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Francipane MG, Bulanin D, Lagasse E. Establishment and Characterization of 5-Fluorouracil-Resistant Human Colorectal Cancer Stem-Like Cells: Tumor Dynamics under Selection Pressure. Int J Mol Sci 2019; 20:ijms20081817. [PMID: 31013771 PMCID: PMC6515384 DOI: 10.3390/ijms20081817] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/21/2019] [Accepted: 04/09/2019] [Indexed: 12/20/2022] Open
Abstract
5-Fluorouracil (5-FU) remains the gold standard of first-line treatment for colorectal cancer (CRC). Although it may initially debulk the tumor mass, relapses frequently occur, indicating the existence of cancer cells that are therapy-resistant and are capable of refueling tumor growth. To identify mechanisms of drug resistance, CRC stem-like cells were subjected to long-term 5-FU selection using either intermittent treatment regimen with the IC50 drug dose or continuous treatment regimen with escalating drug doses. Parental cancer cells were cultivated in parallel. Real-time PCR arrays and bioinformatic tools were used to investigate gene expression changes. We found the first method selected for cancer cells with more aggressive features. We therefore transplanted these cancer cells or parental cells in mice, and again, found that not only did the 5-FU-selected cancer cells generate more aggressive tumors with respect to their parental counterpart, but they also showed a different gene expression pattern as compared to what we had observed in vitro, with ID1 the top upregulated gene. We propose ID1 as a stemness marker pervasively expressed in secondary lesions emerging after completion of chemotherapy.
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Affiliation(s)
- Maria Giovanna Francipane
- McGowan Institute for Regenerative Medicine and Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.
- Ri.MED Foundation, 90133 Palermo, Italy.
| | - Denis Bulanin
- Department of Biomedical Sciences, Nazarbayev University School of Medicine, Astana 010000, Kazakhstan.
| | - Eric Lagasse
- McGowan Institute for Regenerative Medicine and Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.
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2
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Dang SC, Qian XB, Jin W, Cui L, Chen JX, Gu M. G-protein-signaling modulator 2 expression and role in a CD133 + pancreatic cancer stem cell subset. Onco Targets Ther 2019; 12:785-794. [PMID: 30774366 PMCID: PMC6352860 DOI: 10.2147/ott.s187670] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND To investigate the expression and role of G-protein-signaling modulator 2 (GPSM2) in a CD133+ pancreatic stem cell subset. MATERIALS AND METHODS Pancreatic cancer stem cells (PCSCs) from the cell line PANC-1 were sorted into CD133+ and CD133- subsets by flow cytometry. The tumorigenic potential of the subsets was assessed by subcutaneous tumor formation experiments in nude mice. Differential expression of GPSM2 was examined by real-time quantitative-PCR (qPCR) and Western blotting. To silence GPSM2 expression, a shRNA lentiviral vector targeting GPSM2 was constructed and stably transfected into CD133+ PCSCs. The inhibitory efficiency of the GPSM2 gene was verified by qPCR and Western blotting. The proliferation, colony formation, and migration abilities of the transfected CD133+ pancreatic cancer cells were assessed by MTT, soft agar colony formation, and Transwell assays. RESULTS CD133+ and CD133- cell subsets were successfully isolated from PANC-1 cells. The CD133+ subset subcutaneously formed tumors in nude mice that were significantly bigger (343.05±57.59 mm3 vs 176.86±32.58 mm3, P<0.01) and denser (4.13±0.37 g vs 1.07±0.21 g, P<0.01) than those of the CD133- group. The GPSM2 mRNA and protein expression was significantly higher in CD133+ cells than in CD133- cells. Stable downregulation of GPSM2 expression reduced the proliferation, colony formation, and migration abilities of CD133+ PANC-1 cells (P<0.05). CONCLUSION The CD133+PANC-1 cells have obvious stem cell characteristics and increased GPSM2 expression. Downregulation of GPSM2 significantly reduces the proliferation and migration ability of the cells. Therefore, GPSM2 may provide an important target for regulating PCSCs.
