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Chen X, Sandrine IK, Yang M, Tu J, Yuan X. MUC1 and MUC16: critical for immune modulation in cancer therapeutics. Front Immunol 2024; 15:1356913. [PMID: 38361923 PMCID: PMC10867145 DOI: 10.3389/fimmu.2024.1356913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024] Open
Abstract
The Mucin (MUC) family, a range of highly glycosylated macromolecules, is ubiquitously expressed in mammalian epithelial cells. Such molecules are pivotal in establishing protective mucosal barriers, serving as defenses against pathogenic assaults. Intriguingly, the aberrant expression of specific MUC proteins, notably Mucin 1 (MUC1) and Mucin 16 (MUC16), within tumor cells, is intimately associated with oncogenesis, proliferation, and metastasis. This association involves various mechanisms, including cellular proliferation, viability, apoptosis resistance, chemotherapeutic resilience, metabolic shifts, and immune surveillance evasion. Due to their distinctive biological roles and structural features in oncology, MUC proteins have attracted considerable attention as prospective targets and biomarkers in cancer therapy. The current review offers an exhaustive exploration of the roles of MUC1 and MUC16 in the context of cancer biomarkers, elucidating their critical contributions to the mechanisms of cellular signal transduction, regulation of immune responses, and the modulation of the tumor microenvironment. Additionally, the article evaluates the latest advances in therapeutic strategies targeting these mucins, focusing on innovations in immunotherapies and targeted drugs, aiming to enhance customization and accuracy in cancer treatments.
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Affiliation(s)
| | | | | | - Jingyao Tu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xianglin Yuan
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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2
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Guo Y, Liu B, Huang T, Qi X, Li S. HOTAIR modulates hepatocellular carcinoma progression by activating FUT8/core-fucosylated Hsp90/MUC1/STAT3 feedback loop via JAK1/STAT3 cascade. Dig Liver Dis 2023; 55:113-122. [PMID: 35504805 DOI: 10.1016/j.dld.2022.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/22/2022] [Accepted: 04/13/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND Glycosylation exhibits crucial effect on hepatocellular carcinoma (HCC) progression. Long non-coding RNAs (lncRNAs) are involved in multilevel regulation of gene transcription during tumor development. The purpose of this study is to clarify the potential mechanism that HOTAIR modulates hepatocellular carcinoma progression by activating FUT8/core-fucosylated Hsp90/MUC1/STAT3 feedback loop via JAK1/STAT3 cascade. METHODS qRT-PCR was used to show the differential expression of genes. Functional experiments were used to measure the malignancy of HCC cells. ChIP and co-IP assays showed the directly interaction of the key molecules. Xenografts was conducted to show the in vivo effects. RESULTS Upregulation of FUT8 showed closely correlation with HCC progression. Core-fucosylation of Hsp90 stabilized MUC1 binding to the downstream p-STAT3, which involved in the activation of JAK1/STAT3 cascade. STAT3 was identified as the regulator of FUT8 and MUC1 transcription, while FUT8 and MUC1 impacted STAT3 level both in nuclear and cytoplasm. HOTAIR recruited P300 to efficiently bind with STAT3. The transcript complex co-modulated the transcrption of FUT8 and MUC1. Moreover, highly HOTAIR expression also exhibited closely correlation with HCC progression. CONCLUSIONS FUT8 triggered core-fucosylated-Hsp90/MUC1/P300-HOTAIR-STAT3 cascade via JAK1/STAT3 pathway, which exhibited as positive feedback loop during HCC progression.
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Affiliation(s)
- Yanru Guo
- Department of Clinical Laboratory, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, China
| | - Bing Liu
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Tong Huang
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Xia Qi
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Shijun Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, China; College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning 116044, China.
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3
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The oncoprotein MUC1 facilitates breast cancer progression by promoting Pink1-dependent mitophagy via ATAD3A destabilization. Cell Death Dis 2022; 13:899. [PMID: 36289190 PMCID: PMC9606306 DOI: 10.1038/s41419-022-05345-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/04/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022]
Abstract
Mitophagy is a vital process that controls mitochondria quality, dysregulation of which can promote cancer. Oncoprotein mucin 1 (MUC1) targets mitochondria to attenuate drug-induced apoptosis. However, little is known about whether and how MUC1 contributes to mitochondrial homeostasis in cancer cells. We identified a novel role of MUC1 in promoting mitophagy. Increased mitophagy is coupled with the translocation of MUC1 to mitochondria, where MUC1 interacts with and induces degradation of ATPase family AAA domain-containing 3A (ATAD3A), resulting in protection of PTEN-induced kinase 1 (Pink1) from ATAD3A-mediated cleavage. Interestingly, MUC1-induced mitophagy is associated with increased oncogenicity of cancer cells. Similarly, inhibition of mitophagy significantly suppresses MUC1-induced cancer cell activity in vitro and in vivo. Consistently, MUC1 and ATAD3A protein levels present an inverse relationship in tumor tissues of breast cancer patients. Our data validate that MUC1/ATAD3A/Pink1 axis-mediated mitophagy constitutes a novel mechanism for maintaining the malignancy of cancer cells, providing a novel therapeutic approach for MUC1-positive cancers.
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4
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Seymour F, Carmichael J, Taylor C, Parrish C, Cook G. Immune senescence in multiple myeloma-a role for mitochondrial dysfunction? Leukemia 2022; 36:2368-2373. [PMID: 35879358 DOI: 10.1038/s41375-022-01653-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 07/02/2022] [Accepted: 07/11/2022] [Indexed: 11/09/2022]
Abstract
Age-related immune dysfunction is primarily mediated by immunosenescence which results in ineffective clearance of infective pathogens, poor vaccine responses and increased susceptibility to multi-morbidities. Immunosenescence-related immunometabolic abnormalities are associated with accelerated aging, an inflammatory immune response (inflammaging) and ultimately frailty syndromes. In addition, several conditions can accelerate the development of immunosenescence, including cancer. This is a bi-directional interaction since inflammaging may create a permissive environment for tumour development. Multiple myeloma (MM) is a mature B-cell malignancy that presents in the older population. MM exemplifies the interaction of age- (Host Response Biology; HRB) and disease-related immunological dysfunction, contributing to the development of a frailty syndrome which impairs the therapeutic impact of recent advances in treatment strategies. Understanding the mechanisms by which accelerated immunological aging is induced and the ways in which a tumour such as MM influences this process is key to overcoming therapeutic barriers. A link between cellular mitochondrial dysfunction and the acquisition of an abnormal immune phenotype has recently been described and has widespread physiological consequence beyond the impact on the immune system. Here we outline our current understanding of normal immune aging, describe the mechanism of immunometabolic dysfunction in accelerating this process, and propose the role these processes are playing in the pathogenesis of MM.
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Affiliation(s)
- Frances Seymour
- Department of Haematology, Leeds Cancer Centre, Leeds Teaching Hospitals Trust, Leeds, UK.
| | - Jonathan Carmichael
- Department of Haematology, Leeds Cancer Centre, Leeds Teaching Hospitals Trust, Leeds, UK
- NIHR (Leeds) Medtech & In vitro Diagnostic Cooperative, Leeds, UK
| | - Claire Taylor
- Experimental Haematology, Leeds Institute of Medical Research, University of Leeds UK, Leeds, UK
| | - Christopher Parrish
- Department of Haematology, Leeds Cancer Centre, Leeds Teaching Hospitals Trust, Leeds, UK
- Cancer Research UK Clinical Trials Unit, Leeds Institute of Clinical Trial Research, University of Leeds UK, Leeds, UK
| | - Gordon Cook
- Department of Haematology, Leeds Cancer Centre, Leeds Teaching Hospitals Trust, Leeds, UK
- NIHR (Leeds) Medtech & In vitro Diagnostic Cooperative, Leeds, UK
- Cancer Research UK Clinical Trials Unit, Leeds Institute of Clinical Trial Research, University of Leeds UK, Leeds, UK
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5
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Kufe DW. Emergence of MUC1 in Mammals for Adaptation of Barrier Epithelia. Cancers (Basel) 2022; 14:cancers14194805. [PMID: 36230728 PMCID: PMC9564314 DOI: 10.3390/cancers14194805] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
The mucin 1 (MUC1) gene was discovered based on its overexpression in human breast cancers. Subsequent work demonstrated that MUC1 is aberrantly expressed in cancers originating from other diverse organs, including skin and immune cells. These findings supported a role for MUC1 in the adaptation of barrier tissues to infection and environmental stress. Of fundamental importance for this evolutionary adaptation was inclusion of a SEA domain, which catalyzes autoproteolysis of the MUC1 protein and formation of a non-covalent heterodimeric complex. The resulting MUC1 heterodimer is poised at the apical cell membrane to respond to loss of homeostasis. Disruption of the complex releases the MUC1 N-terminal (MUC1-N) subunit into a protective mucous gel. Conversely, the transmembrane C-terminal (MUC1-C) subunit activates a program of lineage plasticity, epigenetic reprogramming and repair. This MUC1-C-activated program apparently evolved for barrier tissues to mount self-regulating proliferative, inflammatory and remodeling responses associated with wound healing. Emerging evidence indicates that MUC1-C underpins inflammatory adaptation of tissue stem cells and immune cells in the barrier niche. This review focuses on how prolonged activation of MUC1-C by chronic inflammation in these niches promotes the cancer stem cell (CSC) state by establishing auto-inductive nodes that drive self-renewal and tumorigenicity.
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Affiliation(s)
- Donald W Kufe
- Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, D830, Boston, MA 02215, USA
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6
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Addiction of Cancer Stem Cells to MUC1-C in Triple-Negative Breast Cancer Progression. Int J Mol Sci 2022; 23:ijms23158219. [PMID: 35897789 PMCID: PMC9331006 DOI: 10.3390/ijms23158219] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 02/01/2023] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive malignancy with limited treatment options. TNBC progression is associated with expansion of cancer stem cells (CSCs). Few insights are available regarding druggable targets that drive the TNBC CSC state. This review summarizes the literature on TNBC CSCs and the compelling evidence that they are addicted to the MUC1-C transmembrane protein. In normal epithelia, MUC1-C is activated by loss of homeostasis and induces reversible wound-healing responses of inflammation and repair. However, in settings of chronic inflammation, MUC1-C promotes carcinogenesis. MUC1-C induces EMT, epigenetic reprogramming and chromatin remodeling in TNBC CSCs, which are dependent on MUC1-C for self-renewal and tumorigenicity. MUC1-C-induced lineage plasticity in TNBC CSCs confers DNA damage resistance and immune evasion by chronic activation of inflammatory pathways and global changes in chromatin architecture. Of therapeutic significance, an antibody generated against the MUC1-C extracellular domain has been advanced in a clinical trial of anti-MUC1-C CAR T cells and in IND-enabling studies for development as an antibody–drug conjugate (ADC). Agents targeting the MUC1-C cytoplasmic domain have also entered the clinic and are undergoing further development as candidates for advancing TNBC treatment. Eliminating TNBC CSCs will be necessary for curing this recalcitrant cancer and MUC1-C represents a promising druggable target for achieving that goal.
