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Lapachone AND anemia

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https://www.readbyqxmd.com/read/26803578/novel-naphtho-2-1-d-oxazole-4-5-diones-as-nqo1-substrates-with-improved-aqueous-solubility-design-synthesis-and-in-vivo-antitumor-evaluation
#1
Xiang Li, Jinlei Bian, Nan Wang, Xue Qian, Jing Gu, Tong Mu, Jun Fan, Xiuwen Yang, Shangzhen Li, Tingting Yang, Haopeng Sun, Qidong You, Xiaojin Zhang
A new series of ortho-naphthoquinone analogs of β-lapachone were designed, synthesized and evaluated. The biological results indicated that most of our compounds were efficient substrates for NQO1. The new scaffold with water-soluble side chain resulted in greater solubility under acidic condition compared to β-lapachone. Thus avoiding the use of hydroxylpropyl β-cyclodextrin which would finally cause the rapid drug clearance from the blood and dose-limiting toxicity in the form of hemolytic anemia. The most soluble and promising compound in this series was 2-((4-benzylpiperazin-1-yl)methyl)naphtho[2,1-d]oxazole-4,5-dione (3k), which inhibited cancer cell (NQO1-rich A549 cell line) growth at IC50 values of 4...
March 1, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/25542645/esterase-activatable-%C3%AE-lapachone-prodrug-micelles-for-nqo1-targeted-lung-cancer-therapy
#2
Xinpeng Ma, Xiumei Huang, Zachary Moore, Gang Huang, Jessica A Kilgore, Yiguang Wang, Suntrea Hammer, Noelle S Williams, David A Boothman, Jinming Gao
UNLABELLED: Lung cancer is one of the most lethal forms of cancer and current chemotherapeutic strategies lack broad specificity and efficacy. Recently, β-lapachone (β-lap) was shown to be highly efficacious in killing non-small cell lung cancer (NSCLC) cells regardless of their p53, cell cycle and caspase status. Pre-clinical and clinical use of β-lap (clinical form, ARQ501 or 761) is hampered by poor pharmacokinetics and toxicity due to hemolytic anemia. Here, we report the development and preclinical evaluation of β-lap prodrug nanotherapeutics consisting of diester derivatives of β-lap encapsulated in biocompatible and biodegradable poly(ethylene glycol)-b-poly(D,L-lactic acid) (PEG-b-PLA) micelles...
February 28, 2015: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/21224367/modulating-endogenous-nqo1-levels-identifies-key-regulatory-mechanisms-of-action-of-%C3%AE-lapachone-for-pancreatic-cancer-therapy
#3
Long Shan Li, Erik A Bey, Ying Dong, Jieru Meng, Biswanath Patra, Jingsheng Yan, Xian-Jin Xie, Rolf A Brekken, Carlton C Barnett, William G Bornmann, Jinming Gao, David A Boothman
PURPOSE: Pancreatic cancer is the fourth leading cause of cancer-related deaths, in which the 5-year survival rate is less than 5%. Current standard of care therapies offer little selectivity and high toxicity. Novel, tumor-selective approaches are desperately needed. Although prior work suggested that β-lapachone (β-lap) could be used for the treatment of pancreatic cancers, the lack of knowledge of the compound's mechanism of action prevented optimal use of this agent. EXPERIMENTAL DESIGN: We examined the role of NAD(P)H:quinone oxidoreductase-1 (NQO1) in β-lap-mediated antitumor activity, using a series of MIA PaCa-2 pancreatic cancer clones varying in NQO1 levels by stable shRNA knockdown...
January 15, 2011: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/20164298/a-naphthoquinone-derivative-can-induce-anemia-through-phosphatidylserine-exposure-mediated-erythrophagocytosis
#4
Ji-Yoon Noh, Jong-Sook Park, Kyung-Min Lim, Keunyoung Kim, Ok-Nam Bae, Seung-Min Chung, Sue Shin, Jin-Ho Chung
A naphthoquinone derivative, beta-lapachone (betaL; 3,4-dihydro-2,2-dimethyl-2H-naphthol[1,2-b]pyran-5,6-dione), is receiving huge attention for its potent therapeutic effects against various diseases. However, during the preclinical safety evaluation, repeated oral treatment of betaL in rats induced anemia, i.e., a significantly decreased erythrocyte count. In this study, in an effort to elucidate the mechanism underlying the betaL-induced anemia, we investigated the effects of betaL on erythrocytes with freshly isolated human erythrocytes in vitro and rat in vivo...
May 2010: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/19380173/malignant-pleural-mesothelioma-genome-wide-expression-patterns-reflecting-general-resistance-mechanisms-and-a-proposal-of-novel-targets
#5
Oluf Dimitri Røe, Endre Anderssen, Helmut Sandeck, Tone Christensen, Erik Larsson, Steinar Lundgren
Malignant pleural mesothelioma is an asbestos-related multi-resistant tumour with increasing incidence worldwide. Well-characterized snap-frozen normal parietal, visceral pleura and mesothelioma samples were analysed with Affymetrix Human Genome U133 Plus 2.0 GeneChip oligoarray of 38500 genes. We discovered a close relation between gene profile and resistance towards topoisomerase poisons, alkylating agents, antitubulines, antifolates, platinum compounds and radiation therapy. Target genes of chemo- (e.g. TOP2A, BIRC5/Survivin and proteasome) and radiotherapy (e...
January 2010: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
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