Cancer-Produced Metabolites of 5-Lipoxygenase Induce Tumor-Evoked Regulatory B Cells via Peroxisome Proliferator–Activated Receptor a

Cancer-produced metabolites of 5-lipoxygenase induce tumor-evoked regulatory B cells via peroxisome proliferator-activated receptor α.

Breast cancer cells facilitate distant metastasis through the induction of immunosuppressive regulatory B cells, designated tBregs. We report in this study that, to do this, breast cancer cells produce metabolites of the 5-lipoxygenase pathway such as leukotriene B4 to activate the peroxisome proliferator-activated receptor α (PPARα) in B cells. Inactivation of leukotriene B4 signaling or genet...

Role of peroxisome proliferator-activated receptor alpha and gamma in antiangiogenic effect of pomegranate peel extract

Objective(s): Herbal medicines are promising cancer preventive candidates. It has been shown that Punica granatum L. could inhibit angiogenesis and tumor invasion. In this study, we investigated whether the anti-angiogenic effect of pomegranate peel extract (PPE) is partly attributable to Peroxisome proliferator-activated receptors (PPARs) activation in the Human Umbilical Vein Endothelial Cell...

اثرایمونوتراپیوتیک آل- ترانس رتینوئیک اسید بر دیابت تیپ 1 در موش و تاثیر آن بر بیان ژن (peroxisome proliferator- activated receptor gamma (PPARγ

Background: All-trans retinoic acid (ATRA) has a variety of biological activities, including immunomodulatory action in a number of inflammatory and autoimmune diseases. The purpose of this study was to investigate the effects of all-trans retinoic acid on the treatment of autoimmune diabetes in mice and its effects on expressions of Peroxisome Proliferator-Activated Receptor gamma (PPARγ...

Prostaglandin D2 and Its Metabolites Induce Caspase-Dependent Granulocyte Apoptosis That Is Mediated Via Inhibition of I B Degradation Using a Peroxisome Proliferator-Activated Receptor- -Independent Mechanism

Five-lipoxygenase inhibitors can mediate apoptosis in human breast cancer cell lines through complex eicosanoid interactions.

Many arachidonic acid metabolites function in growth signaling for epithelial cells, and we previously reported the expression of the major arachidonic acid enzymes in human breast cancer cell lines. To evaluate the role of the 5-lipoxygenase (5-LO) pathway on breast cancer growth regulation, we exposed cells to insulinlike growth factor-1 or transferrin, which increased the levels of the 5-LO ...