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Beneficial Effects of Lactic Acid Bacteria on Animal Reproduction Function. Vet Med Int 2022; 2022:4570320. [PMID: 36505731 PMCID: PMC9729032 DOI: 10.1155/2022/4570320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/22/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
Considering the importance of a healthy uterus to the success of breeding, the beneficial effects of lactic acid bacteria on animal reproduction function are of particular interest. In recent decades, infertility has become a widespread issue, with microbiological variables playing a significant role. According to reports, dysbiosis of the vaginal microbiota is connected with infertility; however, the effect of the normal vaginal microbiota on infertility is unknown. In addition, lactic acid bacteria dominate the reproductive system. According to evidence, vaginal lactic acid bacteria play a crucial role in limiting the invasion of pathogenic bacteria by triggering anti-inflammatory chemicals through IL-8, IL-1, and IL-6; immunological responses through inhibition of the adherence of other microorganisms, production of inhibiting substances, and stimulation of mucus production; and also reproductive hormones by increased testosterone hormone release, enhanced the levels of luteinizing hormone, follicle stimulating hormone, the amount of prostaglandin E (2), and prostaglandin F2 alpha. The objective of this study was to compare the advantages of lactic acid bacteria in animal reproduction based on the most recent literature. The administration of a single strain or numerous strains of lactic acid bacteria has a favourable impact on steroidogenesis, gametogenesis, and animal fertility.
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Tumor necrosis factor α upregulates the bile acid efflux transporter OATP3A1 via multiple signaling pathways in cholestasis. J Biol Chem 2021; 298:101543. [PMID: 34971708 PMCID: PMC8784341 DOI: 10.1016/j.jbc.2021.101543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 01/05/2023] Open
Abstract
Cholestasis is a common condition in which the flow of bile from the liver to the intestines is inhibited. It has been shown that organic anion–transporting polypeptide 3A1 (OATP3A1) is upregulated in cholestasis to promote bile acid efflux transport. We have previously shown that the growth factor fibroblast growth factor 19 and inflammatory mediator tumor necrosis factor α (TNFα) increased OATP3A1 mRNA levels in hepatoma peritoneal lavage cell/PRF/5 cell lines. However, the mechanism underlying TNFα-stimulated OATP3A1 expression in cholestasis is unknown. To address this, we collected plasma samples from control and obstructive cholestasis patients and used ELISA to detect TNFα levels. We found that the TNFα levels of plasma and hepatic mRNA transcripts were significantly increased in obstructive cholestatic patients relative to control patients. A significant positive correlation was also observed between plasma TNFα and liver OATP3A1 mRNA transcripts in patients with obstructive cholestasis. Further mechanism analysis revealed that recombinant TNFα induced OATP3A1 expression and activated NF-κB and extracellular signal–regulated kinase (ERK) signaling pathways as well as expression of related transcription factors p65 and specificity protein 1 (SP1). Dual-luciferase reporter and chromatin immunoprecipitation assays showed that recombinant TNFα upregulated the binding activities of NF-κB p65 and SP1 to the OATP3A1 promoter in peritoneal lavage cell/PRF/5 cells. These effects were diminished following the application of NF-κB and ERK inhibitors BAY11-7082 and PD98059. We conclude that TNFα stimulates hepatic OATP3A1 expression in human obstructive cholestasis by activating NF-κB p65 and ERK–SP1 signaling. These results suggest that TNFα-activated NF-κB p65 and ERK–SP1 signaling may be a potential target to ameliorate cholestasis-associated liver injury.
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Ke H, Li F, Deng W, Li Z, Wang S, Lv P, Chen Y. Metformin Exerts Anti-inflammatory and Mucus Barrier Protective Effects by Enriching Akkermansia muciniphila in Mice With Ulcerative Colitis. Front Pharmacol 2021; 12:726707. [PMID: 34658866 PMCID: PMC8514724 DOI: 10.3389/fphar.2021.726707] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 09/13/2021] [Indexed: 12/22/2022] Open
Abstract
The present study aimed to determine if metformin exerts anti-inflammatory and mucus-protective effects via the gut microbiota. Metformin has extensive benefits including anti-inflammatory effects. Previous studies showed that metformin changed the gut microbiota composition and increases the number of goblet cells. Intestinal dysbiosis and goblet cell depletion are important features of ulcerative colitis (UC). The underlying mechanism and whether metformin can improve the mucus barrier in UC remain unclear. Metformin (400 mg/kg/day) was administered to mice with dextran sulfate sodium (DSS)-induced UC for 2 wk to investigate the effects of metformin on the intestinal mucus barrier. The gut microbiota was depleted, using antibiotics, to explore its role in the mucus-protecting effects of metformin. Akkermansia muciniphila (A. muciniphila), which was enriched in metformin-treated mice, was administered to mice to investigate the effects of the bacteria on UC and the mucus barrier. Metformin attenuated DSS-induced UC in mice, as evidenced by the alleviation of diarrhea, hematochezia, and the decrease in body weight. The expression of mucin2, a prominent mucus barrier protein, was increased in the metformin-treated group compared to the DSS-treated group. Furthermore, fecal 16S rRNA analysis showed that metformin treatment changed the gut microbiota composition by increasing the relative abundance of Lactobacillus and Akkermansia species while decreasing Erysipelatoclostridium at the genus level. Antibiotic treatment partly abolished the anti-inflammatory and mucus-protecting effects of metformin. Administration of A. muciniphila alleviated the colonic inflammation and mucus barrier disruption. Metformin alleviated DSS-induced UC in mice and protected against cell damage via affecting the gut microbiota, thereby providing a new mechanism for the therapeutic effect of metformin in patients with UC. This study also provides evidence that A. muciniphila as a probiotic has potential benefits for UC.