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7
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Behl A, Sarwalia P, Kumar S, Behera C, Mintoo MJ, Datta TK, Gupta PN, Chhillar AK. Codelivery of Gemcitabine and MUC1 Inhibitor Using PEG-PCL Nanoparticles for Breast Cancer Therapy. Mol Pharm 2022; 19:2429-2440. [PMID: 35639628 DOI: 10.1021/acs.molpharmaceut.2c00175] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In breast cancer therapy, Gemcitabine (Gem) is an antineoplastic antimetabolite with greater anticancer efficacy and tolerability. However, effectiveness of Gem is limited by its off-target effects. The synergistic potential of MUC1 (mucin 1) inhibitors and Gem-loaded polymeric nanoparticles (NPs) was discussed in this work in order to reduce dose-related toxicities and enhance the therapeutic efficacy. The double emulsion solvent evaporation method was used to prepare poly(ethylene glycol) methyl ether-block-poly-caprolactone (PEG-PCL)-loaded Gem and MUC 1 inhibitor NPs. The average size of Gem and MUC 1 inhibitor-loaded NPs was 128 nm, with a spherical shape. Twin-loaded NPs containing Gem and the MUC1 inhibitor decreased IC50 and behaved synergistically. Furthermore, in vitro mechanistic studies, that is, loss of MMP, clonogenic assay, Annexin V FITC assay, and Western blotting to confirm apoptosis with simultaneous induction of autophagy using acridine orange (AO) staining were performed in this study. Furthermore, the investigated NPs upon combination exhibited greater loss of MMP and decreased clonogenic potential with simultaneous induction of autophagy in MCF-7 cells. Annexin V FITC clearly showed the percentage of apoptosis while Western blotting protein expression analysis revealed an increase in caspase-3 activity with simultaneous decrease in Bcl-2 protein expression, a hallmark of apoptosis. The effectiveness of the Ehrlich ascites solid (EAT) mice treated with Gem-MUC1 inhibitor NPs was higher than that of the animals treated alone. Overall, the combined administration of Gem and MUC1 inhibitor-loaded NPs was found to be more efficacious than Gem and MUC1 inhibitor delivered separately.
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Affiliation(s)
- Akanksha Behl
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana 124 001, India
| | - Parul Sarwalia
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Sushil Kumar
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Chittaranjan Behera
- PK-PD Tox and Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Mubashir Javed Mintoo
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Tirtha Kumar Datta
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Prem N Gupta
- PK-PD Tox and Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Anil K Chhillar
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana 124 001, India
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8
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Hosseinzadeh A, Merikhian P, Naseri N, Eisavand MR, Farahmand L. MUC1 is a potential target to overcome trastuzumab resistance in breast cancer therapy. Cancer Cell Int 2022; 22:110. [PMID: 35248049 PMCID: PMC8897942 DOI: 10.1186/s12935-022-02523-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 02/12/2022] [Indexed: 02/07/2023] Open
Abstract
Although resistance is its major obstacle in cancer therapy, trastuzumab is the most successful agent in treating epidermal growth factor receptor 2 positive (HER2 +) breast cancer (BC). Some patients show resistance to trastuzumab, and scientists want to circumvent this problem. This review elaborately discusses possible resistance mechanisms to trastuzumab and introduces mucin 1 (MUC1) as a potential target efficient for overcoming such resistance. MUC1 belongs to the mucin family, playing the oncogenic/mitogenic roles in cancer cells and interacting with several other oncogenic receptors and pathways, such as HER2, β-catenin, NF-κB, and estrogen receptor (ERα). Besides, it has been established that MUC1- Cytoplasmic Domain (MUC1-CD) accelerates the development of resistance to trastuzumab and that silencing MUC1-C proto-oncogene is associated with increased sensitivity of HER2+ cells to trastuzumab-induced growth inhibitors. We mention why targeting MUC1 can be useful in overcoming trastuzumab resistance in cancer therapy.
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9
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Sharifi Tabar M, Francis H, Yeo D, Bailey CG, Rasko JEJ. Mapping oncogenic protein interactions for precision medicine. Int J Cancer 2022; 151:7-19. [PMID: 35113472 PMCID: PMC9306658 DOI: 10.1002/ijc.33954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 11/10/2022]
Abstract
Normal protein‐protein interactions (normPPIs) occur with high fidelity to regulate almost every physiological process. In cancer, this highly organised and precisely regulated network is disrupted, hijacked or reprogrammed resulting in oncogenic protein‐protein interactions (oncoPPIs). OncoPPIs, which can result from genomic alterations, are a hallmark of many types of cancers. Recent technological advances in the field of mass spectrometry (MS)‐based interactomics, structural biology and drug discovery have prompted scientists to identify and characterise oncoPPIs. Disruption of oncoPPI interfaces has become a major focus of drug discovery programs and has resulted in the use of PPI‐specific drugs clinically. However, due to several technical hurdles, studies to build a reference oncoPPI map for various cancer types have not been undertaken. Therefore, there is an urgent need for experimental workflows to overcome the existing challenges in studying oncoPPIs in various cancers and to build comprehensive reference maps. Here, we discuss the important hurdles for characterising oncoPPIs and propose a three‐phase multidisciplinary workflow to identify and characterise oncoPPIs. Systematic identification of cancer‐type‐specific oncogenic interactions will spur new opportunities for PPI‐focused drug discovery projects and precision medicine.
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Affiliation(s)
- Mehdi Sharifi Tabar
- Gene & Stem Cell Therapy Program Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Cancer & Gene Regulation Laboratory Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Faculty of Medicine & Health, The University of Sydney, Sydney, NSW, Australia
| | - Habib Francis
- Gene & Stem Cell Therapy Program Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Cancer & Gene Regulation Laboratory Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Faculty of Medicine & Health, The University of Sydney, Sydney, NSW, Australia
| | - Dannel Yeo
- Faculty of Medicine & Health, The University of Sydney, Sydney, NSW, Australia.,Li Ka Shing Cell & Gene Therapy Program, The University of Sydney, Camperdown, NSW, Australia.,Cell & Molecular Therapies, Royal Prince Alfred Hospital, Sydney Local Health District, Camperdown, NSW, Australia
| | - Charles G Bailey
- Gene & Stem Cell Therapy Program Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Cancer & Gene Regulation Laboratory Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Faculty of Medicine & Health, The University of Sydney, Sydney, NSW, Australia
| | - John E J Rasko
- Gene & Stem Cell Therapy Program Centenary Institute, The University of Sydney, Camperdown, NSW, Australia.,Faculty of Medicine & Health, The University of Sydney, Sydney, NSW, Australia.,Li Ka Shing Cell & Gene Therapy Program, The University of Sydney, Camperdown, NSW, Australia.,Cell & Molecular Therapies, Royal Prince Alfred Hospital, Sydney Local Health District, Camperdown, NSW, Australia
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10
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Vafaei R, Samadi M, Hosseinzadeh A, Barzaman K, Esmailinejad M, Khaki Z, Farahmand L. Comparison of mucin-1 in human breast cancer and canine mammary gland tumor: a review study. Cancer Cell Int 2022; 22:14. [PMID: 35000604 PMCID: PMC8744232 DOI: 10.1186/s12935-021-02398-6] [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: 08/22/2021] [Accepted: 12/08/2021] [Indexed: 11/10/2022] Open
Abstract
Mucin-1 (MUC-1) is a transmembrane glycoprotein, which bears many similarities between dogs and humans. Since the existence of animal models is essential to understand the significant factors involved in breast cancer mechanisms, canine mammary tumors (CMTs) could be used as a spontaneously occurring tumor model for human studies. Accordingly, this review assessed the comparison of canine and human MUC-1 based on their diagnostic and therapeutic aspects and showed how comparative oncology approaches could provide insights into translating pre-clinical trials from human to veterinary oncology and vice versa which could benefit both humans and dogs.
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Affiliation(s)
- Rana Vafaei
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, No.146, South Gandi Ave, Vanak Sq, Tehran, Iran
| | - Mitra Samadi
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, No.146, South Gandi Ave, Vanak Sq, Tehran, Iran
| | - Aysooda Hosseinzadeh
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, No.146, South Gandi Ave, Vanak Sq, Tehran, Iran
| | - Khadijeh Barzaman
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, No.146, South Gandi Ave, Vanak Sq, Tehran, Iran
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - MohammadReza Esmailinejad
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Zohreh Khaki
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, No.146, South Gandi Ave, Vanak Sq, Tehran, Iran.
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Leila Farahmand
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, No.146, South Gandi Ave, Vanak Sq, Tehran, Iran.
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11
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Kumar AR, Devan AR, Nair B, Nair RR, Nath LR. Biology, Significance and Immune Signaling of Mucin 1 in Hepatocellular Carcinoma. Curr Cancer Drug Targets 2022; 22:725-740. [PMID: 35301949 DOI: 10.2174/1568009622666220317090552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 12/14/2021] [Accepted: 12/21/2021] [Indexed: 02/08/2023]
Abstract
Mucin 1 (MUC 1) is a highly glycosylated tumor-associated antigen (TAA) overexpressed in hepatocellular carcinoma (HCC). This protein plays a critical role in various immune-mediated signaling pathways at its transcriptional and post-transcriptional levels, leading to immune evasion and metastasis in HCC. HCC cells maintain an immune-suppressive environment with the help of immunesuppressive tumor-associated antigens, resulting in a metastatic spread of the disease. The development of intense immunotherapeutic strategies to target tumor-associated antigen is critical to overcoming the progression of HCC. MUC 1 remains the most recognized tumor-associated antigen since its discovery over 30 years ago. A few promising immunotherapies targeting MUC 1 are currently under clinical trials, including CAR-T and CAR-pNK-mediated therapies. This review highlights the biosynthesis, significance, and clinical implication of MUC 1 as an immune target in HCC.
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Affiliation(s)
- Ayana R Kumar
- Department of Pharmacognosy, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi-682041, Kerala, India
| | - Aswathy R Devan
- Department of Pharmacognosy, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi-682041, Kerala, India
| | - Bhagyalakshmi Nair
- Department of Pharmacognosy, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi-682041, Kerala, India
| | | | - Lekshmi R Nath
- Department of Pharmacognosy, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi-682041, Kerala, India
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12
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Abstract
A dynamic mucosal layer shields the epithelial cells lining the body cavities and is made up of high molecular weight, heavily glycosylated, multidomain proteins called mucins. Mucins, broadly grouped into transmembrane and secreted mucins, are the first responders to any mechanical or chemical insult to the epithelia and help maintain tissue homeostasis. However, their intrinsic properties to protect and repair the epithelia are exploited during oncogenic processes, where mucins are metamorphosed to aid the tumor cells in their malignant journey. Diverse domains, like the variable number tandem repeats (VNTR), sea urchin sperm protein enterokinase and agrin (SEA), adhesion-associated domain (AMOP), nidogen-like domain (NIDO), epidermal growth factor-like domain (EGF), and von Willebrand factor type D domain (vWD) on mucins, including MUC1, MUC4, MUC5AC, MUC5B, and MUC16, have been shown to facilitate cell-to-cell and cell-to-matrix interactions, and cell-autonomous signaling to promote tumorigenesis and distant dissemination of tumor cells. Several obstacles have limited the study of mucins, including technical difficulties in working with these huge glycoproteins, the dearth of scientific tools, and lack of animal models; thus, the tissue-dependent and domain-specific roles of mucins during mucosal protection, chronic inflammation, tumorigenesis, and hematological dissemination of malignant cells are still unclear. Future studies should try to integrate information on the rheological, molecular, and biological characteristics of mucins to comprehensively delineate their pathophysiological role and evaluate their suitability as targets in future diagnostic and therapeutic strategies.
