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McKenzie M, Lian GY, Pennel KA, Quinn JA, Jamieson NB, Edwards J. NFκB signalling in colorectal cancer: Examining the central dogma of IKKα and IKKβ signalling. Heliyon 2024; 10:e32904. [PMID: 38975078 PMCID: PMC11226910 DOI: 10.1016/j.heliyon.2024.e32904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 05/20/2024] [Accepted: 06/11/2024] [Indexed: 07/09/2024] Open
Abstract
The NFκB pathway, known as the central regulator of inflammation, has a well-established role in colorectal cancer (CRC) initiation, progression, and therapy resistance. Due to the pathway's overarching roles in CRC, there have been efforts to characterise NFκB family members and target the pathway for therapeutic intervention. Initial research illustrated that the canonical NFκB pathway, driven by central kinase IKKβ, was a promising target for drug intervention. However, dose limiting toxicities and specificity concerns have resulted in failure of IKKβ inhibitors in clinical trials. The field has turned to look at targeting the less dominant kinase, IKKα, which along with NFκB inducing kinase (NIK), drives the lesser researched non-canonical NFκB pathway. However prognostic studies of the non-canonical pathway have produced conflicting results. There is emerging evidence that IKKα is involved in other signalling pathways, which lie outside of canonical and non-canonical NFκB signalling. Evidence suggests that some of these alternative pathways involve a truncated form of IKKα, and this may drive poor cancer-specific survival in CRC. This review aims to explore the multiple components of NFκB signalling, highlighting that NIK may be the central kinase for non-canonical NFκB signalling, and that IKKα is involved in novel pathways which promote CRC.
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Affiliation(s)
- Molly McKenzie
- School of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, G61 1BD, UK
| | - Guang-Yu Lian
- School of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, G61 1BD, UK
| | - Kathryn A.F. Pennel
- School of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, G61 1BD, UK
| | - Jean A. Quinn
- School of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, G61 1BD, UK
| | - Nigel B. Jamieson
- School of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, G61 1BD, UK
| | - Joanne Edwards
- School of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow, G61 1BD, UK
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2
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Wang M, Zeng J, Tan H, Guo Q, Li X, Ling X, Zhang J, Song S, Deng Y. Anti-virulence and bactericidal activities of Stattic against Shigella sonnei. Appl Environ Microbiol 2023; 89:e0107423. [PMID: 38032177 PMCID: PMC10734500 DOI: 10.1128/aem.01074-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023] Open
Abstract
IMPORTANCE Shigella sonnei is a major human enteric pathogen that causes bacillary dysentery. The increasing spread of drug-resistant S. sonnei strains has caused an emergent need for the development of new antimicrobial agents against this pathogenic bacterium. In this study, we demonstrate that Stattic employs two antibacterial mechanisms against S. sonnei. It exerted both anti-virulence activity and bactericidal activity against S. sonnei, suggesting that it shows advantages over traditional antibiotics. Moreover, Stattic showed excellent synergistic effects with kanamycin, ampicillin, chloramphenicol, and gentamicin against S. sonnei. Our findings suggest that Stattic has promising potential for development as a new antibiotic or as an adjuvant to antibiotics for infections caused by S. sonnei.
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Affiliation(s)
- Mingfang Wang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Jia Zeng
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Huihui Tan
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Quan Guo
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Xia Li
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Xiwen Ling
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Jinyue Zhang
- School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Shihao Song
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
- School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Yinyue Deng
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
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3
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He J, Han J, Lin K, Wang J, Li G, Li X, Gao Y. PTEN/AKT and Wnt/β-catenin signaling pathways regulate the proliferation of Lgr5+ cells in liver cancer. Biochem Biophys Res Commun 2023; 683:149117. [PMID: 37857166 DOI: 10.1016/j.bbrc.2023.10.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/21/2023]
Abstract
The progression and spread of tumors are believed to be primarily caused by cancer stem cells (CSCs). Nevertheless, the task of focusing on CSCs for cancer treatment continues to be difficult. Lgr5, a G-protein-coupled receptor containing leucine-rich repeats, is highly expressed in different types of cancer and serves as a distinctive marker for cancer stem cells (CSCs). In this study, we employed the Cre-loxP system and Lgr5 tracking mice of male to selectively remove PTEN and β-catenin in Lgr5+ cells of DEN-induced liver cancer and monitor the behavior of Lgr5+ cells. The tracking data revealed that the activation of PTEN-mediated AKT signaling in Lgr5 led to a significant rise in the quantity of Lgr5+ cells, whereas the inhibition of Wnt/β-catenin signaling decreased the number of cells in DEN-induced liver cancer. Therefore, we have shown that the growth of Lgr5+ cells can be controlled by the PTEN/AKT and Wnt/β-catenin pathways, offering a potential treatment option for fighting against liver cancer.
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Affiliation(s)
- Jia He
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China; Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China
| | - Jimin Han
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Kaijun Lin
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Jingru Wang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Guiqiang Li
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Xiaohong Li
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Ying Gao
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China; Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China.