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Affiliation(s)
- Haoran Ke
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Fang Li
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Hainan General Hospital, Haikou, China
| | - Wenlin Deng
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Pediatrics, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zitong Li
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Siqi Wang
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Pinjing Lv
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ye Chen
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Ghasemi M, Bakhshi B, Khashei R, Soudi S. Modulatory effect of Vibrio cholerae toxin co-regulated pilus on mucins, toll-like receptors and NOD genes expression in co-culture model of Caco-2 and peripheral blood mononuclear cells (PBMC). Microb Pathog 2020; 149:104566. [DOI: 10.1016/j.micpath.2020.104566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/01/2020] [Accepted: 10/01/2020] [Indexed: 10/23/2022]
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Pan Q, Zhang X, Zhang L, Cheng Y, Zhao N, Li F, Zhou X, Chen S, Li J, Xu S, Huang D, Chen Y, Li L, Wang H, Chen W, Cai SY, Boyer JL, Chai J. Solute Carrier Organic Anion Transporter Family Member 3A1 Is a Bile Acid Efflux Transporter in Cholestasis. Gastroenterology 2018; 155:1578-1592.e16. [PMID: 30063921 PMCID: PMC6221191 DOI: 10.1053/j.gastro.2018.07.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 06/23/2018] [Accepted: 07/25/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Bile acid transporters maintain bile acid homeostasis. Little is known about the functions of some transporters in cholestasis or their regulatory mechanism. We investigated the hepatic expression of solute carrier organic anion transporter family member 3A1 (SLCO3A1, also called OATP3A1) and assessed its functions during development of cholestasis. METHODS We measured levels of OATP3A1 protein and messenger RNA and localized the protein in liver tissues from 22 patients with cholestasis and 21 patients without cholestasis, using real-time quantitative polymerase chain reaction, immunoblot, and immunofluorescence analyses. We performed experiments with Slco3a1-knockout and C57BL/6J (control) mice. Mice and Sprague-Dawley rats underwent bile duct ligation (BDL) or a sham operation. Some mice were placed on a 1% cholic acid (CA) diet to induce cholestasis or on a control diet. Serum and liver tissues were collected and analyzed; hepatic levels of bile acids and 7-α-C4 were measured using liquid chromatography/mass spectrometry. Human primary hepatocytes and hepatoma (PLC/PRF/5) cell lines were used to study mechanisms that regulate OATP3A1 expression and transport. RESULTS Hepatic levels of OATP3A1 messenger RNA and protein were significantly increased in liver tissues from patients with cholestasis and from rodents with BDL or 1% CA diet-induced cholestasis. Levels of fibroblast growth factor 19 (FGF19, FGF15 in rodents) were also increased in liver tissues from patients and rodents with cholestasis. FGF19 signaling activated the Sp1 transcription factor and nuclear factor κB to increase expression of OATP3A1 in hepatocytes; we found binding sites for these factors in the SLCO3A1 promoter. Slco3a1-knockout mice had shorter survival times and increased hepatic levels of bile acid, and they developed more liver injury after the 1% CA diet or BDL than control mice. In hepatoma cell lines, we found OATP3A1 to take prostaglandin E2 and thyroxine into cells and efflux bile acids. CONCLUSIONS We found levels of OATP3A1 to be increased in cholestatic liver tissues from patients and rodents compared with healthy liver tissues. We show that OATP3A1 functions as a bile acid efflux transporter that is up-regulated as an adaptive response to cholestasis.
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Affiliation(s)
- Qiong Pan
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xiaoxun Zhang
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Liangjun Zhang
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Ying Cheng
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Nan Zhao
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Fengju Li
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xueqian Zhou
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Sheng Chen
- Department of Pediatrics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jianwei Li
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Senlin Xu
- Department of Pathology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Dingde Huang
- Department of Nuclear Medicine, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Yue Chen
- Department of Nuclear Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Lihua Li
- Department of Cell Biology, Jinzhou Medical University, Liaoning, China
| | - Huaizhi Wang
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Wensheng Chen
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Shi-Ying Cai
- Department of Internal Medicine and Liver Center, Yale University School of Medicine, New Haven, Connecticut
| | - James L Boyer
- Department of Internal Medicine and Liver Center, Yale University School of Medicine, New Haven, Connecticut
| | - Jin Chai
- Cholestatic Liver Diseases Center and Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, China.
