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Gap Junction Intercellular Communication Positively Regulates Cisplatin Toxicity by Inducing DNA Damage through Bystander Signaling. Cancers (Basel) 2018; 10:cancers10100368. [PMID: 30279363 PMCID: PMC6210410 DOI: 10.3390/cancers10100368] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 12/14/2022] Open
Abstract
The radiation-induced bystander effect (RIBE) can increase cellular toxicity in a gap junction dependent manner in unirradiated bystander cells. Recent reports have suggested that cisplatin toxicity can also be mediated by functional gap junction intercellular communication (GJIC). In this study using lung and ovarian cancer cell lines, we showed that cisplatin cytotoxicity is mediated by cellular density. This effect is ablated when GJA1 or Connexin 43 (Cx43) is targeted, a gap junction gene and protein, respectively, leading to cisplatin resistance but only at high or gap junction forming density. We also observed that the cisplatin-mediated bystander effect was elicited as DNA Double Strand Breaks (DSBs) with positive H2AX Ser139 phosphorylation (γH2AX) formation, an indicator of DNA DSBs. These DSBs are not observed when gap junction formation is prevented. We next showed that cisplatin is not the “death” signal traversing the gap junctions by utilizing the cisplatin-GG intrastrand adduct specific antibody. Finally, we also showed that cells deficient in the structure-specific DNA endonuclease ERCC1-ERCC4 (ERCC1-XPF), an important mediator of cisplatin resistance, further sensitized when treated with cisplatin in the presence of gap junction forming density. Taken together, these results demonstrate the positive effect of GJIC on increasing cisplatin cytotoxicity.
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Petyaev IM, Zigangirova NA, Pristensky D, Chernyshova M, Tsibezov VV, Chalyk NE, Morgunova EY, Kyle NH, Bashmakov YK. Non-Invasive Immunofluorescence Assessment of Lycopene Supplementation Status in Skin Smears. Monoclon Antib Immunodiagn Immunother 2018; 37:139-146. [DOI: 10.1089/mab.2018.0012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ivan M. Petyaev
- Department of Research and Development, Lycotec Ltd., Granta Park, Cambridge, United Kingdom
| | - Naylia A. Zigangirova
- Department of Medical Microbiology, Gamaleya Federal Research Center of Epidemiology and Microbiology, Ministry of Health, Moscow, Russia
| | - Dmitry Pristensky
- Department of Research and Development, Lycotec Ltd., Granta Park, Cambridge, United Kingdom
| | - Marina Chernyshova
- Department of Research and Development, Lycotec Ltd., Granta Park, Cambridge, United Kingdom
| | - Valeriy V. Tsibezov
- Department of Medical Microbiology, Gamaleya Federal Research Center of Epidemiology and Microbiology, Ministry of Health, Moscow, Russia
| | - Natalya E. Chalyk
- Department of Clinical Cardiology, Institute of Cardiology, Saratov, Russia
| | - Elena Y. Morgunova
- Department of Medical Microbiology, Gamaleya Federal Research Center of Epidemiology and Microbiology, Ministry of Health, Moscow, Russia
| | - Nigel H. Kyle
- Department of Research and Development, Lycotec Ltd., Granta Park, Cambridge, United Kingdom
| | - Yuriy K. Bashmakov
- Department of Research and Development, Lycotec Ltd., Granta Park, Cambridge, United Kingdom
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George ES, Kucianski T, Mayr HL, Moschonis G, Tierney AC, Itsiopoulos C. A Mediterranean Diet Model in Australia: Strategies for Translating the Traditional Mediterranean Diet into a Multicultural Setting. Nutrients 2018; 10:E465. [PMID: 29642557 PMCID: PMC5946250 DOI: 10.3390/nu10040465] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/04/2018] [Accepted: 04/08/2018] [Indexed: 01/22/2023] Open
Abstract
Substantial evidence supports the effect of the Mediterranean Diet (MD) for managing chronic diseases, although trials have been primarily conducted in Mediterranean populations. The efficacy and feasibility of the Mediterranean dietary pattern for the management of chronic diseases has not been extensively evaluated in non-Mediterranean settings. This paper aims to describe the development of a MD model that complies with principles of the traditional MD applied in a multiethnic context. Optimal macronutrient and food-based composition was defined, and a two-week menu was devised incorporating traditional ingredients with evidence based on improvements in chronic disease management. Strategies were developed for the implementation of the diet model in a multiethnic population. Consistent with the principles of a traditional MD, the MD model was plant-based and high in dietary fat, predominantly monounsaturated fatty acids from extra virgin olive oil. Fruits, vegetables and wholegrains were a mainstay, and moderate amounts of nuts and seeds, fish, dairy and red wine were recommended. The diet encompassed key features of the MD including cuisine, biodiversity and sustainability. The MD model preserved traditional dietary components likely to elicit health benefits for individuals with chronic diseases, even with the adaptation to an Australian multiethnic population.