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13
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Bose M, Mukherjee P. Potential of Anti-MUC1 Antibodies as a Targeted Therapy for Gastrointestinal Cancers. Vaccines (Basel) 2020; 8:E659. [PMID: 33167508 PMCID: PMC7712407 DOI: 10.3390/vaccines8040659] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/27/2020] [Accepted: 11/03/2020] [Indexed: 02/06/2023] Open
Abstract
Gastrointestinal cancers (GI) account for 26% of cancer incidences globally and 35% of all cancer-related deaths. The main challenge is to target cancer specific antigens. Mucins are heavily O-glycosylated proteins overexpressed in different cancers. The transmembrane glycoprotein MUC1 is the most likeable target for antibodies, owing to its specific overexpression and aberrant glycosylation in many types of cancers. For the past 30 years, MUC1 has remained a possible diagnostic marker and therapeutic target. Despite initiation of numerous clinical trials, a comprehensively effective therapy with clinical benefit is yet to be achieved. However, the interest in MUC1 as a therapeutic target remains unaltered. For all translational studies, it is important to incorporate updated relevant research findings into therapeutic strategies. In this review we present an overview of the antibodies targeting MUC1 in GI cancers, their potential role in immunotherapy (i.e., antibody-drug and radioimmunoconjugates, CAR-T cells), and other novel therapeutic strategies. We also present our perspectives on how the mechanisms of action of different anti-MUC1 antibodies can target specific hallmarks of cancer and therefore be utilized as a combination therapy for better clinical outcomes.
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Affiliation(s)
- Mukulika Bose
- Department of Biological Sciences, University of North Carolina, Charlotte, NC 28223, USA;
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14
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Zhou C, Zhang C, Zhu H, Liu Z, Su H, Zhang X, Chen T, Zhong Y, Hu H, Xiong M, Zhou H, Xu Y, Zhang A, Zhang N. Allosteric Regulation of Hsp90α's Activity by Small Molecules Targeting the Middle Domain of the Chaperone. iScience 2020; 23:100857. [PMID: 32058968 PMCID: PMC6997908 DOI: 10.1016/j.isci.2020.100857] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/20/2019] [Accepted: 01/15/2020] [Indexed: 12/11/2022] Open
Abstract
Hsp90 is a target for anti-cancer drug development. Both the conformational events tuned by ATP/ADP and co-chaperones and the chaperoning cycle timing are required for Hsp90's fully functional display. Interfering with either one of the conformational events or the cycle timing will down-regulate Hsp90's function. In this manuscript, non-covalent allosteric modulators (SOMCL-16-171 and SOMCL-16-175) targeting Hsp90α’s middle domain (Hsp90M) were developed for the first time. Multiple techniques were then applied to characterize the interactions between two active compounds and Hsp90α. Two loops and one α-helix (F349-N360, K443-E451, and D372-G387) in Hsp90M were identified responsible for the recognition of SOMCL-16-171 and SOMCL-16-175. Meanwhile, the binding of SOMCL-16-171 and SOMCL-16-175 to Hsp90M was demonstrated to allosterically modulate the structure and function of Hsp90α’s N-terminal domain. Finally, cellular assays were conducted to evaluate the cellular activity of SOMCL-16-175, and the results indicate that SOMCL-16-175 destabilizes Hsp90's client proteins and reduces cell viability. Allosteric modulators targeting Hsp90α's middle domain were developed for the first time Key elements in Hsp90M for the recognition of allosteric modulators were identified Compound SOMCL-16-175 promotes Hsp90α’s ATPase activity and reduces cell viability SOMCL-16-175 destabilizes Hsp90's clients without triggering heat shock response
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Affiliation(s)
- Chen Zhou
- Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Chi Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Hongwen Zhu
- Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Zhijun Liu
- National Facility for Protein Science in Shanghai, ZhangJiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Haixia Su
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Xianglei Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Tingting Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Yan Zhong
- Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Huifang Hu
- Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Muya Xiong
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Hu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Yechun Xu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China.
| | - Ao Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China.
| | - Naixia Zhang
- Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China.
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15
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Zhu HQ, Gao FH. Regulatory Molecules and Corresponding Processes of BCR-ABL Protein Degradation. J Cancer 2019; 10:2488-2500. [PMID: 31258755 PMCID: PMC6584333 DOI: 10.7150/jca.29528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 05/02/2019] [Indexed: 12/24/2022] Open
Abstract
The BCR-ABL fusion protein with strong tyrosine kinase activity is one of the molecular biological bases of leukemia. Imatinib (Gleevec), a specific targeted drug for the treatment of chronic myeloid leukemia (CML), was developed for inhibiting the kinase activity of the BCR-ABL fusion protein. Despite the positive clinical efficacy of imatinib, the proportion of imatinib resistance has gradually increased. The main reason for the resistance is a decrease in sensitivity to imatinib caused by mutation or amplification of the BCR-ABL gene. In response to this phenomenon, the new generation of tyrosine kinase inhibitors (TKIs) targeting the BCR-ABL fusion protein was developed to solve the problem. However this strategy only selectively inhibits the tyrosine kinase activity of the BCR-ABL protein without eliminating the BCR-ABL protein, it does not fundamentally cure the BCR-ABL-positive leukemia patients. With the accumulation of the knowledge of cellular molecular biology, it has become possible to specifically eliminate certain proteins by cellular proteases in a specific way. Therefore, the therapeutic strategy to induce the degradation of the BCR-ABL fusion protein is superior to the strategy of inhibiting its activity. The protein degradation strategy is also a solution to the TKI resistance caused by different BCR-ABL gene point mutations. In order to provide possible exploration directions and clues for eliminating the BCR-ABL fusion protein in tumor cells, we summarize the significant molecules involved in the degradation pathway of the BCR-ABL protein, as well as the reported potent compounds that can target the BCR-ABL protein for degradation.
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Affiliation(s)
- Han-Qing Zhu
- Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Feng-Hou Gao
- Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
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16
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GongSun X, Zhao Y, Jiang B, Xin Z, Shi M, Song L, Qin Q, Wang Q, Liu X. Inhibition of MUC1-C regulates metabolism by AKT pathway in esophageal squamous cell carcinoma. J Cell Physiol 2018; 234:12019-12028. [PMID: 30523643 PMCID: PMC6587484 DOI: 10.1002/jcp.27863] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/13/2018] [Indexed: 12/13/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most common digestive tumors worldwide. The Mucin 1 (MUC1) heterodimeric protein has been confirmed that is overexpressed in ESCC and induced adverse outcomes. However, the detailed mechanism(s) remained challenging. So, we investigated the relationship between MUC1‐C and metabolism in ESCC cells. In the results, TP53‐induced glycolysis and apoptosis regulator (TIGAR) was overexpressed and correlative with MUC1‐C positively in ESCC tissue. Targeting MUC1‐C inhibits AKT–mTORC–S6K1 signaling and blocks TIGAR translation. We found that the inhibitory effect of GO‐203 on TIGAR was mediated by inhibition of AKT–mTOR–S6K1 pathway. The findings also demonstrated that the suppressive effect of GO‐203 on TIGAR is related to the decrease of glutathione level, the increase of reactive oxygen species and the loss of mitochondrial transmembrane membrane potential. In xenograft tissues, GO‐203 inhibited the growth of ESCC cells and lead to the low expression of transmembrane C‐terminal subunit (MUC1‐C) and TIGAR. This evidence supports the contention that MUC1‐C is significant for metabolism in ESCC and indicated that MUC1‐C is a potential target for the treatment of ESCC.
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Affiliation(s)
- Xin GongSun
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - YongQiang Zhao
- Department of Thoracic Surgery, Laiwu City People's Hospital, Laiwu, Shandong, China
| | - Bin Jiang
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - ZhongWei Xin
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Mo Shi
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Liang Song
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - QiMing Qin
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Qiang Wang
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - XiangYan Liu
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
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17
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Hiraki M, Maeda T, Mehrotra N, Jin C, Alam M, Bouillez A, Hata T, Tagde A, Keating A, Kharbanda S, Singh H, Kufe D. Targeting MUC1-C suppresses BCL2A1 in triple-negative breast cancer. Signal Transduct Target Ther 2018; 3:13. [PMID: 29760958 PMCID: PMC5948210 DOI: 10.1038/s41392-018-0013-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/28/2018] [Accepted: 03/08/2018] [Indexed: 12/18/2022] Open
Abstract
B-cell lymphoma 2-related protein A1 (BCL2A1) is a member of the BCL-2 family of anti-apoptotic proteins that confers resistance to treatment with anti-cancer drugs; however, there are presently no agents that target BCL2A1. The MUC1-C oncoprotein is aberrantly expressed in triple-negative breast cancer (TNBC) cells, induces the epithelial-mesenchymal transition (EMT) and promotes anti-cancer drug resistance. The present study demonstrates that targeting MUC1-C genetically and pharmacologically in TNBC cells results in the downregulation of BCL2A1 expression. The results show that MUC1-C activates the BCL2A1 gene by an NF-κB p65-mediated mechanism, linking this pathway with the induction of EMT. The MCL-1 anti-apoptotic protein is also of importance for the survival of TNBC cells and is an attractive target for drug development. We found that inhibiting MCL-1 with the highly specific MS1 peptide results in the activation of the MUC1-C→NF-κB→BCL2A1 pathway. In addition, selection of TNBC cells for resistance to ABT-737, which inhibits BCL-2, BCL-xL and BCL-W but not MCL-1 or BCL2A1, is associated with the upregulation of MUC1-C and BCL2A1 expression. Targeting MUC1-C in ABT-737-resistant TNBC cells suppresses BCL2A1 and induces death, which is of potential therapeutic importance. These findings indicate that MUC1-C is a target for the treatment of TNBCs unresponsive to agents that inhibit anti-apoptotic members of the BCL-2 family.
