1
|
Chen Q, Li S, Fu F, Huang Q, Zhang R. MAP7 drives EMT and cisplatin resistance in ovarian cancer via wnt/β-catenin signaling. Heliyon 2024; 10:e30409. [PMID: 38726137 PMCID: PMC11078642 DOI: 10.1016/j.heliyon.2024.e30409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/12/2024] Open
Abstract
Methods Our approach encompasses analyzing MAP7's expression levels across various datasets and clinical specimens, evaluating its association with patient outcomes, and probing its influence on ovarian cancer cell dynamics such as proliferation, migration, invasion, and apoptosis. Results We have identified significant upregulation of MAP7 in ovarian cancer tissues, which correlates with advanced disease stages, higher pathological grades, and unfavorable prognoses. Functionally, the inhibition of MAP7 suppresses cancer cell proliferation, migration, and invasion while promoting apoptosis. Notably, the silencing of MAP7 attenuates the epithelial-mesenchymal transition (EMT) and disrupts Wnt/β-catenin pathway signaling-two critical processes implicated in metastasis and chemoresistance. In cisplatin-resistant A2780-DDP cells, the downregulation of MAP7 effectively reverses their resistance to cisplatin. Furthermore, the nuclear localization of MAP7 in these cells underscores its pivotal role in driving cisplatin resistance by modulating the transcriptional regulation and interaction dynamics of β-catenin. Conclusion Our findings position MAP7 as a pivotal element in ovarian cancer advancement and cisplatin resistance, primarily through its modulation of EMT and the Wnt/β-catenin pathway. Its association with poor clinical outcomes underscores its potential as both a prognostic marker and a therapeutic target. Strategies aimed at MAP7 could represent a new frontier in combating chemotherapy resistance in ovarian cancer, emphasizing its significance in crafting complementary treatments for this disease.
Collapse
Affiliation(s)
- Qingqing Chen
- The Third School of Clinical Medicine,Southern Medical University, Guangzhou, 510500, China
| | - Shaojing Li
- Shanghai Fengxian District Central Hospital, 6600 Nanfeng Road, Fengxian District, Shanghai, 201400, China
| | - Furong Fu
- Pingyang Hospital affiliated to Wenzhou Medical University, No.555, Kunao Road, Zhejiang Province, China
| | - Qunhuan Huang
- Shanghai Fengxian District Central Hospital, 6600 Nanfeng Road, Fengxian District, Shanghai, 201400, China
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Rong Zhang
- The Third School of Clinical Medicine,Southern Medical University, Guangzhou, 510500, China
- Shanghai Fengxian District Central Hospital, 6600 Nanfeng Road, Fengxian District, Shanghai, 201400, China
| |
Collapse
|
2
|
Kikuchi K, Arata M. The interplay between Wnt signaling pathways and microtubule dynamics. In Vitro Cell Dev Biol Anim 2024; 60:502-512. [PMID: 38349554 DOI: 10.1007/s11626-024-00860-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/17/2024] [Indexed: 02/28/2024]
Abstract
Wnt signaling pathways represent an evolutionarily highly conserved, intricate network of molecular interactions that regulates various aspects of cellular behavior, including embryonic development and tissue homeostasis. Wnt signaling pathways share the β-catenin-dependent (canonical) and the multiple β-catenin-independent (non-canonical) pathways. These pathways collectively orchestrate a wide range of cellular processes through distinct mechanisms of action. Both the β-catenin-dependent and β-catenin-independent pathways are closely intertwined with microtubule dynamics, underscoring the complex crosstalk between Wnt signaling and the cellular cytoskeleton. This interplay involves several mechanisms, including how the components of Wnt signaling can influence the stability, organization, and distribution of microtubules. The modulation of microtubule dynamics by Wnt signaling plays a crucial role in coordinating cellular behaviors and responses to external signals. In this comprehensive review, we discussed the current understanding of how Wnt signaling and microtubule dynamics intersect in various aspects of cellular behavior. This study provides insights into our understanding of these crucial cellular processes.
