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Zhao M, Wen Y, Yang Y, Pan H, Xie S, Shen C, Liao W, Chen N, Zheng Q, Zhang G, Li Y, Gong D, Tang J, Zhao Z, Zeng J. (-)-Asarinin alleviates gastric precancerous lesions by promoting mitochondrial ROS accumulation and inhibiting the STAT3 signaling pathway. Phytomedicine 2024; 126:155348. [PMID: 38335913 DOI: 10.1016/j.phymed.2024.155348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 12/20/2023] [Accepted: 01/08/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND (-)-Asarinin (Asarinin) is the primary component in the extract of the herb Asarum sieboldii Miq. It possesses various functions, including pain relief, anti-viral and anti-tuberculous bacilli effects, and inhibition of tumor growth. Gastric precancerous lesion (GPL) is a common but potentially carcinogenic chronic gastrointestinal disease, and its progression can lead to gastric dysfunction and cancer development. However, the protective effects of asarinin against GPL and the underlying mechanisms remain unexplored. METHODS A premalignant cell model (methylnitronitrosoguanidine-induced malignant transformation of human gastric epithelial cell strain, MC cells) and a GPL animal model were established and then were treated with asarinin. The cytotoxic effect of asarinin was assessed using a CCK8 assay. Detection of intracellular reactive oxygen species (ROS) using DCFH-DA. Apoptosis in MC cells was evaluated using an annexin V-FITC/PI assay. We performed western blot analysis and immunohistochemistry (IHC) to analyze relevant markers, investigating the in vitro and in vivo therapeutic effects of asarinin on GPL and its intrinsic mechanisms. RESULTS Our findings showed that asarinin inhibited MC cell proliferation, enhanced intracellular ROS levels, and induced cell apoptosis. Further investigations revealed that the pharmacological effects of asarinin on MC cells were blocked by the ROS scavenger N-acetylcysteine. IHC revealed a significant upregulation of phospho-signal transducer and activator of transcription 3 (p-STAT3) protein expression in human GPL tissues. In vitro, asarinin exerted its pro-apoptotic effects in MC cells by modulating the STAT3 signaling pathway. Agonists of STAT3 were able to abolish the effects of asarinin on MC cells. In vivo, asarinin induced ROS accumulation and inhibited the STAT3 pathway in gastric mucosa of mice, thereby halting and even reversing the development of GPL. CONCLUSION Asarinin induces apoptosis and delays the progression of GPL by promoting mitochondrial ROS production, decreasing mitochondrial membrane potential (MMP), and inhibiting the STAT3 pathway.
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Affiliation(s)
- Maoyuan Zhao
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China; School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Yueqiang Wen
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Yi Yang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China
| | - Huafeng Pan
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Shunkai Xie
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Caifei Shen
- Department of Endoscopy Center, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China
| | - Wenhao Liao
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China
| | - Nianzhi Chen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China
| | - Qiao Zheng
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China
| | - Gang Zhang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China
| | - Yuchen Li
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China
| | - Daoyin Gong
- Department of Pathology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China
| | - Jianyuan Tang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China.
| | - Ziyi Zhao
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China.
| | - Jinhao Zeng
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shi-er-Qiao Road, Chengdu, Sichuan 610072, China; Department of Gastroenterology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China.
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Tian L, Zuoqin D, Jiaqi W, Xiaomeng J, Xin D, Yan Y, Youkun Z, Jianbo W. Obesity phenotype induced by high-fat diet promotes diethylnitrosamine (DEN)-induced precancerous lesions by M1 macrophage polarization in mice liver. J Nutr Biochem 2024; 125:109566. [PMID: 38176623 DOI: 10.1016/j.jnutbio.2023.109566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 12/26/2023] [Accepted: 12/31/2023] [Indexed: 01/06/2024]
Abstract
Liver precancerous lesions are the key to improving the efficacy of cancer treatment because of the extremely poor prognosis of HCC patients in moderate and late stages. Obesity-related HCC progression is closely related to the inflammatory microenvironment, in which macrophages are one of the major constituents. In the present study, we ask whether obesity promotes diethylnitrosamine (DEN)-induced precancerous lesions by M1 macrophage polarization. First, an association between obesity and liver precancerous lesions was determined by histopathological observations, immunochemistry and immunoblotting. The characteristics of early precancerous lesions (trabecular thickening) appeared earlier eight weeks in obese mice than in normal diet mice after DEN induction. The glutathione S-transferase placental-1 (Gstp 1) and alpha-fetoprotein (AFP) expression in obese mice after DEN induction was higher than that in the same period after DEN injection in normal diet mice. Furthermore, there was a significant increase in the total macrophage number (F4/80+) of DEN and M1 macrophage number (CD86+F4/80+) in obese mice compared with that in normal diet mice. Besides, the expressions of four pro-inflammatory factors in DEN-induced obese mice were significantly higher compared with that in normal diet mice. Additionally, angiogenesis was revealed by immunostaining assay to be associated with the inflammatory response. All the results demonstrate that obesity promotes DEN-induced precancerous lesions by inducing M1 macrophage polarization and angiogenesis.
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Affiliation(s)
- Li Tian
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China; Luzhou Municipal Key Laboratory of Thrombosis and Vascular Biology, Luzhou, Sichuan, China
| | - Du Zuoqin
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Wu Jiaqi
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Jin Xiaomeng
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Deng Xin
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Yang Yan
- Chongqing Tongnan NO.1 Middle School, Tongnan, Chongqing, China
| | - Zheng Youkun
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China; Luzhou Municipal Key Laboratory of Thrombosis and Vascular Biology, Luzhou, Sichuan, China
| | - Wu Jianbo
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China; Luzhou Municipal Key Laboratory of Thrombosis and Vascular Biology, Luzhou, Sichuan, China.
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Jiang W, Lu W, Liu J, Ren H, Zhao X, Yang W. miR-520f-3p blocks MNNG-induced gastric precancerous lesions via the KLF7/NFκB pathway. Toxicol Lett 2024; 392:64-74. [PMID: 38184286 DOI: 10.1016/j.toxlet.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/15/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024]
Abstract
Studying the regulatory mechanism of gastric disease progression to gastric cancer (GC) is essential. miR-520f expression is down-regulated in GC and inhibits the proliferation of gastric cancer cells, suggesting that it is associated with the development of GC, but whether it plays a role in the gastric precancerous lesion (GPL) is unclear. This study aimed to investigate the effect of miR-520f-3p in the N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-induced GPL model and to elucidate the role of its downstream target gene Kruppel-like factor 7 (KLF7) in it. The experimental results showed that miR-520f-3p expression was down-regulated in the MNNG-induced GES-1 cell model, and overexpression of miR-520f-3p reversed the effects of MNNG on cell migration, invasion and epithelial-mesenchymal transition (EMT) -related protein expression. Meanwhile, overexpression of KLF7 attenuated the effect of miR-520f-3p on GPL. In a mouse GPL model, it was observed that MNNG elicited inflammation and EMT processes in mouse gastric tissues through the KLF7/ Nuclear Factor Kappa B (NFκB) pathway, and silencing KLF7 alleviated MNNG-induced gastric epithelial cell injury and gastric atrophy symptoms. These results provide a new perspective for understanding the development of GPL, and the development of new therapies targeting miR-520f-3p and KLF7 may provide new ideas for the prevention and treatment of gastric cancer.
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Affiliation(s)
- Wei Jiang
- Department of Infectious Diseases, Tianjin First Central Hospital, China
| | - Wei Lu
- Liver Cancer Center, Tianjin Medical University Cancer Institute & Hospital, China
| | - Jun Liu
- Department of Infectious Diseases, Tianjin First Central Hospital, China
| | - Haixia Ren
- Department of Pharmacy, Tianjin First Central Hospital, China
| | - Xuequn Zhao
- Department of Infectious Diseases, Tianjin First Central Hospital, China
| | - Wenjie Yang
- Department of Infectious Diseases, Tianjin First Central Hospital, China.
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Zhu Y, Ma R, Cheng W, Qin M, Guo W, Qi Y, Dai J. Sijunzi decoction ameliorates gastric precancerous lesions via regulating oxidative phosphorylation based on proteomics and metabolomics. J Ethnopharmacol 2024; 318:116925. [PMID: 37467821 DOI: 10.1016/j.jep.2023.116925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sijunzi decoction (SJZD), a traditional Chinese medicine formula, is commonly used in clinical practice for the treatment of gastric precancerous lesions (GPL). However, the mechanism of gastric protection is not fully understood. AIMS OF THE STUDY The purpose of this study was to systematically evaluate the efficacy of SJZD in blocking the development of GPL and to reveal the underlying mechanism. METHODS First, we established a rat model of GPL, which was induced by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) combined with an irregular diet and 40% ethanol. The efficacy of SJZD was evaluated based on pathological sections and serum biochemical indices. Then, the pharmacodynamic mechanism of SJZD was revealed by quantitative proteomics based on stable isotope dimethyl labeling. At the same time, the pharmacodynamic mechanism was verified by quantitative metabolomics. In addition, the anti-gastritis effect of SJZD was confirmed by a serum pharmacology method in a cell model, and the functional mechanism was further verified. RESULTS We demonstrated that SJZD could block the development of GPL in the animal model. Proteomics and metabolomics revealed that SJZD blocks GPL development by regulating oxidative phosphorylation (OXPHOS). In addition, the serum pharmacology results showed that SJZD-containing serum (SJZD-CS) could inhibit apoptosis in MNNG-induced GES-1 cells. OXPHOS inhibitors could significantly reduce the protective effect of SJZD-CS. CONCLUSION SJZD effectively ameliorates GPL, and proteomics and metabolomics revealed that its protective effects are closely related to OXPHOS.
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Affiliation(s)
- Yanning Zhu
- School of Pharmacy, Lanzhou University, Lanzhou, PR China
| | - Ruyun Ma
- School of Pharmacy, Lanzhou University, Lanzhou, PR China
| | - Wen Cheng
- School of Pharmacy, Lanzhou University, Lanzhou, PR China
| | - Mengyao Qin
- School of Pharmacy, Lanzhou University, Lanzhou, PR China
| | - Weiheng Guo
- School of Pharmacy, Lanzhou University, Lanzhou, PR China
| | - Ying Qi
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, PR China
| | - Jianye Dai
- School of Pharmacy, Lanzhou University, Lanzhou, PR China; Collaborative Innovation Center for Northwestern Chinese Medicine, Lanzhou University, Lanzhou, PR China.
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Espírito Santo SG, Da Silva TC, Cogliati B, Barbisan LF, Romualdo GR. Panx1 knockout promotes preneoplastic aberrant crypt foci development in a chemically induced model of mouse colon carcinogenesis. Int J Exp Pathol 2023; 104:304-312. [PMID: 37594023 PMCID: PMC10652697 DOI: 10.1111/iep.12491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/18/2023] [Accepted: 08/03/2023] [Indexed: 08/19/2023] Open
Abstract
Colorectal cancer, which is the third leading cause of cancer-related deaths worldwide, is a multistep disease, featuring preneoplastic aberrant crypt foci (ACF) as the early morphological manifestation. The roles of hemichannel-forming transmembrane Pannexin 1 (Panx1) protein have not been investigated in the context of colon carcinogenesis yet, although it has contrasting roles in other cancer types. Thus, this study was conducted to examine the effects of Panx1 knockout (Panx1-/- ) on the early events of chemically induced colon carcinogenesis in mouse. Wild type (WT) and Panx1-/- female C57BL6J mice were submitted to a chemically induced model of colon carcinogenesis by receiving six intraperitoneal administrations of 1,2-dimethylhydrazine (DMH) carcinogen. Animals were euthanized 8 h (week 7) or 30 weeks (week 37) after the last DMH administration in order to evaluate sub-acute colon toxicity outcomes or the burden of ACF, respectively. At week 7, Panx1 genetic ablation increased DMH-induced genotoxicity in peripheral blood cells, malondialdehyde levels in the colon, and apoptosis (cleaved caspase-3) in colonic crypts. Of note, at week 37, Panx1-/- animals showed an increase in aberrant crypts (AC), ACF mean number, and ACF multiplicity (AC per ACF) by 56%, 57% and 20%, respectively. In essence, our findings indicate that Panx1 genetic ablation promotes preneoplastic ACF development during chemically induced mouse colon carcinogenesis, and a protective role of Panx1 is postulated.
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Affiliation(s)
- Sara Gomes Espírito Santo
- Botucatu Medical School, Experimental Research Unit (UNIPEX), Multimodel Drug Screening Platform – Laboratory of Chemically Induced and Experimental Carcinogenesis (MDSP‐LCQE)São Paulo State University (UNESP)BotucatuSão Paulo StateBrazil
| | - Tereza Cristina Da Silva
- School of Veterinary Medicine and Animal Science, Department of PathologyUniversity of São Paulo (USP)São PauloSão Paulo StateBrazil
| | - Bruno Cogliati
- School of Veterinary Medicine and Animal Science, Department of PathologyUniversity of São Paulo (USP)São PauloSão Paulo StateBrazil
| | - Luís Fernando Barbisan
- Botucatu Medical School, Experimental Research Unit (UNIPEX), Multimodel Drug Screening Platform – Laboratory of Chemically Induced and Experimental Carcinogenesis (MDSP‐LCQE)São Paulo State University (UNESP)BotucatuSão Paulo StateBrazil
- Biosciences Institute, Department of Structural and Functional BiologySão Paulo State University (UNESP)São Paulo StateBrazil
| | - Guilherme Ribeiro Romualdo
- Botucatu Medical School, Experimental Research Unit (UNIPEX), Multimodel Drug Screening Platform – Laboratory of Chemically Induced and Experimental Carcinogenesis (MDSP‐LCQE)São Paulo State University (UNESP)BotucatuSão Paulo StateBrazil
- Biosciences Institute, Department of Structural and Functional BiologySão Paulo State University (UNESP)São Paulo StateBrazil
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Lv F, Wang J, Mao L, Zhou X, Zhang T, Zhou S. Whether long-term use of proton pump inhibitor increases the risk of precancerous lesions in the stomach: A systematic review and meta-analysis of randomized controlled trials. Medicine (Baltimore) 2023; 102:e35062. [PMID: 37747015 PMCID: PMC10519510 DOI: 10.1097/md.0000000000035062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/18/2023] [Accepted: 08/11/2023] [Indexed: 09/26/2023] Open
Abstract
BACKGROUND To evaluate through meta-analysis whether long-term use of proton pump inhibitor (PPI) increases the risk of precancerous lesions in the stomach. METHODS Randomized controlled trials that compared the occurrence and progression of precancerous lesions in patients receiving PPI treatment versus non-PPI treatment were retrieved from CNKI, VIP, Wanfang, CBM, Pubmed, Embase, Web of Science, and Cochrane Library databases (from database inception to May 1, 2023). The Revman 5.3 and STATA 17.0 software were used for analysis, and subgroup analysis was conducted based on follow-up time (≤12 months and > 12 months) and lesion type (atrophic gastritis, intestinal metaplasia, and epithelial dysplasia). RESULTS Six randomized controlled trials with a total of 1623 cases were included, including 1015 cases in the experimental group and 608 cases in the control group. The meta-analysis results showed that the overall abnormal lesion rate combined with statistical relative risk (RR) = 1.31 (0.85-2.02), P = .23. Subgroup analysis showed that the follow-up time > 12 months combined result was RR = 2.21 (1.47-3.33), P = .0001, the intestinal metaplasia group combined result was RR = 1.96 (0.91-2.47), P = .04. CONCLUSION SUBSECTIONS During long-term follow-up, patients using PPI exhibited a significantly higher incidence of overall abnormal lesions compared to the control group, particularly with a higher risk observed for intestinal metaplasia. However, there were no statistically significant differences between the 2 groups in terms of short-term follow-up and other types of lesions. It is important to exercise caution when interpreting these findings due to the limited number of nominated investigations included in the meta-analysis.