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Posey TA, Jacob J, Parkhurst A, Subramanian S, Francisco LE, Liang Z, Carmon KS. Loss of LGR5 through Therapy-induced Downregulation or Gene Ablation Is Associated with Resistance and Enhanced MET-STAT3 Signaling in Colorectal Cancer Cells. Mol Cancer Ther 2023; 22:667-678. [PMID: 36921315 PMCID: PMC10164100 DOI: 10.1158/1535-7163.mct-22-0415] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/19/2022] [Accepted: 03/10/2023] [Indexed: 03/17/2023]
Abstract
Leucine-rich repeat-containing, G protein-coupled receptor 5 (LGR5) is highly expressed in colorectal cancer and cancer stem cells (CSCs) that play important roles in tumor initiation, progression, and metastasis. Loss of LGR5 has been shown to enhance therapy resistance. However, the molecular mechanisms that mediate this resistance remain elusive. In this study, we demonstrate conversion of LGR5+ colorectal cancer cells to an LGR5- state in response to chemotherapy, LGR5- targeted antibody-drug conjugates (ADCs), or LGR5 gene ablation led to activation of STAT3. Further investigation revealed increased STAT3 activation occurred as a result of increased mesenchymal epithelial transition (MET) factor receptor activity. LGR5 overexpression decreased MET-STAT3 activity and sensitized colorectal cancer cells to therapy. STAT3 inhibition suppressed MET phosphorylation, while constitutively active STAT3 reduced LGR5 levels and increased MET activity, suggesting a potential feedback mechanism. Combination treatment of MET-STAT3 inhibitors with irinotecan or antibody-drug conjugates (ADCs) substantiated synergistic effects in colorectal cancer cells and tumor organoids. In colorectal cancer xenografts, STAT3 inhibition combined with irinotecan enhanced tumor growth suppression and prolonged survival. These findings suggest a mechanism by which drug-resistant LGR5- colorectal cancer cells acquire a survival advantage through activation of MET-STAT3 and provide rationale for new treatment strategies to target colorectal cancer.
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Affiliation(s)
- Tressie A. Posey
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
| | - Joan Jacob
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
| | - Ashlyn Parkhurst
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
| | - Shraddha Subramanian
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
| | - Liezl E. Francisco
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
| | - Zhengdong Liang
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
| | - Kendra S. Carmon
- Center for Translational Cancer Research, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX
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Regulatory T Cells but Not Tumour-Infiltrating Lymphocytes Correlate with Tumour Invasion Depth in Basal Cell Carcinoma. Diagnostics (Basel) 2022; 12:diagnostics12122987. [PMID: 36552993 PMCID: PMC9776706 DOI: 10.3390/diagnostics12122987] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 12/03/2022] Open
Abstract
Basal cell carcinoma (BCC) is the most common skin malignancy worldwide. Current evidence suggests tumour-infiltrating lymphocytes (TILs) may influence the clinical outcomes of patients with BCC. The present study aimed to profile the infiltrative characteristics of stromal TILs and regulatory T cells (Treg cells) in the tumour centre (TC), tumour periphery (TP), and normal adjacent tissue (NAT) of BCC. A total of 111 samples from 43 cutaneous BCC cases were examined for TIL (CD3+) and Treg cell (FOXP3+/CD3+) expression using immunohistochemical techniques. The correlations of Treg cells with TILs, invasion depth, and tumour morphological risk were analysed. We identified a high mean proportion of Treg cells within the tumour (TC = 46.9%, TP = 56.1%, NAT = 51.8%) despite a relatively low median of TILs (TC = 12.7%, TP = 10.3%, NAT = 3.6%), supporting the classification of BCC as a cold tumour. A significant positive correlation was observed between the proportion of Treg cells and sTILs (ρ = 0.325, p < 0.001), suggesting a predominant role of TILs in the infiltration of Treg cells. An inverse correlation discovered between Treg cells and tumour invasion depth (r = −0.36, p = 0.017) might indicate Treg cells’ anti-tumour capacity in BCC.
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Chiang HY, Lu HH, Sudhakar JN, Chen YW, Shih NS, Weng YT, Shui JW. IL-22 initiates an IL-18-dependent epithelial response circuit to enforce intestinal host defence. Nat Commun 2022; 13:874. [PMID: 35169117 PMCID: PMC8847568 DOI: 10.1038/s41467-022-28478-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 01/26/2022] [Indexed: 12/19/2022] Open
Abstract
IL-18 is emerging as an IL-22-induced and epithelium-derived cytokine which contributes to host defence against intestinal infection and inflammation. In contrast to its known role in Goblet cells, regulation of barrier function at the molecular level by IL-18 is much less explored. Here we show that IL-18 is a bona fide IL-22-regulated gate keeper for intestinal epithelial barrier. IL-22 promotes crypt immunity both via induction of phospho-Stat3 binding to the Il-18 gene promoter and via Il-18 independent mechanisms. In organoid culture, while IL-22 primarily increases organoid size and inhibits expression of stem cell genes, IL-18 preferentially promotes organoid budding and induces signature genes of Lgr5+ stem cells via Akt-Tcf4 signalling. During adherent-invasive E. coli (AIEC) infection, systemic administration of IL-18 corrects compromised T-cell IFNγ production and restores Lysozyme+ Paneth cells in Il-22-/- mice, but IL-22 administration fails to restore these parameters in Il-18-/- mice, thereby placing IL-22-Stat3 signalling upstream of the IL-18-mediated barrier defence function. IL-18 in return regulates Stat3-mediated anti-microbial response in Paneth cells, Akt-Tcf4-triggered expansion of Lgr5+ stem cells to facilitate tissue repair, and AIEC clearance by promoting IFNγ+ T cells.
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Affiliation(s)
- Hung-Yu Chiang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hsueh-Han Lu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | | | - Yu-Wen Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan
| | - Nien-Shin Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yi-Ting Weng
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jr-Wen Shui
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.