Collapse
Affiliation(s)
- Koji Kikuchi
- Department of Chromosome Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-Ku, Kumamoto, 860-0811, Japan.
| | - Masaki Arata
- Division of Embryology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| |
Collapse
|
3
|
Adler A, Bangera M, Beugelink JW, Bahri S, van Ingen H, Moores CA, Baldus M. A structural and dynamic visualization of the interaction between MAP7 and microtubules. Nat Commun 2024; 15:1948. [PMID: 38431715 PMCID: PMC10908866 DOI: 10.1038/s41467-024-46260-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 02/21/2024] [Indexed: 03/05/2024] Open
Abstract
Microtubules (MTs) are key components of the eukaryotic cytoskeleton and are essential for intracellular organization, organelle trafficking and mitosis. MT tasks depend on binding and interactions with MT-associated proteins (MAPs). MT-associated protein 7 (MAP7) has the unusual ability of both MT binding and activating kinesin-1-mediated cargo transport along MTs. Additionally, the protein is reported to stabilize MTs with its 112 amino-acid long MT-binding domain (MTBD). Here we investigate the structural basis of the interaction of MAP7 MTBD with the MT lattice. Using a combination of solid and solution-state nuclear magnetic resonance (NMR) spectroscopy with electron microscopy, fluorescence anisotropy and isothermal titration calorimetry, we shed light on the binding mode of MAP7 to MTs at an atomic level. Our results show that a combination of interactions between MAP7 and MT lattice extending beyond a single tubulin dimer and including tubulin C-terminal tails contribute to formation of the MAP7-MT complex.
Collapse
Affiliation(s)
- Agnes Adler
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Mamata Bangera
- Institute of Structural and Molecular Biology, School of Natural Sciences, Birkbeck, University of London, London, WC1E 7HX, UK
| | - J Wouter Beugelink
- Structural Biochemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands
| | - Salima Bahri
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Hugo van Ingen
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Carolyn A Moores
- Institute of Structural and Molecular Biology, School of Natural Sciences, Birkbeck, University of London, London, WC1E 7HX, UK.
| | - Marc Baldus
- NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands.
| |
Collapse
|
4
|
Kuo WH, Chu PY, Wang CC, Huang PS, Chan SH. MAP7D3, a novel prognostic marker for triple-negative breast cancer, drives cell invasiveness and cancer-initiating cell properties to promote metastatic progression. Biol Direct 2023; 18:44. [PMID: 37550720 PMCID: PMC10405500 DOI: 10.1186/s13062-023-00400-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 07/24/2023] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND Patients with triple-negative breast cancer (TNBC) tend to develop visceral metastasis within five years, making them the most challenging BC patients to treat. The MAP7 protein family is a group of microtubule-binding proteins with a well-known role in microtubule-related cell migration, but its role in metastasis-related properties of TNBC remains unclear. METHODS qRT-PCR and western blot were used to validate mRNA and protein expression of the MAP7 family in the isogenic pairs of TNBC cell lines with low and high metastasis potential. Functional characterization of MAP7D3 was carried out using cell-based and mouse models. The clinical association between MAP7D3 and TNBC was established using datasets in the public domain. RESULTS MAP7D3 expression was consistently upregulated in the metastatic subline IV2 and 468-LN at both mRNA and protein levels. Knockdown of MAP7D3 inhibited the 3D colony-forming ability, cell migration, and invasion ability of IV2 and 468-LN, indicating its significant contribution to the metastasis phenotypes. Mechanistically, inhibition of MAP7D3 could significantly increase the sensitivity of metastatic TNBC cells to docetaxel and gemcitabine treatment by reducing the expression of proteins related to breast cancer-initiating cells (BCICs) and drug resistance, as well as suppressing the activity of Rac1. The animal study showed that the depletion of MAP7D3 drastically reduced TNBC tumor growth and impaired the metastatic capability of TNBC cells. Elevated expression of MAP7D3 was found in the metastatic lymph nodes and was significantly associated with advanced stage and higher grade TNBC. Moreover, MAP7D3 expression was significantly correlated with the TNBC population, and its high expression was significantly associated with lymph node metastasis and poor survival outcomes of patients with TNBC. CONCLUSION Our study indicates that targeting MAP7D3 could be a promising therapeutic strategy for addressing the progression of TNBC, and MAP7D3 may serve as a novel predictive biomarker for the survival outcomes of triple-negative breast cancer.
Collapse
Affiliation(s)
- Wen-Hung Kuo
- Department of Surgery, National Taiwan University Hospital, Taipei, 100, Taiwan
| | - Pei-Yi Chu
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, 402, Taiwan
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, 242, Taiwan
- Department of Pathology, Show Chwan Memorial Hospital, Changhua, 500, Taiwan
- National Institute of Cancer Research, National Health Research Institutes, Tainan, 704, Taiwan
| | - Chen-Chi Wang
- Department of Surgery, National Taiwan University Hospital, Taipei, 100, Taiwan
| | - Ping-Shen Huang
- Department of Nutrition, China Medical University, Taichung, 40402, Taiwan
| | - Shih-Hsuan Chan
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.
- Cancer Biology and Precision Therapeutics Center, China Medical University, Taichung, 40402, Taiwan.