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Affiliation(s)
- Sheng-Chun Dang
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, People's Republic of China
| | - Xiao-Bao Qian
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, People's Republic of China
| | - Wei Jin
- Department of Obstetrics and Gynecology, ChangShu No. 2 People's Hospital, Changshu, Jiangsu 215500, People's Republic of China
| | - Lei Cui
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, People's Republic of China
| | - Ji-Xiang Chen
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, People's Republic of China
| | - Min Gu
- Department of Oncology, Zhenjiang Hospital of Traditional Chinese and Western Medicine, Zhenjiang, Jiangsu 212001, People's Republic of China,
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3
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Aghaalikhani N, Rashtchizadeh N, Shadpour P, Allameh A, Mahmoodi M. Cancer stem cells as a therapeutic target in bladder cancer. J Cell Physiol 2018; 234:3197-3206. [PMID: 30471107 DOI: 10.1002/jcp.26916] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 06/13/2018] [Indexed: 12/13/2022]
Abstract
Bladder cancer is one of the most prevalent genitourinary cancers responsible for about 150,000 deaths per year worldwide. Currently, several treatments, such as endoscopic and open surgery, appended by local or systemic immunotherapy, chemotherapy, and radiotherapy are used to treat this malignancy. However, the differences in treatment outcome among patients suffering from bladder cancer are considered as one of the important challenges. In recent years, cancer stem cells, representing a population of undifferentiated cells with stem-cell like properties, have been eyed as a major culprit for the high recurrence rate in superficial papillary bladder cancer. Cancer stem cells have been reported to be resistant to conventional treatments, such as chemotherapy, radiation, and immunotherapy, which induce selective pressure on tumoral populations resulting in selection and growth of the resistant cells. Therefore, targeting the therapeutic aspects of cancer stem cells in bladder cancer may be promising. In this study, we briefly discuss the biology of bladder cancer and then address the possible relationship between molecular biology of bladder cancer and cancer stem cells. Subsequently, the mechanisms of resistance applied by cancer stem cells against the conventional therapeutic tools, especially chemotherapy, are discussed. Moreover, by emphasizing the biomarkers described for cancer stem cells in bladder cancer, we have provided, described, and proposed targets on cancer stem cells for therapeutic interventions and, finally, reviewed some immunotargeting strategies against bladder cancer stem cells.
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Affiliation(s)
- Nazi Aghaalikhani
- Department of Clinical Biochemistry and Laboratory Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nadereh Rashtchizadeh
- Department of Clinical Biochemistry and Laboratory Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pejman Shadpour
- Hasheminejad Kidney Centre (HKC), Hospital Management Research Centre (HMRC), University of Medical Sciences (IUMS), Tehran, Iran
| | - Abdolamir Allameh
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Marzieh Mahmoodi
- Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
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4
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Mei D, Lv B, Chen B, Xiao S, Jiang J, Xie Y, Jiang L. All-trans retinoic acid suppresses malignant characteristics of CD133-positive thyroid cancer stem cells and induces apoptosis. PLoS One 2017; 12:e0182835. [PMID: 28817605 PMCID: PMC5560547 DOI: 10.1371/journal.pone.0182835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 07/25/2017] [Indexed: 12/27/2022] Open
Abstract
Recently, diagnoses of radioiodine-refractory differentiated thyroid cancer (RAI-R DTC) have become more common; prognosis is poor. It has been suggested that cancer stem cells account for radiotherapy resistance. By flow cytometry, different expression percents of CD133 and OCT4 in thyroid cancer cell lines were detected. By real-time quantitative PCR, different mRNA expression of CD133, OCT4, GLUT1, thyroglobulin (TG), thyroperoxidase (TPO) and sodium iodine symporter (NIS) was analyzed; the localization of CD133, OCT4, and NIS expression was examined using immunofluorescence confocal microscopy. Different expression of CD133, OCT4, and NIS in 21 human thyroid cancer and nodule tissues was investigated using immunohistochemistry. CD133-positive cells were isolated by magnetic sorting. Stronger colony formation ability of CD133-positive and weaker ability of CD133-negative cells in vivo were examined by colony formation. The effects of all-trans retinoic acid (ATRA) on CD133-positive cells in vivo were explored with Cell Counting Kit-8, colony formation, apoptosis, cell cycle, and ethynyl deoxyuridine assays. The ARO cell line and RAI-R DTC tissue specimens had more CD133-positive cells. NIS expression was significantly lower in RAI-R DTC tissue compared to radioiodine-sensitive DTC (RAI-DTC) tissue and specimens from patients with thyroid nodule. ATRA inhibited the stem cell characteristics of CD133-positive cells and induced CD133-positive cell differentiation to CD133-negative cells, and promoted CD133-positive cell apoptosis.