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REGγ regulates hair cycle by activating Lgr5 positive hair follicle stem cells. J Dermatol Sci 2021; 102:101-108. [PMID: 33933312 DOI: 10.1016/j.jdermsci.2021.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 03/27/2021] [Accepted: 04/12/2021] [Indexed: 01/14/2023]
Abstract
BACKGROUND REGγ acts as a proteasome activating factor mediating proteasome degradation of substrate proteins in an ATP and ubiquitination independent manner and also as an important regulator of cell cycle, proliferation and apoptosis. Hair cycle involves dynamic, continuous morphological changes of three stages (anagen, catagen and telogen). OBJECTIVE The function of REGγ in hair cycling is still unclear. METHODS Here, we used REGγ knockout 293 T cells, inducible 293WT and 293N151Y cell, REGγ knockout mice to identify the novel molecular mechanism of REGγ in regulating hair follicle stem cells. RESULTS In the present study, we found that REGγ deletion markedly delayed the transition of hair follicles from telogen to anagen and hair regeneration in mice. We also observed significant decrease of hair follicle stem cell number, stem-like property and proliferation ability. Interestingly, the results from real-time PCR, FACS, Western Blot and immunofluorescent analysis showed that REGγ deletion could greatly downregulate Lgr5 expression in the hair follicles. Meanwhile, REGγ was demonstrated to directly interact with LHX2 and promotes its degradation. Importantly, REGγ specific deletion in Lgr5+ stem cells induced the marked delay of hair regeneration after depilation. CONCLUSION These data together indicate that REGγ was a new mediator of Lgr5 expression in hair follicle at least partly by promoting the degradation of its suppressive transcription factor LHX2. It seemed that REGγ regulated hair anagen entry and hair regrowth by activating Lgr5 positive hair follicle stem cells.
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Kawasaki K, Kuboki S, Furukawa K, Takayashiki T, Takano S, Ohtsuka M. LGR5 induces β-catenin activation and augments tumour progression by activating STAT3 in human intrahepatic cholangiocarcinoma. Liver Int 2021; 41:865-881. [PMID: 33249719 DOI: 10.1111/liv.14747] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS LGR5 enhances Wnt-β-catenin signalling; however, involvement of LGR5 or Wnt-β-catenin signalling in ICC progression has not been reported. METHODS Functions and regulations of LGR5-mediated β-catenin activation in ICC progression were evaluated using surgical specimens collected from 61 ICC patients or 2 ICC cell lines. RESULTS LGR5 expression was increased in some cases of ICC. It was positively correlated with β-catenin activation, OLFM4 expression and STAT3 activation, and negatively correlated with GRIM19 expression in ICC, thereby enhancing cancer stem cell (CSC)-like property and EMT. High LGR5 expression was an independent factor for poor prognosis in ICC after operation. In vitro, Wnt inhibition by IWP-2 suppressed β-catenin activation, OLFM4 expression and STAT3 activation. IWP-2 treatment decreased expression of EpCAM, CD133, vimentin and increased E-cadherin expression. The rate of mesenchymal cells was decreased and cell invasiveness was suppressed after IWP-2 treatment, suggesting that Wnt-β-catenin signalling enhanced CSC-like property and EMT by activating STAT3. In addition, LGR5 knockdown inhibited β-catenin activation, resulting in suppression of β-catenin-induced STAT3 activation through inhibition of OLFM4-GRIM19 cascade. As these results, LGR5 knockdown suppressed CSC-like property and EMT. Therefore, LGR5 was a key regulator for β-catenin activation, and β-catenin was unable to be activated without LGR5. CONCLUSIONS LGR5 is essential for β-catenin activation induced by Wnt signalling. Activated β-catenin further activates STAT3 and enhances CSC-like property and EMT, leading to aggressive tumour progression and poor prognosis in patients with ICC. Therefore, LGR5 is an excellent prognostic predictor and a promising therapeutic target for ICC.
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Affiliation(s)
- Keishi Kawasaki
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Satoshi Kuboki
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Katsunori Furukawa
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tsukasa Takayashiki
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shigetsugu Takano
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masayuki Ohtsuka
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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Assistant Diagnosis of Basal Cell Carcinoma and Seborrheic Keratosis in Chinese Population Using Convolutional Neural Network. JOURNAL OF HEALTHCARE ENGINEERING 2020; 2020:1713904. [PMID: 32832046 PMCID: PMC7422221 DOI: 10.1155/2020/1713904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 06/30/2020] [Accepted: 07/06/2020] [Indexed: 11/23/2022]
Abstract
Objectives To evaluate CNN models' performance of identifying the clinical images of basal cell carcinoma (BCC) and seborrheic keratosis (SK) and to compare their performance with that of dermatologists. Methods We constructed a Chinese skin diseases dataset which includes 1456 BCC and 1843 SK clinical images and the corresponding medical history. We evaluated the performance using four mainstream CNN structures and transfer learning techniques. We explored the interpretability of the CNN model and compared its performance with that of 21 dermatologists. Results The fine-tuned InceptionResNetV2 achieved the best performance, with an accuracy and area under the curve of 0.855 and 0.919, respectively. Further experimental results suggested that the CNN model was not only interpretable but also had a performance comparable to that of dermatologists. Conclusions This study is the first on the assistant diagnosis of BCC and SK based on the proposed dataset. The promising results suggested that CNN model's performance was comparable to that of expert dermatologists.