- Chinese Medicine Research Center, China Medical University, Taichung, 40402, Taiwan.
| |
Collapse
|
5
|
Adler A, Kjaer LF, Beugelink JW, Baldus M, van Ingen H. Resonance assignments of the microtubule-binding domain of the microtubule-associated protein 7 (MAP7). BIOMOLECULAR NMR ASSIGNMENTS 2023; 17:10.1007/s12104-023-10124-8. [PMID: 37099260 DOI: 10.1007/s12104-023-10124-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/30/2023] [Indexed: 06/02/2023]
Abstract
The microtubule-associated protein 7 (MAP7) is a protein involved in cargo transport along microtubules (MTs) by interacting with kinesin-1 through the C-terminal kinesin-binding domain. Moreover, the protein is reported to stabilize MT, thereby playing a key role in axonal branch development. An important element for this latter function is the 112 amino-acid long N-terminal microtubule-binding domain (MTBD) of MAP7. Here we report NMR backbone and side-chain assignments that suggest a primarily alpha-helical secondary fold of this MTBD in solution. The MTBD contains a central long α-helical segment that includes a short four-residue 'hinge' sequence with decreased helicity and increased flexibility. Our data represent a first step towards analysing the complex interaction of MAP7 with MTs at an atomic level via NMR spectroscopy.
Collapse
Affiliation(s)
- Agnes Adler
- Bijvoet Center for Biomolecular Research, NMR Spectroscopy, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands
| | - Lenette F Kjaer
- Bijvoet Center for Biomolecular Research, NMR Spectroscopy, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands
- Institute of Structural Biology Grenoble, Grenoble, Auvergne-Rhône-Alpes, France
| | - J Wouter Beugelink
- Structural Biochemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands
| | - Marc Baldus
- Bijvoet Center for Biomolecular Research, NMR Spectroscopy, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands.
| | - Hugo van Ingen
- Bijvoet Center for Biomolecular Research, NMR Spectroscopy, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands.
| |
Collapse
|
6
|
Haarman AE, Klaver CC, Tedja MS, Roosing S, Astuti G, Gilissen C, Hoefsloot LH, van Tienhoven M, Brands T, Magielsen FJ, Eussen BH, de Klein A, Brosens E, Verhoeven VJ. Identification of rare variants involved in high myopia unraveled by whole genome sequencing. OPHTHALMOLOGY SCIENCE 2023; 3:100303. [DOI: 10.1016/j.xops.2023.100303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 03/24/2023] [Accepted: 03/31/2023] [Indexed: 04/09/2023]
|
7
|
Dullovi A, Ozgencil M, Rajvee V, Tse WY, Cutillas PR, Martin SA, Hořejší Z. Microtubule-associated proteins MAP7 and MAP7D1 promote DNA double-strand break repair in the G1 cell cycle phase. iScience 2023; 26:106107. [PMID: 36852271 PMCID: PMC9958362 DOI: 10.1016/j.isci.2023.106107] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 12/12/2022] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
The DNA-damage response is a complex signaling network that guards genomic integrity. The microtubule cytoskeleton is involved in the repair of DNA double-strand breaks; however, little is known about which cytoskeleton-related proteins are involved in DNA repair and how. Using quantitative proteomics, we discovered that microtubule associated proteins MAP7 and MAP7D1 interact with several DNA repair proteins including DNA double-strand break repair proteins RAD50, BRCA1 and 53BP1. We observed that downregulation of MAP7 and MAP7D1 leads to increased phosphorylation of p53 after γ-irradiation. Moreover, we determined that the downregulation of MAP7D1 leads to a strong G1 arrest and that the downregulation of MAP7 and MAP7D1 in G1 arrested cells negatively affects DNA repair, recruitment of RAD50 to chromatin and localization of 53BP1 to the sites of damage. These findings describe for the first time a novel function of MAP7 and MAP7D1 in cell cycle regulation and repair of DNA double-strand breaks.
