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Vaicekauskaitė I, Dabkevičienė D, Šimienė J, Žilovič D, Čiurlienė R, Jarmalaitė S, Sabaliauskaitė R. ARID1A, NOTCH and WNT Signature in Gynaecological Tumours. Int J Mol Sci 2023; 24:ijms24065854. [PMID: 36982928 PMCID: PMC10057440 DOI: 10.3390/ijms24065854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/03/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
Ovarian cancer (OC) is among the deadliest gynaecologic malignancies in the world. The majority of OC patients are diagnosed at an advanced stage, with high-grade serous OC (HGSOC). The lack of specific symptoms and suitable screening strategies lead to short progression-free survival times in HGSOC patients. The chromatin-remodelling, WNT and NOTCH pathways are some of the most dysregulated in OC; thus their gene mutations and expression profile could serve as diagnostic or prognostic OC biomarkers. Our pilot study investigated mRNA expression of the SWI/SNF chromatin-remodelling complex gene ARID1A, NOTCH receptors, WNT pathway genes CTNNB1 and FBXW7 mRNA expression in two OC cell cultures as well as 51 gynaecologic tumour tissues. A four-gene panel consisting of ARID1A, CTNNB1, FBXW7 and PPP2R1A was used to investigate mutations in gynaecologic tumour tissue. All seven analysed genes were found to be significantly downregulated in OC when compared with non-malignant gynaecologic tumour tissues. NOTCH3 was also downregulated in SKOV3 cells when compared to A2780. Fifteen mutations were found in 25.5% (13/51) of the tissue samples. ARID1A predicted mutations were the most prevalent with alterations detected in 19% (6/32) HGSOC and 67% (6/9) of other OC cases. Thus, ARID1A and NOTCH/WNT-pathway-related changes could be useful diagnostic biomarkers in OC.
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Affiliation(s)
- Ieva Vaicekauskaitė
- National Cancer Institute, LT-08660 Vilnius, Lithuania
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-08412 Vilnius, Lithuania
| | - Daiva Dabkevičienė
- National Cancer Institute, LT-08660 Vilnius, Lithuania
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-08412 Vilnius, Lithuania
| | - Julija Šimienė
- National Cancer Institute, LT-08660 Vilnius, Lithuania
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-08412 Vilnius, Lithuania
| | - Diana Žilovič
- National Cancer Institute, LT-08660 Vilnius, Lithuania
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-08412 Vilnius, Lithuania
| | | | - Sonata Jarmalaitė
- National Cancer Institute, LT-08660 Vilnius, Lithuania
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-08412 Vilnius, Lithuania
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Wang P, Zhang X, Tao Y, Lv X, Cheng S, Liu C. Improved l-phenylglycine synthesis by introducing an engineered cofactor self-sufficient system. Synth Syst Biotechnol 2022; 7:513-521. [PMID: 35024478 PMCID: PMC8715069 DOI: 10.1016/j.synbio.2021.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/18/2021] [Accepted: 12/16/2021] [Indexed: 11/09/2022] Open
Abstract
l-phenylglycine (L-phg) is a valuable non-proteinogenic amino acid used as a precursor to β-lactam antibiotics, antitumor agent taxol and many other pharmaceuticals. L-phg synthesis through microbial bioconversion allows for high enantioselectivity and sustainable production, which will be of great commercial and environmental value compared with organic synthesis methods. In this work, an L-phg synthesis pathway was built in Escherichia coli resulting in 0.23 mM L-phg production from 10 mM l-phenylalanine. Then, new hydroxymandelate synthases and hydroxymandelate oxidases were applied in the L-phg synthesis leading to a 5-fold increase in L-phg production. To address 2-oxoglutarate, NH4 +, and NADH shortage, a cofactor self-sufficient system was introduced, which converted by-product l-glutamate and NAD+ to these three cofactors simultaneously. In this way, L-phg increased 2.5-fold to 2.82 mM. Additionally, in order to reduce the loss of these three cofactors, a protein scaffold between synthesis pathway and cofactor regeneration modular was built, which further improved the L-phg production to 3.72 mM with a yield of 0.34 g/g L-phe. This work illustrated a strategy applying for whole-cell biocatalyst converting amino acid to its value-added chiral amine in a cofactor self-sufficient manner.
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Affiliation(s)
- Pengchao Wang
- School of Life Science, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
- Key Laboratory for Enzymes and Enzyme-like Material Engineering of Heilongjiang, PR China
| | - Xiwen Zhang
- School of Life Science, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Yucheng Tao
- School of Life Science, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Xubing Lv
- School of Life Science, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Shengjie Cheng
- School of Life Science, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Chengwei Liu
- School of Life Science, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
- Key Laboratory for Enzymes and Enzyme-like Material Engineering of Heilongjiang, PR China
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3
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Ji Z, Tian W, Gao W, Zang R, Wang H, Yang G. Cancer-Associated Fibroblast-Derived Interleukin-8 Promotes Ovarian Cancer Cell Stemness and Malignancy Through the Notch3-Mediated Signaling. Front Cell Dev Biol 2021; 9:684505. [PMID: 34277625 PMCID: PMC8280773 DOI: 10.3389/fcell.2021.684505] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/01/2021] [Indexed: 12/12/2022] Open
Abstract
As a significant component in ovarian cancer microenvironment, cancer-associated fibroblasts (CAFs) contribute to cancer progression through interaction with cancer cells. Recent studies demonstrate that interleukin-8 (IL-8) is overexpressed in multiple cancer types and is essential for tumor development. Nonetheless, the underlying mechanism that the CAF-derived IL-8 promotes ovarian tumorigenesis is unknown. Here, we show that IL-8 secreted from CAFs could activate normal ovarian fibroblasts (NFs) through multiple signaling and that IL-8 stimulated malignant growth of ovarian cancer cells in animals and increased the IC50 of cisplatin (CDDP) in ovarian cancer cells. Further study showed that IL-8 induced cancer cell stemness via the activation of Notch3 and that the high level of IL-8 in ascites was positively correlated with the expression of Notch3 in ovarian cancer tissues. Collectively, IL-8 secreted from CAFs and cancer cells promotes stemness in human ovarian cancer via the activation of the Notch3-mediated signaling, which may provide a novel strategy for ovarian cancer treatment.
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Affiliation(s)
- Zhaodong Ji
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wenjuan Tian
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Gynecological Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Wen Gao
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, China
| | - Rongyu Zang
- Ovarian Cancer Program, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Huaying Wang
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Gynecological Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Gong Yang
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Central Laboratory, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
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Wu D, Ke Y, Xiao R, Liu J, Li Q, Wang Y. Long non-coding RNA GClnc1 knockdown suppresses progression of epithelial ovarian cancer by recruiting FOXC2 to disrupt the NOTCH1/NF-κB/Snail pathway. Exp Cell Res 2020; 399:112422. [PMID: 33338479 DOI: 10.1016/j.yexcr.2020.112422] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Epithelial ovarian cancer (EOC) is a highly fatal gynecological cancer. A long noncoding RNA (lncRNA) gastric cancer-associated lncRNA1 (GClnc1) has been revealed to play critical roles in metastasis. Therefore, the present study aims to explore the correlation between GClnc1 and the metastasis and progression of EOC. METHODS First, 57 paired EOC and paracancerous tissues were collected to detect GClnc1 expression by RT-qPCR. Subsequently, OVC1 and SKOV3 cells with GClnc1 silencing/overexpression were developed to detect changes in cell activity, apoptosis, migration and invasion abilities. Then, the subcellular localization of GClnc1 was detected by nuclear/cytoplasmic fractionation, ISH and FISH assays. The binding relationships between GClnc1 and forkhead box protein C2 (FOXC2), and between FOXC2 and NOTCH1 were predicted and verified. RESULTS GClnc1 was significantly overexpressed in EOC tissues, and knockdown of GClnc1 inhibited cell viability and promoted apoptosis. Moreover, GClnc1 in the nucleus bound to the transcription factor FOXC2, thereby activating the transcription of NOTCH1. NOTCH1 overexpression enhanced the proliferation and epithelial-mesenchymal transition of SKOV3 and OVC1 cells. Moreover, NOTCH1 activated the NF-κB/Snail signaling. Finally, in vivo experiments demonstrated that GClnc1 knockdown suppressed the growth and metastasis of SKOV3 and OVC1 cells in vivo. CONCLUSIONS GClnc1 promoted NOTCH1 transcription by recruiting FOXC2, thereby activating the NF-κB/Snail signaling and promoting EOC cell growth and metastasis.
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Affiliation(s)
- Dandan Wu
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Yumin Ke
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Rongrong Xiao
- Department of Obstetrics and Gynecology, Quanzhou Strait Hospital, Quanzhou, Fujian, 362018, PR China
| | - Jia Liu
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Qingli Li
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Yiwen Wang
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China.
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López-Nieva P, González-Sánchez L, Cobos-Fernández MÁ, Córdoba R, Santos J, Fernández-Piqueras J. More Insights on the Use of γ-Secretase Inhibitors in Cancer Treatment. Oncologist 2020; 26:e298-e305. [PMID: 33191568 PMCID: PMC7873333 DOI: 10.1002/onco.13595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 10/12/2020] [Indexed: 01/16/2023] Open
Abstract
The NOTCH1 gene encodes a transmembrane receptor protein with activating mutations observed in many T‐cell acute lymphoblastic leukemias (T‐ALLs) and lymphomas, as well as in other tumor types, which has led to interest in inhibiting NOTCH1 signaling as a therapeutic target in cancer. Several classes of Notch inhibitors have been developed, including monoclonal antibodies against NOTCH receptors or ligands, decoys, blocking peptides, and γ‐secretase inhibitors (GSIs). GSIs block a critical proteolytic step in NOTCH activation and are the most widely studied. Current treatments with GSIs have not successfully passed clinical trials because of side effects that limit the maximum tolerable dose. Multiple γ‐secretase–cleavage substrates may be involved in carcinogenesis, indicating that there may be other targets for GSIs. Resistance mechanisms may include PTEN inactivation, mutations involving FBXW7, or constitutive MYC expression conferring independence from NOTCH1 inactivation. Recent studies have suggested that selective targeting γ‐secretase may offer an improved efficacy and toxicity profile over the effects caused by broad‐spectrum GSIs. Understanding the mechanism of GSI‐induced cell death and the ability to accurately identify patients based on the activity of the pathway will improve the response to GSI and support further investigation of such compounds for the rational design of anti‐NOTCH1 therapies for the treatment of T‐ALL. Implications for Practice γ‐secretase has been proposed as a therapeutic target in numerous human conditions, including cancer. A better understanding of the structure and function of the γ‐secretase inhibitor (GSI) would help to develop safe and effective γ‐secretase–based therapies. The ability to accurately identify patients based on the activity of the pathway could improve the response to GSI therapy for the treatment of cancer. Toward these ends, this study focused on γ‐secretase inhibitors as a potential therapeutic target for the design of anti‐NOTCH1 therapies for the treatment of T‐cell acute lymphoblastic leukemias and lymphomas. Understanding the mechanism of γ‐secretase inhibitor (GSI)–induced cell death and the ability to accurately identify patients based on the activity of the pathway could improve the response to GSI therapy for the treatment of cancer. This article focuses on γ‐secretase inhibitors as a potential therapeutic target to treat T‐cell acute lymphoblastic leukemias and lymphomas.