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Ghosh S, Chakraborty J, Goswami A, Bhowmik S, Roy S, Ghosh A, Dokania S, Kumari P, Datta S, Chowdhury A, Bhattacharyya SN, Chatterjee R, Banerjee S. A novel microRNA boosts hyper-β-oxidation of fatty acids in liver by impeding CEP350-mediated sequestration of PPARα and thus restricts chronic hepatitis C. RNA Biol 2020; 17:1352-1363. [PMID: 32507013 DOI: 10.1080/15476286.2020.1768353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Imbalance in lipid metabolism induces steatosis in liver during Chronic hepatitis C (CHC). Contribution of microRNAs in regulating lipid homoeostasis and liver disease progression is well established using small RNA-transcriptome data. Owing to the complexity in the development of liver diseases, the existence and functional importance of yet undiscovered regulatory miRNAs in disease pathogenesis was explored in this study using the unmapped sequences of the transcriptome data of HCV-HCC liver tissues following miRDeep2.pl pipeline. MicroRNA-c12 derived from the first intron of LGR5 of chromosome 12 was identified as one of the miRNA like sequences retrieved in this analysis that showed human specific origin. Northern blot hybridization has proved its existence in the hepatic cell line. Enrichment of premiR-c12 in dicer-deficient cells and miR-c12 in Ago2-RISC complex clearly suggested that it followed canonical miRNA biogenesis pathway and accomplished its regulatory function. Expression of this miRNA was quite low in CHC tissues than normal liver implying HCV-proteins might be regulating its biogenesis. Promoter scanning and ChIP analysis further revealed that under expression of p53 and hyper-methylation of STAT3 binding site upon HCV infection restricted its expression in CHC tissues. Centrosomal protein 350 (CEP350), which sequestered PPARα, was identified as one of the targets of miR-c12 using Miranda and validated by luciferase assay/western blot analysis. Furthermore, reduced triglyceride accumulation and enhanced PPARα mediated transcription of β-oxidation genes upon restoration of miR-c12 in liver cells suggested its role in lipid catabolism. Thus this study is reporting miR-c12 for the first time and showed its' protective role during chronic HCV infection.
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Affiliation(s)
- Suchandrima Ghosh
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Joyeeta Chakraborty
- Human Genetics Unit, Indian Statistical Institute , Kolkata, Human Genetics Unit, India
| | - Avijit Goswami
- Department of Molecular Genetics, Indian Institute of Chemical Biology , Kolkata, India
| | - Sayantani Bhowmik
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Susree Roy
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Amit Ghosh
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Sakshi Dokania
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Priyanka Kumari
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Simanti Datta
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | - Abhijit Chowdhury
- Department of Hepatology, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
| | | | - Raghunath Chatterjee
- Human Genetics Unit, Indian Statistical Institute , Kolkata, Human Genetics Unit, India
| | - Soma Banerjee
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research , Kolkata, India
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Quan Z, Zhang BB, Yin F, Du J, Zhi YT, Xu J, Song N. DDX5 Silencing Suppresses the Migration of Basal cell Carcinoma Cells by Downregulating JAK2/STAT3 Pathway. Technol Cancer Res Treat 2020; 18:1533033819892258. [PMID: 31870221 PMCID: PMC6931141 DOI: 10.1177/1533033819892258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Basal cell carcinoma is driven by the aberrant activation of hedgehog signaling. DEAD
(Asp-Glu-Ala-Asp) box protein 5 is frequently overexpressed in human cancer cells and
associated with the tumor growth and invasion. The purpose of this study was to
investigate the role of DEAD (Asp-Glu-Ala-Asp) box protein 5 in the growth, migration, and
invasion of basal cell carcinoma. The role of DEAD (Asp-Glu-Ala-Asp) box protein 5 was
detected by quantitative real-time polymerase chain reaction, Western blot, and terminal
deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling assay in
basal cell carcinoma cells. The associations between JAK2/STAT3 pathway and DEAD
(Asp-Glu-Ala-Asp) box protein 5 were analyzed in basal cell carcinoma cells. Results
showed that DEAD (Asp-Glu-Ala-Asp) box protein 5 is overexpressed in basal cell carcinoma
cells. DEAD (Asp-Glu-Ala-Asp) box protein 5 knockdown inhibited the migration and invasion
of basal cell carcinoma cells. DEAD (Asp-Glu-Ala-Asp) box protein 5 knockdown increased
the apoptosis of basal cell carcinoma cells induced by tunicamycin. Results found that
DEAD (Asp-Glu-Ala-Asp) box protein 5 knockdown increased JAK2 and STAT3 expression in
basal cell carcinoma cells. JAK2 inhibitor decreased STAT3 expression and abolished the
inhibitory effects of DEAD (Asp-Glu-Ala-Asp) box protein 5 silencing on migration and
invasion in basal cell carcinoma cells. In conclusion, these results indicate that DEAD
(Asp-Glu-Ala-Asp) box protein 5 is a potential target for inhibiting basal cell carcinoma
cells growth, migration, and invasion by downregulating JAK2/STAT3 pathway.
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Affiliation(s)
- Zhe Quan
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bei-Bei Zhang
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fang Yin
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiru Du
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuan-Ting Zhi
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin Xu
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ningjing Song
- Department of Dematology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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12
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A STAT3 of Addiction: Adipose Tissue, Adipocytokine Signalling and STAT3 as Mediators of Metabolic Remodelling in the Tumour Microenvironment. Cells 2020; 9:cells9041043. [PMID: 32331320 PMCID: PMC7226520 DOI: 10.3390/cells9041043] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
Metabolic remodelling of the tumour microenvironment is a major mechanism by which cancer cells survive and resist treatment. The pro-oncogenic inflammatory cascade released by adipose tissue promotes oncogenic transformation, proliferation, angiogenesis, metastasis and evasion of apoptosis. STAT3 has emerged as an important mediator of metabolic remodelling. As a downstream effector of adipocytokines and cytokines, its canonical and non-canonical activities affect mitochondrial functioning and cancer metabolism. In this review, we examine the central role played by the crosstalk between the transcriptional and mitochondrial roles of STAT3 to promote survival and further oncogenesis within the tumour microenvironment with a particular focus on adipose-breast cancer interactions.