Collapse
Affiliation(s)
- Arlinda Dullovi
- Centre for Cancer Cell & Molecular Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Meryem Ozgencil
- Centre for Cancer Cell & Molecular Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Vinothini Rajvee
- Mass Spectrometry Laboratory, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Wai Yiu Tse
- Centre for Cancer Cell & Molecular Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Pedro R. Cutillas
- Centre for Genomics & Computational Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Sarah A. Martin
- Centre for Cancer Cell & Molecular Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Zuzana Hořejší
- Centre for Cancer Cell & Molecular Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK,Corresponding author
| |
Collapse
|
8
|
Kikuchi K, Sakamoto Y, Uezu A, Yamamoto H, Ishiguro KI, Shimamura K, Saito T, Hisanaga SI, Nakanishi H. Map7D2 and Map7D1 facilitate microtubule stabilization through distinct mechanisms in neuronal cells. Life Sci Alliance 2022; 5:5/8/e202201390. [PMID: 35470240 PMCID: PMC9039348 DOI: 10.26508/lsa.202201390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 12/05/2022] Open
Abstract
The microtubule-associated proteins Map7D2 and Map7D1, which belong to the MAP7 family, stabilize microtubules through distinct mechanisms for the control of cell motility and neurite outgrowth. Microtubule (MT) dynamics are modulated through the coordinated action of various MT-associated proteins (MAPs). However, the regulatory mechanisms underlying MT dynamics remain unclear. We show that the MAP7 family protein Map7D2 stabilizes MTs to control cell motility and neurite outgrowth. Map7D2 directly bound to MTs through its N-terminal half and stabilized MTs in vitro. Map7D2 localized prominently to the centrosome and partially on MTs in mouse N1-E115 neuronal cells, which expresses two of the four MAP7 family members, Map7D2 and Map7D1. Map7D2 loss decreased the resistance to the MT-destabilizing agent nocodazole without affecting acetylated/detyrosinated stable MTs, suggesting that Map7D2 stabilizes MTs via direct binding. In addition, Map7D2 loss increased the rate of random cell migration and neurite outgrowth, presumably by disturbing the balance between MT stabilization and destabilization. Map7D1 exhibited similar subcellular localization and gene knockdown phenotypes to Map7D2. However, in contrast to Map7D2, Map7D1 was required for the maintenance of acetylated stable MTs. Taken together, our data suggest that Map7D2 and Map7D1 facilitate MT stabilization through distinct mechanisms in cell motility and neurite outgrowth.
Collapse
Affiliation(s)
- Koji Kikuchi
- Department of Molecular Pharmacology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yasuhisa Sakamoto
- Department of Molecular Pharmacology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Akiyoshi Uezu
- Department of Cell Biology, Duke University Medical School, Durham, NC, USA
| | - Hideyuki Yamamoto
- Department of Biochemistry, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Kei-Ichiro Ishiguro
- Department of Chromosome Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Kenji Shimamura
- Department of Brain Morphogenesis, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Taro Saito
- Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Japan
| | - Shin-Ichi Hisanaga
- Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Japan
| | - Hiroyuki Nakanishi
- Department of Molecular Pharmacology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| |
Collapse
|
9
|
Rogers S, Scholpp S. Vertebrate Wnt5a - At the crossroads of cellular signalling. Semin Cell Dev Biol 2021; 125:3-10. [PMID: 34686423 DOI: 10.1016/j.semcdb.2021.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/08/2021] [Accepted: 10/08/2021] [Indexed: 02/07/2023]
Abstract
Wnt signalling is an essential pathway in embryogenesis, differentiation, cell motility, development, and adult tissue homeostasis in vertebrates. The Wnt signalling network can activate several downstream pathways such as the β-catenin-dependent TCF/LEF transcription, the Wnt/planar cell polarity (PCP) pathway, and the Wnt/Calcium pathway. Wnt5a is a vertebrate Wnt ligand that is most often associated with the Wnt/PCP signalling pathway. Wnt5a/PCP signalling has a well-described role in embryogenesis via binding to a receptor complex of Frizzled and its co-receptors to initiate downstream activation of the c-Jun N-terminal kinase (JNK) signalling cascade and the Rho and Rac GTPases, Rho-Kinase (ROCK). This activation results in the cytoskeletal remodelling required for cell polarity, migration, and subsequently, tissue re-arrangement and organ formation. This review will focus on more recent work that has revealed new roles for Wnt5a ligands and consequently, an emerging broader function. This is partly due to our growing understanding of the crosstalk between the Wnt/PCP pathway with both the Wnt/β-catenin pathway and other signalling pathways, and in part due to the identification of novel atypical receptors for Wnt5a that demonstrate a far broader role for this ligand.
Collapse
Affiliation(s)
- Sally Rogers
- Living Systems Institute, School of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Steffen Scholpp
- Living Systems Institute, School of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK.