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Affiliation(s)
- Fangyi Lv
- Department of the First Clinical Medical, Guizhou University of Traditional Chinese Medicine, Guizhou, China
| | - Jincheng Wang
- Department of the First Clinical Medical, Guizhou University of Traditional Chinese Medicine, Guizhou, China
| | - Leiming Mao
- Department of the First Clinical Medical, Guizhou University of Traditional Chinese Medicine, Guizhou, China
| | - Xiangyu Zhou
- Department of the First Clinical Medical, Guizhou University of Traditional Chinese Medicine, Guizhou, China
| | - Taiwei Zhang
- Department of Obstetrics, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guizhou, China
| | - Sufang Zhou
- Department of Gastroenterology, the First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guizhou, China
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Liao W, Wen Y, Wang J, Zhao M, Lv S, Chen N, Li Y, Wan L, Zheng Q, Mou Y, Zhao Z, Tang J, Zeng J. Gallic acid alleviates gastric precancerous lesions through inhibition of epithelial mesenchymal transition via Wnt/β-catenin signaling pathway. J Ethnopharmacol 2023; 302:115885. [PMID: 36328204 DOI: 10.1016/j.jep.2022.115885] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Gallic acid (GA) is a natural polyphenolic compound derived from Rhus chinensis Mill. with a variety of biological activities such as astringent sweat, cough, dysentery, hemostasis, and detoxification, and is widely used in China as a treatment for cough, bleeding, and gastrointestinal disorders. In recent years, the anticancer activity of GA has been demonstrated in a variety of cancers, affecting multiple cellular pathways associated with cancer onset, development and progression. AIM OF THE STUDY To investigate the role and potential mechanism of GA on gastric precancerous lesions (GPL), the key turning point of gastritis to gastric cancer, with the aim of delaying, blocking or reversing the dynamic overall process of "inflammation-cancer transformation" and thus blocking GPL to prevent the development of gastric cancer. MATERIALS AND METHODS In this study, we established N-Nitroso-N-methylurea (MNU)-induced GPL mice model and induced precancerous lesions of gastric cancer cells (MC), i.e. epithelial mesenchymal transition (EMT), in human gastric mucosal epithelial cells (GES-1) with N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). We used conventional pathology, immunohistochemistry, RNA sequencing, Western blot and other techniques to study the therapeutic effect of GA on GPL and its possiblemechanism in vitro and in vivo. RESULTS The results showed that compared with normal GES-1 cells, MC cells had the characteristics of malignant cells such as abnormal proliferation, invasion and metastasis, accompanied by decreased expression of EMT-related protein E-cadherin and increased expression of N-cadherin and Vimentin. GA can inhibit the malignant behavior of MC cell proliferation and induce its G0/G1 phase arrest, which is achieved by downregulating the Wnt/β-catenin signaling pathway and thereby inhibiting the EMT process. However, when we incubated with the Wnt pathway activator (Wnt agonist 1), the effect of GA was reversed. Furthermore, analysis of human gastric specimens showed that activation of the Wnt/β-catenin pathway was significantly associated with GPL pathological changes. Meanwhile, GA reversed MNU-induced intestinal metaplasia and partial dysplasia in GPL mice. CONCLUSION Taken together, these results indicate that GA prevents the occurrence and development of GPL by inhibiting the Wnt/β-catenin signaling pathway and then inhibiting the EMT process, which may become potential candidates for the treatment of GPL.
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Affiliation(s)
- Wenhao Liao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yueqiang Wen
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jing Wang
- Department of Obstetrics and Gynecology, Bishan District Hospital of Traditional Chinese Medicine, Chongqing, China.
| | - Maoyuan Zhao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Shangbin Lv
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Nianzhi Chen
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.
| | - Yuchen Li
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Lina Wan
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Qiao Zheng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yu Mou
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Ziyi Zhao
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China.
| | - Jianyuan Tang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China.
| | - Jinhao Zeng
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China; Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China.
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8
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Niu JT, Liu SG, Jiang N, Wang L, Li C. [Establishment of a rat model of laryngeal precancerous lesions induced by 4NQO smearing]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:969-973. [PMID: 36058664 DOI: 10.3760/cma.j.cn115330-20210901-00588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To establish a rat model for laryngeal precancerous lesions histologically and pathologically comparable to the human counterpart. Methods: Thirty-six Wistar rats were randomly divided into experimental group and control group, with 18 rats in each group, and 1% 4-nitroquinoline-1-oxide (4NQO) solution and saline were respectively applied to the laryngeal mucosas of rats in two groups. During subsequent 20 weeks, the changes of laryngeal mucosas were regularly observed with naked eyes and endoscope and lesions were determined by histology. SPSS 22.0 software was used for statistical analysis. Results: The food intake, water intake and body weight of the rats in the experimental group were lower than those in the control group, with statistically significant differences (all P<0.05). White plaque, superficial ulcer, erosion and miliary particles were present in the larynxes of rats in the experimental group, with histological manifestations of atypical hyperplasia or carcinoma in situ, and normal epitheliums were shown in the control group. The number of Ki67 positive cells in the laryngeal mucosas of rats in the experimental group at the 4 th, 8 th, 12 th, 16 th, and 20 th weeks were 13.5±2.4, 35.6±5.8, 53.4±8.3, 78.8±11.6, 80.6±12.4, respectively, no Ki67 positive cells were found in the control group at individual time points, and the differences were statistically significant (t=9.74, 10.63, 11.14, 11.77, 11.26, respectively, all P<0.01). Conclusion: 4NQO can credibly cause rats laryngeal precancerous lesions, which morphologically and histologically mimic laryngeal carcinnogenesis. This method is practical, easy and reliable to prepare the animal model of laryngeal precancerous lesions.
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Affiliation(s)
- J T Niu
- Department of Otolaryngology, Head and Neck Surgery, Second Hospital of Tianjin Medical University, Tianjin 300221, China
| | - S G Liu
- Department of Urology, Tianjin Jinnan Hospital, Tianjin 300350, China
| | - N Jiang
- Tianjin Institute of Urology, Tianjin 300221, China
| | - L Wang
- Department of Otolaryngology, Xixian People's Hospital, Xinyang City, Henan Province, Xinyang 464000, China
| | - C Li
- Department of Otolaryngology, Head and Neck Surgery, Second Hospital of Tianjin Medical University, Tianjin 300221, China
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Lv S, Chen X, Chen Y, Gong D, Mao G, Shen C, Xia T, Cheng J, Luo Z, Cheng Y, Li W, Zeng J. Ginsenoside Rg3 induces apoptosis and inhibits proliferation by down-regulating TIGAR in rats with gastric precancerous lesions. BMC Complement Med Ther 2022; 22:188. [PMID: 35840932 PMCID: PMC9284801 DOI: 10.1186/s12906-022-03669-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 07/06/2022] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Ginsenoside Rg3 (GRg3) is one of the main active ingredients in Chinese ginseng extract and has various biological effects, such as immune-enhancing, antitumour, antiangiogenic, immunomodulatory and anti-inflammatory effects. This study aimed to investigate the therapeutic effect of GRg3 on gastric precancerous lesion (GPL) induced by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and the potential mechanism of action. METHODS The MNNG-ammonia composite modelling method was used to establish a rat model of GPL. Histopathological changes in the rat gastric mucosa were observed by pathological analysis using haematoxylin-eosin staining to assess the success rate of the composite modelling method. Alcian blue-periodic acid Schiff staining was used to observe intestinal metaplasia in the rat gastric mucosa. Apoptosis was detected in rat gastric mucosal cells by terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling staining. The production level of reactive oxygen species (ROS) was determined by the dihydroethidium fluorescent probe method, and that of TP53-induced glycolysis and apoptosis regulator (TIGAR) protein was determined by immunohistochemical staining and western blotting. The production levels of nicotinamide adenine dinucleotide phosphate (NADP) and glucose-6-phosphate dehydrogenase (G6PDH) were determined by an enzyme-linked immunosorbent assay, and that of glutathione (GSH) was determined by microanalysis. RESULTS GRg3 significantly alleviated the structural disorganization and cellular heteromorphism in the form of epithelial glands in the gastric mucosa of rats with GPL and retarded the progression of the disease. Overexpression of TIGAR and overproduction of NADP, GSH and G6PDH occurred in the gastric mucosal epithelium of rats with GPL, which in turn led to an increase in the ROS concentration. After treatment with GRg3, the expression of TIGAR and production of NADP, GSH G6PDH decreased, causing a further increase in the concentration of ROS in the gastric mucosal epithelium, which in turn induced apoptosis and played a role in inhibiting the abnormal proliferation and differentiation of gastric mucosal epithelial cells. CONCLUSION Grg3 can induce apoptosis and inhibit cell proliferation in MNNG-induced GPL rats. The mechanism may be related to down-regulating the expression levels of TIGAR and production levels of GSH, NADP and G6PD, and up-regulating the concentration of ROS.
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Affiliation(s)
- Shangbin Lv
- Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaodong Chen
- Department of Gastrointestinal Surgery, Sichuan Cancer Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yu Chen
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Daoyin Gong
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Gang Mao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Caifei Shen
- Digestive Endoscopy Center, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ting Xia
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jing Cheng
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhaoliang Luo
- Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yu Cheng
- Sichuan University West China Hospital Ganzi Hospital, Ganzi, China
| | - Weihong Li
- Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jinhao Zeng
- Department of Chinese Internal Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Mehta RG. Functional Significance of Selective Expression of ERα and ERβ in Mammary Gland Organ Culture. Int J Mol Sci 2021; 22:ijms222313151. [PMID: 34884959 PMCID: PMC8658419 DOI: 10.3390/ijms222313151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 11/26/2021] [Accepted: 12/02/2021] [Indexed: 02/07/2023] Open
Abstract
Thoracic pair of mammary glands from steroid hormone-pretreated mice respond to hormones structurally and functionally in organ culture. A short exposure of glands for 24 h to 7,12 Dimethylbenz(a)anthracene (DMBA) during a 24-day culture period induced alveolar or ductal lesions. Methods: To differentiate the functional significance of ERα and ERβ, we employed estrogen receptor (ER) knockout mice. We compared the effects of DMBA on the development of preneoplastic lesions in the glands in the absence of ERα (αERKO) and ERβ (βERKO) using an MMOC protocol. Glands were also subjected to microarray analyses. We showed that estradiol can be replaced by EGF for pretreatment of mice. The carcinogen-induced lesions developed under both steroids and EGF pretreatment protocols. The glands from αERKO did not develop any lesions, whereas in βERKO mice in which ERα is intact, mammary alveolar lesions developed. Comparison of microarrays of control, αERKO and βERKO mice showed that ERα was largely responsible for proliferation and the MAP kinase pathways, whereas ERβ regulated steroid metabolism-related genes. The results indicate that ERα is essential for the development of precancerous lesions. Both subtypes, ERα and Erβ, differentially regulated gene expression in mammary glands in organ cultures.
