1
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Ahuja S, Zaheer S. Multifaceted TGF-β signaling, a master regulator: From bench-to-bedside, intricacies, and complexities. Cell Biol Int 2024; 48:87-127. [PMID: 37859532 DOI: 10.1002/cbin.12097] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/08/2023] [Accepted: 10/02/2023] [Indexed: 10/21/2023]
Abstract
Physiological embryogenesis and adult tissue homeostasis are regulated by transforming growth factor-β (TGF-β), an evolutionarily conserved family of secreted polypeptide factors, acting in an autocrine and paracrine manner. The role of TGF-β in inflammation, fibrosis, and cancer is complex and sometimes even contradictory, exhibiting either inhibitory or promoting effects depending on the stage of the disease. Under pathological conditions, especially fibrosis and cancer, overexpressed TGF-β causes extracellular matrix deposition, epithelial-mesenchymal transition, cancer-associated fibroblast formation, and/or angiogenesis. In this review article, we have tried to dive deep into the mechanism of action of TGF-β in inflammation, fibrosis, and carcinogenesis. As TGF-β and its downstream signaling mechanism are implicated in fibrosis and carcinogenesis blocking this signaling mechanism appears to be a promising avenue. However, targeting TGF-β carries substantial risk as this pathway is implicated in multiple homeostatic processes and is also known to have tumor-suppressor functions. There is a need for careful dosing of TGF-β drugs for therapeutic use and patient selection.
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Affiliation(s)
- Sana Ahuja
- Department of Pathology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Sufian Zaheer
- Department of Pathology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
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2
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Boudreault J, Wang N, Ghozlan M, Lebrun JJ. Transforming Growth Factor-β/Smad Signaling Inhibits Melanoma Cancer Stem Cell Self-Renewal, Tumor Formation and Metastasis. Cancers (Basel) 2024; 16:224. [PMID: 38201651 PMCID: PMC10778361 DOI: 10.3390/cancers16010224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/20/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
The secreted protein transforming growth factor-beta (TGFβ) plays essential roles, ranging from cell growth regulation and cell differentiation in both normal and cancer cells. In melanoma, TGFβ acts as a potent tumor suppressor in melanoma by blocking cell cycle progression and inducing apoptosis. In the present study, we found TGFβ to regulate cancer stemness in melanoma through the Smad signaling pathway. We discovered that TGFβ/Smad signaling inhibits melanosphere formation in multiple melanoma cell lines and reduces expression of the CD133+ cancer stem cell subpopulation in a Smad3-dependent manner. Using preclinical models of melanoma, we further showed that preventing Smad3/4 signaling, by means of CRISPR knockouts, promoted both tumorigenesis and lung metastasis in vivo. Collectively, our results define new functions for the TGFβ/Smad signaling axis in melanoma stem-cell maintenance and open avenues for new therapeutic approaches to this disease.
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Affiliation(s)
| | | | | | - Jean-Jacques Lebrun
- Cancer Research Program, Department of Medicine, Research Institute of McGill University Health Center, Montreal, QU H4A 3J1, Canada; (J.B.); (N.W.); (M.G.)
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3
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Nuñez-Rios JD, Ulrich H, Díaz-Muñoz M, Lameu C, Vázquez-Cuevas FG. Purinergic system in cancer stem cells. Purinergic Signal 2023:10.1007/s11302-023-09976-5. [PMID: 37966629 DOI: 10.1007/s11302-023-09976-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 10/25/2023] [Indexed: 11/16/2023] Open
Abstract
Accumulating evidence supports the idea that cancer stem cells (CSCs) are those with the capacity to initiate tumors, generate phenotypical diversity, sustain growth, confer drug resistance, and orchestrate the spread of tumor cells. It is still controversial whether CSCs originate from normal stem cells residing in the tissue or cancer cells from the tumor bulk that have dedifferentiated to acquire stem-like characteristics. Although CSCs have been pointed out as key drivers in cancer, knowledge regarding their physiology is still blurry; thus, research focusing on CSCs is essential to designing novel and more effective therapeutics. The purinergic system has emerged as an important autocrine-paracrine messenger system with a prominent role at multiple levels of the tumor microenvironment, where it regulates cellular aspects of the tumors themselves and the stromal and immune systems. Recent findings have shown that purinergic signaling also participates in regulating the CSC phenotype. Here, we discuss updated information regarding CSCs in the purinergic system and present evidence supporting the idea that elements of the purinergic system expressed by this subpopulation of the tumor represent attractive pharmacological targets for proposing innovative anti-cancer therapies.
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Affiliation(s)
- J D Nuñez-Rios
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Boulevard Juriquilla #3001, Juriquilla Querétaro, Querétaro, CP 76230, México
| | - H Ulrich
- Department of Biochemistry, Chemistry Institute, University of São Paulo (USP), São Paulo, Brazil
| | - M Díaz-Muñoz
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Boulevard Juriquilla #3001, Juriquilla Querétaro, Querétaro, CP 76230, México
| | - C Lameu
- Department of Biochemistry, Chemistry Institute, University of São Paulo (USP), São Paulo, Brazil
| | - F G Vázquez-Cuevas
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Boulevard Juriquilla #3001, Juriquilla Querétaro, Querétaro, CP 76230, México.
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4
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Borlongan MC, Wang H. Profiling and targeting cancer stem cell signaling pathways for cancer therapeutics. Front Cell Dev Biol 2023; 11:1125174. [PMID: 37305676 PMCID: PMC10247984 DOI: 10.3389/fcell.2023.1125174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 05/15/2023] [Indexed: 06/13/2023] Open
Abstract
Tumorigenic cancer stem cells (CSCs) represent a subpopulation of cells within the tumor that express genetic and phenotypic profiles and signaling pathways distinct from the other tumor cells. CSCs have eluded many conventional anti-oncogenic treatments, resulting in metastases and relapses of cancers. Effectively targeting CSCs' unique self-renewal and differentiation properties would be a breakthrough in cancer therapy. A better characterization of the CSCs' unique signaling mechanisms will improve our understanding of the pathology and treatment of cancer. In this paper, we will discuss CSC origin, followed by an in-depth review of CSC-associated signaling pathways. Particular emphasis is given on CSC signaling pathways' ligand-receptor engagement, upstream and downstream mechanisms, and associated genes, and molecules. Signaling pathways associated with regulation of CSC development stand as potential targets of CSC therapy, which include Wnt, TGFβ (transforming growth factor-β)/SMAD, Notch, JAK-STAT (Janus kinase-signal transducers and activators of transcription), Hedgehog (Hh), and vascular endothelial growth factor (VEGF). Lastly, we will also discuss milestone discoveries in CSC-based therapies, including pre-clinical and clinical studies featuring novel CSC signaling pathway cancer therapeutics. This review aims at generating innovative views on CSCs toward a better understanding of cancer pathology and treatment.
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Affiliation(s)
- Mia C. Borlongan
- Master Program of Pharmaceutical Science College of Graduate Studies, Elk Grove, CA, United States
| | - Hongbin Wang
- Master Program of Pharmaceutical Science College of Graduate Studies, Elk Grove, CA, United States
- Department of Pharmaceutical and Biomedical Sciences College of Pharmacy, Elk Grove, CA, United States
- Department of Basic Science College of Medicine, California Northstate University, Elk Grove, CA, United States
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5
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Mallini P, Chen M, Mahkamova K, Lennard TWJ, Pan Y, Wei D, Stemke-Hale K, Kirby JA, Lash GE, Meeson A. Hypoxia-Driven TGFβ Modulation of Side Population Cells in Breast Cancer: The Potential Role of ERα. Cancers (Basel) 2023; 15:1108. [PMID: 36831452 PMCID: PMC9954173 DOI: 10.3390/cancers15041108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/31/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is known to be important in regulating the behaviour of cancer cells enabling them to acquire stem cell characteristics or by enhancing the stem cell characteristics of cancer stem cells, resulting in these cells becoming more migratory and invasive. EMT can be driven by a number of mechanisms, including the TGF-β1 signalling pathway and/or by hypoxia. However, these drivers of EMT differ in their actions in regulating side population (SP) cell behaviour, even within SPs isolated from the same tissue. In this study we examined CoCl2 exposure and TGF-β driven EMT on SP cells of the MDA-MB-231 and MCF7 breast cancer cell lines. Both TGF-β1 and CoCl2 treatment led to the depletion of MDA-MB-231 SP. Whilst TGF-β1 treatment significantly reduced the MCF7 SP cells, CoCl2 exposure led to a significant increase. Single cell analysis revealed that CoCl2 exposure of MCF7 SP leads to increased expression of ABCG2 and HES1, both associated with multi-drug resistance. We also examined the mammosphere forming efficiency in response to CoCl2 exposure in these cell lines, and saw the same effect as seen with the SP cells. We suggest that these contrasting effects are due to ERα expression and the inversely correlated expression of TGFB-RII, which is almost absent in the MCF7 cells. Understanding the EMT-mediated mechanisms of the regulation of SP cells could enable the identification of new therapeutic targets in breast cancer.
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Affiliation(s)
- Paraskevi Mallini
- Biosciences Institute, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Miaojuan Chen
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Kamilla Mahkamova
- Biosciences Institute, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Thomas W. J. Lennard
- Northern Institute for Cancer Research, Newcastle University, 3rd Floor William Leech Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Yue Pan
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Dan Wei
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Katherine Stemke-Hale
- Department of Systems Biology, MD Anderson Cancer Center, University of Texas, Houston, TX 77030, USA
| | - John A. Kirby
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, 3rd Floor William Leech Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Gendie E. Lash
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Annette Meeson
- Biosciences Institute, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
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6
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Macrophage induced ERK-TGF-β1 signaling in MCF7 breast cancer cells result in reversible cancer stem cell plasticity and epithelial mesenchymal transition. Biochim Biophys Acta Gen Subj 2022; 1866:130215. [PMID: 35905921 DOI: 10.1016/j.bbagen.2022.130215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/22/2022] [Accepted: 07/21/2022] [Indexed: 10/31/2022]
Abstract
BACKGROUND Breast cancer is a heterogenous disease composed of multiple clonal populations and the mechanism by which the tumor microenvironment induces cancer stem cell plasticity is not fully understood. METHODS MCF7 breast cancer cells were treated with macrophage conditioned medium (MɸCM). PD98059 and SB431542 were used for ERK and TGF-βR inhibition respectively. Epithelial-mesenchymal transition (EMT) and cancer stem cell markers (CSC) were studied using qRT-PCR and flowcytometry. SCID mice were used for animal experiments. RESULTS MɸCM- induced ERK/TGF-β1 signaling led to enrichment of CSC and EMT in MCF7 cells and mammospheres. These effects were abrogated by both MEK inhibitor PD98059 (TGF-β1 synthesis) and SB431542 (TGF-β1 signaling). The increase in CSC was both hybrid (ALDH1+) and mesenchymal (CD44+ CD24- cells). Increase in hybrid E/M state was at a single cell level as confirmed by the increase in both claudin-1 (E) and vimentin (M). This did not have any growth advantage in SCID mice and monitoring of CSC and EMT markers before and after growth in SCID mice indicated reversal of these markers in tumor cells recovered from mice. Removal of MɸCM and neutralization of TNF-α, IL-6 and IL-1β in MɸCM abrogated ERK phosphorylation, TGF-β and CSC enrichment indicating the requirement of continuous signaling for maintenance. CONCLUSIONS ERK signaling plays an important role in MɸCM- induced EMT and CSC plasticity which is completely reversible upon withdrawal of signals. GENERAL SIGNIFICANCE Our experimental observations support the semi-independent nature of EMT-stemness connection which is very dynamic and reversible depending on the microenvironment.
