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- Title
Biosynthesis stimulation of nor-secotriterpene anxiolytics in cell suspension cultures of Galphimia glauca Cav.
- Authors
Osuna, Lidia; Tapia, Nadia; Zamilpa, Alejandro; Jiménez‐Ferrer, Enrique; Tortoriello, Jaime
- Abstract
Galphimia glauca produces compounds denominated galphimines (galphimine- A, galphimine-B and galphimine- E). Due to their important anxiolytic activity, we initiated in vitro cultures of the species with the purpose of developing a biotechnological process for obtaining galphimines. In this work, we stimulated the biosynthesis and excretion of galphimines with two-phase batch-type cell suspension cultures of G. glauca. The effect of nutritional variation and the 2,4-dichlorophenoxy acetic acid added to Murashige & Skoog (MS) culture medium was evaluated. Later, we evaluated the effect of the stimulation with calcium and methyl jasmonate (MeJ). The greatest production of galphimine-B (3.39 × 10−5 g/L day−1) was obtained on day 40 of kinetics, and induced by a treatment containing concentrations of nitrates and phosphate that are double of those normally used in MS medium, without sucrose but with added 2,4-dichlorophenoxy acetic acid (4 mg/L). Time of galphimine-B biosynthesis diminished due to the effect of Me J in combination with calcium, and induced the excretion (100%) of galphimine-B (6.35 × 10−5 g/L day−1) into the culture medium. Thus, the use of calcium and Me J comprises a viable alternative to stimulate the production and excretion of galphimine-B and galphimine- A in batch-type cultures of G. glauca in modified MS medium. Once optimized, the production of the anxiolytic compounds can be scaled up to the industrial level.
- Subjects
BIOSYNTHESIS; BIOACTIVE compounds; MALPIGHIACEAE; CELL culture; ACETIC acid; NITRATES; PHOSPHATES; CALCIUM
- Publication
Engineering in Life Sciences, 2014, Vol 14, Issue 1, p68
- ISSN
1618-0240
- Publication type
Article
- DOI
10.1002/elsc.201200209