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Increased expression of MUC3A is associated with poor prognosis in localized clear-cell renal cell carcinoma. Oncotarget 2018; 7:50017-50026. [PMID: 27374181 PMCID: PMC5226565 DOI: 10.18632/oncotarget.10312] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/13/2016] [Indexed: 01/04/2023] Open
Abstract
MUC3A is a membrane-associated mucin that recent evidence reveals the role of MUC3A in pathogenesis and progression of cancers. To evaluate the association between MUC3A expression with overall survival (OS) and recurrence-free survival (RFS) in patients with localized clear-cell renal cell carcinoma (ccRCC), we retrospectively detected MUC3A expression in samples of 384 postoperative localized ccRCC patients by immunohistochemistry. Median follow-up was 73 months (range: 42 – 74 mo). Overall, 41 patients died, 47 experienced recurrence. High MUC3A expression occurred in 45.8% of localized ccRCC cases, which was significantly associated with high pT-stage, high Fuhrman grade, high frequency of necrosis and LVI, and increased risk of recurrence and death (Logrank test P < 0.001 and P < 0.001, respectively). By multivariate analysis, MUC3A expression was confirmed as an adverse independent prognostic factor for OS and RFS. The prognostic accuracy of UISS, SSIGN, Leibovich models was significantly increased when MUC3A expression was integrated. Meanwhile, MUC3A was enrolled into a newly built nomogram with other factors selected by multivariate analysis. Calibration curves revealed optimal consistency between observations and prognosis. In conclusion, high MUC3A expression is an adverse prognostic biomarker for OS and RFS in postoperative localized ccRCC patients.
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Ye J, Wei X, Shang Y, Pan Q, Yang M, Tian Y, He Y, Peng Z, Chen L, Chen W, Wang R. Core 3 mucin-type O-glycan restoration in colorectal cancer cells promotes MUC1/p53/miR-200c-dependent epithelial identity. Oncogene 2017; 36:6391-6407. [PMID: 28745318 DOI: 10.1038/onc.2017.241] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 05/25/2017] [Accepted: 06/14/2017] [Indexed: 12/31/2022]
Abstract
The attachment of cell-surface carbohydrates to proteins mediated by the amino acids serine or threonine (O-glycan) is involved in tumor metastasis; the roles of O-glycans vary depending on their structure, but the detailed mechanisms by which O-glycans trigger signaling to control tumor metastasis are largely unknown. In this study, we found that the reduced expression of core 3 synthase correlated with metastasis to lymph nodes and distant organs, resulting in poor prognosis for colorectal cancer (CRC) patients. Mechanically, we revealed that mucin-type core 3 O-glycan was synthesized at the membrane-tethered MUC1 N terminus because of core 3 synthase expression in colon cancer cells. This further inhibited the translocation of MUC1-C to the nucleus, initiated p53 gene transcription that was dependent on the inhibition of MUC1-C nucleus translocation, activated p53-mediated miR-200c expression and resulted in mesenchymal-epithelial transition (MET). Inhibition of MUC1 via small interfering RNA (siRNA) in re-expressed core 3 synthase colon cancer cells further inhibited MUC1-C nucleus translocation, increased p53 and miR-200c expression, and enhanced MET. However, inhibition of p53 via siRNA or miR-200c via miR-200c inhibitor in re-expressed core 3 synthase colon cancer cells promoted the epithelial-mesenchymal transition (EMT) in a reversible manner. Core 3 synthase mRNA levels and the p53 mRNA levels or miR-200c levels in the colon cancerous samples were positively correlated. Our findings suggest a novel mechanism linking mucin-type core 3 O-glycan to the EMT-MET plasticity of CRC cells via MUC1/p53/miR-200c-dependent signaling cascade and shed light on therapeutic strategies to treat this malignancy.
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Affiliation(s)
- J Ye
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - X Wei
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Y Shang
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Q Pan
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - M Yang
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Y Tian
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Y He
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Z Peng
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - L Chen
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - W Chen
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - R Wang
- Department of Gastroenterology, Institute of Gastroenterology of PLA, Southwest Hospital, Third Military Medical University, Chongqing, China
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Pan Q, Meng L, Ye J, Wei X, Shang Y, Tian Y, He Y, Peng Z, Chen L, Chen W, Bian X, Wang R. Transcriptional repression of miR-200 family members by Nanog in colon cancer cells induces epithelial-mesenchymal transition (EMT). Cancer Lett 2017; 392:26-38. [PMID: 28163188 DOI: 10.1016/j.canlet.2017.01.039] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/26/2017] [Accepted: 01/26/2017] [Indexed: 01/20/2023]
Abstract
Nanog is an important embryonic stem cell (ESC) gene that does not function as a classical oncogene, but needs to cooperate with other molecules to potentiate tumorigenic activity. The question addressed by the present study was whether a miRNA link exists between Nanog and epithelial-mesenchymal transition (EMT)-mesenchymal-epithelial transition (MET) plasticity. Here, we found that Nanog mRNA expression level was inversely correlated with miR-200c and miR-200b expression levels in colon cancer cell lines and human colorectal cancer tissues. Forced Nanog expression in low-Nanog colon cancer cells inhibited miR-200c and miR-200b expression, and interfered Nanog expression in high-Nanog colon cancer cells promoted miR-200c and miR-200b expression. Furthermore, we confirmed that Nanog directly repressed transcription of the miR-200c and miR-200b genes, and miR-200c and miR-200b mediated Nanog-induced EMT occurrence. Luciferase and ChIP assays determined that Nanog bound directly to the potential Nanog binding sites in the miR-200c and miR-200b promoters and repressed their transcription. In conclusion, our findings suggest that Nanog modulates EMT-MET plasticity by regulating miR-200 clusters via a direct transcriptional mechanism, and the Nanog-miR-200 axis may be a good therapeutic target for CRC control.