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7
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TGF-β, to target or not to target; to prevent thyroid cancer progression? Biochim Biophys Acta Rev Cancer 2022; 1877:188752. [PMID: 35728736 DOI: 10.1016/j.bbcan.2022.188752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/22/2022]
Abstract
Thyroid cancer (TC) is a common endocrine cancer with a rising incidence. Current treatment fails to eliminate aggressive thyroid tumours, prompting an investigation into the processes that cause disease progression. In this review, we provide insight into TGF-β driven epithelial to mesenchymal transition (EMT), summarizing the current literature surrounding thyroid carcinogenesis, and discuss the potential for therapeutic strategies targeting the TGF-β signalling pathway. Understanding the underlying mechanisms that regulate cancer stem cell (CSC) growth and TGF-β signalling may provide novel therapeutic approaches for highly resistant TCs.
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8
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Mikuła-Pietrasik J, Rutecki S, Książek K. The functional multipotency of transforming growth factor β signaling at the intersection of senescence and cancer. Cell Mol Life Sci 2022; 79:196. [PMID: 35305149 PMCID: PMC11073081 DOI: 10.1007/s00018-022-04236-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/22/2022] [Accepted: 03/08/2022] [Indexed: 12/12/2022]
Abstract
The transforming growth factor β (TGF-β) family of cytokines comprises a group of proteins, their receptors, and effector molecules that, in a coordinated manner, modulate a plethora of physiological and pathophysiological processes. TGF-β1 is the best known and plausibly most active representative of this group. It acts as an immunosuppressant, contributes to extracellular matrix remodeling, and stimulates tissue fibrosis, differentiation, angiogenesis, and epithelial-mesenchymal transition. In recent years, this cytokine has been established as a vital regulator of organismal aging and cellular senescence. Finally, the role of TGF-β1 in cancer progression is no longer in question. Because this protein is involved in so many, often overlapping phenomena, the question arises whether it can be considered a molecular bridge linking some of these phenomena together and governing their reciprocal interactions. In this study, we reviewed the literature from the perspective of the role of various TGF-β family members as regulators of a complex mutual interplay between senescence and cancer. These aspects are then considered in a broader context of remaining TGF-β-related functions and coexisting processes. The main narrative axis in this work is centered around the interaction between the senescence of normal peritoneal cells and ovarian cancer cells. The discussion also includes examples of TGF-β activity at the interface of other normal and cancer cell types.
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Affiliation(s)
- Justyna Mikuła-Pietrasik
- Department of Pathophysiology of Ageing and Civilization Diseases, Długa ½ Str, Poznań University of Medical Sciences, 61-848, Poznań, Poland
| | - Szymon Rutecki
- Department of Pathophysiology of Ageing and Civilization Diseases, Długa ½ Str, Poznań University of Medical Sciences, 61-848, Poznań, Poland
| | - Krzysztof Książek
- Department of Pathophysiology of Ageing and Civilization Diseases, Długa ½ Str, Poznań University of Medical Sciences, 61-848, Poznań, Poland.
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9
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Kukal S, Guin D, Rawat C, Bora S, Mishra MK, Sharma P, Paul PR, Kanojia N, Grewal GK, Kukreti S, Saso L, Kukreti R. Multidrug efflux transporter ABCG2: expression and regulation. Cell Mol Life Sci 2021; 78:6887-6939. [PMID: 34586444 PMCID: PMC11072723 DOI: 10.1007/s00018-021-03901-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/24/2021] [Accepted: 07/15/2021] [Indexed: 12/15/2022]
Abstract
The adenosine triphosphate (ATP)-binding cassette efflux transporter G2 (ABCG2) was originally discovered in a multidrug-resistant breast cancer cell line. Studies in the past have expanded the understanding of its role in physiology, disease pathology and drug resistance. With a widely distributed expression across different cell types, ABCG2 plays a central role in ATP-dependent efflux of a vast range of endogenous and exogenous molecules, thereby maintaining cellular homeostasis and providing tissue protection against xenobiotic insults. However, ABCG2 expression is subjected to alterations under various pathophysiological conditions such as inflammation, infection, tissue injury, disease pathology and in response to xenobiotics and endobiotics. These changes may interfere with the bioavailability of therapeutic substrate drugs conferring drug resistance and in certain cases worsen the pathophysiological state aggravating its severity. Considering the crucial role of ABCG2 in normal physiology, therapeutic interventions directly targeting the transporter function may produce serious side effects. Therefore, modulation of transporter regulation instead of inhibiting the transporter itself will allow subtle changes in ABCG2 activity. This requires a thorough comprehension of diverse factors and complex signaling pathways (Kinases, Wnt/β-catenin, Sonic hedgehog) operating at multiple regulatory levels dictating ABCG2 expression and activity. This review features a background on the physiological role of transporter, factors that modulate ABCG2 levels and highlights various signaling pathways, molecular mechanisms and genetic polymorphisms in ABCG2 regulation. This understanding will aid in identifying potential molecular targets for therapeutic interventions to overcome ABCG2-mediated multidrug resistance (MDR) and to manage ABCG2-related pathophysiology.
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Affiliation(s)
- Samiksha Kukal
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Debleena Guin
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Main Bawana Road, Delhi, 110042, India
| | - Chitra Rawat
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shivangi Bora
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Main Bawana Road, Delhi, 110042, India
| | - Manish Kumar Mishra
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Main Bawana Road, Delhi, 110042, India
| | - Priya Sharma
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
| | - Priyanka Rani Paul
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Neha Kanojia
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Gurpreet Kaur Grewal
- Department of Biotechnology, Kanya Maha Vidyalaya, Jalandhar, Punjab, 144004, India
| | - Shrikant Kukreti
- Nucleic Acids Research Lab, Department of Chemistry, University of Delhi (North Campus), Delhi, 110007, India
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, P. le Aldo Moro 5, 00185, Rome, Italy
| | - Ritushree Kukreti
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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10
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Veen LM, Skrabanja TLP, Derks S, de Gruijl TD, Bijlsma MF, van Laarhoven HWM. The role of transforming growth factor β in upper gastrointestinal cancers: A systematic review. Cancer Treat Rev 2021; 100:102285. [PMID: 34536730 DOI: 10.1016/j.ctrv.2021.102285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/27/2021] [Accepted: 08/29/2021] [Indexed: 01/02/2023]
Abstract
Esophageal and gastric malignancies are associated with poor prognosis, in part due to development of recurrences or metastases after curative treatment. The transforming growth factor β (TGF-β) pathway might play a role in the development of treatment resistance. In this systematic review, we provide an overview of preclinical studies investigating the role of TGF-β in esophageal and gastric malignancies. We systematically searched MEDLINE/PubMed and EMBASE for eligible preclinical studies describing the effect of TGF-β or TGF-β inhibition on hallmarks of cancer, such as proliferation, migration, invasion, angiogenesis and immune evasion. In total, 2107 records were screened and 45 articles were included, using mouse models and 45 different cell lines. TGF-β failed to induce apoptosis in twelve of sixteen tested cell lines. TGF-β could either decrease (five cell lines) or increase proliferation (seven cell lines) in gastric cancer cells, but had no effect in esophageal cancer cells. In all esophageal and all but two gastric cancer cell lines, TGF-β increased migratory, adhesive and invasive capacities. In vivo studies showed increased metastasis in response to TGF-β treatment. Additionally, TGF-β was shown to induce vascular endothelial growth factor production and differentiation of cancer-associated fibroblasts and regulatory T-cells. In conclusion, we found that TGF-β enhances hallmarks of cancer in most gastric and esophageal cancer cell lines, but not in all. Therefore, targeting the TGF-β pathway could be an attractive strategy in patients with gastric or esophageal cancer, but additional clinical trials are needed to define patient groups who would benefit most.
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Affiliation(s)
- Linde M Veen
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam University Medical Centers, University of Amsterdam, De Boelelaan 1117-1118, 1081 HV Amsterdam, The Netherlands.
| | - Tim L P Skrabanja
- Laboratory of Experimental Oncology and Radiobiology, Center for Experimental and Molecular Medicine, Cancer Center Amsterdam, Amsterdam University Medical Centers, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Sarah Derks
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam University Medical Centers, University of Amsterdam, De Boelelaan 1117-1118, 1081 HV Amsterdam, The Netherlands
| | - Tanja D de Gruijl
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, De Boelelaan 1117-1118, 1081 HV Amsterdam, The Netherlands
| | - Maarten F Bijlsma
- Laboratory of Experimental Oncology and Radiobiology, Center for Experimental and Molecular Medicine, Cancer Center Amsterdam, Amsterdam University Medical Centers, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Hanneke W M van Laarhoven
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam University Medical Centers, University of Amsterdam, De Boelelaan 1117-1118, 1081 HV Amsterdam, The Netherlands
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11
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TGF-β/activin signaling promotes CDK7 inhibitor resistance in triple-negative breast cancer cells through upregulation of multidrug transporters. J Biol Chem 2021; 297:101162. [PMID: 34481843 PMCID: PMC8498470 DOI: 10.1016/j.jbc.2021.101162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/23/2021] [Accepted: 08/31/2021] [Indexed: 01/10/2023] Open
Abstract
Cyclin-dependent kinase 7 (CDK7) is a master regulatory kinase that drives cell cycle progression and stimulates expression of oncogenes in a myriad of cancers. Inhibitors of CDK7 (CDK7i) are currently in clinical trials; however, as with many cancer therapies, patients will most likely experience recurrent disease due to acquired resistance. Identifying targets underlying CDK7i resistance will facilitate prospective development of new therapies that can circumvent such resistance. Here we utilized triple-negative breast cancer as a model to discern mechanisms of resistance as it has been previously shown to be highly responsive to CDK7 inhibitors. After generating cell lines with acquired resistance, high-throughput RNA sequencing revealed significant upregulation of genes associated with efflux pumps and transforming growth factor-beta (TGF-β) signaling pathways. Genetic silencing or pharmacological inhibition of ABCG2, an efflux pump associated with multidrug resistance, resensitized resistant cells to CDK7i, indicating a reliance on these transporters. Expression of activin A (INHBA), a member of the TGF-β family of ligands, was also induced, whereas its intrinsic inhibitor, follistatin (FST), was repressed. In resistant cells, increased phosphorylation of SMAD3, a downstream mediator, confirmed an increase in activin signaling, and phosphorylated SMAD3 directly bound the ABCG2 promoter regulatory region. Finally, pharmacological inhibition of TGF-β/activin receptors or genetic silencing of SMAD4, a transcriptional partner of SMAD3, reversed the upregulation of ABCG2 in resistant cells and phenocopied ABCG2 inhibition. This study reveals that inhibiting the TGF-β/Activin-ABCG2 pathway is a potential avenue for preventing or overcoming resistance to CDK7 inhibitors.