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Affiliation(s)
- Rajendra G Mehta
- IIT Research Institute, 10 West 35th St., Chicago, IL 60616, USA
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11
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Cerretelli G, Zhou Y, Müller MF, Adams DJ, Arends MJ. Ethanol-induced formation of colorectal tumours and precursors in a mouse model of Lynch syndrome. J Pathol 2021; 255:464-474. [PMID: 34543445 PMCID: PMC9291843 DOI: 10.1002/path.5796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/02/2021] [Accepted: 09/15/2021] [Indexed: 12/19/2022]
Abstract
Lynch syndrome (LS) confers inherited cancer predisposition due to germline mutations in a DNA mismatch repair (MMR) gene, e.g. MSH2. MMR is a repair pathway for removal of base mismatches and insertion/deletion loops caused by endogenous and exogenous factors. Loss of MMR through somatic alteration of the wild-type allele in LS results in defective MMR (dMMR). Lifestyle/environmental factors can modify colorectal cancer risk in sporadic and LS patients. Ethanol and its metabolite acetaldehyde are classified as group one carcinogens, and acetaldehyde causes a range of DNA lesions. However, DNA repair pathways responsible for correcting most of such DNA lesions remain uncharacterised. We hypothesised that MMR plays a role in protecting colorectal epithelium from ethanol/acetaldehyde-induced DNA damage. Here, an LS mouse model (intestinal epithelial conditional-knockout for Msh2) was used to determine if there is a gene-environment interaction between dMMR and ethanol/acetaldehyde that accelerates colorectal tumourigenesis in LS. Mice underwent either long-term ethanol treatment or water treatment. Most ethanol-treated mice demonstrated colonic hyperproliferation and adenoma formation (with some invasive adenocarcinomas) within 6 months (15/23, 65%), compared with one colonic tumour after 15 months in water-treated mice (1/23, 4%) (p < 0.0001, Fisher's exact test). A significantly greater number of dMMR colonic crypt foci precursors were observed in ethanol-treated compared with water-treated mice (p = 0.0029, Student's t-test). Moreover, increased plasma acetaldehyde levels were detected in ethanol-treated compared with water-treated mice (p = 0.0019, Mann-Whitney U-test), along with significantly increased DNA damage response in the colonic epithelium. Long-term ethanol treatment was associated with significantly increased colonic epithelial proliferation and markedly reduced apoptosis in dMMR adenomas, consistent with enhanced survival of aberrant dMMR relative to MMR-proficient colonic epithelium. In conclusion, there is strong evidence for a gene-environment interaction between dMMR and acetaldehyde, causing acceleration of dMMR-driven colonic tumour formation in this LS model, indicating that advice to limit alcohol consumption should be considered for LS patients. © 2021 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Guia Cerretelli
- Division of Pathology, Centre for Comparative Pathology, CRUK Edinburgh Centre, Institute of Genetics and Cancer, Western General HospitalUniversity of EdinburghEdinburghUK
| | - Ying Zhou
- Division of Pathology, Centre for Comparative Pathology, CRUK Edinburgh Centre, Institute of Genetics and Cancer, Western General HospitalUniversity of EdinburghEdinburghUK
| | - Mike F Müller
- Division of Pathology, Centre for Comparative Pathology, CRUK Edinburgh Centre, Institute of Genetics and Cancer, Western General HospitalUniversity of EdinburghEdinburghUK
| | | | - Mark J Arends
- Division of Pathology, Centre for Comparative Pathology, CRUK Edinburgh Centre, Institute of Genetics and Cancer, Western General HospitalUniversity of EdinburghEdinburghUK
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Skorstengaard M, Lynge E, Napolitano G, Blaakær J, Bor P. Risk of precancerous cervical lesions in women using a hormone-containing intrauterine device and other contraceptives: a register-based cohort study from Denmark. Hum Reprod 2021; 36:1796-1807. [PMID: 33974685 PMCID: PMC8213448 DOI: 10.1093/humrep/deab066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
STUDY QUESTION Is the risk of high-grade precancerous cervical lesions and/or is the risk of lesion progression increased in users of a hormone-containing intrauterine device (HIUD) compared with users of other contraceptive methods. SUMMARY ANSWER Women starting use of HIUD had the same subsequent risk of cervical intraepithelial neoplasia 3+ (CIN3+) as copper IUD (CIUD) users, and both groups tended to have lower risks than oral contraceptives (OC) users. WHAT IS KNOWN ALREADY HIUDs may cause inflammatory and immunosuppressive changes that may potentially affect the risk of persistent human papillomavirus infection and precancerous cervical lesions. STUDY DESIGN, SIZE, DURATION A Danish population-based cohort study was conducted using register data from 2008 to 2011 on 26–50-year-old users of HIUD (n = 60 551), CIUD (n = 30 303), or OC (n = 165 627). PARTICIPANTS/MATERIALS, SETTING, METHODS Within each user group, women were divided into two groups; normal cytology or abnormal diagnosis before start of contraceptive use (baseline). Follow-up histology and cytology diagnoses were registered during the 5 years after baseline. Adjusted relative risks (aRR) and 95% CI were calculated for precancerous cervical lesions in HIUD users compared with CIUD and OC users. MAIN RESULTS AND THE ROLE OF CHANCE Women with normal cytology at baseline: at follow-up HIUD users had the same risk of CIN3 or higher (3+) as CIUD users; aRR 1.08 (95% CI 0.94–1.22). For the HIUD and CIUD groups compared with OCs, the risks of CIN3+ were lower: aRR 0.63 (95% CI 0.57–0.69) and aRR 0.58 (95% CI 0.52–0.65), respectively. The same was observed for CIN2 risks: aRR 0.86 (95% CI 0.76–0.96) and aRR 0.68 (95% CI 0.58–0.79) for HIUD and CIUD groups, respectively. Women with abnormal diagnosis at baseline: a lower progression risk, except for CIN2+ at baseline, was observed in HIUD users compared with OC users. Similar progression risks were found in HIUD and CIUD users. There were no differences between the three contraceptive groups in persistence or regression of present lesions. LIMITATIONS, REASONS FOR CAUTION We adjusted for age, education, and region of residence as a proxy for socio-economic factors. Data on smoking and sexual behavior were not available thus we cannot exclude some differences between the three user groups. WIDER IMPLICATIONS OF THE FINDINGS These findings suggest that women may safely use HIUDs. STUDY FUNDING/COMPETING INTEREST(S) A.P. Møller Foundation for the Advancement of Medical Science, Else and Mogens Wedell-Wedellborgs Fund, Direktør Emil C. Hertz og Hustru Inger Hertz Fund, and the Fund for Development of Evidence Based Medicine in Private Specialized Practices. EL is principle investigator for a study with HPV-test-kits provided by Roche. The other authors have nothing to declare. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Malene Skorstengaard
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
- Correspondence address. Department of Public Health, University of Copenhagen, Øster Farimagsgade 5, DK 1014 København K, Denmark. Tel: + 45-27-20-23-83; E-mail: https://orcid.org/0000-0002-6395-9783
| | - Elsebeth Lynge
- Centre for Epidemiological Research, Nykøbing Falster Hospital, University of Copenhagen, Copenhagen, Denmark
| | - George Napolitano
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Jan Blaakær
- Department of Obstetrics and Gynecology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Pinar Bor
- Department of Obstetrics and Gynecology, Randers Regional Hospital, Randers, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Apolinário LA, Ramalho LNZ, Moosavi MH, Jager AV, Augusto MJ, Trotta MR, Petta T, Khaneghah AM, Oliveira CAF, Ramalho FS. Oncogenic and tumor suppressor pathways in subchronic aflatoxicosis in rats: Association with serum and urinary aflatoxin exposure biomarkers. Food Chem Toxicol 2021; 153:112263. [PMID: 34015426 DOI: 10.1016/j.fct.2021.112263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 04/29/2021] [Accepted: 05/10/2021] [Indexed: 11/17/2022]
Abstract
In this study, the changes in oncogenic and tumor suppressor signaling pathways in liver and their association with serum and urinary biomarkers of aflatoxin exposure were evaluated in Wistar rats fed diets containing aflatoxin B1 (AFB1) for 90 days. Rats were divided into four groups (n = 15 per group) and assigned to dietary treatments containing 0 (control), 50 (AFB50), 100 (AFB100) and 200 μg AFB1 kg-1 diet (AFB200). Multiple preneoplastic foci of hepatocytes marked with glutathione-S-transferase-placental form (GST-P) were identified in AFB100 and AFB200 groups. Hepatocellular damage induced by AFB1 resulted in overexpression of cyclin D1 and β-catenin. The liver expression of retinoblastoma (Rb) and p27Kip1 decreased in AFB100 and AFB200 groups, confirming the favorable conditions for neoplastic progression to hepatocellular carcinoma. All samples from rats fed AFB1-contaminated diets had quantifiable AFB1-lysine in serum or urinary AFM1 and AFB1-N7-guanine, with mean levels of 20.42-50.34 ng mL-1, 5.31-37.68 and 39.15-126.37 ng mg-1 creatinine, respectively. Positive correlations were found between AFB1-lysine, AFM1 or AFB1-N7-guanine and GST-P+, β-catenin+ and cyclin D1+ hepatocytes, while Rb + cells negatively correlated with those AFB1 exposure biomarkers. The pathways evaluated are critical molecular mechanisms of AFB1-induced hepatocarcinogenesis in rats.
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Affiliation(s)
- Letícia A Apolinário
- Department of Pathology and Legal Medicine, School of Medicine at Ribeirão Preto, University of São Paulo, Av. do Café, s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Leandra N Z Ramalho
- Department of Pathology and Legal Medicine, School of Medicine at Ribeirão Preto, University of São Paulo, Av. do Café, s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Motahareh Hashemi Moosavi
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alessandra V Jager
- Department of Bio Molecular Sciences, School of Pharmaceutical Sciences at Ribeirão Preto, University of São Paulo, Av. do Café, s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Marlei J Augusto
- Department of Pathology and Legal Medicine, School of Medicine at Ribeirão Preto, University of São Paulo, Av. do Café, s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Maurício R Trotta
- Department of Pathology and Legal Medicine, School of Medicine at Ribeirão Preto, University of São Paulo, Av. do Café, s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Tânia Petta
- Actinobac Agrosciences. Supera - Parque de Inovação e Tecnologia de Ribeirão Preto, Av. Dra. Nadir Águiar, 1805, CEP, 14056-680, Ribeirão Preto, SP, Brazil
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP). R. Monteiro Lobato, 80, CEP, 13083-862, Campinas, SP, Brazil
| | - Carlos A F Oliveira
- Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo. Av. Duque de Caxias Norte, 225, CEP, 13635-900, Pirassununga, SP, Brazil.
| | - Fernando S Ramalho
- Department of Pathology and Legal Medicine, School of Medicine at Ribeirão Preto, University of São Paulo, Av. do Café, s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
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Matboli M, Hasanin AH, Hussein R, El-Nakeep S, Habib EK, Ellackany R, Saleh LA. Cyanidin 3-glucoside modulated cell cycle progression in liver precancerous lesion, in vivo study. World J Gastroenterol 2021; 27:1435-1450. [PMID: 33911466 PMCID: PMC8047539 DOI: 10.3748/wjg.v27.i14.1435] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/22/2021] [Accepted: 03/26/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Cyanidin-3-O-glucoside (cyan) exhibits antioxidant and anticancer properties. The cell cycle proteins and antimitotic drugs might be promising therapeutic targets in hepatocellular carcinoma.
AIM To investigate the effect of cyan administration on cell cycle in hepatic precancerous lesion (PCL) induced by diethylnitrosamine/2-acetylaminofluorene (DEN/2-AAF) in Wistar rats.
METHODS In vivo, DEN/2-AAF-induced hepatic PCL, rats were treated with three doses of cyan (10, 15, and 20 mg/kg/d, for four consecutive days per week for 16 wk). Blood and liver tissue samples were collected for measurement of the followings; alpha fetoprotein (AFP) liver function and RNA panel differential expression was evaluated via real time polymerase chain reaction. Histopathological examination of liver sections stained with H&E and immunohistochemical study using glutathione S-transferase placental (GSTP) and proliferating cell nuclear antigen (PCNA) antibodies were assessed.
RESULTS Cyan administration mitigated the effect of DEN/2-AFF induced PCL, decreased AFP levels, and improved liver function. Remarkably, treatment with cyan dose dependently decreased the long non-coding RNA MALAT1 and tubulin gamma 1 mRNA expressions and increased the levels of miR-125b, all of which are involved in cell cycle and mitotic spindle assembly. Of note, cyan decreased GSTP foci percent area and PCNA positively stained nuclei.
CONCLUSION Our results indicated that cyan could be used as a potential therapeutic agent to inhibit liver carcinogenesis in rat model via modulation of cell cycle.
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Affiliation(s)
- Marwa Matboli
- Department of Biochemistry, Ain Shams Faculty of Medicine, Cairo 11318, Egypt
| | - Amany H Hasanin
- Department of Clinical Pharmacology, Ain Shams Faculty of Medicine, Cairo 11381, Egypt
| | - Reham Hussein
- Department of Clinical Pharmacology, Ain Shams Faculty of Medicine, Cairo 11381, Egypt
| | - Sarah El-Nakeep
- Department of General Internal Medicine, Ain Shams Faculty of Medicine, Cairo 11381, Egypt
| | - Eman K Habib
- Department of Anatomy & Embryology, Ain Shams Faculty of Medicine, Cairo 11318, Egypt
| | - Rawan Ellackany
- Department of Undergraduate, Faculty of Medicine, Modern University for Technology and Information, Cairo 11381, Egypt
| | - Lobna A Saleh
- Department of Clinical Pharmacology, Ain Shams Faculty of Medicine, Cairo 11381, Egypt
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Snir Y, Leibovitzh H, Leibovici‐Weissman Y, Vilkin A, Cohen AD, Shochat T, Niv Y, Dotan I, Feldhamer I, Boltin D, Levi Z. Dose-dependent association of proton pump inhibitors use with gastric intestinal metaplasia among Helicobacter pylori-positive patients. United European Gastroenterol J 2021; 9:343-353. [PMID: 32962566 PMCID: PMC8259238 DOI: 10.1177/2050640620951403] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/23/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Gastric intestinal metaplasia is a pre-cancerous condition associated with multiple factors. OBJECTIVE We evaluated whether cumulative proton pump inhibitor dose is associated with the diagnosis of gastric intestinal metaplasia while controlling for multiple variables. METHODS We retrospectively identified patients who underwent upper endoscopy with gastric biopsy between 2005 and 2014. Covariate data retrieved included age, sex, ethnicity, smoking status, Helicobacter pylori status (based on clarithromycin-amoxicillin-proton pump inhibitor issued), cumulative proton pump inhibitor issued within 10 years (quartiles [PPI-Q1-4 ] of daily drug dose), anti-parietal cell antibodies, body mass index and comorbidity index. RESULTS Of the 14,147 included patients (median age 63.4 years; women 54.4%; Helicobacter pylori-positive 29.0%), 1244 (8.8%) had gastric intestinal metaplasia. Increasing age, Helicobacter pylori infection, smoking, anti-parietal cell antibodies and proton pump inhibitor use were all associated with the diagnosis of gastric intestinal metaplasia. Upper quartiles of cumulative proton pump inhibitor doses (PPI-Q4 and PPI-Q3 vs. PPI-Q1 ) were associated with the diagnosis of gastric intestinal metaplasia: adjusted odds ratios 1.32 (95% confidence interval [CI] 1.111.57) and 1.27 (95% CI 1.07-1.52), respectively, for the whole cohort (Ptotal 0.007, Ptrend 0.013), 1.69 (95% CI 1.23-2.33) and 1.40 (95% CI 1.04-1.89), respectively, for Helicobacter pylori-positive patients (Ptotal 0.004, Ptrend 0.005) and 1.21 (95% CI 0.98-1.49) and 1.20 (95% CI 0.96-1.49), respectively, for Helicobacter pylori-negative patients (Ptotal 0.288, Ptrend 0.018). Upper quartiles of proton pump inhibitor dose were associated with a 5-10-fold increased risk of low-grade dysplasia. CONCLUSIONS Among Helicobacter pylori-positive patients, proton pump inhibitor use appears to be associated with a dose-dependent increased likelihood of gastric intestinal metaplasia.