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Affiliation(s)
- Qiong Pan
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Linkun Meng
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Jun Ye
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Xiaolong Wei
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Yangyang Shang
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Yin Tian
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Yonghong He
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Zhihong Peng
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Lei Chen
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Wensheng Chen
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Xiuwu Bian
- Department of Pathology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China.
| | - Rongquan Wang
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China.
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Genís S, Sánchez-Chardi A, Bach À, Fàbregas F, Arís A. A combination of lactic acid bacteria regulates Escherichia coli infection and inflammation of the bovine endometrium. J Dairy Sci 2016; 100:479-492. [PMID: 27837977 DOI: 10.3168/jds.2016-11671] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 09/14/2016] [Indexed: 12/24/2022]
Abstract
Uterine function in cattle is compromised by bacterial contamination and inflammation after calving. The objective of this study was to select a combination of lactic acid bacteria (LAB) to decrease endometrium inflammation and Escherichia coli infection. Primary endometrial epithelial cells were cultured in vitro to select the most favorable LAB combination modulating basal tissue inflammation and E. coli infection. Supernatants were obtained to determine expression of pro-inflammatory cytokines, and E. coli infection was evaluated after harvesting the tissue and plate counting. The selected LAB combination was tested in uterus explants to assess its capacity to modulate basal and acute inflammation (associated with E. coli infection). The combination of Lactobacillus rhamnosus, Pediococcus acidilactici, and Lactobacillus reuteri at a ratio of 25:25:2, respectively, reduced E. coli infection in vitro with (89.77%) or without basal tissue inflammation (95.10%) compared with single LAB strains. Lactic acid bacteria treatment reduced CXCL8 and IL1B expression 4.7- and 2.2-fold, respectively, under acute inflammation. Ex vivo, the tested LAB combination reduced acute inflammation under E. coli infection, decreasing IL-8, IL-1β, and IL-6 up to 2.2-, 2.5-, and 2.2-fold, respectively. In the total inflammation model, the LAB combination decreased IL-8 1.6-fold and IL-6 1.2-fold. Ultrastructural evaluation of the tissue suggested no direct interaction between the LAB and E. coli, although pathological effects of E. coli in endometrial cells were greatly diminished or even reversed by the LAB combination. This study shows the promising potential of LAB probiotics for therapeutic use against endometrial inflammation and infection.
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Affiliation(s)
- Sandra Genís
- Department of Ruminant Production, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Torre Marimon, Caldes de Montbui, Barcelona, Spain 08140
| | | | - Àlex Bach
- Department of Ruminant Production, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Torre Marimon, Caldes de Montbui, Barcelona, Spain 08140; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain 08010
| | - Francesc Fàbregas
- Department of Ruminant Production, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Torre Marimon, Caldes de Montbui, Barcelona, Spain 08140
| | - Anna Arís
- Department of Ruminant Production, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Torre Marimon, Caldes de Montbui, Barcelona, Spain 08140.