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Affiliation(s)
- Elena S George
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Health Sciences 3, Kingsbury Drive, Bundoora, VIC 3086, Australia.
- School of Exercise and Nutrition Sciences, Deakin University, Building J, 221 Burwood Hwy, Burwood, VIC 3125, Australia.
| | - Teagan Kucianski
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Health Sciences 3, Kingsbury Drive, Bundoora, VIC 3086, Australia.
| | - Hannah L Mayr
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Health Sciences 3, Kingsbury Drive, Bundoora, VIC 3086, Australia.
| | - George Moschonis
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Health Sciences 3, Kingsbury Drive, Bundoora, VIC 3086, Australia.
| | - Audrey C Tierney
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Health Sciences 3, Kingsbury Drive, Bundoora, VIC 3086, Australia.
- School of Allied Health, University of Limerick, Castletroy, Limerick V94 T9PX, Ireland.
| | - Catherine Itsiopoulos
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Health Sciences 3, Kingsbury Drive, Bundoora, VIC 3086, Australia.
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Huang J, Lu MS, Fang YJ, Xu M, Huang WQ, Pan ZZ, Chen YM, Zhang CX. Serum carotenoids and colorectal cancer risk: A case-control study in Guangdong, China. Mol Nutr Food Res 2017; 61. [PMID: 28605127 DOI: 10.1002/mnfr.201700267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/11/2017] [Accepted: 05/29/2017] [Indexed: 11/07/2022]
Abstract
SCOPE Previous epidemiological studies on the association between circulating carotenoids and the risk of colorectal cancer drew inconclusive conclusions. This study aimed to examine serum carotenoids in relation to colorectal cancer risk in a Chinese population. METHODS AND RESULTS One case-control study beginning from July 2010, consecutively recruited 538 eligible colorectal cancer cases and 564 age (5-year interval) and sex frequency-matched controls. Serum levels of α-carotene, β-carotene, β-cryptoxanthin, lycopene and lutein/zeaxanthin were detected by HPLC. Unconditional logistic regression was used to estimate the odds ratio (OR) and 95% confidence internal (CI) after adjusting for various confounders. Serum levels of α-carotene, β-cryptoxanthin and lycopene were found to be inversely associated with colorectal cancer risk. The adjusted ORs of the highest quartile relative to the lowest quartile serum level were 0.49 (95% CIs 0.33-0.72) for α-carotene, 0.44 (95% CIs 0.29-0.66) for β-cryptoxanthin, and 0.36 (95% CIs 0.24-0.54) for lycopene, respectively. The association between serum β-carotene, lutein/zeaxanthin and colorectal cancer risk was not statistically significant. CONCLUSION The results indicated that the incidence of colorectal cancer was associated with lower serum levels of α-carotene, β-cryptoxanthin and lycopene among Chinese population residing in Guangdong.
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Affiliation(s)
- Jing Huang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Min-Shan Lu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Yu-Jing Fang
- Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China.,Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Ming Xu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Wu-Qing Huang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Zhi-Zhong Pan
- Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Yu-Ming Chen
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Cai-Xia Zhang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
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