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Affiliation(s)
- Yifat Snir
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
| | - Haim Leibovitzh
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
| | | | - Alex Vilkin
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
| | - Arnon D. Cohen
- Department of Quality Measurements and ResearchClalit Health ServicesTel AvivIsrael
- Siaal Research Center for Family Medicine and Primary CareBenGurion University of the NegevBeer‐ShevaIsrael
| | - Tzippy Shochat
- Department of BiostatisticsRabin Medical CenterPetach TikvaIsrael
| | - Yaron Niv
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
- Sackler School of MedicineTel Aviv UniversityTel AvivIsrael
| | - Iris Dotan
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
- Sackler School of MedicineTel Aviv UniversityTel AvivIsrael
| | - Ilan Feldhamer
- Department of Quality Measurements and ResearchClalit Health ServicesTel AvivIsrael
| | - Doron Boltin
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
- Sackler School of MedicineTel Aviv UniversityTel AvivIsrael
| | - Zohar Levi
- Division of GastroenterologyRabin Medical CenterPetah TikvaIsrael
- Sackler School of MedicineTel Aviv UniversityTel AvivIsrael
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Velagapudi K, Jeevigunta NLL, Bodiga VL. Zinc dyshomeostasis in azoxymethane-induced colonic precancerous and cancerous lesions in Fischer rats. Metallomics 2021; 13:mfaa009. [PMID: 33595654 DOI: 10.1093/mtomcs/mfaa009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/10/2020] [Accepted: 12/17/2020] [Indexed: 11/13/2022]
Abstract
Zinc is an essential micronutrient involved in various biological processes. It is also argued that tumors need zinc for maintenance and proliferation and tumor cell apoptosis. Zinc homeostasis is regulated by the gastrointestinal tract and involves interplay of host, dietary, environmental and social factors such as alcohol consumption. The DNA alkylation agent azoxymethane (AOM), which is primarily activated in the liver, induces a high incidence of initiation and promotion steps of precancerous lesions in the colon of rats. The altered expression of hepatic zinc transporters by AOM may lead to zinc dyshomeostasis in liver. Decreased serum zinc concentration, despite increased liver zinc also indicates altered liver zinc mobilization and failure to regulate zinc homeostasis. During the transformation from normal colonic mucosa to colonic epithelial hyperplasia and aberrant crypt formation, a reduction in zinc concentration is observed. It will be interesting to study further if the same trend continues throughout tumor progression towards adenocarcinomas. Lowered local zinc concentrations in the colon epithelium may not just reflect a bystander effect, but may induce cell proliferation and compromise DNA integrity due to impairment of zinc-containing proteins. In congruence with the tissue zinc concentrations, metallothionein levels were found to be less induced in AOM -administered colon compared to normal healthy colon. Lowered tissue zinc levels in small and large intestine were also associated with increased expression of mRNA and protein ZnT1. In this regard, the mode of zinc responsiveness to ZnT1 mimics that of metallothionein, albeit at a lower level for ZnT1.
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Affiliation(s)
- Kavitha Velagapudi
- Department of Biosciences and Biotechnology, Krishna University, Machilipatnam, Andhra Pradesh, India
| | | | - Vijaya Lakshmi Bodiga
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad, Telangana, India
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Lin H, Huang YS, Fustin JM, Doi M, Chen H, Lai HH, Lin SH, Lee YL, King PC, Hou HS, Chen HW, Young PY, Chao HW. Hyperpolyploidization of hepatocyte initiates preneoplastic lesion formation in the liver. Nat Commun 2021; 12:645. [PMID: 33510150 PMCID: PMC7844417 DOI: 10.1038/s41467-020-20572-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 12/09/2020] [Indexed: 01/30/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most predominant primary malignancy in the liver. Genotoxic and genetic models have revealed that HCC cells are derived from hepatocytes, but where the critical region for tumor foci emergence is and how this transformation occurs are still unclear. Here, hyperpolyploidization of hepatocytes around the centrilobular (CL) region is demonstrated to be closely linked with the development of HCC cells after diethylnitrosamine treatment. We identify the CL region as a dominant lobule for accumulation of hyperpolyploid hepatocytes and preneoplastic tumor foci formation. We also demonstrate that upregulation of Aurkb plays a critical role in promoting hyperpolyploidization. Increase of AURKB phosphorylation is detected on the midbody during cytokinesis, causing abscission failure and hyperpolyploidization. Pharmacological inhibition of AURKB dramatically reduces nucleus size and tumor foci number surrounding the CL region in diethylnitrosamine-treated liver. Our work reveals an intimate molecular link between pathological hyperpolyploidy of CL hepatocytes and transformation into HCC cells.
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MESH Headings
- Animals
- Carcinoma, Hepatocellular/chemically induced
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Cell Transformation, Neoplastic/chemically induced
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/metabolism
- Cells, Cultured
- Diethylnitrosamine/toxicity
- Female
- Hepatocytes/drug effects
- Hepatocytes/metabolism
- Humans
- Liver/drug effects
- Liver/metabolism
- Liver/pathology
- Liver Neoplasms/chemically induced
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Male
- Mice, Inbred C57BL
- Mice, Inbred ICR
- Mice, Inbred NOD
- Mice, Knockout
- Mice, SCID
- Microscopy, Confocal
- Polyploidy
- Precancerous Conditions/chemically induced
- Precancerous Conditions/genetics
- Precancerous Conditions/metabolism
- Mice
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Affiliation(s)
- Heng Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Yen-Sung Huang
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Jean-Michel Fustin
- Laboratory of Molecular Metabology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
- The University of Manchester, Faculty of Biology, Medicine and Health, Oxford Road, Manchester, M13 9PL, UK
| | - Masao Doi
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyō-ku, Kyoto, 606-8501, Japan
| | - Huatao Chen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hui-Huang Lai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Shu-Hui Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Yen-Lurk Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Pei-Chih King
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Hsien-San Hou
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Hao-Wen Chen
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Pei-Yun Young
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Hsu-Wen Chao
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.
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18
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Melis M, Zhang T, Scognamiglio T, Gudas LJ. Mutations in long-lived epithelial stem cells and their clonal progeny in pre-malignant lesions and in oral squamous cell carcinoma. Carcinogenesis 2020; 41:1553-1564. [PMID: 32115621 PMCID: PMC7896111 DOI: 10.1093/carcin/bgaa019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 02/11/2020] [Accepted: 02/25/2020] [Indexed: 12/18/2022] Open
Abstract
Oral squamous cell carcinomas (OSCCs) are the most common cancers of the oral cavity, but the molecular mechanisms driving OSCC carcinogenesis remain unclear. Our group previously established a murine OSCC model based on a 10-week carcinogen [4-nitroquinoline 1-oxide (4-NQO)] treatment. Here we used K14CreERTAM;Rosa26LacZ mice to perform lineage tracing to delineate the mutational profiles in clonal cell populations resulting from single, long-lived epithelial stem cells, here called LacZ+ stem cell clones (LSCCs). Using laser-capture microdissection, we examined mutational changes in LSCCs immediately after the 10-week 4-NQO treatment and >17 weeks after 4-NQO treatment. We found a 1.8-fold ±0.4 (P = 0.009) increase in single-nucleotide variants and insertions/deletions (indels) in tumor compared with pre-neoplastic LSCCs. The percentages of indels and of loss of heterozygosity events were 1.3-fold±0.3 (P = 0.02) and 2.2-fold±0.7 (P = 0.08) higher in pre-neoplastic compared with tumor LSCCs. Mutations in cell adhesion- and development-associated genes occurred in 83% of the tumor LSCCs. Frequently mutated genes in tumor LSCCs were involved in planar cell polarity (Celsr1, Fat4) or development (Notch1). Chromosomal amplifications in 50% of the tumor LSCCs occurred in epidermal growth factor receptor, phosphoinositide 3-kinase and cell adhesion pathways. All pre-neoplastic and tumor LSCCs were characterized by key smoking-associated changes also observed in human OSCC, C>A and G>T. DeconstructSigs analysis identified smoking and head and neck cancer as the most frequent mutational signatures in pre-neoplastic and tumor LSCCs. Thus, this model recapitulates a smoking-associated mutational profile also observed in humans and illustrates the role of LSCCs in early carcinogenesis and OSCCs.
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Affiliation(s)
- Marta Melis
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Tuo Zhang
- Caryl and Israel Englander Institute for Precision Medicine, New York, NY, USA
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York, NY, USA
| | - Theresa Scognamiglio
- Pathology and Laboratory Medicine, Cornell University Joan and Sanford I Weill Medical College, New York, NY, USA
| | - Lorraine J Gudas
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Weill Cornell Graduate School of Biomedical Sciences, New York, NY, USA
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19
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Duclos GE, Teixeira VH, Autissier P, Gesthalter YB, Reinders-Luinge MA, Terrano R, Dumas YM, Liu G, Mazzilli SA, Brandsma CA, van den Berge M, Janes SM, Timens W, Lenburg ME, Spira A, Campbell JD, Beane J. Characterizing smoking-induced transcriptional heterogeneity in the human bronchial epithelium at single-cell resolution. Sci Adv 2019; 5:eaaw3413. [PMID: 31844660 PMCID: PMC6905872 DOI: 10.1126/sciadv.aaw3413] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
The human bronchial epithelium is composed of multiple distinct cell types that cooperate to defend against environmental insults. While studies have shown that smoking alters bronchial epithelial function and morphology, its precise effects on specific cell types and overall tissue composition are unclear. We used single-cell RNA sequencing to profile bronchial epithelial cells from six never and six current smokers. Unsupervised analyses led to the characterization of a set of toxin metabolism genes that localized to smoker ciliated cells, tissue remodeling associated with a loss of club cells and extensive goblet cell hyperplasia, and a previously unidentified peri-goblet epithelial subpopulation in smokers who expressed a marker of bronchial premalignant lesions. Our data demonstrate that smoke exposure drives a complex landscape of cellular alterations that may prime the human bronchial epithelium for disease.
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Affiliation(s)
- Grant E. Duclos
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Vitor H. Teixeira
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK
| | - Patrick Autissier
- Boston University Flow Cytometry Core Facility, Boston University School of Medicine, Boston, MA, USA
| | - Yaron B. Gesthalter
- Department of Medicine, University of California San Francisco School of Medicine, San Francisco, CA, USA
| | - Marjan A. Reinders-Luinge
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
| | - Robert Terrano
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Yves M. Dumas
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Gang Liu
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Sarah A. Mazzilli
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Corry-Anke Brandsma
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
| | - Maarten van den Berge
- University of Groningen, University Medical Center Groningen, Department of Pulmonary Diseases, Groningen, Netherlands
| | - Sam M. Janes
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK
- Department of Thoracic Medicine, University College London Hospital, London, UK
| | - Wim Timens
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
| | - Marc E. Lenburg
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Avrum Spira
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
- Johnson & Johnson Innovation, Cambridge, MA, USA
| | - Joshua D. Campbell
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Jennifer Beane
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
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20
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Shimizu T, Sohn Y, Choi E, Petersen CP, Prasad N, Goldenring JR. Decrease in MiR-148a Expression During Initiation of Chief Cell Transdifferentiation. Cell Mol Gastroenterol Hepatol 2019; 9:61-78. [PMID: 31473306 PMCID: PMC6881610 DOI: 10.1016/j.jcmgh.2019.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 02/07/2023]
Abstract
Gastric chief cells differentiate from mucous neck cells and develop their mature state at the base of oxyntic glands with expression of secretory zymogen granules. After parietal cell loss, chief cells transdifferentiate into mucous cell metaplasia, designated spasmolytic polypeptide-expressing metaplasia (SPEM), which is considered a candidate precursor of gastric cancer. We examined the range of microRNA (miRNA) expression in chief cells and identified miRNAs involved in chief cell transdifferentiation into SPEM. Among them, miR-148a was strongly and specifically expressed in chief cells and significantly decreased during the process of chief cell transdifferentiation. Interestingly, suppression of miR-148a in a conditionally immortalized chief cell line induced up-regulation of CD44 variant 9 (CD44v9), one of the transcripts expressed at an early stage of SPEM development, and DNA methyltransferase 1 (Dnmt1), an established target of miR-148a. Immunostaining analyses showed that Dnmt1 was up-regulated in SPEM cells as well as in chief cells before the emergence of SPEM in mouse models of acute oxyntic atrophy using either DMP-777 or L635. In the cascade of events that leads to transdifferentiation, miR-148a was down-regulated after acute oxyntic atrophy either in xCT knockout mice or after sulfasalazine inhibition of xCT. These findings suggest that the alteration of miR-148a expression is an early event in the process of chief cell transdifferentiation into SPEM.
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Affiliation(s)
- Takahiro Shimizu
- Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoojin Sohn
- Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Eunyoung Choi
- Nashville VA Medical Center, Nashville, Tennessee; Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Christine P Petersen
- Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Nripesh Prasad
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama
| | - James R Goldenring
- Nashville VA Medical Center, Nashville, Tennessee; Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
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21
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Dokkaew A, Punvittayagul C, Insuan O, Limtrakul Dejkriengkraikul P, Wongpoomchai R. Protective Effects of Defatted Sticky Rice Bran Extracts on the Early Stages of Hepatocarcinogenesis in Rats. Molecules 2019; 24:molecules24112142. [PMID: 31174320 PMCID: PMC6600176 DOI: 10.3390/molecules24112142] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 05/26/2019] [Accepted: 06/04/2019] [Indexed: 12/31/2022] Open
Abstract
Use of natural products is one strategy to lessen cancer incidence. Rice bran, especially from colored rice, contains high antioxidant activity. Cancer chemopreventive effects of hydrophilic purple rice bran extract (PRBE) and white rice bran extract (WRBE) on carcinogen-induced preneoplastic lesion formation in livers of rats were investigated. A 15-week administration of PRBE and WRBE did not induce hepatic glutathione S-transferase placental form (GST-P) positive foci formation as the biomarker of rat hepatocarcinogenesis. PRBE and WRBE at 500 mg/kg body weight significantly decreased number and size of GST-P positive foci in diethylnitrosamine (DEN)-initiated rats. The number of proliferating nuclear antigen positive hepatocytes were also reduced in preneoplastic lesions in both PRBE and WRBE fed DEN-treated rats. Notably, the inhibitory effect on GST-P positive foci formation induced by DEN during the initiation stage was found only in rats treated by PRBE for five weeks. Furthermore, PRBE attenuated the expression of proinflammatory cytokines involving genes including TNF-α, iNOS, and NF-κB. PBRE contained a higher number of anthocyanins and other phenolic compounds and vitamin E. PRBE might protect DEN-induced hepatocarcinogenesis in rats via attenuation of cellular inflammation and cell proliferation. Anthocyanins and other phenolic compounds, as well as vitamin E, might play a role in cancer chemopreventive activity in rice bran extract.