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12
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Nishimura S, Yashiro M, Sera T, Yamamoto Y, Kushitani Y, Sugimoto A, Kushiyama S, Togano S, Kuroda K, Okuno T, Murakami Y, Ohira M. Serine threonine kinase 11/liver kinase B1 mutation in sporadic scirrhous-type gastric cancer cells. Carcinogenesis 2021; 41:1616-1623. [PMID: 32236518 DOI: 10.1093/carcin/bgaa031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 03/20/2020] [Accepted: 03/30/2020] [Indexed: 01/24/2023] Open
Abstract
Scirrhous-type gastric carcinoma (SGC), which is characterized by the rapid proliferation of cancer cells accompanied by extensive fibrosis, shows extremely poor survival. A reason for the poor prognosis of SGC is that the driver gene responsible for SGC has not been identified. To identify the characteristic driver gene of SGC, we examined the genomic landscape of six human SGC cell lines of OCUM-1, OCUM-2M, OCUM-8, OCUM-9, OCUM-12 and OCUM-14, using multiplex gene panel testing by next-generation sequencing. In this study, the non-synonymous mutations of serine threonine kinase 11/liver kinase B1 (STK11/LKB1) gene were detected in OCUM-12, OCUM-2M and OCUM-14 among the six SGC cell lines. Capillary sequencing analysis confirmed the non-sense or missense mutation of STK11/LKB1 in the three cell lines. Western blot analysis showed that LKB1 expression was decreased in OCUM-12 cells and OCUM-14 cells harboring STK11/LKB1 mutation. The mammalian target of rapamycin (mTOR) inhibitor significantly inhibited the proliferation of OCUM-12 and OCUM-14 cells. The correlations between STK11/LKB1 expression and clinicopathologic features of gastric cancer were examined using 708 primary gastric carcinomas by immunochemical study. The low STK11/LKB1 expression group was significantly associated with SGC, high invasion depth and frequent nodal involvement, in compared with the high STK11/LKB1 expression group. Collectively, our study demonstrated that STK11/LKB1 mutation might be responsible for the progression of SGC, and suggested that mTOR signaling by STK11/LKB1 mutation might be one of therapeutic targets for patients with SGC.
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Affiliation(s)
- Sadaaki Nishimura
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masakazu Yashiro
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tomohiro Sera
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yurie Yamamoto
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yukako Kushitani
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Atsushi Sugimoto
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Shuhei Kushiyama
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Shingo Togano
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kenji Kuroda
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tomohisa Okuno
- Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yoshiki Murakami
- Department of Molecular Pathology, Tokyo Medical University, Tokyo, Japan
| | - Masaichi Ohira
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
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13
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Gao S, Soares F, Wang S, Wong CC, Chen H, Yang Z, Liu W, Go MYY, Ahmed M, Zeng Y, O’Brien CA, Sung JJY, He HH, Yu J. CRISPR screens identify cholesterol biosynthesis as a therapeutic target on stemness and drug resistance of colon cancer. Oncogene 2021; 40:6601-6613. [PMID: 34621019 PMCID: PMC8639446 DOI: 10.1038/s41388-021-01882-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 05/15/2021] [Accepted: 06/01/2021] [Indexed: 12/13/2022]
Abstract
Cancer stem cells (CSCs) are responsible for tumor progression, recurrence, and drug resistance. To identify genetic vulnerabilities of colon cancer, we performed targeted CRISPR dropout screens comprising 657 Drugbank targets and 317 epigenetic regulators on two patient-derived colon CSC-enriched spheroids. Next-generation sequencing of pooled genomic DNAs isolated from surviving cells yielded therapeutic candidates. We unraveled 44 essential genes for colon CSC-enriched spheroids propagation, including key cholesterol biosynthetic genes (HMGCR, FDPS, and GGPS1). Cholesterol biosynthesis was induced in colon cancer tissues, especially CSC-enriched spheroids. The genetic and pharmacological inhibition of HMGCR/FDPS impaired self-renewal capacity and tumorigenic potential of the spheroid models in vitro and in vivo. Mechanistically, HMGCR or FDPS depletion impaired cancer stemness characteristics by activating TGF-β signaling, which in turn downregulated expression of inhibitors of differentiation (ID) proteins, key regulators of cancer stemness. Cholesterol and geranylgeranyl diphosphate (GGPP) rescued the growth inhibitory and signaling effect of HMGCR/FDPS blockade, implying a direct role of these metabolites in modulating stemness. Finally, cholesterol biosynthesis inhibitors and 5-FU demonstrated antitumor synergy in colon CSC-enriched spheroids, tumor organoids, and xenografts. Taken together, our study unravels novel genetic vulnerabilities of colon CSC-enriched spheroids and suggests cholesterol biosynthesis as a potential target in conjunction with traditional chemotherapy for colon cancer treatment.
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Affiliation(s)
- Shanshan Gao
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China ,grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada
| | - Fraser Soares
- grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada
| | - Shiyan Wang
- grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada
| | - Chi Chun Wong
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Huarong Chen
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Zhenjie Yang
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Weixin Liu
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Minnie Y. Y. Go
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Musaddeque Ahmed
- grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada
| | - Yong Zeng
- grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada
| | - Catherine Adell O’Brien
- grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada
| | - Joseph J. Y. Sung
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Housheng Hansen He
- grid.415224.40000 0001 2150 066XPrincess Margaret Cancer Centre, University Health Network, Ontario, ON Canada ,grid.17063.330000 0001 2157 2938Department of Medical Biophysics, University of Toronto, Ontario, ON Canada
| | - Jun Yu
- grid.10784.3a0000 0004 1937 0482Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
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14
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Shafi S, Khan S, Hoda F, Fayaz F, Singh A, Khan MA, Ali R, Pottoo FH, Tariq S, Najmi AK. Decoding Novel Mechanisms and Emerging Therapeutic Strategies in Breast Cancer Resistance. Curr Drug Metab 2020; 21:199-210. [DOI: 10.2174/1389200221666200303124946] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/12/2019] [Accepted: 12/30/2019] [Indexed: 12/24/2022]
Abstract
Breast cancer (BC), an intricate and highly heterogeneous disorder, has presently afflicted 2.09 million females globally. Chemoresistance remains a paramount challenge in the treatment of BC. Owing to its assorted nature, the chemoresistant mechanisms of BC still need intensive research. Accumulating evidence suggests that abnormalities related to the biogenesis of cancer stem cells (CSCs) and microRNAs (miRNAs) are associated with BC progression and chemoresistance. The presently available interventions are inadequate to target chemoresistance, therefore more efficient alternatives are urgently needed to improvise existing therapeutic regimens. A myriad of strategies is being explored, such as immunotherapy, gene therapy, and combination treatment to surmount chemoresistance. Additionally, nanoparticles as chemotherapeutic carriers put forward the options to encapsulate numerous drugs, alone as well as in combination for cancer theranostics. This review summarizes the chemoresistance mechanisms of miRNAs and CSCs as well as the most recently documented therapeutic approaches for the treatment of chemoresistance in BC. By unraveling the underpinning mechanism of BC chemoresistance, researchers could possibly develop more efficient treatment strategies towards BC.
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Affiliation(s)
- Sadat Shafi
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Sana Khan
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Farazul Hoda
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Faizana Fayaz
- Department of Pharmaceutical Chemistry, Delhi Institute of Pharmaceutical Sciences and Research, Sector-3, MB Road, Pushp Vihar, New Delhi 110017, India
| | - Archu Singh
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Mohammad Ahmed Khan
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Ruhi Ali
- Department of Pharmaceutical Chemistry, Delhi Institute of Pharmaceutical Sciences and Research, Sector-3, MB Road, Pushp Vihar, New Delhi 110017, India
| | - Faheem Hyder Pottoo
- Department of Pharmacology, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Sana Tariq
- Department of Pharmaceutical Chemistry, Delhi Institute of Pharmaceutical Sciences and Research, Sector-3, MB Road, Pushp Vihar, New Delhi 110017, India
| | - Abul Kalam Najmi
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
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15
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Okazaki Y, Chew SH, Nagai H, Yamashita Y, Ohara H, Jiang L, Akatsuka S, Takahashi T, Toyokuni S. Overexpression of miR-199/214 is a distinctive feature of iron-induced and asbestos-induced sarcomatoid mesothelioma in rats. Cancer Sci 2020; 111:2016-2027. [PMID: 32248600 PMCID: PMC7293088 DOI: 10.1111/cas.14405] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/17/2020] [Accepted: 03/24/2020] [Indexed: 12/13/2022] Open
Abstract
Malignant mesothelioma (MM) is one of the most lethal tumors in humans. The onset of MM is linked to exposure to asbestos, which generates reactive oxygen species (ROS). ROS are believed to be derived from the frustrated phagocytosis and the iron in asbestos. To explore the pathogenesis of MM, peritoneal MM was induced in rats by the repeated intraperitoneal injection of iron saccharate and nitrilotriacetate. In the present study, we used microarray techniques to screen the microRNA (miR) expression profiles of these MM. We observed that the histological subtype impacted the hierarchical clustering of miR expression profiles and determined that miR-199/214 is a distinctive feature of iron saccharate-induced sarcomatoid mesothelioma (SM). Twist1, a transcriptional regulator of the epithelial-mesenchymal transition, has been shown to activate miR-199/214 transcription; thus, the expression level of Twist1 was examined in iron-induced and asbestos-induced mesotheliomas in rats. Twist1 was exclusively expressed in iron saccharate-induced SM but not in the epithelioid subtype. The Twist1-miR-199/214 axis is activated in iron saccharate-induced and asbestos-induced SM. The expression levels of miR-214 and Twist1 were correlated in an asbestos-induced MM cell line, suggesting that the Twist1-miR-199/214 axis is preserved. MeT5A, an immortalized human mesothelial cell line, was used for the functional analysis of miR. The overexpression of miR-199/214 promoted cellular proliferation, mobility and phosphorylation of Akt and ERK in MeT5A cells. These results indicate that miR-199/214 may affect the aggressive biological behavior of SM.
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Affiliation(s)
- Yasumasa Okazaki
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Shan Hwu Chew
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Hirotaka Nagai
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Yoriko Yamashita
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Hiroki Ohara
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Li Jiang
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Shinya Akatsuka
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
| | - Takashi Takahashi
- Division of Molecular CarcinogenesisNagoya University Graduate School of MedicineNagoyaJapan
- Aichi Cancer Center Research InstituteNagoyaJapan
| | - Shinya Toyokuni
- Department of Pathology and Biological ResponsesNagoya University Graduate School of MedicineNagoyaJapan
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16
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Madden EC, Gorman AM, Logue SE, Samali A. Tumour Cell Secretome in Chemoresistance and Tumour Recurrence. Trends Cancer 2020; 6:489-505. [PMID: 32460003 DOI: 10.1016/j.trecan.2020.02.020] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 02/20/2020] [Accepted: 02/26/2020] [Indexed: 12/22/2022]
Abstract
Chemoresistance is a major factor driving tumour relapse and the high rates of cancer-related deaths. Understanding how cancer cells overcome chemotherapy-induced cell death is critical in promoting patient survival. One emerging mechanism of chemoresistance is the tumour cell secretome (TCS), an array of protumorigenic factors released by tumour cells. Chemotherapy exposure can also alter the composition of the TCS, known as therapy-induced TCS, and can promote tumour relapse and the formation of an immunosuppressive tumour microenvironment (TME). Here, we outline how the TCS can protect cancer cells from chemotherapy-induced cell death. We also highlight recent evidence describing how therapy-induced TCS can impact cancer stem cell (CSC) expansion and tumour-associated immune cells to enable tumour regrowth and antitumour immunity.