| |
Collapse
|
10
|
Nakayama S, Yano T, Namba T, Konishi S, Takagishi M, Herawati E, Nishida T, Imoto Y, Ishihara S, Takahashi M, Furuta K, Oiwa K, Tamura A, Tsukita S. Planar cell polarity induces local microtubule bundling for coordinated ciliary beating. J Cell Biol 2021; 220:212042. [PMID: 33929515 PMCID: PMC8094116 DOI: 10.1083/jcb.202010034] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023] Open
Abstract
Multiciliated cells (MCCs) in tracheas generate mucociliary clearance through coordinated ciliary beating. Apical microtubules (MTs) play a crucial role in this process by organizing the planar cell polarity (PCP)-dependent orientation of ciliary basal bodies (BBs), for which the underlying molecular basis remains elusive. Herein, we found that the deficiency of Daple, a dishevelled-associating protein, in tracheal MCCs impaired the planar polarized apical MTs without affecting the core PCP proteins, causing significant defects in the BB orientation at the cell level but not the tissue level. Using live-cell imaging and ultra-high voltage electron microscope tomography, we found that the apical MTs accumulated and were stabilized by side-by-side association with one side of the apical junctional complex, to which Daple was localized. In vitro binding and single-molecule imaging revealed that Daple directly bound to, bundled, and stabilized MTs through its dimerization. These features convey a PCP-related molecular basis for the polarization of apical MTs, which coordinate ciliary beating in tracheal MCCs.
Collapse
Affiliation(s)
- Shogo Nakayama
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Integrative Physiology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Tomoki Yano
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Department of Cardiovascular Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Toshinori Namba
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Satoshi Konishi
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Maki Takagishi
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX
| | - Elisa Herawati
- Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta, Indonesia
| | - Tomoki Nishida
- Japan Textile Products Quality and Technology Center, Hyogo, Japan
| | - Yasuo Imoto
- Japan Textile Products Quality and Technology Center, Hyogo, Japan
| | - Shuji Ishihara
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Masahide Takahashi
- Department of Pathology, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,International Center for Cell and Gene Therapy, Fujita Health University, Toyoake, Japan
| | - Ken'ya Furuta
- Advanced Information and Communications Technology Research Institute, National Institute of Information and Communications Technology, Hyogo, Japan
| | - Kazuhiro Oiwa
- Advanced Information and Communications Technology Research Institute, National Institute of Information and Communications Technology, Hyogo, Japan
| | - Atsushi Tamura
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Department of Pharmacology, School of Medicine, Teikyo University, Tokyo, Japan.,Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
| | - Sachiko Tsukita
- Laboratory of Barriology and Cell Biology, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
| |
Collapse
|
11
|
Wu SL, Zhang X, Chang M, Huang C, Qian J, Li Q, Yuan F, Sun L, Yu X, Cui X, Jiang J, Cui M, Liu Y, Wu HW, Liang ZY, Wang X, Niu Y, Tong WM, Jin F. Genome-wide 5-hydroxymethylcytosine Profiling Analysis Identifies MAP7D1 as A Novel Regulator of Lymph Node Metastasis in Breast Cancer. GENOMICS PROTEOMICS & BIOINFORMATICS 2021; 19:64-79. [PMID: 33716151 PMCID: PMC8498923 DOI: 10.1016/j.gpb.2019.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 05/07/2019] [Accepted: 05/31/2019] [Indexed: 11/28/2022]
Abstract
Although DNA 5-hydroxymethylcytosine (5hmC) is recognized as an important epigenetic mark in cancer, its precise role in lymph node metastasis remains elusive. In this study, we investigated how 5hmC associates with lymph node metastasis in breast cancer. Accompanying with high expression of TET1 and TET2 proteins, large numbers of genes in the metastasis-positive primary tumors exhibit higher 5hmC levels than those in the metastasis-negative primary tumors. In contrast, the TET protein expression and DNA 5hmC decrease significantly within the metastatic lesions in the lymph nodes compared to those in their matched primary tumors. Through genome-wide analysis of 8 sets of primary tumors, we identified 100 high-confidence metastasis-associated 5hmC signatures, and it is found that increased levels of DNA 5hmC and gene expression of MAP7D1 associate with high risk of lymph node metastasis. Furthermore, we demonstrate that MAP7D1, regulated by TET1, promotes tumor growth and metastasis. In conclusion, the dynamic 5hmC profiles during lymph node metastasis suggest a link between DNA 5hmC and lymph node metastasis. Meanwhile, the role of MAP7D1 in breast cancer progression suggests that the metastasis-associated 5hmC signatures are potential biomarkers to predict the risk for lymph node metastasis, which may serve as diagnostic and therapeutic targets for metastatic breast cancer.