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Affiliation(s)
- Pilar López-Nieva
- Centro de Biología Molecular Severo Ochoa (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid (CSIC-UAM), Madrid, Spain.,IIS Fundación Jiménez Díaz, Madrid, Spain.,Consorcio de Investigación Biomédica de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Laura González-Sánchez
- Centro de Biología Molecular Severo Ochoa (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid (CSIC-UAM), Madrid, Spain.,IIS Fundación Jiménez Díaz, Madrid, Spain.,Consorcio de Investigación Biomédica de Enfermedades Raras (CIBERER), Madrid, Spain
| | - María Ángeles Cobos-Fernández
- Centro de Biología Molecular Severo Ochoa (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid (CSIC-UAM), Madrid, Spain.,IIS Fundación Jiménez Díaz, Madrid, Spain
| | | | - Javier Santos
- Centro de Biología Molecular Severo Ochoa (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid (CSIC-UAM), Madrid, Spain.,IIS Fundación Jiménez Díaz, Madrid, Spain.,Consorcio de Investigación Biomédica de Enfermedades Raras (CIBERER), Madrid, Spain
| | - José Fernández-Piqueras
- Centro de Biología Molecular Severo Ochoa (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid (CSIC-UAM), Madrid, Spain.,IIS Fundación Jiménez Díaz, Madrid, Spain.,Consorcio de Investigación Biomédica de Enfermedades Raras (CIBERER), Madrid, Spain
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Mori M, Mori T, Yamamoto A, Takagi S, Ueda M. Proliferation of poorly differentiated endometrial cancer cells through autocrine activation of FGF receptor and HES1 expression. Hum Cell 2019; 32:367-378. [PMID: 30963412 DOI: 10.1007/s13577-019-00249-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 03/15/2019] [Indexed: 12/12/2022]
Abstract
Patients with poorly differentiated endometrial cancer show poor prognosis, and effective molecular target-based therapies are needed. Endometrial cancer cells proliferate depending on the activation of HES1 (hairy and enhancer of split-1), which is induced by several pathways, such as the Notch and fibroblast growth factor receptor (FGFR) signaling pathways. In addition, aberrant, ligand-free activation of the FGFR signaling pathway resulting from mutations in FGFR2 was also reported in endometrial cancer. However, a clinical trial showed that there was no difference in the effectiveness of FGFR inhibitors between patients with and without the FGFR2 mutation, suggesting a presence of another signaling pathway for the FGFR activation. Here, we investigated the signaling pathway regulating the expression of HES1 and proliferation of poorly and well-differentiated endometrial cancer cell lines Ishikawa and HEC-50B, respectively. Whereas Ishikawa cells proliferated and expressed HES1 in a Notch signaling-dependent manner, Notch signaling was not involved in HES1 and proliferation of HEC-50B cells. The FGFR inhibitor, NVP-BGJ398, decreased HES1 expression and proliferation of HEC-50B cells; however, HEC50B cells had no mutations in the FGFR2 gene. Instead, HEC-50B cells highly expressed ligands for FGFR2, suggesting that FGFR2 is activated by an autocrine manner, not by ligand-free activation. This autocrine pathway activated Akt downstream of FGFR for cell proliferation. Our findings suggest the usefulness of HES1 as a marker for the proliferation signaling and that FGFR inhibitor may be effective for poorly differentiated endometrial cancers that harbor wild-type FGFR.
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Affiliation(s)
- Michihiro Mori
- Department of Medical Life Science, College of Life Science, Kurashiki University of Science and the Arts, 2640 Nishinoura Tsurajima-cho Kurashiki-shi, Okayama, 712-8505, Japan. .,Kake Institute of Cytopathology, Okayama, Japan.
| | - Toshinori Mori
- Department of Clinical Laboratory, Mihara Medical Associations Hospital, Hiroshima, Japan.,Department of Chemical Technology, Graduate School of Science and Industrial Technology, Kurashiki University of Science and the Arts, Okayama, Japan
| | - Aina Yamamoto
- Department of Chemical Technology, Graduate School of Science and Industrial Technology, Kurashiki University of Science and the Arts, Okayama, Japan
| | - Shoji Takagi
- Department of Medical Life Science, College of Life Science, Kurashiki University of Science and the Arts, 2640 Nishinoura Tsurajima-cho Kurashiki-shi, Okayama, 712-8505, Japan.,Kake Institute of Cytopathology, Okayama, Japan
| | - Masatsugu Ueda
- Faculty of Health Sciences, Kio University, Nara, Japan.,Graduate School of Health Sciences, Kio University, Nara, Japan
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Guo Z, Lou Y, Kong M, Luo Q, Liu Z, Wu J. A Systematic Review of Phytochemistry, Pharmacology and Pharmacokinetics on Astragali Radix: Implications for Astragali Radix as a Personalized Medicine. Int J Mol Sci 2019; 20:E1463. [PMID: 30909474 PMCID: PMC6470777 DOI: 10.3390/ijms20061463] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 03/20/2019] [Indexed: 12/17/2022] Open
Abstract
Astragali radix (AR) is one of the most widely used traditional Chinese herbal medicines. Modern pharmacological studies and clinical practices indicate that AR possesses various biological functions, including potent immunomodulation, antioxidant, anti-inflammation and antitumor activities. To date, more than 200 chemical constituents have been isolated and identified from AR. Among them, isoflavonoids, saponins and polysaccharides are the three main types of beneficial compounds responsible for its pharmacological activities and therapeutic efficacy. After ingestion of AR, the metabolism and biotransformation of the bioactive compounds were extensive in vivo. The isoflavonoids and saponins and their metabolites are the major type of constituents absorbed in plasma. The bioavailability barrier (BB), which is mainly composed of efflux transporters and conjugating enzymes, is expected to have a significant impact on the bioavailability of AR. This review summarizes studies on the phytochemistry, pharmacology and pharmacokinetics on AR. Additionally, the use of AR as a personalized medicine based on the BB is also discussed, which may provide beneficial information to achieve a better and more accurate therapeutic response of AR in clinical practice.
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Affiliation(s)
- Zhenzhen Guo
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
| | - Yanmei Lou
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
| | - Muyan Kong
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
| | - Qing Luo
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
| | - Zhongqiu Liu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR) 999078, China.
| | - Jinjun Wu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
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8
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Chen Z, Kapus A, Khatri I, Kos O, Zhu F, Gorczynski RM. Cell membrane-bound CD200 signals both via an extracellular domain and following nuclear translocation of a cytoplasmic fragment. Leuk Res 2018; 69:72-80. [DOI: 10.1016/j.leukres.2018.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/02/2018] [Accepted: 04/06/2018] [Indexed: 12/16/2022]
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Brown DM, Lee HC, Liu S, Quick CM, Fernandes LM, Simmen FA, Tsai SJ, Simmen RCM. Notch-1 Signaling Activation and Progesterone Receptor Expression in Ectopic Lesions of Women With Endometriosis. J Endocr Soc 2018; 2:765-778. [PMID: 30151432 PMCID: PMC6106104 DOI: 10.1210/js.2018-00007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 05/22/2018] [Indexed: 12/22/2022] Open
Abstract
Context Progesterone (P) resistance is a hallmark of endometriosis, but the underlying mechanism(s) for loss of P sensitivity leading to lesion establishment remains poorly understood. Objective To evaluate the association between Notch-1 signaling activation and P resistance in the progression of endometriosis. Design Case control study; archived formalin-fixed, paraffin-embedded tissues. Setting University hospitals (United States, Taiwan). Patients Women with endometriosis; human endometrial stromal cell line (HESC). Intervention Eutopic endometria (EU) and ectopic lesions (ECs) were collected from surgically diagnosed patients. Archived tissue sections of EU and ECs were identified. HESCs were treated with N-[N-(3,5-difluorophenacetyl)-l-alanyl]-S-phenylglycine t-butyl ester (DAPT) and valproic acid (VPA) to, respectively, suppress and induce Notch-1 activation. Outcome Measures Tissues were analyzed for Notch Intra-Cellular Domain 1 (NICD1) and progesterone receptor (PGR) protein expression by immunohistochemistry and for transcript levels of NICD1 target genes HES1, PGR, and PGR-B by quantitative reverse transcription polymerase chain reaction. DAPT- or VPA-treated HESCs with and without P cotreatment were evaluated for cell numbers and for PGR, HES1, and PGR target gene DKK1 transcript levels. Results Nuclear-localized stromal NICD1 protein levels were inversely associated with those of total PGR in EU and ECs. Stromal ECs displayed higher HES1 and lower total PGR and PGR-B transcript levels than EU. In HESCs, DAPT reduction of NICD1 decreased cell numbers and increased PGR transcript and nuclear PGR protein levels and, with P cotreatment, maintained P sensitivity. Conversely, VPA induction of NICD1 decreased PGR transcript levels and, with P cotreatment, abrogated P-induced DKK1 and maintained HES1 transcript levels. Conclusions Aberrant Notch-1 activation is associated with decreased PGR that contributes to P resistance in endometriosis.
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Affiliation(s)
- Dustin M Brown
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Hsiu-Chi Lee
- Department of Physiology, National Cheng Kung University, Tainan, Taiwan
| | - Shi Liu
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Charles M Quick
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Lorenzo M Fernandes
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Frank A Simmen
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Shaw-Jenq Tsai
- Department of Physiology, National Cheng Kung University, Tainan, Taiwan
| | - Rosalia C M Simmen
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
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10
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Skarmoutsou E, Bevelacqua V, D' Amico F, Russo A, Spandidos DA, Scalisi A, Malaponte G, Guarneri C. FOXP3 expression is modulated by TGF‑β1/NOTCH1 pathway in human melanoma. Int J Mol Med 2018; 42:392-404. [PMID: 29620159 PMCID: PMC5979787 DOI: 10.3892/ijmm.2018.3618] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/04/2018] [Indexed: 12/18/2022] Open
Abstract
Forkhead box protein 3 (FOXP3) transcription factor is expressed by immune cells and several human cancers and is associated with tumor aggressiveness and unfavorable clinical outcomes. NOTCH and transforming growth factor-β (TGF-β) protumorigenic effects are mediated by FOXP3 expression in several cancer models; however, their interaction and role in melanoma is unknown. We investigated TGF-β-induced FOXP3 gene expression during NOTCH1 signaling inactivation. Primary (WM35) and metastatic melanoma (A375 and A2058) cell lines and normal melanocytes (NHEM) were used. FOXP3 subcellular distribution was evaluated by immuno cytochemical analysis. Gene expression levels were assessed by reverse transcription-quantitative polymerase chain reaction. Protein levels were assessed by western blot analysis. The γ-secretase inhibitor (GSI) was used for NOTCH1 inhibition and recombinant human (rh)TGF-β was used for melanoma cell stimulation. Cell proliferation and viability were respectively assessed by MTT and Trypan blue dye assays. FOXP3 mRNA and protein levels were progressively higher in WM35, A375 and A2058 cell lines compared to NHEM and their levels were further increased after stimulation with rh-TGF-β. TGF-β-mediated FOXP3 expression was mediated by NOTCH1 signaling. Inhibition of NOTCH1 with concomitant rh-TGF-β stimulation determined the reduction in gene expression and protein level of FOXP3. Finally, melanoma cell line proliferation and viability were reduced by NOTCH1 inhibition. The results show that nn increase in FOXP3 expression in metastatic melanoma cell lines is a potential marker of tumor aggressiveness and metastasis. NOTCH1 is a central mediator of TGF-β-mediated FOXP3 expression and NOTCH1 inhibition produces a significant reduction of melanoma cell proliferation and viability.