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Cancer progression is mediated by proline catabolism in non-small cell lung cancer. Oncogene 2020; 39:2358-2376. [PMID: 31911619 DOI: 10.1038/s41388-019-1151-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 12/05/2019] [Accepted: 12/23/2019] [Indexed: 12/15/2022]
Abstract
Dysregulated metabolism contributes to cancer initiation and progression, but the key drivers of these pathways are just being discovered. Here, we report a critical role for proline catabolism in non-small cell lung cancer (NSCLC). Proline dehydrogenase (PRODH) is activated to reduce proline levels by the chromatin remodeling factor lymphoid-specific helicase (LSH), an epigenetic driver of NSCLC. PRODH promotes NSCLC tumorigenesis by inducing epithelial to mesenchymal transition (EMT) and IKKα-dependent inflammatory genes, including CXCL1, LCN2, and IL17C. Consistently, proline addition promotes the expression of these inflammatory genes, as well as EMT, tumor cell proliferation, and migration in vitro and tumor growth in vivo, while the depletion or inhibition of PRODH blocks these phenotypes. In summary, we reveal an essential metabolic pathway amenable to targeting in NSCLC.
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Xu L, Lin W, Wen L, Li G. Lgr5 in cancer biology: functional identification of Lgr5 in cancer progression and potential opportunities for novel therapy. Stem Cell Res Ther 2019; 10:219. [PMID: 31358061 PMCID: PMC6664754 DOI: 10.1186/s13287-019-1288-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cancer remains one of the leading lethal diseases worldwide. Identifying biomarkers of cancers might provide insights into the strategies for the development of novel targeted anti-cancer therapies. Leucine-rich repeat-containing G protein-coupled receptor 5 (Lgr5) has been recently discovered as a candidate marker of cancer stem cell populations. Aberrant increased expression of Lgr5 may represent one of the most common molecular alterations in some human cancers, leading to long-term potentiation of canonical Wnt/β-catenin signaling. On the other hand, however, Lgr5-mediated suppression in canonical Wnt/β-catenin signaling has also been reported in certain cancers, such as B cell malignancies. Until now, therapeutic approaches targeting Lgr5-associated signaling axis are not yet clinically available. Increasing evidence have indicated that endogenous Lgr5+ cell population is implicated in tumor initiation, progression, and metastasis. This review is to summarize our current knowledge about the importance of Lgr5 in cancer biology and the underlying molecular mechanisms of Lgr5-mediated tumor-promoting/suppressive activities, as well as potentially useful preventive strategies in treating tumor. Therefore, targeted therapeutic modulation of Lgr5+ cancer cell population by targeting Wnt/β-catenin signaling through targeted drug delivery system or targeted genome editing might be promising for potential novel anti-cancer treatments. Simultaneously, combination of therapeutics targeting both Lgr5+ and Lgr5- cancer cells may deserve further consideration considering the plasticity of cancer cells. Also, a more specific targeting of cancer cells using double biomarkers may be much safer and more effective for anti-cancer therapy.
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Affiliation(s)
- Liangliang Xu
- Key Laboratory of Orthopaedics and Traumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, People’s Republic of China
- Laboratory of Orthopaedics and Traumatology, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, People’s Republic of China
| | - Weiping Lin
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR PRC
- Stem Cells and Regenerative Medicine Laboratory, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR PRC
| | - Longping Wen
- Nanobio Laboratory, Institute of Life Sciences, South China University of Technology, Guangzhou, Guangdong People’s Republic of China
| | - Gang Li
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR PRC
- Stem Cells and Regenerative Medicine Laboratory, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR PRC
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, People’s Republic of China
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Neagu M, Constantin C, Caruntu C, Dumitru C, Surcel M, Zurac S. Inflammation: A key process in skin tumorigenesis. Oncol Lett 2019; 17:4068-4084. [PMID: 30944600 PMCID: PMC6444305 DOI: 10.3892/ol.2018.9735] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/02/2018] [Indexed: 01/01/2023] Open
Abstract
The extremely delicate shift from an inflammatory process to tumorigenesis is a field of major scientific interest. While the inflammation induced by environmental agents has well known underlying mechanisms, less is known concerning the oncogenic changes that follow an inflammatory chronic status in the tissue microenvironment that can lead to pro-tumorigenic processes. Regardless of the origin of the environmental factors, the maintenance of an inflammatory microenvironment is a clear condition that favors tumorigenesis. Inflammation sustains the proliferation and survival of malignant transformed cells, can promote angiogenesis and metastatic processes, can negatively regulate the antitumoral adaptive and innate immune responses and may alter the efficacy of therapeutic agents. There is an abundance of studies focusing on molecular pathways that trigger inflammation-mediated tumorigenesis, and these data have revealed a series of biomarkers that can improve the diagnosis and prognosis in oncology. In skin there is a clear connection between tissue destruction, inflammation and tumor onset. Inflammation is a self-limiting process in normal physiological conditions, while tumor is a constitutive process activating new pro-tumor mechanisms. Among skin cancers, the most commonly diagnosed skin cancers, squamous cell carcinoma and basal cell carcinoma (BCC) have important inflammatory components. The most aggressive skin cancer, melanoma, is extensively research in regards to the new context of novel developed immune-therapies. In skin cancers, inflammatory markers can find their place in the biomarker set for improvement of diagnosis and prognosis.
