rubia podantha/抗癌藥

Two novel antitumour bicyclic hexapeptides, named RA-XV and -XVI, were isolated from Rubia cordifolia and their structures were characterized by spectroscopic and chemical means.

An immunoassay system was established for the estimation of the quantity of an antitumor cyclohexapeptide, deoxybouvardin (RA-V) from Bouvardia ternifolia (Cav.) Schlecht, Rubia cordifolia L., and R. akane Nakai (Rubiaceae). First, RA-V was converted into a protein conjugate to make it an effective

An immunoassay system was established for the estimation of the quantity of an antitumor cyclic hexapeptide RA-VII (1) from Rubia cordifolia L. and R. akane Nakai (Rubiaceae). First, 1 was converted into its hapten, which was then conjugated with a carrier protein to be used as an effective antigen

Anti-tumour activity of RC-18, a pure isolate from Rubia cordifolia was repeatedly tested in different sets of experiments on a spectrum of experimental murine tumours, viz. P388, L1210, L5178Y, B16 melanoma, Lewis lung carcinoma and sarcoma-180. RC-18 exhibited significant increase in life span of

Metabolites of antitumor cyclic hexapeptides, RA-VII and -X which were isolated from Rubia cordifolia were studied by hepatic microsomal biotransformation in rats and in bile juice of rabbits to which these drugs were administered intravascularly. Their structures and conformations were elucidated

Using high-resolution proton nuclear magnetic resonance (1H-NMR) and carbon-13 nuclear magnetic resonance (13C-NMR) experiments, we have assigned three discernible configurational isomers observed in dimethyl sulfoxide-d6 (DMSO-d6) for an antitumor cyclic hexapeptide, RA-VII isolated from Rubia

Alkylehter and ester derivatives of the antitumor cyclic hexapeptide RA-V obtained from the roots of Rubia cordifolia (Rubiaceae) were synthesized and bioassayed for activity against cultured tumor cells. RA-V and its n-hexylether showed significant effects against human nasopharynx carcinoma (KB),

The antitumor activity of RA-700, a cyclic hexapeptide isolated from Rubia Cordifolia, was evaluated in comparison with deoxy-bouvardin and vincristine (VCR). As regards the proliferation of L1210 cultured cells, the cytotoxicity of RA-700 was similar to that of VCR but superior to that of

RA-VII, a bicyclic hexapeptide isolated from the roots of Rubia cordifolia, Rubia akane belongs to Rubiaceae-type cyclopeptides (RAs) and has attracted much attention for its potent anti-tumor activity and its bicyclic structure incorporating the isodityrosine moiety. In this work, hologram

Cancer is one of the leading causes of human death. Nanotechnology could offer new and optimised anticancer agents in order to fight cancer. It was shown that metal nanoparticles, in particular silver nanoparticles (AgNPs) were effective in cancer therapy. In this study, AgNPs were synthesised using

Four new bicyclic hexapeptides, named as RA-XI, -XII, XIII and -XIV were isolated from Rubia cordifolia and showed potent antitumor activities against P-388. The structures were elucidated from spectroscopic and chemical evidences. RA-XII, XIII and -XIV were proved to be unique bicyclic hexapeptidic

Aqueous extracts of 12 Chinese medicinal herbs, Anemarrhena asphodeloides, Artemisia argyi, Commiphora myrrha, Duchesnea indica, Gleditsia sinensis, Ligustrum lucidum, Rheum palmatum, Rubia cordifolia, Salvia chinensis, Scutellaria barbata, Uncaria rhychophylla and Vaccaria segetalis were evaluated

OBJECTIVE The aim was to search for anti-inflammatory and anticancer compounds from three medicinal plants, viz. Ventilago madraspatana Gaertn., Rubia cordifolia Linn. and Lantana camara Linn. METHODS The NO* scavenging potential of selected plant extracts was determined on LPS/IFN-gamma activated

Ethnopharmacological relevance: The roots of Rubia yunnanensis Diels (Chinese name 'Xiao-Hong-Shen'), a traditional Chinese medicine native to Yunnan province (China), have a long history of use for treating several diseases, such as

Emerging evidence has shown that metabolism, in particular the synthesis of fatty acids, has great significance for growth and metastasis of colorectal neoplasm. The previous results showed that RA-XII, a natural cyclopeptide isolated from Rubia yunnanensis, inhibits tumor growth and metastasis by