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Affiliation(s)
- Dan Mei
- Department of Clinical Medicine, School of Medicine, Shandong University, Jinan, China
| | - Bin Lv
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
- * E-mail: (JL); (LB)
| | - Bo Chen
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Shan Xiao
- Department of Clinical Medicine, School of Medicine, Shandong University, Jinan, China
| | - Jie Jiang
- Department of Clinical Medicine, School of Medicine, Shandong University, Jinan, China
| | - Yan Xie
- Department of Clinical Medicine, School of Medicine, Shandong University, Jinan, China
| | - Ling Jiang
- Department of Endocrine and Metabolism, Qilu Hospital, Shandong University, Jinan, China
- * E-mail: (JL); (LB)
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5
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Naik PP, Das DN, Panda PK, Mukhopadhyay S, Sinha N, Praharaj PP, Agarwal R, Bhutia SK. Implications of cancer stem cells in developing therapeutic resistance in oral cancer. Oral Oncol 2016; 62:122-135. [PMID: 27865365 DOI: 10.1016/j.oraloncology.2016.10.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 10/05/2016] [Accepted: 10/15/2016] [Indexed: 12/13/2022]
Abstract
Conventional therapeutics are often frequented with recurrences, refraction and regimen resistance in oral cavity cancers which are predominantly manifested by cancer stem cells (CSCs). During oncoevolution, cancer cells may undergo structural and functional reprogramming wherein they evolve as highly tolerant CSC phenotypes with greater survival advantages. The CSCs possess inherent and exclusive properties including self-renewal, hierarchical differentiation, and tumorigenicity that serve as the basis of chemo-radio-resistance in oral cancer. However, the key mechanisms underlying the CSC-mediated therapy resistance need to be further elucidated. A spectrum of dysfunctional cellular pathways including the developmental signaling, apoptosis, autophagy, cell cycle regulation, DNA damage responses and epigenetic regulations protect the CSCs from conventional therapies. Moreover, tumor niche shelters CSCs and creates an immunosuppressive environment favoring the survival of CSCs. Maintenance of lower redox status, epithelial-to-mesenchymal transition (EMT), metabolic reprogramming and altered drug responses are the accessory features that aid in the process of chemo-radio-resistance in oral CSCs. This review deals with the functional and molecular basis of cancer cell pluripotency-associated resistance highlighting the abrupt fundamental cellular processes; targeting these events may hold a great promise in the successful treatment of oral cancer.
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Affiliation(s)
- Prajna Paramita Naik
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Durgesh Nandini Das
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Prashanta Kumar Panda
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Subhadip Mukhopadhyay
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Niharika Sinha
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | | | - Rajesh Agarwal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO, United States; University of Colorado Cancer Center, University of Colorado Denver, Aurora, CO, United States.
| | - Sujit Kumar Bhutia
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India.
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6
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Ginn KF, Fangman B, Terai K, Wise A, Ziazadeh D, Shah K, Gartrell R, Ricke B, Kimura K, Mathur S, Borrego-Diaz E, Farassati F. RalA is overactivated in medulloblastoma. J Neurooncol 2016; 130:99-110. [PMID: 27566179 DOI: 10.1007/s11060-016-2236-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 07/21/2016] [Indexed: 12/18/2022]
Abstract
Medulloblastoma (MDB) represents a major form of malignant brain tumors in the pediatric population. A vast spectrum of research on MDB has advanced our understanding of the underlying mechanism, however, a significant need still exists to develop novel therapeutics on the basis of gaining new knowledge about the characteristics of cell signaling networks involved. The Ras signaling pathway, one of the most important proto-oncogenic pathways involved in human cancers, has been shown to be involved in the development of neurological malignancies. We have studied an important effector down-stream of Ras, namely RalA (Ras-Like), for the first time and revealed overactivation of RalA in MDB. Affinity precipitation analysis of active RalA (RalA-GTP) in eight MDB cell lines (DAOY, RES256, RES262, UW228-1, UW426, UW473, D283 and D425) revealed that the majority contained elevated levels of active RalA (RalA-GTP) as compared with fetal cerebellar tissue as a normal control. Additionally, total RalA levels were shown to be elevated in 20 MDB patient samples as compared to normal brain tissue. The overall expression of RalA, however, was comparable in cancerous and normal samples. Other important effectors of RalA pathway including RalA binding protein-1 (RalBP1) and protein phosphatase A (PP2A) down-stream of Ral and Aurora kinase A (AKA) as an upstream RalA activator were also investigated in MDB. Considering the lack of specific inhibitors for RalA, we used gene specific silencing in order to inhibit RalA expression. Using a lentivirus expressing anti-RalA shRNA we successfully inhibited RalA expression in MDB and observed a significant reduction in proliferation and invasiveness. Similar results were observed using inhibitors of AKA and geranyl-geranyl transferase (non-specific inhibitors of RalA signaling) in terms of loss of in vivo tumorigenicity in heterotopic nude mouse model. Finally, once tested in cells expressing CD133 (a marker for MDB cancer stem cells), higher levels of RalA activation was observed. These data not only bring RalA to light as an important contributor to the malignant phenotype of MDB but introduces this pathway as a novel target in the treatment of this malignancy.
