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Gu LM, Li HZ, Gao L, Li H, Wei LF, Pan CY, Wu KX, Tian YZ. Huangqin Decoction Delays Progress of Colitis-Associated Carcinogenesis by Regulating Nrf2/HO-1 Antioxidant Signal Pathway in Mice. Chin J Integr Med 2024; 30:135-142. [PMID: 37434030 DOI: 10.1007/s11655-023-3554-y] [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] [Accepted: 05/08/2023] [Indexed: 07/13/2023]
Abstract
OBJECTIVE To investigate the effect of Huangqin Decoction (HQD) on nuclear factor erythroid 2 related-factor 2 (Nrf2)/heme oxygenase (HO-1) signaling pathway by inducing the colitis-associated carcinogenesis (CAC) model mice with azoxymethane (AOM)/dextran sodium sulfate (DSS). METHODS The chemical components of HQD were analyzed by liquid chromatography-quadrupole-time-of-flight mass spectrometry (LC-Q-TOF-MS/MS) to determine the molecular constituents of HQD. Totally 48 C57BL/6J mice were randomly divided into 6 groups by a random number table, including control, model (AOM/DSS), mesalazine (MS), low-, medium-, and high-dose HQD (HQD-L, HQD-M, and HQD-H) groups, 8 mice in each group. Except for the control group, the mice in the other groups were intraperitoneally injected with AOM (10 mg/kg) and administrated with 2.5% DSS orally for 1 week every two weeks (totally 3 rounds of DSS) to construct a colitis-associated carcinogenesis mouse model. The mice in the HQD-L, HQD-M and HQD-H groups were given HQD by gavage at doses of 2.925, 5.85, and 11.7 g/kg, respectively; the mice in the MS group was given a suspension of MS at a dose of 0.043 g/kg (totally 11 weeks). The serum levels of malondialdehyde (MDA) and superoxide dismutase (SOD) were measured by enzyme-linked immunosorbent assay. The mRNA and protein expression levels of Nrf2, HO-1, and inhibitory KELCH like ECH-related protein 1 (Keap1) in colon tissue were detected by quantitative real-time PCR, immunohistochemistry, and Western blot, respectively. RESULTS LC-Q-TOF-MS/MS analysis revealed that the chemical constituents of HQD include baicalin, paeoniflorin, and glycyrrhizic acid. Compared to the control group, significantly higher MDA levels and lower SOD levels were observed in the model group (P<0.05), whereas the expressions of Nrf2 and HO-1 were significantly decreased, and the expression of Keap1 increased (P<0.01). Compared with the model group, serum MDA level was decreased and SOD level was increased in the HQD-M, HQD-H and MS groups (P<0.05). Higher expressions of Nrf2 and HO-1 were observed in the HQD groups. CONCLUSION HQD may regulate the expression of Nrf2 and HO-1 in colon tissue, reduce the expression of MDA and increase the expression of SOD in serum, thus delaying the progress of CAC in AOM/DSS mice.
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Affiliation(s)
- Li-Mei Gu
- Department of Gastrointestinal Endoscopy, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
| | - He-Zhong Li
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Lei Gao
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Hui Li
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Lan-Fu Wei
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Cheng-Yu Pan
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Ke-Xuan Wu
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Yao-Zhou Tian
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China.
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Deng J, Zhao L, Yuan X, Li Y, Shi J, Zhang H, Zhao Y, Han L, Wang H, Yan Y, Zhao H, Wang H, Zou F. Pre-Administration of Berberine Exerts Chemopreventive Effects in AOM/DSS-Induced Colitis-Associated Carcinogenesis Mice via Modulating Inflammation and Intestinal Microbiota. Nutrients 2022; 14:726. [PMID: 35215376 DOI: 10.3390/nu14040726] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 02/07/2023] Open
Abstract
Inflammatory activation and intestinal flora imbalance play an essential role in the development and progression of colorectal cancer (CRC). Berberine (BBR) has attracted great attention in recent years due to its heath-related benefits in inflammatory disorders and tumors, but the intricate mechanisms have not been fully elucidated. In this study, the effects and the mechanism of BBR on colon cancer were investigated in an azoxymethane (AOM)/dextran sodium sulfate (DSS)-induced colitis-associated carcinogenesis mice model. Our results showed that pre-administration of BBR showed a decrease in weight loss, disease activity index (DAI) score, and the number of colon tumors in mice, compared with the model group. The evidence from pathological examination indicated that the malignancy of intestinal tumors was ameliorated after pre-administration of BBR. Additionally, pre-administration with BBR suppressed the expression of pro-inflammatory factors (interleukin (IL)-6, IL-1β, cyclooxygenase (COX)-2 and tumor necrosis factor (TNF)-α) and the cell-proliferation marker Ki67, while expression of the tight junction proteins (ZO-1 and occludin) were increased in colon tissue. Moreover, the levels of critical pathway proteins involved in the inflammatory process (p-STAT3 and p-JNK) and cell cycle regulation molecules (β-catenin, c-Myc and CylinD1) exhibited lower expression levels. Besides, 16S rRNA sequence analysis indicated that pre-administration of BBR increased the ratio of Firmicutes/Bacteroidetes (F:M) and the relative abundance of potentially beneficial bacteria, while the abundance of cancer-related bacteria was decreased. Gavage with Lactobacillus rhamnosus can improve the anti-tumor effect of BBR. Overall, pre-administration of BBR exerts preventive effects in colon carcinogenesis, and the mechanisms underlying these effects are correlated with the inhibition of inflammation and tumor proliferation and the maintenance of intestinal homeostasis.