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Nowald C, Penk A, Chiu H, Bein T, Huster D, Lieleg O. A Selective Mucin/Methylcellulose Hybrid Gel with Tailored Mechanical Properties. Macromol Biosci 2016; 16:567-79. [DOI: 10.1002/mabi.201500353] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/25/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Constantin Nowald
- Department of Mechanical Engineering Institute for Medical Engineering IMETUM Technische Universität München 85748 Garching Germany
| | - Anja Penk
- Institute of Medical Physics and Biophysics University of Leipzig 04107 Leipzig Germany
| | - Hsin‐Yi Chiu
- Department of Chemistry and Center for NanoScience (CeNS) University of Munich (LMU) 81377 München Germany
| | - Thomas Bein
- Department of Chemistry and Center for NanoScience (CeNS) University of Munich (LMU) 81377 München Germany
| | - Daniel Huster
- Institute of Medical Physics and Biophysics University of Leipzig 04107 Leipzig Germany
| | - Oliver Lieleg
- Department of Mechanical Engineering Institute for Medical Engineering IMETUM Technische Universität München 85748 Garching Germany
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Ye J, Pan Q, Shang Y, Wei X, Peng Z, Chen W, Chen L, Wang R. Core 2 mucin-type O-glycan inhibits EPEC or EHEC O157:H7 invasion into HT-29 epithelial cells. Gut Pathog 2015; 7:31. [PMID: 26677400 PMCID: PMC4681020 DOI: 10.1186/s13099-015-0078-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/24/2015] [Indexed: 12/17/2022] Open
Abstract
Background How host cell glycosylation affects EPEC or EHEC O157:H7 invasion is unclear. This study investigated whether and how O-glycans were involved in EPEC or EHEC O157:H7 invasion into HT-29 cells. Results Lectin histochemical staining confirmed stronger staining with PNA, which labeled Galβ1, 3 GalNAc (core 1 structure) in HT-29-Gal-OBN and C2GnT2-sh2/HT-29 cells, compared with control cells. EPEC or EHEC O157:H7 invasion into HT-29 and its derived cells was based on the intracellular presence of GFP-labeled bacteria. The differentiation of HT-29 cells led to a reduction in EPEC internalization compared with HT-29 cells (p < 0.01). EPEC or EHEC O157:H7 invasion into HT-29-OBN and HT-29-Gal-OBN cells increased compared with HT-29 and HT-29-Gal cells (p < 0.05 and p < 0.01). Core 2 O-glycan-deficient HT-29 cells underwent a significant increase in EPEC (p < 0.01) or EHEC O157:H7 (p < 0.05) invasion compared with control cells. Methods Bacterial invasion into cultured cells was determined by a gentamicin protection assay and a GFP-labeled bacteria invasion assay. O-glycans biosynthesis was inhibited by benzyl-α-GalNAc, and core 2 O-glycan-deficient HT-29 cells were induced by C2GnT2 interference. Conclusion These data indicated that EPEC or EHEC O157:H7 invasion into HT-29 cells was related to their O-glycosylation status. This study provided the first evidence of carbohydrate-dependent EPEC or EHEC O157:H7 invasion into host cells.
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Affiliation(s)
- Jun Ye
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Qiong Pan
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Yangyang Shang
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Xiaolong Wei
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Zhihong Peng
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Wensheng Chen
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Lei Chen
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Rongquan Wang
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038 People's Republic of China
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12
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Ye J, Song L, Liu Y, Pan Q, Zhong X, Li S, Shang Y, Tian Y, He Y, Chen L, Chen W, Peng Z, Wang R. Core 2 Mucin-Type O-Glycan Is Related to EPEC and EHEC O157:H7 Adherence to Human Colon Carcinoma HT-29 Epithelial Cells. Dig Dis Sci 2015; 60:1977-90. [PMID: 25701318 DOI: 10.1007/s10620-015-3548-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 01/19/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM The roles of host glycosylation in interactions with EPEC and EHEC O157:H7 are largely unclear; this study examined whether O-glycans are involved in EPEC and EHEC O157:H7 adherence to HT-29 cells. METHODS Bacterial adherence to the cultured cells was determined using the direct co-staining of adherent bacteria and host cells, the adherent bacteria plating, and/or the direct fluorescent observation of the adherent GFP-labeled bacteria. RESULTS A comparison of the adherence of EPEC and EHEC O157:H7 to HT-29-Gal and HT-29 cells indicated that the differentiation of HT-29 cells led to a reduction in the adherence of EPEC and EHEC O157:H7. EPEC and EHEC O157:H7 adhesion decreased after the abrogation of O-glycan biosynthesis mediated by benzyl-α-GalNAc treatment. Core 2 O-glycan-deficient HT-29 cells induced by C2GnT2 knockdown had a significant reduction in EPEC and EHEC O157:H7 adhesion in C2GnT2-sh2/HT-29 cells compared with HT-29 and shRNA-Ctr/HT-29 cells. MUC2 expression in benzyl-α-GalNAc-treated HT-29 cells was significantly reduced but unchanged in C2GnT2-deficient HT-29 cells. EPEC or EHEC O157:H7 infection in C2GnT2-deficient HT-29 cells deteriorated the epithelial barrier function. The occludin expression in the shRNA-Ctr/HT-29 and C2GnT2-sh2/HT-29 cells after infection with EPEC or EHEC O157:H7 was pyknic and discontinuous at the cell surface compared with its continuous distribution of control cells. These data indicate that EPEC and EHEC O157:H7 adherence to HT-29 cells is related to mucin-type core 2 O-glycan. CONCLUSIONS This study provides the concepts toward the design of carbohydrate-dependent inhibition of EPEC and EHEC O157:H7 adhesion to human intestinal epithelial cells.
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Affiliation(s)
- Jun Ye
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University, Chongqing, 400038, People's Republic of China
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13
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Abstract
PURPOSE OF REVIEW Colonization of the host epithelia by pathogenic Escherichia coli is influenced by the ability of the bacteria to interact with host surfaces. Because the initial step of an E. coli infection is to adhere, invade, and persist within host cells, some strategies used by intestinal and extraintestinal E. coli to infect host cell are presented. RECENT FINDINGS This review highlights recent progress understanding how extraintestinal pathogenic E. coli strains express specific adhesins or invasins that allow colonization of the urinary tract or the meninges, while intestinal E. coli strains are able to colonize different regions of the intestinal tract using other specialized adhesins or invasins. Finally, evaluation of different diets and environmental conditions regulating the colonization of these pathogens is discussed. SUMMARY Discovery of new interactions between pathogenic E. coli and the host epithelial cells unravels the need for more mechanistic studies that can provide new clues regarding how to combat these infections.
