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PhD study investigates cannabis as potential cancer treatment

12 December 2024 | Story André Damons | Photo André Damons

A lecturer and researcher from the University of the Free State (UFS) Department of Pharmacology hopes her research into the use of cannabis in reversing anticancer drug resistance is a step forward into treating various cancers especially in Southern Africa.

Dr Innocensia Mangoato graduated on Tuesday (10 December 2024) with the degree Doctor of Philosophy with specialisation in pharmacology at the Faculty of Health Sciences’ December graduation ceremony. She started her career as a research scientist in the area of African traditional medicines in 2018 and her research received both national and international recognition.

“It’s an amazing (feeling to graduate today). My PhD journey was smooth and beautiful and with mentorship of Prof (Motlalepula) Matsabisa, who groomed me well, I did not shed a tear,” said Dr Mangoato. Dr Gudrun S Ulrich-Merzenich from the University of Bonn in Germany, was her co-supervisor with Prof Matsabisa.

According to the graduation programme, Dr Mangoato, Lecturer and Researcher in the UFS Department of Pharmacology, with her thesis titled Investigating the anticancer and possible resistant reversal effects of cannabis sativa l. extracts in cervical cancer cell lines and modulation of ABC transporters comprehensively explored the therapeutic potential of Cannabis sativa L. in overcoming drug resistance in cervical cancer using in vitro and network pharmacology approaches.

A step forward for treating various cancers

The research looked at the chemical fingerprints and pharmacological targets of C. sativa L. extracts, highlighting its antiproliferative properties against normal non-cancerous cells, cervical cancer cells and the cisplatin-resistant cervical cancer cells. Through PCR analysis, distinct gene expression profiles were identified, revealing the potential effects of combination treatments to counteract cisplatin resistance by downregulating genes associated with drug transporters and crucial signalling pathways. This work provides valuable insights into innovative therapeutic strategies for improving cervical cancer treatment, highlighting new avenues for overcoming resistance and enhancing treatment efficacy though the possible use of plant extracts.

“I hope my research takes a step forward in treating various cancers – especially gynaecology cancers in the Southern Hemisphere in Africa. Hopefully the research can later transcend into clinical trials and hopefully influence more policymakers. We also hope to further develop cannabis to be used as an adjuvant therapy for those drugs that are failing to treat cancer,” says Dr Mangoato, who was the recipient of the Women in Science Master’s Student in 2018.

Her graduation was also a proud moment for Prof Matsabisa, an expert in traditional African medicine, who was like a father to her during her studies. “Prof identified me from my honours degree and walked this journey with me. He has been a great mentor, a father and an amazing supervisor.”

Dr Mangoato says she will for now focus on research only and helping and monitoring upcoming researchers, especially female researchers as there is a scarcity of them her field.

News Archive

Young researchers are equipped to participate in projects relevant in global context

2017-09-05

This group of early career researchers received bioinformatics
training in Worcester in the UK from Dr Diane Saunders of the
John Innes Centre in the UK.
Photo: Supplied

The interdisciplinary field that develops methods and software tools to understand biological data is known as bioinformatics. According to Dr Renée Prins, a research fellow in the Department of Plant Sciences at the University of the Free State, there are few tertiary institutions in South Africa that offer a postgraduate degree in Bioinformatics.

“Most institutions focus either on humans, human diseases, forest trees and their pathogens. They usually do not have spare capacity to assist researchers, for instance, those working on crops in the agricultural sector,” Dr Prins said.

Big data sets need significant skills
With the advancements made in genomics such as high throughput DNA marker platforms and next-generation sequencing technologies, the data sets biologists have to deal with have grown massively big and cannot be dealt with unless you have significant computer skills.

Dr Prins believes that all young researchers need some level of training in this field to be effective in future. The British Council Researcher Links, being run by the Newton Fund, gives early career researchers across selected partner countries the opportunity to form international connections through fully funded workshops and travel grants. Dr Prins made use of this opportunity and with the assistance of the Department of Research Development at the UFS, she arranged for Dr Diane Saunders of the John Innes Centre in the UK, a bioinformatician of note, to present training to a group of 20 early career researchers in Worcester in the UK.

Providing training with Dr Saunders were two other bioinformaticians from the UK, Dr Burkhard Steuernagel (John Innes Centre) and Dr Robert Davey (Earlham Institute). From the UFS side, Eleanor van der Westhuizen and Dr Henriëtte van den Berg (former UFS academic) acted as mentors, providing guidance on funding opportunities and career development skills.

Participating in projects in a global context
The researchers attending the training came from research institutions or academia, and they work involving plants (predominantly wheat) or plant pathogens. A limited number of participants from the commercial sector, including private South African companies focusing on plant breeding and molecular genetics lab work on agriculturally important crops also benefited from the training.

“Tertiary institutions in South Africa have the obligation to ensure that young scientists are equipped with bioinformatics skills. If they are not equipped with the necessary skills, they will not be able to participate in research projects that are relevant in a global context,” said Dr Prins.

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