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Affiliation(s)
- Masayuki Hiraki
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA.,4Present Address: Department of Gastrointestinal Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871 Japan
| | - Takahiro Maeda
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Neha Mehrotra
- 2Center for Biomedical, Indian Institute of Technology, Delhi, India
| | - Caining Jin
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Maroof Alam
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Audrey Bouillez
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Tsuyoshi Hata
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Ashujit Tagde
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Amy Keating
- 3Departments of Biology and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA USA
| | | | - Harpal Singh
- 2Center for Biomedical, Indian Institute of Technology, Delhi, India
| | - Donald Kufe
- 1Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
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18
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Gornowicz A, Bielawska A, Szymanowski W, Gabryel-Porowska H, Czarnomysy R, Bielawski K. Mechanism of anticancer action of novel berenil complex of platinum(II) combined with anti-MUC1 in MCF-7 breast cancer cells. Oncol Lett 2017; 15:2340-2348. [PMID: 29434943 PMCID: PMC5776928 DOI: 10.3892/ol.2017.7623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/20/2017] [Indexed: 11/24/2022] Open
Abstract
Mucin 1 (MUC1) is a high molecular weight transmembrane glycoprotein, that is overexpressed in >90% of breast cancers. It serves a crucial role in anti-apoptosis and tumor progression. MUC1 interacts with proteins in the extracellular matrix, at the cell membrane, in the cytoplasm and in the nucleus. The aim of the present study was to investigate the mechanism of anticancer action induced by novel berenil complex of platinum(II) (Pt12) together with a monoclonal antibody against MUC1 in breast cancer MCF-7 cells. The effect of combined treatment on the concentration of selected markers of apoptosis including proapoptotic B-cell lymphoma 2 associated X protein (Bax), caspase-8, cytochrome c and caspase-9, as well as selected proteins involved in intracellular signal transduction pathways including p53, phosphoinositide 3-kinase and phosphorylated protein kinase B (p-Akt) were analyzed. The results of the present study demonstrated that combined treatment may be a promising strategy in anticancer treatment and represents an alternative to monotherapy. All compounds used alone (Pt12, cisplatin and the anti-MUC1 antibody) increased the concentration of proapoptotic Bax, cytochrome c and caspase-9 in comparison with control, thus suggesting that they activated the mitochondrial apoptotic pathway. Pt12 alone significantly increased the concentration of caspase-8, which is responsible for the initiation of the extrinsic apoptotic pathway. However, the strongest effect was observed following Pt12 (20 µM) treatment combined with the anti-MUC1 antibody (10 µg/ml). These two compounds together strongly induced apoptosis in MCF-7 breast cancer cells via the external and internal apoptotic pathways. It was also demonstrated that combined treatment based on Pt12 and the anti-MUC1 antibody significantly reduced p-Akt concentration.
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Affiliation(s)
- Agnieszka Gornowicz
- Department of Biotechnology, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Anna Bielawska
- Department of Biotechnology, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Wojciech Szymanowski
- Department of Biotechnology, Medical University of Bialystok, 15-222 Bialystok, Poland
| | | | - Robert Czarnomysy
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Krzysztof Bielawski
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, 15-222 Bialystok, Poland
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19
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Rajabi H, Kufe D. MUC1-C Oncoprotein Integrates a Program of EMT, Epigenetic Reprogramming and Immune Evasion in Human Carcinomas. Biochim Biophys Acta Rev Cancer 2017; 1868:117-122. [PMID: 28302417 DOI: 10.1016/j.bbcan.2017.03.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/17/2017] [Accepted: 03/11/2017] [Indexed: 01/08/2023]
Abstract
The MUC1 gene evolved in mammalian species to provide protection of epithelia. The transmembrane MUC1 C-terminal subunit (MUC1-C) signals stress to the interior of the epithelial cell and, when overexpressed as in most carcinomas, functions as an oncoprotein. MUC1-C induces the epithelial-mesenchymal transition (EMT) by activating the inflammatory NF-κB p65 pathway and, in turn, the EMT-transcriptional repressor ZEB1. Emerging evidence has indicated that MUC1-C drives a program integrating the induction of EMT with activation of stem cell traits, epigenetic reprogramming and immune evasion. This mini-review focuses on the potential importance of this MUC1-C program in cancer progression.
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Affiliation(s)
- Hasan Rajabi
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, United States
| | - Donald Kufe
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, United States.
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20
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Targeting MUC1-C inhibits the AKT-S6K1-elF4A pathway regulating TIGAR translation in colorectal cancer. Mol Cancer 2017; 16:33. [PMID: 28153010 PMCID: PMC5290603 DOI: 10.1186/s12943-017-0608-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 01/30/2017] [Indexed: 12/14/2022] Open
Abstract
Background Colorectal cancer is third most common malignancy and is the second most common cause of cancer-related death. The MUC1 heterodimeric protein is aberrantly overexpressed in colorectal cancer and has been linked to poor outcomes in this disease. Here, we investigate the effects of the MUC1-C subunit inhibitor (GO-203), which disrupts MUC1-C homo-oligomerization, on human colorectal cancer cells. Methods TIGAR mRNA level was determined using qRT-PCR. Western blotting was used to measure TIGAR protein level and AKT-mTOR-S6K1 pathways. Reactive oxygen species and apoptosis were measured by flow cytometry. Effect of MUC1-C peptide, GO-203 was studied on colorectal xenograft tumors. Immunohistochemistry was utilized for TIGAR staining. Results Treatment of MUC1-overexpressing SKCO-1 and Colo-205 colon cancer cells with GO-203 was associated with downregulation of the TP53-inducible glycolysis and apoptosis regulator (TIGAR) protein. TIGAR promotes the shunting of glycolytic intermediates into the pentose phosphate pathway and thus is of importance for maintaining redox balance. We show that GO-203-induced suppression of TIGAR is mediated by inhibition of AKT and the downstream mTOR pathway. The results also demonstrate that targeting MUC1-C blocks eIF4A cap-dependent translation of TIGAR. In concert with these results, GO-203-induced suppression of TIGAR was associated with decreases in GSH levels. GO-203 treatment also resulted in increases in reactive oxygen species (ROS) and loss of mitochondrial transmembrane potential. Consistent with these results, GO-203 inhibited the growth of colon cancer cells in vitro and as xenografts in nude mice. Inhibition of MUC1-C also downregulated TIGAR expression in xenograft tissues. Conclusions These findings indicate that MUC1-C is a potential target for the treatment of colorectal cancer. Colorectal cancer patients who overexpress MUC1-C may be candidates for treatment with the MUC1-C inhibitor alone or in combination therapy with other agents.
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21
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Shekhar A, Lin X, Liu FY, Zhang J, Mo H, Bastarache L, Denny JC, Cox NJ, Delmar M, Roden DM, Fishman GI, Park DS. Transcription factor ETV1 is essential for rapid conduction in the heart. J Clin Invest 2016; 126:4444-4459. [PMID: 27775552 DOI: 10.1172/jci87968] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 09/15/2016] [Indexed: 01/12/2023] Open
Abstract
Rapid impulse propagation in the heart is a defining property of pectinated atrial myocardium (PAM) and the ventricular conduction system (VCS) and is essential for maintaining normal cardiac rhythm and optimal cardiac output. Conduction defects in these tissues produce a disproportionate burden of arrhythmic disease and are major predictors of mortality in heart failure patients. Despite the clinical importance, little is known about the gene regulatory network that dictates the fast conduction phenotype. Here, we have used signal transduction and transcriptional profiling screens to identify a genetic pathway that converges on the NRG1-responsive transcription factor ETV1 as a critical regulator of fast conduction physiology for PAM and VCS cardiomyocytes. Etv1 was highly expressed in murine PAM and VCS cardiomyocytes, where it regulates expression of Nkx2-5, Gja5, and Scn5a, key cardiac genes required for rapid conduction. Mice deficient in Etv1 exhibited marked cardiac conduction defects coupled with developmental abnormalities of the VCS. Loss of Etv1 resulted in a complete disruption of the normal sodium current heterogeneity that exists between atrial, VCS, and ventricular myocytes. Lastly, a phenome-wide association study identified a link between ETV1 and bundle branch block and heart block in humans. Together, these results identify ETV1 as a critical factor in determining fast conduction physiology in the heart.
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22
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c- Src and its role in cystic fibrosis. Eur J Cell Biol 2016; 95:401-413. [DOI: 10.1016/j.ejcb.2016.08.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 08/08/2016] [Accepted: 08/10/2016] [Indexed: 12/15/2022] Open
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23
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Sousa AM, Grandgenett PM, David L, Almeida R, Hollingsworth MA, Santos-Silva F. Reflections on MUC1 glycoprotein: the hidden potential of isoforms in carcinogenesis. APMIS 2016; 124:913-924. [PMID: 27538373 DOI: 10.1111/apm.12587] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 07/03/2016] [Indexed: 12/13/2022]
Abstract
Mucin 1 (MUC1) has been described as the renaissance molecule due to the large set of functions it displays in both normal and neoplastic cells. This membrane-tethered glycoprotein is overexpressed and aberrantly glycosylated in most epithelial cancers, being involved in several processes related with malignant phenotype acquisition. With a highly polymorphic structure, both in the polypeptide and glycan counterparts, MUC1 variability has been associated with susceptibility to several diseases, including cancer. Biochemical features and biological functions have been characterized upon the full-length MUC1 protein, remaining to clarify the real impact on cell dynamics of the plethora of MUC1 isoforms. This review aims to encompass a detailed characterization of MUC1 role in carcinogenesis, highlighting recent findings in cell differentiation and uncovering new evidences of MUC1 isoforms involvement in malignant phenotype.
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Affiliation(s)
- Andreia M Sousa
- i3S-Institute of Research and Innovation in Health, University of Porto, Porto, Portugal. .,IPATIMUP-Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.
| | - Paul M Grandgenett
- Eppley Institute for Research in Cancer and Allied Disease, Omaha, NE, USA
| | - Leonor David
- i3S-Institute of Research and Innovation in Health, University of Porto, Porto, Portugal.,IPATIMUP-Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Raquel Almeida
- i3S-Institute of Research and Innovation in Health, University of Porto, Porto, Portugal.,IPATIMUP-Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Faculty of Medicine of the University of Porto, Porto, Portugal.,Department of Biology, Faculty of Sciences of the University of Porto, Porto, Portugal
| | | | - Filipe Santos-Silva
- i3S-Institute of Research and Innovation in Health, University of Porto, Porto, Portugal.,IPATIMUP-Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Faculty of Medicine of the University of Porto, Porto, Portugal
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24
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Abstract
Mucin1 (MUC1) is a transmembrane oncogenic protein that plays a central role in malignant transformation and disease evolution, including cell proliferation, survival, self-renewal, and metastatic invasion. MUC1 has been shown to interact with diverse effectors such as β-catenin, receptor tyrosine kinases, and c-Abl, which are of importance in the pathogenesis of various hematological malignancies. In myeloid leukemia, MUC1 has been shown to have an essential role in leukemia stem-cell function, the induction of reactive oxygen species (ROS), and the promotion of terminal myeloid differentiation. As such, MUC1 is an attractive therapeutic target in hematologic malignancies. Targeting MUC1 has been shown to be an effective approach for inducing cell death in tumor in in vivo and in vitro models. Furthermore, MUC1 inhibition is synergistic with other therapeutic agents in the treatment of hematologic disorders. This review will explore the role of MUC1 in hematological malignancies, and strategies for targeting this oncoprotein.
