Novel Amphibian Skin Peptide-Analogues for the Treatment of type 2 Diabetes - Research

Ulster University - Coleraine

Novel Amphibian Skin Peptide-Analogues for the Treatment of type 2 Diabetes - Research

As part of ongoing programme into natural antidiabetic drug discovery; we isolated several novel insulin-releasing antihyperglycaemic agents from amphibian skin secretion for the treatment of type 2 diabetes. We have developed novel analogues of previously described insulinotropic host defence peptides from Xenopus amieti, Hymenochirus boettger, Lithobates chiricahuensis, Sphaenorhynchus lacteus etc. and early results indicated structural modifications of these peptides resulted in a significant augmentation of the insulinotropic effects; producing enhanced in vitro insulinotropic effects as well as improved glucose tolerance and insulin release in obese insulin resistant mice.

The overall aim of this research is to examine the long-term metabolic effects and elucidate molecular mechanism of actions of novel peptide analogues of some recently discovered host defence peptides with potent insulin-releasing effects for potential development as novel type 2 diabetes drugs.

The proposed research will investigate the interaction of the Novel peptides from amphibian skin secretion with beta-cell membrane proteins as well as in vivo changes in the expression of key genes and proteins involved in glucose signalling via the KATP-dependent and the cAMP-dependent secondary messenger pathways resulting from the administration of the peptides to diabetic animals. This project will involve techniques such as HPLC, MALDI-TOF, tissue culture, small animal handling and experimentation, PCR, immunohistochemistry, flurometric assay, radioimmunoassay, etc. PCR and Western blotting will be utilised to explore both gene and protein expression of key elements involved in pathways of insulin secretion (such as Ins1, Gck, Kcnj11, Abcc8, Cacna1c), beta cell proliferation (such as Pdx-1) and insulin action (such as Irs1, Ptb1, Pi3kca, Pdk1, Akt1, Insr, Slc2a4).

The proposed research will provide training in a wide range of techniques.

Applicants should note that Bench fees of £6,000.00- £8,000.00 per annum are required.

Entry requirements

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
- A comprehensive and articulate personal statement

If the University receives a large number of applicants for the project, the following desirable criteria may be applied to shortlist applicants for interview.
- First Class Honours (1st) Degree
- Completion of Masters at a level equivalent to commendation or distinction at Ulster
- Practice-based research experience and/or dissemination
- 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
- Get additional information for International applicants at

Application dates

Closing date: Wednesday 1st January 2025 12:00am.

How to Apply
We are delighted that you are considering Ulster University for your research studies.

Get full details on the application process and further guidance on how to apply, and what you will need to upload as part of your application (see "Application Date Weblink").

Once you have identified supervisors, discussed a research proposal and are ready to make an application, please apply using the online application system (see "Application Weblink").

Ulster University welcomes applications from all sections of the community and from persons with disabilities. It is University policy to assess all applications using academic criteria and on the basis of equality of opportunity and you should be assured that reasonable adjustments will be made should you require them.

Submission Deadline: Friday 1st September 2023 12noon.

Post Course Info

Careers and opportunities
PhD graduates are recognised by employers to hold valuable transferrable skills, as the nature of the degree trains candidates in creativity, critical inquiry, problem solving, negotiation skills, professionalism and confidence.

The most recent Ulster survey of PhD graduates found that 92% had secured employment within the first year since graduation (HESA Destination of Leavers Survey 2015), and while two thirds end up in the Higher Education or Research sectors, the range of skills acquired equips the remainder for employment in a wide range of contexts.

More details
  • Qualification letters


  • Qualifications

    Degree - Doctoral at UK Level 8

  • Attendance type

    Full time,Daytime

  • Apply to

    Course provider