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14
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Zhang W, Zhu YH, Yang JC, Yang GY, Zhou D, Wang JF. A Selected Lactobacillus rhamnosus Strain Promotes EGFR-Independent Akt Activation in an Enterotoxigenic Escherichia coli K88-Infected IPEC-J2 Cell Model. PLoS One 2015; 10:e0125717. [PMID: 25915861 PMCID: PMC4411159 DOI: 10.1371/journal.pone.0125717] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/17/2015] [Indexed: 12/24/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) are important intestinal pathogens that cause diarrhea in humans and animals. Although probiotic bacteria may protect against ETEC-induced enteric infections, the underlying mechanisms are unknown. In this study, porcine intestinal epithelial J2 cells (IPEC-J2) were pre-incubated with and without Lactobacillus rhamnosus ATCC 7469 and then exposed to F4+ ETEC. Increases in TLR4 and NOD2 mRNA expression were observed at 3 h after F4+ ETEC challenge, but these increases were attenuated by L. rhamnosus treatment. Expression of TLR2 and NOD1 mRNA was up-regulated in cells pre-treated with L. rhamnosus. Pre-treatment with L. rhamnosus counteracted F4+ ETEC-induced increases in TNF-α concentration. Increased PGE2. concentrations were observed in cells infected with F4+ ETEC and in cells treated with L. rhamnosus only. A decrease in phosphorylated epidermal growth factor receptor (EGFR) was observed at 3 h after F4+ ETEC challenge in cells treated with L. rhamnosus. Pre-treatment with L. rhamnosus enhanced Akt phosphorylation and increased ZO-1 and occludin protein expression. Our findings suggest that L. rhamnosus protects intestinal epithelial cells from F4+ ETEC-induced damage, partly through the anti-inflammatory response involving synergism between TLR2 and NOD1. In addition, L. rhamnosus promotes EGFR-independent Akt activation, which may activate intestinal epithelial cells in response to bacterial infection, in turn increasing tight junction integrity and thus enhancing the barrier function and restricting pathogen invasion. Pre-incubation with L. rhamnosus was superior to co-incubation in reducing the adhesion of F4+ ETEC to IPEC-J2 cells and subsequently attenuating F4+ ETEC-induced mucin layer destruction and suppressing apoptosis. Our data indicate that a selected L. rhamnosus strain interacts with porcine intestinal epithelial cells to maintain the epithelial barrier and promote intestinal epithelial cell activation in response to bacterial infection, thus protecting cells from the deleterious effects of F4+ ETEC.
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Affiliation(s)
- Wei Zhang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yao-Hong Zhu
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jin-Cai Yang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Gui-Yan Yang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Dong Zhou
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jiu-Feng Wang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
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15
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Shimizu H, Baba N, Nose T, Taguchi R, Tanaka S, Joe GH, Maseda H, Nomura N, Hagio M, Lee JY, Fukiya S, Yokota A, Ishizuka S, Miyazaki H. Activity of ERK regulates mucin 3 expression and is involved in undifferentiated Caco-2 cell death induced by 3-oxo-C12-homoserine lactone. Biosci Biotechnol Biochem 2015; 79:937-42. [PMID: 25774422 DOI: 10.1080/09168451.2015.1006570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The signal molecule, 3-oxo-C12-homoserine lactone (3-oxo-C12-HSL), is similar to a mammalian hormone in bacteria. Although most studies have examined the effects of high 3-oxo-C12-HSL concentrations (>200 μM) on mammalian cellular functions because ~600 μM 3-oxo-C12-HSL can be secreted in biofilms of Pseudomonas aeruginosa grown in vitro, we previously showed that a low 3-oxo-C12-HSL concentration (30 μM) induces the apoptosis of undifferentiated Caco-2 cells through suppressing Akt activity. Here, we found that a low concentration of 3-oxo-C12-HSL-activated ERK1/2 in undifferentiated Caco-2 cells. Incubating cells with the ERK pathway inhibitor U0126 for 30 min alleviated the mucin 3 (MUC3) expression suppressed by 3-oxo-C12-HSL, and the upregulation of MUC3 expression induced by a 48-h incubation with U0126-reduced cell death. Thus, altered MUC3 expression caused by long-term attenuated ERK1/2 activity might correlate with the death of undifferentiated Caco-2 cells induced by 3-oxo-C12-HSL.