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Affiliation(s)
- Dina Stroopinsky
- a Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
| | - Donald Kufe
- b Dana Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
| | - David Avigan
- a Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
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25
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Saraswat D, Kumar R, Pande T, Edgerton M, Cullen PJ. Signalling mucin Msb2 Regulates adaptation to thermal stress in Candida albicans. Mol Microbiol 2016; 100:425-41. [PMID: 26749104 PMCID: PMC4955288 DOI: 10.1111/mmi.13326] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2016] [Indexed: 12/13/2022]
Abstract
Temperature is a potent inducer of fungal dimorphism. Multiple signalling pathways control the response to growth at high temperature, but the sensors that regulate these pathways are poorly defined. We show here that the signalling mucin Msb2 is a global regulator of temperature stress in the fungal pathogen Candida albicans. Msb2 was required for survival and hyphae formation at 42°C. The cytoplasmic signalling domain of Msb2 regulated temperature-dependent activation of the CEK mitogen activated proteins kinase (MAPK) pathway. The extracellular glycosylated domain of Msb2 (100-900 amino acid residues) had a new and unexpected role in regulating the protein kinase C (PKC) pathway. Msb2 also regulated temperature-dependent induction of genes encoding regulators and targets of the unfolded protein response (UPR), which is a protein quality control (QC) pathway in the endoplasmic reticulum that controls protein folding/degradation in response to high temperature and other stresses. The heat shock protein and cell wall component Ssa1 was also required for hyphae formation and survival at 42°C and regulated the CEK and PKC pathways.
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Affiliation(s)
- Darpan Saraswat
- Department of Oral Biology, University at Buffalo, Buffalo, NY, 14260-1300, USA
| | - Rohitashw Kumar
- Department of Oral Biology, University at Buffalo, Buffalo, NY, 14260-1300, USA
| | - Tanaya Pande
- Department of Biological Sciences, University at Buffalo, Buffalo, NY, 14260-1300, USA
| | - Mira Edgerton
- Department of Oral Biology, University at Buffalo, Buffalo, NY, 14260-1300, USA
| | - Paul J. Cullen
- Department of Biological Sciences, University at Buffalo, Buffalo, NY, 14260-1300, USA
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26
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Gingras J, Gawor M, Bernadzki KM, Grady RM, Hallock P, Glass DJ, Sanes JR, Proszynski TJ. Α-Dystrobrevin-1 recruits Grb2 and α-catulin to organize neurotransmitter receptors at the neuromuscular junction. J Cell Sci 2016; 129:898-911. [PMID: 26769899 DOI: 10.1242/jcs.181180] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 01/11/2016] [Indexed: 12/17/2022] Open
Abstract
Neuromuscular junctions (NMJs), the synapses made by motor neurons on muscle fibers, form during embryonic development but undergo substantial remodeling postnatally. Several lines of evidence suggest that α-dystrobrevin, a component of the dystrophin-associated glycoprotein complex (DGC), is a crucial regulator of the remodeling process and that tyrosine phosphorylation of one isoform, α-dystrobrevin-1, is required for its function at synapses. We identified a functionally important phosphorylation site on α-dystrobrevin-1, generated phosphorylation-specific antibodies to it and used them to demonstrate dramatic increases in phosphorylation during the remodeling period, as well as in nerve-dependent regulation in adults. We then identified proteins that bind to this site in a phosphorylation-dependent manner and others that bind to α-dystrobrevin-1 in a phosphorylation-independent manner. They include multiple members of the DGC, as well as α-catulin, liprin-α1, Usp9x, PI3K, Arhgef5 and Grb2. Finally, we show that two interactors, α-catulin (phosphorylation independent) and Grb2 (phosphorylation dependent) are localized to NMJs in vivo, and that they are required for proper organization of neurotransmitter receptors on myotubes.
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Affiliation(s)
- Jacinthe Gingras
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA 02138, USA
| | - Marta Gawor
- Laboratory of Synaptogenesis, Dept. of Cell Biology, Nencki Institute of Experimental Biology, Warsaw 02-093, Poland
| | - Krzysztof M Bernadzki
- Laboratory of Synaptogenesis, Dept. of Cell Biology, Nencki Institute of Experimental Biology, Warsaw 02-093, Poland
| | - R Mark Grady
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Peter Hallock
- Novartis Biomedical Institute, Cambridge, MA 02139, USA
| | - David J Glass
- Novartis Biomedical Institute, Cambridge, MA 02139, USA
| | - Joshua R Sanes
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA 02138, USA Department of Anatomy and Neurobiology, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Tomasz J Proszynski
- Laboratory of Synaptogenesis, Dept. of Cell Biology, Nencki Institute of Experimental Biology, Warsaw 02-093, Poland
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Scheving LA, Zhang X, Stevenson MC, Weintraub MA, Abbasi A, Clarke AM, Threadgill DW, Russell WE. Loss of hepatocyte ERBB3 but not EGFR impairs hepatocarcinogenesis. Am J Physiol Gastrointest Liver Physiol 2015; 309:G942-54. [PMID: 26492920 PMCID: PMC4683301 DOI: 10.1152/ajpgi.00089.2015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 10/18/2015] [Indexed: 01/31/2023]
Abstract
Epidermal growth factor receptor (EGFR) and ERBB3 have been implicated in hepatocellular carcinogenesis (HCC). However, it is not known whether altering the activity of either EGFR or ERBB3 affects HCC development. We now show that Egfr(Dsk5) mutant mice, which have a gain-of-function allele that increases basal EGFR kinase activity, develop spontaneous HCC by 10 mo of age. Their tumors show increased activation of EGFR, ERBB2, and ERBB3 as well as AKT and ERK1,2. Hepatocyte-specific models of EGFR and ERBB3 gene ablation were generated to evaluate how the loss of these genes affected tumor progression. Loss of either receptor tyrosine kinase did not alter liver development or regenerative liver growth following carbon tetrachloride injection. However, using a well-characterized model of HCC in which N-nitrosodiethylamine is injected into 14-day-old mice, we discovered that loss of hepatocellular ERBB3 but not EGFR, which occurred after tumor initiation, retarded liver tumor formation and cell proliferation. We found no evidence that this was due to increased apoptosis or diminished phosphatidylinositol-3-kinase activity in the ERBB3-null cells. However, the relative amount of phospho-STAT3 was diminished in tumors derived from these mice, suggesting that ERBB3 may promote HCC through STAT3 activation.
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Affiliation(s)
- Lawrence A. Scheving
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
| | - Xiuqi Zhang
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
| | - Mary C. Stevenson
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
| | - Michael A. Weintraub
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
| | - Annam Abbasi
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
| | - Andrea M. Clarke
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
| | - David W. Threadgill
- 6Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas; and ,7Department of Molecular and Cellular Medicine, Texas A&M University, College Station, Texas
| | - William E. Russell
- 1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee; ,5Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee;
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Rivalland G, Loveland B, Mitchell P. Update on Mucin-1 immunotherapy in cancer: a clinical perspective. Expert Opin Biol Ther 2015; 15:1773-87. [PMID: 26453294 DOI: 10.1517/14712598.2015.1088519] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Mucin 1 (MUC1) is particularly well suited as a cancer immunotherapy target due to the elevated protein expression and aberrant forms associated with malignancy. A variety of therapeutic strategies have been explored, including antibodies intended to induce cancer cell destruction, and vaccinations with peptides, tumor extracts, and gene expression systems. AREAS COVERED MUC1 immunotherapeutic strategies have included vaccination with peptide sequences, glycan molecules, viruses, and dendritic cells, monoclonal antibodies and monoclonal antibody conjugates. Here we review the relevant clinical trials in each field of immunotherapy with particular focus on large and recently published trials. EXPERT OPINION Long clinical experience in the trial setting has reduced concerns of immunotherapy associated toxicities and inappropriate immune responses, with the main limitation (common to many experimental approaches) being a lack of clinical efficacy. However, there have been sufficient treatment-associated responses to justify continued pursuit of MUC1 targeted immunotherapies. The focus now should be on application to the relevant cancers under appropriate circumstances and combination with the emerging non-specific immunotherapy approaches such as the PD-1 pathway inhibitors.
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Affiliation(s)
- Gareth Rivalland
- a 1 Austin Health, Olivia Newton-John Cancer and Wellness Centre , Studley Rd, Heidelberg VIC 3084, Australia
| | - Bruce Loveland
- b 2 Burnet Institute, Centre for Biomedical Research , Melbourne VIC 3004, Australia
| | - Paul Mitchell
- c 3 Austin Health, Level 4, Olivia Newton-John Cancer and Wellness Centre , Studley Rd, Heidelberg VIC 3084, Australia +613 94 96 57 63 ; +613 94 57 66 98 ;
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Yuan H, Wang J, Wang F, Zhang N, Li Q, Xie F, Chen T, Zhai R, Wang F, Guo Y, Ni W, Tai G. Mucin 1 gene silencing inhibits the growth of SMMC-7721 human hepatoma cells through Bax-mediated mitochondrial and caspase-8-mediated death receptor apoptotic pathways. Mol Med Rep 2015; 12:6782-8. [PMID: 26398332 PMCID: PMC4626135 DOI: 10.3892/mmr.2015.4323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 08/25/2015] [Indexed: 01/04/2023] Open
Abstract
Mucin 1 (MUC1) is an oncogene that has a crucial role in the pathogenesis and progression of the majority of epithelial malignant tumors. Our previous study demonstrated that MUC1 gene silencing inhibited the growth of SMMC-7721 cells in vitro and in vivo, however, whether this growth inhibition is associated with apoptotic cell death remains to be elucidated. In the present study, it was found that MUC1 gene silencing not only resulted in the inhibition of SMMC-7721 cell growth, determined using a clone formation assay in vitro and a tumor xenograft mouse model with an in vivo imaging system, but also induced apoptotic alterations in SMMC-7721 cells, determined using Hoechst 33342 staining, flow cytometry with an Annexin V-PE staining and a DNA ladder assay. Further investigation using western blotting revealed that cytochrome c was released from the mitochondria into the cytoplasm, and caspase-8 and caspase-9 were activated in MUC1 gene-silenced SMMC-7721 cells. The pro-apoptotic protein Bcl-2-associated X protein (Bax) and the tumor suppressor p53 were increased, while the anti-apoptotic protein B-cell lymphoma 2 was decreased in MUC1 gene-silenced cells. In addition, results from the co-immunoprecipitation experiments demonstrated that the MUC1 cytoplasmic tail can bind directly to Bax or caspase-8 and these interactions were reduced upon MUC1 gene silencing in SMMC-7721 cells. The above results indicate that MUC1 gene silencing induces growth inhibition in SMMC-7721 cells through Bax-mediated mitochondrial and caspase-8-mediated death receptor apoptotic pathways.