Collapse
Affiliation(s)
- Shuang-Ling Wu
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China; Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - Xiaoyi Zhang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Center for Bioinformatics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China
| | - Mengqi Chang
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - Changcai Huang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Center for Bioinformatics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China
| | - Jun Qian
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Center for Bioinformatics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China
| | - Qing Li
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - Fang Yuan
- Beijing National Laboratory for Molecular Sciences (BNLMS), MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Lihong Sun
- Center for Experimental Animal Research, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College. Beijing 100005, China
| | - Xinmiao Yu
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China
| | - Xinmiao Cui
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China
| | - Jiayi Jiang
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China
| | - Mengyao Cui
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China
| | - Ye Liu
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China
| | - Huan-Wen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences. Beijing 100005, China
| | - Zhi-Yong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences. Beijing 100005, China
| | - Xiaoyue Wang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Center for Bioinformatics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China
| | - Yamei Niu
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China.
| | - Wei-Min Tong
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China; Center for Experimental Animal Research, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College. Beijing 100005, China.
| | - Feng Jin
- Department of Surgical Oncology and Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110000, China.
| |
Collapse
|
12
|
Tang N, Lyu D, Chang JF, Liu ZT, Zhang Y, Liu HP. Enhanced expression of microtubule-associated protein 7 functioned as a contributor to cervical cancer cell migration and is predictive of adverse prognosis. Cancer Cell Int 2020; 20:354. [PMID: 32760221 PMCID: PMC7392727 DOI: 10.1186/s12935-020-01446-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 07/21/2020] [Indexed: 12/24/2022] Open
Abstract
Background Cervical cancer (CC) is one of the most common female malignancies over the world. Microtubule-associated protein 7 (MAP7) belongs to the family of microtubule-associated proteins (MAPs) which involve in microtubule dynamics and are critical in several important cellular and intracellular activities. This study aimed to investigate the expression and potential role of MAP7 in CC. Methods The expression level of MAP7 in CC tissues and normal tissues were analyzed using the data obtained from The cancer genomes atlas (TCGA) and genotype-tissue expression (GTEx) databases. The prognostic value of MAP7 in patients with CC was analyzed by Kaplan–Meier analysis, Univariate and Multivariate analyses. Moreover, the influences of MAP7 expression alteration on the viability and motility of Caski, HeLa and C-33A cells was measured by CCK8 assay, colony formation assay, scratch assay, and transwell migration and invasion assays. Flow cytometry was conducted to determine cell apoptosis. Western blot was performed to evaluate the impact of MAP7 on the expression of apoptotic-related proteins as well as mitogen-activated protein kinase (MAPK) signaling pathway-related proteins. In vivo tumorigenicity assay was performed to explore the influence of MAP7 on tumor growth. Results Up-regulation of MAP7 was observed in CC tissues and high MAP7 expression was positively correlated with worse prognosis. Multivariate analyses suggested that MAP7 expression can be served as an independent predictor for overall survival of patients with CC. Knockdown of MAP7 markedly suppressed Caski and HeLa cell viability, migration and invasion while notably induced cell apoptosis. Furthermore, depletion of MAP7 in Caski and HeLa cells elevated the expression levels of Active-caspase 3 and Bax, but declined the level of Bcl-2. Whilst, overexpression of MAP7 in C-33A cells presented the opposite outcomes. Additionally, knockdown of MAP7 significantly decreased the phosphorylation of mitogen-activated protein kinase kinase (MEK) and extracellular signal-regulated kinase (ERK) in Caski and HeLa cells, and overexpression of MAP7 increased their phosphorylation in C-33A cells, indicating that MAP7 may regulate the MAPK signaling pathway in CC cells. In vivo assays revealed that knockdown of MAP7 remarkably repressed the growth of CC tumors. Conclusion The results of the present study suggest that MAP7 functions as a promoter during the occurrence and progression of CC, and that MAP7 may serve as a promising therapeutic target in CC.