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Affiliation(s)
- Emma C Madden
- Apoptosis Research Centre, NUI Galway, Galway, Ireland; School of Natural Sciences, NUI Galway, Galway, Ireland
| | - Adrienne M Gorman
- Apoptosis Research Centre, NUI Galway, Galway, Ireland; School of Natural Sciences, NUI Galway, Galway, Ireland
| | - Susan E Logue
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.
| | - Afshin Samali
- Apoptosis Research Centre, NUI Galway, Galway, Ireland; School of Natural Sciences, NUI Galway, Galway, Ireland.
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17
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Epigenetic remodelling shapes inflammatory renal cancer and neutrophil-dependent metastasis. Nat Cell Biol 2020; 22:465-475. [PMID: 32203421 DOI: 10.1038/s41556-020-0491-2] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 02/23/2020] [Indexed: 12/17/2022]
Abstract
Advanced clear cell renal cell carcinoma (ccRCC) frequently causes systemic inflammation. Recent studies have shown that cancer cells reshape the immune landscape by secreting cytokines or chemokines. This phenotype, called cancer-cell-intrinsic inflammation, triggers a metastatic cascade. Here, we identified the functional role and regulatory mechanism of inflammation driven by advanced ccRCC cells. The inflammatory nature of advanced ccRCC was recapitulated in a preclinical model of ccRCC. Amplification of cancer-cell-intrinsic inflammation during ccRCC progression triggered neutrophil-dependent lung metastasis. Massive expression of inflammation-related genes was transcriptionally activated by epigenetic remodelling through mechanisms such as DNA demethylation and super-enhancer formation. A bromodomain and extra-terminal motif inhibitor synchronously suppressed C-X-C-type chemokines in ccRCC cells and decreased neutrophil-dependent lung metastasis. Overall, our findings provide insight into the nature of inflammatory ccRCC, which triggers metastatic cascades, and suggest a potential therapeutic strategy.
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18
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Chemoresistance mechanisms of breast cancer and their countermeasures. Biomed Pharmacother 2019; 114:108800. [PMID: 30921705 DOI: 10.1016/j.biopha.2019.108800] [Citation(s) in RCA: 180] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/13/2019] [Accepted: 03/18/2019] [Indexed: 12/12/2022] Open
Abstract
Chemoresistance is one of the major challenges for the breast cancer treatment. Owing to its heterogeneous nature, the chemoresistance mechanisms of breast cancer are complicated, and not been fully elucidated. The existing treatments fall short of offering adequate solution to drug resistance, so more effective approaches are desperately needed to improve existing therapeutic regimens. To overcome this hurdle, a number of strategies are being investigated, such as novel agents or drug carriers and combination treatment. In addition, some new therapeutics including gene therapy and immunotherapy may be promising for dealing with the resistance. In this article, we review the mechanisms of chemoresistance in breast cancer. Furthermore, the potential therapeutic methods to overcome the resistance were discussed.
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19
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Carrasco-Garcia E, García-Puga M, Arevalo S, Matheu A. Towards precision medicine: linking genetic and cellular heterogeneity in gastric cancer. Ther Adv Med Oncol 2018; 10:1758835918794628. [PMID: 30181784 PMCID: PMC6116075 DOI: 10.1177/1758835918794628] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/24/2018] [Indexed: 12/16/2022] Open
Abstract
Molecular and cellular heterogeneity are phenomena that are revolutionizing
oncology research and becoming critical to the idea of personalized medicine.
Recent comprehensive molecular profiling has identified molecular subtypes of
gastric cancer (GC) and linked them to clinical information. Moreover, GC stem
cells (gCSCs) have been identified and found to be responsible for GC initiation
and progression, Helicobacter pylori oncogenic action and
therapy resistance. Addressing molecular heterogeneity is critical for achieving
an optimal therapeutic approach against GC as well as targeting gCSCs. In this
review, we outline the implications of molecular and cellular heterogeneity in
the treatment of GC and we summarize the clinical impact of the most important
regulators of gCSCs.
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Affiliation(s)
- Estefania Carrasco-Garcia
- Cellular Oncology Group, Biodonostia Health Research Institute, Gipuzkoa, Spain CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Madrid, Spain
| | - Mikel García-Puga
- Cellular Oncology Group, Biodonostia Health Research Institute, San Sebastian, Spain
| | - Sara Arevalo
- Cellular Oncology Group, Biodonostia Health Research Institute, San Sebastian, Spain
| | - Ander Matheu
- Cellular Oncology Group, Biodonostia Health Research Institute, Paseo Dr. Beguiristain s/n, Gipuzkoa, 20014, Spain IKERBASQUE, Basque Foundation, Bilbao, Spain CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes) Madrid, Spain
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20
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Cai Z, Cao Y, Luo Y, Hu H, Ling H. Signalling mechanism(s) of epithelial-mesenchymal transition and cancer stem cells in tumour therapeutic resistance. Clin Chim Acta 2018; 483:156-163. [PMID: 29709449 DOI: 10.1016/j.cca.2018.04.033] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 02/06/2023]
Abstract
Epithelial-mesenchymal transition (EMT) leads to tumour progression, including tumour metastasis, disease recurrence and therapy resistance. Cancer stem cells (CSCs) are a small group of cells that have the ability to undergo self-renewal and heterogeneous differentiation, which play a key role in the occurrence and development of cancer. EMT can promote tumour cells to develop stem cell characteristics, which makes tumours more difficult to treat. Therefore, exploring the role of EMT and CSCs in the metastasis of cancer is of great significance to guide tumour treatment and prognosis. In this review, we discuss EMT and CSCs in cancer progression and therapeutic resistance, with a special focus on the common characteristics and relationships between these processes, to explore the crucial relationships in the development of improved anti-tumour therapies. AREAS COVERED In this brief review article, the author has searched PubMed and Wikipedia for original research and reviewed articles to gather current information on the association of CSCs and EMT with therapeutic resistance characteristics, cancer growth and metastasis, which are believed to be regulated by the TGF-β, Wnt, Hedgehog (Hh), β-catenin, STAT3, Notch, and Nanog signalling pathways and other factors (miRNAs, microenvironment and additional cytokines).
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Affiliation(s)
- Zhihong Cai
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, University of South China, Hengyang, PR China
| | - Yijing Cao
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, University of South China, Hengyang, PR China
| | - Yichen Luo
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, University of South China, Hengyang, PR China
| | - Haobin Hu
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, University of South China, Hengyang, PR China
| | - Hui Ling
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, University of South China, Hengyang, PR China.
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21
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Kim JB, Lee S, Kim HR, Park SY, Lee M, Yoon JH, Kim YJ. Transforming growth factor-β decreases side population cells in hepatocellular carcinoma in vitro. Oncol Lett 2018; 15:8723-8728. [PMID: 29805610 DOI: 10.3892/ol.2018.8441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 02/23/2017] [Indexed: 01/01/2023] Open
Abstract
Hepatocellular carcinoma (HCC) can result from hepatitis B or C infection, fibrosis or cirrhosis. Transforming growth factor-β (TGF-β) is one of the main growth factors associated with fibrosis or cirrhosis progression in the liver, but its role is controversial in hepatocarcinogenesis. In the present study, the effect of TGF-β on the HCC Huh-7 and Huh-Bat cell lines was evaluated. To study the effect of TGF-β, Huh-7 and Huh-Bat cells were treated with TGF-β and a TGF-β receptor inhibitor (SB431542). Cell survival, cell cycle, numbers of side population (SP) cells and expression of the cancer stem cell marker cluster of differentiation (CD)133, epithelial-mesenchymal transition markers (E-cadherin, α-smooth muscle actin and vimentin) and TGF-β-regulated proteins [phospho-c-Jun N-terminal kinase (p-JNK), p-c-Jun and p-smad2] were investigated. TGF-β treatment resulted in decreased cell survival with a targeted effect on SP cells. Expression of CD133 and vimentin was upregulated by treatment with the TGF-β receptor antagonist SB431542, but not with TGF-β. By contrast, TGF-β induced accumulation of cells at G0/G1, and upregulated expression of p-JNK, p-c-Jun and p-smad2. However, these effects were blocked when cells were treated with TGF-β plus SB431542, indicating the specificity of the TGF-β effect. The present results indicated that TGF-β has anticancer effects mediated by survival inhibition of cancer stem cells, which may be developed as a novel therapy for HCC.
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Affiliation(s)
- Jong Bin Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Jongno, Seoul 110-799, Republic of Korea
| | - Seulki Lee
- Biomedical Research Institute, Seoul National University Hospital, Jongno, Seoul 110-799, Republic of Korea
| | - Hye Ri Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Jongno, Seoul 110-799, Republic of Korea
| | - Seo-Young Park
- Biomedical Research Institute, Seoul National University Hospital, Jongno, Seoul 110-799, Republic of Korea
| | - Minjong Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Jongno, Seoul 110-799, Republic of Korea
| | - Jung-Hwan Yoon
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Jongno, Seoul 110-799, Republic of Korea
| | - Yoon Jun Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Jongno, Seoul 110-799, Republic of Korea
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22
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Decreased TGFBR3/betaglycan expression enhances the metastatic abilities of renal cell carcinoma cells through TGF-β-dependent and -independent mechanisms. Oncogene 2018; 37:2197-2212. [PMID: 29391598 PMCID: PMC5906456 DOI: 10.1038/s41388-017-0084-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 11/30/2017] [Accepted: 12/01/2017] [Indexed: 12/31/2022]
Abstract
TGF-β regulates both the tumor-forming and migratory abilities of various types of cancer cells. However, it is unclear how the loss of TGF-β signaling components affects these abilities in clear-cell renal cell carcinoma (ccRCC). In this study, we investigated the role of TGFBR3 (TGF-β type III receptor, also known as betaglycan) in ccRCC. Database analysis revealed decreased expression of TGFBR3 in ccRCC tissues, which correlated with poor prognosis in patients. Orthotopic inoculation experiments using immunocompromised mice indicated that low TGFBR3 expression in ccRCC cells enhanced primary tumor formation and lung metastasis. In the presence of TGFBR3, TGF-β2 decreased the aldehyde dehydrogenase (ALDH)-positive ccRCC cell population, in which renal cancer-initiating cells are enriched. Loss of TGFBR3 also enhanced cell migration in cell culture and induced expression of several mesenchymal markers in a TGF-β-independent manner. Increased lamellipodium formation by FAK-PI3K signaling was observed with TGFBR3 downregulation, and this contributed to TGF-β-independent cell migration in ccRCC cells. Taken together, our findings reveal that loss of TGFBR3 endows ccRCC cells with multiple metastatic abilities through TGF-β-dependent and independent pathways.