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Affiliation(s)
- Hongyan Yuan
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Juan Wang
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Fengli Wang
- Department of Clinical Laboratory, Dalian Municipal Central Hospital, Dalian, Liaoning 116033, P.R. China
| | - Nannan Zhang
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Qiongshu Li
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Fei Xie
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Tanxiu Chen
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ruiping Zhai
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Fang Wang
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yingying Guo
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Weihua Ni
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Guixiang Tai
- Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
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Raina D, Agarwal P, Lee J, Bharti A, McKnight CJ, Sharma P, Kharbanda S, Kufe D. Characterization of the MUC1-C Cytoplasmic Domain as a Cancer Target. PLoS One 2015; 10:e0135156. [PMID: 26267657 PMCID: PMC4534190 DOI: 10.1371/journal.pone.0135156] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/17/2015] [Indexed: 01/27/2023] Open
Abstract
Mucin 1 (MUC1) is a heterodimeric protein that is aberrantly expressed in diverse human carcinomas and certain hematologic malignancies. The oncogenic MUC1 transmembrane C-terminal subunit (MUC1-C) functions in part by transducing growth and survival signals from cell surface receptors. However, little is known about the structure of the MUC1-C cytoplasmic domain as a potential drug target. Using methods for structural predictions, our results indicate that a highly conserved CQCRRK sequence, which is adjacent to the cell membrane, forms a small pocket that exposes the two cysteine residues for forming disulfide bonds. By contrast, the remainder of the MUC1-C cytoplasmic domain has no apparent structure, consistent with an intrinsically disordered protein. Our studies thus focused on targeting the MUC1 CQCRRK region. The results show that L- and D-amino acid CQCRRK-containing peptides bind directly to the CQC motif. We further show that the D-amino acid peptide, designated GO-203, blocks homodimerization of the MUC1-C cytoplasmic domain in vitro and in transfected cells. Moreover, GO-203 binds directly to endogenous MUC1-C in breast and lung cancer cells. Colocalization studies further demonstrate that GO-203 predominantly binds to MUC1-C at the cell membrane. These findings support the further development of agents that target the MUC1-C cytoplasmic domain CQC motif and thereby MUC1-C function in cancer cells.
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Affiliation(s)
- Deepak Raina
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, United States of America
- Genus Oncology, Boston, MA, 02118, United States of America
| | | | - James Lee
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, United States of America
| | - Ajit Bharti
- Boston University School of Medicine, Department of Medicine, Boston, MA, 02118, United States of America
| | - C. James McKnight
- Boston University School of Medicine, Department of Physiology & Biophysics, Boston, MA, 02118, United States of America
| | | | - Surender Kharbanda
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, United States of America
- Genus Oncology, Boston, MA, 02118, United States of America
| | - Donald Kufe
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, United States of America
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Hagiyama M, Yoneshige A, Inoue T, Sato Y, Mimae T, Okada M, Ito A. The intracellular domain of cell adhesion molecule 1 is present in emphysematous lungs and induces lung epithelial cell apoptosis. J Biomed Sci 2015; 22:67. [PMID: 26259600 PMCID: PMC4531499 DOI: 10.1186/s12929-015-0173-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/30/2015] [Indexed: 12/20/2022] Open
Abstract
Background Pulmonary emphysema is characterized histologically by destruction of alveolar walls and enlargement of air spaces due to lung epithelial cell apoptosis. Cell adhesion molecule 1 (CADM1) is an immunoglobulin superfamily member expressed in lung epithelial cells. CADM1 generates a membrane-associated C-terminal fragment, αCTF, through A disintegrin- and metalloprotease-10-mediated ectodomain shedding, subsequently releasing the intracellular domain (ICD) through γ-secretase-mediated intramembrane shedding of αCTF. αCTF localizes to mitochondria and induces apoptosis in lung epithelial cells. αCTF contributes to the development and progression of emphysema as a consequence of increased CADM1 ectodomain shedding. The purpose of this study was to examine whether the ICD makes a similar contribution. Results The ICD was synthesized as a 51-amino acid peptide, and its mutant was synthesized by substituting seven amino acids and deleting two amino acids. These peptides were labeled with fluorescein isothiocyanate and were introduced into various cell lines. ICD peptide-derived fluorescence was well visualized in lung epithelial cells at the site of Mitotracker mitochondrial labeling, but was detected in locations other than mitochondria in other cell types. Mutant peptide-derived fluorescence was detected in locations other than mitochondria, even in lung epithelial cells. Terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assays revealed that transduction of the ICD peptide increased the proportion of apoptotic cells 2- to 5-fold in the lung epithelial cell lines, whereas the mutant peptide did not. Abundance of the ICD was below the Western blot detection limit in emphysematous (n = 4) and control (n = 4) human lungs. However, the ICD was detected only in emphysematous lungs when it was immunoprecipitated with anti-CADM1 antibody (4/4 vs. 0/4, P = 0.029). Conclusions As the abundance of ICD molecules was sparse but present, increased CADM1 shedding appeared to contribute to the development of emphysema by generating αCTF and the ICD in lung epithelial cells. Electronic supplementary material The online version of this article (doi:10.1186/s12929-015-0173-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
| | - Azusa Yoneshige
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
| | - Takao Inoue
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
| | - Yasufumi Sato
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
| | - Takahiro Mimae
- Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan.
| | - Morihito Okada
- Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan.
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
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Joshi S, Kumar S, Choudhury A, Ponnusamy MP, Batra SK. Altered Mucins (MUC) trafficking in benign and malignant conditions. Oncotarget 2015; 5:7272-84. [PMID: 25261375 PMCID: PMC4202122 DOI: 10.18632/oncotarget.2370] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Mucins are high molecular weight O-glycoproteins that are predominantly expressed at the apical surface of epithelial cells and have wide range of functions. The functional diversity is attributed to their structure that comprises of a peptide chain with unique domains and multiple carbohydrate moieties added during posttranslational modifications. Tumor cells aberrantly overexpress mucins, and thereby promote proliferation, differentiation, motility, invasion and metastasis. Along with their aberrant expression, accumulating evidence suggest the critical role of altered subcellular localization of mucins under pathological conditions due to altered endocytic processes. The mislocalization of mucins and their interactions result in change in the density and activity of important cell membrane proteins (like, receptor tyrosine kinases) to facilitate various signaling, which help cancer cells to proliferate, survive and progress to more aggressive phenotype. In this review article, we summarize studies on mucins trafficking and provide a perspective on its importance to pathological conditions and to answer critical questions including its use for therapeutic interventions.
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Affiliation(s)
- Suhasini Joshi
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, U.S.A
| | - Sushil Kumar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, U.S.A
| | | | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, U.S.A
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, U.S.A. Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, U.S.A
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Abstract
Knowledge of the molecular events that contribute to prostate cancer progression has created opportunities to develop novel therapy strategies. It is now well established that c-Src, a non-receptor tyrosine kinase, regulates a complex signaling network that drives the development of castrate-resistance and bone metastases, events that signal the lethal phenotype of advanced disease. Preclinical studies have established a role for c-Src and Src Family Kinases (SFKs) in proliferation, angiogenesis, invasion and bone metabolism, thus implicating Src signaling in both epithelial and stromal mechanisms of disease progression. A number of small molecule inhibitors of SFK now exist, many of which have demonstrated efficacy in preclinical models and several that have been tested in patients with metastatic castrate-resistant prostate cancer. These agents have demonstrated provocative clinic activity, particularly in modulating the bone microenvironment in a therapeutically favorable manner. Here, we review the discovery and basic biology of c-Src and further discuss the role of SFK inhibitors in the treatment of advanced prostate cancer.
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Abstract
MUC1 is a glycoprotein that is overexpressed in tumor cells. In normal cells it forms a protective layer against microbes and toxic chemicals, besides providing lubrication on ductal surfaces. Oversecretion of MUC1 provide cancer cells with invasiveness, metastasis, and resistance to death induced by reactive oxygen species. MUC1 is made up of 2 heterodimers, MUC1-N and MUC1-C. MUC1-N is heavily glycosylated at 5 regions of the variable N-tandem repeats. MUC1-C is divisible into extracellular, intracellular, and cytoplasmic domain (MUC1-C/CD). The extracellular domain serves as a docking site for epidermal growth factor receptors and other receptor kinases; the transmembrane domain serves to relay messages from extracellular to MUC1-C/CD. The MUC1-C/CD has 5 phosphorylating sites that on interacting with the SH2 domain of specific proteins can stimulate tumor growth. Therapies targeting MUC1 consists of monoclonal antibodies (MAb), vaccines, or small molecules (aptamers). MAb therapies are mainly aimed at MUC1-N with little success, however, new generation of MAb are being developed for MUC1-C. Vaccines (peptide, carbohydrate, glycopeptide, DNA, and dendritic cell) have been developed that recognizes the aberrant glycosylated region of the variable N-tandem repeats in MUC1-N, whereas new generation vaccines are aimed at the cytoplasmic region of MUC1-C. Aptamers (peptides that resemble DNA, RNA) have been used for blocking the dimerization of CQC region and the 5 phosphorylating region of MUC1-C. In addition, aptamers have been used as cytotoxic drug carriers. However, none of the therapies for MUC1 are currently in clinical application, as they need further refinement and evaluation.
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Nielsen TO, Borre M, Nexo E, Sorensen BS. Co-expression of HER3 and MUC1 is associated with a favourable prognosis in patients with bladder cancer. BJU Int 2015; 115:163-5. [PMID: 24467768 DOI: 10.1111/bju.12658] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To investigate the functional impact of the interaction of MUC1 with the epidermal growth factor receptors HER3 and HER4 in patients with bladder cancer. PATIENTS AND METHODS Using reverse transcription quantitative polymerase chain reaction, we examined MUC1 expression in 82 bladder cancer biopsies previously examined for the expression of HER3. RESULTS Patients expressing high MUC1 had a favourable survival when the expression of HER3 was also high compared with when the expression of HER3 was low (P = 0.004). When MUC1 expression was low, HER3 co-expression did not influence the prognostic value of MUC1 (P = 0.488). MUC1 expression had no correlation with survival, tumour stage or grade, or to the prognostic value of HER4. CONCLUSIONS A high MUC1 expression was associated with a favourable prognosis in patients with bladder cancer when the expression of HER3 was also high. This suggests an involvement of HER3 in MUC1 function in bladder cancer.