Collapse
Affiliation(s)
- Ning Tang
- Reproductive Medicine Center, The 960th Hospital of the PLA Joint Logistics Support Force, No. 25 Shifan Road, Tianqiao District, Jinan, Shandong 250031 People's Republic of China
| | - Dan Lyu
- Department of Pain Management, Tianjin First Center Hospital, Tianjin, 300192 People's Republic of China
| | - Jian-Fang Chang
- Reproductive Medicine Center, The 960th Hospital of the PLA Joint Logistics Support Force, No. 25 Shifan Road, Tianqiao District, Jinan, Shandong 250031 People's Republic of China
| | - Zhi-Tao Liu
- Reproductive Medicine Center, The 960th Hospital of the PLA Joint Logistics Support Force, No. 25 Shifan Road, Tianqiao District, Jinan, Shandong 250031 People's Republic of China
| | - Yan Zhang
- Reproductive Medicine Center, The 960th Hospital of the PLA Joint Logistics Support Force, No. 25 Shifan Road, Tianqiao District, Jinan, Shandong 250031 People's Republic of China
| | - Hai-Ping Liu
- Reproductive Medicine Center, The 960th Hospital of the PLA Joint Logistics Support Force, No. 25 Shifan Road, Tianqiao District, Jinan, Shandong 250031 People's Republic of China
| |
Collapse
|
13
|
Astudillo P. Wnt5a Signaling in Gastric Cancer. Front Cell Dev Biol 2020; 8:110. [PMID: 32195251 PMCID: PMC7064718 DOI: 10.3389/fcell.2020.00110] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/10/2020] [Indexed: 12/19/2022] Open
Abstract
Gastric cancer remains an important health challenge, accounting for a significant number of cancer-related deaths worldwide. Therefore, a deeper understanding of the molecular mechanisms involved in gastric cancer establishment and progression is highly desirable. The Wnt pathway plays a fundamental role in development, homeostasis, and disease, and abnormal Wnt signaling is commonly observed in several cancer types. Wnt5a, a ligand that activates the non-canonical branch of the Wnt pathway, can play a role as a tumor suppressor or by promoting cancer cell invasion and migration, although the molecular mechanisms explaining these roles have not been fully elucidated. Wnt5a is increased in gastric cancer samples; however, most gastric cancer cell lines seem to exhibit little expression of this ligand, thus raising the question about the source of this ligand in vivo. This review summarizes available research about Wnt5a expression and signaling in gastric cancer. In gastric cancer, Wnt5a promotes invasion and migration by modulating integrin adhesion turnover. Disheveled, a scaffolding protein with crucial roles in Wnt signaling, mediates the adhesion-related effects of Wnt5a in gastric cancer cells, and several studies provide growing support for a model whereby Disheveled-interacting proteins mediates Wnt5a signaling to modulate cytoskeleton dynamics. However, Wnt5a might induce other effects in gastric cancer cells, such as cell survival and induction of gene expression. On the other hand, the available evidence suggests that Wnt5a might be expressed by cells residing in the tumor microenvironment, where feedback mechanisms sustaining Wnt5a secretion and signaling might be established. This review analyzes the possible functions of Wnt5a in this pathological context and discusses potential links to mechanosensing and YAP/TAZ signaling.
Collapse
Affiliation(s)
- Pablo Astudillo
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
| |
Collapse
|
14
|
Hooikaas PJ, Martin M, Mühlethaler T, Kuijntjes GJ, Peeters CAE, Katrukha EA, Ferrari L, Stucchi R, Verhagen DGF, van Riel WE, Grigoriev I, Altelaar AFM, Hoogenraad CC, Rüdiger SGD, Steinmetz MO, Kapitein LC, Akhmanova A. MAP7 family proteins regulate kinesin-1 recruitment and activation. J Cell Biol 2019; 218:1298-1318. [PMID: 30770434 PMCID: PMC6446838 DOI: 10.1083/jcb.201808065] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/22/2018] [Accepted: 01/22/2019] [Indexed: 02/08/2023] Open
Abstract
Kinesin-1 is responsible for microtubule-based transport of numerous cellular cargoes. Here, we explored the regulation of kinesin-1 by MAP7 proteins. We found that all four mammalian MAP7 family members bind to kinesin-1. In HeLa cells, MAP7, MAP7D1, and MAP7D3 act redundantly to enable kinesin-1-dependent transport and microtubule recruitment of the truncated kinesin-1 KIF5B-560, which contains the stalk but not the cargo-binding and autoregulatory regions. In vitro, purified MAP7 and MAP7D3 increase microtubule landing rate and processivity of kinesin-1 through transient association with the motor. MAP7 proteins promote binding of kinesin-1 to microtubules both directly, through the N-terminal microtubule-binding domain and unstructured linker region, and indirectly, through an allosteric effect exerted by the kinesin-binding C-terminal domain. Compared with MAP7, MAP7D3 has a higher affinity for kinesin-1 and a lower affinity for microtubules and, unlike MAP7, can be cotransported with the motor. We propose that MAP7 proteins are microtubule-tethered kinesin-1 activators, with which the motor transiently interacts as it moves along microtubules.