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Affiliation(s)
- Monica Neagu
- Immunobiology Laboratory, ‘Victor Babes’ National Institute of Pathology, 050096 Bucharest, Romania
- Faculty of Biology, University of Bucharest, 050107 Bucharest, Romania
- Department of Pathology, Colentina Clinical Hospital, 020125 Bucharest, Romania
| | - Carolina Constantin
- Immunobiology Laboratory, ‘Victor Babes’ National Institute of Pathology, 050096 Bucharest, Romania
- Department of Pathology, Colentina Clinical Hospital, 020125 Bucharest, Romania
| | - Constantin Caruntu
- Department of Physiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Carmen Dumitru
- Department of Pathology, Colentina Clinical Hospital, 020125 Bucharest, Romania
| | - Mihaela Surcel
- Immunobiology Laboratory, ‘Victor Babes’ National Institute of Pathology, 050096 Bucharest, Romania
- Faculty of Biology, University of Bucharest, 050107 Bucharest, Romania
| | - Sabina Zurac
- Department of Pathology, Colentina Clinical Hospital, 020125 Bucharest, Romania
- Department of Pathology, Faculty of Dental Medicine, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
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Paul A, Edwards J, Pepper C, Mackay S. Inhibitory-κB Kinase (IKK) α and Nuclear Factor-κB (NFκB)-Inducing Kinase (NIK) as Anti-Cancer Drug Targets. Cells 2018; 7:E176. [PMID: 30347849 PMCID: PMC6210445 DOI: 10.3390/cells7100176] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/15/2018] [Accepted: 10/17/2018] [Indexed: 12/23/2022] Open
Abstract
The cellular kinases inhibitory-κB kinase (IKK) α and Nuclear Factor-κB (NF-κB)-inducing kinase (NIK) are well recognised as key central regulators and drivers of the non-canonical NF-κB cascade and as such dictate the initiation and development of defined transcriptional responses associated with the liberation of p52-RelB and p52-p52 NF-κB dimer complexes. Whilst these kinases and downstream NF-κB complexes transduce pro-inflammatory and growth stimulating signals that contribute to major cellular processes, they also play a key role in the pathogenesis of a number of inflammatory-based conditions and diverse cancer types, which for the latter may be a result of background mutational status. IKKα and NIK, therefore, represent attractive targets for pharmacological intervention. Here, specifically in the cancer setting, we reflect on the potential pathophysiological role(s) of each of these kinases, their associated downstream signalling outcomes and the stimulatory and mutational mechanisms leading to their increased activation. We also consider the downstream coordination of transcriptional events and phenotypic outcomes illustrative of key cancer 'Hallmarks' that are now increasingly perceived to be due to the coordinated recruitment of both NF-κB-dependent as well as NF-κB⁻independent signalling. Furthermore, as these kinases regulate the transition from hormone-dependent to hormone-independent growth in defined tumour subsets, potential tumour reactivation and major cytokine and chemokine species that may have significant bearing upon tumour-stromal communication and tumour microenvironment it reiterates their potential to be drug targets. Therefore, with the emergence of small molecule kinase inhibitors targeting each of these kinases, we consider medicinal chemistry efforts to date and those evolving that may contribute to the development of viable pharmacological intervention strategies to target a variety of tumour types.
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Affiliation(s)
- Andrew Paul
- Strathclyde Institute of Pharmacy and Biomedical Sciences, 161 Cathedral Street, University of Strathclyde, Glasgow G4 0NR, UK.
| | - Joanne Edwards
- Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK.
| | - Christopher Pepper
- Brighton and Sussex Medical School, University of Sussex, Brighton BN1 9PX, UK.
| | - Simon Mackay
- Strathclyde Institute of Pharmacy and Biomedical Sciences, 161 Cathedral Street, University of Strathclyde, Glasgow G4 0NR, UK.
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Runx1-Stat3 signaling regulates the epithelial stem cells in continuously growing incisors. Sci Rep 2018; 8:10906. [PMID: 30026553 PMCID: PMC6053438 DOI: 10.1038/s41598-018-29317-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 07/09/2018] [Indexed: 11/08/2022] Open
Abstract
Rodent incisors grow permanently and the homeostasis of enamel production is maintained by a continuous supply of epithelial progenitors from putative stem cells in the cervical loop. We herein report that Runx1 regulates the Lgr5-expressing epithelial stem cells and their subsequent continuous differentiation into ameloblasts. Mice deficient in epithelial Runx1 demonstrate remarkable shortening of the incisors with underdevelopment of the cervical loop and enamel defects. In this mutant cervical loop, the proliferation of the dental epithelium was significantly disturbed and the expression of Lgr5 and enamel matrix proteins was remarkably downregulated. Interestingly, the expression of Socs3, an inhibitor of Stat3 signaling, was upregulated and Stat3 phosphorylation was suppressed specifically in the mutant cervical loop. The expression of Lgr5 and the enamel matrix protein in the wild-type incisor germs is disturbed by pharmaceutical Stat3 inhibition in vitro., of. Conversely, pharmaceutical activation of Stat3 rescues the defective phenotypes of the Runx1 mutant with upregulated Lgr5 and enamel matrix protein genes. The present results provide the first evidence of the role of Runx1 regulates the Lgr5-expressing epithelial stem cells and differentiation of ameloblast progenitors in the developing incisors. Our study also demonstrates that Stat3 modulates the Runx1-Lgr5 axis in the cervical loop.
