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Protoapigenone, a novel flavonoid, inhibits ovarian cancer cell growth in vitro and in vivo.

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Flavonoids are polyphenolic compounds and capable of inhibiting the growth of human cancer cells. Protoapigenone, a novel flavonoid, was isolated from the whole plant Thelypteris torresiana (Gaud), a native fern in Taiwan. In the present study, we explored the cytotoxic effects of protoapigenone on

Fern plant-derived protoapigenone leads to DNA damage, apoptosis, and G(2)/m arrest in lung cancer cell line H1299.

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Protoapigenone, isolated from the native fern plant Thelypteris torresiana, has anticancer activity against some cancer cells. However, the toxicological mechanism for protoapigenone is still unknown. Here, we investigated the anticancer effect of protoapigenone on human lung cancer cell lines. The

[Flavonoids with special B-ring from Macrothelypteris viridifrons and their anti-proliferative effects on tumor cell].

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OBJECTIVE To study the chemical constituents of Macrothelypteris viridifrons and their anti-proliferative effects on tumor cell. METHODS The compounds were isolated by column chromatography with silica gel, C18 reverse-phase silica gel, sephadex LH-20, and their structures were elucidated on the

A novel non-aromatic B-ring flavonoid: isolation, structure elucidation and its induction of apoptosis in human colon HT-29 tumor cell via the reactive oxygen species-mitochondrial dysfunction and MAPK activation.

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The aim of the present study was to elucidate the chemical structure of a novel non-aromatic B-ring flavonoid (DHEC) isolated from Macrothelypteris viridifrons and to evaluate its putative molecular mechanism of action on induction of apoptosis in human colon HT-29 cancer cell. On the basis of MS,

Anti-tumor and anti-angiogenic effects of Macrothelypteris viridifrons and its constituents by HPLC-DAD/MS analysis.

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BACKGROUND Macrothelypteris viridifrons is widely distributed in south of China and has been used as folk medicine to treat cancer, hydropsy, and traumatic bleeding. OBJECTIVE To investigate the chemical constituents and the anti-tumor and anti-angiogenic effects of Macrothelypteris

Protective potential of the methanol extract of Macrothelypteris oligophlebia rhizomes for chronic non-bacterial prostatitis in rats.

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The protective potential of the methanol extract of Macrothelypteris oligophlebia rhizomes (MMO) for chronic non-bacterial prostatitis (CNP) in rats was investigated in the present study. Carrageenan-induced CNP in rats was established. Fifty rats were randomly divided into sham-operated (sham-ope)

First total synthesis of protoapigenone and its analogues as potent cytotoxic agents.

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Protoapigenone (1), isolated from Thelypteris torresiana, previously showed significant cytotoxic activity against five human cancer cell lines. In a continued structure-activity relationship study, the first total synthesis and modification of 1 were achieved. All synthesized compounds and related

DEDC, a new flavonoid induces apoptosis via a ROS-dependent mechanism in human neuroblastoma SH-SY5Y cells.

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The poor prognosis of neuroblastoma and lack of effective remedies have necessitated the application of new therapeutic scheme. Over the past few years, it has been found that flavonoids could exert specific cytotoxic activity towards cancer cells.

New cytotoxic flavonoids from Thelypteris torresiana.

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During our search for anti-tumor agents from pteridophytes, three new flavonoids, protoapigenone (1), 5',6'-dihydro-6'-methoxyprotoapigenone (2), and protoapigenin (3), along with four known compounds, protoapigenin 4'- O-beta- D-glucoside (4), apigenin 4'- O-beta- D-glucoside (5), kaempferol 3-

The antagonism between apigenin and protoapigenone to the PDK-1 target in Macrothelypteris torresiana.

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Apigenin and protoapigenone that both have the activities against various cancer cell lines co-exist in Macrothelypteris torresiana, while the extracts of M. torresiana couldn't achieve the fine anti-tumor effects for the existence of potent anti-tumor compounds. This study disclosed an antagonism

In vitro and in vivo antitumor activity of Macrothelypteris torresiana and its acute/subacute oral toxicity.

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The aim of this study was to evaluate the antitumor potential of Macrothelypteris torresiana by studying in vitro antitumor activity of the protoapigenone, as well as in vivo antitumor activity and acute/subacute oral toxicity of the total flavonoid fraction from the roots of M. torresiana.

DICO, a novel nonaromatic B-ring flavonoid, induces G2/M cell cycle arrest and apoptosis in human hepatoma cells.

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DICO was a novel nonaromatic B-ring flavonoid obtained from Macrothelypteris torresiana. In the present work, we investigated the antitumor activity and the antineoplastic mechanism of DICO. Our study showed that DICO inhibited the growth of HepG2 cells in dose and time-dependent manners. As well as

Protoapigenone derivatives: albumin binding properties and effects on HepG2 cells.

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Protoapigenone (Pa) is a flavone aglycone with a p-quinol structure in its B-ring. It was first discovered in Thelypteris torresiana, a native fern in Taiwan. Recent studies highlighted that protoapigenone and some of its derivatives show very potent anticancer activity against several types of

HPLC analysis, optimization of extraction and purification conditions, biological evaluation of total protoflavones from Macrothelypteris viridifrons.

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The present study aims to evaluate phytochemical and pharmacological potential of total protoflavones from Macrothelypteris viridifrons. In the phytochemical study, an HPLC analysis method was established, and the optimal extraction and purification conditions were analyzed. The extractive condition

Flavonoids from the aerial parts of Macrothelypteris torresiana.

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Two new flavone derivatives (1 and 2) were isolated from the aerial parts of Macrothelypteris torresiana, along with four known flavonoids: protoapigenin, apigenin, kaempferol and quercetin. The structures were determined on the basis of spectroscopic data. Compound 1 showed weak cytotoxic activity

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