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01 October 2021 | Story Lunga Luthuli and Vicky Simpson | Photo Supplied
Anton Engelbrecht _ Farmovs researcher
Anton Engelbrecht, FARMOVS Bioanalysis Specialist.

“At FARMOVS, we have the opportunity to work with the world’s top pharmaceutical companies, where we form part of the evaluation of labelled and/or conjugated antigens and antibodies that are developed for accurate quantification of endogenous and pharmaceutical compounds. Alternatively, commercially available kits and reagents are also used for the same purpose if the sponsor cannot supply the customised antigens/antibodies. The developed assay methods are put through a rigorous validation assessment to confirm the selectivity, sensitivity, and robustness of the assay,” says Anton Engelbrecht, FARMOVS Bioanalysis Specialist. 

FARMOVS, affiliated to the University of the Free State and operating from the Bloemfontein Campus, is a leading clinical research organisation (CRO) with a unique advantage. As the only on-site ISO15189-accredited and GLP-certified pharmacokinetic laboratory on the African continent, with numerous successful inspections by leading international regulators, it offers the highest quality bioanalytical services in a variety of biological matrices for the development of pharmaceutical products.

Engelbrecht says: “The team of bioanalytical experts thrives on the excitement generated by new discoveries that lead to better treatment of a variety of physiological diseases.”

Advanced technology backed by 47 years of bioanalytical experience

The clinical research organisation prides itself on advanced technology, backed by 47 years of bioanalytical experience. It has developed more than 580 validated analytical methods that adhere to the International Council for Harmonisation and the US Food and Drug Administration (FDA) guidelines. FARMOVS’ analytical methods have been used in more than 3 000 pre-clinical and clinical trials, contributing to the manufacturing of pharmaceutical drugs that are now used by households across the globe.

At FARMOVS, Engelbrecht says, it is a “world filled with novel methods of analysis and subsequent technological integration that expands the horizons of clinical research forming an important part of the discovery and production of new life-saving medicines that is constantly improving the quality of life of people all over the world”.

Engelbrecht says: “New technology and innovation should be the building blocks of any laboratory, and among these are the three fastest sample production members of our Immunochemistry Laboratory team – the STARLet pipettors.”

“We chose the Microlab® STARLet apparatus by Hamilton, because of its ability to perform sample analysis in large quantities at a greater speed by means of robotic pipetting and robotic automated microplate reading, which is a semi-automated process.”

He shared his excitement about improvements in the field of immunoassay development for the purposes of pharmaceutical analysis. This involves the preparation of unique immunoanalytical reagents, analysis of new categories of compounds, methodology, and instrumentation. The most important examples in this field are the continuous development of bead-based immunoassays.

Staying competitive in the industry

Immunoassay methods, such as radioimmunoassay (RIA) and enzyme immunoassay (EIA), among others, are also used at FARMOVS to analyse macromolecules for clients. “The RIA method is used for the determination of several pharmaceutically important compounds in biological fluids. RIA requires a sample containing the antigen of interest, a complementary antibody, and a radiolabelled version of the antigen. To increase the selectivity of an assay, all samples are pre-treated to eliminate high molecular weight endogenous matrix components, including anti-drug antibodies,” explains Engelbrecht.

Although FARMOVS has adequate technology to provide market-related results, the plan is to expand the team to include a multiplex platform that is a sensitive, fully automated immunoassay platform with multiplexing and custom assay capability. “This will pave the way to use an even more sensitive method to quantify biomarkers in the fields of oncology, neurology, cardiology, inflammation, and infectious disease. We aim to remain competitive in our industry, so naturally we must recruit the brightest and most evolved to join the team,” he says.

News Archive

Plant scientist, Prof Zakkie Pretorius, contributes to food security with his research
2014-08-26

 
Many plant pathologists spend entire careers trying to outwit microbes, in particular those that cause diseases of economically important plants. In some cases control measures are simple and successful. In others, disease management remains an ongoing battle. 

Prof Zakkie Pretorius, Professor in the Department of Plant Sciences, works on a group of wheat diseases known as rusts. The name is derived from the powdery and brown appearance of these fungi.

Over the course of history wheat rusts have undergone what are notoriously known as boom and bust cycles. During boom periods the disease is controlled by means of heritable resistance in a variety, resulting in good yields. This resistance, though, is more often than not busted by the appearance of new rust strains with novel parasitic abilities. For resistance to remain durable, complex combinations of effective genes and chromosome regions have to be added in a single wheat variety.

In recent years, Prof Pretorius has focused on identifying and characterising resistance sources that have the potential to endure the onslaught of new rust races. His group has made great progress in the control of stripe rust – where several chromosome regions conditioning effective resistance have been identified.

Dr Renée Prins of CenGen and an affiliated UFS staff member, developed molecular markers for these resistance sources. These are now routinely applied in wheat breeding programmes in South Africa. In addition, Prof Pretorius collaborates with several countries to transfer newly discovered stem rust resistance genes to wheat, and in characterising effective sources of resistance in existing wheat collections.

His work is closely supported by research conducted by UFS colleagues, students and other partners on the genetics of the various wheat rust pathogens. These studies aim to answer questions about:
• the origin and relatedness of rust races,
• their highly successful parasitic ability, and
• their adaptation in different environments.

The UFS wheat rust programme adds significantly to the development of resistant varieties and thus more sustainable production of this important crop. 

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