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18
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Diverse mechanisms for endogenous regeneration and repair in mammalian organs. Nature 2018; 557:322-328. [PMID: 29769669 DOI: 10.1038/s41586-018-0073-7] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 03/07/2018] [Indexed: 12/11/2022]
Abstract
Mammalian organs comprise an extraordinary diversity of cell and tissue types. Regenerative organs, such as the skin and gastrointestinal tract, use resident stem cells to maintain tissue function. Organs with a lower cellular turnover, such as the liver and lungs, mostly rely on proliferation of committed progenitor cells. In many organs, injury reveals the plasticity of both resident stem cells and differentiated cells. The ability of resident cells to maintain and repair organs diminishes with age, whereas, paradoxically, the risk of cancer increases. New therapeutic approaches aim to harness cell plasticity for tissue repair and regeneration while avoiding the risk of malignant transformation of cells.
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Yan B, Liu S, Shi Y, Liu N, Chen L, Wang X, Xiao D, Liu X, Mao C, Jiang Y, Lai W, Xin X, Tang CE, Luo D, Tan T, Jia J, Liu Y, Yang R, Huang J, Zhou H, Cheng Y, Cao Y, Yu W, Muegge K, Tao Y. Activation of AhR with nuclear IKKα regulates cancer stem-like properties in the occurrence of radioresistance. Cell Death Dis 2018; 9:490. [PMID: 29706625 PMCID: PMC5924755 DOI: 10.1038/s41419-018-0542-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/04/2018] [Accepted: 03/27/2018] [Indexed: 12/19/2022]
Abstract
Most cancer patients receive radiotherapy in the course of their disease and the occurrence of radioresistance is associated with poor prognosis. The molecular pathways that drive enhanced tumorigenic potential during the development of radioresistance are poorly understood. Here, we demonstrate that aryl hydrocarbon receptor (AhR) plays a vital role in the maintenance of cancer stem-like properties. AhR promotes the cancer stem-like phenotype and drives metastasis by directly targeting the promoters of 'stemness' genes, such as the ATP-binding cassette sub-family G member 2 (ABCG2) gene. Moreover, the radioresistant sublines display high levels of oncometabolites including α-ketoglutarate, and treatment of cancer cells with α-ketoglutarate enhances their stem-like properties in an AhR activation-dependent manner. IKKα directly activates stemness-related genes through an interaction with AhR as a bone fide chromatin modifier. Thus, AhR is functionally linked with cancer stem-like properties, and it drives tumorigenesis in the occurrence of radioresistance.
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Affiliation(s)
- Bin Yan
- Institute of Medical Sciences, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Shuang Liu
- Institute of Medical Sciences, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
| | - Ying Shi
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Na Liu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Ling Chen
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Xiang Wang
- Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Desheng Xiao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Xiaoli Liu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Chao Mao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Yiqun Jiang
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Weiwei Lai
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Xing Xin
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Can-E Tang
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Dixian Luo
- National and Local Joint Engineering Laboratory of High-throughput Molecular Diagnosis Technology, Translational Medicine Institute, the First People's Hospital of Chenzhou, University of South China, 102 Luojiajing Road, Chenzhou, 423000, Hunan, China
| | - Tan Tan
- National and Local Joint Engineering Laboratory of High-throughput Molecular Diagnosis Technology, Translational Medicine Institute, the First People's Hospital of Chenzhou, University of South China, 102 Luojiajing Road, Chenzhou, 423000, Hunan, China
| | - Jiantao Jia
- Department of Pathophysiology, Changzhi Medical College, Changzhi, Shanxi, China
| | - Yating Liu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Rui Yang
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Jun Huang
- Department of Neurosugery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410078, Hunan, China
| | - Hu Zhou
- Shanghai Institute of Material Medica, Chinese Academy of Sciences (CAS), 555 Zu Chongzhi Road, Zhangjiang Hi-Tech Park, 201203, Shanghai, China
| | - Yan Cheng
- Department of Pharmacology, School of Pharmaceutical Sciences, Central South University, Changsha, 410078, Hunan, China
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China
| | - Weishi Yu
- Cipher Gene (Beijing) Co. Ltd., 100089, Beijing, China
| | - Kathrin Muegge
- Mouse Cancer Genetics Program, National Cancer Institute, Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Yongguang Tao
- Institute of Medical Sciences, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
- Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha, 410078, Hunan, China.
- Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China.
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Baicalin hydrate inhibits cancer progression in nasopharyngeal carcinoma by affecting genome instability and splicing. Oncotarget 2017; 9:901-914. [PMID: 29416665 PMCID: PMC5787522 DOI: 10.18632/oncotarget.22868] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 09/20/2017] [Indexed: 01/08/2023] Open
Abstract
Baicalin hydrate (BH), a natural compound, has been investigated for many years because of its traditional medicinal properties. However, the anti-tumor activities of BH and its epigenetic role in NPC have not been elucidated. In this study, we identified that BH inhibits NPC cell growth in vivo and in vitro by inducing apoptosis and cell cycle arrest. BH epigenetically regulated genome instability by up-regulating the expression of satellite 2 (Sat2), alpha satellite (α-Sat), and major satellite (Major-Sat). BH also increased the level of IKKα, Suv39H1, and H3K9me3 and decreased LSH expression. Interestingly, BH promoted the splicing of Suv39H1 via the enhancement of m6A RNA methylation, rather than DNA methylation. Taken together, our results demonstrated that BH has an anti-tumor role in NPC and revealed a unique role of BH in genome instability and splicing in response to DNA damage.
