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31 March 2020 | Story Leonie Bolleurs | Photo Supplied
UFS Covid-19 vaccine research team
Prof Robert Bragg and members of the Veterinary Biotechnology research group believe that finding a vaccine for COVID-19 will not be a ‘quick fix’. From the left are: Prof Bragg, Samantha McCarlie, Liese Kilian, and Dr Charlotte Boucher-van Jaarsveld. The photo was taken during the World Veterinary Poultry Association congress in Thailand in 2019.

On 31 March 2020, there were 804 061 coronavirus cases and 39 064 deaths globally due to the outbreak. According to media reports, there is still no licensed vaccine for COVID-2019 – the cause of our current global health emergency.  

Prof Robert Bragg, researcher at the University of the Free State (UFS), says this is without a doubt the most pressing research need in the world today. 

The Veterinary Biotechnology research group in the Department of Microbial, Biochemical, and Food Biotechnology at the UFS recently submitted an article for publication on the design of a possible COVID-19 vaccine, based on work they have done on infectious bronchitis virus (also a coronavirus). The article, authored by the group of which Prof Bragg is a member, is titled: A sub-unit vaccine produced in 'Yarrowia lipolytica' against COVID-19: Lessons learnt from infectious bronchitis virus. 

The research group, consisting of researchers and postgraduate students, is mostly looking at strategies for improved disease control, mainly in avian species, through vaccine development, treatment, and biosecurity.

Prof Bragg says their main aim with this study was to get the research out there so that the bigger pharmaceutical companies could take up the design of a possible COVID-19 vaccine and assist with the development of a vaccine. 

He says the research group’s role in this lengthy process would be to express the protein, which could be used in the development of a possible vaccine. “Thereafter, it will have to be taken up by a vaccine manufacturer to get the vaccine made and to the market.”

Developing a vaccine
Liese Kilian, a member of the research group, finished writing up her MSc thesis in Microbiology in the UFS Department of Microbial, Biochemical, and Food Biotechnology in December 2019 – the same time that COVID-19 originated in China. She has been working on the development of an edible sub-unit vaccine against the infectious bronchitis virus (IBV), which is a widespread avian coronavirus. This virus is specific to poultry and is different from COVID-19. 

Kilian’s project was conducted under the supervision of Prof Bragg and Dr Charlotte Boucher-van Jaarsveld. Dr Boucher-van Jaarsveld is a research fellow in the university’s Department of Microbial, Biochemical and Food Biotechnology.

Kilian, with the assistance of Samantha Mc Carlie, currently a master’s student in the research group, substituted the genetic code of the IBV with the genetic code of the COVID-19 virus, which were already published at that stage. Thus, a gene for the development of a possible sub-unit vaccine against the S1 spike protein of COVID-19 was developed for expression in the same yeast strain used to express the spike protein of IBV. A sub-unit vaccine can be described as part of a pathogen, triggering an immune response against the pathogen from which it is derived.

After Killian successfully developed the gene for this study, she expressed the S1 spike protein of the IBV in a yeast-based expression system developed by the research group. Dr Boucher-van Jaarsveld says this simply means that the yeast takes up the foreign genetic material (viral gene) into its own genetic make-up and makes more of this protein as if it is part of the yeast’s normal material. 

“The images of COVID-19 are being shown constantly in the media and the ‘spikes’ can be seen on all of these images. These spikes are very typical for all coronaviruses and there is some level of similarity between the structure of these spikes in many of the coronaviruses,” Prof Bragg adds.

According to the World Health Organisation, the spike protein is a promising candidate for a sub-unit vaccine due to its immunogenicity and safety, as well as manufacturing and stability considerations during large-scale development.

Prof Bragg says there are many different expression systems that are widely used. Producing the sub-unit vaccine in a yeast species is beneficial for the work they are doing. A yeast expression system is favourable as large-scale production, is less expensive compared to mammalian cell lines, and can be applied as an edible vaccine.

“The technology to grow massive volumes of yeast are also very well established. This, after all, is how beer is made!” Prof Bragg says. Dr Boucher-van Jaarsveld adds: “The expression of an antigen is not necessarily just geared towards vaccines but can also be used in the development of diagnostic tests to screen populations for infections.”

