PhD Study : Anticancer Activity of Rhamnolipids and Sophorolipids Biosurfactant Congeners

Apply and key information  

Summary

Rhamnolipids and sophorolipids are glycolipidic biosurfactants produced by bacterial and yeast cells, respectively and possess both hydrophobic and hydrophilic moieties. Studies in our laboratory have demonstrated that the molecular structure of specific glycolipid biosurfactants congeners are determine their biological activity against particular cancer cell lines whilst showing no significant effects on healthy cell of the same or similar source. To understand the effect acyl-sidechain length on anti-cancer activity, this project will utilise molecular biological tools to generate mono-rhamnolipid producing mutant from B. thailandensis and compare the actions of mono-rhamnolipids to those generated by P. aeruginosa strain using in vitro cell culture techniques.

Please note: Applications for more than one PhD studentship are welcome, however if you apply for more than one PhD project within Biomedical Sciences, your first application on the system will be deemed your first-choice preference and further applications will be ordered based on the sequential time of submission. If you are successfully shortlisted, you will be interviewed only on your first-choice application and ranked accordingly. Those ranked highest will be offered a PhD studentship. In the situation where you are ranked highly and your first-choice project is already allocated to someone who was ranked higher than you, you may be offered your 2nd or 3rd choice project depending on the availability of this project.

Essential criteria

Applicants should hold, or expect to obtain, a First or Upper Second Class Honours Degree in a subject relevant to the proposed area of study.

We may also consider applications from those who hold equivalent qualifications, for example, a Lower Second Class Honours Degree plus a Master’s Degree with Distinction.

In exceptional circumstances, the University may consider a portfolio of evidence from applicants who have appropriate professional experience which is equivalent to the learning outcomes of an Honours degree in lieu of academic qualifications.

  • Sound understanding of subject area as evidenced by a comprehensive research proposal
  • Clearly defined research proposal detailing background, research questions, aims and methodology

Desirable Criteria

If the University receives a large number of applicants for the project, the following desirable criteria may be applied to shortlist applicants for interview.

  • Completion of Masters at a level equivalent to commendation or distinction at Ulster
  • Experience using research methods or other approaches relevant to the subject domain
  • Work experience relevant to the proposed project
  • Publications record appropriate to career stage
  • Experience of presentation of research findings
  • A comprehensive and articulate personal statement
  • Relevant professional qualification and/or a Degree in a Health or Health related area

Funding and eligibility

The University offers the following levels of support:

Vice Chancellors Research Studentship (VCRS)

The following scholarship options are available to applicants worldwide:

  • Full Award: (full-time tuition fees + £19,000 (tbc))
  • Part Award: (full-time tuition fees + £9,500)
  • Fees Only Award: (full-time tuition fees)

These scholarships will cover full-time PhD tuition fees for three years (subject to satisfactory academic performance) and will provide a £900 per annum research training support grant (RTSG) to help support the PhD researcher.

Applicants who already hold a doctoral degree or who have been registered on a programme of research leading to the award of a doctoral degree on a full-time basis for more than one year (or part-time equivalent) are NOT eligible to apply for an award.

Please note: you will automatically be entered into the competition for the Full Award, unless you state otherwise in your application.

Department for the Economy (DFE)

The scholarship will cover tuition fees at the Home rate and a maintenance allowance of £19,000 (tbc) per annum for three years (subject to satisfactory academic performance).

This scholarship also comes with £900 per annum for three years as a research training support grant (RTSG) allocation to help support the PhD researcher.

  • Candidates with pre-settled or settled status under the EU Settlement Scheme, who also satisfy a three year residency requirement in the UK prior to the start of the course for which a Studentship is held MAY receive a Studentship covering fees and maintenance.
  • Republic of Ireland (ROI) nationals who satisfy three years’ residency in the UK prior to the start of the course MAY receive a Studentship covering fees and maintenance (ROI nationals don’t need to have pre-settled or settled status under the EU Settlement Scheme to qualify).
  • Other non-ROI EU applicants are ‘International’ are not eligible for this source of funding.
  • Applicants who already hold a doctoral degree or who have been registered on a programme of research leading to the award of a doctoral degree on a full-time basis for more than one year (or part-time equivalent) are NOT eligible to apply for an award.

Due consideration should be given to financing your studies. Further information on cost of living

Recommended reading

1-Leonie A Sarubbo, C S Maria da Gloria, Italo José B Durval, Káren O Bezerra, Beatriz G Ribeiro, Ivison A Silva, Matthew S Twigg, Ibrahim M Banat (2022). Biosurfactants: Production, Properties, Applications, Trends, and General Perspectives. Biochemical Engineering Journal 108377. https://doi.org/10.1016/j.bej.2022.108377

2-Enuh Manga, Pınar Celik, Ahmet Cabuk and Ibrahim M. Banat (2021). Biosurfactants: Opportunities for the development of a sustainable future. Current Opinion in Colloid & Interface Science 101514. https://doi.org/10.1016/j.cocis.2021.101514

3-Callaghan, B., Lydon, H., Roelants, S. L. K. W., Van Bogaert, I. N. A., Marchant, R., Banat, I. M., et al. (2016). Lactonic Sophorolipids Increase Tumor Burden in Apcmin+/- Mice. PLoS One 11, e0156845. Available at: https://doi.org/10.1371/journal.pone.0156845

4-Callaghan, B., Twigg, M.S., Baccile, N., Inge N. A. Van Bogaert, Roger Marchant, Christopher A. Mitchell, Ibrahim M. Banat (2022). Microbial sophorolipids inhibit colorectal tumour cell growth in vitro and restore haematocrit in Apcmin+/− mice. Appl Microbiol Biotechnol. 106, pages 6003–6016. https://doi.org/10.1007/s00253-022-12115-6

5-Adu, Simms A., Matthew S. Twigg, Patrick J. Naughton, Roger Marchant, and Ibrahim M. Banat (2022). "Biosurfactants as Anticancer Agents: Glycolipids Affect Skin Cells in a Differential Manner Dependent on Chemical Structure". Pharmaceutics 14, no. 2: 360. https://doi.org/10.3390/pharmaceutics14020360

6-Twigg, M.S, Adu, S. A., Sugiyama, S., Marchant, R., and Banat, I. M. (2022). Mono-rhamnolipid biosurfactants synthesized by Pseudomonas aeruginosa detrimentally affect colorectal cancer cells. Pharm. IN PRESS.

7-Rudden, M., Tsauosi, K., Marchant, R., Banat, I. M., and Smyth, T. J. (2015). Development and validation of an ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method for the quantitative determination of rhamnolipid congeners. Appl. Microbiol. Biotechnol. 99, 9177–9187. https://doi.org/10.1007/s00253-015-6837-1

8-Funston, S. J., Tsaousi, K., Rudden, M., Smyth, T. J., Stevenson, P. S., Marchant, R., Banat I.M. (2016). Characterising rhamnolipid production in Burkholderia thailandensis E264, a non-pathogenic producer. Appl. Microbiol. Biotechnol. 100, 7945–7956. https://doi.org/10.1007/s00253-016-7564-y

The Doctoral College at Ulster University

Key dates

Submission deadline
Monday 27 February 2023
04:00PM

Interview Date
27 March to 6 April 2023

Preferred student start date
18 September 2023

Applying

Apply Online  

Contact supervisor

Professor Ibrahim Banat

Other supervisors

  • Emeritus Professor Roger Marchant