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Affiliation(s)
- Trine O Nielsen
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
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Mezquita B, Pineda E, Mezquita J, Mezquita P, Pau M, Codony-Servat J, Martínez-Balibrea E, Mora C, Maurel J, Mezquita C. LoVo colon cancer cells resistant to oxaliplatin overexpress c-MET and VEGFR-1 and respond to VEGF with dephosphorylation of c-MET. Mol Carcinog 2015; 55:411-9. [DOI: 10.1002/mc.22289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 12/05/2014] [Accepted: 12/18/2014] [Indexed: 12/17/2022]
Affiliation(s)
- Belén Mezquita
- Departament de Ciències Fisiològiques I. Laboratori de Genètica Molecular, IDIBAPS, Facultat de Medicina; Universitat de Barcelona; Barcelona Spain
- Departament de Ciències Bàsiques; Universitat Internacional de Catalunya; Barcelona Spain
| | - Estela Pineda
- Medical Oncology Department; Hospital Clínic; University of Barcelona; Barcelona Spain
| | - Jovita Mezquita
- Departament de Ciències Fisiològiques I. Laboratori de Genètica Molecular, IDIBAPS, Facultat de Medicina; Universitat de Barcelona; Barcelona Spain
| | - Pau Mezquita
- Departament de Ciències Bàsiques; Universitat Internacional de Catalunya; Barcelona Spain
| | - Montserrat Pau
- Departament de Ciències Fisiològiques I. Laboratori de Genètica Molecular, IDIBAPS, Facultat de Medicina; Universitat de Barcelona; Barcelona Spain
| | - Jordi Codony-Servat
- Medical Oncology Department; Hospital Clínic; University of Barcelona; Barcelona Spain
| | - Eva Martínez-Balibrea
- Medical Oncology Service; Institut Català d'Oncologia-Hospital Germans Trias i Pujol; Badalona Spain
| | - Conchi Mora
- Departament de Medicina Experimental; Universitat de Lleida, Alcalde Rovira Roure; Lleida Spain
| | - Joan Maurel
- Medical Oncology Department; Hospital Clínic; University of Barcelona; Barcelona Spain
| | - Cristóbal Mezquita
- Departament de Ciències Fisiològiques I. Laboratori de Genètica Molecular, IDIBAPS, Facultat de Medicina; Universitat de Barcelona; Barcelona Spain
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Wang X, Li S. Protein mislocalization: mechanisms, functions and clinical applications in cancer. BIOCHIMICA ET BIOPHYSICA ACTA 2014; 1846:13-25. [PMID: 24709009 PMCID: PMC4141035 DOI: 10.1016/j.bbcan.2014.03.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 02/20/2014] [Accepted: 03/27/2014] [Indexed: 12/21/2022]
Abstract
The changes from normal cells to cancer cells are primarily regulated by genome instability, which foster hallmark functions of cancer through multiple mechanisms including protein mislocalization. Mislocalization of these proteins, including oncoproteins, tumor suppressors, and other cancer-related proteins, can interfere with normal cellular function and cooperatively drive tumor development and metastasis. This review describes the cancer-related effects of protein subcellular mislocalization, the related mislocalization mechanisms, and the potential application of this knowledge to cancer diagnosis, prognosis, and therapy.
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Affiliation(s)
- Xiaohong Wang
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA
| | - Shulin Li
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA.
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Galectin-3 binds to MUC1-N-terminal domain and triggers recruitment of β-catenin in MUC1-expressing mouse 3T3 cells. Biochim Biophys Acta Gen Subj 2014; 1840:1790-7. [PMID: 24561267 DOI: 10.1016/j.bbagen.2014.02.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Revised: 02/03/2014] [Accepted: 02/07/2014] [Indexed: 11/22/2022]
Abstract
BACKGROUND Galectin-3 is expressed in a variety of tumors and its expression level is related with tumor progression. Aberrant expression of MUC1 in various tumors is also associated with a poor prognosis. It has been reported that MUC1 is a natural ligand of galectin-3. METHODS A stable MUC1 transfectant was produced by introducing MUC1 cDNA into mouse 3T3 fibroblasts (MUC1/3T3 cells). MUC1 was prepared from MUC1/3T3 cells; MUC1-N-terminal domain (MUC1-ND) and -C-terminal domain (MUC1-CD) were separated by CsCl ultracentrifugation, and then the galectin-3-binding domain was determined by co-immuniprecipitation assay. After ligation of galectin-3 to 3T3/MUC1 cells, MUC1-CD was immunoprecipitated from the cell lysate. The immunoprecipitate was subjected to SDS-PAGE and Western blotting, followed by detection of co-immunoprecipitated β-catenin. RESULTS Galectin-3 binds to the N-terminal domain of MUC1 but not to the C-terminal one. Galectin-3 present on the cell surface increased with the expression of MUC1 and is colocalized with MUC1. It should be noted that β-catenin was detected in the immunoprecipitate with anti-MUC1-CD Ab from a lysate of galectin-3-treated 3T3/MUC1 cells. CONCLUSIONS Galectin-3 binds to MUC1-ND and triggers MUC1-mediated signaling in 3T3/MUC1 cells, leading to recruitment of β-catenin to MUC1-CD. GENERAL SIGNIFICANCE This signaling may be another MUC1-mediated pathway and function in parallel with a growth factor-dependent MUC1-mediated pathway.
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Mehla K, Singh PK. MUC1: a novel metabolic master regulator. Biochim Biophys Acta Rev Cancer 2014; 1845:126-35. [PMID: 24418575 DOI: 10.1016/j.bbcan.2014.01.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 12/28/2013] [Accepted: 01/03/2014] [Indexed: 12/14/2022]
Abstract
MUC1, a type I transmembrane protein, is significantly overexpressed and aberrantly glycosylated in tumors of epithelial origin. By virtue of its aberrant signaling due to loss of apical-basal polarity in cancer, MUC1 regulates the metabolite flux at multiple levels. Serving as a transcriptional co-activator, MUC1 directly regulates expression of metabolic genes. By regulating receptor tyrosine kinase signaling, MUC1 facilitates production of biosynthetic intermediates required for cell growth. Also, via direct interactions, MUC1 modulates the activity/stability of enzymes and transcription factors that directly regulate metabolic functions. Additionally, by modulation of autophagy, levels of reactive oxygen species, and metabolite flux, MUC1 facilitates cancer cell survival under hypoxic and nutrient-deprived conditions. This article provides a comprehensive review of recent literature on novel metabolic functions of MUC1.
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Affiliation(s)
- Kamiya Mehla
- The Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Pankaj K Singh
- The Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Genetic Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Usefulness of traditional serum biomarkers for management of breast cancer patients. BIOMED RESEARCH INTERNATIONAL 2013; 2013:685641. [PMID: 24350285 PMCID: PMC3856124 DOI: 10.1155/2013/685641] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 09/06/2013] [Accepted: 09/09/2013] [Indexed: 12/30/2022]
Abstract
The measurement of serum tumor markers levels in breast cancer (BC) patients is an economic and noninvasive diagnostic assay frequently requested by clinical oncologists to get information about the presence or absence of disease as well as its evolution. Despite their wide use in clinical practice, there is still an intense debate between scientific organizations about the real usefulness for patient monitoring during followup as well as response to therapy evaluation in case of advanced BC. In this review, we want to highlight the current recommendations published by scientific organizations about the use of “established” BC serum markers (CEA, TPA, TPS, CIFRA-21, CA15-3, and s-HER2) in clinical oncology practice. Moreover, we will focus on recent papers evidencing the usefulness of tumor markers levels measurement as a guide for the prescription and diagnostic integration of molecular imaging exams such as those performed by hybrid 18-fluorofeoxyglucose-positron emission tomography with integrated computed tomography. This technology is nowadays able to detect early cancer lesions undetectable by conventional morphological imaging investigation and most likely responsible for increasing of serum tumor markers levels.
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Mimae T, Hagiyama M, Inoue T, Yoneshige A, Kato T, Okada M, Murakami Y, Ito A. Increased ectodomain shedding of lung epithelial cell adhesion molecule 1 as a cause of increased alveolar cell apoptosis in emphysema. Thorax 2013; 69:223-31. [PMID: 24092566 PMCID: PMC3933066 DOI: 10.1136/thoraxjnl-2013-203867] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Rationale Alveolar epithelial cell apoptosis and protease/antiprotease imbalance based proteolysis play central roles in the pathogenesis of pulmonary emphysema but molecular mechanisms underlying these two events are not yet clearly understood. Cell adhesion molecule 1 (CADM1) is a lung epithelial cell adhesion molecule in the immunoglobulin superfamily. It generates two membrane associated C terminal fragments (CTFs), αCTF and βCTF, through protease mediated ectodomain shedding. Objective To explore the hypothesis that more CADM1-CTFs are generated in emphysematous lungs through enhanced ectodomain shedding, and cause increased apoptosis of alveolar epithelial cells. Methods and results Western blot analyses revealed that CADM1-CTFs increased in human emphysematous lungs in association with increased ectodomain shedding. Increased apoptosis of alveolar epithelial cells in emphysematous lungs was confirmed by terminal nucleotide nick end labelling (TUNEL) assays. NCI-H441 lung epithelial cells expressing mature CADM1 but not CTFs were induced to express αCTF both endogenously (by shedding inducers phorbol ester and trypsin) and exogenously (by transfection). Cell fractionation, immunofluorescence, mitochondrial membrane potentiometric JC-1 dye labelling and TUNEL assays revealed that CADM1-αCTF was localised to mitochondria where it decreased mitochondrial membrane potential and increased cell apoptosis. A mutation in the intracytoplasmic domain abrogated all three abilities of αCTF. Conclusions CADM1 ectodomain shedding appeared to cause alveolar cell apoptosis in emphysematous lungs by producing αCTF that accumulated in mitochondria. These data link proteolysis to apoptosis, which are two landmark events in emphysema.
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Affiliation(s)
- Takahiro Mimae
- Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Graduate School of Biomedical Sciences, Hiroshima University, , Hiroshima, Japan
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Kharbanda A, Rajabi H, Jin C, Raina D, Kufe D. Oncogenic MUC1-C promotes tamoxifen resistance in human breast cancer. Mol Cancer Res 2013; 11:714-23. [PMID: 23538857 DOI: 10.1158/1541-7786.mcr-12-0668] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Tamoxifen resistance of estrogen receptor-positive (ER+) breast cancer cells has been linked in part to activation of receptor tyrosine kinases, such as HER2, and the PI3K-AKT pathway. Mucin 1 (MUC1) is aberrantly overexpressed in about 90% of human breast cancers, and the oncogenic MUC1-C subunit is associated with ERα. The present studies using HER2 overexpressing BT-474 breast cancer cells, which are constitutively resistant to tamoxifen, demonstrate that silencing MUC1-C is associated with (i) downregulation of p-HER2 and (ii) sensitivity to tamoxifen-induced growth inhibition and loss of clonogenic survival. In contrast, overexpression of MUC1-C in tamoxifen-sensitive MCF-7 breast cancer cells resulted in upregulation of p-AKT and tamoxifen resistance. We show that MUC1-C forms complexes with ERα on the estrogen-responsive promoter of Rab31 and that MUC1-C blocks tamoxifen-induced decreases in ERα occupancy. MUC1-C also attenuated tamoxifen-induced decreases in (i) recruitment of the coactivator CREB binding protein, (ii) Rab31 promoter activation, and (iii) Rab31 mRNA and protein levels. The importance of MUC1-C is further supported by the demonstration that targeting MUC1-C with the cell-penetrating peptide inhibitor, GO-203, sensitized tamoxifen-resistant cells to tamoxifen treatment. Moreover, we show that targeting MUC1-C in combination with tamoxifen is highly synergistic in the treatment of tamoxifen-resistant breast cancer cells. Combined, these findings indicate that MUC1-C contributes to tamoxifen resistance.