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Affiliation(s)
- Eva Skarmoutsou
- Department of Biomedical and Biotechnological Science, University of Catania, 95124 Catania, Italy
| | - Valentina Bevelacqua
- Department of Biomedical and Biotechnological Science, University of Catania, 95124 Catania, Italy
| | - Fabio D' Amico
- Department of Biomedical and Biotechnological Science, University of Catania, 95124 Catania, Italy
| | - Angela Russo
- Department of Biomedical and Biotechnological Science, University of Catania, 95124 Catania, Italy
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Aurora Scalisi
- Unit of Oncologic Diseases, ASP‑Catania, 95100 Catania, Italy
| | - Grazia Malaponte
- Research Unit of the Catania Section of the Italian League Against Cancer, 95122 Catania, Italy
| | - Claudio Guarneri
- Department of Clinical and Experimental Medicine, Section of Dermatology, University of Messina, 98122 Messina, Italy
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11
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Prognostic roles of Notch receptor mRNA expression in human ovarian cancer. Oncotarget 2018; 8:32731-32740. [PMID: 28415574 PMCID: PMC5464823 DOI: 10.18632/oncotarget.16387] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 03/09/2017] [Indexed: 12/30/2022] Open
Abstract
Aberrant activation of Notch signaling pathway has been correlated with high grade ovarian carcinoma and carcinogenesis. However, the predictive and prognostic values of Notch signaling pathway in ovarian cancer patients remains unclear. We utilize “The Kaplan-Meier plotter” (KM plotter) background database to access the prognostic values including overall survival (OS), progression-free survival (PFS), as well as post-progression survival (PPS) of four Notch receptor mRNA expression in ovarian cancer patients. Notch1 mRNA high expression was not correlated with OS, PFS and PPS for all ovarian cancer patients, but significantly correlated with poor PFS in TP53 wild type and favorite PFS in TP53 mutation type ovarian cancer patients. Notch2 mRNA high expression was significantly correlated with poor PFS for all ovarian cancer patients, especially in grade II patients. Notch3 mRNA high expression was significantly correlated with favorite PFS for all ovarian cancer patients. Notch4 mRNA high expression was significantly correlated with favorite OS, but not PFS and PPS for all ovarian cancer patients. The results strongly support that there are distinct prognostic values of four Notch receptor mRNA expression in ovarian cancer patients.
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12
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Xu L, Gu L, Tao X, Xu Y, Qi Y, Yin L, Han X, Peng J. Effect of dioscin on promoting liver regeneration via activating Notch1/Jagged1 signal pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 38:107-117. [PMID: 29425642 DOI: 10.1016/j.phymed.2017.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 10/20/2017] [Accepted: 11/12/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND Development of novel candidates to promote liver regeneration is critical important after partial hepatectomy (PH). Dioscin, a natural product, shows potent effect on liver protection in our previous works. PURPOSE This work aimed to investigate the effect and underlying mechanisms of dioscin on liver regeneration. METHODS The promoting proliferation effects of dioscin on mouse hepatocytem AML12 cells, rat primary hepatocytes, rats and mice after 70% PH were evaluated. RESULTS Dioscin significantly promoted proliferation of rat primary hepatocytes and AML12 cells through MTT, BrdU and PCNA staining assays. Meanwhile, dioscin rapidly recovered the liver to body weight ratios, declined ALT and AST levels, and relieved hepatocytes necrosis compared with 70% PH operation groups in rats and mice. Mechanistic test showed that dioscin significantly increased Notch1 and Jagged1 levels, and accelerated γ-secretase activity by up-regulating PS1 expression, leading to nuclear translocation of Notch1 intracellular domain (NICD1). Subsequently, the significant activation of Notch-dependent target genes (Hey1, Hes1, EGFR, VEGF), and cell-cycle regulatory proteins (CyclinD1, CyclinE1, CDK4 and CDK2) were all recognized. In addition, these results were further confirmed by Notch1 siRNA silencing and inhibition of γ-secretase by DAPT (a well-characterized γ-secretase inhibitor) in vitro. CONCLUSIONS Dioscin, as a novel efficient γ-secretase activator, NICD1 nucleus translocation promoter and cell cycle regulator, markedly activated Notch1/Jagged1 pathway to promote hepato-proliferation. Our findings provide novel insights into dioscin as a natural product with facilitating liver regeneration after PH.
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Affiliation(s)
- Lina Xu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Lina Gu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Xufeng Tao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Youwei Xu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Yan Qi
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Lianhong Yin
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Xu Han
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China.
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13
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Hasegawa-Minato J, Toyoshima M, Ishibashi M, Zhang X, Shigeta S, Grandori C, Kitatani K, Yaegashi N. Novel cooperative pathway of c-Myc and Furin, a pro-protein convertase, in cell proliferation as a therapeutic target in ovarian cancers. Oncotarget 2017; 9:3483-3496. [PMID: 29423060 PMCID: PMC5790477 DOI: 10.18632/oncotarget.23322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 11/16/2017] [Indexed: 01/16/2023] Open
Abstract
c-Myc is a master regulator of various oncogenic functions in many types of human cancers. However, direct c-Myc-targeted therapy has not been successful in the clinic. Here, we explored a novel therapeutic target, which shows synthetic lethality in c-Myc-driven ovarian cancers, and examined the molecular mechanism of the synthetic lethal interaction. By high throughput siRNA screening with a library of 6,550 genes, Furin, a pro-protein convertase, was identified as the top hit gene. Furin inhibition by siRNA or a Furin inhibitor significantly suppressed cell proliferation in high c-Myc-expressing ovarian cancer cells compared with low c-Myc-expressing cells. Conversely, Furin overexpression in the presence of high c-Myc significantly promoted cell proliferation compared with only c-Myc or Furin overexpression. Notch1, one of the Furin substrates, was upregulated by c-Myc, and Notch1 cleaved by Furin increased cell proliferation of high c-Myc-expressing ovarian cancer cells. Notch1 was involved in the cooperative pathway of c-Myc and Furin in cell proliferation. In clinical ovarian cancer specimens, co-expression of c-Myc and Furin correlated with poor survival. In conclusion, we found that c-Myc cooperates with Furin to promote cell proliferation. Furin may be a promising therapeutic target in c-Myc-driven ovarian cancer.
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Affiliation(s)
- Junko Hasegawa-Minato
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masafumi Toyoshima
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masumi Ishibashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Xuewei Zhang
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shogo Shigeta
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Carla Grandori
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,SEngine Precision Medicine, Seattle, WA, USA
| | - Kazuyuki Kitatani
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Tohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan
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14
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Gazave E, Lemaître QIB, Balavoine G. The Notch pathway in the annelid Platynereis: insights into chaetogenesis and neurogenesis processes. Open Biol 2017; 7:rsob.160242. [PMID: 28148821 PMCID: PMC5356439 DOI: 10.1098/rsob.160242] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 01/03/2017] [Indexed: 01/13/2023] Open
Abstract
Notch is a key signalling pathway playing multiple and varied functions during development. Notch regulates the selection of cells with a neurogenic fate and maintains a pool of yet uncommitted precursors through lateral inhibition, both in insects and in vertebrates. Here, we explore the functions of Notch in the annelid Platynereis dumerilii (Lophotrochozoa). Conserved components of the pathway are identified and a scenario for their evolution in metazoans is proposed. Unexpectedly, neither Notch nor its ligands are expressed in the neurogenic epithelia of the larva at the time when massive neurogenesis begins. Using chemical inhibitors and neural markers, we demonstrate that Notch plays no major role in the general neurogenesis of larvae. Instead, we find Notch components expressed in nascent chaetal sacs, the organs that produce the annelid bristles. Impairing Notch signalling induces defects in chaetal sac formation, abnormalities in chaetae producing cells and a change of identity of chaeta growth accessory cells. This is the first bilaterian species in which the early neurogenesis processes appear to occur without a major involvement of the Notch pathway. Instead, Notch is co-opted to pattern annelid-specific organs, likely through a lateral inhibition process. These features reinforce the view that Notch signalling has been recruited multiple times in evolution due to its remarkable ‘toolkit’ nature.
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Affiliation(s)
- Eve Gazave
- Institut Jacques Monod, CNRS, UMR 7592, Univ Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
| | - Quentin I B Lemaître
- Institut Jacques Monod, CNRS, UMR 7592, Univ Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
| | - Guillaume Balavoine
- Institut Jacques Monod, CNRS, UMR 7592, Univ Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
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15
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Zou B, Wang H, Liu Y, Qi P, Lei T, Sun M, Wang Y. Mangiferin induces apoptosis in human ovarian adenocarcinoma OVCAR3 cells via the regulation of Notch3. Oncol Rep 2017; 38:1431-1441. [PMID: 28714011 PMCID: PMC5549032 DOI: 10.3892/or.2017.5814] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/19/2017] [Indexed: 01/01/2023] Open
Abstract
Ovarian cancer is the most lethal gynecological malignancy in the world. Our previous studies showed that mangiferin, purified from plant source, possessed anti-neoplasm effect on human lung adenocarcinoma A549 cells. This study aimed to determine the apoptosis-inducing effect of mangiferin on human ovarian carcinoma OVCAR3 cells. By in vitro studies, we found mangiferin significantly inhibited viability of OVCAR3 cells, and remarkably increased the sensitivity of OVCAR3 cells to cisplatin. In addition, the activation of caspase-dependent apoptosis was observed in mangiferin treated ovarian cancer cells. Importantly, we observed an obviously downregulated Notch expression after mangiferin treatment, indicating the crucial role of Notch in mangiferin mediated apoptosis. In contrast, overexpression of Notch3 abrogated the apoptosis-inducing efficacy of mangiferin, further demonstrating that mangiferin induced apoptosis via Notch pathway. Furthermore, OVCAR3 cell xenograft models revealed that mangiferin treatment inhibited tumor growth and expanded survival of tumor xenograft mice. Based on these results, we concluded that mangiferin could significantly inhibit the proliferation and induce apoptosis in OVCAR3 cells. Our study also suggested the anti-neoplasm effect of mangiferin might be via the regulation of Notch3. Taken together, by targeting cell apoptosis pathways and enhancing the response to cisplatin treatment, mangiferin may represent a potential new drug for the treatment of human ovarian cancer.