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The value of detecting immunoglobulin gene rearrangements in the diagnosis of B-cell lymphoma. Oncotarget 2017; 8:77009-77019. [PMID: 29100365 PMCID: PMC5652759 DOI: 10.18632/oncotarget.20330] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 06/29/2017] [Indexed: 11/28/2022] Open
Abstract
Objective To discuss the clinical value of immunoglobulin gene rearrangements in the diagnosis of B-cell lymphoma. Methods A total of 209 cases of B-cell lymphomas and 35 cases of reactive lymphoid hyperplasia were selected for DNA extraction and PCR amplification using the BIOMED-2 primer system. Gel electrophoresis of heteroduplexes was used to analyze immunoglobulin gene rearrangements. Results A total of 209 cases of B-cell lymphoma, including 69 extranodal marginal zone B-cell lymphomas of mucosa-associated lymphoid tissue, 63 diffuse large B-cell lymphomas, 39 follicular lymphomas, 15 small lymphocytic lymphomas, 6 plasmacytomas, 6 mantle cell lymphomas, 7 nodal marginal zone B-cell lymphomas, and 4 lymphoplasmacytoid lymphomas, were examined. Immunoglobulin gene rearrangements were found in all 209 cases, with 93 IGHA, 122 IGHB, 98 IGHC, 167 IGK, 100 IGL, 167 IGHA/B/C, 204 IGH/IGK, 209 IGH/IGK/IGL, 129 IGH+IGK, 81 IGH+IGL, 83 IGK+IGL and 68 IGH+IGK+IGL gene rearrangements. Immunoglobulin gene rearrangements were not found in the 35 cases of reactive lymphoid hyperplasia. IGH and IGK gene rearrangements were mainly found in mantle cell lymphomas, small lymphocytic lymphomas, extranodal marginal zone B-cell lymphomas of mucosa-associated lymphoid tissue and diffuse large B-cell lymphomas. The IGH gene rearrangement was mainly found in lymphoplasmacytoid lymphomas and follicular lymphomas. IGK and IGL gene rearrangements were mainly found in plasmocytoma, and the IGK gene rearrangement was mainly found in nodal marginal zone B-cell lymphomas. Conclusions The BIOMED-2 standardized immunoglobulin gene rearrangement detection system is an important tool in B-cell lymphoma diagnosis. Analysis of IGH, IGK and IGL gene rearrangements is valuable in confirming the classification of B-cell NHL.
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Colomer C, Marruecos L, Vert A, Bigas A, Espinosa L. NF-κB Members Left Home: NF-κB-Independent Roles in Cancer. Biomedicines 2017; 5:biomedicines5020026. [PMID: 28587092 PMCID: PMC5489812 DOI: 10.3390/biomedicines5020026] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/15/2017] [Accepted: 05/19/2017] [Indexed: 02/08/2023] Open
Abstract
Nuclear factor-κB (NF-κB) has been long considered a master regulator of inflammation and immune responses. Additionally, aberrant NF-κB signaling has been linked with carcinogenesis in many types of cancer. In recent years, the study of NF-κB members in NF-κB unrelated pathways provided novel attractive targets for cancer therapy, specifically linked to particular pathologic responses. Here we review specific functions of IκB kinase complexes (IKKs) and IκBs, which have distinctly tumor promoting or suppressing activities in cancer. Understanding how these proteins are regulated in a tumor-related context will provide new opportunities for drug development.
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Affiliation(s)
- Carlota Colomer
- Stem Cells and Cancer Research Laboratory, CIBERONC. Institut Hospital del Mar Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain.
| | - Laura Marruecos
- Stem Cells and Cancer Research Laboratory, CIBERONC. Institut Hospital del Mar Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain.
| | - Anna Vert
- Stem Cells and Cancer Research Laboratory, CIBERONC. Institut Hospital del Mar Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain.
| | - Anna Bigas
- Stem Cells and Cancer Research Laboratory, CIBERONC. Institut Hospital del Mar Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain.
| | - Lluis Espinosa
- Stem Cells and Cancer Research Laboratory, CIBERONC. Institut Hospital del Mar Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain.
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Liu S, Tao YG. Chromatin remodeling factor LSH affects fumarate hydratase as a cancer driver. CHINESE JOURNAL OF CANCER 2016; 35:72. [PMID: 27473869 PMCID: PMC4967323 DOI: 10.1186/s40880-016-0138-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 07/21/2016] [Indexed: 12/23/2022]
Abstract
Cancer metabolism and epigenetic alteration are two critical mechanisms for tumorigenesis and cancer progression; however, the dynamic interplay between them remains poorly understood. As reported in the article entitled "Chromatin remodeling factor LSH drives cancer progression by suppressing the activity of fumarate hydratase," which was recently published in Cancer Research, our group examined the physiological role of lymphocyte-specific helicase (LSH) in nasopharyngeal carcinoma (NPC) by focusing on cancer progression and the tricarboxylic acid cycle. We found that LSH was overexpressed in NPC, and its expression associated with Epstein-Barr virus infection. We also found that LSH directly suppressed fumarate hydratase (FH), a key component of the tricarboxylic acid cycle, in combination with euchromatic histone-lysine N-methyltransferase 2 (EHMT2), also known as G9a. Depletion of FH promoted epithelial-mesenchymal transition (EMT). Moreover, LSH controlled expression of tricarboxylic acid cycle intermediates that promote cancer progression, including EMT, through activation by inhibitor of nuclear factor kappa-B kinase alpha (IKKα), a chromatin modifier and transcriptional activator. Our study showed that LSH plays a critical role in cancer progression, which has important implications for the development of novel strategies to treat NPC.
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Affiliation(s)
- Shuang Liu
- Center for Medicine Research, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, P. R. China
| | - Yong-Guang Tao
- Center for Medicine Research, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, P. R. China. .,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, 410078, Hunan, P. R. China. .,Key Laboratory of Carcinogenesis and Cancer Invasion (Central South University), Ministry of Education, Changsha, 410078, Hunan, P. R. China.
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