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Affiliation(s)
- Aphisit Dokkaew
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Charatda Punvittayagul
- Research Affairs, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand.
- Functional Food Research Center for Well-being, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Orapin Insuan
- Department of Medical Technology, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand.
| | - Pornngarm Limtrakul Dejkriengkraikul
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Anticarcinogenesis and Apoptosis Research Cluster, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Rawiwan Wongpoomchai
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Functional Food Research Center for Well-being, Chiang Mai University, Chiang Mai 50200, Thailand.
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22
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Bi YH, Han WQ, Li RF, Wang YJ, Du ZS, Wang XJ, Jiang Y. Signal transducer and activator of transcription 3 promotes the Warburg effect possibly by inducing pyruvate kinase M2 phosphorylation in liver precancerous lesions. World J Gastroenterol 2019; 25:1936-1949. [PMID: 31086462 PMCID: PMC6487376 DOI: 10.3748/wjg.v25.i16.1936] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/07/2019] [Accepted: 03/25/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Study shows that signal transducer and activator of transcription 3 (STAT3) can increase the Warburg effect by stimulating hexokinase 2 in breast cancer and upregulate lactate dehydrogenase A and pyruvate dehydrogenase kinase 1 in myeloma. STAT3 and pyruvate kinase M2 (PKM2) can also be activated and enhance the Warburg effect in hepatocellular carcinoma. Precancerous lesions are critical to human and rodent hepatocarcinogenesis. However, the underlying molecular mechanism for the development of liver precancerous lesions remains unknown. We hypothesized that STAT3 promotes the Warburg effect possibly by upregulating p-PKM2 in liver precancerous lesions in rats.
AIM To investigate the mechanism of the Warburg effect in liver precancerous lesions in rats.
METHODS A model of liver precancerous lesions was established by a modified Solt-Farber method. The liver pathological changes were observed by HE staining and immunohistochemistry. The transformation of WB-F344 cells induced with N-methyl-N’-nitro-N-nitrosoguanidine and hydrogen peroxide was evaluated by the soft agar assay and aneuploidy. The levels of glucose and lactate in the tissue and culture medium were detected with a spectrophotometer. The protein levels of glutathione S-transferase-π, proliferating cell nuclear antigen (PCNA), STAT3, and PKM2 were examined by Western blot and immunofluorescence.
RESULTS We found that the Warburg effect was increased in liver precancerous lesions in rats. PKM2 and p-STAT3 were upregulated in activated oval cells in liver precancerous lesions in rats. The Warburg effect, p-PKM2, and p-STAT3 expression were also increased in transformed WB-F344 cells. STAT3 activation promoted the clonal formation rate, aneuploidy, alpha-fetoprotein expression, PCNA expression, G1/S phase transition, the Warburg effect, PKM2 phosphorylation, and nuclear translocation in transformed WB-F344 cells. Moreover, the Warburg effect was inhibited by stattic, a specific inhibitor of STAT3, and further reduced in transformed WB-F344 cells after the intervention for PKM2.
CONCLUSION The Warburg effect is initiated in liver precancerous lesions in rats. STAT3 activation promotes the Warburg effect by enhancing the phosphorylation of PKM2 in transformed WB-F344 cells.
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Affiliation(s)
- Yang-Hui Bi
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Wen-Qi Han
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Ruo-Fei Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Yun-Jiao Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Zun-Shu Du
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Xue-Jiang Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Ying Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
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23
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Al-Eryani L, Jenkins SF, States VA, Pan J, Malone JC, Rai SN, Galandiuk S, Giri AK, States JC. miRNA expression profiles of premalignant and malignant arsenic-induced skin lesions. PLoS One 2018; 13:e0202579. [PMID: 30114287 PMCID: PMC6095593 DOI: 10.1371/journal.pone.0202579] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 08/06/2018] [Indexed: 12/21/2022] Open
Abstract
Arsenic, a naturally occurring element, contaminates the drinking water of over 200 million people globally. Chronic arsenic exposure causes multiple cancers including those originating from skin, lung and bladder, and is associated with liver, kidney, and prostate cancers. Skin is the primary target organ for arsenic toxicity; chronic toxicity initially manifests as non-malignant hyperkeratoses (HK) and subsequently advances to malignant lesions, including squamous cell carcinoma (SCC) and basal cell carcinoma (BCC). In this study, we evaluate the miRNA expression profiles of premalignant (3 HK) and malignant (3 BCC and 3 SCC) skin lesions from individuals chronically exposed to high levels of arsenic (59–172 ppb) in their drinking water in West Bengal, India. The lesions were histologically complex requiring histopathologic identification of keratinocytes to be isolated for RNA analyses. Keratinocytes were harvested using Laser Capture Microdissection and miRNA expression profiles were determined using TaqMan® Array Human MiRNA A Card v2.0. Thirty-five miRNAs were differentially expressed among the three lesion types analyzed. Two miRNAs (miR-425-5p and miR-433) were induced in both BCC and SCC relative to HK indicating their association with malignancy. Two other miRNAs (miR-184 and miR-576-3p) were induced in SCC relative to both BCC and HK suggesting selective induction in tumors capable of metastasis. Six miRNAs (miR-29c, miR-381, miR-452, miR-487b, miR-494 and miR-590-5p) were selectively suppressed in BCC relative to both SCC and HK. In conclusion, the differential miRNA expression was both phenotype- and stage-related. These miRNAs are potential biomarkers and may serve as therapy targets for arsenic-induced internal tumors.
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Affiliation(s)
- Laila Al-Eryani
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States of America
| | - Samantha F. Jenkins
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States of America
| | - Vanessa A. States
- Price Institute of Surgical Research, University of Louisville, Louisville, KY, United States of America
| | - Jianmin Pan
- Biostatistics Shared Facility, James Graham Brown Cancer Center, University of Louisville, Louisville, KY, United States of America
| | - Janine C. Malone
- Department of Medicine, University of Louisville, Louisville, KY, United States of America
| | - Shesh N. Rai
- Biostatistics Shared Facility, James Graham Brown Cancer Center, University of Louisville, Louisville, KY, United States of America
- Department of Bioinformatics and Biostatistics, University of Louisville, Louisville, KY, United States of America
| | - Susan Galandiuk
- Price Institute of Surgical Research, University of Louisville, Louisville, KY, United States of America
| | - Ashok K. Giri
- Molecular Genetics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - J. Christopher States
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States of America
- * E-mail:
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24
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Suen AA, Jefferson WN, Williams CJ, Wood CE. Differentiation Patterns of Uterine Carcinomas and Precursor Lesions Induced by Neonatal Estrogen Exposure in Mice. Toxicol Pathol 2018; 46:574-596. [PMID: 29895210 PMCID: PMC6027618 DOI: 10.1177/0192623318779326] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Developmental exposure to estrogenic chemicals is an established risk factor for cancer of the female reproductive tract. This increase in risk has been associated with disruption of normal patterns of cellular differentiation during critical stages of morphogenesis. The goal of this study was to document uterine epithelial phenotypes over time following neonatal treatment with the synthetic estrogen diethylstilbestrol (DES) or the soy phytoestrogen genistein (GEN) in female CD-1 mice. Both DES and GEN induced three distinct populations of abnormal endometrial epithelial cells: luminal (SIX1+/P63-/CK14-/CK18+), basal (SIX1+/P63+/CK14+/CK18-), and mixed/bipotential (SIX1+/P63-/CK14+/CK18+), which were all established by early adulthood. In older animals, DES and GEN resulted in uterine carcinomas with mixed glandular, basal, and squamous cell elements. All carcinomas were composed largely of the three abnormal cell types. These findings identify novel epithelial differentiation patterns in the uterus and support the idea that disruption of cellular programming in early development can influence cancer risk later in life.
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Affiliation(s)
- Alisa A. Suen
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
- Oak Ridge Institute for Science and Education (ORISE) participant in the Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Wendy N. Jefferson
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Carmen J. Williams
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Charles E. Wood
- Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
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25
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Cai T, Zhang C, Zhao Z, Li S, Cai H, Chen X, Cai D, Liu W, Yan Y, Xie K, Pan H, Zeng X. The gastric mucosal protective effects of astragaloside IV in mnng-induced GPL rats. Biomed Pharmacother 2018; 104:291-299. [PMID: 29775897 DOI: 10.1016/j.biopha.2018.04.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 12/15/2022] Open
Abstract
Gastric Cancer is one of the most common types of cancer. And the occurrence of gastric carcinoma is an evolutionary histopathological stage. As a result, further research of GPL, which is a borderline of gastric cancer, is indispensable for preventing the formation and development of gastric carcinoma. Several studies have demonstrated a correlation between the expression of autophagy, apoptosis and Gastric cancer (GC). However, the effects of autophagy and apoptosis on human gastric cancer progression, particularly on gastric precancerous lesions (GPL), have not totally been investigated. At present, Astragaloside IV(AS-IV) is a saponin purified from Astragalus membranaceous Bge, a traditional Chinese herb that has been widely used for more than 2000 y in the treatment of cancer, cardiovascular and immune disorders. This study was designed to investigate the mechanism of AS-IV protecting gastric mucosa in N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-induced GPL rats. The lesions of GIM and GED were significantly ameliorated compared with the model rats, especially crowded tubular glandular and back-to-back tubular structure, which were the dangerous borderline between GPL and GC. Western Blot analysis showed that the ratio of Bcl-2/Bax and the protein expression of Bcl-XL, p53, Beclin1, p62, ATG5 and ATG12 were decreased and the level of Caspase3 was increased in the group of AS-IV compared with the model group; RT-PCR analysis showed that the gene expression Ambra1, Beclin1, ATG5, LC3 and p62 were decreased in the group of AS-IV compared with the model group. This research manifested that the occurrence of gastric cancer was preceded by a prolonged precancerous stage, which could be ameliorated by the AS-IV. Meanwhile, the mild and moderate stage of precancerous lesions is similar with gastric adenocarcinoma in critical biological processes, including inflammation, cell proliferation, differentiation. But this lesion is very different from cancer, because it does not appear obvious invasion and malignant lesions in this pathologic stag. Further, AS-IV could regulate p53 expression to activate the Ambra1/Beclin1 complex in GPL, and it will protect the gastric mucosal injury, prevent and cure gastric mucosal atrophy, intestinal metaplasia and atypical hyperplastic lesions. It provided a potential therapeutic strategy in reversing intestinal metaplasia and dysplasia of gastric precancerous lesions and protecting the gastric mucosa in GPL rats.
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Affiliation(s)
- Tiantian Cai
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Chengzhe Zhang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Ziming Zhao
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Siyi Li
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Haobin Cai
- Department of Neurology & Psychology, Shenzhen Hospital Affiliated to Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Xiaodong Chen
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Dake Cai
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Wei Liu
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yan Yan
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Kaifeng Xie
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Huafeng Pan
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
| | - Xiaohui Zeng
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China.
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Moulahoum H, Boumaza BMA, Ferrat M, Nagy AL, Olteanu DE, Bounaama A, Clichici S. Aberrant crypt foci are regionally affected by zinc treatment in a 1,2-dimethylhydrazine induced colon carcinogenesis model. J Trace Elem Med Biol 2018; 47:21-30. [PMID: 29544804 DOI: 10.1016/j.jtemb.2018.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 01/23/2018] [Accepted: 01/23/2018] [Indexed: 01/19/2023]
Abstract
Zinc is a trace element widely known for its marked antioxidant properties. To gain more insight into the site- and time- specific mechanisms by which it induces chemoprevention, this study was elaborated over a pre-cancerous model of colon carcinogenesis. Colon cancer was induced by 1,2-dimethylhydrazine (DMH) in mice (20 mg/kg for 2 weeks) and groups of animals were supplemented with or without zinc sulfate (ZnSO4, 200 mg/L) in drinking water for 4, 10 or 14 weeks. Colon tissues were collected for pathological observation, analyzing aberrant crypt (AC) and aberrant crypt foci (ACF) formations, multiplicity and distribution. Similarly, histological assessment and mucin production, as well as oxidative stress markers estimation was performed for the different groups. Results showed a significant increase in ACF and AC numbers, ACF multiplicity and demonstrated stronger distal occurrence than in the proximal after DHM administration. Histopathological analysis presented marked structural alterations and mucin loss in the distal than the proximal colons. A significant increase in myeloperoxidase (MPO), nitric oxide (NO), L-ornithine and malondialdehyde (MDA) levels was observed followed by a significant decrease in antioxidant markers (superoxide dismutase (SOD), catalase (CAT) and reduced glutathione (GSH)). Oral ZnSO4 supplementation (continuous or partial) induced significant decrease in ACF, AC numbers and multiplicity, restored histological architecture and mucin production, and a significant decrease in proinflammatory markers while it reduced antioxidants to normal levels. From this study, insight was obtained on the use of ZnSO4 as a chemopreventive agent and shed light on its potential, as a supplement in nutraceutical approaches.
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Affiliation(s)
- Hichem Moulahoum
- Laboratory of Cell and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria; Biochemistry Department, Faculty of Sciences, Ege University, Izmir, Turkey.
| | - Belkacem Mohamed Amine Boumaza
- Laboratory of Cell and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Meriem Ferrat
- Laboratory of Cell and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Andras-Laszlo Nagy
- Pathology Department, Universitatea de ştiinţe Agricole şi Medicinǎ Veterinarǎ (USAMV), Cluj-Napoca, Romania
| | - Diana Elena Olteanu
- Physiology Department, University of Medicine and Pharmacy "Iuliu Haţieganu", Cluj-Napoca, Romania
| | - Abdelkader Bounaama
- Laboratory of Cell and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Simona Clichici
- Physiology Department, University of Medicine and Pharmacy "Iuliu Haţieganu", Cluj-Napoca, Romania
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Basolo F, Fontanini G, Squartini F. Morphology and Progression of Preneoplastic Changes in Methylcholanthrene-Induced Mouse Mammary Tumorigenesis. Tumori 2018; 71:1-11. [PMID: 3984042 DOI: 10.1177/030089168507100101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Susceptible BALB/c virgin female mice were treated with 3-methylcholanthrene in almond oil (0.5 %) by skin painting and killed at monthly intervals. The mammary glands were prepared as whole mounts for stereoscopic study of the glandular tree wtih removal of any focal change for histology. The results showed a marked disarrangement in the architecture of the glandular tree, a prevalent ductal tree, and an overcrowding of ducts. Focal hyperplastic changes were frequently observed, including hyperplastic alveolar nodules, hyperplastic ductal nodules, noduloids and intraductal epithelial growths, and their respective rates of malignant transformation observed at histology were 22 %, 15 %, 7 % and 50 %. Data suggest a different weight of these preneoplastic changes as sources of malignant transformation and a prevalent ductal origin of the methylcholanthrene-induced neoplasms.