Working with other researchers
“Now that the situation is all but out of control, we maybe need to investigate the possibilities of working with other key researchers at the UFS as well as other universities in South Africa to develop the vaccine or diagnostic reagents locally. Discussions on this aspect are already underway.”

Several other universities in South Africa are also working to find a cure for the virus. Government availed funding for more research on the matter. According to Higher Education, Science and Technology Minister, Blade Nzimande, the University of Cape Town, the Council for Scientific and Industrial Research, as well as the Vaccines Institute of Southern Africa are working on the development of a vaccine.

Prof Bragg expressed the hope of obtaining funding for this work. “Because without funding, we will not be able to do anything with this data,” he says. They are currently investigating different funding options. 

“The sooner we start on the development of a vaccine, the sooner there will be one, but it will not be a ‘quick fix’. It must be stressed that, even if vaccine development is fast-tracked through the regulatory bodies, it will take many months (if not years) to move from the laboratory to the first human experimentation. It will take even longer before any human vaccine can be rolled out,” says Prof Bragg.



News Archive

Qwaqwa Campus opens: Prof. PA Mbati's speech
2005-01-22

Official welcome speech by Prof. PA Mbati for 2005 first year students held on Saturday 22nd January 2005. Program Director, The Chief Director Operations Rev. Kiepi Jaftha, Dean of Students Dr. Natie Luyt, Program Head of the Faculty of Humanities, Dr. Elias Malete, Program Head of Faculty of Natural and Agricultural Sciences, Prof. Riaan Luyt, Acting Program Head of the Faculty of Economics and Management Sciences Prof. Andries Venter, Deputy Director Student Affairs Mr. Teboho Manchu, Coordinator Finance: Mrs. Elizabeth Nchapi, Senior Librarian Mr. Stoffel Kok, Senior Magistrate Mr Saul Mohosho, SRC President Mr. Tello Motloung, members of staff, invited guests, parents, guardians, my dear students, ladies and gentlemen.

It is indeed my pleasure to welcome you to the official welcoming ceremony of the UFS-Qwaqwa Campus 2005 first year students. Our Rector and Vice Chancellor Professor Frederick has requested me to pass to you his warmest wishes and regards on this special occasion. I am confident that the orientation exercise in which you have participated has achieved the desired effect of introducing you to your new way of life here on campus, and that you are now sufficiently prepared to get on with the rigors of being a student at this University.

Following the restructuring of the higher education landscape, the Qwaqwa campus was incorporated into the University of the Free State with effect from January 1 2003 . As a consequence, Management was faced with a whole complex series of challenges including, primarily making the campus financially viable, but also ensuring that it remains relevant in it’s core business as a satellite campus of the University of the Free State in terms of its teaching, learning, research and community service responsibilities.

A whole series of strategic planning workshops were conducted last year with both internal and external stakeholders. Various important strategic objectives were flagged out, and the next level of consultation will take place soon. I know that there is a lot of eagerness, sometimes to the level of impatience to see this process completed as quickly as possible. But again on the other hand, due to the far reaching consequences of any hasty decisions, plus the need for a carefully planned process, we need to be a little more patient before the implementation of the strategic objectives is implemented. You will be kept informed as this important and critical aspect in the evolution of our campus takes place.

As a response to the need for a more effective governance model on the Qwaqwa campus, a review of the governance structure was completed towards the end of 2004 and will soon serve before the Executive of the Executive Management for approval.

Due to the importance that top management attaches to the development of an effective governance on the Qwaqwa campus, the process was facilitated by an internationally acclaimed consultant. Again the contents of the revised governance model will be made known to the campus and the broader community once it is approved.

I am glad to report that in recognition of the need to improve the infrastructure on campus to provide a conducive learning atmosphere to our students, a total of 8.2 million rands was made available towards the end of 2004 for recapitalization of specifically our student residences and lecture venues. The first phase of the residence renovation is completed and residences C, D and E have now been officially handed over to the University by the Contractor. Among the features of the renovated residences is that they will now computer rooms, kitchenettes for cooking, and a redesigned TV room. The rooms have even been fitted with heaters. Our challenge will now be to maintain our newly acquired facilities and to ensure that they do not again deteriorate to an un-acceptable level. The second phase of renovation will start soon.