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Affiliation(s)
- Hidehisa Shimizu
- a Research Faculty of Agriculture, Division of Applied Bioscience , Hokkaido University , Sapporo , Japan
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16
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Shibahara H, Higashi M, Yokoyama S, Rousseau K, Kitazono I, Osako M, Shirahama H, Tashiro Y, Kurumiya Y, Narita M, Kuze S, Hasagawa H, Kato T, Kubota H, Suzuki H, Arai T, Sakai Y, Yuasa N, Fujino M, Kondo S, Okamoto Y, Yamamoto T, Hiromatsu T, Sasaki E, Shirai K, Kawai S, Hattori K, Tsuji H, Okochi O, Sakamoto M, Kondo A, Konishi N, Batra SK, Yonezawa S. A comprehensive expression analysis of mucins in appendiceal carcinoma in a multicenter study: MUC3 is a novel prognostic factor. PLoS One 2014; 9:e115613. [PMID: 25551773 PMCID: PMC4281150 DOI: 10.1371/journal.pone.0115613] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 11/28/2014] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Mucins are implicated in survival in various cancers, but there have been no report addressed on survival in appendiceal carcinoma, an uncommon disease with different clinical and pathological features from those of other colon cancers. We aimed to investigate the clinical implications of expression of mucins in appendiceal carcinoma. METHODS Expression profiles of MUC1, MUC2, MUC3, MUC4, MUC5AC, MUC6, MUC16 and MUC17 in cancer tissue were examined by immunohistochemistry in 108 cases of surgically resected appendiceal carcinoma. RESULTS The following relationships of mucins with clinicopathologic factors were identified: MUC1 with positive lymphatic invasion (p = 0.036); MUC2 with histological type (mucinous carcinoma, p<0.001), superficial invasion depth (p = 0.007), negative venous invasion (p = 0.003), and curative resection (p = 0.019); MUC3 with non-curative resection (p = 0.017); MUC5AC with histological type (mucinous carcinoma, p = 0.002), negative lymphatic invasion (p = 0.021), and negative venous invasion (p = 0.022); and MUC16 with positive lymph node metastasis (p = 0.035), positive venous invasion (p<0.05), and non-curative resection (p = 0.035). A poor prognosis was related to positive lymph node metastasis (p = 0.04), positive lymphatic invasion (p = 0.02), positive venous invasion (p<0.001), non-curative resection (p<0.001), and positive expression of MUC3 (p = 0.004). In multivariate analysis, positive venous invasion (HR: 6.93, 95% CI: 1.93-24.96, p = 0.003), non-curative resection (HR: 10.19, 95% CI: 3.05-34.07, p<0.001) and positive MUC3 expression (HR: 3.37, 95% CI: 1.13-10.03, p = 0.03) were identified as significant independent prognostic factors in patients with appendiceal carcinoma. CONCLUSIONS Expression of MUC3 in appendiceal carcinoma is an independent factor for poor prognosis and a useful predictor of outcome in patients with appendiceal carcinoma after surgery.
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Affiliation(s)
| | - Michiyo Higashi
- Department of Human Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
- * E-mail:
| | - Seiya Yokoyama
- Department of Human Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Karine Rousseau
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, United Kingdom
| | - Iwao Kitazono
- Department of Human Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Masahiko Osako
- Department of Surgery, Kagoshima Medical Association Hospital, Kagoshima, Japan
| | - Hiroshi Shirahama
- Department of Pathology, Imakiire General Hospital, Kagoshima, Japan
| | - Yukie Tashiro
- Department of Pathology, Imakiire General Hospital, Kagoshima, Japan
| | | | | | - Shingo Kuze
- Department of Surgery, Chutoen General Medical Center, Kakegawa, Japan
| | - Hiroshi Hasagawa
- Department of Surgery, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Japan
| | - Takehito Kato
- Department of Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - Hitoshi Kubota
- Department of Surgery, Handa City Hospital, Handa, Japan
| | | | | | - Yu Sakai
- Department of Pathology, Anjo Kosei Hospital, Anjo, Japan
| | - Norihiro Yuasa
- Department of Surgery, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Masahiko Fujino
- Department of Pathology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Shinji Kondo
- Department of Surgery, Sakashita Hospital, Nakatsugawa, Japan
| | - Yoshichika Okamoto
- Department of Surgery, Shizuoka Saiseikai General Hospital, Shizuoka, Japan
| | | | | | - Eiji Sasaki
- Department of Surgery, Kamiiida Daiichi General Hospital, Nagoya, Japan
| | - Kazuhisa Shirai
- Department of Surgery, Yamashita Hospital, Ichinomiya, Japan
| | - Satoru Kawai
- Department of Surgery, Tsushima City Hospital, Tsushima, Japan
| | | | - Hideki Tsuji
- Department of Surgery, Toyota Memorial Hospital, Toyota, Japan
| | - Osamu Okochi
- Department of Surgery, Tosei General Hospital, Seto, Japan
| | - Masaki Sakamoto
- Department of Surgery, Nagoya Tokushukai General Hospital, Kasugai, Japan
| | - Akinobu Kondo
- Department of Surgery, Saiseikai Matsusaka General Hospital, Matsusaka, Japan
| | - Naomi Konishi
- Department of Surgery, Mie Prefectural General Medical Center, Yokkaichi, Japan
| | - Surinder K. Batra
- Departments of Biochemistry and Molecular Biology, Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Suguru Yonezawa
- Department of Human Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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17