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Abstract
The results of an electron microscopic study of the changes in hepatocytes induced by chronic intoxication with thioacetamide are reported. During the poisoning aspecific toxic changes are intermingled with progressive, preneoplastic ones. The main cell sub-populations identified are: 1) large hepatocytes with smooth endoplasmic reticulum (SER) hypertrophy, with or without rough endoplasmic reticulum (RER) neoformation and glycogen storage, which is starvation resistant; 2) smaller hepatocytes, where RER hypertrophy and ribosome accumulation are the prominent features. Such a pattern persists for months. After the withdrawal of the drug most of the cell changes disappear. However, during this time a simplification of the liver structure and cell composition takes place, allowing a sequence of cell events which seem relevant for establishment of neoplastic progression. The SER-hypertrophied cell appears first and gives rise, via several intermediate stages, to the RER-hypertrophied one, which is believed to play a key role as the ultimate precursor of cancer cells.
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Wang CC, Yuan JR, Wang CF, Yang N, Chen J, Liu D, Song J, Feng L, Tan XB, Jia XB. Anti-inflammatory Effects of Phyllanthus emblica L on Benzopyrene-Induced Precancerous Lung Lesion by Regulating the IL-1β/miR-101/Lin28B Signaling Pathway. Integr Cancer Ther 2017; 16:505-515. [PMID: 27562754 PMCID: PMC5739133 DOI: 10.1177/1534735416659358] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/25/2016] [Accepted: 06/03/2016] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Phyllanthus emblica L (PEL), a well-known medical plant, has been used in Asian countries for a long time. Increasing evidence suggests that it can prevent the tumorigenesis of cancer associated with nonresolving inflammation. However, the possible anti-inflammatory mechanism responsible for preventing tumorigenesis of precancerous lung lesions is not well elucidated. MATERIALS AND METHODS Male A/J mice were randomly divided into 5 groups with 10 mice in each group: (1) blank group (saline), (2) benzo(a)pyrene [B(a)P] group, (3) and (4) B(a)P + PEL (5 g/kg/d, 10 g/kg/d, administered by gavage), (5) B(a)P + celecoxib (30 mg/kg/d, administered by gavage). Nodes on the lung surface were observed and calculated. The levels of macrophage inflammatory protein (MIP-2), tumor necrosis factor-α (TNF-α), interleukin (IL)-6, and IL-1β were detected by enzyme-linked immunosorbent assay (ELISA) kits. Cyclo-oxygenase-2 (COX-2), hypoxia-inducible factor-1 (HIF-α), IL-1β, miR-101, and Lin28B protein levels were evaluated by immunohistochemistry and Western blotting. RESULTS PEL extract treatment significantly reduced the number of nodes on the lung surface and attenuated B(a)P-induced levels of proinflammatory cytokines MIP-2, TNF-α, IL-6, and IL-1β in lung tissue. The protein expressions of COX-2 and HIF-α were significantly decreased by the treatment of PEL. In addition, both PEL extract and celecoxib markedly upregulate the expression of miR-101 while downregulating IL-1β and Lin28B levels. CONCLUSION Our study indicated that treatment with PEL extract can not only protect the lung from inflammatory injury but effectively prevent precancerous lung lesions through regulating the IL-1β/miR-i101/Lin28B signaling pathway.
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Affiliation(s)
- Cheng-cheng Wang
- Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Jia-rui Yuan
- Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Chun-fei Wang
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
- Anhui University of Chinese Medicine, Hefei, China
| | - Nan Yang
- Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Juan Chen
- Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Dan Liu
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Jie Song
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Liang Feng
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
- Third School of Clinical Medical of Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Xiao-bin Tan
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
- Third School of Clinical Medical of Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
| | - Xiao-bin Jia
- Jiangsu Provincial Academy of Chinese Medicine, Jiangsu Nanjing, P R China
- Third School of Clinical Medical of Nanjing University of Chinese Medicine, Jiangsu Nanjing, P R China
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Neill B, Ryser T, Neill J, Aires D, Rajpara A. A patient case highlighting the myriad of cutaneous adverse effects of prolonged use of hydroxyurea. Dermatol Online J 2017; 23:13030/qt8h64503t. [PMID: 29447639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 12/11/2017] [Indexed: 06/08/2023] Open
Abstract
BACKGROUND Hydroxyurea is an antimetabolite primarily used to treat myeloproliferative disorders, and chronic treatment is associated with many cutaneous adverse effects ranging in severity from ichthyosis to aggressive nonmelanoma skin cancer. CASE PRESENTATION We report a 67-year-oldman with a history of polycythemia vera who was referred for management of progressively worsening dorsal hand lesions. The patient presented withhyperpigmentation, ichthyosis, plantar keratoderma, dermatomyositis-like eruptions, two squamous cell carcinomas, and actinic keratoses. The adversereactions observed were acknowledged to be related to chronic hydroxyurea use. The patient underwent Mohs excision of the squamous cell carcinomas and thehydroxyurea was promptly discontinued; subsequent cutaneous improvement of the dermatomyositislike lesions ensued. Another clinically suspicious aggressive squamous cell carcinoma was suspected and the patient was referred to the plastic surgery department for complete excision because of the size of the lesion. The patient remains on periodic dermatology follow up. CONCLUSIONS We report a case that exemplifies the cutaneous adverse effects of chronic hydroxyurea therapy. Although many cases improve after drug discontinuation, strict photoprotection and ongoing surveillance are indicated given the recently proposed premalignant potential of dermatomyositis-like eruptions and the aggressive nature of hydroxyurea-induced nonmelanoma skin cancer.
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Affiliation(s)
| | | | | | | | - Anand Rajpara
- Division of Dermatology, University of Kansas Medical Center, Kansas City, Kansas.
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Horng CT, Huang CW, Yang MY, Chen TH, Chang YC, Wang CJ. Nelumbo nucifera leaf extract treatment attenuated preneoplastic lesions and oxidative stress in the livers of diethylnitrosamine-treated rats. Environ Toxicol 2017; 32:2327-2340. [PMID: 28804948 DOI: 10.1002/tox.22434] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/26/2017] [Accepted: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Lotus (Nelumbo nucifera Gaertn) possesses antioxidant, hepatoprotective, and anticancer potential. This study determined the protective role of aqueous extract from Nelumbo nucifera leaves (NLE) against N-diethylnitrosamine (DEN)-induced oxidative stress and hepatocellular carcinogenesis in a sample of Sprague-Dawley rats. NLE was fed orally to rats in which hepatic carcinoma was induced with DEN for 12 weeks. Five groups of 12 rats each were used for the study: Group I (control group) rats received distilled water; Group II rats were induced with DEN; Group III rats were induced with DEN and cotreated with 0.5% NLE; Group IV rats were induced with DEN and cotreated with 1.0% NLE; and Group V rats were induced with DEN and cotreated with 2.0% NLE. Clinical chemistry, organ weight, inflammatory marker, protein expression, enzyme, and antioxidant analyses were conducted. NLE administration to rats resulted in significantly decreased levels of serum alanine aminotransferase, aspartate aminotransferase, and albumin, which is indicative of hepatocellular damage, compared with the control group. DEN-induced oxidative stress was inhibited by NLE and this inhibition was paralleled by decreased lipid peroxides and increased glutathione transferase, superoxide dismutase, catalase, and glutathione peroxidase activity in liver tissues. The status of nonenzymatic antioxidants, such as reduced glutathione, was also found to be increased in NLE-administered rats. Furthermore, NLE decreased tumor size, hepatic Rac1, PKCα, and GSTπ expressions compared with the DEN-only group. Thus, supplementation of NLE reduced the adverse changes that occur because of liver cancer. These results prove that NLE protects against liver carcinogenesis induced because of treatment with DEN through blocking lipid peroxidation, hepatic cell damage, and enhancing the antioxidant defense system.
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Affiliation(s)
- Chi-Ting Horng
- Department of Ophthalmology, Kaohsiung Armed Forces General Hospital, Kaohsiung City, 802, Taiwan
- Institute of Biochemistry, Microbiology and Immunology, Medical College, Chung Shan Medical University, Taichung City, 402, Taiwan
| | - Chien-Wei Huang
- Division of Gastroenterology, Kaohsiung Armed Forces General Hospital, Kaohsiung City, 802, Taiwan
| | - Mon-Yuan Yang
- Institute of Biochemistry, Microbiology and Immunology, Medical College, Chung Shan Medical University, Taichung City, 402, Taiwan
| | - Tzu-Hsin Chen
- Institute of Biochemistry, Microbiology and Immunology, Medical College, Chung Shan Medical University, Taichung City, 402, Taiwan
| | - Yun-Ching Chang
- Institute of Biochemistry, Microbiology and Immunology, Medical College, Chung Shan Medical University, Taichung City, 402, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung City, 402, Taiwan
| | - Chau-Jong Wang
- Institute of Biochemistry, Microbiology and Immunology, Medical College, Chung Shan Medical University, Taichung City, 402, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung City, 402, Taiwan
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Hard GC, Seely JC. Recommendations for the Interpretation of Renal Tubule Proliferative Lesions Occurring in Rat Kidneys with Advanced Chronic Progressive Nephropathy (CPN). Toxicol Pathol 2017; 33:641-9. [PMID: 16207638 DOI: 10.1080/01926230500299716] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
There is little guidance in the literature on the spectrum of proliferative tubule lesions in the kidneys of aging rats affected with spontaneously occurring, chronic progressive nephropathy (CPN), or their interpretation. Through accessing 2-year carcinogenicity studies in male F344 rats held in the Archives of the National Toxicology Program, NIEHS, a large number of cases of advanced CPN have been surveyed histopathologically for proliferative tubule lesions, and an attempt made to provide guidelines for discrimination of lesions common to the CPN process, from those representing precursors of neoplasia. Several proliferative lesions were identified as common in advanced CPN with no apparent evidence supporting a role in renal tubule carcinogenesis. It is recommended that these lesions be viewed generically as CPN tubule profiles, and not recorded separately from the diagnosis of CPN. Criteria were developed to distinguish these CPN-associated lesions from atypical tubule hyperplasia, a precursor of adenoma, both of which were also represented in this survey of advanced CPN.
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Affiliation(s)
- Gordon C Hard
- National Toxicology Program Archives, Research Triangle Park, North Carolina 27709, USA.
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Shwter AN, Abdullah NA, Alshawsh MA, El-Seedi HR, Al-Henhena NA, Khalifa SAM, Abdulla MA. Chemopreventive effect of Phaleria macrocarpa on colorectal cancer aberrant crypt foci in vivo. J Ethnopharmacol 2016; 193:195-206. [PMID: 27492327 DOI: 10.1016/j.jep.2016.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 07/26/2016] [Accepted: 08/01/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Natural products are important ingredients for pharmaceutical applications specifically new entities for treating cancer and other diseases. Phaleria macrocarpa is native of Indonesia and considered as a prolific source of bioactive substances useful for chemoprevention. AIM OF THE STUDY To investigate the chemopreventive properties of Phaleria macrocarpa on azoxymethane (AOM)-induced aberrant crypt foci (ACF) in rats. METHODS The biological activities of the ethanol extract of P. macrocarpa fruits were evaluated both in vitro and in vivo. First the extract was investigated for its in vitro antioxidant activity by the total phenolic content and ferric reducing antioxidant power assay. Then the chemopreventive effect of P. macrocarpa was performed on AOM-induced aberrant crypt foci as colorectal carcinoma model in rats. RESULT the crude ethanolic extract of P. macrocarpa has high antioxidant activity and modulated the oxidative stress as proved by the up-regulation of glutathione-s-transferase and superoxide dismutase. Immunohistochemical staining of the treated sections showed overexpression of PCNA and Bax, reduced crypt sizes and numbers, indicating the characteristic feature of apoptotic cancer cells. PCNA is a landmark of cell damage and turn-over and can be associated with clinical cancer mutation. The most potent doses were 250mg/kg and 500mg/kg as compared to 35mg/kg 5-fluorouracil. CONCLUSION In this sense, the potential modulation of the colorectal pathophysiological pathway by P. macrocarpa natural compounds mostly flavonoids offer a great possibility for the discovery of new leads towards the colorectal cancer.
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Affiliation(s)
- Abdrabuh N Shwter
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Nor Azizan Abdullah
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Mohammed A Alshawsh
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Hesham R El-Seedi
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-75 123, Uppsala, Sweden.
| | - Nawal A Al-Henhena
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Shaden A M Khalifa
- Department of Experimental Hematology, Karolinska University Hospital, SE-141 86 Stockholm, Sweden.
| | - Mahmood A Abdulla
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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Gamal-Eldeen AM, Moustafa D, El-Daly SM, El-Hussieny EA, Saleh S, Khoobchandani M, Bacon KL, Gupta S, Katti K, Shukla R, Katti KV. Photothermal therapy mediated by gum Arabic-conjugated gold nanoparticles suppresses liver preneoplastic lesions in mice. J Photochem Photobiol B 2016; 163:47-56. [PMID: 27533849 DOI: 10.1016/j.jphotobiol.2016.08.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 08/05/2016] [Accepted: 08/08/2016] [Indexed: 11/18/2022]
Abstract
This study validates the utility of Gum Arabic-conjugated gold nanoparticles (GA-AuNPs) and laser to induce photothermal inhibition of hepatocarcinogenesis, via employing a diethylnitrosamine (DEN)-mediated hepatocellular carcinoma model. This work included both of in vitro and in vivo studies; to investigate the GA-AuNPs cytotoxicity and phototoxicity in hepatic cell line; to delineate the GA-AuNPs therapeutic efficiency in DEN-induced preneoplastic lesions (PNLs) in the liver of Balb-C mice. The therapeutic effects of GA-AuNPs on the mediators of apoptosis, inflammation, and tumor initiation, as well as the histopathological changes in preneoplastic liver have been investigated. Our results infer that GA-AuNPs in combination with laser irradiation led to a significant reduction in the cell viability and in histone deacetylase activity in hepatocarcinoma HepG2 cells. In chemically-induced PNLs mice model our results have demonstrated that GA-AuNPs, with or without laser irradiation, induced cancer cell apoptosis through the activation of death receptors DR5 and caspase-3 and inhibited both of the PNLs incidence and the initiation marker (placental glutathione S-transferase; GST-P). The laser-stimulated GA-AuNPs significantly reduced the tumor necrosis factor-α levels. In summary, GA-AuNPs with laser treatment inhibited liver PNLs via the induction of the extrinsic apoptosis pathway and the inhibition of inflammation.