As indicated in my address during the orientation week, our obligation to you as a campus is to offer you quality training to the best of our ability, and to disseminate this knowledge to you within a conducive atmosphere worthy of good learning. On the other hand, our students have to take advantage of this opportunity to acquire the necessary skills and training in the various academic programs that we offer on campus.

We have a very simple agenda on this campus – our vision is to continuously strive to build and develop the Qwaqwa campus of University of the Free State into a truly quality institution of higher learning in our country. To develop a tradition and culture in which we are proud of who we are, and constantly and tirelessly working towards excellence in our academic programs, and other non-academic but core and important aspects in your growth and development such as sport and community service. To nurture young conscientious citizens who are aware of their duties and responsibilities. Ultimately to produce hard working young people who fully exploit their potentials, and who will serve this country with diligence when unleashed into the real world in effectively managing their roles and responsibilities in society, whether in private or government civil service.

I would like to encourage that the various stake holders of this campus, the students, academic, administrative and support staff, and our broader community, to work together in harmony for the well being of our campus. For this campus to continue to be relevant in the environment that we find ourselves, there is a need for continuous engagement of its various stake holders, and genuinely listening to each other. We must continuously and regularly keep our feelers on alert in order that we can remain relevant.

I am particularly inviting our parents and guardians, the alumni of this campus, and leaders from our community to join hands with us in seeking solutions to the various challenges that we continue to face on campus. I am open for frank and honest discourse on the best way forward for our campus.

The University of the Free State is committed in making tertiary education accessible to as many students as possible. In this regard, students who do not have the required ‘M’ score to gain entry into main stream classes are given an opportunity to study in the highly successful ‘bridging program’ in which learners are integrated with main stream students but with fewer courses to tackle in order to ensure success. This is done on the premise that such students have the potential to pursue a degree course, and that therefore within a well structured program, they can make a success of their lives.

The University is conscious of the fact that in many instances several academically deserving students fail to be admitted into university due to financial reasons. For students who are academically deserving but who because of reasons of poverty cannot pay the requisite fees, the university is able to assist such students through the National Financial Aid Scheme – commonly known as NSFAS, and University Merit Awards. Other incentives such as Sports bursaries are also available.

Please remember that it is important to balance your life on campus and the phrase ‘a healthy mind in a healthy body’ aptly describes this statement. Ensure that you participate in sport and cultural activities of this campus so that you can develop and strengthen the various God-given talents that you have been blessed with.

A second major ingredient for your success on campus is discipline and respect for rules, policies and procedures that govern the University of the Free State , and respect for your fellow students. Good discipline is a major contributory factor to success in life, and more so in your formative academic life at University. This means for example that you must attend all your lectures, complete your assignments on-time and visit the library frequently. Please manage your time wisely and responsibly. Remember that as a university student, you are basically the master and architect of your own destiny.

Think very carefully when you are confronted with difficult situations, be they negative peer pressure, or temptations to indulge in intoxicating drugs, and make the right choice.

The University has well trained personnel including a social worker, a psychologist and counselor, and members of the student affairs division under the leadership of Mr. Teboho Manchu, Deputy Director Student Affairs, who are available to assist whenever you require their help.

Today is also a special day because we have officially inaugurated the SRC President and the rest of the SRC leadership. I am sure that you all join me in congratulating the SRC for being elected to their leadership roles for 2005. Mr. SRC president and your team, please remember that you now have a huge responsibility in carrying out the aspirations of the student body on campus. I want to wish you luck and success as you champion the rights of your constituents, which I believe and trust will be compatible with management’s expectations with regard to quality teaching and learning on campus. As you are aware, Management values the input that the student leadership makes in the operational management of the affairs of this campus, and we look forward to a cordial, non-confrontational working relationship with a view of rendering un-paralleled service on campus.

Mr. Program Director, allow me to wish everyone here a successful and prosperous year. May the good Lord give us the strength and courage to overcome any obstacle that may be placed in our way in the course of our work in 2005.

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