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Abstract
Transforming growth factor βs (TGF-βs) are closely related ligands that have pleiotropic activity on most cell types of the body. They act through common heterotetrameric TGF-β type II and type I transmembrane dual specificity kinase receptor complexes, and the outcome of signaling is context-dependent. In normal tissue, they serve a role in maintaining homeostasis. In many diseased states, particularly fibrosis and cancer, TGF-β ligands are overexpressed and the outcome of signaling is diverted toward disease progression. There has therefore been a concerted effort to develop drugs that block TGF-β signaling for therapeutic benefit. This review will cover the basics of TGF-β signaling and its biological activities relevant to oncology, present a summary of pharmacological TGF-β blockade strategies, and give an update on preclinical and clinical trials for TGF-β blockade in a variety of solid tumor types.
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Affiliation(s)
- Rosemary J Akhurst
- Department of Anatomy and Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California 94158-9001
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24
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25
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Song Y, Wang Y, Tong C, Xi H, Zhao X, Wang Y, Chen L. A unified model of the hierarchical and stochastic theories of gastric cancer. Br J Cancer 2017; 116:973-989. [PMID: 28301871 PMCID: PMC5396111 DOI: 10.1038/bjc.2017.54] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 01/16/2017] [Accepted: 01/26/2017] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer (GC) is a life-threatening disease worldwide. Despite remarkable advances in treatments for GC, it is still fatal to many patients due to cancer progression, recurrence and metastasis. Regarding the development of novel therapeutic techniques, many studies have focused on the biological mechanisms that initiate tumours and cause treatment resistance. Tumours have traditionally been considered to result from somatic mutations, either via clonal evolution or through a stochastic model. However, emerging evidence has characterised tumours using a hierarchical organisational structure, with cancer stem cells (CSCs) at the apex. Both stochastic and hierarchical models are reasonable systems that have been hypothesised to describe tumour heterogeneity. Although each model alone inadequately explains tumour diversity, the two models can be integrated to provide a more comprehensive explanation. In this review, we discuss existing evidence supporting a unified model of gastric CSCs, including the regulatory mechanisms of this unified model in addition to the current status of stemness-related targeted therapy in GC patients.
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Affiliation(s)
- Yanjing Song
- Department of General Surgery, Chinese PLA General Hospital, Beijing 100853, China
| | - Yao Wang
- Department of Immunology, Institute of Basic Medicine, School of Life Sciences, Chinese PLA General Hospital, Beijing 100853, China
| | - Chuan Tong
- Department of Immunology, Institute of Basic Medicine, School of Life Sciences, Chinese PLA General Hospital, Beijing 100853, China
| | - Hongqing Xi
- Department of General Surgery, Chinese PLA General Hospital, Beijing 100853, China
| | - Xudong Zhao
- Department of General Surgery, Chinese PLA General Hospital, Beijing 100853, China
| | - Yi Wang
- Department of General Surgery, Chinese PLA General Hospital, Beijing 100853, China
| | - Lin Chen
- Department of General Surgery, Chinese PLA General Hospital, Beijing 100853, China
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26
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Abbaszadegan MR, Bagheri V, Razavi MS, Momtazi AA, Sahebkar A, Gholamin M. Isolation, identification, and characterization of cancer stem cells: A review. J Cell Physiol 2017; 232:2008-2018. [PMID: 28019667 DOI: 10.1002/jcp.25759] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 12/22/2016] [Indexed: 12/17/2022]
Abstract
Cancer stem cells (CSCs) or tumor-initiating cells (TICs) as a small subset of neoplastic cells are able to produce a tumor (tumorigenesis), maintain the population of tumorigenic cells (self-renewal), and generate the heterogeneous cells constructing the entire tumor (pluripotency). The research on stationary and circulating CSCs due to resistance to conventional therapies and inability in complete eradication of cancer is critical for developing novel therapeutic strategies for a more effective reduction in the risk of tumor metastasis and cancer recurrence. This review compiles information about different methods of detection and dissociation, side population, cellular markers, and establishment culture of CSCs, as well as characteristics of CSCs such as tumorigenicity, and signaling pathways associated with self-renewal and the capability of the same histological tumor regeneration in various cancers.
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Affiliation(s)
- Mohammad Reza Abbaszadegan
- Human Genetic Division, Immunology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Medical Genetics Research Center, Faculty of Medical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vahid Bagheri
- Human Genetic Division, Immunology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Immunology, Faculty of Medical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahya Shariat Razavi
- Human Genetic Division, Immunology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Biology, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran
| | - Amir Abbas Momtazi
- Student Research Committee, Nanotechnology Research Center, Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehran Gholamin
- Human Genetic Division, Immunology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Laboratory Sciences, Faculty of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
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27
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Prasanphanich AF, White DE, Gran MA, Kemp ML. Kinetic Modeling of ABCG2 Transporter Heterogeneity: A Quantitative, Single-Cell Analysis of the Side Population Assay. PLoS Comput Biol 2016; 12:e1005188. [PMID: 27851764 PMCID: PMC5113006 DOI: 10.1371/journal.pcbi.1005188] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 10/10/2016] [Indexed: 12/13/2022] Open
Abstract
The side population (SP) assay, a technique used in cancer and stem cell research, assesses the activity of ABC transporters on Hoechst staining in the presence and absence of transporter inhibition, identifying SP and non-SP cell (NSP) subpopulations by differential staining intensity. The interpretation of the assay is complicated because the transporter-mediated mechanisms fail to account for cell-to-cell variability within a population or adequately control the direct role of transporter activity on staining intensity. We hypothesized that differences in dye kinetics at the single-cell level, such as ABCG2 transporter-mediated efflux and DNA binding, are responsible for the differential cell staining that demarcates SP/NSP identity. We report changes in A549 phenotype during time in culture and with TGFβ treatment that correlate with SP size. Clonal expansion of individually sorted cells re-established both SP and NSPs, indicating that SP membership is dynamic. To assess the validity of a purely kinetics-based interpretation of SP/NSP identity, we developed a computational approach that simulated cell staining within a heterogeneous cell population; this exercise allowed for the direct inference of the role of transporter activity and inhibition on cell staining. Our simulated SP assay yielded appropriate SP responses for kinetic scenarios in which high transporter activity existed in a portion of the cells and little differential staining occurred in the majority of the population. With our approach for single-cell analysis, we observed SP and NSP cells at both ends of a transporter activity continuum, demonstrating that features of transporter activity as well as DNA content are determinants of SP/NSP identity.
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Affiliation(s)
- Adam F. Prasanphanich
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University, Atlanta, Georgia, United States of America
| | - Douglas E. White
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University, Atlanta, Georgia, United States of America
| | - Margaret A. Gran
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University, Atlanta, Georgia, United States of America
| | - Melissa L. Kemp
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University, Atlanta, Georgia, United States of America
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28
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Transforming growth factor β as regulator of cancer stemness and metastasis. Br J Cancer 2016; 115:761-9. [PMID: 27537386 PMCID: PMC5046208 DOI: 10.1038/bjc.2016.255] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 07/14/2016] [Accepted: 07/19/2016] [Indexed: 12/15/2022] Open
Abstract
Key elements of cancer progression towards metastasis are the biological actions of cancer stem cells and stromal cells in the tumour microenvironment. Cross-communication between tumour and stromal cells is mediated by secreted cytokines, one of which, the transforming growth factor β (TGFβ), regulates essentially every cell within the malignant tissue. In this article, we focus on the actions of TGFβ on cancer stem cells, cancer-associated fibroblasts and immune cells that assist the overall process of metastatic dissemination. We aim at illustrating intricate connections made by various cells in the tumour tissue and which depend on the action of TGFβ.
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29
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Morikawa M, Derynck R, Miyazono K. TGF-β and the TGF-β Family: Context-Dependent Roles in Cell and Tissue Physiology. Cold Spring Harb Perspect Biol 2016; 8:8/5/a021873. [PMID: 27141051 DOI: 10.1101/cshperspect.a021873] [Citation(s) in RCA: 827] [Impact Index Per Article: 103.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The transforming growth factor-β (TGF-β) is the prototype of the TGF-β family of growth and differentiation factors, which is encoded by 33 genes in mammals and comprises homo- and heterodimers. This review introduces the reader to the TGF-β family with its complexity of names and biological activities. It also introduces TGF-β as the best-studied factor among the TGF-β family proteins, with its diversity of roles in the control of cell proliferation and differentiation, wound healing and immune system, and its key roles in pathology, for example, skeletal diseases, fibrosis, and cancer.
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Affiliation(s)
- Masato Morikawa
- Ludwig Cancer Research, Science for Life Laboratory, Uppsala University, Biomedical Center, SE-751 24 Uppsala, Sweden
| | - Rik Derynck
- Department of Cell and Tissue Biology, University of California at San Francisco, San Francisco, California 94143
| | - Kohei Miyazono
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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30
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Sakurai T, Isogaya K, Sakai S, Morikawa M, Morishita Y, Ehata S, Miyazono K, Koinuma D. RNA-binding motif protein 47 inhibits Nrf2 activity to suppress tumor growth in lung adenocarcinoma. Oncogene 2016; 35:5000-9. [PMID: 26923328 PMCID: PMC5036161 DOI: 10.1038/onc.2016.35] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 12/22/2015] [Accepted: 01/11/2016] [Indexed: 01/27/2023]
Abstract
RNA-binding proteins provide a new layer of posttranscriptional regulation of RNA during cancer progression. We identified RNA-binding motif protein 47 (RBM47) as a target gene of transforming growth factor (TGF)-β in mammary gland epithelial cells (NMuMG cells) that have undergone the epithelial-to-mesenchymal transition. TGF-β repressed RBM47 expression in NMuMG cells and lung cancer cell lines. Expression of RBM47 correlated with good prognosis in patients with lung, breast and gastric cancer. RBM47 suppressed the expression of cell metabolism-related genes, which were the direct targets of nuclear factor erythroid 2-related factor 2 (Nrf2; also known as NFE2L2). RBM47 bound to KEAP1 and Cullin 3 mRNAs, and knockdown of RBM47 inhibited their protein expression, which led to enhanced binding of Nrf2 to target genomic regions. Knockdown of RBM47 also enhanced the expression of some Nrf2 activators, p21/CDKN1A and MafK induced by TGF-β. Both mitochondrial respiration rates and the side population cells in lung cancer cells increased in the absence of RBM47. Our findings, together with the enhanced tumor formation and metastasis of xenografted mice by knockdown of the RBM47 expression, suggested tumor-suppressive roles for RBM47 through the inhibition of Nrf2 activity.
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Affiliation(s)
- T Sakurai
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Isogaya
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Sakai
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - M Morikawa
- Ludwig Institute for Cancer Research, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Y Morishita
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Ehata
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Miyazono
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - D Koinuma
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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31
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Podolski-Renić A, Milošević Z, Dinić J, Stanković T, Banković J, Pešić M. Mutual regulation and targeting of multidrug resistance and cancer stem phenotype. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00391e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Targeting stemness mechanisms leads to the suppression of ABC transporter activity and elimination of CSCs.