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Affiliation(s)
- Amira M Gamal-Eldeen
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt; Department of Biochemistry, National Research Centre, Cairo, Egypt.
| | - Dina Moustafa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, October 6 University, 6 October City, Giza, Egypt
| | - Sherien M El-Daly
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt; Department of Medical Biochemistry, National Research Centre, Cairo, Egypt
| | - Enas A El-Hussieny
- Zoology Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Samira Saleh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Menka Khoobchandani
- Department of Radiology, University of Missouri, Columbia, MO 65212, USA; Institute of Green Nanotechnology, University of Missouri, Columbia, MO 65212, USA
| | - Kathryn L Bacon
- Department of Radiology, University of Missouri, Columbia, MO 65212, USA; Institute of Green Nanotechnology, University of Missouri, Columbia, MO 65212, USA
| | - Sagar Gupta
- Department of Radiology, University of Missouri, Columbia, MO 65212, USA; Institute of Green Nanotechnology, University of Missouri, Columbia, MO 65212, USA; Department of Physics, University of Missouri, Columbia, MO 65212, USA; Department of Bioengineering, University of Missouri, Columbia, MO 65211, USA
| | - Kavita Katti
- Department of Radiology, University of Missouri, Columbia, MO 65212, USA; Institute of Green Nanotechnology, University of Missouri, Columbia, MO 65212, USA
| | - Ravi Shukla
- Centre for Advanced Materials and Industrial Chemistry; School of Applied Sciences; Health Innovation Research Institute; RMIT University, Australia
| | - Kattesh V Katti
- Department of Radiology, University of Missouri, Columbia, MO 65212, USA; Institute of Green Nanotechnology, University of Missouri, Columbia, MO 65212, USA; Research Reactor, University of Missouri, Columbia, MO 65212, USA; Department of Physics, University of Missouri, Columbia, MO 65212, USA; Department of Bioengineering, University of Missouri, Columbia, MO 65211, USA
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Weber SN, Bohner A, Dapito DH, Schwabe RF, Lammert F. TLR4 Deficiency Protects against Hepatic Fibrosis and Diethylnitrosamine-Induced Pre-Carcinogenic Liver Injury in Fibrotic Liver. PLoS One 2016; 11:e0158819. [PMID: 27391331 PMCID: PMC4938399 DOI: 10.1371/journal.pone.0158819] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 06/22/2016] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The development of hepatocellular carcinoma (HCC) is a common consequence of advanced liver fibrosis but the interactions between fibrogenesis and carcinogenesis are still poorly understood. Recently it has been shown that HCC promotion depends on Toll-like receptor (TLR) 4. Pre-cancerogenous events can be modelled in mice by the administration of a single dose of diethylnitrosamine (DEN), with HCC formation depending amongst others on interleukin (IL) 6 production. Mice lacking the hepatocanalicular phosphatidylcholine transporter ABCB4 develop liver fibrosis spontaneously, resemble patients with sclerosing cholangitis due to mutations of the orthologous human gene, and represent a valid model to study tumour formation in pre-injured cholestatic liver. The aim of this study was to investigate DEN-induced liver injury in TLR4-deficient mice with biliary fibrosis. METHODS ABCB4-deficient mice on the FVB/NJ genetic background were crossed to two distinct genetic backgrounds (TLR4-sufficient C3H/HeN and TLR4-deficient C3H/HeJ) for more than 10 generations. The two congenic knockout and the two corresponding wild-type mouse lines were treated with a single dose of DEN for 48 hours. Phenotypic differences were assessed by measuring hepatic collagen contents, inflammatory markers (ALT, CRP, IL6) as well as hepatic apoptosis (TUNEL) and proliferation (Ki67) rates. RESULTS Hepatic collagen accumulation is significantly reduced in ABCB4-/-:TLR4-/-double-deficient mice. After DEN challenge, apoptosis, proliferation and inflammatory markers are decreased in TLR4-deficient in comparison to TLR4-sufficient mice. When combining ABCB4 and TLR4 deficiency with DEN treatment, hepatic IL6 expression and proliferation rates are lowest in fibrotic livers from the double-deficient line. Consistent with these effects, selective digestive tract decontamination in ABCB4-/- mice also led to reduced tumor size and number after DEN. CONCLUSION This study demonstrates that liver injury upon DEN challenge depends on pre-existing fibrosis and genetic background. The generation of ABCB4-/: TLR4-/- double-deficient mice illustrates that TLR4-deficiency protects against hepatic injury in a preclinical mouse model of chronic liver disease.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/genetics
- ATP Binding Cassette Transporter, Subfamily B/metabolism
- Animals
- Carcinoma, Hepatocellular/chemically induced
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Diethylnitrosamine/toxicity
- Interleukin-6/genetics
- Interleukin-6/metabolism
- Liver Cirrhosis/chemically induced
- Liver Cirrhosis/genetics
- Liver Cirrhosis/metabolism
- Liver Cirrhosis/pathology
- Liver Neoplasms, Experimental/chemically induced
- Liver Neoplasms, Experimental/genetics
- Liver Neoplasms, Experimental/metabolism
- Liver Neoplasms, Experimental/pathology
- Mice, Knockout
- Neoplasm Proteins/deficiency
- Neoplasm Proteins/metabolism
- Precancerous Conditions/chemically induced
- Precancerous Conditions/genetics
- Precancerous Conditions/metabolism
- Precancerous Conditions/pathology
- Toll-Like Receptor 4/deficiency
- ATP-Binding Cassette Sub-Family B Member 4
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Affiliation(s)
| | - Annika Bohner
- Department of Medicine II, Saarland University Medical Center, Homburg, Germany
| | - Dianne H. Dapito
- Department of Medicine, Columbia University, New York, NY, United States of America
| | - Robert F. Schwabe
- Department of Medicine, Columbia University, New York, NY, United States of America
| | - Frank Lammert
- Department of Medicine II, Saarland University Medical Center, Homburg, Germany
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36
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Battershill JM. The Multiple Chemicals and Actions Model of carcinogenesis. A possible new approach to developing prevention strategies for environmental carcinogenesis. Hum Exp Toxicol 2016; 24:547-58. [PMID: 16323570 DOI: 10.1191/0960327105ht559oa] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The number of definite and probable human chemical carcinogens identified by IARC approaches between 1987 and June 2004 is reported to be 50 agents. However, overall, given the rapid expansion in the number of chemicals in use, the throughput of the current approach to identifying potential environmental carcinogens is low. The long-term rodent bioassay, a key part of the current approach, identifies many chemicals which eventually turn out to be irrelevant for human health with regard to cancer. A new approach is suggested which focuses on identifying the potency of environmental mixtures for induction of toxicological changes relevant to carcinogenesis (e.g., cell proliferation, chronic inflammation, inhibition of apoptosis, mutagenicity). Details regarding a suggested strategy for prioritization of mixtures are provided with more detailed information regarding mutagenicity as an end point. The long-term rodent bioassay is not included in the proposal (although it is acknowledged that it will continue to be important in premarketing regulatory schemes) for hazard identification. The Multiple Chemicals and Actions Model (MCAM) is developed. In this model the chemical mixtures in the environment act via a number of mechanisms as ‘effectors’ or ‘inhibitors’ of a multistage carcinogenic process. Identifying effectors and inhibitors of the rate-limiting step would be important for preventive strategies. Genetic polymorphisms act as modulators of effector and inhibitor mixtures. It is suggested that the MCAM model could be used in public education programmes to help inform on public health issues regarding cancer and to help avoid future scares which tend to focus on single chemicals. It is acknowledged that there would need to be basic research undertaken to generate appropriate data to support the application of the proposal before it could be used in cancer prevention strategies.
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37
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Abstract
Sulphur is an essential micronutrient required by the body in low concentrations, but its high intake can lead to a serious health hazard. Sulphur compounds are reported to induce several toxic responses in animals, but so far no reports are available on the toxic effects of elemental sulphur, following dietary supplementation. The present investigation was carried out with the aim of providing an insight into the role of dietary supplementation of sulphur on the induction of altered hepatic foci (AHF) using medium term liver bioassay in Wistar rats. Induction of AHF are early neoplastic changes in rat liver in diethylnitrosamine (DEN)-initiated and 2-acetylamino fluorene (2-AAF)-promoted hepatocarcinogenesis. The role of sulphur on induction of AHF was evaluated by the development of negative enzymatic foci for alkaline phosphatase (AlkPase), adenosine triphosphatase (ATPase), glucose-6-phosphatase (G-6-Pase) and positive foci for marker enzymes, glutamyl transferase (GGT), placental isozyme of glutathione-S transferase (GST-P). A significant dose-dependent decrease in the relative and absolute liver weight of sulphur-administered rats was recorded. Dietary supplementation of 2% and 4% sulphur significantly induces both negative and positive focal areas in terms of area and counts for AHF. However, 1% sulphur administration failed to induce AHF up to significant levels. The results thus revealed the possible tumorigenic risk associated with the high sulphur-containing diet.
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Affiliation(s)
- Annu Arora
- Environmental Carcinogenesis Division, Industrial Toxicology Research Centre, M.G. Marg PO Box No. 80, Lucknow 226 001, India
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38
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Kowalczyk P, Jaworek J, Kot M, Sokolowska B, Bielen A, Janowska B, Ciesla JM, Szparecki G, Sados B, Tudek B. Inflammation increases oxidative DNA damage repair and stimulates preneoplastic changes in colons of newborn rats. J Physiol Pharmacol 2016; 67:277-286. [PMID: 27226187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Oxidative DNA damage may be a risk factor for development of various pathologies, including malignancy. We studied inflammation triggered modulation of repair activity in the intestines of three weeks old rats injected i.p. with E.coli or S. typhimurium lipopolysaccharides (LPS) at doses of 1, 5 or 10 mg/kg. Subsequent formation in these animals of colonic preneoplastic lesions, aberrant crypt foci (ACF) was also investigated. Five days after LPS administration no differences were observed in repair rate of 1,N(6)-ethenoadenine (εA), 3,N(4)-ethenocytosine (εC) and 8-oxoguanine (8-oxoG) in intestines of these rats, as measured by the nicking assay. However a significant increase in all three repair activities was found within one and two months after S. typhimurium LPS treatment. E. coli LPS significantly increased only the 8-oxoG repair. S. typhimurium LPS stimulated mRNA transcription of pro-inflammatory proteins, lipooxygenase-12 and cyclooxygenase-2, as well as some DNA repair enzymes like AP-endonuclease (Ape1) and εC-glycosylase (Tdg). mRNA level of DNA glycosylases excising εA (MPG) and 8-oxoG (OGG1) was also increased by LPS treatment, but only at the highest dose. Transcription of all enzymes increased for up to 30 days after LPS, and subsequently decreased to the level observed before treatment, with the exception of APE1, which remained elevated even two months after LPS administration. Thus, the repair efficiency of εA, εC and 8-oxoG depends on the availability of APE1, which increases OGG1 and TDG turnover on damaged DNA, and presumably stimulates MPG. One and two months after administration of E. coli or S. typhimurium LPS, the number of aberrant crypt foci in rat colons increased in a dose and time dependent manner. Thus, inflammation stimulates the repair capacity for εA, εC and 8-oxoG, but simultaneously triggers the appearance of preneoplastic changes in the colons. This may be due to increased oxidative stress and imbalance in DNA repair.
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Affiliation(s)
- P Kowalczyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - J Jaworek
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Collegium Medicum, Cracow, Poland
| | - M Kot
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Collegium Medicum, Cracow, Poland
| | - B Sokolowska
- Department of Respiratory Research, Medical Research Center, Polish Academy of Sciences, Warsaw, Poland
| | - A Bielen
- present address: Cancer Research UK, Clare Hall Laboratories, Blanche Lane, South Mimms, United Kingdom
| | - B Janowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - J M Ciesla
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - G Szparecki
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - B Sados
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - B Tudek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland.
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39
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Saloman JL, Albers KM, Li D, Hartman DJ, Crawford HC, Muha EA, Rhim AD, Davis BM. Ablation of sensory neurons in a genetic model of pancreatic ductal adenocarcinoma slows initiation and progression of cancer. Proc Natl Acad Sci U S A 2016; 113:3078-83. [PMID: 26929329 PMCID: PMC4801275 DOI: 10.1073/pnas.1512603113] [Citation(s) in RCA: 209] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is characterized by an exuberant inflammatory desmoplastic response. The PDAC microenvironment is complex, containing both pro- and antitumorigenic elements, and remains to be fully characterized. Here, we show that sensory neurons, an under-studied cohort of the pancreas tumor stroma, play a significant role in the initiation and progression of the early stages of PDAC. Using a well-established autochthonous model of PDAC (PKC), we show that inflammation and neuronal damage in the peripheral and central nervous system (CNS) occurs as early as the pancreatic intraepithelial neoplasia (PanIN) 2 stage. Also at the PanIN2 stage, pancreas acinar-derived cells frequently invade along sensory neurons into the spinal cord and migrate caudally to the lower thoracic and upper lumbar regions. Sensory neuron ablation by neonatal capsaicin injection prevented perineural invasion (PNI), astrocyte activation, and neuronal damage, suggesting that sensory neurons convey inflammatory signals from Kras-induced pancreatic neoplasia to the CNS. Neuron ablation in PKC mice also significantly delayed PanIN formation and ultimately prolonged survival compared with vehicle-treated controls (median survival, 7.8 vs. 4.5 mo; P = 0.001). These data establish a reciprocal signaling loop between the pancreas and nervous system, including the CNS, that supports inflammation associated with oncogenic Kras-induced neoplasia. Thus, pancreatic sensory neurons comprise an important stromal cell population that supports the initiation and progression of PDAC and may represent a potential target for prevention in high-risk populations.
