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The breast cancer resistance protein protects against a major chlorophyll-derived dietary phototoxin and protoporphyria.

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The breast cancer resistance protein (BCRPABCG2) is a member of the ATP-binding cassette family of drug transporters and confers resistance to various anticancer drugs. We show here that mice lacking Bcrp1Abcg2 become extremely sensitive to the dietary chlorophyll-breakdown product pheophorbide a,

Chlorophyll derivative mediated PDT versus methotrexate: an in vitro study using MCF-7 cells.

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BACKGROUND Breast cancer is the most common cause of cancer deaths among women worldwide. Although chemotherapy is a standard method for the treatment of breast cancer, the photodynamic therapy (PDT) is a recent promising modality for cancer diagnosis and treatment. Its major advantages over

The chlorophyllin-induced cell cycle arrest and apoptosis in human breast cancer MCF-7 cells is associated with ERK deactivation and Cyclin D1 depletion.

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Targeting the mitogen-activated protein kinases (MAPKs) has been suggested as a novel strategy to treat cancer. Chlorophyllin (CHL) is the sodium-copper salt of chlorophyll derivative and is a commonly used food dye for green coloration; CHL was found previously to retard growth of the human breast

9-Hydroxypheophorbide alpha-induced apoptotic death of MCF-7 breast cancer cells is mediated by c-Jun N-terminal kinase activation.

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Recently, we synthesized 9-hydroxypheophorbide alpha (9-HPbD), a new chlorophyll-derived photosensitizer. The photo-treatment of MCF-7 human breast cancer cells with 20 kJ/m2 of red light after 5 microM 9-HPbD pretreatment induced cell death, showed typical apoptotic features, i.e., chromatin

Identification of differential gene expression related to epirubicin-induced cardiomyopathy in breast cancer patients.

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Epirubicin is a potent chemotherapeutic agent for the treatment of breast cancer. However, it may lead to cardiotoxicity and cardiomyopathy, and no reliable biomarker was available for the early prediction of epirubicin-induced cardiomyopathy.Global gene

Biodegradable Microalgae-Based Carriers for Targeted Delivery and Imaging-Guided Therapy toward Lung Metastasis of Breast Cancer.

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High delivery efficiency, prolonged drug release, and low systemic toxicity are effective weapons for drug delivery systems to win the battle against metastatic breast cancer. Herein, it is shown that Spirulina platensis (S. platensis) can be used as natural carriers to construct a drug-loaded

Antiproliferative effect of chlorophyllin derived from a traditional Chinese medicine Bombyx mori excreta on human breast cancer MCF-7 cells.

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Chlorophyllin (CHL) is the sodium-copper salts of chlorophyll derivatives. In this study, the CHL was derived from a traditional Chinese medicine, the Bombyx mori excreta. The CHL, at concentrations 25-400 microg/ml, reduced the proliferation of HL-60, K-562, S-180, and MCF-7 cells by 8.2-95.7%

Optimization of Western blotting analysis for the isolation and detection of membrane xenobiotic transporter ABCG2.

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All organisms are exposed to numerous stress factors, which include harmful xenobiotics. The diversity of these compounds is enormous, thus in the course of evolution diverse biological defense mechanisms at various levels of organization have developed. One of them engages an evolutionarily

[Detecting bone marrow micrometastasis of gastric cancer by magnetic activated cell sorting combined with fluorescent activated cell sorting].

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OBJECTIVE Several methods are used to detect bone marrow micrometastasis of gastric cancer with different accuracies. In breast cancer, tumor cells in blood can be detected sensitively and specifically by magnetic activated cell sorting (MACS) and fluorescent activated cell sorting (FACS). This

Growth, photosynthesis and removal responses of the cyanobacteria Chroococcus sp. to malathion and malaoxon.

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Malathion is an organophosphorus pesticide widely used in agricultural crops, despite its toxicity. In addition, malaoxon occurs by oxidation of malathion being more toxic. The toxic effects of malathion and malaoxon in humans include hepatoxicity, breast cancer, genetic damage and endocrine

Analysis of the antiparasitic and anticancer activity of the coconut palm (Cocos nucifera L. ARECACEAE) from the natural reserve of Punta Patiño, Darién.

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Cocos nucifera (C. nucifera) (the coconut palm tree) has been traditionally used to fight a number of human diseases, but only a few studies have tested its components against parasites such as those that cause malaria. In this study, C. nucifera samples were collected from a private natural reserve

Biomineralized Biohybrid-Algae for Tumor Hypoxia Modulation and Cascade Radio-Photodynamic Therapy

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The biomineralization of biomaterials has shown extraordinary potential in cancer treatment, but the exploration of their in vivo applications is still insufficient. Here, we report a biohybrid microalgae system using a biomineralization approach to improve their biocompatibility, while keeping

Pheophorbide A: Fluorescent Bcrp Substrate to Measure Oral Drug-Drug Interactions in Real-Time In Vivo.

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We investigated whether pheophorbide A (PhA) could serve as a selective breast cancer resistance protein (BCRP) substrate (victim) to screen in vivo using fluorescent live animal imaging for transporter-mediated interactions with orally administered inhibitors (perpetrators), and whether that could

Cytotoxic Effects of Chlorophyllides in Ethanol Crude Extracts from Plant Leaves.

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Chlorophyllide (chlide) is a natural catabolic product of chlorophyll (Chl), produced through the activity of chlorophyllase (chlase). The growth inhibitory and antioxidant effects of chlide from different plant leaf extracts have not been reported. The aim of this study is to demonstrate that

Phytochemicals and cancer risk: a review of the epidemiological evidence.

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A number of epidemiological studies have investigated associations between various phytochemicals and cancer risk. Phytoestrogens and carotenoids are the two most commonly studied classes of phytochemicals; phytosterols, isothiocyanates, and chlorophyll also have been investigated, although to a

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