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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 scientists address wheat rust diseases at SASPP congress
2015-02-02

Pictured from the left are: Prof Zakkie Pretorius, Dr Botma Visser and Howard Castelyn.
Photo: Supplied

In his research, Dr Botma Visser, researcher in the Department of Plant Sciences at the University of the Free State, highlighted the population dynamics of the stem rust fungus (Puccinia graminis f. sp. tritici) in Southern Africa. In recent years, two foreign stem rust races were introduced to South Africa, and a local virulence adaptation occurred in a third.

All of these races form part of the Ug99 group, a highly virulent collection of rust races endangering wheat production in many parts of the world. Despite the fact that half of the members of the Ug99 race group is prevalent in South Africa, Dr Visser’s work has clearly shown that Ug99 did not have its origin here. This emphasised the need to include neighbouring countries in the annual stem rust surveys, to proactively identify new races that could threaten local wheat production. In his research, Dr Visser also mentioned the way in which he has optimised modern molecular tools to accurately detect Ug99 isolates.

Dr Visser is one of three scientists from the Department of Plant Sciences that addressed delegates attending the biennial congress of the Southern African Society for Plant Pathology (SASPP) on the Bloemfontein Campus earlier this month on progress regarding research on wheat rust diseases conducted at the UFS.

Howard Castelyn, a PhD student in Plant Sciences, presented his research on quantifying fungal growth of the stem rust pathogen in wheat varieties displaying genetic resistance. This resistance, which is best expressed in adult plants, has the potential to remain durable in the presence of new rust variants. His presentation at the congress focused on optimising microscopic and molecular techniques to track fungal development in stem tissues of adult plants. These results now allow scientists to link rust infection levels and cellular responses with particular resistance genes expressed by the wheat plant, and contributing to the understanding and exploitation of durable resistance.

Prof Zakkie Pretorius presented his research, explaining how new genetic diversity for resistance to the stripe (yellow) rust fungus (Puccinia striiformis) is discovered, analysed and applied in South Africa. This research, conducted in collaboration with Dr Renée Prins and her team at CenGen, is unravelling the genetic basis of stripe rust resistance in a promising wheat line identified by Dr Willem Boshoff, a plant breeder at Pannar. The line and DNA markers to track the resistance genes will soon be introduced to South African wheat breeding programmes.

The rust research programme at the UFS contributes significantly to the successful control of these important crop diseases.

In addition to the contributions by the UFS, rust fungi featured prominently at the SASPP, with first reports of new diseases on sugar cane and Acacia and Eucalyptus trees in South Africa. A case study of the use of a rust fungus as a biological control agent for invasive plant species in the Western Cape, was also presented.

 

For more information or enquiries contact news@ufs.ac.za .

 

 

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