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Lin H, Feng L, Cui KS, Zeng LW, Gao D, Zhang LX, Xu WH, Sun YH, Shu HB, Li S. The membrane-associated E3 ubiquitin ligase MARCH3 downregulates the IL-6 receptor and suppresses colitis-associated carcinogenesis. Cell Mol Immunol 2021; 18:2648-2659. [PMID: 34785732 DOI: 10.1038/s41423-021-00799-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 02/07/2023] Open
Abstract
The IL-6-STAT3 axis is critically involved in inflammation-associated carcinogenesis (IAC). How this axis is regulated to modulate IAC remains unknown. Here, we show that the plasma membrane-associated E3 ubiquitin ligase MARCH3 negatively regulates STAT3 activation triggered by IL-6, as well as another IL-6 subfamily member, Oncostatin M (OSM). MARCH3 is associated with the IL-6 receptor α-chain (IL-6Rα) and its coreceptor gp130. Biochemical experiments indicated that MARCH3 mediates the polyubiquitination of IL-6Rα at K401 and gp130 at K849 following IL-6 stimulation, leading to their translocation to and degradation in lysosomes. MARCH3 deficiency increases IL-6- and OSM-triggered activation of STAT3 and induction of downstream effector genes in various cell types. MARCH3 deficiency enhances dextran sulfate sodium (DSS)-induced STAT3 activation, increases the expression of inflammatory cytokines, and exacerbates colitis, as well as azoxymethane (AOM)/DSS-induced colitis-associated cancer in mice. In addition, MARCH3 is downregulated in human colorectal cancer tissues and associated with poor survival across different cancer types. Our findings suggest that MARCH3 is a pivotal negative regulator of IL-6-induced STAT3 activation, inflammation, and inflammation-associated carcinogenesis.
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Affiliation(s)
- Heng Lin
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Lu Feng
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Kai-Sa Cui
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi, 214062, Jiangsu, China
| | - Lin-Wen Zeng
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Deng Gao
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Long-Xiang Zhang
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Wen-Hua Xu
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Yu-Hao Sun
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China
| | - Hong-Bing Shu
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China.
| | - Shu Li
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University; Medical Research Institute; Frontier Science Center for Immunology and Metabolism; Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences; Wuhan University, Wuhan, 430071, China.
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Wu X, Chen X, Liu H, He ZW, Wang Z, Wei LJ, Wang WY, Zhong S, He Q, Zhang Z, Ou R, Gao J, Lei Y, Yang W, Song G, Jin Y, Zhou L, Xu Y, Tang KF. Rescuing Dicer expression in inflamed colon tissues alleviates colitis and prevents colitis-associated tumorigenesis. Am J Cancer Res 2020; 10:5749-5762. [PMID: 32483416 PMCID: PMC7254990 DOI: 10.7150/thno.41894] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/04/2020] [Indexed: 12/13/2022] Open
Abstract
Chronic inflammation is known to promote carcinogenesis; Dicer heterozygous mice are more likely to develop colitis-associated tumors. This study investigates whether Dicer is downregulated in inflamed colon tissues before malignancy occurs and whether increasing Dicer expression in inflamed colon tissues can alleviate colitis and prevent colitis-associated tumorigenesis. Methods: Gene expression in colon tissues was analyzed by immunohistochemistry, immunoblots, and real-time RT-PCR. Hydrogen peroxide or N-acetyl-L-cysteine was used to induce or alleviate oxidative stress, respectively. Mice were given azoxymethane followed by dextran sulfate sodium to induce colitis and colon tumors. Berberine, anastrozole, or pranoprofen was used to rescue Dicer expression in inflammatory colon tissues. Results: Oxidative stress repressed Dicer expression in inflamed colon tissues by inducing miR-215 expression. Decreased Dicer expression increased DNA damage and cytosolic DNA and promoted interleukin-6 expression upon hydrogen peroxide treatment. Dicer overexpression in inflamed colon tissues alleviated inflammation and repressed colitis-associated carcinogenesis. Furthermore, we found that anastrozole, berberine, and pranoprofen could promote Dicer expression and protect cells from hydrogen peroxide-induced DNA damage, thereby reducing cytosolic DNA and partially repressing interleukin-6 expression upon hydrogen peroxide treatment. Rescuing Dicer expression using anastrozole, berberine, or pranoprofen in inflamed colon tissues alleviated colitis and prevented colitis-associated tumorigenesis. Conclusions: Dicer was downregulated in inflamed colon tissues before malignancy occurred. Decreased Dicer expression further exaggerated inflammation, which may promote carcinogenesis. Anastrozole, berberine, and pranoprofen alleviated colitis and colitis-associated tumorigenesis by promoting Dicer expression. Our study provides insight into potential colitis treatment and colitis-associated colon cancer prevention strategies.