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MESH Headings
- Adenocarcinoma in Situ/pathology
- Adenocarcinoma in Situ/physiopathology
- Afferent Pathways
- Animals
- Animals, Newborn
- Capsaicin/administration & dosage
- Capsaicin/pharmacology
- Capsaicin/therapeutic use
- Carcinoma, Pancreatic Ductal/etiology
- Carcinoma, Pancreatic Ductal/pathology
- Carcinoma, Pancreatic Ductal/physiopathology
- Carcinoma, Pancreatic Ductal/prevention & control
- Carcinoma, Pancreatic Ductal/therapy
- Ceruletide/toxicity
- Denervation
- Disease Progression
- Female
- Ganglia, Sympathetic/physiopathology
- Genes, ras
- Humans
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Myelitis/complications
- Myelitis/genetics
- Myelitis/physiopathology
- Neoplasm Invasiveness
- Pancreas/innervation
- Pancreatic Neoplasms/etiology
- Pancreatic Neoplasms/pathology
- Pancreatic Neoplasms/physiopathology
- Pancreatic Neoplasms/prevention & control
- Pancreatic Neoplasms/therapy
- Pancreatitis/chemically induced
- Pancreatitis/complications
- Pancreatitis/physiopathology
- Precancerous Conditions/chemically induced
- Precancerous Conditions/complications
- Precancerous Conditions/physiopathology
- Sensory Receptor Cells/drug effects
- Sensory Receptor Cells/physiology
- Spinal Cord/physiopathology
- Spinothalamic Tracts/physiopathology
- Thoracic Vertebrae
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Affiliation(s)
- Jami L Saloman
- Center for Pain Research and Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Kathryn M Albers
- Center for Pain Research and Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Dongjun Li
- Comprehensive Cancer Center and Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109
| | - Douglas J Hartman
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Howard C Crawford
- Department of Internal Medicine, Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI 48109
| | - Emily A Muha
- Center for Pain Research and Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Andrew D Rhim
- Comprehensive Cancer Center and Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109;
| | - Brian M Davis
- Center for Pain Research and Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA 15261;
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40
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Emura M, Aufderheide M. Challenge for 3D culture technology: Application in carcinogenesis studies with human airway epithelial cells. ACTA ACUST UNITED AC 2016; 68:255-61. [PMID: 26951634 DOI: 10.1016/j.etp.2016.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 11/18/2022]
Abstract
Lung cancer is still one of the major intractable diseases and we urgently need more efficient preventive and curative measures. Recent molecular studies have provided strong evidence that allows us to believe that classically well-known early airway lesions such as hyperplasia, metaplasia, dysplasia and carcinoma in situ are really precancerous lesions progressing toward cancer but not necessarily transient and reversible alteration. This suggests that adequate early control of the precancerous lesions may lead to improved prevention of lung cancer. This knowledge is encouraging in view of the imminent necessity for additional experimental systems to investigate the causal mechanisms of cancers directly in human cells and tissues. There are many questions with regard to various precancerous lesions of the airways. For example, should cells, before reaching a stage of invasive carcinoma, undergo all precancerous stages such as hyperplasia or metaplasia and dysplasia, or is there any shortcut to bypass one or more of the precancerous stages? For the study of such questions, the emerging 3-dimensional (3D) cell culture technology appears to provide an effective and valuable tool. Though a great challenge, it is expected that this in vitro technology will be rapidly and reliably improved to enable the cultures to be maintained in an in vivo-mimicking state of differentiation for much longer than a period of at best a few months, as is currently the case. With the help of a "causes recombination-Lox" (Cre-lox) technology, it has been possible to trace cells giving rise to specific lung tumor types. In this short review we have attempted to assess the future role of 3D technology in the study of lung carcinogenesis.
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Affiliation(s)
- M Emura
- Cultex(®) Laboratories GmbH, Feodor-Lynen-Str. 21, 30625 Hannover, Germany.
| | - M Aufderheide
- Cultex(®) Laboratories GmbH, Feodor-Lynen-Str. 21, 30625 Hannover, Germany.
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41
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Ruetsch R, Juillerat P, Flatz A, von Elm E. [Does long-term use of proton pump inhibitors promote premalignant lesions of the gastric mucosa?]. Praxis (Bern 1994) 2016; 105:221-222. [PMID: 26886699 DOI: 10.1024/1661-8157/a002262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Roseline Ruetsch
- 1 Universitätsklinik für Viszerale Chirurgie und Medizin, Gastroenterologie, Inselspital, Universitätsspital Bern
| | - Pascal Juillerat
- 1 Universitätsklinik für Viszerale Chirurgie und Medizin, Gastroenterologie, Inselspital, Universitätsspital Bern
| | - Aline Flatz
- 2 Cochrane Schweiz, Institut universitaire de médecine sociale et préventive, Lausanne
| | - Erik von Elm
- 2 Cochrane Schweiz, Institut universitaire de médecine sociale et préventive, Lausanne
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42
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Shibata Y, Hara T, Nagano J, Nakamura N, Ohno T, Ninomiya S, Ito H, Tanaka T, Saito K, Seishima M, Shimizu M, Moriwaki H, Tsurumi H. The Role of Indoleamine 2,3-Dioxygenase in Diethylnitrosamine-Induced Liver Carcinogenesis. PLoS One 2016; 11:e0146279. [PMID: 26727596 PMCID: PMC4699706 DOI: 10.1371/journal.pone.0146279] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/15/2015] [Indexed: 12/16/2022] Open
Abstract
Indoleamine 2,3-dioxygenase (IDO), a tryptophan-catabolizing intracellular enzyme of the L-kynurenine pathway, causes preneoplastic cells and tumor cells to escape the immune system by inducing immune tolerance; this mechanism might be associated with the development and progression of human malignancies. In the present study, we investigated the role of IDO in diethylnitrosamine (DEN)-induced hepatocarcinogenesis by using IDO-knockout (KO) mice. To induce hepatocellular carcinoma (HCC), hepatic adenoma, and preneoplastic hepatocellular lesions termed foci of cellular alteration (FCA), male IDO-wild-type (WT) and IDO-KO mice with a C57BL/6J background received a single intraperitoneal injection of DEN at 2 weeks of age. The mice were sacrificed to evaluate the development of FCA and hepatocellular neoplasms. HCC overexpressed IDO and L-kynurenine compared to surrounding normal tissue in the DEN-treated IDO-WT mice. The number and cell proliferative activity of FCAs, and the incidence and multiplicity of HCC were significantly greater in the IDO-WT than in the IDO-KO mice. The expression levels of the IDO protein, of L-kynurenine, and of IFN-γ, COX-2, TNF-α, and Foxp3 mRNA were also significantly increased in the DEN-induced hepatic tumors that developed in the IDO-WT mice. The mRNA expression levels of CD8, perforin and granzyme B were markedly increased in hepatic tumors developed in IDO-KO mice. Moreover, Foxp3-positive inflammatory cells had infiltrated into the livers of DEN-treated IDO-WT mice, whereas fewer cells had infiltrated into the livers of IDO-KO mice. Induction of IDO and elevation of L-kynurenine might play a critical role in both the early and late phase of liver carcinogenesis. Our findings suggest that inhibition of IDO might offer a promising strategy for the prevention of liver cancer.
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MESH Headings
- Adenoma/chemically induced
- Adenoma/enzymology
- Adenoma/immunology
- Animals
- CD8 Antigens/biosynthesis
- CD8 Antigens/genetics
- Cyclooxygenase 2/biosynthesis
- Cyclooxygenase 2/genetics
- Diethylnitrosamine
- Disease Progression
- Forkhead Transcription Factors/biosynthesis
- Forkhead Transcription Factors/genetics
- Gene Expression Regulation, Neoplastic
- Granzymes/biosynthesis
- Granzymes/genetics
- Immune Tolerance
- Indoleamine-Pyrrole 2,3,-Dioxygenase/deficiency
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/physiology
- Interferon-gamma/biosynthesis
- Interferon-gamma/genetics
- Kynurenine/biosynthesis
- Kynurenine/physiology
- Liver Neoplasms, Experimental/chemically induced
- Liver Neoplasms, Experimental/enzymology
- Liver Neoplasms, Experimental/immunology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Pore Forming Cytotoxic Proteins/biosynthesis
- Pore Forming Cytotoxic Proteins/genetics
- Precancerous Conditions/chemically induced
- Precancerous Conditions/enzymology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Regulatory/immunology
- Tumor Necrosis Factor-alpha/biosynthesis
- Tumor Necrosis Factor-alpha/genetics
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Affiliation(s)
- Yuhei Shibata
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takeshi Hara
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Junji Nagano
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Nobuhiko Nakamura
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tomohiko Ohno
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Soranobu Ninomiya
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyasu Ito
- Departments of Informative Clinical Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takuji Tanaka
- Departments of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kuniaki Saito
- Human Health Sciences, Graduate School of Medicine and Faculty of Medicine, Kyoto University, Kyoto, Japan
| | - Mitsuru Seishima
- Departments of Informative Clinical Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masahito Shimizu
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hisataka Moriwaki
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hisashi Tsurumi
- First Departments of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- * E-mail:
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Abstract
AIM To study the clinicopathological features of oral verrucous carcinoma (VC). METHODS Archives of the department were retrieved for verrucous lesions. After thorough histopathologic examination, 10 cases were confirmed as VC. Age, sex, site, tobacco habit, clinical presentation, and histologically, the presence of dysplasia and koilocytic changes were studied. RESULTS Oral VC showed a distinct male preponderance with male:female ratio of 8:2 and occurring predominantly in sixth and seventh decade. Tobacco association in the form of chewing (50%), smoking (40%) or both (10%) was found in all the cases. In chewers, the site of lesion corresponded to the site of tobacco placement that is gingivobuccal sulcus. In smokers, the posterior part of the oral cavity was affected, and the lesions were extensive. Painless, exophytic, cauliflower-like growth was the most common presentation with surrounding whitish (leukoplakic) mucosa. Fifty percentage of the cases showed human papilloma virus-induced changes in the epithelium. Dysplasia was seen in two cases. CONCLUSION Oral VCs are invariably associated with tobacco habits. In smokers, the lesions are extensive, affecting the posterior parts of the oral cavity. Although evidence of viral infection was seen but its role as an etiological agent is still controversial. Site and depth of the biopsy along with thorough histopathological sampling is essential to avoid erroneous diagnosis.
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Affiliation(s)
- Wanjari G Sonalika
- Department of Oral and Maxillofacial Pathology, Hitkarini Dental College and Hospital, Jabalpur, Madhya Pradesh, India
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44
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Reinberg O. [Proton pump inhibitors (PPI): may be not as harmless as believed]. Rev Med Suisse 2015; 11:1665-1671. [PMID: 26540997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Proton pump inhibitors (PPIs) are among the most widely prescribed medications worldwide and their use is increasing. Their efficiency has been proven and the short term tolerance is good with few reversible side effects. However concerns about possible long term side effects continue to arise. This article reviews proven and potential side effects associated with PPI especially on the long term use.
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45
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Mu X, Español-Suñer R, Mederacke I, Affò S, Manco R, Sempoux C, Lemaigre FP, Adili A, Yuan D, Weber A, Unger K, Heikenwälder M, Leclercq IA, Schwabe RF. Hepatocellular carcinoma originates from hepatocytes and not from the progenitor/biliary compartment. J Clin Invest 2015; 125:3891-903. [PMID: 26348897 DOI: 10.1172/jci77995] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 07/23/2015] [Indexed: 12/19/2022] Open
Abstract
In many organs, including the intestine and skin, cancers originate from cells of the stem or progenitor compartment. Despite its nomenclature, the cellular origin of hepatocellular carcinoma (HCC) remains elusive. In contrast to most organs, the liver lacks a defined stem cell population for organ maintenance. Previous studies suggest that both hepatocytes and facultative progenitor cells within the biliary compartment are capable of generating HCC. As HCCs with a progenitor signature carry a worse prognosis, understanding the origin of HCC is of clinical relevance. Here, we used complementary fate-tracing approaches to label the progenitor/biliary compartment and hepatocytes in murine hepatocarcinogenesis. In genotoxic and genetic models, HCCs arose exclusively from hepatocytes but never from the progenitor/biliary compartment. Cytokeratin 19-, A6- and α-fetoprotein-positive cells within tumors were hepatocyte derived. In summary, hepatocytes represent the cell of origin for HCC in mice, and a progenitor signature does not reflect progenitor origin, but dedifferentiation of hepatocyte-derived tumor cells.
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46
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Taketa Y, Inoue K, Takahashi M, Sakamoto Y, Watanabe G, Taya K, Yoshida M. Effects of sulpiride and ethylene glycol monomethyl ether on endometrial carcinogenicity in Donryu rats. J Appl Toxicol 2015; 36:769-76. [PMID: 26178146 DOI: 10.1002/jat.3206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/13/2015] [Accepted: 06/04/2015] [Indexed: 11/07/2022]
Abstract
Sulpiride and ethylene glycol monomethyl ether (EGME) are known ovarian toxicants that stimulate prolactin (PRL) secretion, resulting in hypertrophy of the corpora lutea and increased progesterone (P4) production. The purpose of the present study was to investigate how the PRL stimulatory agents affected uterine carcinogenesis and to clarify the effects of PRL on endometrial adenocarcinoma progression in rats. Ten-week-old female Donryu rats were treated once with N-ethyl-N'-nitro-N-nitrosoguanidine (20 mg kg(-1) ), followed by treatment with sulpiride (200 ppm) or EGME (1250 ppm) from 11 weeks of age to 12 months of age. Sulpiride treatment inhibited the incidence of uterine adenocarcinoma and precancerous lesions of atypical endometrial hyperplasia, whereas EGME had no effect on uterine carcinogenesis. Sulpiride markedly prevented the onset of persistent estrus throughout the study period, and EGME delayed and inhibited the onset of persistent estrus. Moreover, sulpiride-treated animals showed high PRL and P4 serum levels without changes in the levels of estradiol-17β, low uterine weights and histological luteal cell hypertrophy. EGME did not affect serum PRL and P4 levels. These results suggest that the prolonged low estradiol-17β to P4 ratio accompanied by persistent estrous cycle abnormalities secondary to the luteal stimulatory effects of PRL may explain the inhibitory effects of sulpiride on uterine carcinogenesis in rats. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Yoshikazu Taketa
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
- Tsukuba Drug Safety, Global Drug Safety, Biopharmaceutical Assessments Core Function Unit, Eisai Product Creation Systems, Eisai Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Kaoru Inoue
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Miwa Takahashi
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Yohei Sakamoto
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Kazuyoshi Taya
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Midori Yoshida
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
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Affiliation(s)
- P M Pour
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska, Medical Center, Omaha
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- B A Diwan
- Biological Carcinogenesis and Development Program, Program Resources, Inc., Frederick, Md
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- S Fukushima
- First Department of Pathology, Nagoya City University Medical School, Japan
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- H Witschi
- Toxic Substances Training and Research Program, University of California, Davis
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