The role of P2X7 purinoceptor-bacteria interactions in the pathophysiology and treatment of Periodontitis
PhDs and postgraduate research
Self-funded PhD students only
School of Pharmacy and Biomedical Sciences
October and February
Applications accepted all year round
The work on this project will involve:
- Working with clinical samples, from varying geographical locations, to contribute and enhance understanding of the bacterial species and expression levels of P2X7 associated with the initial and chronic phases of periodontitis.
- Investigating the bacterial/P2X7 interactions to identify their importance in periodontitis.
- Evaluating potential treatment targets for both the initial and chronic phases of periodontitis.
This project brings together expertise within Microbiology, Dentistry and Biochemistry to contribute and enhance understanding of Periodontitis, a disease affecting 45% of the population (1) that has a significant health impact. Periodontitis causes the destruction of periodontal connective tissue, bone and ultimately tooth loss but also increases the risk of several systemic conditions including cardiovascular disease, diabetes and obesity.
Periodontitis is a pathology cause by a hyperimmune response against bacteria in the oral cavity. Aimed primarily at pathogen elimination, the host defence includes activation of acquired and innate immunity triggered by extracellular ATP (eATP) released from damaged cells acting on the P2X7 ATP receptor (purinoceptor) (2,3). However, P2X7 activation can result in both positive and negative clinical outcomes depending on a range of factors (4).
The current project aims to use molecular, biochemical and classical culture methods to identify and determine P2X7/bacterial interactions to ascertain the role of such interplay in differing stages of periodontal disease and identify whether modulation of P2X7 receptors can alter the disease progression.
The Portsmouth Biochemistry and Microbiology laboratories have expertise and specialised equipment and, discipline specific training will be provided. In addition, a full program of graduate training will be provided by the Graduate School.
- Ahmed H. Oral Health: What is Gum Disease? British Dent J. 2017;222:323-323.
- Trubiani O, et al., Expression of P2X7 ATP receptor mediating the IL-8 and CCL20 release in human periodontal ligament stem cells. J Cell Biochem. 2014;115:1138-1146.
- Young C and Gorecki D. P2RX7 Purinoceptor as a Therapeutic Target – The Second Coming? Frontiers in Chemistry. 2018; 6.
- Kim JJ et al., NLRP3 inflammasome and host protection against bacterial infection. J Korean Med Sci. 2013; 28:1415-1423.
Fees and funding
Funding availability: Self-funded PhD students only.
PhD full-time and part-time courses are eligible for the UK Government Doctoral Loan (UK and EU students only).
2020/2021 entry (for October 2020 and February 2021 entries)
Home/EU/CI full-time students: £4,407 p/a
Home/EU/CI part-time students: £2,204 p/a
International full-time students: £16,400 p/a
International part-time students: £8,200 p/a
PhD by Publication
External candidates £4,407 p/a
Members of staff £1,680 p/a*
2021/2022 entry (for October 2021 and February 2022 entries)
PhD and MPhil
Home/EU/CI full-time students: £4,407 p/a*
Home/EU/CI part-time students: £2,204 p/a*
International full-time students: £17,600 p/a
International part-time students: £8,800 p/a
All fees are subject to annual increase.
PhD by Publication
External Candidates £4,407 p/a*
Members of Staff £1,720 p/a*
If you are an EU student starting a programme in 2021/22 please visit this page.
*This is the 2020/21 UK Research and Innovation (UKRI) maximum studentship fee; this fee will increase to the 2021/22 UKRI maximum studentship fee when UKRI announces this rate in Spring 2021.
Some PhD projects may include additional fees – known as bench fees – for equipment and other consumables, and these will be added to your standard tuition fee. Speak to the supervisory team during your interview about any additional fees you may have to pay. Please note, bench fees are not eligible for discounts and are non-refundable.
You'll need an upper second class honours degree from an internationally recognised university or a Master’s degree in an appropriate subject. In exceptional cases, we may consider equivalent professional experience and/or Qualifications. English language proficiency at a minimum of IELTS band 6.5 with no component score below 6.0.
We are seeking a talented student with a strong background in either Microbiology, Biochemistry, Pharmacology or a related area.
How to apply
We’d encourage you to contact Dr Sarah Fouch at firstname.lastname@example.org to discuss your interest before you apply, quoting the project code.
When you are ready to apply, you can use our online application form. Make sure you submit a personal statement, proof of your degrees and grades, details of two referees, proof of your English language proficiency and an up-to-date CV.
Our ‘How to Apply’ page offers further guidance on the PhD application process.
If you want to be considered for this self-funded PhD opportunity you must quote project code PHBM4721020 when applying.