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Affiliation(s)
- Akriti Kharbanda
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
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Lillehoj EP, Kato K, Lu W, Kim KC. Cellular and molecular biology of airway mucins. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2013; 303:139-202. [PMID: 23445810 PMCID: PMC5593132 DOI: 10.1016/b978-0-12-407697-6.00004-0] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Airway mucus constitutes a thin layer of airway surface liquid with component macromolecules that covers the luminal surface of the respiratory tract. The major function of mucus is to protect the lungs through mucociliary clearance of inhaled foreign particles and noxious chemicals. Mucus is comprised of water, ions, mucin glycoproteins, and a variety of other macromolecules, some of which possess anti-microbial, anti-protease, and anti-oxidant activities. Mucins comprise the major protein component of mucus and exist as secreted and cell-associated glycoproteins. Secreted, gel-forming mucins are mainly responsible for the viscoelastic property of mucus, which is crucial for effective mucociliary clearance. Cell-associated mucins shield the epithelial surface from pathogens through their extracellular domains and regulate intracellular signaling through their cytoplasmic regions. However, neither the exact structures of mucin glycoproteins, nor the manner through which their expression is regulated, are completely understood. This chapter reviews what is currently known about the cellular and molecular properties of airway mucins.
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Affiliation(s)
- Erik P. Lillehoj
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Kosuke Kato
- Center for Inflammation, Translational and Clinical Lung Research and Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Wenju Lu
- Guangzhou Institute of Respiratory Diseases, State Key Laboratory of Respiratory Diseases, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, PR China
| | - Kwang C. Kim
- Center for Inflammation, Translational and Clinical Lung Research and Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA
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Horm TM, Bitler BG, Broka DM, Louderbough JM, Schroeder JA. MUC1 drives c-Met-dependent migration and scattering. Mol Cancer Res 2012. [PMID: 23193156 DOI: 10.1158/1541-7786.mcr-12-0296] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The transmembrane mucin MUC1 is overexpressed in most ductal carcinomas, and its overexpression is frequently associated with metastatic progression. MUC1 can drive tumor initiation and progression via interactions with many oncogenic partners, including β-catenin, the EGF receptor (EGFR) and Src. The decoy peptide protein transduction domain MUC1 inhibitory peptide (PMIP) has been shown to inhibit the tumor promoting activities of MUC1 in breast and lung cancer, including cell growth and invasion, and its usage suppresses metastatic progression in mouse models of breast cancer. To further characterize the reduced metastasis observed upon PMIP treatment, we conducted motility assays and observed that PMIP inhibits cell motility of breast cancer cells. To determine the mechanism by which PMIP inhibits motility, we evaluated changes in global gene transcription upon PMIP treatment, and identified a number of genes with altered expression in response to PMIP. Among these genes is the metastatic mediator, c-Met, a transmembrane tyrosine kinase that can promote cell scattering, migration, and invasion. To further investigate the role of c-Met in MUC1-dependent metastatic events, we evaluated the effects of MUC1 expression and EGFR activation on breast cancer cell scattering, branching, and migration. We found that MUC1 strongly promoted all of these events and this effect was further amplified by EGF treatment. Importantly, the effect of MUC1 and EGF on these phenotypes was dependent upon c-Met activity. Overall, these results indicate that PMIP can block the expression of a key metastatic mediator, further advancing its potential use as a clinical therapeutic.
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Affiliation(s)
- Teresa M Horm
- Department of Molecular and Cellular Biology, Arizona Cancer Center, University of Arizona, Tucson, AZ 85724, USA
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Uchida Y, Raina D, Kharbanda S, Kufe D. Inhibition of the MUC1-C oncoprotein is synergistic with cytotoxic agents in the treatment of breast cancer cells. Cancer Biol Ther 2012; 14:127-34. [PMID: 23114713 DOI: 10.4161/cbt.22634] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Mucin 1 (MUC1) is a heterodimeric glycoprotein that is aberrantly overexpressed in most human breast cancers. The oncogenic MUC1-C subunit promotes survival and blocks the apoptotic response to genotoxic anticancer agents. In the present studies, human MCF-7 and ZR-75-1 breast cancer cells were treated with the MUC1-C inhibitor, GO-203, a cell-penetrating peptide that blocks MUC1-C homodimerization and thereby its oncogenic function. Treatment with GO-203 was found to promote the apoptotic response of MCF-7 and ZR-75-1 cells to the therapeutic drugs taxol and doxorubicin (DOX). This effect was (1) attenuated by a pan-caspase inhibitor, and (2) mediated, at least in part, by activation of the effector caspase-7 and cleavage of the downstream substrate PARP. Further analysis of the interaction between GO-203 and taxol using isobolograms, which evaluate the nature of the interaction of two drugs, demonstrated that the combination is highly synergistic. These results were supported by combination index (CI) analysis with values of less than 1. GO-203 was also highly synergistic with DOX in studies of both MCF-7 and ZR-75-1 breast cancer cells. These findings indicate that blocking MUC1-C function could be effective in combination with taxol and DOX for the treatment of breast cancer.
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Affiliation(s)
- Yasumitsu Uchida
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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Abstract
The current status of peptides that target the mitochondria in the context of cancer is the focus of this review. Chemotherapy and radiotherapy used to kill tumor cells are principally mediated by the process of apoptosis that is governed by the mitochondria. The failure of anticancer therapy often resides at the level of the mitochondria. Therefore, the mitochondrion is a key pharmacological target in cancer due to many of the differences that arise between malignant and healthy cells at the level of this ubiquitous organelle. Additionally, targeting the characteristics of malignant mitochondira often rely on disruption of protein--protein interactions that are not generally amenable to small molecules. We discuss anticancer peptides that intersect with pathological changes in the mitochondrion.
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Banerjee S, Mujumdar N, Dudeja V, Mackenzie T, Krosch TK, Sangwan V, Vickers SM, Saluja AK. MUC1c regulates cell survival in pancreatic cancer by preventing lysosomal permeabilization. PLoS One 2012; 7:e43020. [PMID: 22912777 PMCID: PMC3418232 DOI: 10.1371/journal.pone.0043020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 07/16/2012] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND MUC1 is a type I transmembrane glycoprotein aberrantly overexpressed in various cancer cells including pancreatic cancer. The cytosolic end of MUC1 (MUC1-c) is extensively involved in a number of signaling pathways. MUC1-c is reported to inhibit apoptosis in a number of cancer cells, but the mechanism of inhibition is unclear. METHOD Expression of MUC1-c was studied in the pancreatic cancer cell line MIAPaCa-2 at the RNA level by using qRTPCR and at the protein level by Western blotting. MUC1-c expression was inhibited either by siRNA or by a specific peptide inhibitor, GO-201. Effect of MUC1-c inhibition on viability and proliferation and lysosomal permeabilization were studied. Association of MUC1-c with HSP70 was detected by co-immunoprecipitation of MUC1-c and HSP70. Localization of MUC1-c in cellular organelles was monitored by immunofluorescence and with immuno- blotting by MUC1-c antibody after subcellular fractionation. RESULTS Inhibition of MUC1-c by an inhibitor (GO-201) or siRNA resulted in reduced viability and reduced proliferation of pancreatic cancer cells. Furthermore, GO-201, the peptide inhibitor of MUC1-c, was effective in reducing tumor burden in pancreatic cancer mouse model. MUC1-c was also found to be associated with HSP70 in the cytosol, although a significant amount of MUC1 was also seen to be present in the lysosomes. Inhibition of MUC1 expression or activity showed an enhanced Cathepsin B activity in the cytosol, indicating lysosomal permeabilization. Therefore this study indicates that MUC1-c interacted with HSP70 in the cytosol of pancreatic cancer cells and localized to the lysosomes in these cells. Further, our results showed that MUC1-c protects pancreatic cancer cells from cell death by stabilizing lysosomes and preventing release of Cathepsin B in the cytosol.
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Affiliation(s)
- Sulagna Banerjee
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Nameeta Mujumdar
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Vikas Dudeja
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Tiffany Mackenzie
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
- Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Tara K. Krosch
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Veena Sangwan
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Selwyn M. Vickers
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
- Masonic Cancer Centre, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Ashok K. Saluja
- Division of Basic and Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
- Masonic Cancer Centre, University of Minnesota, Minneapolis, Minnesota, United States of America
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Kufe DW. MUC1-C oncoprotein as a target in breast cancer: activation of signaling pathways and therapeutic approaches. Oncogene 2012; 32:1073-81. [PMID: 22580612 DOI: 10.1038/onc.2012.158] [Citation(s) in RCA: 304] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mucin 1 (MUC1) is a heterodimeric protein formed by two subunits that is aberrantly overexpressed in human breast cancer and other cancers. Historically, much of the early work on MUC1 focused on the shed mucin subunit. However, more recent studies have been directed at the transmembrane MUC1-C-terminal subunit (MUC1-C) that functions as an oncoprotein. MUC1-C interacts with EGFR (epidermal growth factor receptor), ErbB2 and other receptor tyrosine kinases at the cell membrane and contributes to activation of the PI3KAKT and mitogen-activated protein kinase kinase (MEK)extracellular signal-regulated kinase (ERK) pathways. MUC1-C also localizes to the nucleus where it activates the Wnt/β-catenin, signal transducer and activator of transcription (STAT) and NF (nuclear factor)-κB RelA pathways. These findings and the demonstration that MUC1-C is a druggable target have provided the experimental basis for designing agents that block MUC1-C function. Notably, inhibitors of the MUC1-C subunit have been developed that directly block its oncogenic function and induce death of breast cancer cells in vitro and in xenograft models. On the basis of these findings, a first-in-class MUC1-C inhibitor has entered phase I evaluation as a potential agent for the treatment of patients with breast cancers who express this oncoprotein.
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Affiliation(s)
- D W Kufe
- Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
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EGFR-mediated carcinoma cell metastasis mediated by integrin αvβ5 depends on activation of c-Src and cleavage of MUC1. PLoS One 2012; 7:e36753. [PMID: 22586492 PMCID: PMC3346745 DOI: 10.1371/journal.pone.0036753] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 04/12/2012] [Indexed: 12/12/2022] Open
Abstract
Receptor tyrosine kinases and integrins play an essential role in tumor cell invasion and metastasis. We previously showed that EGF and other growth factors induce human carcinoma cell invasion and metastasis mediated by integrin αvβ5 that is prevented by Src blockade [1]. MUC1, a transmembrane glycoprotein, is expressed in most epithelial tumors as a heterodimer consisting of an extracellular and a transmembrane subunit. The MUC1 cytoplasmic domain of the transmembrane subunit (MUC1.CD) translocates to the nucleus where it promotes the transcription of a metastatic gene signature associated with epithelial to mesenchymal transition. Here, we demonstrate a requirement for MUC1 in carcinoma cell metastasis dependent on EGFR and Src without affecting primary tumor growth. EGF stimulates Src-dependent MUC1 cleavage and nuclear localization leading to the expression of genes linked to metastasis. Moreover, expression of MUC1.CD results in its nuclear localization and is sufficient for transcription of the metastatic gene signature and tumor cell metastasis. These results demonstrate that EGFR and Src activity contribute to carcinoma cell invasion and metastasis mediated by integrin αvβ5 in part by promoting proteolytic cleavage of MUC1 and highlight the ability of MUC1.CD to promote metastasis in a context-dependent manner. Our findings may have implications for the use and future design of targeted therapies in cancers known to express EGFR, Src, or MUC1.
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