Category: flavonoids

Mel’s Diner

Melatonin potentiates flavone-induced apoptosis in human colon cancer cells by increasing the level of glycolytic end products.

– Melatonin has been described to possess cell protecting activity in normal cells but was shown to induce apoptotic cell death in cancer cells. It potentiates apoptosis induced by the flavonoid flavone significantly. A combination of flavone and melatonin increased caspase-3-like activity 30-fold and 80% of cells exhibited fragmentation of DNA when compared to untreated controls. Melatonin caused an increase in cytosolic lactate levels that most likely allows the flavone-induced activation of the mitochondrial pyruvate/lactate importer to deliver more substrates to mitochondrial respiration.

Melatonin Enhances the Anti-Tumor Effect of Fisetin

– Melatonin is a hormone identified in plants and pineal glands of mammals and possesses diverse physiological functions. Fisetin is a bio-flavonoid widely found in plants and exerts antitumor activity in several types of human cancers. However, the combinational effect of melatonin and fisetin on antitumor activity, especially in melanoma treatment, remains unclear. Here, we tested the hypothesis that melatonin could enhance the antitumor activity of fisetin in melanoma cells and identified the underlying molecular mechanisms. The combinational treatment of melanoma cells with fisetin and melatonin significantly enhanced the inhibitions of cell viability, cell migration and clone formation, and the induction of apoptosis when compared with the treatment of fisetin alone. Moreover, such enhancement of antitumor effect by melatonin was found to be mediated through the modulation of the multiply signaling pathways in melanoma cells.

 

linkRoll_2020.04.20

Melatonin Enhances the Anti-Tumor Effect of Fisetin

An Association Map on the Effect of Flavonoids on the Signaling Pathways in Colorectal Cancer – Flavonoids, Flavonols, Quercetin, Kaempferol, Myricetin, Fisetin, Rutin, Flavanones, Hesperidin, Naringenin, Silibinin, Eriodictyol, Flavones, Acacetin, Apigenin, Chrysin, Tangeretin, Luteolin, Baicalein, Nobiletin, Flavan-3-ols (flavanols), Catechins, Proanthocyanidin, Flavanonols, Pelargonidin, Peonidin, Cyanidin, Delphinidin, Malvidin.

PDF – An Association Map on the Effect of Flavonoids on the Signaling Pathways in Colorectal Cancer

Medical and Dietary Uses of N-Acetylcysteine

Microbes in the Era of Circadian Medicine

Bacterial circadian rhythm | Circadian advantage

Your Body, Your System – Dr. Shiva

Escin induces caspase-dependent apoptosis and autophagy

How do anti-mitotic drugs kill cancer cells?

Anti-tubulin antibodies in autoimmune thyroid disorders.

Mitotic inhibitor

Hesperidin suppressed proliferations of both human breast cancer and androgen-dependent prostate cancer cells.

The Flavonoids Hesperidin and Rutin Promote Neural Crest Cell Survival

Neural crest cells are a temporary group of cells unique to vertebrates that arise from the embryonic ectoderm germ layer, and in turn give rise to a diverse cell lineage—including melanocytes, craniofacial cartilage and bone, smooth muscle, peripheral and enteric neurons and glia.

The Flavonoids Hesperidin and Rutin Promote Neural Crest Cell Survival

The neural crest (NC) corresponds to a collection of multipotent and oligopotent progenitors endowed with both neural and mesenchymal potentials. The derivatives of the NC at trunk level include neurons and glial cells of the peripheral nervous system in addition to melanocytes, smooth muscle cells and some endocrine cells. Environmental factors control the fate decisions of NC cells. Despite the well-known influence of flavonoids on the central nervous system, the issue of whether they also influence NC cells has not been yet addressed. Flavonoids are polyphenolic compounds that are integral components of the human diet.

The biological activities of these compounds cover a very broad spectrum, from anticancer and antibacterial activities to inhibition of bone reabsorption and modulation of inflammatory response. In the present work, we have investigated the actions of the flavonoids hesperidin, rutin and quercetin on NC cells of quail, in vitro. We show for the first time, that hesperidin and rutin increase the viability of trunk NC cells in culture, without affecting cell differentiation and proliferation. The molecular mechanism of this action is dependent on ERK2 and PI3K pathways. Quercetin had no effect on NC progenitors. Taken together, these results suggest that flavonoids hesperidin and rutin increase NC cell survival, which may be useful against the toxicity of some chemicals during embryonic development.