Ap Applicati tions ons in in Pl Plant t Scien Sciences ces The lesser periwinkle (Vinca minor L.; Apocynaceae) is an evergreen subshrub that is native to Southern Europe but has become naturalized in wider parts of Central Europe and North America (Meusel et al., 1978 ; Swearingen et al., 2010). In Germany, V. minor is nowadays mainly found in the surroundings of ancient Roman remains, medieval...

We have used a structure-activity approach to investigate whether the Vinca alkaloids inhibit cell proliferation primarily by means of their effects on mitotic spindle microtubules or by another mechanism or by a combination of mechanisms. Five Vinca alkaloids were used to investigate the relationship in HeLa cells between inhibition of cell proliferation and blockage of mitosis, alteration of ...

The tubulin vinca domain is the target of widely different microtubule inhibitors that interfere with the binding of vinblastine. Although all these ligands inhibit the hydrolysis of GTP, they affect nucleotide exchange to variable extents. The structures of two vinca domain antimitotic peptides--phomopsin A and soblidotin (a dolastatin 10 analogue)--bound to tubulin in a complex with a stathmi...

Aberrant expression of beta-tubulin isotypes is frequently described in tumor tissues and tubulin-binding agent (TBA)-resistant cell lines. There is limited understanding of the role of specific beta-tubulin isotypes in cellular sensitivity to TBAs, and to gain insights into the functional role of betaII- and betaIVb-tubulin, we examined these isotypes in lung cancer cell lines NCI-H460 (H460) ...

The Effects of Two Alkaloids Derived from Vinca rosea on the Malignant Cells of Hodgkin’s Disease, Lymphosarcoma and Acute Leukemia in Vivo Alberto M. Marmont and Eugenio E. Damasio 1 Studies of Lymphocyte Kinetics in Man Seymour Perry, George L. Irvin, 111, and Jacqueline Whang 22 The Effects of Allografts of Thymic Epithelial Reticular Cells on the Lymphoid Tissues of Neonatally Thymectomized...

Recently detected but unidentified cytokinin activity in crown gall tumor tissue from Vinca rosea L. grown on media containing sources of reduced nitrogen has now been attributed to two adenine-type cytokinins. These compounds are glucopyranosyl derivatives of zeatin and ribosylzeatin. The substitution in each case is on the isopentenyl chain of the parent compound. Neither of these compounds h...