my independent research group in 2005. From there I relocated to BCI. My group studies the role of the LIM domain family of adaptor proteins and their role in regulating microRNA mediates gene silencing and the hypoxic response and how deregulation of these proteins and pathways contribute to disease states including cancer.