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Affiliation(s)
- Ana Podolski-Renić
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade
- Serbia
| | - Zorica Milošević
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade
- Serbia
| | - Jelena Dinić
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade
- Serbia
| | - Tijana Stanković
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade
- Serbia
| | - Jasna Banković
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade
- Serbia
| | - Milica Pešić
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade
- Serbia
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32
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Miao ZF, Wang ZN, Zhao TT, Xu YY, Gao J, Miao F, Xu HM. Peritoneal milky spots serve as a hypoxic niche and favor gastric cancer stem/progenitor cell peritoneal dissemination through hypoxia-inducible factor 1α. Stem Cells 2015; 32:3062-74. [PMID: 25142304 PMCID: PMC4282537 DOI: 10.1002/stem.1816] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 07/07/2014] [Indexed: 12/12/2022]
Abstract
Peritoneal dissemination is the most common cause of death in gastric cancer patients. The hypoxic microenvironment plays a major role in controlling the tumor stem cell phenotype and is associated with patients' prognosis through hypoxia-inducible factor-1α (HIF-1α), a key transcriptional factor that responds to hypoxic stimuli. During the peritoneal dissemination process, gastric cancer stem/progenitor cells (GCSPCs) are thought to enter into and maintained in peritoneal milky spots (PMSs), which have hypoxic microenvironments. However, the mechanism through which the hypoxic environment of PMSs regulated GCSPC maintenance is still poorly understood. Here, we investigated whether hypoxic PMSs were an ideal cancer stem cell niche suitable for GCSPC engraftment. We also evaluated the mechanisms through which the HIF-1α-mediated hypoxic microenvironment regulated GCSPC fate. We observed a positive correlation between HIF-1α expression and gastric cancer peritoneal dissemination (GCPD) in gastric cancer patients. Furthermore, the GCSPC population expanded in primary gastric cancer cells under hypoxic condition in vitro, and hypoxic GCSPCs showed enhanced self-renewal ability, but reduced differentiation capacity, mediated by HIF-1α. In an animal model, GCSPCs preferentially resided in the hypoxic zone of PMSs; moreover, when the hypoxic microenvironment in PMSs was destroyed, GCPD was significantly alleviated. In conclusion, our results demonstrated that PMSs served as a hypoxic niche and favored GCSPCs peritoneal dissemination through HIF-1α both in vitro and in vivo. These results provided new insights into the GCPD process and may lead to advancements in the clinical treatment of gastric cancer.
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Affiliation(s)
- Zhi-Feng Miao
- Department of Surgical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, People's Republic of China
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33
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Cancer stem cells in human digestive tract malignancies. Tumour Biol 2015; 37:7-21. [DOI: 10.1007/s13277-015-4155-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 09/23/2015] [Indexed: 12/18/2022] Open
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34
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Aikawa T, Mogushi K, Iijima-Tsutsui K, Ishikawa K, Sakurai M, Tanaka H, Mizusawa H, Watase K. Loss of MyD88 alters neuroinflammatory response and attenuates early Purkinje cell loss in a spinocerebellar ataxia type 6 mouse model. Hum Mol Genet 2015; 24:4780-91. [PMID: 26034136 PMCID: PMC4527484 DOI: 10.1093/hmg/ddv202] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 05/26/2015] [Indexed: 11/14/2022] Open
Abstract
Spinocerebellar ataxia type 6 (SCA6) is dominantly inherited neurodegenerative disease, caused by an expansion of CAG repeat encoding a polyglutamine (PolyQ) tract in the Cav2.1 voltage-gated calcium channel. Its key pathological features include selective degeneration of the cerebellar Purkinje cells (PCs), a common target for PolyQ-induced toxicity in various SCAs. Mutant Cav2.1 confers toxicity primarily through a toxic gain-of-function mechanism; however, its molecular basis remains elusive. Here, we studied the cerebellar gene expression patterns of young Sca6-MPI(118Q/118Q) knockin (KI) mice, which expressed mutant Cav2.1 from an endogenous locus and recapitulated many phenotypic features of human SCA6. Transcriptional signatures in the MPI(118Q/118Q) mice were distinct from those in the Sca1(154Q/2Q) mice, a faithful SCA1 KI mouse model. Temporal expression profiles of the candidate genes revealed that the up-regulation of genes associated with microglial activation was initiated before PC degeneration and was augmented as the disease progressed. Histological analysis of the MPI(118Q/118Q) cerebellum showed the predominance of M1-like pro-inflammatory microglia and it was concomitant with elevated expression levels of tumor necrosis factor, interleukin-6, Toll-like receptor (TLR) 2 and 7. Genetic ablation of MyD88, a major adaptor protein conveying TLR signaling, altered expression patterns of M1/M2 microglial phenotypic markers in the MPI(118Q/118Q) cerebellum. More importantly, it ameliorated PC loss and partially rescued motor impairments in the early disease phase. These results suggest that early neuroinflammatory response may play an important role in the pathogenesis of SCA6 and its modulation could pave the way for slowing the disease progression during the early stage of the disease.
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Affiliation(s)
- Tomonori Aikawa
- Center for Brain Integration Research, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan
| | - Kaoru Mogushi
- Department of Bioinformatics, Medical Research Institute, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan, Center for Genomic and Regenerative Medicine, Juntendo University, Tokyo 113-0033, Japan
| | - Kumiko Iijima-Tsutsui
- Department of Bioinformatics, Medical Research Institute, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan, Department of Social Services and Healthcare Management, International University of Health and Welfare, Tochigi 324-8501, Japan and
| | - Kinya Ishikawa
- Department of Neurology and Neurogical Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan
| | | | - Hiroshi Tanaka
- Department of Bioinformatics, Medical Research Institute, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan
| | - Hidehiro Mizusawa
- Center for Brain Integration Research, Department of Neurology and Neurogical Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo 187-8551, Japan
| | - Kei Watase
- Center for Brain Integration Research, Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology (JST), Tokyo 102-8666, Japan,
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35
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Baek SJ, Ishii H, Tamari K, Hayashi K, Nishida N, Konno M, Kawamoto K, Koseki J, Fukusumi T, Hasegawa S, Ogawa H, Hamabe A, Miyo M, Noguchi K, Seo Y, Doki Y, Mori M, Ogawa K. Cancer stem cells: The potential of carbon ion beam radiation and new radiosensitizers (Review). Oncol Rep 2015; 34:2233-7. [PMID: 26330103 DOI: 10.3892/or.2015.4236] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 07/06/2015] [Indexed: 11/06/2022] Open
Abstract
Cancer stem cells (CSCs) are a small population of cells in cancer with stem-like properties such as cell proliferation, multiple differentiation and tumor initiation capacities. CSCs are therapy-resistant and cause cancer metastasis and recurrence. One key issue in cancer therapy is how to target and eliminate CSCs, in order to cure cancer completely without relapse and metastasis. To target CSCs, many cell surface markers, DNAs and microRNAs are considered as CSC markers. To date, the majority of the reported markers are not very specific to CSCs and are also present in non-CSCs. However, the combination of several markers is quite valuable for identifying and targeting CSCs, although more specific identification methods are needed. While CSCs are considered as critical therapeutic targets, useful treatment methods remain to be established. Epigenetic gene regulators, microRNAs, are associated with tumor initiation and progression. MicroRNAs have been recently considered as promising therapeutic targets, which can alter the therapeutic resistance of CSCs through epigenetic modification. Moreover, carbon ion beam radiotherapy is a promising treatment for CSCs. Evidence indicates that the carbon ion beam is more effective against CSCs than the conventional X-ray beam. Combination therapies of radiosensitizing microRNAs and carbon ion beam radiotherapy may be a promising cancer strategy. This review focuses on the identification and treatment resistance of CSCs and the potential of microRNAs as new radiosensitizers and carbon ion beam radiotherapy as a promising therapeutic strategy against CSCs.
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Affiliation(s)
- Sung-Jae Baek
- Department of Radiation Oncology, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hideshi Ishii
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Keisuke Tamari
- Department of Radiation Oncology, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Kazuhiko Hayashi
- Department of Radiation Oncology, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Naohiro Nishida
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Masamitsu Konno
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Koichi Kawamoto
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Jun Koseki
- Department of Cancer Profiling Discovery, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Takahito Fukusumi
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Shinichiro Hasegawa
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hisataka Ogawa
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Atsushi Hamabe
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Masaaki Miyo
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Kozo Noguchi
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yuji Seo
- Department of Radiation Oncology, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Masaki Mori
- Department of Gastroenterological Surgery, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Kazuhiko Ogawa
- Department of Radiation Oncology, Osaka University, Graduate School of Medicine, Suita, Osaka 565-0871, Japan
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36
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Yang W, Mok MTS, Li MSM, Kang W, Wang H, Chan AW, Chou JL, Chen J, Ng EKW, To KF, Yu J, Chan MWY, Chan FKL, Sung JJY, Cheng ASL. Epigenetic silencing of GDF1 disrupts SMAD signaling to reinforce gastric cancer development. Oncogene 2015. [PMID: 26212015 DOI: 10.1038/onc.2015.276] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Accumulating evidence reveals the effectiveness of epigenetic therapy in gastric cancer. However, the molecular mechanisms and targets underlying such therapeutic responses remain elusive. Herein, we report an aberrant yet therapeutically rectifiable epigenetic signaling in gastric carcinogenesis. Administration of DNA-demethylating drug 5-aza-2'-deoxycytidine (5-aza-dC) reduced gastric cancer incidence by ~74% (P < 0.05) in N-nitroso-N-methylurea-treated mice. Through genome-wide methylation scanning, novel promoter hypermethylation-silenced and drug-targeted genes were identified in the resected murine stomach tumors and tissues. We uncovered that growth/differentiation factor 1 (Gdf1), a member of the transforming growth factor-β superfamily, was silenced by promoter hypermethylation in control tumor-bearing mice, but became reactivated in 5-aza-dC-treated mice (P < 0.05). In parallel, the downregulated SMAD2/3 phosphorylation in gastric cancer was revived by 5-aza-dC in vivo. Such hypermethylation-dependent silencing and 5-aza-dC-mediated reactivation of GDF1-SMAD2/3 activity was conserved in human gastric cancer cells (P < 0.05). Subsequent functional characterization further revealed the antiproliferative activity of GDF1, which was exerted through activation of SMAD2/3/4-mediated signaling, transcriptional controls on p15, p21 and c-Myc cell-cycle regulators and phosphorylation of retinoblastoma protein. Clinically, hypermethylation and loss of GDF1 was significantly associated with reduced phosphorylated-SMAD2/3 and poor survival in stomach cancer patients (P < 0.05). Taken together, we demonstrated a causal relationship between DNA methylation and a tumor-suppressive pathway in gastric cancer. Epigenetic silencing of GDF1 abrogates the growth-inhibitory SMAD signaling and renders proliferation advantage to gastric epithelial cells during carcinogenesis. This study lends support to epigenetic therapy for gastric cancer chemoprevention and identifies a potential biomarker for prognosis.
