Pharmaceutical Applications of Electrospraying.

Therapeutic potential of gambogic acid, a caged xanthone, to target cancer

Gambogic acid augments black phosphorus quantum dots (BPQDs)-based synergistic chemo-photothermal therapy through downregulating heat shock protein expression

Gambogic acid: A shining natural compound to nanomedicine for cancer therapeutics.

Gambogic acid (GA), a kind of dry resin secreted by the Garcinia hanburyi tree, is a natural active ingredient with various biological activities, such as anti-cancer, anti-inflammatory, antioxidant, anti-bacterial effects, etc. An increasing amount of evidence indicates that GA has obvious anti-cancer effects via various molecular mechanisms, including the induction of apoptosis, autophagy, cell cycle arrest and the inhibition of invasion, metastasis, angiogenesis. In order to improve the efficacy in cancer treatment, nanometer drug delivery systems have been employed to load GA and form micelles, nanoparticles, nanofibers, and so on. In this review, we aim to offer a summary of chemical structure and properties, anti-cancer activities, drug delivery systems and combination therapy of GA, which might provide a reference to promote the development and clinical application of GA.

/pdf/gambogic-acid-as-a-candidate-for-cancer-therapy-a-review-2hgpiocso5.pdf

Gambogic Acid as a Candidate for Cancer Therapy: A Review.

Lung cancer is a kind of malignant tumor with high morbidity and metastasis tendency. Gambogic acid (GA) has demonstrated significant antitumor activity in vitro, but its poor water-solubility and adverse effects restrict its application in vivo and in clinic. In this study, a passive-targeting GA delivery system was prepared for orthotopic Lewis lung carcinoma model mice. Besides the ∼7 μm size distribution, slow and steady in vitro drug release in a week, high targeting effect to lung, effective restoration of histomorphological abnormalities in lung, maintaining on bodyweight, and prolongation on survival time, excellent improvements of the GA-loaded particles on physiological and psychological statuses and obvious inhibition on tumor metastasis to liver have also been observed, through the measurements of Porsolt forced swim, hypoxic tolerance time, ultrastructure of pulmonary capillary, pulmonary vascular permeability, and hepatic histological change. These results suggest that this GA-loaded particl...

Efficient Targeting Drug Delivery System for Lewis Lung Carcinoma, Leading to Histomorphological Abnormalities Restoration, Physiological and Psychological Statuses Improvement, and Metastasis Inhibition.

This study aims to assess the targeted effect and antitumor efficacy of Gambogic-acid-loaded particles (GA-Ps). GA-Ps with uniform particle sizes of 69.8 ± 17.8 nm (GA-P1), 185.6 ± 33.8 nm (GA-P2), 357.8 ± 81.5 nm (GA-P3), and 7.56 ± 0.95 μm (GA-P4) were prepared using an electrospray technique and exhibited extremely high entrapment efficiency. As the particle size increased from the nano- to microscale, the in vitro GA release rate sharply decreased. After tail-vein injection in mice, GA-P samples GA-P1, GA-P2, GA-P3, and GA-P4 improved the uptake of GA 1.67-times in the liver, 1.78-times in the liver, 2.18-times in the spleen, and 2.35-times in the lung, respectively, compared with GA solution (GA-S). The antitumor efficacy of GA-P2, with an 82.51% targeting efficiency (Te) for the liver, was examined in hepatocellular carcinoma (HCC) model mice. After 2 weeks of administration, HCC mice in the GA-P2 group exhibited a lower degree of tumor invasion and cell lesions in hepatic tissue, recovered liver function, and significantly prolonged survival time, compared with mice in the model, GA-S, and normal saline (NS) groups. Pharmacokinetic studies indicated that the superior antitumor efficacy of GA-P2 was attributed not only to tissue targeting but also to low clearance, extended retention, high bioavailability in plasma, and increased GA stability.

Gambogic acid-loaded electrosprayed particles for site-specific treatment of hepatocellular carcinoma.

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Efficient Targeting Drug Delivery System for Lewis Lung Carcinoma, Leading to Histomorphological Abnormalities Restoration, Physiological and Psychological Statuses Improvement, and Metastasis Inhibition.

Gambogic acid-loaded electrosprayed particles for site-specific treatment of hepatocellular carcinoma.