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Affiliation(s)
- Bingyu Zou
- Department of Gynecology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Hailian Wang
- Institute of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yilong Liu
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Ping Qi
- Department of Pediatrics, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Tiantian Lei
- Department of Pharmacy, Medical School of University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Minghan Sun
- Department of Gynecology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yi Wang
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
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16
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NOR1 promotes hepatocellular carcinoma cell proliferation and migration through modulating the Notch signaling pathway. Exp Cell Res 2017; 352:375-381. [DOI: 10.1016/j.yexcr.2017.02.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/16/2017] [Accepted: 02/19/2017] [Indexed: 12/19/2022]
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17
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Zhao YC, Zhang L, Feng SS, Hong L, Zheng HL, Chen LL, Zheng XL, Ye YQ, Zhao MD, Wang WX, Zheng CH. Efficient delivery of Notch1 siRNA to SKOV3 cells by cationic cholesterol derivative-based liposome. Int J Nanomedicine 2016; 11:5485-5496. [PMID: 27799771 PMCID: PMC5077131 DOI: 10.2147/ijn.s115367] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A novel cationic cholesterol derivative-based small interfering RNA (siRNA) interference strategy was suggested to inhibit Notch1 activation in SKOV3 cells for the gene therapy of ovarian cancer. The cationic cholesterol derivative, N-(cholesterylhemisuccinoyl-amino-3-propyl)-N, N-dimethylamine (DMAPA-chems) liposome, was incubated with siRNA at different nitrogen-to-phosphate ratios to form stabilized, near-spherical siRNA/DMAPA-chems nanoparticles with sizes of 100–200 nm and zeta potentials of 40–50 mV. The siRNA/DMAPA-chems nanoparticles protected siRNA from nuclease degradation in 25% fetal bovine serum. The nanoparticles exhibited high cell uptake and Notch1 gene knockdown efficiency in SKOV3 cells at an nitrogen-to-phosphate ratio of 100 and an siRNA concentration of 50 nM. They also inhibited the growth and promoted the apoptosis of SKOV3 cells. These results may provide the potential for using cationic cholesterol derivatives as efficient nonviral siRNA carriers for the suppression of Notch1 activation in ovarian cancer cells.
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Affiliation(s)
| | - Li Zhang
- Pharmacy Department, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Shi-Sen Feng
- Department of Pharmaceutic Preparation, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou
| | - Lu Hong
- Department of Pharmaceutic Preparation, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou
| | - Hai-Li Zheng
- Department of Pharmaceutic Preparation, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou
| | - Li-Li Chen
- Department of Gynecologic Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | | | | | | | - Wen-Xi Wang
- Department of Pharmaceutic Preparation, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou
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18
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An TH, He QW, Xia YP, Chen SC, Baral S, Mao L, Jin HJ, Li YN, Wang MD, Chen JG, Zhu LQ, Hu B. MiR-181b Antagonizes Atherosclerotic Plaque Vulnerability Through Modulating Macrophage Polarization by Directly Targeting Notch1. Mol Neurobiol 2016; 54:6329-6341. [PMID: 27722924 DOI: 10.1007/s12035-016-0163-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 09/27/2016] [Indexed: 12/20/2022]
Abstract
Atherosclerotic plaque vulnerability is the major cause for acute stroke and could be regulated by macrophage polarization. MicroRNA-181b (miR-181b) was involved in macrophage differential. Here, we explore whether miR-181b could regulate atherosclerotic plaque vulnerability by modulating macrophage polarization and the underline mechanisms. In acute stroke patients with atherosclerotic plaque, we found that the serum level of miR-181b was decreased. Eight-week apolipoprotein E knockout (ApoE-/-) mice were randomly divided into three groups (N = 10): mice fed with normal saline (Ctrl), mice fed with high-fat diet, and tail vein injection with miRNA agomir negative control (AG-NC)/miR-181b agomir (181b-AG, a synthetic miR-181b agonist). We found that the serum level of miR-181b in AG-NC group was lower than that in Ctrl group. Moreover, 181b-AG could upregulate miR-181b expression, reduce artery burden and attenuate atherosclerotic plaque vulnerability by modulating macrophage polarization. In RAW264.7 cells treated with oxidized low-density lipoprotein (ox-LDL), we found miR-181b could reverse the function of ox-LDL on M1/M2 markers at both mRNA and protein levels. Furthermore, by employing luciferase reporter assay, we found that Notch1 was a direct target of miR-181b and could be regulated by miR-181b in vivo and in vitro. Finally, inhibition of Notch1 could abolish the function of downregulating miR-181b on increasing M2 phenotype macrophages. Our study demonstrates that administration of miR-181b could reduce atherosclerotic plaque vulnerability partially through modulating macrophage phenotype by directly targeting Notch1.
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Affiliation(s)
- Tian-Hui An
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Quan-Wei He
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuan-Peng Xia
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Sheng-Cai Chen
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Suraj Baral
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ling Mao
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hui-Juan Jin
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ya-Nan Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Meng-Die Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jian-Guo Chen
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Ling-Qiang Zhu
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China. .,Department of Pathophysiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Bo Hu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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19
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Zhou J, Jain S, Azad AK, Xu X, Yu HC, Xu Z, Godbout R, Fu Y. Notch and TGFβ form a positive regulatory loop and regulate EMT in epithelial ovarian cancer cells. Cell Signal 2016; 28:838-49. [PMID: 27075926 DOI: 10.1016/j.cellsig.2016.03.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 03/31/2016] [Accepted: 03/31/2016] [Indexed: 02/05/2023]
Abstract
Epithelial-mesenchymal transition (EMT) plays a critical role in the progression of epithelial ovarian cancer (EOC). However, the mechanisms that regulate EMT in EOC are not fully understood. Here, we report that activation of Notch1 induces EMT in EOC cells as evidenced by downregulation of E-cadherin and cytokeratins, upregulation of Slug and Snail, as well as morphological changes. Interestingly, activation of Notch1 increases TGFβ/Smad signaling by upregulating the expression of TGFβ and TGFβ type 1 receptor. Time course experiments demonstrate that inhibition of Notch by DAPT (a γ-secretase inhibitor) decreases TGFβ-induced phosphorylation of receptor Smads at late, but not at early, timepoints. These results suggest that Notch activation plays a role in sustaining TGFβ/Smad signaling in EOC cells. Furthermore, inhibition of Notch by DAPT decreases TGFβ induction of Slug and repression of E-cadherin and knockdown of Notch1 decreases TGFβ-induced repression of E-cadherin, indicating that Notch is required, at least in part, for TGFβ-induced EMT in EOC cells. On the other hand, TGFβ treatment increases the expression of Notch ligand Jagged1 and Notch target gene HES1 in EOC cells. Functionally, the combination of Notch1 activation and TGFβ treatment is more potent in promoting motility and migration of EOC cells than either stimulation alone. Taken together, our results indicate that Notch and TGFβ form a reciprocal positive regulatory loop and cooperatively regulate EMT and promote EOC cell motility and migration.
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Affiliation(s)
- Jiesi Zhou
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; The first affiliated hospital, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Saket Jain
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Abul K Azad
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Xia Xu
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Hai Chuan Yu
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Zhihua Xu
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Roseline Godbout
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - YangXin Fu
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Department of Obstetrics and Gynecology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.
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20
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Huang WH, Liao WR, Sun RX. Astragalus polysaccharide induces the apoptosis of human hepatocellular carcinoma cells by decreasing the expression of Notch1. Int J Mol Med 2016; 38:551-7. [PMID: 27279598 DOI: 10.3892/ijmm.2016.2632] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 04/11/2016] [Indexed: 11/05/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the third most frequent cause of cancer death worldwide. Astragalus polysaccharide (APS), the primary active component extracted from a traditional Chinese medicinal herb Astragalus membranaceus, has been proved to exert a marked inhibitory effect on a number of types of human solid tumors. In the present study, we aimed to examine the effects of APS on the survival of the HCC cell line H22 and to elucidate the underlying regulatory mechanisms responsible for these effects. Our results revealed that the mRNA and protein expression of Notch1 was significantly upregulated in the HCC tissues compared with that in the normal tissues. APS decreased cell viability and induced the apoptosis of HCC cells in a concentration-dependent manner, which were evaluated using a cell counting kit-8 (CCK-8) assay and flow cytometric analysis, respectively. Furthermore, APS regulated the expression of apoptosis-related genes (Bcl-2 and BAX) and proteases (caspase-3 and -8). Mechanically, Notch1 expression was found to be suppressed in HCC cells, and further analysis indicated that Notch1 knockdown by siRNA significantly reduced cell viability, suppressed the metastatic capacity and enhanced the apoptosis of HCC cells. Taken together, these findings suggest that Notch1 may be a potential therapeutic target for the treatment of HCC.
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Affiliation(s)
- Wen-Hai Huang
- Department of General Surgery, Jinshan Hospital Affiliated to Fudan University, Shanghai 201508, P.R. China
| | - Wei-Rong Liao
- Department of General Surgery, Jinshan Hospital Affiliated to Fudan University, Shanghai 201508, P.R. China
| | - Rong-Xun Sun
- Department of General Surgery, Jinshan Hospital Affiliated to Fudan University, Shanghai 201508, P.R. China
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21
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Yang L, Zhang S, George SK, Teng R, You X, Xu M, Liu H, Sun X, Amin HM, Shi W. Targeting Notch1 and proteasome as an effective strategy to suppress T-cell lymphoproliferative neoplasms. Oncotarget 2016; 6:14953-69. [PMID: 25879451 PMCID: PMC4558128 DOI: 10.18632/oncotarget.3621] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 03/14/2015] [Indexed: 12/13/2022] Open
Abstract
The T-cell lymphoproliferative neoplasms (T-LPN) are characterized by a poor clinical outcome. Current therapeutics are mostly non-selective and may induce harmful side effects. It has been reported that NOTCH1 activation mutations frequently associate T-LPN. Because anti-Notch1 based therapies such as γ-secretase inhibitors (GSI) are less efficient and induce considerable side effects, we hypothesized that combining low concentrations of GSI and the proteasome inhibitor bortezomib (BTZ) may provide an effective and tolerable approach to treat T-LPN. Hence, we analyzed the in vitro and in vivo effects of GSI-I and BTZ, alone or in combination, against T-LPN. GSI-I and BTZ synergistically decreased cell viability, proliferation, and colony formation, and induced apoptosis in T-LPN cell lines. Furthermore, combining GSI-I and BTZ decreased the viability of primary T-LPN cells from patients. These effects were accompanied by deregulation of Notch1, AKT, ERK, JNK, p38 MAPK, and NF-κB survival pathways. Moreover, combination treatment inhibited T-LPN tumor growth in nude mice. In all experiments, combining low concentrations of GSI-I and BTZ was superior to using a single agent. Our data support that a synergistic antitumor activity exists between GSI-I and BTZ, and provide a rationale for successful utilization of dual Notch1 and proteasome inhibition to treat T-LPN.