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Yang R, Shan S, Zhang C, Shi J, Li H, Li Z. Inhibitory Effects of Bound Polyphenol from Foxtail Millet Bran on Colitis-Associated Carcinogenesis by the Restoration of Gut Microbiota in a Mice Model. J Agric Food Chem 2020; 68:3506-3517. [PMID: 32100999 DOI: 10.1021/acs.jafc.0c00370] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Colorectal cancer (CRC) is a common malignant tumor occurring in the colon. It has been known that the gut microbiota is a complex ecosystem and plays an important role in the pathogenesis of colorectal cancer. Our previous study showed that bound polyphenol of the inner shell (BPIS) from foxtail millet bran exhibited significant antitumor activities in cancer cells and nude mice models. In the present study, the anticancer potential of BPIS is evaluated in the azoxymethane (AOM) and dextran sodium sulfate (DSS)-induced mouse CRC model. Results showed that BPIS could decrease the number and volume of tumors and protect the epithelial architecture from damage. Certain biomarkers associated with CRC formation, such as COX-2, EMR1, PCNA, and caspase-3, were strongly changed by BPIS. Moreover, by 16S rRNA gene sequence analysis, it was found that BPIS could remodel the overall structure of the gut microbiota from tumor-bearing mice toward that of the normal counterparts, including two phyla and eight genera, together with regulations on several genes that are responsible for 17 signaling pathways.
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Affiliation(s)
- Ruipeng Yang
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Shuhua Shan
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Chen Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Jiangying Shi
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Hanqing Li
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
- School of Life Science, Shanxi University, Taiyuan 030006, China
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Li W, Zhao X, Lv X, Han W, Wang H. Silibinin Retards Colitis-associated Carcinogenesis by Repression of Cdc25C in Mouse Model. Inflamm Bowel Dis 2019; 25:1187-1195. [PMID: 30753481 DOI: 10.1093/ibd/izz007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Indexed: 02/07/2023]
Abstract
PURPOSE Silibinin possesses the efficacy of anticancer and anti-inflammation. We aimed to test whether silibinin could prevent colitis-associated carcinogenesis in mouse model. EXPERIMENTAL DESIGN Azoxymethane (AOM) and dextran sulfate sodium (DSS) were used to induce colitis-associated tumorigenesis in C57BL mice. Six-to-eight-week-old male mice were gavaged with 350 or 750 mg/kg of silibinin for 10 weeks right after DSS administration. The mice were then sacrificed, and colon tissues were measured for tumor multiplicity and size. Molecular changes about proliferation, apoptosis and inflammation were tested. RESULTS Silibinin feeding showed a dose-dependent inhibition on the size of tumor induced by AOM/DSS in mice. In addition, silibinin inhibited cell proliferation evidenced by a decrease (P < 0.05) in Ki-67 and proliferating cell nuclear antigen (PCNA). However, silibinin did not show any significant effect on inflammation, apoptosis, and the mRNA expression of cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), and vascular endothelial growth factor (VEGF). The experiments in vitro showed that silibinin induced cell cycle arrest at G2/M phase in CT-26 cells, a mouse colonic cancer cell line. Furthermore, silibinin reduced the expression of Cdc25C and blocked the dephosphorylation of CDK1 at multiple sites both in vitro and in vivo. CONCLUSIONS Silibinin targets Cdc25C/CDK1 pathway and mitigates colitis-associated tumorigenesis in mice. Thus, our findings indicate the chemopreventive potential of silibinin for inflammation-associated colon cancer.
