Feasibility study with the recombinant protein, rISG65, in a new second generation Rapid Diagnostic Test (RDT) for Sleeping Sickness
Lead Research Organisation:
University of Kent
Abstract
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People |
ORCID iD |
| Christopher Smales (Principal Investigator) |
Publications
Murphy N
(2020)
Glycosylation of Trypanosoma cruzi TcI antigen reveals recognition by chagasic sera.
in Scientific reports
Rooney B
(2015)
Expression of Trypanosoma brucei gambiense Antigens in Leishmania tarentolae. Potential for Use in Rapid Serodiagnostic Tests (RDTs).
in PLoS neglected tropical diseases
| Description | We have developed a new rapid diagnostic test for the diagnosis of sleeping sickness. This is based upon findings from a FLiP award. Human African Trypanosomiasis (HAT, sleeping sickness) is a disease that threatens millions of people in the sub-Saharan area of Africa. The development of new, more reliable and economic diagnostic biomarkers and assays is essential, particularly for distinguishing between early and late stages of the disease to inform the drug regimen used if this disease is to be reduced further in the sub-Saharan. As such, some recent developments in this area have focussed upon identification and validation of new diagnostic markers of HAT to complement or improve upon the current Card Agglutination Test for Trypanosomiasis (CATT), whilst others continue to investigate the possibility of developing a vaccination to this disease. Hence, for both the development of new diagnostics and for potential new vaccines, the availability of appropriate expression systems for the generation of recombinant protein molecules is required. He we have used existing expression systems and applied them to new areas of need/challenges with a view to create a new platform technology which could be used for tropical zoonotic diseases. We have 1. Established a collaboration between the University of Kent and the charity Medecins Sans Frontieres (MSF). 2. Established the LEXSY expression system in the laboratory at Kent for the generation of novel antigens to use in new diagnostics for HAT. 3. Generated appropriate constructs for HAT antigens, and constructs for a model IgA for expression in the LEXSY expression system (Leishmania). 4. Undertake preliminary expression of the model antigen proteins by transforming Leishmania cells by electroporation and purifying the expressed proteins by His tag chromatography (for the tagged HAT antigens). 5. Begun to characterise the glycosylation of model proteins produced in LEXSY cells. 6. Begun to assess the antigenic properties of these targets in collaboration with the Tropical Institute of Medicine in Belgium. 8. Development of an ELSIA based diagnostic for HAT. |
| Exploitation Route | This was subsequently taken forward with follow-on funding. |
| Sectors | Healthcare,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology |
| Description | This work builds upon, and into on-going, work on the development of a rapid-point-of-care diagnostic for the detection and monitoring of sleeping sickness. It is based upon recombinant antigens generated in a unique expression system. Preliminary work with samples from the tropical institute in Brussels showed that the assay has suitable sensitivity and accuracy to distinguish between positive and negative samples. The diagnostic assay is currently being assessed In the field in Africa to help educate about sleeping sickness and undertake testing. |
| First Year Of Impact | 2016 |
| Sector | Healthcare |
| Impact Types | Cultural,Societal |
| Description | Tropical Institute Collaboration |
| Organisation | Institute of Tropical Medicine Antwerp |
| Country | Belgium |
| Sector | Academic/University |
| PI Contribution | Development of recombinant antigens for rapid diagnostic test for sleeping sickness. |
| Collaborator Contribution | Providing serum and samples to test and validate antigens and diagnostics. |
| Impact | Development of new diagnostic for sleeping sickness that is now in field trial in Africa. |
| Start Year | 2014 |
| Title | A second generation Rapid Diagnostic Test (RDT) for Human African Trypanosomiasis (HAT) |
| Description | Currently in trial in Africa and being tested against other diagnostics to determine if the one developed during this project is superior. |
| Type | Diagnostic Tool - Non-Imaging |
| Current Stage Of Development | Late clinical evaluation |
| Year Development Stage Completed | 2017 |
| Development Status | Under active development/distribution |
| Clinical Trial? | Yes |
| Impact | Outreach and Dr Barrie Rooney awarded BBSRC Social Innovator of year. |
| Company Name | Trozon X |
| Description | The PDRA on the project has developed this spin out project and is the CEO. The aim of TROZON X is to design diagnostics for Tropical Zone Diseases which are easy to use in any environment. |
| Year Established | 2017 |
| Impact | None yet. |
| Website | http://www.trozonx.com |
| Description | 7 open days at University |
| Form Of Engagement Activity | Participation in an open day or visit at my research institution |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | Describing the research we undertake in the laboratory, covering all aspects of the research and the impact this has/can have. Particular questions around genetic modification of cells to produce recombinant proteins in all sessions and discussions around both the ethical aspects of this and the potential applications of such technology. |
| Year(s) Of Engagement Activity | 2015,2016 |
| Description | Open Day talks and lab tours |
| Form Of Engagement Activity | Participation in an open day or visit at my research institution |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | Tours of research laboratory, demonstrating of research and talk/presentation on the work that we do. |
| Year(s) Of Engagement Activity | 2019,2020 |
| Description | Open day tours of research laboratory and discussions with participants |
| Form Of Engagement Activity | Participation in an open day or visit at my research institution |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Undergraduate students |
| Results and Impact | 8 days of open day activities. |
| Year(s) Of Engagement Activity | 2017 |
| Description | Outreach Presentation on Diagnostics for Neglected Tropical Diseases |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Public/other audiences |
| Results and Impact | Rotary Club Presentation on Diagnostics |
| Year(s) Of Engagement Activity | 2016 |
| Description | Royal Society Summer Science Exhibition |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | The Summer Science Exhibition is an annual display of the most cutting-edge science and technology in the UK. This free, week-long festival features exhibits and a series of inspiring talks and activities for all ages. Meet the scientists, discover the exciting research and technology they work on and have fun with great hands-on activities. |
| Year(s) Of Engagement Activity | 2018 |
| URL | https://royalsociety.org/science-events-and-lectures/2019/summer-science-exhibition/ |
| Description | School visit/outreach for several days at Simon Langton Boys Grammar - MBP2 project showing students how to clone, express and purify recombinant proteins in the laboratory and discuss science behind this. |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Schools |
| Results and Impact | Helping with research activity in school - cloning and expression of recombinant proteins |
| Year(s) Of Engagement Activity | 2015,2016 |
| Description | Talk at Simon Langton Girls Grammar School |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Schools |
| Results and Impact | Talk on research of making biopharmaceuticals. |
| Year(s) Of Engagement Activity | 2019 |
| Description | Turkey Public Biotechnology Talk |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Presentation to public audience in Turkey on behalf of the British Council around biotechnology and its application. Event was filmed and followed by a question and answer session, answering questions sent in before the talk by social media and then from the audience. The event was filmed and shown on national TV in Turkey. Large range of topics discussed around the application of biotechnology to every day life and issues with long discussion/debate. |
| Year(s) Of Engagement Activity | 2016 |
| URL | http://www.britishcouncil.org.tr/en/programmes/education/science-innovation-talks/biotechnology |