gambogic acid/hypoxia

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Hypoxia-induced resistance to cisplatin-mediated apoptosis in osteosarcoma cells is reversed by gambogic acid independently of HIF-1α.

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In vitro evidence of hypoxia-induced resistance to cisplatin (CDDP)-mediated apoptosis exists in human osteosarcoma (OS). Gambogic acid (GA) is a promising chemotherapeutic compound that could increase the chemotherapeutic effectiveness of CDDP in human OS cells by inducing cell cycle arrest and

Gambogic acid moderates cardiac responses to chronic hypoxia likely by acting on the proteasome and NF-κB pathway.

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Gambogic acid (GA) is the principal active ingredient of gamboges. GA was reported to exert anti-tumor and anti-inflammatory effects both in vitro and in vivo. Previously, we have shown that GA is a more tissue-specific proteasome inhibitor than bortezomib and it is less toxic to peripheral white

Gambogic acid suppresses hypoxia-induced hypoxia-inducible factor-1α/vascular endothelial growth factor expression via inhibiting phosphatidylinositol 3-kinase/Akt/mammalian target protein of rapamycin pathway in multiple myeloma cells.

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In multiple myeloma (MM), the hypoxic environment is an important factor causing tumor angiogenesis, which is strongly correlated to disease progression and unfavorable outcome by activating the key transcription factor, hypoxia-inducible factor-1α (HIF-1α). Gambogic acid (GA) is the major active

Specific-oxygen-supply functionalized core-shell nanoparticles for smart mutual-promotion between photodynamic therapy and gambogic acid-induced chemotherapy

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Photodynamic therapy (PDT) and chemotherapy of cancer both meet respective challenges. Tumor hypoxia, low penetration and high glutathione (GSH) level bear the brunt. Herein, a core-shell nanoparticle, with multi-function of hypoxia-responsiveness, specific oxygen supply and deep tumor penetration,

Gambogic acid suppresses inflammation in rheumatoid arthritis rats via PI3K/Akt/mTOR signaling pathway.

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Gamboge is the dried resin secreted by the Garcinia maingayi gambogic tree and is a substance that may be used to treat a variety of diseases, exhibits anti‑tumor and detoxification effects and prevents bleeding. The primary active constituent is gambogic acid. The present study aimed to investigate

The natural compound gambogic acid radiosensitizes nasopharyngeal carcinoma cells under hypoxic conditions.

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OBJECTIVE Hypoxia is an important factor that causes decreased local disease control as well as increased distant metastases and resistance to radiotherapy in patients with advanced nasopharyngeal carcinoma (NPC). Gambogic acid (GA), the major active ingredient of gamboge, exerts antitumor effects

Gambogic acid inhibits angiogenesis through inhibiting PHD2-VHL-HIF-1α pathway.

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Our previous studies revealed that gambogic acid (GA), the major active ingredient of gamboge, possessed antiangiogenic activities. In this study, we further explored the mechanism of inhibition effects of GA in tumor angiogenesis. The results of luciferase, RT-PCR, and ELISA assays indicated that

Multifunctional Polymeric Nanosystems for Dual-Targeted Combinatorial Chemo/Angiogenesis Therapy of Tumors.

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Combination of antiangiogenesis and chemotherapy holds vast promise for effective inhibition of tumor proliferation and invasion. Herein, a multifunctional self-assembled nanosystem consisting of amphiphilic c(RGDyK)-functionalized low-molecular-weight heparin-gambogic acid conjugate (cRHG) is

A novel "mosaic-type" nanoparticle for selective drug release targeting hypoxic cancer cells.

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The surface potential of particles is a double-edged sword for nanomedicine. The negative charge can protect nanoparticles from clearance before they reach the tumor tissue; however, it is difficult to phagocytose the negative particles by target cells due to the negative potential of the

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