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Affiliation(s)
- Weiwei Li
- State Key Laboratory of Molecular Oncology, National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xinhua Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xue Lv
- State Key Laboratory of Molecular Oncology, National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenxiao Han
- State Key Laboratory of Molecular Oncology, National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hongying Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Huo X, Liu D, Gao L, Li L, Cao L. Flavonoids Extracted from Licorice Prevents Colitis-Associated Carcinogenesis in AOM/DSS Mouse Model. Int J Mol Sci 2016; 17:ijms17091343. [PMID: 27563884 PMCID: PMC5037654 DOI: 10.3390/ijms17091343] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 06/30/2016] [Revised: 07/24/2016] [Accepted: 08/01/2016] [Indexed: 12/13/2022] Open
Abstract
Inflammatory bowel disease (IBD) is generally considered as a major risk factor in the progression of colitis-associated carcinogenesis (CAC). Thus, it is well accepted that ameliorating inflammation creates a potential to achieve an inhibitory effect on CAC. Licorice flavonoids (LFs) possess strong anti-inflammatory activity, making it possible to investigate its pharmacologic role in suppressing CAC. The purpose of the present study was to evaluate the anti-tumor potential of LFs, and further explore the underlying mechanisms. Firstly, an azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced mouse model was established and administered with or without LFs for 10 weeks, and then the severity of CAC was examined macroscopically and histologically. Subsequently, the effects of LFs on expression of proteins associated with apoptosis and proliferation, levels of inflammatory cytokine, expression of phosphorylated-Janus kinases 2 (p-Jak2) and phosphorylated-signal transducer and activator of transcription 3 (p-Stat3), and activation of nuclear factor-κB (NFκB) and P53 were assessed. We found that LFs could significantly reduce tumorigenesis induced by AOM/DSS. Further study revealed that LFs treatment substantially reduced activation of NFκB and P53, and subsequently suppressed production of inflammatory cytokines and phosphorylation of Jak2 and Stat3 in AOM/DSS-induced mice. Taken together, LFs treatment alleviated AOM/DSS induced CAC via P53 and NFκB/IL-6/Jak2/Stat3 pathways, highlighting the potential of LFs in preventing CAC.
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Affiliation(s)
- Xiaowei Huo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| | - Dongyu Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| | - Li Gao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| | - Liyong Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| | - Li Cao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
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Do EJ, Hwang SW, Kim SY, Ryu YM, Cho EA, Chung EJ, Park S, Lee HJ, Byeon JS, Ye BD, Yang DH, Park SH, Yang SK, Kim JH, Myung SJ. Suppression of colitis-associated carcinogenesis through modulation of IL-6/STAT3 pathway by balsalazide and VSL#3. J Gastroenterol Hepatol 2016; 31:1453-61. [PMID: 26711554 DOI: 10.1111/jgh.13280] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 12/15/2015] [Accepted: 12/15/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIM Recent studies suggest that the anti-inflammatory agent balsalazide (BSZ) and probiotic agent VSL#3 have potential therapeutic benefits for the treatment of patients with inflammatory bowel disease. However, their effectiveness in preventing colitis-associated carcinogenesis (CAC) remains uncertain. The aim of the present study was to determine the chemopreventive effects of BSZ and VSL#3 in the murine azoxymethane (AOM)/dextran sodium sulfate (DSS) model. METHODS C57B/L6J mice were randomly divided into four groups: CAC group, BSZ group, VSL#3 group, and BSZ + VSL#3 group. After 2 weeks, the AOM/DSS model was induced by AOM injection followed by two cycles of 2% DSS. RESULTS During first and second cycles of DSS, the number of F4/80-positive macrophages was significantly lower in the drug-treated groups compared with the CAC group (P < 0.05). At the endpoint, the total numbers of tumors in the drug-treated groups were significantly low compared with the CAC group (P < 0.05), and the drug-treated groups had significantly lower F4/80-positive macrophages in the tumor stroma (P < 0.01). The protein production of macrophage inflammatory protein 1 beta, monocyte chemoattractant protein-1, interleukin (IL)-6, and IL-10 in the colon tissues decreased in concordance with the plasma concentrations of the cytokines (P < 0.05). The drug-treated groups revealed lower expression of p-STAT3 compared with the CAC group. In addition, BCL2 decreased, and BAX increased markedly in the BSZ + VSL#3 group. CONCLUSIONS These results revealed that BSZ and VSL#3 have chemopreventive effects against CAC through IL-6/STAT3 suppression. BSZ and VSL#3 could be suitable options for chemoprevention of colorectal cancer.
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Affiliation(s)
- Eun-Ju Do
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea
| | - Sung Wook Hwang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Sang-Yeob Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea.,Department of Convergence Medicine, University of Ulsan College of Medicine, Seoul, Korea
| | - Yeon-Mi Ryu
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea
| | - Eun A Cho
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea
| | - Eun-Ju Chung
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Sunha Park
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea
| | - Hyo Jeong Lee
- Health Screening & Promotion Center, Asan Medical Center, Seoul, Korea
| | - Jeong-Sik Byeon
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Byong Duk Ye
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Dong-Hoon Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Sang Hyoung Park
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Suk-Kyun Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Jin-Ho Kim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Seung-Jae Myung
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea.,Department of Gastroenterology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
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