The in vitro production of an anthocyanin from callus cultures of Oxalis linearis

1995 ◽  
Vol 40 (1) ◽  
pp. 55-58 ◽  
Author(s):  
H. J. Meyer ◽  
J. Van Staden
Keyword(s):  
Callus Cultures ◽  
In Vitro Production ◽  
Vitro Production

scholarly journals Coumarin Compounds in Coronilla scorpioides Callus Cultures

2014 ◽  
Vol 9 (4) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Anna Piovan ◽  
Raffaella Filippini ◽  
Gabbriella Innocenti
Keyword(s):  
High Frequency ◽  
Principal Component ◽  
Callus Cultures ◽  
In Vitro Production ◽  
Root Explants ◽  
Stem Internode ◽  
The Media ◽  
Coumarin Compounds ◽  
Vitro Production

Coronilla scorpioides (L.) W.D.J. Koch is known for producing several compounds with pharmaceutical interest, such as the hydroxycoumarins umbelliferone, scopoletin and daphnoretin, the dihydrofuranocoumarin marmesin, and the furocoumarin psoralen. In vitro callus cultures of C. scorpioides were established from hypocotyl, leaf, stem internode and root explants in order to evaluate the possibility of in vitro production of these active secondary metabolites. Calli were obtained with high frequency from all the explant types both in B5 and MS medium. However, after the third subculture, B5 medium, giving the best results, was selected for subsequent transfers. Homogeneous calli were kept either in darkness or in light. Chemical analyses showed that scopoletin and the intermediate products of the biogenetic pathway of psoralen, umbelliferone and marmesin, were always present in the calli and excreted into the media, while daphnoretin was never detected. Light seems to be a prerequisite for psoralen biosynthesis. Root-derived calli produced a significantly higher amount of psoralen (137.5 μg g−1 DW). Principal component analysis showed that umbelliferone, marmesin and psoralen contents are related to variables associated with different explant types.

scholarly journals In Vitro Production of Echioidinin, 7-O-Methywogonin from Callus Cultures of Andrographis lineata and Their Cytotoxicity on Cancer Cells

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0141154 ◽  
Author(s):  
Arifullah Mohammed ◽  
Kishore K. Chiruvella ◽  
Yerra Koteswara Rao ◽  
Madamanchi Geethangili ◽  
Sathees C. Raghavan ◽  
...  
Keyword(s):  
Cancer Cells ◽  
Callus Cultures ◽  
In Vitro Production ◽  
Vitro Production

THE IN VITRO PRODUCTION OF ANDROGENS BY FOLLICULAR TISSUE OF RABBITS

1964 ◽  
Vol 47 (2) ◽  
pp. 306-313 ◽  
Author(s):  
Denis Gospodarowicz
Keyword(s):  
In Vitro Production ◽  
Vitro Production

ABSTRACT Incubation in vitro of rabbit follicles in separate experiments with dehydroepiandrosterone-14C (DHEA-14C), progesterone-14C and pregnenolone-3H in the presence of FSH gave the following results: 39 % of the radioactivity of DHEA-14C is converted to androstenedione and testosterone, while only 3 % of the radioactivity of either progesterone-14C or pregnenolone-3H is found in the androgen fraction. From the ratio of testosterone to androstenedione formed from the three precursors, the results are interpreted to mean that DHEA and pregnenolone, and not progesterone, are precursors of androgens in the follicle.

Oxygenation of 18-hydroxycorticosterone as the final reaction for aldosterone biosynthesis

1984 ◽  
Vol 107 (3) ◽  
pp. 395-400 ◽  
Author(s):  
Itaru Kojima ◽  
Etsuro Ogata ◽  
Hiroshi Inano ◽  
Bun-ichi Tamaoki
Keyword(s):  
Carbon Monoxide ◽  
Hydroxysteroid Dehydrogenase ◽  
Dependent Manner ◽  
In Vitro Production ◽  
Mitochondrial Preparation ◽  
Final Reaction ◽  
Vitro Production ◽  
Dose Dependent ◽  
Cytochrome P 450

Abstract. Incubation of 18-hydroxycorticosterone with the sonicated mitochondrial preparation of bovine adrenal glomerulosa tissue leads to the production of aldosterone, as measured by radioimmunoassay. The in vitro production of aldosterone from 18-hydroxycorticosterone requires both molecular oxygen and NADPH, and is inhibited by carbon monoxide. Cytochrome P-450 inhibitors such as metyrapone, SU 8000. SU 10603, SKF 525A, amphenone B and spironolactone decrease the biosynthesis of aldosterone from 18-hydroxycorticosterone. These results support the conclusion that the final reaction in aldosterone synthesis from 18-hydroxycorticosterone is catalyzed by an oxygenase, but not by 18-hydroxysteroid dehydrogenase. By the same preparation, the production of [3H]aldosterone but not [3H]18-hydroxycorticosterone from [1,2-3H ]corticosterone is decreased in a dose-dependent manner by addition of non-radioactive 18-hydroxycorticosterone.

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