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Affiliation(s)
- Lujun Yang
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China
| | - Shuangfeng Zhang
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China
| | - Suraj Konnath George
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Rong Teng
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China
| | - Xuefen You
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China
| | - Mengqi Xu
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China
| | - Hong Liu
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China
| | - Xiaoping Sun
- Department of Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, Texas, 77030, USA
| | - Hesham M Amin
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, Texas, 77030, USA
| | - Wenyu Shi
- Department of Hematology, Affiliated Hospital of The University of Nantong, Jiangsu 226001, China.,Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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22
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Zhou X, Teng L, Wang M. Distinct prognostic values of four-Notch-receptor mRNA expression in ovarian cancer. Tumour Biol 2015; 37:6979-85. [PMID: 26662955 DOI: 10.1007/s13277-015-4594-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/03/2015] [Indexed: 12/18/2022] Open
Abstract
Notch signaling pathway includes ligands and Notch receptors, which are frequently deregulated in several human malignancies including ovarian cancer. Aberrant activation of Notch signaling has been linked to ovarian carcinogenesis and progression. In the current study, we used the "Kaplan-Meier plotter" (KM plotter) database, in which updated gene expression data and survival information from a total of 1306 ovarian cancer patients were used to access the prognostic value of four Notch receptors in ovarian cancer patients. Hazard ratio (HR), 95 % confidence intervals, and log-rank P were calculated. Notch1 messenger RNA (mRNA) high expression was not found to be correlated to overall survival (OS) for all ovarian cancer, as well as in serous and endometrioid cancer patients followed for 20 years. However, Notch1 mRNA high expression is significantly associated with worsen OS in TP53 wild-type ovarian cancer patients, while it is significantly associated with better OS in TP53 mutation-type ovarian cancer patients. Notch2 mRNA high expression was found to be significantly correlated to worsen OS for all ovarian cancer patients, as well as in grade II ovarian cancer patients. Notch3 mRNA high expression was found to be significantly correlated to better OS for all ovarian cancer patients, but not in serous cancer patients and endometrioid cancer patients. Notch4 mRNA high expression was not found to be significantly correlated to OS for all ovarian cancer patients, serous cancer patients, and endometrioid cancer patients. These results indicate that there are distinct prognostic values of four Notch receptors in ovarian cancer. This information will be useful for better understanding of the heterogeneity and complexity in the molecular biology of ovarian cancer and for developing tools to more accurately predict their prognosis. Based on our results, Notch1 could be a potential drug target of TP53 wild-type ovarian cancer and Notch2 could be a potential drug target of ovarian cancer.
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Affiliation(s)
- Xinling Zhou
- Department of Obstetrics and Gynecology, The Second People's Hospital of Liaocheng Affiliated to Taishan Medical College, No. 306 Jiankang Rd, Linqing, 252601, Shandong Province, People's Republic of China.
| | - Lingling Teng
- Department of Obstetrics and Gynecology, The Second People's Hospital of Liaocheng Affiliated to Taishan Medical College, No. 306 Jiankang Rd, Linqing, 252601, Shandong Province, People's Republic of China
| | - Min Wang
- Department of Pathology, The Second People's Hospital of Liaocheng Affiliated to Taishan Medical College, Linqing, 252601, Shandong Province, People's Republic of China
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Kang H, Jeong JY, Song JY, Kim TH, Kim G, Huh JH, Kwon AY, Jung SG, An HJ. Notch3-specific inhibition using siRNA knockdown or GSI sensitizes paclitaxel-resistant ovarian cancer cells. Mol Carcinog 2015. [PMID: 26207830 DOI: 10.1002/mc.22363] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Notch signaling plays an important role in ovarian cancer chemoresistance, which is responsible for recurrence. Gamma-secretase inhibitor (GSI) is a broad-spectrum Notch inhibitor, but it has serious side effects. The efficacy of Notch3-specific inhibition in paclitaxel-resistant ovarian cancers was assessed in this study, which has not yet been evaluated relative to GSI. To analyze the effect of Notch3-specific inhibition on paclitaxel-resistant ovarian cancers, we compared cell viability, apoptosis, cell migration, angiogenesis, cell cycle, and spheroid formation after treatment with either Notch3 siRNA or GSI in paclitaxel-resistant SKpac cells and parental SKOV3 cells. Expression levels of survival, cell cycle, and apoptosis-related proteins were measured and compared between groups. Notch3 was significantly overexpressed in chemoresistant cancer tissues and cell lines relative to chemosensitive group. In paclitaxel-resistant cancer cells, Notch inhibition significantly reduced viability, migration, and angiogenesis and increased apoptosis, thereby boosting sensitivity to paclitaxel. Spheroid formation was also significantly reduced. Both Notch3 siRNA-treated cells and GSI-treated cells arrested in the G2/M phase of the cell cycle. Proteins of cell survival, cyclin D1 and cyclin D3 were reduced, whereas p21 and p27 were elevated. Both GSI and Notch3 siRNA treatment reduced expression of anti-apoptotic proteins (BCL-W, BCL2, and BCL-XL) and increased expression of pro-apoptotic proteins (Bad, Bak, Bim, Bid, and Bax). These results indicate that Notch3-specific inhibition sensitizes paclitaxel-resistant cancer cells to paclitaxel treatment, with an efficacy comparable to that of GSI. This approach would be likely to avoid the side effects of broad-spectrum GSI treatment. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Haeyoun Kang
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea.,Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Ju-Yeon Jeong
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Ji-Ye Song
- Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Tae Heon Kim
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea.,Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Gwangil Kim
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea.,Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Jin Hyung Huh
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Ah-Young Kwon
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Sang Geun Jung
- Department of Gynecologic Oncology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Hee Jung An
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea.,Institute for Clinical Research, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
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Haragopal H, Yu D, Zeng X, Kim SW, Han IB, Ropper AE, Anderson JE, Teng YD. Stemness enhancement of human neural stem cells following bone marrow MSC coculture. Cell Transplant 2015; 24:645-59. [PMID: 25719952 DOI: 10.3727/096368915x687561] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Rapid loss of stemness capacity in purified prototype neural stem cells (NSCs) remains a serious challenge to basic and clinical studies aiming to repair the central nervous system. Based on the essential role of mesodermal guidance in the process of neurulation, we hypothesized that coculture of human NSCs (hNSCs) with human bone marrow-derived mesenchymal stromal stem cells (hMSCs) could enhance the stemness of hNSCs through Notch-1 signaling. We have now tested the hypothesis by assessing behaviors of hNSCs and hMSCs under systematically designed coculture conditions relative to monocultures, with or without Notch-1 manipulation in vitro. Our data demonstrate that expression levels of Notch-1 and Hes-1 as determined by immunocytochemistry are significantly higher in hNSCs cocultured with hMSCs than those of controls. Furthermore, coculturing significantly increases immunoreactivity of CD15, a neural stemness marker, but decreases CD24, a marker of neural/neuronal commitment in hNSCs. The effect is independent from the physical status of cell growth since coculture and notch signaling actually promotes hNSC adhesion. Importantly, coculture with hMSCs markedly augments hNSC proliferation rate (e.g., higher yield in G2/M phase subpopulation in a notch-dependent manner detected by flow cytometry) without diminishing their lineage differentiation capabilities. The results suggest that coculture of hNSCs with hMSCs enhances stemness biology of hNSCs partially via activation of Notch-1 signal transduction. Our finding sheds new light on mesoderm-ectoderm cell fate determination via contact-based hMSC-hNSC interactions and provides mechanistic leads for devising effective regimens to sustain and augment stemness of in vitro established hNSC and hMSC lines for basic science, translational and clinical applications.
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Affiliation(s)
- Hariprakash Haragopal
- Department of Neurosurgery, Harvard Medical School and the Brigham and Women's Hospital, Boston, MA, USA
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Yan B, Liu L, Zhao Y, Xiu LJ, Sun DZ, Liu X, Lu Y, Shi J, Zhang YC, Li YJ, Wang XW, Zhou YQ, Feng SH, Lv C, Wei PK, Qin ZF. Xiaotan Sanjie decoction attenuates tumor angiogenesis by manipulating Notch-1-regulated proliferation of gastric cancer stem-like cells. World J Gastroenterol 2014; 20:13105-13118. [PMID: 25278704 PMCID: PMC4177489 DOI: 10.3748/wjg.v20.i36.13105] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/10/2014] [Accepted: 05/19/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the underlying mechanisms of action and influence of Xiaotan Sanjie (XTSJ) decoction on gastric cancer stem-like cells (GCSCs).
METHODS: The gastric cancer cell line MKN-45 line was selected and sorted by FACS using the cancer stem cell marker CD44; the stemness of these cells was checked in our previous study. In an in vitro study, the expression of Notch-1, Hes1, Vascular endothelial growth factor (VEGF), and Ki-67 in both CD44-positive gastric cancer stem-like cells (GCSCs) and CD44-negative cells was measured by Western blot. The effect of XTSJ serum on cell viability and on the above markers was measured by MTT assay and Western blot, respectively. In an in vivo study, the ability to induce angiogenesis and maintenance of GCSCs in CD44-positive-MKN-45- and CD44-negative-engrafted mice were detected by immunohistochemical staining using markers for CD34 and CD44, respectively. The role of XTSJ decoction in regulating the expression of Notch-1, Hes1, VEGF and Ki-67 was measured by Western blot and real-time polymerase chain reaction.
RESULTS: CD44+ GCSCs showed more cell proliferation and VEGF secretion than CD44-negative cells in vitro, which were accompanied by the high expression of Notch-1 and Hes1 and positively associated with tumor growth (GCSCs vs CD44-negative cells, 2.72 ± 0.25 vs 1.46 ± 0.16, P < 0.05) and microvessel density (MVD) (GCSCs vs CD44-negative cells, 8.15 ± 0.42 vs 3.83 ± 0.49, P < 0.001) in vivo. XTSJ decoction inhibited the viability of both cell types in a dose-dependent manner in vitro. Specifically, a significant difference in the medium- (82.87% ± 6.53%) and high-dose XTSJ groups (77.43% ± 7.34%) was detected at 24 h in the CD44+ GCSCs group compared with the saline group (95.42% ± 5.76%) and the low-dose XTSJ group (90.74% ± 6.57%) (P < 0.05). However, the efficacy of XTSJ decoction was reduced in the CD44- groups; significant differences were only detected in the high-dose XTSJ group at 48 h (78.57% ± 6.94%) and 72 h (72.12% ± 7.68%) when compared with the other CD44- groups (P < 0.05). Notably, these differences were highly consistent with the Notch-1, Hes1, VEGF and Ki-67 expression in these cells. Similarly, in vivo, XTSJ decoction inhibited tumor growth in a dose-dependent manner. A significant difference was observed in the medium- (1.76 ± 0.15) and high-dose XTSJ (1.33 ± 0.081) groups compared with the GCSCs control group (2.72 ± 0.25) and the low-dose XTSJ group (2.51 ± 0.25) (P < 0.05). We also detected a remarkable decrease of MVD in the medium- (7.10 ± 0.60) and high-dose XTSJ (5.99 ± 0.47) groups compared with the GCSC control group (8.15 ± 0.42) and the low-dose XTSJ group (8.14 ± 0.46) (P < 0.05). Additionally, CD44 expression was decreased in these groups [medium- (4.43 ± 0.45) and high-dose XTSJ groups (3.56 ± 0.31) vs the GCSC control (5.96 ± 0.46) and low dose XTSJ groups (5.91 ± 0.38)] (P < 0.05). The significant differences in Notch-1, Hes1, VEGF and Ki-67 expression highly mirrored the results of XTSJ decoction in inhibiting tumor growth, MVD and CD44 expression.