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Affiliation(s)
- W Yang
- State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - M T S Mok
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - M S M Li
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - W Kang
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - H Wang
- The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - A W Chan
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - J-L Chou
- Department of Life Science, National Chung Cheng University, Chia-Yi, Taiwan, ROC
| | - J Chen
- Department of Gastroenterology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - E K W Ng
- Department of Surgery, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - K-F To
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - J Yu
- State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - M W Y Chan
- Department of Life Science, National Chung Cheng University, Chia-Yi, Taiwan, ROC
| | - F K L Chan
- State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - J J Y Sung
- State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - A S L Cheng
- State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.,School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
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37
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Fujita T, Chiwaki F, Takahashi RU, Aoyagi K, Yanagihara K, Nishimura T, Tamaoki M, Komatsu M, Komatsuzaki R, Matsusaki K, Ichikawa H, Sakamoto H, Yamada Y, Fukagawa T, Katai H, Konno H, Ochiya T, Yoshida T, Sasaki H. Identification and Characterization of CXCR4-Positive Gastric Cancer Stem Cells. PLoS One 2015; 10:e0130808. [PMID: 26110809 PMCID: PMC4481351 DOI: 10.1371/journal.pone.0130808] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 05/25/2015] [Indexed: 12/18/2022] Open
Abstract
Diffuse-type solid tumors are often composed of a high proportion of rarely proliferating (i.e., dormant) cancer cells, strongly indicating the involvement of cancer stem cells (CSCs) Although diffuse-type gastric cancer (GC) patients have a poor prognosis due to high-frequent development of peritoneal dissemination (PD), it is limited knowledge that the PD-associated CSCs and efficacy of CSC-targeting therapy in diffuse-type GC. In this study, we established highly metastatic GC cell lines by in vivo selection designed for the enrichment of PD-associated GC cells. By microarray analysis, we found C-X-C chemokine receptor type 4 (CXCR4) can be a novel marker for highly metastatic CSCs, since CXCR4-positive cells can grow anchorage-independently, initiate tumors in mice, be resistant to cytotoxic drug, and produce differentiated daughter cells. In clinical samples, these CXCR4-positive cells were found from not only late metastasis stage (accumulated ascites) but also earlier stage (peritoneal washings). Moreover, treatment with transforming growth factor-β enhanced the anti-cancer effect of docetaxel via induction of cell differentiation/asymmetric cell division of the CXCR4-positive gastric CSCs even in a dormant state. Therefore, differentiation inducers hold promise for obtaining the maximum therapeutic outcome from currently available anti-cancer drugs through re-cycling of CSCs.
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Affiliation(s)
- Takeshi Fujita
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
- Second Department of Surgery, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Fumiko Chiwaki
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Ryou-u Takahashi
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazuhiko Aoyagi
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazuyoshi Yanagihara
- Division of Translational Research, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Takao Nishimura
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Masashi Tamaoki
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Masayuki Komatsu
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Rie Komatsuzaki
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | | | - Hitoshi Ichikawa
- Department of Clinical Genomics, National Cancer Center Research Institute, Tokyo, Japan
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiromi Sakamoto
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan
| | - Yasuhide Yamada
- Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Takeo Fukagawa
- Gastric Surgery Division, National Cancer Center Hospital, Tokyo, Japan
| | - Hitoshi Katai
- Gastric Surgery Division, National Cancer Center Hospital, Tokyo, Japan
| | - Hiroyuki Konno
- Second Department of Surgery, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Takahiro Ochiya
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan
| | - Teruhiko Yoshida
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroki Sasaki
- Department of Translational Oncology, National Cancer Center Research Institute, Tokyo, Japan
- * E-mail:
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38
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Hoshino Y, Nishida J, Katsuno Y, Koinuma D, Aoki T, Kokudo N, Miyazono K, Ehata S. Smad4 Decreases the Population of Pancreatic Cancer-Initiating Cells through Transcriptional Repression of ALDH1A1. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:1457-70. [PMID: 25769430 DOI: 10.1016/j.ajpath.2015.01.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 12/16/2014] [Accepted: 01/06/2015] [Indexed: 12/16/2022]
Abstract
Cancer progression involves a rare population of undifferentiated cancer-initiating cells that have stem cell-like properties for self-renewal capacity and high tumorigenicity. We investigated how maintenance of pancreatic cancer-initiating cells is influenced by Smad4, which is frequently deleted or mutated in pancreatic cancers cells. Smad4 silencing up-regulated the expression of aldehyde dehydrogenase 1A1 (ALDH1A1) mRNA, whereas forced expression of Smad4 in pancreatic cancer cells down-regulated it. Smad4 and ALDH1 expression inversely correlated in some human clinical pancreatic adenocarcinoma tissues, suggesting that ALDH1 in pancreatic cancer cells was associated with decreased Smad4 expression. We then examined whether ALDH1 served as a marker of pancreatic cancer-initiating cells. Pancreatic cancer cells contained ALDH1(hi) cells in 3% to 10% of total cells, with high tumorigenic potential. Because Smad4 is a major mediator of transforming growth factor (TGF)-β family signaling, we investigated the regulatory mechanism of ALDH activity by TGF-β and bone morphogenetic proteins. Treatment with TGF-β attenuated ALDH1(hi) cells in several pancreatic cancer cells, whereas bone morphogenetic protein-4 was not as potent. Biochemical experiments revealed that TGF-β regulated ALDH1A1 mRNA transcription through binding of Smad4 to its regulatory sequence. It appears that TGF-β negatively regulates ALDH1 expression in pancreatic cancer cells in a Smad-dependent manner and in turn impairs the activity of pancreatic cancer-initiating cells.
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Affiliation(s)
- Yukari Hoshino
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Jun Nishida
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yoko Katsuno
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Daizo Koinuma
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Taku Aoki
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Norihiro Kokudo
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kohei Miyazono
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
| | - Shogo Ehata
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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39
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Tumor-associated macrophages promote cancer stem cell-like properties via transforming growth factor-beta1-induced epithelial-mesenchymal transition in hepatocellular carcinoma. Cancer Lett 2014; 352:160-8. [PMID: 24892648 DOI: 10.1016/j.canlet.2014.05.008] [Citation(s) in RCA: 311] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/04/2014] [Accepted: 05/11/2014] [Indexed: 12/12/2022]
Abstract
Tumor-associated macrophages (TAMs), a crucial component of immune cells infiltrated in tumor microenvironment, have been found to be associated with progression and metastasis of hepatocellular carcinoma (HCC). In this study, we aimed to clarify the mechanism underlying the crosstalk between TAMs and cancer stem cells (CSCs) in HCC. Mouse macrophage cell line RAW264.7 cells were used to investigate the effects of TAMs on mouse hepatoma cell line Hepa1-6 cells in vivo and vitro. A total of 90 clinical samples had pathology-proven HCC were used to evaluate the distribution of TAMs and CSCs and analyze their value in predicting the prognosis. In the study, we have found that the number of TAMs has a positive correlation with the density of CSCs in the marginal of human HCC. Our results show that, cocultured with TAM-conditioned medium (CM) promoted CSC-like properties in Hepa1-6 cells, which underwent EMT and gained higher invasive capability. TAMs secreted more transforming growth factor- beta1 (TGF-beta1) than other phenotypes of macrophage. Furthermore, depletion of TGF-beta1 blocked acquisition of CSC-like properties by inhibition of TGF-beta1-induced EMT. High expression of CD68 in the EpCAM positive expression HCC tissues was strongly associated with both poor cancer-free survival and overall survival in patients. Our results indicate that the TAMs promote CSC-like properties via TGF-beta1-induced EMT and they may contribute to investigate the prognosis of HCC.
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40
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Influence of different hypoxia models on metastatic potential of SGC-7901 gastric cancer cells. Tumour Biol 2014; 35:6801-8. [PMID: 24729089 DOI: 10.1007/s13277-014-1928-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 04/01/2014] [Indexed: 01/10/2023] Open
Abstract
Gastric cancers are one of the most common gastrointestinal tumors with proclivity to metastasis. Hypoxia is an important feature in solid tumor microenvironment; accumulating evidence suggests that chronic and repetitive exposure to hypoxia and reoxygenation seems to provide an advantage to tumor growth. However, mechanisms of intermittent hypoxia regulating gastric cancer metastatic potential remain to be elucidated. In the present study, we established the continuous and intermittent gastric cancer hypoxia models, and we compared the effects of these models on gastric cancer cell metastatic potential. Hypoxia-inducible factor-1α (HIF-1α) and hypoxia target protein/genes expression in response to different hypoxia models were analyzed by Western blot, immunofluorescence, and real-time PCR assays. Gastric cancer cell migration and invasion ability were analyzed by wound healing and Boyden chamber assay. Colony formation and tumor spheroid formation assays were used to assess the ability of self-renewal. Stem-related protein OCT4 and HIF-1α expression were also analyzed by confocal immunofluorescence in single tertiary generation spheroid. We demonstrated that the intermittent hypoxia model upregulated expression of both HIF-1α and hypoxia target protein/genes in a time-dependent manner compared with that of SGC-7901 cells cultured under normoxia. Remarkably, HIF-1α protein was more prone to being located in the nucleus of SGC-7901 cells under conditions of intermittent hypoxia. Gastric cancer cells' migration and invasion ability were significantly enhanced after hypoxic culture; moreover, intermittent hypoxia-conditioned SGC-7901 cells exhibited higher invasiveness than the continuous hypoxia-conditioned SGC-7901 cells. Gastric cancer stem/progenitor cell subpopulation was also enlarged which indicated an enhanced self-renewal ability in hypoxic cultured SGC-7901 cells. Our study emphasizes the significance of hypoxia in regulating gastric cancer cell metastasis potential. Compared with continuous hypoxia, intermittent hypoxia is a more effective and potent hypoxic stimulus. These results provide a new insight to investigate the hypoxic microenvironment within solid tumors.
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41
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CUB-domain containing protein 1 represses the epithelial phenotype of pancreatic cancer cells. Exp Cell Res 2013; 321:209-18. [PMID: 24384474 DOI: 10.1016/j.yexcr.2013.12.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 11/20/2022]
Abstract
The prognosis of pancreatic cancer is dismal due to the frequent metastasis and invasion to surrounding organs. Numerous molecules are involved in the malignant behavior of pancreatic cancer cells, but the entire process remains unclear. Several reports have suggested that CUB-domain containing protein-1 (CDCP1) is highly expressed in pancreatic cancer, but its impact on the invasive growth and the upstream regulator remain elusive. To clarify the role of CDCP1 in pancreatic cancer, we here examined the effects of CDCP1 knockdown on the cell behaviors of pancreatic cancer cells. Knockdown of CDCP1 expression in Panc-1 resulted in reduced cellular migration accompanied by the increased expression of E-cadherin and decreased expression of N-cadherin. Knockdown of CDCP1 attenuated the spheroid formation and resistance against gemcitabine, which are some of the cancer stem cell-related phenotypes. Bone morphogenetic protein 4 (BMP4) was found to induce CDCP1 expression via the extracellular signal regulated kinase pathway, suggesting that CDCP1 has a substantial role in the BMP4-induced epithelial-mesenchymal transition. These results indicate that CDCP1 represses the epithelial phenotype of pancreatic cancer cells.