Collapse
Affiliation(s)
- Peter Jan Hooikaas
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Maud Martin
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Tobias Mühlethaler
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, Villigen, Switzerland
| | - Gert-Jan Kuijntjes
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Cathelijn A E Peeters
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Eugene A Katrukha
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Luca Ferrari
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
| | - Riccardo Stucchi
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Daan G F Verhagen
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Wilhelmina E van Riel
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Ilya Grigoriev
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - A F Maarten Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht Institute for Pharmaceutical Sciences and The Netherlands Proteomics Centre, Utrecht University, Utrecht, Netherlands
| | - Casper C Hoogenraad
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Stefan G D Rüdiger
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
| | - Michel O Steinmetz
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, Villigen, Switzerland
- Biozentrum, University of Basel, Basel, Switzerland
| | - Lukas C Kapitein
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Anna Akhmanova
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| |
Collapse
|
15
|
Xue Y, Zhang L, Zhu Y, Ke X, Wang Q, Min H. Regulation of Proliferation and Epithelial-to-Mesenchymal Transition (EMT) of Gastric Cancer by ZEB1 via Modulating Wnt5a and Related Mechanisms. Med Sci Monit 2019; 25:1663-1670. [PMID: 30829316 PMCID: PMC6413562 DOI: 10.12659/msm.912338] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background As a member of the zinc-finger E-box binding protein (ZEB) family, ZEB1 can modulate onset and progression of various tumors, but its regulatory effect or mechanism in GC has not been defined. Material/Methods GC tumor tissues and adjacent tissues were collected from GC patients across different TNM stages. Real-time PCR was used to measure ZEB1 expression to analyze its correlation with pathological features of tumors. Cultured GC cell lines SGC-7901 and MGC-803 were randomly assigned into control group, scramble group, and ZEB1 siRNA group. Real-time PCR was employed to analyze ZEB1 expression, and MTT approach was used to measure cell proliferation. Cell apoptosis was evaluated by flow cytometry. Wound healing assay was used to detect its effect on cell migration. Expression of E-cadherin and Vimentin involved in epithelial-to-mesenchymal transition (EMT) was measured by Western blot analysis, along with Wnt5a proteins. Results GC tissues had upregulation of ZEB1 (P<0.05 compared to adjacent tissues), whose expression level was correlated with differentiation grade, lymph node metastasis, and tumor pathological stage (P<0.05). Transfection of ZEB1 siRNA into SGC-7901 or MGC-803 cells can suppress ZEB1 expression, inhibit tumor cell proliferation, enhance apoptosis, and inhibit cell migration. Transfected GC cells had higher E-cadherin expression and decreased Vimentin expression or Wnt5a expression (P<0.05 compared to the control group). Conclusions ZEB1 expression is increased in GC tumor tissues and is associated with pathological features. The downregulation of ZEB1 can facilitate cell apoptosis via mediating Wnt5a, further suppressing GC cell proliferation and migration, and reducing EMT occurrence.
Collapse
Affiliation(s)
- Yongju Xue
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Ligong Zhang
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Yu Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Xiquan Ke
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Qizhi Wang
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Haiyang Min
- Department of Gastroenterology, Jiangwan Hospital, Shanghai, China (mainland)
| |
Collapse
|
16
|
Xue Y, Zhang L, Zhu Y, Ke X, Wang Q, Min H. Regulation of Proliferation and Epithelial-to-Mesenchymal Transition (EMT) of Gastric Cancer by ZEB1 via Modulating Wnt5a and Related Mechanisms. MEDICAL SCIENCE MONITOR : INTERNATIONAL MEDICAL JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2019. [PMID: 30829316 DOI: 10.12659/msm.912338.] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND As a member of the zinc-finger E-box binding protein (ZEB) family, ZEB1 can modulate onset and progression of various tumors, but its regulatory effect or mechanism in GC has not been defined. MATERIAL AND METHODS GC tumor tissues and adjacent tissues were collected from GC patients across different TNM stages. Real-time PCR was used to measure ZEB1 expression to analyze its correlation with pathological features of tumors. Cultured GC cell lines SGC-7901 and MGC-803 were randomly assigned into control group, scramble group, and ZEB1 siRNA group. Real-time PCR was employed to analyze ZEB1 expression, and MTT approach was used to measure cell proliferation. Cell apoptosis was evaluated by flow cytometry. Wound healing assay was used to detect its effect on cell migration. Expression of E-cadherin and Vimentin involved in epithelial-to-mesenchymal transition (EMT) was measured by Western blot analysis, along with Wnt5a proteins. RESULTS GC tissues had upregulation of ZEB1 (P<0.05 compared to adjacent tissues), whose expression level was correlated with differentiation grade, lymph node metastasis, and tumor pathological stage (P<0.05). Transfection of ZEB1 siRNA into SGC-7901 or MGC-803 cells can suppress ZEB1 expression, inhibit tumor cell proliferation, enhance apoptosis, and inhibit cell migration. Transfected GC cells had higher E-cadherin expression and decreased Vimentin expression or Wnt5a expression (P<0.05 compared to the control group). CONCLUSIONS ZEB1 expression is increased in GC tumor tissues and is associated with pathological features. The downregulation of ZEB1 can facilitate cell apoptosis via mediating Wnt5a, further suppressing GC cell proliferation and migration, and reducing EMT occurrence.
Collapse
Affiliation(s)
- Yongju Xue
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Ligong Zhang
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Yu Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Xiquan Ke
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Qizhi Wang
- Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Haiyang Min
- Department of Gastroenterology, Jiangwan Hospital, Shanghai, China (mainland)
| |
Collapse
|