CONCLUSION: Notch-1 may play an important role in regulating the proliferation of GCSCs; XTSJ decoction could attenuate tumor angiogenesis, at least partially, by inhibiting Notch-1.
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MESH Headings
- Angiogenesis Inhibitors/pharmacology
- Animals
- Antineoplastic Agents, Phytogenic/pharmacology
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Dose-Response Relationship, Drug
- Drugs, Chinese Herbal/pharmacology
- Gene Expression Regulation, Neoplastic
- Homeodomain Proteins/genetics
- Homeodomain Proteins/metabolism
- Humans
- Hyaluronan Receptors/genetics
- Hyaluronan Receptors/metabolism
- Ki-67 Antigen/genetics
- Ki-67 Antigen/metabolism
- Male
- Mice, Nude
- Neoplastic Stem Cells/drug effects
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
- Neovascularization, Pathologic
- Rats, Sprague-Dawley
- Receptor, Notch1/antagonists & inhibitors
- Receptor, Notch1/genetics
- Receptor, Notch1/metabolism
- Signal Transduction/drug effects
- Stomach Neoplasms/blood supply
- Stomach Neoplasms/drug therapy
- Stomach Neoplasms/genetics
- Stomach Neoplasms/metabolism
- Stomach Neoplasms/pathology
- Time Factors
- Transcription Factor HES-1
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
- Xenograft Model Antitumor Assays
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26
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Groeneweg JW, DiGloria CM, Yuan J, Richardson WS, Growdon WB, Sathyanarayanan S, Foster R, Rueda BR. Inhibition of notch signaling in combination with Paclitaxel reduces platinum-resistant ovarian tumor growth. Front Oncol 2014; 4:171. [PMID: 25072022 PMCID: PMC4083224 DOI: 10.3389/fonc.2014.00171] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 06/16/2014] [Indexed: 12/18/2022] Open
Abstract
Introduction: Ovarian cancer (OvCa) is the most lethal gynecologic malignancy in the United States because of chemoresistant recurrent disease. Our objective was to investigate the efficacy of inhibiting the Notch pathway with a γ-secretase inhibitor (GSI) in an OvCa patient-derived xenograft model as a single agent therapy and in combination with standard chemotherapy. Methods: Immunocompromised mice bearing xenografts derived from clinically platinum-sensitive human ovarian serous carcinomas were treated with vehicle, GSI (MRK-003) alone, paclitaxel and carboplatin (P/C) alone, or the combination of GSI and P/C. Mice bearing platinum-resistant xenografts were given GSI with or without paclitaxel. Gene transcript levels of the Notch pathway target Hes1 were analyzed using RT-PCR. Notch1 and Notch3 protein levels were evaluated. The Wilcoxon rank-sum test was used to assess significance between the different treatment groups. Results: Expression of Notch1 and 3 was variable. GSI alone decreased tumor growth in two of three platinum-sensitive ovarian tumors (p < 0.05), as well as in one of three platinum-sensitive tumors (p = 0.04). The combination of GSI and paclitaxel was significantly more effective than GSI alone and paclitaxel alone in all platinum-resistant ovarian tumors (all p < 0.05). The addition of GSI did not alter the effect of P/C in platinum-sensitive tumors. Interestingly, although the response of each tumor to chronic GSI exposure did not correlate with its endogenous level of Notch expression, GSI did negatively affect Notch signaling in an acute setting. Conclusion: Inhibiting the Notch signaling cascade with a GSI reduces primary human xenograft growth in vivo. GSI synergized with conventional cytotoxic chemotherapy only in the platinum-resistant OvCa models with single agent paclitaxel. These findings suggest inhibition of the Notch pathway in concert with taxane therapy may hold promise for treatment of platinum-resistant OvCa.
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Affiliation(s)
- Jolijn W Groeneweg
- Vincent Department of Obstetrics and Gynecology, Vincent Center for Reproductive Biology, Massachusetts General Hospital , Boston, MA , USA ; Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School , Boston, MA , USA
| | - Celeste M DiGloria
- Vincent Department of Obstetrics and Gynecology, Vincent Center for Reproductive Biology, Massachusetts General Hospital , Boston, MA , USA
| | - Jing Yuan
- Merck Research Laboratories , Boston, MA , USA
| | - William S Richardson
- Vincent Department of Obstetrics and Gynecology, Vincent Center for Reproductive Biology, Massachusetts General Hospital , Boston, MA , USA
| | - Whitfield B Growdon
- Vincent Department of Obstetrics and Gynecology, Vincent Center for Reproductive Biology, Massachusetts General Hospital , Boston, MA , USA ; Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School , Boston, MA , USA ; Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Massachusetts General Hospital , Boston, MA , USA
| | | | - Rosemary Foster
- Vincent Department of Obstetrics and Gynecology, Vincent Center for Reproductive Biology, Massachusetts General Hospital , Boston, MA , USA ; Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School , Boston, MA , USA ; Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Massachusetts General Hospital , Boston, MA , USA
| | - Bo R Rueda
- Vincent Department of Obstetrics and Gynecology, Vincent Center for Reproductive Biology, Massachusetts General Hospital , Boston, MA , USA ; Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School , Boston, MA , USA ; Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Massachusetts General Hospital , Boston, MA , USA
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Wang M, Ma X, Wang J, Wang L, Wang Y. Pretreatment with the γ-secretase inhibitor DAPT sensitizes drug-resistant ovarian cancer cells to cisplatin by downregulation of Notch signaling. Int J Oncol 2014; 44:1401-9. [PMID: 24535252 DOI: 10.3892/ijo.2014.2301] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Accepted: 01/30/2014] [Indexed: 11/05/2022] Open
Abstract
Notch signaling is implicated in ovarian cancer tumorigenesis and inhibition of Notch signaling with γ-secretase inhibitor DAPT resulted in reduction of tumor cell viability and induction of apoptosis in ovarian cancer cells. This study investigated whether DAPT has the same effect on ovarian cancer cells that are resistant to cisplatin and the underlying molecular events. Ovarian cancer cell lines resistant to cisplatin were treated with DAPT, cisplatin or combination for cell viability MTT, flow cytometric cell cycle, ELISA apoptosis and colony formation assays. qRT-PCR and western blotting were used to detect gene expressions. We found that pretreatment of ovarian cancer cisplatin-resistant cell lines with DAPT for 24 h and then with cisplatin for 72 h showed a synergistic antitumor activity in these cell lines, while cisplatin treatment and then addition of DAPT just showed an additive or antagonistic effects on these cisplatin-resistant ovarian cancer cells. Moreover, pretreatment of ovarian cancer cell lines with DAPT and then with cisplatin also inhibited tumor cell colony formation capacity, arrested tumor cells at G2 phase of the cell cycle and induced apoptosis. The cell cycle and apoptosis-related genes, such as cyclin B1, Bcl-2 and caspase-3, were also modulated by the treatment. Pretreatment of ovarian cancer cell lines with DAPT and then with cisplatin downregulated Notch1 and Hes1 expression dose- and time-dependently. The current data demonstrate that DAPT pretreatment was able to sensitize cisplatin-resistant human ovarian cancer cells to cisplatin by downregulation of Notch signaling.
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Affiliation(s)
- Mingyi Wang
- Department of Obstetrics and Gynecology, General Hospital of the People's Liberation Army, Chengdu Military Region, P.R. China
| | - Xiangdong Ma
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Jian Wang
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Lin Wang
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Yu Wang
- Department of Obstetrics and Gynecology, General Hospital of the People's Liberation Army, Chengdu Military Region, P.R. China
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Golde TE, Koo EH, Felsenstein KM, Osborne BA, Miele L. γ-Secretase inhibitors and modulators. BIOCHIMICA ET BIOPHYSICA ACTA 2013; 1828:2898-907. [PMID: 23791707 PMCID: PMC3857966 DOI: 10.1016/j.bbamem.2013.06.005] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 06/04/2013] [Indexed: 12/11/2022]
Abstract
γ-Secretase is a fascinating, multi-subunit, intramembrane cleaving protease that is now being considered as a therapeutic target for a number of diseases. Potent, orally bioavailable γ-secretase inhibitors (GSIs) have been developed and tested in humans with Alzheimer's disease (AD) and cancer. Preclinical studies also suggest the therapeutic potential for GSIs in other disease conditions. However, due to inherent mechanism based-toxicity of non-selective inhibition of γ-secretase, clinical development of GSIs will require empirical testing with careful evaluation of benefit versus risk. In addition to GSIs, compounds referred to as γ-secretase modulators (GSMs) remain in development as AD therapeutics. GSMs do not inhibit γ-secretase, but modulate γ-secretase processivity and thereby shift the profile of the secreted amyloid β peptides (Aβ) peptides produced. Although GSMs are thought to have an inherently safe mechanism of action, their effects on substrates other than the amyloid β protein precursor (APP) have not been extensively investigated. Herein, we will review the current state of development of GSIs and GSMs and explore pertinent biological and pharmacological questions pertaining to the use of these agents for select indications. This article is part of a Special Issue entitled: Intramembrane Proteases.
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Affiliation(s)
- Todd E Golde
- Center for Translational Research in Neurodegenerative Disease, Department of Neuroscience, McKnight Brain Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA.
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29
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Hu J, Zhu X, Lu Q. Antiproliferative effects of γ-secretase inhibitor, a Notch signalling inhibitor, in multiple myeloma cells and its molecular mechanism of action. J Int Med Res 2013; 41:1017-26. [PMID: 23839278 DOI: 10.1177/0300060513485912] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES To investigate the effects of γ-secretase inhibitor (GSI), a Notch signalling inhibitor, on the proliferation of multiple myeloma cells in vitro and its molecular mechanism of action. METHODS RPMI 8226 cells were treated with increasing concentrations of GSI (0-20 µmol/l) for 24-72 h. Proliferation was measured using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide (MTT) assay. Cell-cycle analysis was performed on RPMI 8226 cells treated with 0-10 µmol/l GSI for 48 h using flow cytometry. Expression of Notch signalling proteins (Notch1, Jagged 1 and Jagged 2), Bcl-2 and phosphorylated Akt (p-Akt) was determined using Western blotting in RPMI 8226 cells treated with various concentrations of GSI for various time periods. RESULTS GSI inhibited proliferation of RPMI 8226 cells in a concentration- and time-dependent manner by inducing G0/G1 cell-cycle arrest. GSI-mediated antiproliferative effects were associated with significant reductions in the expression of Notch1, Jagged1, Jagged2, p-Akt and Bcl-2. CONCLUSION Inhibition of the Notch signalling pathway by GSI may be a promising therapeutic approach for the treatment of multiple myeloma.
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Affiliation(s)
- Jiasheng Hu
- Department of Haematology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, China
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30
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Triple-negative breast cancer: new perspectives for novel therapies. Med Oncol 2013; 30:653. [DOI: 10.1007/s12032-013-0653-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 06/24/2013] [Indexed: 01/13/2023]
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31
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ZHOU SHAOQIONG, FANG XIN, XIN HUAPING, GUAN SIMING. Effects of alendronate on the Notch1-RBP-Jκ signaling pathway in the osteogenic differentiation and mineralization of vascular smooth muscle cells. Mol Med Rep 2013; 8:89-94. [DOI: 10.3892/mmr.2013.1489] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 05/09/2013] [Indexed: 11/06/2022] Open
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Notch3 induces epithelial-mesenchymal transition and attenuates carboplatin-induced apoptosis in ovarian cancer cells. Gynecol Oncol 2013; 130:200-6. [PMID: 23542683 DOI: 10.1016/j.ygyno.2013.03.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Revised: 03/02/2013] [Accepted: 03/21/2013] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Notch3 is implicated in chemoresistance of ovarian cancer, yet the molecular mechanism underlying Notch3-mediated drug resistance remains to be elucidated. Here, we investigated the role of Notch3 in carboplatin-induced apoptosis in ovarian cancer cells. METHODS Ovarian cancer cell line OVCA429 cells were stably transduced with an empty vector or a retroviral vector expressing the Notch3 intracellular domain (NICD3, the constitutively active form of Notch3) to generate OVCA429/vector and OVCA429/NICD3 cells. Epithelial-mesenchymal transition (EMT) was determined by morphological change and expression of the EMT markers. Carboplatin-induced cytotoxicity was determined by the neutral red uptake assay. Apoptosis was determined by Annexin V staining and Western blotting. Carboplatin-induced phosphorylation of extracellular signal-regulated kinase (ERK) was identified by a phospho-kinase array and confirmed by Western blotting. RESULTS Activation of Notch3 in OVCA429 cells causes a spindle and fibroblast-like morphology, induces the expression of smooth muscle α-actin, Slug and Snail, but decreases the expression of E-cadherin, indicating that Notch3 activation induces EMT in OVCA429 cells. Furthermore, Notch3 activation renders OVCA429 cells more resistant to carboplatin-induced cytotoxicity and attenuates carboplatin-induced apoptosis in these cells. Our results indicate that phosphorylation of ERK is a positive regulator of carboplatin-induced apoptosis in OVCA429 cells. Interestingly, carboplatin-induced ERK phosphorylation is inhibited by Notch3 activation. CONCLUSIONS Notch3 activation induces EMT and attenuates carboplatin-induced apoptosis in OVCA429 cells. ERK phosphorylation plays a pro-apoptotic role in carboplatin-induced apoptosis in OVCA429 cells. Interestingly, Notch3 activation attenuates carboplatin-induced ERK phosphorylation in these cells.
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33
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Manosalva I, González A, Kageyama R. Hes1 in the somatic cells of the murine ovary is necessary for oocyte survival and maturation. Dev Biol 2013; 375:140-51. [DOI: 10.1016/j.ydbio.2012.12.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Revised: 12/18/2012] [Accepted: 12/19/2012] [Indexed: 01/06/2023]
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34
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Galic V, Shawber CJ, Reeves C, Shah M, Murtomaki A, Wright J, Herzog T, Tong GX, Kitajewski J. NOTCH2 expression is decreased in epithelial ovarian cancer and is related to the tumor histological subtype. ACTA ACUST UNITED AC 2013; 1:4. [PMID: 24707357 DOI: 10.7243/2052-7896-1-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Notch family members function as both oncogenes and tumor suppressors. NOTCH2 is down-regulated in colon cancer, and reduced expression is associated with a less differentiated, more aggressive phenotype, and reduced overall survival. NOTCH2 has also been shown to have pro-apoptotic and growth suppressive effects in thyroid carcinoma, and carcinoid tumors. The expression pattern of NOTCH2 in ovarian cancer is unknown. METHODS An immunohistochemical analysis using a polyclonal antibody to the NOTCH2 intracellular domain was performed on a total of 119 ovarian carcinomas, and 7 serous borderline tumors, arranged onto tissue arrays. Normal ovarian and fallopian tube epithelium were used as controls. Specimens were scored as low or high NOTCH2 expression. The score distributions for the subtypes were analyzed with the chi square test. RESULTS Fifty two of 61 (85.2%) papillary serous, eight of 13 (61.5%) clear cell, and 23 of 30 (76.7%) endometrioid, demonstrated negative or lower NOTCH2 expression than normal fallopian tubal epithelium or ovarian surface epithelium. In contrast, 10 of 15 (66.7%) mucinous carcinomas had a high level of NOTCH2 expression and consistently demonstrated intense polarized staining (P<.001). The apical expression of NOTCH2 protein present in the normal fallopian tube epithelium and many borderline tumors was absent in the high grade carcinomas, most notably in papillary serous. CONCLUSION Decreased NOTCH2 expression is associated with the poorly differentiated serous epithelial ovarian carcinoma histology. Further studies are needed to assess the functional role of NOTCH2 in ovarian cancer and its effect on prognosis.
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Affiliation(s)
- Vijaya Galic
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
| | - Carrie J Shawber
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
| | - Claire Reeves
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
| | - Monjri Shah
- Department of Obstetrics and Gynecology, University of Alabama, Birmingham Alabama, United States of America
| | - Aino Murtomaki
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
| | - Jason Wright
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
| | - Thomas Herzog
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
| | - Guo Xia Tong
- Department of Pathology, Columbia University Medical Center, New York, New York, United States of America
| | - Jan Kitajewski
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York, United States of America
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GSI-I has a better effect in inhibiting hepatocellular carcinoma cell growth than GSI-IX, GSI-X, or GSI-XXI. Anticancer Drugs 2012; 23:683-90. [PMID: 22569108 DOI: 10.1097/cad.0b013e3283549a22] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Current studies are ongoing to find new drugs for the treatment of hepatocellular carcinoma (HCC). The discovery of drugs depends on the identification of molecules that can play essential roles in the development of liver cancer, for example, Notch pathway molecules. γ-Secretase inhibitors (GSIs) can inhibit the cleavage of intramembranous substrates of all Notch receptors and subsequently suppress Notch signaling. However, whether the inhibition of the Notch pathway can suppress or promote HCC growth is still under debate. In this study, we examined the expression of Notch pathway molecules in 20 pairs of HCC tissue with their normal counterparts and a panel of eight HCC cell lines. We also determined the effects of different types of GSI treatments on the cell growth of those HCC cell lines. Our results showed that the molecules of the Notch pathway were expressed in six of the eight HCC cell lines. Those six HCC cell lines were more sensitive to GSI-I treatment than the nonexpression ones. Among the four inhibitors, GSI-X and GSI-XXI exerted no effect on HCC cells growth at all. GSI-IX inhibited the growth of four HCC cell lines at 40 μmol/l. In contrast, most of these HCC cell lines were susceptible to a low concentration of GSI-I (1.2 μmol/l) treatment. The suppressive effect of GSI-I on cell growth was because of the inhibition of C-Myc, a Notch target gene. In addition, 80% (16/20) of the specimens showed either an increased expression of at least one Notch receptor or an augmented expression of Jagged1 compared with their normal counterparts. Our study reports for the first time that different kinds of GSIs can block the growth of several HCC cell lines. Our finding suggests that GSI-I is a potential chemical reagent and warrants additional testing in liver cancer therapeutics.
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Sail V, Hadden MK. Identification of small molecule Hes1 modulators as potential anticancer chemotherapeutics. Chem Biol Drug Des 2012; 81:334-42. [PMID: 23006776 DOI: 10.1111/cbdd.12059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hes1 is a key transcriptional regulator primarily controlled by the Notch signaling pathway, and recent studies have demonstrated both an oncogenic and tumor suppressor role for Hes1, depending on the cell type. Small molecules that activate and inhibit Hes1 activity hold promise as future anticancer chemotherapeutics. We have utilized a cell-based dual luciferase assay to identify modulators of Hes1 expression in a medium-throughput format. A modest screen was performed in HCT-116 colon cancer cell lines, and two small molecules were identified and characterized as Hes1 regulators. Compound 3 induced Hes1 expression and exhibited anticancer effects in pulmonary carcinoid tumor cells, a cell type in which the upregulated Notch/Hes1 signaling plays a tumor suppressive role. Treatment of HCT-116 cells with compound 12 resulted in Hes1 downregulation and antitumor effects.
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Affiliation(s)
- Vibhavari Sail
- Department of Pharmaceutical Sciences, University of Connecticut, 69 N Eagleville Rd, Unit 3092, Storrs, CT 06269-3092, USA
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Benelli D, Cialfi S, Pinzaglia M, Talora C, Londei P. The translation factor eIF6 is a Notch-dependent regulator of cell migration and invasion. PLoS One 2012; 7:e32047. [PMID: 22348144 PMCID: PMC3279413 DOI: 10.1371/journal.pone.0032047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Accepted: 01/21/2012] [Indexed: 11/18/2022] Open
Abstract
A growing body of evidence indicates that protein factors controlling translation play an important role in tumorigenesis. The protein known as eIF6 is a ribosome anti-association factor that has been implicated in translational initiation and in ribosome synthesis. Over-expression of eIF6 is observed in many natural tumours, and causes developmental and differentiation defects in certain animal models. Here we show that the transcription of the gene encoding eIF6 is modulated by the receptor Notch-1, a protein involved in embryonic development and cell differentiation, as well as in many neoplasms. Inhibition of Notch-1 signalling by γ-secretase inhibitors slowed down cell-cycle progression and reduced the amount of eIF6 in lymphoblastoid and ovarian cancer cell lines. Cultured ovarian cancer cell lines engineered to stably over-expressing eIF6 did not show significant changes in proliferation rate, but displayed an enhanced motility and invasive capacity. Inhibition of Notch-1 signalling in the cells over-expressing eIF6 was effective in slowing down the cell cycle, but did not reduce cell migration and invasion. On the whole, the results suggest that eIF6 is one of the downstream effectors of Notch-1 in the pathway that controls cell motility and invasiveness.
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Affiliation(s)
- Dario Benelli
- Department of Cellular Biotechnologies and Haematology, University of Rome Sapienza, Rome, Italy
| | - Samantha Cialfi
- Department of Pediatrics and Infantile Neuropsychiatry, University of Rome Sapienza, Rome, Italy
| | - Michela Pinzaglia
- Department of Cellular Biotechnologies and Haematology, University of Rome Sapienza, Rome, Italy
| | - Claudio Talora
- Department of Molecular Medicine, University of Rome Sapienza, Rome, Italy
| | - Paola Londei
- Department of Cellular Biotechnologies and Haematology, University of Rome Sapienza, Rome, Italy
- * E-mail:
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Harris PJ, Speranza G, Dansky Ullmann C. Targeting embryonic signaling pathways in cancer therapy. Expert Opin Ther Targets 2012; 16:131-45. [DOI: 10.1517/14728222.2011.645808] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Sail V, Hadden MK. Notch Pathway Modulators as Anticancer Chemotherapeutics. ANNUAL REPORTS IN MEDICINAL CHEMISTRY VOLUME 47 2012. [DOI: 10.1016/b978-0-12-396492-2.00018-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Effects of N-[N-(3, 5-difluorophenacetyl-L-alanyl)]-S-phenylglycine t-butyl ester (DAPT) on cell proliferation and apoptosis in Ishikawa endometrial cancer cells. Hum Cell 2011; 25:9-15. [PMID: 22189483 DOI: 10.1007/s13577-011-0038-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 12/05/2011] [Indexed: 10/14/2022]
Abstract
Endometrial cancer is one of the most common gynecological malignancies in Japan, where the disease shows an increasing morbidity. However, surgical therapy remains the treatment of choice for endometrial cancers that tend to be insensitive to radiation therapy and chemotherapy. Therefore, novel therapeutic strategies are required. The Notch signaling pathway regulates embryogenesis and cellular development, but deregulated Notch signaling may contribute to tumorigenesis in several cancers. Moreover, γ-secretase inhibitors have been shown to be potent inhibitors of the Notch signaling pathway; they suppress cellular proliferation and induce apoptosis in several cancer cells. In the present study, we investigated the effect of N-[N-(3, 5-difluorophenacetyl-L-alanyl)]-S-phenylglycine t-butyl ester (DAPT, γ-secretase inhibitor) on the cell proliferation and apoptosis in Ishikawa endometrial cancer cells. Real-time PCR detected mRNA derived from NOTCH1 and HES1, which are target genes of the Notch signaling pathway, in Ishikawa endometrial cancer cells. After blocking Notch signaling, cellular proliferation decreased, accompanied by increased expression of p21 mRNA and decreased expression of the cyclin A protein. Furthermore, blockade of Notch signaling induced apoptosis. These results suggest that the Notch signaling pathway may be involved in cell proliferation through cell cycle regulation and apoptosis in Ishikawa endometrial cancer cells. Inhibition of the Notch signaling pathway by γ-secretase inhibitors is expected to be a potential target of novel therapeutic strategies for endometrial cancer.
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McGowan PM, Simedrea C, Ribot EJ, Foster PJ, Palmieri D, Steeg PS, Allan AL, Chambers AF. Notch1 inhibition alters the CD44hi/CD24lo population and reduces the formation of brain metastases from breast cancer. Mol Cancer Res 2011; 9:834-44. [PMID: 21665937 DOI: 10.1158/1541-7786.mcr-10-0457] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Brain metastasis from breast cancer is an increasingly important clinical problem. Here we assessed the role of CD44(hi)/CD24(lo) cells and pathways that regulate them, in an experimental model of brain metastasis. Notch signaling (mediated by γ-secretase) has been shown to contribute to maintenance of the cancer stem cell (CSC) phenotype. Cells sorted for a reduced stem-like phenotype had a reduced ability to form brain metastases compared with unsorted or CD44(hi)/CD24(lo) cells (P < 0.05; Kruskal-Wallis). To assess the effect of γ-secretase inhibition, cells were cultured with DAPT and the CD44/CD24 phenotypes quantified. 231-BR cells with a CD44(hi)/CD24(lo) phenotype was reduced by about 15% in cells treated with DAPT compared with DMSO-treated or untreated cells (P = 0.001, ANOVA). In vivo, mice treated with DAPT developed significantly fewer micro- and macrometastases compared with vehicle treated or untreated mice (P = 0.011, Kruskal-Wallis). Notch1 knockdown reduced the expression of CD44(hi)/CD24(lo) phenotype by about 20%. In vitro, Notch1 shRNA resulted in a reduction in cellular growth at 24, 48, and 72 hours time points (P = 0.033, P = 0.002, and P = 0.009, ANOVA) and about 60% reduction in Matrigel invasion was observed (P < 0.001, ANOVA). Cells transfected with shNotch1 formed significantly fewer macrometastases and micrometastases compared with scrambled shRNA or untransfected cells (P < 0.001; Kruskal-Wallis). These data suggest that the CSC phenotype contributes to the development of brain metastases from breast cancer, and this may arise in part from increased Notch activity.
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Affiliation(s)
- Patricia M McGowan
- Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada.
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Bhoopathi P, Chetty C, Dontula R, Gujrati M, Dinh DH, Rao JS, Lakka SS. SPARC stimulates neuronal differentiation of medulloblastoma cells via the Notch1/STAT3 pathway. Cancer Res 2011; 71:4908-19. [PMID: 21613407 DOI: 10.1158/0008-5472.can-10-3395] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Secreted protein acidic and rich in cysteine (SPARC) participates in the regulation of morphogenesis and cellular differentiation through its modulation of cell-matrix interactions. We previously reported that SPARC expression significantly impairs medulloblastoma tumor growth in vivo. In this study, we show that adenoviral-mediated overexpression of SPARC cDNA (Ad-DsRed-SP) elevated the expression of the neuronal markers NeuN, nestin, neurofilament, and MAP-2 in medulloblastoma cells and induced neuron-like differentiation. SPARC overexpression decreased STAT3 phosphorylation; constitutive expression of STAT3 reversed SPARC-mediated expression of neuronal markers. We also show that Notch signaling is suppressed in the presence of SPARC, as well as the Notch effector basic helix-loop-helix (bHLH) transcription factor hairy and enhancer of split 1 (HES1). Notch signaling was found to be responsible for the decreased STAT3 phosphorylation in response to SPARC expression. Furthermore, expression of SPARC decreased the production of interleukin 6 (IL-6) and supplemented IL-6-abrogated, SPARC-mediated suppression of Notch signaling and expression of neuronal markers. Immunohistochemical analysis of tumor sections from mice treated with Ad-DsRed-SP showed increased immunoreactivity for the neuronal markers and a decrease in Notch1 expression and phosphorylation of STAT3. Taken together, our results suggest that SPARC induces expression of neuronal markers in medulloblastoma cells through its inhibitory effect on IL-6-regulated suppression of Notch pathway-mediated STAT3 signaling, thus giving further support to the potential use of SPARC as a therapeutic candidate for medulloblastoma treatment. Findings show that SPARC-induced neuronal differentiation can sensitize medulloblastoma cells for therapy.
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Affiliation(s)
- Praveen Bhoopathi
- Program of Cancer Biology, Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL 61605, USA
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Ma W, Du J, Chu Q, Wang Y, Liu L, Song M, Wang W. hCLP46 regulates U937 cell proliferation via Notch signaling pathway. Biochem Biophys Res Commun 2011; 408:84-8. [DOI: 10.1016/j.bbrc.2011.03.124] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 03/28/2011] [Indexed: 11/26/2022]
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Chen SM, Liu JP, Zhou JX, Chen C, Deng YQ, Wang Y, Tao ZZ. Suppression of the notch signaling pathway by γ-secretase inhibitor GSI inhibits human nasopharyngeal carcinoma cell proliferation. Cancer Lett 2011; 306:76-84. [PMID: 21420785 DOI: 10.1016/j.canlet.2011.02.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 02/18/2011] [Accepted: 02/21/2011] [Indexed: 12/15/2022]
Abstract
Notch signaling has been suggested to be required for many human cancers. However, the role of Notch signaling in human nasopharyngeal carcinoma cells (NPC) remains unknown. Here, we report that Notch-1, Notch-2, Notch-3 and Notch-4 are all detected in NPC cells. Notch inhibitor, GSI, suppresses the levels of Notch-1, Notch-2 and Notch-4, but not Notch-3. In addition, GSI inhibits NPC cell proliferation by inducing the cell cycle arrest and apoptosis. Furthermore, GSI inhibits the AKT and MEK signaling, without affecting P38 and JNK1/2. Thus, NPC cells may up-regulate Notch signaling to maintain cell proliferation and targeting the Notch signaling pathway may offer a potential alternative strategy for the treatment of NPC.
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Affiliation(s)
- Shi-Ming Chen
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, China
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Huang R, Zhou Q, Veeraragoo P, Yu H, Xiao Z. Notch2/Hes-1 Pathway Plays an Important Role in Renal Ischemia and Reperfusion Injury-Associated Inflammation and Apoptosis and the γ-Secretase Inhibitor DAPT has a Nephroprotective Effect. Ren Fail 2011; 33:207-16. [DOI: 10.3109/0886022x.2011.553979] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Guo S, Liu M, Gonzalez-Perez RR. Role of Notch and its oncogenic signaling crosstalk in breast cancer. Biochim Biophys Acta Rev Cancer 2010; 1815:197-213. [PMID: 21193018 DOI: 10.1016/j.bbcan.2010.12.002] [Citation(s) in RCA: 145] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Revised: 12/15/2010] [Accepted: 12/17/2010] [Indexed: 12/21/2022]
Abstract
The Notch signaling plays a key role in cell differentiation, survival, and proliferation through diverse mechanisms. Notch signaling is also involved in vasculogenesis and angiogenesis. Moreover, Notch expression is regulated by hypoxia and inflammatory cytokines (IL-1, IL-6 and leptin). Entangled crosstalk between Notch and other developmental signaling (Hedgehog and Wnt), and signaling triggered by growth factors, estrogens and oncogenic kinases, could impact on Notch targeted genes. Thus, alterations of the Notch signaling can lead to a variety of disorders, including human malignancies. Notch signaling is activated by ligand binding, followed by ADAM/tumor necrosis factor-α-converting enzyme (TACE) metalloprotease and γ-secretase cleavages that produce the Notch intracellular domain (NICD). Translocation of NICD into the nucleus induces the transcriptional activation of Notch target genes. The relationships between Notch deregulated signaling, cancer stem cells and the carcinogenesis process reinforced by Notch crosstalk with many oncogenic signaling pathways suggest that Notch signaling may be a critical drug target for breast and other cancers. Since current status of knowledge in this field changes quickly, our insight should be continuously revised. In this review, we will focus on recent advancements in identification of aberrant Notch signaling in breast cancer and the possible underlying mechanisms, including potential role of Notch in breast cancer stem cells, tumor angiogenesis, as well as its crosstalk with other oncogenic signaling pathways in breast cancer. We will also discuss the prognostic value of Notch proteins and therapeutic potential of targeting Notch signaling for cancer treatment.
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Affiliation(s)
- Shanchun Guo
- Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
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