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42
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Hasegawa T, Yashiro M, Nishii T, Matsuoka J, Fuyuhiro Y, Morisaki T, Fukuoka T, Shimizu K, Shimizu T, Miwa A, Hirakawa K. Cancer-associated fibroblasts might sustain the stemness of scirrhous gastric cancer cells via transforming growth factor-β signaling. Int J Cancer 2013; 134:1785-95. [DOI: 10.1002/ijc.28520] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 09/09/2013] [Accepted: 09/10/2013] [Indexed: 12/14/2022]
Affiliation(s)
- Tsuyoshi Hasegawa
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Masakazu Yashiro
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
- Oncology Institute of Geriatrics and Medical Science; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Takafumi Nishii
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Junko Matsuoka
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Yuhiko Fuyuhiro
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Tamami Morisaki
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Tatsunari Fukuoka
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
| | - Kiyoshi Shimizu
- Pharmacological Research Laboratories; Kyowa Hakko Kirin Co., Ltd., Chiyodaku; Tokyo Japan
| | - Toshiyuki Shimizu
- Research Planning Department; Kyowa Hakko Kirin Co., Ltd., Chiyodaku; Tokyo Japan
| | - Atsushi Miwa
- Biologics Research Laboratories; Kyowa Hakko Kirin Co., Ltd., Chiyodaku; Tokyo Japan
| | - Kosei Hirakawa
- Department of Surgical Oncology; Osaka City University Graduate School of Medicine, Abeno-ku; Osaka Japan
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43
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Abstract
Gastric cancer (GC) remains one of the most common cancers worldwide. Its prevalence is still on the rise in the developing countries due to the ageing population. The cancer stem cell (CSC) theory provides a new insight into the interpretation of tumor initiation, aggressive growth, recurrence, and metastasis of cancer, as well as the development of new strategies for cancer treatment. This review will focus on the progress of biomarkers and signaling pathways of CSCs, the complex crosstalk networks between the microenvironment and CSCs, and the development of therapeutic approaches against CSCs, predominantly focusing on GC.
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44
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Motizuki M, Isogaya K, Miyake K, Ikushima H, Kubota T, Miyazono K, Saitoh M, Miyazawa K. Oligodendrocyte transcription factor 1 (Olig1) is a Smad cofactor involved in cell motility induced by transforming growth factor-β. J Biol Chem 2013; 288:18911-22. [PMID: 23720758 DOI: 10.1074/jbc.m113.480996] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Transforming growth factor (TGF)-β plays crucial roles in embryonic development and adult tissue homeostasis by eliciting various cellular responses in target cells. TGF-β signaling is principally mediated through receptor-activated Smad proteins, which regulate expression of target genes in cooperation with other DNA-binding transcription factors (Smad cofactors). In this study, we found that the basic helix-loop-helix transcription factor Olig1 is a Smad cofactor involved in TGF-β-induced cell motility. Knockdown of Olig1 attenuated TGF-β-induced cell motility in chamber migration and wound healing assays. In contrast, Olig1 knockdown had no effect on bone morphogenetic protein-induced cell motility, TGF-β-induced cytostasis, or epithelial-mesenchymal transition. Furthermore, we observed that cooperation of Smad2/3 with Olig1 is regulated by a peptidyl-prolyl cis/trans-isomerase, Pin1. TGF-β-induced cell motility, induction of Olig1-regulated genes, and physical interaction between Smad2/3 and Olig1 were all inhibited after knockdown of Pin1, indicating a novel mode of regulation of Smad signaling. We also found that Olig1 interacts with the L3 loop of Smad3. Using a synthetic peptide corresponding to the L3 loop of Smad3, we succeeded in selectively inhibiting TGF-β-induced cell motility. These findings may lead to a new strategy for selective regulation of TGF-β-induced cellular responses.
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Affiliation(s)
- Mitsuyoshi Motizuki
- Department of Biochemistry, University of Yamanashi, Yamanashi 409-3898, Japan
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Abstract
PURPOSE OF REVIEW TGF-β acts as a potent driver of cancer progression through the induction of epithelial-mesenchymal transition (EMT), in which epithelial cells acquire mesenchymal phenotype, leading to enhanced motility and invasion. Recent reports highlight the fundamental roles of TGF-β-induced EMT in multiple aspects of cancer progression. In this review, we focus on the novel insights into the roles of TGF-β-induced EMT in cancer progression and the underlying mechanisms that enable TGF-β to activate this epithelial plasticity response at transcription, translation, and posttranslational levels. RECENT FINDINGS Smad-mediated transcription regulation is known to activate TGF-β-induced EMT. More recently, novel mechanisms of epigenetic control, alternative splicing, miRNAs, translation control, and posttranslational modifications have been shown to play key roles in the control of EMT. In addition to initiating carcinoma cell invasion, TGF-β-induced EMT can guide cancer cells to de-differentiate and gain cancer stem-cell-like properties. EMT also allows the generation of stromal cells that support and instruct cancer progression. SUMMARY The differentiation plasticity of epithelial cells that mediates TGF-β-induced EMT and reversion from mesenchymal to epithelial phenotype are increasingly seen as integral aspects of cancer progression that contribute to survival and dissemination of cancer cells. Further mechanistic insights under physiological conditions may lead to new therapeutic or prognostic strategies in cancer treatment.
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46
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Singh SR. Gastric cancer stem cells: a novel therapeutic target. Cancer Lett 2013; 338:110-9. [PMID: 23583679 DOI: 10.1016/j.canlet.2013.03.035] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 03/25/2013] [Accepted: 03/30/2013] [Indexed: 12/14/2022]
Abstract
Gastric cancer remains one of the leading causes of global cancer mortality. Multipotent gastric stem cells have been identified in both mouse and human stomachs, and they play an essential role in the self-renewal and homeostasis of gastric mucosa. There are several environmental and genetic factors known to promote gastric cancer. In recent years, numerous in vitro and in vivo studies suggest that gastric cancer may originate from normal stem cells or bone marrow-derived mesenchymal cells, and that gastric tumors contain cancer stem cells. Cancer stem cells are believed to share a common microenvironment with normal niche, which play an important role in gastric cancer and tumor growth. This mini-review presents a brief overview of the recent developments in gastric cancer stem cell research. The knowledge gained by studying cancer stem cells in gastric mucosa will support the development of novel therapeutic strategies for gastric cancer.
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Affiliation(s)
- Shree Ram Singh
- Mouse Cancer Genetics Program, National Cancer Institute, Frederick, MD 21702, USA.
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47
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Transcriptional regulation of breast cancer resistance protein. YI CHUAN = HEREDITAS 2012; 34:1529-36. [DOI: 10.3724/sp.j.1005.2012.01529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Jiang H, Lin X, Liu Y, Gong W, Ma X, Yu Y, Xie Y, Sun X, Feng Y, Janzen V, Chen T. Transformation of epithelial ovarian cancer stemlike cells into mesenchymal lineage via EMT results in cellular heterogeneity and supports tumor engraftment. Mol Med 2012; 18:1197-208. [PMID: 22801793 DOI: 10.2119/molmed.2012.00075] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Accepted: 07/12/2012] [Indexed: 12/21/2022] Open
Abstract
Ovarian cancers are heterogeneous and contain stemlike cells that are able to self-renew and are responsible for sustained tumor growth. Metastasis in the peritoneal cavity occurs more frequently in ovarian cancer than in other malignancies, but the underlying mechanism remains largely unknown. We have identified that ovarian cancer stemlike cells (CSCs), which were defined as side population (SP) cells, were present in patients' ascitic fluid and mesenchymally transformed cell lines, ES-2 and HO-8910PM. SP cells, which were sorted from both cell lines and implanted into immunocompromised mice, were localized to the xenografted tumor boundary. In addition, SP cells exhibited an epithelial phenotype and showed a distinct gene expression profile with reduced expression of cell adhesion molecules (CAMs), indicating that SP cells exert an important role in ovarian cancer progression on the basis of their delicate interaction with the surrounding microenvironment and anatomical localization in tumors. In contrast, non-SP cells exhibited a more mesenchymal phenotype and showed more increased invasive potential than SP cells. This heterogeneity was observed as an endogenous transformation via the epithelial-mesenchymal transition (EMT) process. Inhibition of the EMT process by Snail1 silencing reduced the SP cell frequency, and affected their invasive capacity and engraftment. These findings illustrate the interplay between epithelial ovarian CSCs and the EMT, and exert a link to explain tumor heterogeneity and its necessity for ovarian cancer maintenance, metastasis and progression.
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Affiliation(s)
- Hua Jiang
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
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49
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Gao Y, Liu Z, Feng J, Sun Q, Zhang B, Zheng W, Ma W. Expression pattern of polypeptide N-acetylgalactosaminyltransferase-10 in gastric carcinoma. Oncol Lett 2012; 5:113-116. [PMID: 23255904 DOI: 10.3892/ol.2012.980] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 08/31/2012] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to detect the expression of the pp GalNac-T10 protein in gastric carcinoma and to investigate the role of pp GalNac-T10 in the occurrence and development of gastric cancer tissues. pp GalNac-T10 protein expression was immunohistochemically analyzed in 96 gastric adenocarcinoma tissue samples, and in 88 5-cm adjacent non-tumor gastric mucosa samples, used as controls. pp GalNAc-T10 expression in gastric cancer tissues was higher compared with that in the adjacent non-tumor gastric tissue. pp GalNAc-T10 protein expression had a significant positive correlation with histological type and degree of differentiation of gastric cancer (P<0.05). Expression in diffuse type gastric cancer was notably higher compared with that in intestinal type gastric cancer. Expression in poorly differentiated tumors was markedly higher compared with that in high and mid degree differentiated tumors. pp GalNAc-T10 protein expression was not significantly positively correlated with clinical stage, depth of invasion or lymph node metastasis (P>0.05). pp GalNAc-T10 expression is a useful indicator of tumor differentiation in gastric cancer.
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Affiliation(s)
- Yuan Gao
- Institute of Genetic Engineering, Southern Medical University, Guangzhou
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50
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Abstract
Many drugs that target transforming growth factor-β (TGFβ) signalling have been developed, some of which have reached Phase III clinical trials for a number of disease applications. Preclinical and clinical studies indicate the utility of these agents in fibrosis and oncology, particularly in augmentation of existing cancer therapies, such as radiation and chemotherapy, as well as in tumour vaccines. There are also reports of specialized applications, such as the reduction of vascular symptoms of Marfan syndrome. Here, we consider why the TGFβ signalling pathway is a drug target, the potential clinical applications of TGFβ inhibition, the issues arising with anti-TGFβ therapy and how these might be tackled using personalized approaches to dosing, monitoring of biomarkers as well as brief and/or localized drug-dosing regimens.
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Affiliation(s)
- Rosemary J Akhurst
- Helen Diller Family Comprehensive Cancer Center, University of California at San Francisco, San Francisco, California 94158, USA.
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