Latest News Archive

Please select Category, Year, and then Month to display items
Categories
UFS News Media Release Research
Years
2019 2020 2021
Months
January March April June July August September November
Previous Archive
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

Johann Naudé talks at first Beyers Naudé lecture for 2012
2012-08-02

At the event were, from the left: Ms Bontle Senne, Managing Director for the PUKU Children’s Literature Foundation, Mr Sipho Hlongwane, writer and columnist for the Daily Maverick, Prof. Nicky Morgan, Vice-Rector: Operations at the UFS, Mr Themba Mola, Chief Operations Officer at Kagiso Trust, Mr Johann Naudé, son of Dr Beyers Naudé, and Dr Choice Makhetha, Vice-Rector: External Relations.
Photo: Stephen Collett
2 August 2012

The University of the Free State (UFS) together withKagiso Trust, presented the first Beyers Naudé lecture for 2012 on its South Campus in Bloemfontein last week. Speakers like Dr Wilmot James, Member of Parliament, Mr Johann Naudé, son of Dr Beyers Naudé, Mr Sipho Hlongwane, writer and columnist for the Daily Maverick and Ms Bontle Senne, Managing Director for the PUKU Children’s Literature Foundation, all gave a lecture around this year’s theme: Collaborative partnerships for social cohesion: Building a nation with ethics.

Dr Beyers Naudé played a major role in the formation of Kagiso Trust. His contribution to the trust and the fight against oppression in South Africa, as well as his challenging of the establishment from which he came, makes him one of South Africa’s courageous heroes. Kagiso Trust thus saw it fit to celebrate the life of this clerical activist through a Memorial Lecture The Beyers Naudé Memorial Lecture is an effort by the Trust to engage South Africans into a dialogue about issues affecting our nation.

Mr Johann Naudé talked about the lessons they as children learnt from their parents as well as his father’s decision to respond to the needs of the people in South Africa. Even before the Sharpeville Massacre, Dr Naudé began a self-transformation that led to his rejection of apartheid. “Apartheid had no theological or scriptural grounds and my father decided to resign from the church. After that, he started to talk openly against apartheid and he also paid the price for that. For seven years he was under house arrest and we as his children also felt the effect of his decision. At the University of Pretoria in a residence where I stayed as a student I was called in and told that I would be treated as an outcast. Loans and jobs were also closed for us as children and as a result, we all started our own businesses,” Mr Naudé said.

“Furthermore, our parents taught us to believe in ourselves. He also said we have rights and we can only demand those rights if we take the responsibility that goes with it. My father also taught us to honour and to respect our fellow men, elderly people and the culture of people different from us. We were also taught to apologise for the wrongs to our fellow men and to acknowledge earnestly that we were wrong.”

Dr Wilmot James said that there were two things consistent in the life of Dr Beyers Naudé, namely justice and fairness. “There are many Nelson Mandelas and Beyers Naudés out there. It is the responsibility of political parties and institutions to motivate such leadership. We must ask ourselves: Are my actions and decisions ethical and will they have fair consequences?” Dr James said.

Mr Hlongwane focused his presentation on the ethics part of the theme. He said: “We in South Africa fall very short of ethics. We can start by respecting each other and taking care of one another. The Constitution will not mean a thing if we fail to respect and trust one another. We will have no cohesive society if we continue to treat those different from us like dirt. It is also our ethical duty to build up the disadvantaged.

In her discussion, Ms Senne emphasised the role of the youth in South Africa. “Our youth is failing our state because our state is failing our youth. Their role is to bring cohesion and acts of courageousness to the table. For them to contribute in a practical and sustainable manner, they need to start making the changes they want to see in society. They are young people and they can make it work because they do have access to the necessary means (social networks) to get things done. They must get involved,” she said.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept