901
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Zhao P, Zheng M, Luo Z, Fan X, Sheng Z, Gong P, Chen Z, Zhang B, Ni D, Ma Y, Cai L. Oxygen Nanocarrier for Combined Cancer Therapy: Oxygen-Boosted ATP-Responsive Chemotherapy with Amplified ROS Lethality. Adv Healthc Mater 2016; 5:2161-7. [PMID: 27253453 DOI: 10.1002/adhm.201600121] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/29/2016] [Indexed: 12/19/2022]
Abstract
Oxygen nanocarrier (A/D-ONC) with a polymeric core entrapping hemoglobin and a cationic lipid shell absorbing a DOX-intercalating DNA duplex is developed. After endocytosis oxygenated A/D-ONC donates O2 to cancer cells that acts therapeutically by: (1) increasing intracellular ATP content that promotes DOX release, thereby converting ATP to the trigger of detrimental chemotherapy; (2) by synchronously increasing the ROS amount to amplify the lethality to cancer cells.
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Affiliation(s)
- Pengfei Zhao
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Mingbin Zheng
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- Guangdong Key Laboratory for Research and Development of Natural Drugs; Guangdong Medical University; Dongguan 523808 P. R. China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 P. R. China
| | - Zhenyu Luo
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Xiujun Fan
- Research Laboratory for Reproductive Health; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Zonghai Sheng
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Ping Gong
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Ze Chen
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Baozhen Zhang
- Research Laboratory for Reproductive Health; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Dapeng Ni
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Yifan Ma
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Lintao Cai
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
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902
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Lehuédé C, Dupuy F, Rabinovitch R, Jones RG, Siegel PM. Metabolic Plasticity as a Determinant of Tumor Growth and Metastasis. Cancer Res 2016; 76:5201-8. [DOI: 10.1158/0008-5472.can-16-0266] [Citation(s) in RCA: 180] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/21/2016] [Indexed: 12/11/2022]
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903
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Affiliation(s)
- Boyun Kim
- Cancer Research Institute, College of Medicine, Seoul National University, Seoul, Korea
- Nano System Institute, Seoul National University, Seoul, Korea
| | - Yong Sang Song
- Cancer Research Institute, College of Medicine, Seoul National University, Seoul, Korea
- WCU Biomodulation, Department of Agricultural Biotechnology, Seoul National University, Seoul, Korea
- Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea
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904
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Cao JJ, Tan CP, Chen MH, Wu N, Yao DY, Liu XG, Ji LN, Mao ZW. Targeting cancer cell metabolism with mitochondria-immobilized phosphorescent cyclometalated iridium(iii) complexes. Chem Sci 2016; 8:631-640. [PMID: 29780446 PMCID: PMC5933427 DOI: 10.1039/c6sc02901a] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/22/2016] [Indexed: 12/27/2022] Open
Abstract
We report a rational design and mechanism studies of mitochondria-immobilized iridium(iii) complexes that can kill cancer cells by targeting mitochondrial metabolism.
Cancer cell metabolism is reprogrammed to sustain the high metabolic demands of cell proliferation. Recently, emerging studies have shown that mitochondrial metabolism is a potential target for cancer therapy. Herein, four mitochondria-targeted phosphorescent cyclometalated iridium(iii) complexes have been designed and synthesized. Complexes 2 and 4, containing reactive chloromethyl groups for mitochondrial fixation, show much higher cytotoxicity than complexes 1 and 3 without mitochondria-immobilization properties against the cancer cells screened. Further studies show that complexes 2 and 4 induce caspase-dependent apoptosis through mitochondrial damage, cellular ATP depletion, mitochondrial respiration inhibition and reactive oxygen species (ROS) elevation. The phosphorescence of complexes 2 and 4 can be utilized to monitor the perinuclear clustering of mitochondria in real time, which provides a reliable and convenient method for in situ monitoring of the therapeutic effect and gives hints for the investigation of anticancer mechanisms. Genome-wide transcriptional analysis shows that complex 2 exerts its anticancer activity through metabolism repression and multiple cell death signalling pathways. Our work provides a strategy for the construction of highly effective anticancer agents targeting mitochondrial metabolism through rational modification of phosphorescent iridium complexes.
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Affiliation(s)
- Jian-Jun Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , P. R. China . ;
| | - Cai-Ping Tan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , P. R. China . ;
| | - Mu-He Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , P. R. China . ;
| | - Na Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , P. R. China . ;
| | - De-Yang Yao
- Key Laboratory of Regenerative Biology , Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine , South China Institute for Stem Cell Biology and Regenerative Medicine , Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , Guangzhou , People's Republic of China
| | - Xing-Guo Liu
- Key Laboratory of Regenerative Biology , Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine , South China Institute for Stem Cell Biology and Regenerative Medicine , Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , Guangzhou , People's Republic of China
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , P. R. China . ;
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , P. R. China . ;
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905
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Zhong J, Zhu X, Luo K, Li L, Tang M, Liu Y, Zhou Z, Huang Y. Direct Cytoplasmic Delivery and Nuclear Targeting Delivery of HPMA-MT Conjugates in a Microtubules Dependent Fashion. Mol Pharm 2016; 13:3069-79. [PMID: 27417390 DOI: 10.1021/acs.molpharmaceut.6b00181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As the hearts of tumor cells, the nucleus is the ultimate target of many chemotherapeutic agents and genes. However, nuclear drug delivery is always hampered by multiple intracellular obstacles, such as low efficiency of lysosome escape and insufficient nuclear trafficking. Herein, an N-(2-hydroxypropyl) methacrylamide (HPMA) polymer-based drug delivery system was designed, which could achieve direct cytoplasmic delivery by a nonendocytic pathway and transport into the nucleus in a microtubules dependent fashion. A special targeting peptide (MT), derived from an endogenic parathyroid hormone-related protein, was conjugated to the polymer backbone, which could accumulate into the nucleus a by microtubule-mediated pathway. The in vitro studies found that low temperature and NaN3 could not influence the cell internalization of the conjugates. Besides, no obvious overlay of the conjugates with lysosome demonstrated that the polymer conjugates could enter the tumor cell cytoplasm by a nonendocytic pathway, thus avoiding the drug degradation in the lysosome. Furthermore, after suppression of the microtubule dynamics with microtubule stabilizing docetaxel (DTX) and destabilizing nocodazole (Noc), the nuclear accumulation of polymeric conjugates was significantly inhibited. Living cells fluorescence recovery after photobleaching study found that the nuclear import rate of conjugates was 2-fold faster compared with the DTX and Noc treated groups. These results demonstrated that the conjugates transported into the nucleus in a microtubules dependent way. Therefore, in addition to direct cytoplasmic delivery, our peptide conjugated polymeric platform could simultaneously mediate nuclear drug accumulation, which may open a new path for further intracellular genes/peptides delivery.
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Affiliation(s)
- Jiaju Zhong
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
| | - Xi Zhu
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Sichuan University , Chengdu 610041, China
| | - Lian Li
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
| | - Manlin Tang
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
| | - Yanxi Liu
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
| | - Zhou Zhou
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
| | - Yuan Huang
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministery of Education), West China School of Pharmacy, Sichuan University , NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
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906
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Targeting FLT3-ITD signaling mediates ceramide-dependent mitophagy and attenuates drug resistance in AML. Blood 2016; 128:1944-1958. [PMID: 27540013 DOI: 10.1182/blood-2016-04-708750] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 08/09/2016] [Indexed: 11/20/2022] Open
Abstract
Signaling pathways regulated by mutant Fms-like tyrosine kinase 3 (FLT3)-internal tandem duplication (ITD), which mediate resistance to acute myeloid leukemia (AML) cell death, are poorly understood. Here, we reveal that pro-cell death lipid ceramide generation is suppressed by FLT3-ITD signaling. Molecular or pharmacologic inhibition of FLT3-ITD reactivated ceramide synthesis, selectively inducing mitophagy and AML cell death. Mechanistically, FLT3-ITD targeting induced ceramide accumulation on the outer mitochondrial membrane, which then directly bound autophagy-inducing light chain 3 (LC3), involving its I35 and F52 residues, to recruit autophagosomes for execution of lethal mitophagy. Short hairpin RNA (shRNA)-mediated knockdown of LC3 prevented AML cell death in response to FLT3-ITD inhibition by crenolanib, which was restored by wild-type (WT)-LC3, but not mutants of LC3 with altered ceramide binding (I35A-LC3 or F52A-LC3). Mitochondrial ceramide accumulation and lethal mitophagy induction in response to FLT3-ITD targeting was mediated by dynamin-related protein 1 (Drp1) activation via inhibition of protein kinase A-regulated S637 phosphorylation, resulting in mitochondrial fission. Inhibition of Drp1 prevented ceramide-dependent lethal mitophagy, and reconstitution of WT-Drp1 or phospho-null S637A-Drp1 but not its inactive phospho-mimic mutant (S637D-Drp1), restored mitochondrial fission and mitophagy in response to crenolanib in FLT3-ITD+ AML cells expressing stable shRNA against endogenous Drp1. Moreover, activating FLT3-ITD signaling in crenolanib-resistant AML cells suppressed ceramide-dependent mitophagy and prevented cell death. FLT3-ITD+ AML drug resistance is attenuated by LCL-461, a mitochondria-targeted ceramide analog drug, in vivo, which also induced lethal mitophagy in human AML blasts with clinically relevant FLT3 mutations. Thus, these data reveal a novel mechanism which regulates AML cell death by ceramide-dependent mitophagy in response to FLT3-ITD targeting.
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907
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Li YH, Xu JY, Tao L, Li XF, Li S, Zeng X, Chen SY, Zhang P, Qin C, Zhang C, Chen Z, Zhu F, Chen YZ. SVM-Prot 2016: A Web-Server for Machine Learning Prediction of Protein Functional Families from Sequence Irrespective of Similarity. PLoS One 2016; 11:e0155290. [PMID: 27525735 PMCID: PMC4985167 DOI: 10.1371/journal.pone.0155290] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 04/27/2016] [Indexed: 12/20/2022] Open
Abstract
Knowledge of protein function is important for biological, medical and therapeutic studies, but many proteins are still unknown in function. There is a need for more improved functional prediction methods. Our SVM-Prot web-server employed a machine learning method for predicting protein functional families from protein sequences irrespective of similarity, which complemented those similarity-based and other methods in predicting diverse classes of proteins including the distantly-related proteins and homologous proteins of different functions. Since its publication in 2003, we made major improvements to SVM-Prot with (1) expanded coverage from 54 to 192 functional families, (2) more diverse protein descriptors protein representation, (3) improved predictive performances due to the use of more enriched training datasets and more variety of protein descriptors, (4) newly integrated BLAST analysis option for assessing proteins in the SVM-Prot predicted functional families that were similar in sequence to a query protein, and (5) newly added batch submission option for supporting the classification of multiple proteins. Moreover, 2 more machine learning approaches, K nearest neighbor and probabilistic neural networks, were added for facilitating collective assessment of protein functions by multiple methods. SVM-Prot can be accessed at http://bidd2.nus.edu.sg/cgi-bin/svmprot/svmprot.cgi.
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Affiliation(s)
- Ying Hong Li
- Innovative Drug Research and Bioinformatics Group, Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Jing Yu Xu
- Innovative Drug Research and Bioinformatics Group, Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
- School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, China
| | - Lin Tao
- Innovative Drug Research and Bioinformatics Group, Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
| | - Xiao Feng Li
- Innovative Drug Research and Bioinformatics Group, Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Shuang Li
- Innovative Drug Research and Bioinformatics Group, Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Xian Zeng
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
| | - Shang Ying Chen
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
| | - Peng Zhang
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
| | - Chu Qin
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
| | - Cheng Zhang
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
| | - Zhe Chen
- Zhejiang Key Laboratory of Gastro-intestinal Pathophysiology, Zhejiang Hospital of Traditional Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, P. R. China
| | - Feng Zhu
- Innovative Drug Research and Bioinformatics Group, Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Yu Zong Chen
- Bioinformatics and Drug Discovery group, Department of Pharmacy, National University of Singapore, Singapore, 117543, Singapore
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908
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Shin JJ, Aftab Q, Austin P, McQueen JA, Poon T, Li SC, Young BP, Roskelley CD, Loewen CJR. Systematic identification of genes involved in metabolic acid stress resistance in yeast and their potential as cancer targets. Dis Model Mech 2016; 9:1039-49. [PMID: 27519690 PMCID: PMC5047693 DOI: 10.1242/dmm.023374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 07/18/2016] [Indexed: 12/12/2022] Open
Abstract
A hallmark of all primary and metastatic tumours is their high rate of glucose uptake and glycolysis. A consequence of the glycolytic phenotype is the accumulation of metabolic acid; hence, tumour cells experience considerable intracellular acid stress. To compensate, tumour cells upregulate acid pumps, which expel the metabolic acid into the surrounding tumour environment, resulting in alkalization of intracellular pH and acidification of the tumour microenvironment. Nevertheless, we have only a limited understanding of the consequences of altered intracellular pH on cell physiology, or of the genes and pathways that respond to metabolic acid stress. We have used yeast as a genetic model for metabolic acid stress with the rationale that the metabolic changes that occur in cancer that lead to intracellular acid stress are likely fundamental. Using a quantitative systems biology approach we identified 129 genes required for optimal growth under conditions of metabolic acid stress. We identified six highly conserved protein complexes with functions related to oxidative phosphorylation (mitochondrial respiratory chain complex III and IV), mitochondrial tRNA biosynthesis [glutamyl-tRNA(Gln) amidotransferase complex], histone methylation (Set1C-COMPASS), lysosome biogenesis (AP-3 adapter complex), and mRNA processing and P-body formation (PAN complex). We tested roles for two of these, AP-3 adapter complex and PAN deadenylase complex, in resistance to acid stress using a myeloid leukaemia-derived human cell line that we determined to be acid stress resistant. Loss of either complex inhibited growth of Hap1 cells at neutral pH and caused sensitivity to acid stress, indicating that AP-3 and PAN complexes are promising new targets in the treatment of cancer. Additionally, our data suggests that tumours may be genetically sensitized to acid stress and hence susceptible to acid stress-directed therapies, as many tumours accumulate mutations in mitochondrial respiratory chain complexes required for their proliferation.
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Affiliation(s)
- John J Shin
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Qurratulain Aftab
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Pamela Austin
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Jennifer A McQueen
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Tak Poon
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Shu Chen Li
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Barry P Young
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Calvin D Roskelley
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Christopher J R Loewen
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
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909
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Liu VM, Vander Heiden MG. The Role of Pyruvate Kinase M2 in Cancer Metabolism. Brain Pathol 2016; 25:781-3. [PMID: 26526946 DOI: 10.1111/bpa.12311] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 08/25/2015] [Indexed: 12/13/2022] Open
Abstract
The M2 isoform of pyruvate kinase is expressed preferentially in cancer cells over other pyruvate kinase isoforms. PKM2 is unique in its ability to be regulated allosterically by nutrients and growth signaling pathways, allowing cells to adapt their metabolic program to match physiological needs in different environments. Here, we discuss the role of pyruvate kinase M2 in glioma and in cancer metabolism.
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Affiliation(s)
- Vivian M Liu
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA.,Harvard-MIT Health Sciences and Technology Division, Harvard Medical School, Boston, MA
| | - Matthew G Vander Heiden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
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910
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He YH, Chen XQ, Yan DJ, Xiao FH, Lin R, Liao XP, Liu YW, Pu SY, Yu Q, Sun HP, Jiang JJ, Cai WW, Kong QP. Familial longevity study reveals a significant association of mitochondrial DNA copy number between centenarians and their offspring. Neurobiol Aging 2016; 47:218.e11-218.e18. [PMID: 27600867 DOI: 10.1016/j.neurobiolaging.2016.07.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 07/19/2016] [Accepted: 07/29/2016] [Indexed: 12/29/2022]
Abstract
Reduced mitochondrial function is an important cause of aging and age-related diseases. We previously revealed a relatively higher level of mitochondrial DNA (mtDNA) content in centenarians. However, it is still unknown whether such an mtDNA content pattern of centenarians could be passed on to their offspring and how it was regulated. To address these issues, we recruited 60 longevity families consisting of 206 family members (cohort 1) and explored their mtDNA copy number. The results showed that the first generation of the offspring (F1 offspring) had a higher level of mtDNA copy number than their spouses (p < 0.05) independent of a gender effect. In addition, we found a positive association of mtDNA copy number in centenarians with that in F1 offspring (r = 0.54, p = 0.0008) but not with that in F1 spouses. These results were replicated in another independent cohort consisting of 153 subjects (cohort 2). RNA sequencing analysis suggests that the single-stranded DNA-binding protein 4 was significantly associated with mtDNA copy number and was highly expressed in centenarians as well as F1 offspring versus the F1 spouses, thus likely regulates the mtDNA copy number in the long-lived family members. In conclusion, our results suggest that the pattern of high mtDNA copy number is likely inheritable, which may act as a favorable factor to familial longevity through assuring adequate energy supply.
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Affiliation(s)
- Yong-Han He
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Xiao-Qiong Chen
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Dong-Jing Yan
- Department of Biochemistry and Molecular Biology, Hainan Medical College, Haikou, China
| | - Fu-Hui Xiao
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Rong Lin
- Department of Biology, Hainan Medical College, Haikou, China
| | - Xiao-Ping Liao
- Department of Neurology, The Affiliated Hospital of Hainan Medical College, Haikou, China
| | - Yao-Wen Liu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Shao-Yan Pu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China
| | - Qin Yu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Hong-Peng Sun
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou, China
| | - Jian-Jun Jiang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Wang-Wei Cai
- Department of Biochemistry and Molecular Biology, Hainan Medical College, Haikou, China.
| | - Qing-Peng Kong
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, China.
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911
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A NOX2/Egr-1/Fyn pathway delineates new targets for TKI-resistant malignancies. Oncotarget 2016; 6:23631-46. [PMID: 26136341 PMCID: PMC4695141 DOI: 10.18632/oncotarget.4604] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 06/12/2015] [Indexed: 12/13/2022] Open
Abstract
Tyrosine kinase inhibitors (TKI) have improved CML response rates, and some are effective against resistance-promoting point mutations in BCR-ABL1. However, in the absence of point mutations, resistance still occurs. Here, we identify a novel pathway mediating resistance which connects p47phox, the organizer subunit of NADPH oxidase-2 (NOX2), with early growth response-1 (Egr-1) and the Src family kinase Fyn. We found up-regulation of p47phox, Egr-1, and Fyn mRNA and protein using paired isogenic CML cell lines and mined data. Isolation of CD34+ cells and tissue microarray staining from blast crisis CML patients confirmed in vivo over-expression of components of this pathway. Knockdown studies revealed that p47phox modulated reactive oxygen species and Egr-1 expression, which, in turn, controlled Fyn expression. Interestingly, Fyn knockdown sensitized TKI-resistant cells to dasatinib, a dual BCR-ABL1/Src inhibitor. Egr-1 knockdown had similar effects, indicating the utility of targeting Fyn expression over activation. Pointedly, p47phox knockdown also restored TKI-sensitivity, indicating that targeting the NOX2 complex can overcome resistance. The NOX2/Egr-1/Fyn pathway was also conserved within TKI-resistant EGFRΔIII-expressing glioblastoma and patient-derived glioblastoma stem cells. Thus, our findings suggest that targeting the NOX2/Egr-1/Fyn pathway may have clinical implications within multiple cancer types; particularly where efficacy of TKI is compromised.
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912
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Izreig S, Samborska B, Johnson R, Sergushichev A, Ma E, Lussier C, Loginicheva E, Donayo A, Poffenberger M, Sagan S, Vincent E, Artyomov M, Duchaine T, Jones R. The miR-17 ∼ 92 microRNA Cluster Is a Global Regulator of Tumor Metabolism. Cell Rep 2016; 16:1915-28. [DOI: 10.1016/j.celrep.2016.07.036] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 06/02/2016] [Accepted: 07/14/2016] [Indexed: 02/07/2023] Open
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913
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Ma X, Gong N, Zhong L, Sun J, Liang XJ. Future of nanotherapeutics: Targeting the cellular sub-organelles. Biomaterials 2016; 97:10-21. [DOI: 10.1016/j.biomaterials.2016.04.026] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/02/2016] [Accepted: 04/20/2016] [Indexed: 11/25/2022]
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914
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Lysine acetylation in mitochondria: From inventory to function. Mitochondrion 2016; 33:58-71. [PMID: 27476757 DOI: 10.1016/j.mito.2016.07.012] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 07/25/2016] [Accepted: 07/26/2016] [Indexed: 12/12/2022]
Abstract
Cellular signaling pathways are regulated in a highly dynamic fashion in order to quickly adapt to distinct environmental conditions. Acetylation of lysine residues represents a central process that orchestrates cellular metabolism and signaling. In mitochondria, acetylation seems to be the most prevalent post-translational modification, presumably linked to the compartmentation and high turnover of acetyl-CoA in this organelle. Similarly, the elevated pH and the higher concentration of metabolites in mitochondria seem to favor non-enzymatic lysine modifications, as well as other acylations. Hence, elucidating the mechanisms for metabolic control of protein acetylation is crucial for our understanding of cellular processes. Recent advances in mass spectrometry-based proteomics have considerably increased our knowledge of the regulatory scope of acetylation. Here, we review the current knowledge and functional impact of mitochondrial protein acetylation across species. We first cover the experimental approaches to identify and analyze lysine acetylation on a global scale, we then explore both commonalities and specific differences of plant and animal acetylomes and the evolutionary conservation of protein acetylation, as well as its particular impact on metabolism and diseases. Important future directions and technical challenges are discussed, and it is pointed out that the transfer of knowledge between species and diseases, both in technology and biology, is of particular importance for further advancements in this field.
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915
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Vong LB, Kobayashi M, Nagasaki Y. Evaluation of the Toxicity and Antioxidant Activity of Redox Nanoparticles in Zebrafish (Danio rerio) Embryos. Mol Pharm 2016; 13:3091-7. [DOI: 10.1021/acs.molpharmaceut.6b00225] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Long Binh Vong
- Department
of Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573, Japan
| | - Makoto Kobayashi
- Department
of Molecular and Developmental Biology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan
| | - Yukio Nagasaki
- Department
of Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573, Japan
- Master’s
School of Medical Sciences, Graduate School of Comprehensive Human
Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8575, Japan
- Satellite
Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573, Japan
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916
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Masini T, Birkaya B, van Dijk S, Mondal M, Hekelaar J, Jäger M, Terwisscha van Scheltinga AC, Patel MS, Hirsch AKH, Moman E. Furoates and thenoates inhibit pyruvate dehydrogenase kinase 2 allosterically by binding to its pyruvate regulatory site. J Enzyme Inhib Med Chem 2016; 31:170-175. [PMID: 27435185 PMCID: PMC5553292 DOI: 10.1080/14756366.2016.1201812] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 06/07/2016] [Indexed: 10/21/2022] Open
Abstract
The last decade has witnessed the reawakening of cancer metabolism as a therapeutic target. In particular, inhibition of pyruvate dehydrogenase kinase (PDK) holds remarkable promise. Dichloroacetic acid (DCA), currently undergoing clinical trials, is a unique PDK inhibitor in which it binds to the allosteric pyruvate site of the enzyme. However, the safety of DCA as a drug is compromised by its neurotoxicity, whereas its usefulness as an investigative tool is limited by the high concentrations required to exert observable effects in cell culture. Herein, we report the identification - by making use of saturation-transfer difference NMR spectroscopy, enzymatic assays and computational methods - of furoate and thenoate derivatives as allosteric pyruvate-site-binding PDK2 inhibitors. This work substantiates the pyruvate regulatory pocket as a druggable target.
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Affiliation(s)
- Tiziana Masini
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Barbara Birkaya
- Department of Biochemistry, School of Medicine and Biomedical Sciences, University at Buffalo, The State University of New York, Buffalo, NY, USA 14214
| | - Simon van Dijk
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Milon Mondal
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Johan Hekelaar
- Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Manuel Jäger
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Anke C. Terwisscha van Scheltinga
- Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Mulchand S. Patel
- Department of Biochemistry, School of Medicine and Biomedical Sciences, University at Buffalo, The State University of New York, Buffalo, NY, USA 14214
| | - Anna K. H. Hirsch
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG Groningen, The Netherlands
| | - Edelmiro Moman
- Molecular Design Group, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
- RCSI Molecular Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland
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917
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Metabonomics applied in exploring the antitumour mechanism of physapubenolide on hepatocellular carcinoma cells by targeting glycolysis through the Akt-p53 pathway. Sci Rep 2016; 6:29926. [PMID: 27416811 PMCID: PMC4945937 DOI: 10.1038/srep29926] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 06/24/2016] [Indexed: 12/15/2022] Open
Abstract
Metabolomics can be used to identify potential markers and discover new targets for future therapeutic interventions. Here, we developed a novel application of the metabonomics method based on gas chromatography-mass spectrometry (GC/MS) analysis and principal component analysis (PCA) for rapidly exploring the anticancer mechanism of physapubenolide (PB), a cytotoxic withanolide isolated from Physalis species. PB inhibited the proliferation of hepatocellular carcinoma cells in vitro and in vivo, accompanied by apoptosis-related biochemical events, including the cleavage of caspase-3/7/9 and PARP. Metabolic profiling analysis revealed that PB disturbed the metabolic pattern and significantly decreased lactate production. This suggests that the suppression of glycolysis plays an important role in the anti-tumour effects induced by PB, which is further supported by the decreased expression of glycolysis-related genes and proteins. Furthermore, the increased level of p53 and decreased expression of p-Akt were observed, and the attenuated glycolysis and enhanced apoptosis were reversed in the presence of Akt cDNA or p53 siRNA. These results confirm that PB exhibits anti-cancer activities through the Akt-p53 pathway. Our study not only reports for the first time the anti-tumour mechanism of PB, but also suggests that PB is a promising therapeutic agent for use in cancer treatments and that metabolomic approaches provide a new strategy to effectively explore the molecular mechanisms of promising anticancer compounds.
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918
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Cunniff B, McKenzie AJ, Heintz NH, Howe AK. AMPK activity regulates trafficking of mitochondria to the leading edge during cell migration and matrix invasion. Mol Biol Cell 2016; 27:2662-74. [PMID: 27385336 PMCID: PMC5007087 DOI: 10.1091/mbc.e16-05-0286] [Citation(s) in RCA: 152] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 06/26/2016] [Indexed: 01/06/2023] Open
Abstract
Mitochondria infiltrate leading edge lamellipodia, increasing local mitochondrial mass and relative ATP concentration. AMPK regulates infiltration of mitochondria into the leading edge of 2D lamellipodia and 3D invadopodia, coupling local metabolic sensing to subcellular targeting of mitochondria during cell movement. Cell migration is a complex behavior involving many energy-expensive biochemical events that iteratively alter cell shape and location. Mitochondria, the principal producers of cellular ATP, are dynamic organelles that fuse, divide, and relocate to respond to cellular metabolic demands. Using ovarian cancer cells as a model, we show that mitochondria actively infiltrate leading edge lamellipodia, thereby increasing local mitochondrial mass and relative ATP concentration and supporting a localized reversal of the Warburg shift toward aerobic glycolysis. This correlates with increased pseudopodial activity of the AMP-activated protein kinase (AMPK), a critically important cellular energy sensor and metabolic regulator. Furthermore, localized pharmacological activation of AMPK increases leading edge mitochondrial flux, ATP content, and cytoskeletal dynamics, whereas optogenetic inhibition of AMPK halts mitochondrial trafficking during both migration and the invasion of three-dimensional extracellular matrix. These observations indicate that AMPK couples local energy demands to subcellular targeting of mitochondria during cell migration and invasion.
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Affiliation(s)
- Brian Cunniff
- Department of Pathology, University of Vermont, Burlington, VT 05405 University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405
| | - Andrew J McKenzie
- University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405 Department of Pharmacology, University of Vermont, Burlington, VT 05405
| | - Nicholas H Heintz
- Department of Pathology, University of Vermont, Burlington, VT 05405 University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405
| | - Alan K Howe
- University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405 Department of Pharmacology, University of Vermont, Burlington, VT 05405
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919
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Zhang W, Zhu M, Wang F, Cao D, Ruan JJ, Su W, Ruan BH. Mono-sulfonated tetrazolium salt based NAD(P)H detection reagents suitable for dehydrogenase and real-time cell viability assays. Anal Biochem 2016; 509:33-40. [PMID: 27387057 DOI: 10.1016/j.ab.2016.06.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 06/21/2016] [Accepted: 06/27/2016] [Indexed: 02/02/2023]
Abstract
Glutamate dehydrogenase (GDH) catalyzes the oxidative deamination of L-glutamate and is important for several biological processes. For GDH inhibitor screening, we developed a novel mono-sulfonated tetrazolium salt (EZMTT), which can be synthesized using H2O2 oxidation and purified easily on silica gel in large quantities. The EZMTT detection method showed linear dose responses to NAD(P)H, dehydrogenase concentration and cell numbers. In E. coli GDH assay, the EZMTT method showed excellent assay reproducibility with a Z factor of 0.9 and caused no false positives in the presence of antioxidants (such as BME). Using the EZMTT-formazan-NAD(P)H system, we showed that EGCG is a potent E. coli GDH inhibitor (IC50 45 nM) and identified that Ebselen, a multifunctional thioredoxin reductase inhibitor, inactivated E. coli GDH (IC50 213 nM). In cell-based assays at 0.5 mM tetrazolium concentration, EZMTT showed essentially no toxicity after a 3-day incubation, whereas 40% of inhibition was observed for WST-8. In conclusion, EZMTT is a novel tetrazolium salt which provides improved features that are suitable for dehydrogenases and real-time cell-based high-throughput screening (HTS).
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Affiliation(s)
- Wei Zhang
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtza River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China; Department of Urology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Min Zhu
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtza River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Feng Wang
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtza River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Danhui Cao
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtza River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | | | - Weike Su
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtza River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Benfang Helen Ruan
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtza River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China.
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920
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Yang Y, Karakhanova S, Hartwig W, D'Haese JG, Philippov PP, Werner J, Bazhin AV. Mitochondria and Mitochondrial ROS in Cancer: Novel Targets for Anticancer Therapy. J Cell Physiol 2016; 231:2570-81. [PMID: 26895995 DOI: 10.1002/jcp.25349] [Citation(s) in RCA: 376] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 02/16/2016] [Indexed: 12/11/2022]
Abstract
Mitochondria are indispensable for energy metabolism, apoptosis regulation, and cell signaling. Mitochondria in malignant cells differ structurally and functionally from those in normal cells and participate actively in metabolic reprogramming. Mitochondria in cancer cells are characterized by reactive oxygen species (ROS) overproduction, which promotes cancer development by inducing genomic instability, modifying gene expression, and participating in signaling pathways. Mitochondrial and nuclear DNA mutations caused by oxidative damage that impair the oxidative phosphorylation process will result in further mitochondrial ROS production, completing the "vicious cycle" between mitochondria, ROS, genomic instability, and cancer development. The multiple essential roles of mitochondria have been utilized for designing novel mitochondria-targeted anticancer agents. Selective drug delivery to mitochondria helps to increase specificity and reduce toxicity of these agents. In order to reduce mitochondrial ROS production, mitochondria-targeted antioxidants can specifically accumulate in mitochondria by affiliating to a lipophilic penetrating cation and prevent mitochondria from oxidative damage. In consistence with the oncogenic role of ROS, mitochondria-targeted antioxidants are found to be effective in cancer prevention and anticancer therapy. A better understanding of the role played by mitochondria in cancer development will help to reveal more therapeutic targets, and will help to increase the activity and selectivity of mitochondria-targeted anticancer drugs. In this review we summarized the impact of mitochondria on cancer and gave summary about the possibilities to target mitochondria for anticancer therapies. J. Cell. Physiol. 231: 2570-2581, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Yuhui Yang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of General Surgery, University of Heidelberg, Heidelberg, Germany
| | | | - Werner Hartwig
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Jan G D'Haese
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Pavel P Philippov
- Department of Cell Signalling, Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow, Russia
| | - Jens Werner
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Alexandr V Bazhin
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University, Munich, Germany
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921
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Mallick A, More P, Syed MMK, Basu S. Nanoparticle-Mediated Mitochondrial Damage Induces Apoptosis in Cancer. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13218-13231. [PMID: 27160664 DOI: 10.1021/acsami.6b00263] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Detouring of conventional DNA damaging anticancer drugs into mitochondria to damage mitochondrial DNA is evolving as a promising strategy in chemotherapy. Inhibiting single target in mitochondria would eventually lead to the emergence of drug resistance. Moreover, targeting mitochondria selectively in cancer cells, keeping them intact in healthy cells, remains a major challenge. Herein, triphenylphosphine (TPP)-coated positively charged 131.6 nm spherical nanoparticles (NPs) comprised of α-tocopheryl succinate (TOS, inhibitor of complex II in electron transport chain) and obatoclax (Obt, inhibitor of Bcl-2) were engineered. The TOS-TPP-Obt-NPs entered into acidic lysosomes via macropinocytosis, followed by lysosomal escape and finally homed into mitochondria over a period of 24 h. Subsequently, these TOS-TPP-Obt-NPs triggered mitochondrial outer membrane permeabilization (MOMP) by inhibiting antiapoptotic Bcl-2, leading to Cytochrome C release. These TOS-TPP-Obt-NPs mediated mitochondrial damage induced cellular apoptosis through caspase-9 and caspase-3 cleavage to show improved efficacy in HeLa cells. Moreover, TOS-TPP-Obt-NPs induced MOMP in drug-resistant triple negative breast cancer cells (MDA-MB-231), leading to remarkable efficacy, compared to the combination of free drugs in higher drug concentrations. Results presented here clearly stimulate the usage of multiple drugs to perturb simultaneously diverse targets, selectively in mitochondria, as next-generation cancer therapeutics.
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Affiliation(s)
- Abhik Mallick
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune , Pune, 411008, Maharashtra, India
| | - Piyush More
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune , Pune, 411008, Maharashtra, India
| | - Muhammed Muazzam Kamil Syed
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune , Pune, 411008, Maharashtra, India
| | - Sudipta Basu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune , Pune, 411008, Maharashtra, India
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922
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Zou P, Xia Y, Ji J, Chen W, Zhang J, Chen X, Rajamanickam V, Chen G, Wang Z, Chen L, Wang Y, Yang S, Liang G. Piperlongumine as a direct TrxR1 inhibitor with suppressive activity against gastric cancer. Cancer Lett 2016; 375:114-126. [PMID: 26963494 DOI: 10.1016/j.canlet.2016.02.058] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/27/2016] [Accepted: 02/29/2016] [Indexed: 12/17/2022]
Abstract
Piperlongumine (PL), a natural alkaloid isolated from the fruit of long pepper, is known to selectively kill tumor cells while sparing their normal counterparts. However, the cellular target and potent anticancer efficacy of PL in numerous types of human cancer cells have not been fully defined. We report here that PL may interact with the thioredoxin reductase 1 (TrxR1), an important selenocysteine (Sec)-containing antioxidant enzyme, to induce reactive oxygen species (ROS)-mediated apoptosis in human gastric cancer cells. By inhibiting TrxR1 activity and increasing intracellular ROS levels, PL induces a lethal endoplasmic reticulum stress and mitochondrial dysfunction in human gastric cancer cells. Importantly, knockdown of TrxR1 sensitizes cells to PL treatment, and PL displays synergistic lethality with GSH inhibitors (BSO and Erastin) against gastric cancer cells. In vivo, PL treatment markedly reduces the TrxR1 activity and tumor cell burden. Remarkably, TrxR1 was significantly overexpressed in gastric cancer cell lines and human gastric cancer tissues. Targeting TrxR1 with PL thus discloses a previously unrecognized mechanism underlying the biological activity of PL and provides an in-depth insight into the action of PL in the treatment of gastric cancer.
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Affiliation(s)
- Peng Zou
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Yiqun Xia
- Department of Digestive Diseases, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jiansong Ji
- Department of Interventional Radiology, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang 323000, China
| | - Weiqian Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Department of Interventional Radiology, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang 323000, China
| | - Jinsan Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xi Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Vinothkumar Rajamanickam
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Gaozhi Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Zhe Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lingfeng Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yifeng Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Shulin Yang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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923
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Baker CD, Basu Ball W, Pryce EN, Gohil VM. Specific requirements of nonbilayer phospholipids in mitochondrial respiratory chain function and formation. Mol Biol Cell 2016; 27:2161-71. [PMID: 27226479 PMCID: PMC4945136 DOI: 10.1091/mbc.e15-12-0865] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 05/19/2016] [Indexed: 01/06/2023] Open
Abstract
Phosphatidylethanolamine (PE) and cardiolipin have specific roles in the activity and assembly of the mitochondrial respiratory chain supercomplexes, respectively, whereas phosphatidylcholine is redundant. Nonmitochondrial PE can be transported into mitochondria, where it can fully substitute for the lack of mitochondrial PE biosynthesis. Mitochondrial membrane phospholipid composition affects mitochondrial function by influencing the assembly of the mitochondrial respiratory chain (MRC) complexes into supercomplexes. For example, the loss of cardiolipin (CL), a signature non–bilayer-forming phospholipid of mitochondria, results in disruption of MRC supercomplexes. However, the functions of the most abundant mitochondrial phospholipids, bilayer-forming phosphatidylcholine (PC) and non–bilayer-forming phosphatidylethanolamine (PE), are not clearly defined. Using yeast mutants of PE and PC biosynthetic pathways, we show a specific requirement for mitochondrial PE in MRC complex III and IV activities but not for their formation, whereas loss of PC does not affect MRC function or formation. Unlike CL, mitochondrial PE or PC is not required for MRC supercomplex formation, emphasizing the specific requirement of CL in supercomplex assembly. Of interest, PE biosynthesized in the endoplasmic reticulum (ER) can functionally substitute for the lack of mitochondrial PE biosynthesis, suggesting the existence of PE transport pathway from ER to mitochondria. To understand the mechanism of PE transport, we disrupted ER–mitochondrial contact sites formed by the ERMES complex and found that, although not essential for PE transport, ERMES facilitates the efficient rescue of mitochondrial PE deficiency. Our work highlights specific roles of non–bilayer-forming phospholipids in MRC function and formation.
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Affiliation(s)
- Charli D Baker
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843
| | - Writoban Basu Ball
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843
| | - Erin N Pryce
- Integrated Imaging Center, Department of Biology, Johns Hopkins University, Baltimore, MD 21218
| | - Vishal M Gohil
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843
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924
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Chao C, Zatarain JR, Ding Y, Coletta C, Mrazek AA, Druzhyna N, Johnson P, Chen H, Hellmich JL, Asimakopoulou A, Yanagi K, Olah G, Szoleczky P, Törö G, Bohanon FJ, Cheema M, Lewis R, Eckelbarger D, Ahmad A, Módis K, Untereiner A, Szczesny B, Papapetropoulos A, Zhou J, Hellmich MR, Szabo C. Cystathionine-beta-synthase inhibition for colon cancer: Enhancement of the efficacy of aminooxyacetic acid via the prodrug approach. Mol Med 2016; 22:361-379. [PMID: 27257787 DOI: 10.2119/molmed.2016.00102] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 04/21/2016] [Indexed: 01/17/2023] Open
Abstract
Colon cancer cells contain high levels of cystathionine-beta-synthase (CBS). Its product, hydrogen sulfide (H2S) promotes the growth and proliferation of colorectal tumor cells. In order to improve the antitumor efficacy of the prototypical CBS inhibitor aminooxyacetic acid (AOAA), we have designed and synthesized YD0171, a methyl ester derivative of AOAA. The antiproliferative effect of YD0171 exceeded the antiproliferative potency of AOAA in HCT116 human colon cancer cells. The esterase inhibitor paraoxon prevented the cellular inhibition of CBS activity by YD0171. YD0171 suppressed mitochondrial respiration and glycolytic function and induced G0/G1 arrest, but did not induce tumor cell apoptosis or necrosis. Metabolomic analysis in HCT116 cells showed that YD0171 affects multiple pathways of cell metabolism. The efficacy of YD0171 as an inhibitor of tumor growth was also tested in nude mice bearing subcutaneous HCT116 cancer cell xenografts. Animals were treated via subcutaneous injection of vehicle, AOAA (1, 3 or 9 mg/kg/day) or YD0171 (0.1, 0.5 or 1 mg/kg/day) for 3 weeks. Tumor growth was significantly reduced by 9 mg/kg/day AOAA, but not at the lower doses. YD0171 was more potent: tumor volume was significantly inhibited at 0.5 and 1 mg/kg/day. Thus, the in vivo efficacy of YD0171 is 9-times higher than that of AOAA. YD0171 (1 mg/kg/day) attenuated tumor growth and metastasis formation in the intracecal HCT116 tumor model. YD0171 (3 mg/kg/day) also reduced tumor growth in patient-derived tumor xenograft (PDTX) bearing athymic mice. YD0171 (3 mg/kg/day) induced the regression of established HCT116 tumors in vivo. A 5-day safety study in mice demonstrated that YD0171 at 20 mg/kg/day (given in two divided doses) does not increase plasma markers of organ injury, nor does it induce histological alterations in the liver or kidney. YD0171 caused a slight elevation in plasma homocysteine levels. In conclusion, the prodrug approach improves the pharmacological profile of AOAA; YD0171 represents a prototype for CBS inhibitory anticancer prodrugs. By targeting colorectal cancer bioenergetics, an emerging important hallmark of cancer, the approach exemplified herein may offer direct translational opportunities.
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Affiliation(s)
- Celia Chao
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - John R Zatarain
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Ye Ding
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Ciro Coletta
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Amy A Mrazek
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Nadiya Druzhyna
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Paul Johnson
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Haiying Chen
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Judy L Hellmich
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Antonia Asimakopoulou
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Kazunori Yanagi
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Gabor Olah
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Petra Szoleczky
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Gabor Törö
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Fredrick J Bohanon
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Minal Cheema
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Rachel Lewis
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - David Eckelbarger
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Akbar Ahmad
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Katalin Módis
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America,Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Ashley Untereiner
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Bartosz Szczesny
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Andreas Papapetropoulos
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Jia Zhou
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Mark R Hellmich
- Department of Surgery, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Csaba Szabo
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
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925
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Generating Gene Ontology-Disease Inferences to Explore Mechanisms of Human Disease at the Comparative Toxicogenomics Database. PLoS One 2016; 11:e0155530. [PMID: 27171405 PMCID: PMC4865041 DOI: 10.1371/journal.pone.0155530] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/29/2016] [Indexed: 12/20/2022] Open
Abstract
Strategies for discovering common molecular events among disparate diseases hold promise for improving understanding of disease etiology and expanding treatment options. One technique is to leverage curated datasets found in the public domain. The Comparative Toxicogenomics Database (CTD; http://ctdbase.org/) manually curates chemical-gene, chemical-disease, and gene-disease interactions from the scientific literature. The use of official gene symbols in CTD interactions enables this information to be combined with the Gene Ontology (GO) file from NCBI Gene. By integrating these GO-gene annotations with CTD’s gene-disease dataset, we produce 753,000 inferences between 15,700 GO terms and 4,200 diseases, providing opportunities to explore presumptive molecular underpinnings of diseases and identify biological similarities. Through a variety of applications, we demonstrate the utility of this novel resource. As a proof-of-concept, we first analyze known repositioned drugs (e.g., raloxifene and sildenafil) and see that their target diseases have a greater degree of similarity when comparing GO terms vs. genes. Next, a computational analysis predicts seemingly non-intuitive diseases (e.g., stomach ulcers and atherosclerosis) as being similar to bipolar disorder, and these are validated in the literature as reported co-diseases. Additionally, we leverage other CTD content to develop testable hypotheses about thalidomide-gene networks to treat seemingly disparate diseases. Finally, we illustrate how CTD tools can rank a series of drugs as potential candidates for repositioning against B-cell chronic lymphocytic leukemia and predict cisplatin and the small molecule inhibitor JQ1 as lead compounds. The CTD dataset is freely available for users to navigate pathologies within the context of extensive biological processes, molecular functions, and cellular components conferred by GO. This inference set should aid researchers, bioinformaticists, and pharmaceutical drug makers in finding commonalities in disease mechanisms, which in turn could help identify new therapeutics, new indications for existing pharmaceuticals, potential disease comorbidities, and alerts for side effects.
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926
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Chevalier A, Zhang Y, Khdour OM, Hecht SM. Selective Functionalization of Antimycin A Through an N-Transacylation Reaction. Org Lett 2016; 18:2395-8. [DOI: 10.1021/acs.orglett.6b00882] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arnaud Chevalier
- Biodesign Center for BioEnergetics
and School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Yanmin Zhang
- Biodesign Center for BioEnergetics
and School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Omar M. Khdour
- Biodesign Center for BioEnergetics
and School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Sidney M. Hecht
- Biodesign Center for BioEnergetics
and School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
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927
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Abstract
Human mitochondria produce ATP and metabolites to support development and maintain cellular homeostasis. Mitochondria harbor multiple copies of a maternally inherited, non-nuclear genome (mtDNA) that encodes for 13 subunit proteins of the respiratory chain. Mutations in mtDNA occur mainly in the 24 non-coding genes, with specific mutations implicated in early death, neuromuscular and neurodegenerative diseases, cancer, and diabetes. A significant barrier to new insights in mitochondrial biology and clinical applications for mtDNA disorders is our general inability to manipulate the mtDNA sequence. Microinjection, cytoplasmic fusion, nucleic acid import strategies, targeted endonucleases, and newer approaches, which include the transfer of genomic DNA, somatic cell reprogramming, and a photothermal nanoblade, attempt to change the mtDNA sequence in target cells with varying efficiencies and limitations. Here, we discuss the current state of manipulating mammalian mtDNA and provide an outlook for mitochondrial reverse genetics, which could further enable mitochondrial research and therapies for mtDNA diseases.
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Affiliation(s)
- Alexander N Patananan
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | | | - Pei-Yu Chiou
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA; California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Michael A Teitell
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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928
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Honokiol targets mitochondria to halt cancer progression and metastasis. Mol Nutr Food Res 2016; 60:1383-95. [DOI: 10.1002/mnfr.201501007] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/22/2016] [Accepted: 03/25/2016] [Indexed: 12/16/2022]
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929
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DeBerardinis RJ, Chandel NS. Fundamentals of cancer metabolism. SCIENCE ADVANCES 2016; 2:e1600200. [PMID: 27386546 PMCID: PMC4928883 DOI: 10.1126/sciadv.1600200] [Citation(s) in RCA: 1791] [Impact Index Per Article: 223.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/29/2016] [Indexed: 04/14/2023]
Abstract
Tumors reprogram pathways of nutrient acquisition and metabolism to meet the bioenergetic, biosynthetic, and redox demands of malignant cells. These reprogrammed activities are now recognized as hallmarks of cancer, and recent work has uncovered remarkable flexibility in the specific pathways activated by tumor cells to support these key functions. In this perspective, we provide a conceptual framework to understand how and why metabolic reprogramming occurs in tumor cells, and the mechanisms linking altered metabolism to tumorigenesis and metastasis. Understanding these concepts will progressively support the development of new strategies to treat human cancer.
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Affiliation(s)
- Ralph J. DeBerardinis
- Children’s Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Corresponding author. (R.J.D.); (N.S.C.)
| | - Navdeep S. Chandel
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Corresponding author. (R.J.D.); (N.S.C.)
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930
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Victorino VJ, Barroso WA, Assunção AKM, Cury V, Jeremias IC, Petroni R, Chausse B, Ariga SK, Herrera ACSA, Panis C, Lima TM, Souza HP. PGC-1β regulates HER2-overexpressing breast cancer cells proliferation by metabolic and redox pathways. Tumour Biol 2016; 37:6035-44. [PMID: 26602383 DOI: 10.1007/s13277-015-4449-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/17/2015] [Indexed: 10/22/2022] Open
Abstract
Breast cancer is a prevalent neoplastic disease among women worldwide which treatments still present several side effects and resistance. Considering that cancer cells present derangements in their energetic homeostasis, and that peroxisome proliferator-activated receptor- gamma coactivator 1 (PGC-1) is crucial for cellular metabolism and redox signaling, the main objective of this study was to investigate whether there is a relationship between PGC-1 expression, the proliferation of breast cancer cells and the mechanisms involved. We initially assessed PGC-1β expression in complementary DNA (cDNA) from breast tumor of patients bearing luminal A, luminal B, and HER2-overexpressed and triple negative tumors. Our data showed that PGC-1β expression is increased in patients bearing HER2-overexpressing tumors as compared to others subtypes. Using quantitative PCR and immunoblotting, we showed that breast cancer cells with HER2-amplification (SKBR-3) have greater expression of PGC-1β as compared to a non-tumorous breast cell (MCF-10A) and higher proliferation rate. PGC-1β expression was knocked down with short interfering RNA in HER2-overexpressing cells, and cells decreased proliferation. In these PGC-1β-inhibited cells, we found increased citrate synthase activity and no marked changes in mitochondrial respiration. Glycolytic pathway was decreased, characterized by lower intracellular lactate levels. In addition, after PGC-1β knockdown, SKBR-3 cells showed increased reactive oxygen species production, no changes in antioxidant activity, and decreased expression of ERRα, a modulator of metabolism. In conclusion, we show an association of HER2-overexpression and PGC-1β. PGC-1β knockdown impairs HER2-overexpressing cells proliferation acting on ERRα signaling, metabolism, and redox balance.
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Affiliation(s)
- Vanessa Jacob Victorino
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil.
| | - W A Barroso
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - A K M Assunção
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - V Cury
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - I C Jeremias
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - R Petroni
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - B Chausse
- Instituto de Química, Universidade de São Paulo (IQ-USP), São Paulo, Brazil
| | - S K Ariga
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - A C S A Herrera
- Faculdade de Medicina, Pontifícia Universidade Católica, PUC, Campus Londrina, Paraná, Brazil
| | - C Panis
- Laboratório de Mediadores Inflamatórios, Universidade Estadual do Oeste do Paraná (UNIOESTE), Campus Francisco Beltrão, Paraná, Brazil
| | - T M Lima
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - H P Souza
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
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931
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CYC1 Predicts Poor Prognosis in Patients with Breast Cancer. DISEASE MARKERS 2016; 2016:3528064. [PMID: 27239088 PMCID: PMC4864557 DOI: 10.1155/2016/3528064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 04/10/2016] [Indexed: 01/12/2023]
Abstract
Cytochrome c-1 (CYC1) is an important subunit of mitochondrial complex III. However, its role in tumor progression is unclear. We found that CYC1 was upregulated in breast tumor tissues, especially in tissues with lymph node metastasis. And higher expression of CYC1 correlates with poor prognosis in breast cancer patients using online databases and tools. Then we confirmed that CYC1 contributed to metastasis and proliferation in two highly metastatic human breast cancer cell lines. Digging into the biological function of CYC1, we found the activity of mitochondrial complex III decreased due to silencing CYC1. Then the ratio of AMP to ATP increased and AMPK was activated. Analyzing units of other mitochondrial complexes, we did not find knockdown of CYC1 expression reduced expression of any other unit of OXPHOS. We concluded that CYC1 promoted tumor metastasis via suppressing activation of AMPK and contributed to tumor growth via facilitating production of ATP. Our results indicated that CYC1 plays crucial roles in breast cancer progression and might be a predictive factor assisting future patient diagnosis.
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932
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Ye RR, Tan CP, Chen MH, Hao L, Ji LN, Mao ZW. Mono- and Dinuclear Phosphorescent Rhenium(I) Complexes: Impact of Subcellular Localization on Anticancer Mechanisms. Chemistry 2016; 22:7800-9. [DOI: 10.1002/chem.201505160] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Indexed: 01/07/2023]
Affiliation(s)
- Rui-Rong Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P.R. China
| | - Cai-Ping Tan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P.R. China
| | - Mu-He Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P.R. China
| | - Liang Hao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P.R. China
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P.R. China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 P.R. China
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933
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Tan Z, Luo X, Xiao L, Tang M, Bode AM, Dong Z, Cao Y. The Role of PGC1α in Cancer Metabolism and its Therapeutic Implications. Mol Cancer Ther 2016; 15:774-82. [DOI: 10.1158/1535-7163.mct-15-0621] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 01/29/2016] [Indexed: 11/16/2022]
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934
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Park S, Chang CY, Safi R, Liu X, Baldi R, Jasper JS, Anderson GR, Liu T, Rathmell JC, Dewhirst MW, Wood KC, Locasale JW, McDonnell DP. ERRα-Regulated Lactate Metabolism Contributes to Resistance to Targeted Therapies in Breast Cancer. Cell Rep 2016; 15:323-35. [PMID: 27050525 PMCID: PMC4833658 DOI: 10.1016/j.celrep.2016.03.026] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/28/2016] [Accepted: 03/05/2016] [Indexed: 12/22/2022] Open
Abstract
Imaging studies in animals and in humans have indicated that the oxygenation and nutritional status of solid tumors is dynamic. Furthermore, the extremely low level of glucose within tumors, while reflecting its rapid uptake and metabolism, also suggests that cancer cells must rely on other energy sources in some circumstances. Here, we find that some breast cancer cells can switch to utilizing lactate as a primary source of energy, allowing them to survive glucose deprivation for extended periods, and that this activity confers resistance to PI3K/mTOR inhibitors. The nuclear receptor, estrogen-related receptor alpha (ERRα), was shown to regulate the expression of genes required for lactate utilization, and isotopomer analysis revealed that genetic or pharmacological inhibition of ERRα activity compromised lactate oxidation. Importantly, ERRα antagonists increased the in vitro and in vivo efficacy of PI3K/mTOR inhibitors, highlighting the potential clinical utility of this drug combination.
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Affiliation(s)
- Sunghee Park
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Ching-Yi Chang
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Rachid Safi
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Xiaojing Liu
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Robert Baldi
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Jeff S Jasper
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Grace R Anderson
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Tingyu Liu
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Jeffrey C Rathmell
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Mark W Dewhirst
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Kris C Wood
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Jason W Locasale
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Donald P McDonnell
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA.
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935
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Ledderose C, Woehrle T, Ledderose S, Strasser K, Seist R, Bao Y, Zhang J, Junger WG. Cutting off the power: inhibition of leukemia cell growth by pausing basal ATP release and P2X receptor signaling? Purinergic Signal 2016; 12:439-51. [PMID: 27020575 DOI: 10.1007/s11302-016-9510-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/16/2016] [Indexed: 01/12/2023] Open
Abstract
T cells respond to antigen stimulation with the rapid release of cellular ATP, which stimulates an autocrine feedback mechanism that regulates calcium influx through P2X receptors. This autocrine purinergic feedback mechanism plays an essential role in the activation of T cells resulting in cell proliferation and clonal expansion. We recently reported that increases in mitochondrial ATP production drive this stimulation-induced purinergic signaling mechanism but that low-level mitochondrial ATP production fuels basal T cell functions required to maintain vigilance of unstimulated T cells. Here we studied whether defects in these purinergic signaling mechanisms are involved in the unwanted proliferation of leukemia T cells. We found that acute leukemia T cells (Jurkat) possess a larger number and more active mitochondria than their healthy counterparts. Jurkat cells have higher intracellular ATP concentrations and generat more extracellular ATP than unstimulated T cells from healthy donors. As a result, increased purinergic signaling through P2X1 and P2X7 receptors elevates baseline levels of cytosolic Ca(2+) in Jurkat cells. We found that pharmacological inhibition of this basal purinergic signaling mechanism decreases mitochondrial activity, Ca(2+) signaling, and cell proliferation. Similar results were seen in the leukemic cell lines THP-1, U-937, and HL-60. Combined treatment with inhibitors of P2X1 or P2X7 receptors and the chemotherapeutic agent 6-mercaptopurine completely blocked Jurkat cell proliferation. Our results demonstrate that increased mitochondrial metabolism promotes autocrine purinergic signaling and uncontrolled proliferation of leukemia cells. These findings suggest that deranged purinergic signaling can result in T cell malignancy and that therapeutic targeting aimed at purinergic signaling is a potential strategy to combat T cell leukemia.
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Affiliation(s)
- Carola Ledderose
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Tobias Woehrle
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Stephan Ledderose
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Katharina Strasser
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Richard Seist
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Yi Bao
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Jingping Zhang
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Wolfgang G Junger
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA.
- Ludwig Boltzmann Institute for Traumatology, 1200, Vienna, Austria.
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936
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Saha S, Ghosh M, Dutta SK. Role of metabolic modulator Bet-CA in altering mitochondrial hyperpolarization to suppress cancer associated angiogenesis and metastasis. Sci Rep 2016; 6:23552. [PMID: 27003027 PMCID: PMC4802328 DOI: 10.1038/srep23552] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 03/07/2016] [Indexed: 01/05/2023] Open
Abstract
Solid tumors characteristically reflect a metabolic switching from glucose oxidation to glycolysis that plays a fundamental role in angiogenesis and metastasis to facilitate aggressive tumor outcomes. Hyperpolarized mitochondrial membrane potential is a manifestation of malignant cells that compromise the intrinsic pathways of apoptosis and confer a suitable niche to promote the cancer associated hallmark traits. We have previously reported that co-drug Bet-CA selectively targets cancer cells by inducing metabolic catastrophe without a manifest in toxicity. Here we report that the same molecule at a relatively lower concentration deregulates the cardinal phenotypes associated with angiogenesis and metastasis. In mice syngeneic 4T1 breast cancer model, Bet-CA exhibited effective abrogation of angiogenesis and concomitantly obliterated lung metastasis consistent with altered mitochondrial bioenergetics. Furthermore, Bet-CA significantly lowered vascular endothelial growth factor (VEGF) levels and obviated matrix metalloproteases (MMP-2/9) production directly to the criterion where abrogation of autocrine VEGF/VEGFR2 signalling loop was documented. In vitro studies anticipatedly documented the role of Bet-CA in inhibiting actin remodeling, lamellipodia formation and cell membrane ruffling to constitutively suppress cell motility and invasion. Results comprehensively postulate that Bet-CA, a mitochondria targeting metabolic modulator may serve as an excellent candidate for combating angiogenesis and metastasis.
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Affiliation(s)
- Suchandrima Saha
- Drug Development Diagnostic and Biotechnology Division, CSIR- Indian Institute of Chemical Biology (CSIR-IICB), 4, Raja S.C. Mullick Road, Kolkata-700032, West Bengal, India
| | - Monisankar Ghosh
- Drug Development Diagnostic and Biotechnology Division, CSIR- Indian Institute of Chemical Biology (CSIR-IICB), 4, Raja S.C. Mullick Road, Kolkata-700032, West Bengal, India
| | - Samir Kumar Dutta
- Drug Development Diagnostic and Biotechnology Division, CSIR- Indian Institute of Chemical Biology (CSIR-IICB), 4, Raja S.C. Mullick Road, Kolkata-700032, West Bengal, India
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937
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Fujisawa K, Terai S, Takami T, Yamamoto N, Yamasaki T, Matsumoto T, Yamaguchi K, Owada Y, Nishina H, Noma T, Sakaida I. Modulation of anti-cancer drug sensitivity through the regulation of mitochondrial activity by adenylate kinase 4. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2016; 35:48. [PMID: 26980435 PMCID: PMC4793738 DOI: 10.1186/s13046-016-0322-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 03/08/2016] [Indexed: 01/06/2023]
Abstract
BACKGROUND Adenylate kinase is a key enzyme in the high-energy phosphoryl transfer reaction in living cells. An isoform of this enzyme, adenylate kinase 4 (AK4), is localized in the mitochondrial matrix and is believed to be involved in stress, drug resistance, malignant transformation in cancer, and ATP regulation. However, the molecular basis for the AK4 functions remained to be determined. METHODS HeLa cells were transiently transfected with an AK4 small interfering RNA (siRNA), an AK4 short hairpin RNA (shRNA) plasmid, a control shRNA plasmid, an AK4 expression vector, and a control expression vector to examine the effect of the AK4 expression on cell proliferation, sensitivity to anti-cancer drug, metabolome, gene expression, and mitochondrial activity. RESULTS AK4 knockdown cells treated with short hairpin RNA increased ATP production and showed greater sensitivity to hypoxia and anti-cancer drug, cis-diamminedichloro-platinum (II) (CDDP). Subcutaneous grafting AK4 knockdown cells into nude mice revealed that the grafted cells exhibited both slower proliferation and reduced the tumor sizes in response to CDDP. AK4 knockdown cell showed a increased oxygen consumption rate with FCCP treatment, while AK4 overexpression lowered it. Metabolome analysis showed the increased levels of the tricarboxylic acid cycle intermediates, fumarate and malate in AK4 knockdown cells, while AK4 overexpression lowered them. Electron microscopy detected the increased mitochondrial numbers in AK4 knockdown cells. Microarray analysis detected the increased gene expression of two key enzymes in TCA cycle, succinate dehydrogenase A (SDHA) and oxoglutarate dehydrogenease L (OGDHL), which are components of SDH complex and OGDH complex, supporting the metabolomic results. CONCLUSIONS We found that AK4 was involved in hypoxia tolerance, resistance to anti-tumor drug, and the regulation of mitochondrial activity. These findings provide a new potential target for efficient anticancer therapies by controlling AK4 expression.
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Affiliation(s)
- Koichi Fujisawa
- Center for Regenerative Medicine, School of Medicine, Yamaguchi University, Ube, Japan.,Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan
| | - Shuji Terai
- Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan. .,Division of Gastroenterology and Hepatology, School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachidori, Chuo-Ku, Niigata, 951-8510, Japan.
| | - Taro Takami
- Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan
| | - Naoki Yamamoto
- Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan
| | - Takahiro Yamasaki
- Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan.,Department of Oncology and Laboratory Medicine, School of Medicine, Yamaguchi University, Ube, Japan
| | - Toshihiko Matsumoto
- Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan.,Department of Oncology and Laboratory Medicine, School of Medicine, Yamaguchi University, Ube, Japan
| | - Kazuhito Yamaguchi
- Department of Organ Anatomy, School of Medicine, Yamaguchi University, Ube, Japan
| | - Yuji Owada
- Department of Organ Anatomy, School of Medicine, Yamaguchi University, Ube, Japan
| | - Hiroshi Nishina
- Department of Developmental and Regenerative Biology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Takafumi Noma
- Department of Molecular Biology, Institute of Biomedical Sciences, Tokushima University School, Tokushima, Japan
| | - Isao Sakaida
- Center for Regenerative Medicine, School of Medicine, Yamaguchi University, Ube, Japan.,Department of Gastroenterology and Hepatology, School of Medicine, Yamaguchi University, Ube, Japan
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938
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Onyango IG, Dennis J, Khan SM. Mitochondrial Dysfunction in Alzheimer's Disease and the Rationale for Bioenergetics Based Therapies. Aging Dis 2016; 7:201-14. [PMID: 27114851 PMCID: PMC4809610 DOI: 10.14336/ad.2015.1007] [Citation(s) in RCA: 178] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 10/07/2015] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease (AD) is a debilitating neurodegenerative disorder characterized by the progressive loss of cholinergic neurons, leading to the onset of severe behavioral, motor and cognitive impairments. It is a pressing public health problem with no effective treatment. Existing therapies only provide symptomatic relief without being able to prevent, stop or reverse the pathologic process. While the molecular basis underlying this multifactorial neurodegenerative disorder remains a significant challenge, mitochondrial dysfunction appears to be a critical factor in the pathogenesis of this disease. It is therefore important to target mitochondrial dysfunction in the prodromal phase of AD to slow or prevent the neurodegenerative process and restore neuronal function. In this review, we discuss mechanisms of action and translational potential of current mitochondrial and bioenergetic therapeutics for AD including: mitochondrial enhancers to potentiate energy production; antioxidants to scavenge reactive oxygen species and reduce oxidative damage; glucose metabolism and substrate supply; and candidates that target apoptotic and mitophagy pathways to remove damaged mitochondria. While mitochondrial therapeutic strategies have shown promise at the preclinical stage, there has been little progress in clinical trials thus far.
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Affiliation(s)
- Isaac G Onyango
- Gencia Biotechnology, 706 B Forest St, Charlottesville, VA 22903, USA
| | - Jameel Dennis
- Gencia Biotechnology, 706 B Forest St, Charlottesville, VA 22903, USA
| | - Shaharyah M Khan
- Gencia Biotechnology, 706 B Forest St, Charlottesville, VA 22903, USA
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939
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Wang J, Hou X, Jin C, Chao H. A Cyclometalated Iridium(III) Complex Serves as a Phosphorescent Probe for Specific Mitochondrial Imaging in Living Cells. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201500769] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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940
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Clinical aggressiveness of malignant gliomas is linked to augmented metabolism of amino acids. J Neurooncol 2016; 128:57-66. [PMID: 26922345 DOI: 10.1007/s11060-016-2073-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 02/02/2016] [Indexed: 10/22/2022]
Abstract
Glutamine, glutamate, asparagine, and aspartate are involved in an enzyme-network that controls nitrogen metabolism. Branched-chain-amino-acid aminotransferase-1 (BCAT1) promotes proliferation of gliomas with wild-type IDH1 and is closely connected to the network. We hypothesized that metabolism of asparagine, glutamine, and branched-chain-amino-acids is associated with progression of malignant gliomas. Gene expression for asparagine synthetase (ASNS), glutaminase (GLS), and BCAT1 were analyzed in 164 gliomas from 156 patients [33-anaplastic gliomas (AG) and 131-glioblastomas (GBM), 64 of which were recurrent GBMs]. ASNS and GLS were twofold higher in GBMs versus AGs. BCAT1 was also higher in GBMs. ASNS expression was twofold higher in recurrent versus new GBMs. Five patients had serial samples: 4-showed higher ASNS and 3-higher GLS at recurrence. We analyzed grade and treatment in 4 groups: (1) low ASNS, GLS, and BCAT1 (n = 96); (2) low ASNS and GLS, but high BCAT1 (n = 26); (3) high ASNS or GLS, but low BCAT1 (n = 25); and (4) high ASNS or GLS and high BCAT1 (n = 17). Ninety-one % of patients (29/32) with grade-III lesions were in group 1. In contrast, 95 % of patients (62/65) in groups 2-4 had GBMs. Treatment was similar in 4 groups (radiotherapy-80 %; temozolomide-30 %; other chemotherapy-50 %). High expression of ASNS, GLS, and BCAT1 were each associated with poor survival in the entire group. The combination of lower ASNS, GLS, and BCAT1 levels correlated with better survival for newly diagnosed GBMs (66 patients; P = 0.0039). Only tumors with lower enzymes showed improved outcome with temozolomide. IDH1(WT) gliomas had higher expression of these genes. Manipulation of amino acid metabolism in malignant gliomas may be further studied for therapeutics development.
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941
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Petanidis S, Kioseoglou E, Domvri K, Zarogoulidis P, Carthy JM, Anestakis D, Moustakas A, Salifoglou A. In vitro and ex vivo vanadium antitumor activity in (TGF-β)-induced EMT. Synergistic activity with carboplatin and correlation with tumor metastasis in cancer patients. Int J Biochem Cell Biol 2016; 74:121-34. [PMID: 26916505 DOI: 10.1016/j.biocel.2016.02.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 02/10/2016] [Accepted: 02/20/2016] [Indexed: 02/06/2023]
Abstract
Epithelial to mesenchymal transition (EMT) plays a key role in tumor progression and metastasis as a crucial event for cancer cells to trigger the metastatic niche. Transforming growth factor-β (TGF-β) has been shown to play an important role as an EMT inducer in various stages of carcinogenesis. Previous reports had shown that antitumor vanadium inhibits the metastatic potential of tumor cells by reducing MMP-2 expression and inducing ROS-dependent apoptosis. However, the role of vanadium in (TGF-β)-induced EMT remains unclear. In the present study, we report for the first time on the inhibitory effects of vanadium on (TGF-β)-mediated EMT followed by down-regulation of ex vivo cancer stem cell markers. The results demonstrate blockage of (TGF-β)-mediated EMT by vanadium and reduction in the mitochondrial potential of tumor cells linked to EMT and cancer metabolism. Furthermore, combination of vanadium and carboplatin (a) resulted in synergistic antitumor activity in ex vivo cell cultures, and (b) prompted G0/G1 cell cycle arrest and sensitization of tumor cells to carboplatin-induced apoptosis. Overall, the findings highlight the multifaceted antitumor action of vanadium and its synergistic antitumor efficacy with current chemotherapy drugs, knowledge that could be valuable for targeting cancer cell metabolism and cancer stem cell-mediated metastasis in aggressive chemoresistant tumors.
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Affiliation(s)
- Savvas Petanidis
- Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
| | - Efrosini Kioseoglou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
| | - Kalliopi Domvri
- Pulmonary Department-Oncology Unit, "G. Papanikolaou" General Hospital, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece.
| | - Paul Zarogoulidis
- Pulmonary Department-Oncology Unit, "G. Papanikolaou" General Hospital, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece.
| | - Jon M Carthy
- Ludwig Institute for Cancer Research, Science for Life Laboratory, Uppsala University, Uppsala SE-75124, Sweden.
| | - Doxakis Anestakis
- Laboratory of Forensic Medicine and Toxicology, Medical School, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece; Laboratory of General Biology, Medical School, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
| | - Aristidis Moustakas
- Ludwig Institute for Cancer Research, Science for Life Laboratory, Uppsala University, Uppsala SE-75124, Sweden; Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala SE-75123, Sweden.
| | - Athanasios Salifoglou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
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942
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Anajafi T, Scott MD, You S, Yang X, Choi Y, Qian SY, Mallik S. Acridine Orange Conjugated Polymersomes for Simultaneous Nuclear Delivery of Gemcitabine and Doxorubicin to Pancreatic Cancer Cells. Bioconjug Chem 2016; 27:762-71. [DOI: 10.1021/acs.bioconjchem.5b00694] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Tayebeh Anajafi
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Michael D. Scott
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Seungyong You
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Xiaoyu Yang
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Yongki Choi
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Steven Y. Qian
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Sanku Mallik
- Department of Pharmaceutical Sciences, and ‡Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
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943
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Satoh K, Zhang L, Zhang Y, Chelluri R, Boufraqech M, Nilubol N, Patel D, Shen M, Kebebew E. Identification of Niclosamide as a Novel Anticancer Agent for Adrenocortical Carcinoma. Clin Cancer Res 2016; 22:3458-66. [PMID: 26873959 DOI: 10.1158/1078-0432.ccr-15-2256] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 02/05/2016] [Indexed: 01/09/2023]
Abstract
PURPOSE Adrenocortical carcinoma (ACC) is a rare and aggressive cancer, and no current effective therapy is available for locally advanced and metastatic ACC. Drug repurposing is an emerging approach for identifying new indications for existing drugs, especially for rare cancers such as ACC. The objective of this study was to use quantitative high-throughput screening to identify agents with antineoplastic activity against ACC. EXPERIMENTAL DESIGN A screening of 4,292 compounds was performed on three ACC cell lines: BD140A, SW-13, and NCI-H295R. RESULTS Twenty-one active compounds were identified, with an efficacy of >80% in all three cell lines. Of these, niclosamide showed higher efficacy and lower IC50 than established anti-ACC drugs. We then validated niclosamide-inhibited cellular proliferation in all three ACC cell lines. Next, we investigated the mechanism by which niclosamide inhibited ACC cell proliferation, and found that it induced caspase-dependent apoptosis and G1 cell-cycle arrest. Niclosamide also decreased cellular migration and reduced the level of mediators of epithelial-to-mesenchymal transition, such as N-cadherin and vimentin. Furthermore, niclosamide treatment resulted in decreased expression of β-catenin. We also evaluated the effect of niclosamide on energy metabolism in ACC cell lines and found it resulted in mitochondrial uncoupling. Niclosamide treatment inhibited ACC tumor growth with no observed toxicity in mice in vivo CONCLUSIONS Our findings suggest that niclosamide has anti-ACC activity through its inhibition of multiple altered cellular pathways and cellular metabolism in ACC. Our results provide a preclinical rationale for evaluating niclosamide therapy in a clinical trial for ACC. Clin Cancer Res; 22(14); 3458-66. ©2016 AACR.
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Affiliation(s)
- Kei Satoh
- Endocrine Oncology Branch, National Cancer Institute, NIH, Bethesda, Maryland. Icahn School of Medicine at Mount Sinai, New York, New York
| | - Lisa Zhang
- Endocrine Oncology Branch, National Cancer Institute, NIH, Bethesda, Maryland
| | - Yaqin Zhang
- Division of Pre-Clinical Innovation, National Center for Advancing Translational Sciences, NIH, Bethesda, Maryland
| | - Raju Chelluri
- SUNY Upstate Medical University at Syracuse, Syracuse, New York
| | - Myriem Boufraqech
- Endocrine Oncology Branch, National Cancer Institute, NIH, Bethesda, Maryland
| | - Naris Nilubol
- Endocrine Oncology Branch, National Cancer Institute, NIH, Bethesda, Maryland
| | - Dhaval Patel
- Endocrine Oncology Branch, National Cancer Institute, NIH, Bethesda, Maryland
| | - Min Shen
- Division of Pre-Clinical Innovation, National Center for Advancing Translational Sciences, NIH, Bethesda, Maryland
| | - Electron Kebebew
- Endocrine Oncology Branch, National Cancer Institute, NIH, Bethesda, Maryland.
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944
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Hamacher-Brady A, Brady NR. Mitophagy programs: mechanisms and physiological implications of mitochondrial targeting by autophagy. Cell Mol Life Sci 2016; 73:775-95. [PMID: 26611876 PMCID: PMC4735260 DOI: 10.1007/s00018-015-2087-8] [Citation(s) in RCA: 291] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 02/07/2023]
Abstract
Mitochondria are an essential source of ATP for cellular function, but when damaged, mitochondria generate a plethora of stress signals, which lead to cellular dysfunction and eventually programmed cell death. Thus, a major component of maintaining cellular homeostasis is the recognition and removal of dysfunctional mitochondria through autophagy-mediated degradation, i.e., mitophagy. Mitophagy further constitutes a developmental program, and undergoes a high degree of crosstalk with apoptosis. Reduced mitochondrial quality control is linked to disease pathogenesis, suggesting the importance of process elucidation as a clinical target. Recent work has revealed multiple mitophagy programs that operate independently or undergo crosstalk, and require modulated autophagy receptor activities at outer membranes of mitochondria. Here, we review these mitophagy programs, focusing on pathway mechanisms which recognize and target mitochondria for sequestration by autophagosomes, as well as mechanisms controlling pathway activities. Furthermore, we provide an introduction to the currently available methods for detecting mitophagy.
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Affiliation(s)
- Anne Hamacher-Brady
- Lysosomal Systems Biology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
- Bioquant, University of Heidelberg, INF 267, BQ0045, 69120, Heidelberg, Germany.
| | - Nathan Ryan Brady
- Systems Biology of Cell Death Mechanisms, German Cancer Research Center (DKFZ), Heidelberg, Germany.
- Department of Surgery, Heidelberg University Hospital, Heidelberg, Germany.
- Bioquant, University of Heidelberg, INF 267, BQ0045, 69120, Heidelberg, Germany.
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945
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Abstract
For decades, tumor cells have been considered defective in mitochondrial respiration due to their dominant glycolytic metabolism. However, a growing body of evidence is now challenging this assumption, and also implying that tumors are metabolically less homogeneous than previously supposed. A small subpopulation of slow-cycling cells endowed with tumorigenic potential and multidrug resistance has been isolated from different tumors. Deep metabolic characterization of these tumorigenic cells revealed their dependency on mitochondrial respiration versus glycolysis, suggesting the existence of a common metabolic program active in slow-cycling cells across different tumors. These findings change our understanding of tumor metabolism and also highlight new vulnerabilities that can be exploited to eradicate cancer cells responsible for tumor relapse.
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946
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Ye RR, Tan CP, Ji LN, Mao ZW. Coumarin-appended phosphorescent cyclometalated iridium(iii) complexes as mitochondria-targeted theranostic anticancer agents. Dalton Trans 2016; 45:13042-51. [DOI: 10.1039/c6dt00601a] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Three phosphorescent cyclometalated iridium(iii) complexes with mitochondria-specific localization and apoptosis-inducing capability have been explored as the theranostic anticancer agents.
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Affiliation(s)
- Rui-Rong Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Cai-Ping Tan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
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947
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Yan B, Dong L, Neuzil J. Mitochondria: An intriguing target for killing tumour-initiating cells. Mitochondrion 2016; 26:86-93. [DOI: 10.1016/j.mito.2015.12.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/25/2015] [Accepted: 12/14/2015] [Indexed: 12/12/2022]
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948
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Ghosh M, Saha S, Dutta SK. Synergism of metabolic modulators Bet-CA and LDCA: a rational combinatorial approach to selectively combat cancer associated hallmark traits. RSC Adv 2016. [DOI: 10.1039/c6ra14366k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The strategic combination of two metabolic modulators, Bet-CA and LDCA in a calculated ratio selectively and synergistically inhibits the hallmark traits of cancer by altering the highly resilient mitochondrial bioenergetics.
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Affiliation(s)
- Monisankar Ghosh
- Drug Development Diagnostic and Biotechnology Division
- CSIR – Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata-700032
- India
| | - Suchandrima Saha
- Drug Development Diagnostic and Biotechnology Division
- CSIR – Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata-700032
- India
| | - Samir Kumar Dutta
- Drug Development Diagnostic and Biotechnology Division
- CSIR – Indian Institute of Chemical Biology (CSIR-IICB)
- Kolkata-700032
- India
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949
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Xu Z, Xu L. Fluorescent probes for the selective detection of chemical species inside mitochondria. Chem Commun (Camb) 2016; 52:1094-119. [DOI: 10.1039/c5cc09248e] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This feature article systematically summarizes the development of fluorescent probes for the selective detection of chemical species inside mitochondria.
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Affiliation(s)
- Zheng Xu
- Chongqing Key Laboratory of Environmental Materials and Remediation Technology
- College of Materials and Chemical Engineering
- Chongqing University of Arts and Sciences
- Chongqing
- China
| | - Lin Xu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
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950
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Guntuku L, Naidu VGM, Yerra VG. Mitochondrial Dysfunction in Gliomas: Pharmacotherapeutic Potential of Natural Compounds. Curr Neuropharmacol 2016; 14:567-83. [PMID: 26791479 PMCID: PMC4981742 DOI: 10.2174/1570159x14666160121115641] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/08/2015] [Accepted: 01/20/2016] [Indexed: 11/22/2022] Open
Abstract
Gliomas are the most common primary brain tumors either benign or malignant originating from the glial tissue. Glioblastoma multiforme (GBM) is the most prevalent and aggressive form among all gliomas, associated with decimal prognosis due to it`s high invasive nature. GBM is also characterized by high recurrence rate and apoptosis resistance features which make the therapeutic targeting very challenging. Mitochondria are key cellular organelles that are acting as focal points in diverse array of cellular functions such as cellular energy metabolism, regulation of ion homeostasis, redox signaling and cell death. Eventual findings of mitochondrial dysfunction include preference of glycolysis over oxidative phosphorylation, enhanced reactive oxygen species generation and abnormal mitochondria mediated apoptotic machinery are frequently observed in various malignancies including gliomas. In particular, gliomas harbor mitochondrial structure abnormalities, genomic mutations in mtDNA, altered energy metabolism (Warburg effect) along with mutations in isocitrate dehydrogenase (IDH) enzyme. Numerous natural compounds have shown efficacy in the treatment of gliomas by targeting mitochondrial aberrant signaling cascades. Some of the natural compounds directly target the components of mitochondria whereas others act indirectly through modulating metabolic abnormalities that are consequence of the mitochondrial dysfunction. The present review offers a molecular insight into mitochondrial pathology in gliomas and therapeutic mechanisms of some of the promising natural compounds that target mitochondrial dysfunction. This review also sheds light on the challenges and possible ways to overcome the hurdles associated with these natural compounds to enter into the clinical market.
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Affiliation(s)
| | - V G M Naidu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, India.
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