Pharmacological Applications of Sutherlandia Frutescens Extracts

Sutherlandia frutescens, commonly known as the “cancer bush”, has been the focus of extensive pharmacological research owing to its rich profile of triterpene saponins (sutherlandiosides), flavonoids (sutherlandins), non-protein amino acids (notably L-canavanine) and other bioactive metabolites. Extracts of this South African medicinal plant display potent antioxidant activity through scavenging of reactive oxygen species and preservation of intracellular glutathione balance. Anti-inflammatory and immunomodulatory properties are mediated by downregulation of pro-inflammatory signalling pathways, including NFkB and MAPK cascades, and by promotion of an anti-inflammatory M2 macrophage phenotype. Cytotoxic and pro-apoptotic effects have been reported in diverse cancer cell lines, often through disruption of the PI3K/Akt survival pathway and activation of caspase-dependent cell death. Neuroprotective potential is emerging, with evidence of reduced microglial activation and nitric oxide production. Traditional applications in stress relief, chronic infection and metabolic disorders have thus been substantiated by modern mechanistic studies, supporting the plant’s promise as a source of novel botanical therapeutics with global significance.

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Pharmacological Applications of Sutherlandia Frutescens Extracts publication trend

The graph below shows the total number of articles in pharmacological applications of sutherlandia frutescens extracts across all publications each year (not limited to Nature Index journals).

Technical terms

Reactive oxygen species (ROS): Highly reactive molecules derived from oxygen that can damage cellular components.

Triterpene saponins: Plant secondary metabolites composed of a triterpene backbone linked to sugar moieties, often with membrane-modulating properties.

Chemotype: A chemically distinct entity in a plant species, defined by the unique composition of its secondary metabolites.

Nuclear factor kappa-light-chain-enhancer of activated B cells (NFkB): A transcription factor central to the regulation of inflammatory and immune responses.

Mitogen-activated protein kinases (MAPKs): A family of enzymes that transduce extracellular signals into cellular responses, including inflammation, proliferation and apoptosis.

References

1. LC–MS-based metabolomics assists with quality assessment and traceability of wild and cultivated plants of Sutherlandia frutescens (Fabaceae). South African Journal of Botany (2012).
2. Quantitative variation of amino acids in Sutherlandia frutescens (Cancer bush)—towards setting parameters for quality control. South African Journal of Botany (2012).
3. Antioxidant potential of Sutherlandia frutescens and its protective effects against oxidative stress in various cell cultures. BMC Complementary Medicine and Therapies (2014).
4. Sutherlandia frutescens Ethanol Extracts Inhibit Oxidative Stress and Inflammatory Responses in Neurons and Microglial Cells. PLOS ONE (2014).
5. Sutherlandia frutescens treatment induces apoptosis and modulates the PI3-kinase pathway in colon cancer cells. South African Journal of Botany (2015).
6. Regulation of M1/M2 macrophage polarization by Sutherlandia frutescens via NFkB and MAPK signaling pathways. South African Journal of Botany (2018).
7. The Implication of Chemotypic Variation on the Anti-Oxidant and Anti-Cancer Activities of Sutherlandia frutescens (L.) R.Br. (Fabaceae) from Different Geographic Locations. Antioxidants (2020).