Translator Disclaimer
1 January 2004 AN ENCLOSED-CHAMBER LABELING SYSTEM FOR THE SAFE 14C-ENRICHMENT OF PHYTOCHEMICALS IN PLANT CELL SUSPENSION CULTURES
Author Affiliations +
Abstract

Various plant secondary products have been implicated in the promotion of good health or the prevention of disease in humans, but little is known about the way they are absorbed in the gut, or in which tissues they are deposited throughout the body. While these issues could be studied if the phytochemicals were isotopically labeled, generating labeled molecules often is problematic because many compounds of interest can be synthesized only in planta at present. In order to generate 14C-labeled phytochemicals of high radioactive enrichment, we developed an enclosed-chamber labeling system in which cell suspension cultures can be safely and efficiently grown when supplied with 14C-enriched precursors. The system is designed to hold culture flasks within a clear, polyacrylic compartment that is affixed to the top of a rotary shaker. The flow-through gas exchange nature of the system allows for O2 replenishment and complete capture of respired 14CO2 throughout the entire period of cell culture. Air is circulated internally with the aid of a small fan, and chamber air temperature is monitored continuously with an internal temperature probe and data logger. Production runs of 12–14 d with Vaccinium pahalae (ohelo berry) and Vitis vinifera (grape) suspension cultures, using [14C]sucrose as the carbon source, demonstrated a 20–23% efficiency of 14C incorporation into the flavonoid-rich fractions. Further studies with ohelo cell cultures showed that flavonoids were produced with either sucrose or glucose as the carbohydrate source, although flavonoid productivity (measured as anthocyanins) was higher with sucrose. This comprehensive chamber system should have broad applicability with numerous cell types and can be used to generate a wide array of labeled phytochemicals.

MICHAEL A. GRUSAK, RANDY B. ROGERS, GAD G. YOUSEF, JOHN W. ERDMAN Jr., and MARY ANN LILA "AN ENCLOSED-CHAMBER LABELING SYSTEM FOR THE SAFE 14C-ENRICHMENT OF PHYTOCHEMICALS IN PLANT CELL SUSPENSION CULTURES," In Vitro Cellular and Developmental Biology - Plant 40(1), 80-85, (1 January 2004). https://doi.org/10.1079/IVP2003484
Received: 13 February 2003; Accepted: 1 August 2003; Published: 1 January 2004
JOURNAL ARTICLE
6 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top