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Steinberg KM, Schneider VA, Graves-Lindsay TA, Fulton RS, Agarwala R, Huddleston J, Shiryev SA, Morgulis A, Surti U, Warren WC, Church DM, Eichler EE, Wilson RK. Single haplotype assembly of the human genome from a hydatidiform mole. Genome Res 2014; 24:2066-76. [PMID: 25373144 PMCID: PMC4248323 DOI: 10.1101/gr.180893.114] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A complete reference assembly is essential for accurately interpreting individual genomes and associating variation with phenotypes. While the current human reference genome sequence is of very high quality, gaps and misassemblies remain due to biological and technical complexities. Large repetitive sequences and complex allelic diversity are the two main drivers of assembly error. Although increasing the length of sequence reads and library fragments can improve assembly, even the longest available reads do not resolve all regions. In order to overcome the issue of allelic diversity, we used genomic DNA from an essentially haploid hydatidiform mole, CHM1. We utilized several resources from this DNA including a set of end-sequenced and indexed BAC clones and 100× Illumina whole-genome shotgun (WGS) sequence coverage. We used the WGS sequence and the GRCh37 reference assembly to create an assembly of the CHM1 genome. We subsequently incorporated 382 finished BAC clone sequences to generate a draft assembly, CHM1_1.1 (NCBI AssemblyDB GCA_000306695.2). Analysis of gene, repetitive element, and segmental duplication content show this assembly to be of excellent quality and contiguity. However, comparison to assembly-independent resources, such as BAC clone end sequences and PacBio long reads, indicate misassembled regions. Most of these regions are enriched for structural variation and segmental duplication, and can be resolved in the future. This publicly available assembly will be integrated into the Genome Reference Consortium curation framework for further improvement, with the ultimate goal being a completely finished gap-free assembly.
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Affiliation(s)
| | - Valerie A Schneider
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA
| | | | - Robert S Fulton
- The Genome Institute at Washington University, St. Louis, Missouri 63108, USA
| | - Richa Agarwala
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA
| | - John Huddleston
- Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA; Howard Hughes Medical Institute, University of Washington, Seattle, Washington 98195, USA
| | - Sergey A Shiryev
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA
| | - Aleksandr Morgulis
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA
| | - Urvashi Surti
- Department of Pathology and Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - Wesley C Warren
- The Genome Institute at Washington University, St. Louis, Missouri 63108, USA
| | | | - Evan E Eichler
- Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA; Howard Hughes Medical Institute, University of Washington, Seattle, Washington 98195, USA
| | - Richard K Wilson
- The Genome Institute at Washington University, St. Louis, Missouri 63108, USA
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18
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Tian Y, Pan Q, Shang Y, Zhu R, Ye J, Liu Y, Zhong X, Li S, He Y, Chen L, Zhao J, Chen W, Peng Z, Wang R. MicroRNA-200 (miR-200) cluster regulation by achaete scute-like 2 (Ascl2): impact on the epithelial-mesenchymal transition in colon cancer cells. J Biol Chem 2014; 289:36101-15. [PMID: 25371200 DOI: 10.1074/jbc.m114.598383] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ascl2, a basic helix-loop-helix transcription factor, is a downstream target of WNT signaling that controls the fate of intestinal cryptic stem cells and colon cancer progenitor cells. However, its involvement in colon cancer and downstream molecular events is largely undefined; in particular, the mechanism by which Ascl2 regulates the plasticity of epithelial-mesenchymal transition (EMT) and mesenchymal-epithelial transition (MET) programs in colon cancer cells remains unknown. In this study, we systematically demonstrate that Ascl2 loss of function in colon cancer cells promotes MET by derepressing the expression of microRNA (miR)-200s (i.e. miR-200b, miR-200a, miR-429, miR-200c, and miR-141) and further activating their expression through a transcriptional mechanism that involves direct binding to the most proximal E-box (E-box2) in the miR-200b-a-429 promoter. Activation of miR-200s due to Ascl2 deficiency led to the inhibition of ZEB1/2 expression and the alteration of epithelial and mesenchymal features. Transfection of miR-200b, miR-200a, and miR-429 inhibitors into Ascl2-deficient colon cancer cells promoted the epithelial-mesenchymal transition in a reversible manner. Transfection of miR-200a or miR-429 inhibitors into Ascl2-deficient colon cancer cells increased cellular proliferation and migration. Ascl2 mRNA levels and the miR-200a, miR-200b, miR-200c, miR-141, or miR-429 levels in the colon cancerous samples were inversely correlated. These results provide the first evidence of a link between Ascl2 and miR-200s in the regulation of EMT-MET plasticity in colon cancer.
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Affiliation(s)
- Yin Tian
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Qiong Pan
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Yangyang Shang
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Rong Zhu
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and Department of Gastroenterology, Zunyi Medical University, Guizhou 563000, China
| | - Jun Ye
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Yun Liu
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Xiaoli Zhong
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Shanshan Li
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Yonghong He
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Lei Chen
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Jingjing Zhao
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Wensheng Chen
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Zhihong Peng
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
| | - Rongquan Wang
- From the Institute of Gastroenterology of People's Liberation Army, Southwest Hospital, Third Military Medical University, Chongqing 400038, China and
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