Bioreactor systems for in vitro production of foreign proteins using plant cell cultures

AbstractMedicinal plants have been used by mankind since ancient times, and many bioactive plant secondary metabolites are applied nowadays both directly as drugs, and as raw materials for semi-synthetic modifications. However, the structural complexity often thwarts cost-efficient chemical synthesis, and the usually low content in the native plant necessitates the processing of large amounts of field-cultivated raw material. The biotechnological manufacturing of such compounds offers a number of advantages like predictable, stable, and year-round sustainable production, scalability, and easier extraction and purification. Plant cell and tissue culture represents one possible alternative to the extraction of phytochemicals from plant material. Although a broad commercialization of such processes has not yet occurred, ongoing research indicates that plant in vitro systems such as cell suspension cultures, organ cultures, and transgenic hairy roots hold a promising potential as sources for bioactive compounds. Progress in the areas of biosynthetic pathway elucidation and genetic manipulation has expanded the possibilities to utilize plant metabolic engineering and heterologous production in microorganisms. This review aims to summarize recent advances in the in vitro production of high-value plant secondary metabolites of medicinal importance.Key points• Bioactive plant secondary metabolites are important for current and future use in medicine• In vitro production is a sustainable alternative to extraction from plants or costly chemical synthesis• Current research addresses plant cell and tissue culture, metabolic engineering, and heterologous production Graphical abstract

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Obtaining and Characteristics of Plant Cell Cultures of Аjuga turkestanica (Rgl.) - Producing of Phytoexdystroides

Biotekhnologiya ◽

10.21519/0234-2758-2019-35-3-50-56 ◽

2019 ◽

pp. 50-56

Author(s):

G.I. Sobolkova ◽

T.D. Kharitonov ◽

A.M. Nigmatullaev ◽

Sh.Sh. Sagdullaev ◽

D.V. Kochkin ◽

...

Keyword(s):

Cell Lines ◽

Plant Cell ◽

Cell Cultures ◽

Plant Cell Cultures ◽

Suspension Cell ◽

Wild Plant ◽

Russian Science ◽

Growth Cycles ◽

Ajuga Turkestanica

Callus cultures of Ajuga turkestanica (Rgl.) Briq. (Lamiaceae) were obtained from a wild plant, and the processes of morphogenesis in these cultures were studied. Depending on the hormonal composition of media, it is possible to obtain gemmogenesis or rhizogenesis in the first 6 to 8 growth cycles; after 10-15 growth cycles, the ability of morphogenesis was lost. Suspension cell cultures were initiated from some well-growing calluses. As a result, about one hundred calluses and suspension cell lines were obtained from the Ajuga turkestanica plant cells, a number of which were characterized by intensive growth and were analyzed by the HPLC-MS method for the presence of phytoecdysteroids. In most of the investigated lines, 20-hydroxyecdysone and turkesterone were found, the content of the first being 30-50 times higher than the second (in the most productive lines, 2.0-2.5 mg/g and 0.04-0.05 mg/g dry weight, respectively). An increase in the content of phytoecdysteroids in the in vitro cultivated cells by the end of the growing cycle was observed. However, phytoecdysteroids were not found in many of the obtained cell lines. Further research is needed to clarify the reasons for the presence or absence of phytoecdysteroids in Ajuga turkestanica plant cell cultures. Ajuga turkestanica, plant cell culture, growth regulators, differentiation, gemmogenesis, rhizogenesis, phytoecdysteroids, 20-hydroxy ecdysone, turkesterone The work was financially supported by the Russian Science Foundation (№ 16-14-00126).

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