Anticancer Polyphenols from Cultured Plant Cells: Production and New Bioengineering Strategies.

BACKGROUND

For many years, anticancer polyphenols have attracted significant attention as substances that prevent tumor growth and progression. These compounds are simple phenolic acids, complex phenolic acids, such as caffeoylquinic acids, rosmarinic acid and its derivatives, stilbenes, flavones, isoflavones, and anthocyanins. Some compounds, such as tea and coffee polyphenols, can be produced in large quantities by traditional methods, while many others cannot.

METHODS

We reviewed the available literature regarding the biotechnological aspects of polyphenol production by cultured plant cells and described approaches that have been used to obtain high levels of anticancer polyphenols (resveratrol, podophyllotoxin, genistein, lithospermic acid B, and others). Additionally, we provide our view on bioengineering strategies that could be important for the further improvement of cell biosynthetic characteristics.

RESULTS

The main trend in the field is the activation of entire biosynthetic pathways based on a comprehensive knowledge of protein-protein interaction networks involved in the regulation of polyphenol biosynthesis. As an example, we consider the jasmonate subnetwork, which will be increasingly used by plant biotechnologists. The next-generation technologies to sustained polyphenol production involve manipulations with microRNAs and reproduction of rol-gene effects.

CONCLUSION

Plant polyphenols play an important role in maintaining human health, and their role in the prevention of cancer will continue to grow. Targeting mechanisms involved in uncontrolled cancer cell proliferation will increasingly become the standard for cancer patients. Plant biotechnological studies aiming at producing anticancer compounds will be developed in parallel with these studies to provide a wider range of metabolites for each particular case.