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Affiliation(s)
- Kevin F Ginn
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA.,Division of Hematology and Oncology, Children's Mercy Hospital and Clinics, Kansas City, MO, USA
| | - Ben Fangman
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Kaoru Terai
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Amanda Wise
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Daniel Ziazadeh
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Kushal Shah
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Robyn Gartrell
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Brandon Ricke
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Kyle Kimura
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Sharad Mathur
- Research Service (151), Kansas City Veteran Affairs Medical Center & Midwest Biomedical Research Foundation-Saint Luke's Marion Bloch Brain Tumor Research Program, 4801 E Linwood Blvd, F5-123, Kansas City, MO, 64128, USA
| | - Emma Borrego-Diaz
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA
| | - Faris Farassati
- Molecular Medicine Laboratory, Department of Medicine, University of Kansas Medical School, Kansas City, KS, USA. .,Research Service (151), Kansas City Veteran Affairs Medical Center & Midwest Biomedical Research Foundation-Saint Luke's Marion Bloch Brain Tumor Research Program, 4801 E Linwood Blvd, F5-123, Kansas City, MO, 64128, USA.
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7
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Francipane MG, Lagasse E. Towards Organs on Demand: Breakthroughs and Challenges in Models of Organogenesis. CURRENT PATHOBIOLOGY REPORTS 2016; 4:77-85. [PMID: 28979828 DOI: 10.1007/s40139-016-0111-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In recent years, functional three-dimensional (3D) tissue generation in vitro has been significantly advanced by tissue-engineering methods, achieving better reproduction of complex native organs compared to conventional culture systems. This review will discuss traditional 3D cell culture techniques as well as newly developed technology platforms. These recent techniques provide new possibilities in the creation of human body parts and provide more accurate predictions of tissue response to drug and chemical challenges. Given the rapid advancement in the human induced pluripotent stem cell (iPSC) field, these platforms also hold great promise in the development of patient-specific, transplantable tissues and organs on demand.
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Affiliation(s)
- Maria Giovanna Francipane
- McGowan Institute for Regenerative Medicine, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
- Ri.MED Foundation, 90133 Palermo, Italy
| | - Eric Lagasse
- McGowan Institute for Regenerative Medicine, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
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8
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Eckerdt F, Alvarez A, Bell J, Arvanitis C, Iqbal A, Arslan AD, Hu B, Cheng SY, Goldman S, Platanias LC. A simple, low-cost staining method for rapid-throughput analysis of tumor spheroids. Biotechniques 2016; 60:43-6. [PMID: 26757811 PMCID: PMC4772731 DOI: 10.2144/000114372] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 09/23/2015] [Indexed: 01/17/2023] Open
Abstract
Tumor spheroids are becoming an important tool for the investigation of cancer stem cell (CSC) function in tumors; thus, low-cost and high-throughput methods for drug screening of tumor spheroids are needed. Using neurospheres as non-adherent three-dimensional (3-D) cultures, we developed a simple, low-cost acridine orange (AO)-based method that allows for rapid analysis of live neurospheres by fluorescence microscopy in a 96-well format. This assay measures the cross-section area of a spheroid, which corresponds to cell viability. Our novel method allows rapid screening of a panel of anti-proliferative drugs to assess inhibitory effects on the growth of cancer stem cells in 3-D cultures.
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Affiliation(s)
- Frank Eckerdt
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology- Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Angel Alvarez
- Department of Neurology, Robert H. Lurie Comprehensive Cancer Center, Northwestern Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Jonathan Bell
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology- Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Constadina Arvanitis
- Center for Advanced Microscopy and Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Asneha Iqbal
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology- Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
- Division of Hematology and Oncology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL
| | - Ahmet D. Arslan
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology- Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Bo Hu
- Department of Neurology, Robert H. Lurie Comprehensive Cancer Center, Northwestern Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Shi-Yuan Cheng
- Department of Neurology, Robert H. Lurie Comprehensive Cancer Center, Northwestern Brain Tumor Institute, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Stewart Goldman
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology- Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
- Division of Hematology and Oncology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL
| | - Leonidas C. Platanias
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology- Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
- Department of Medicine, Jesse Brown VA Medical Center, Chicago, IL
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9
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Francipane MG, Lagasse E. Therapeutic potential of mTOR inhibitors for targeting cancer stem cells. Br J Clin Pharmacol 2015; 82:1180-1188. [PMID: 26609914 DOI: 10.1111/bcp.12844] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/20/2015] [Accepted: 11/23/2015] [Indexed: 12/18/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) pathway is aberrantly activated in many cancer types. As the intricate network of regulatory mechanisms controlling mTOR activity is uncovered, more refined drugs are designed and tested in clinical trials. While first generation mTOR inhibitors have failed to show clinical efficacy due partly to the feedback relief of oncogenetic circuits, newly developed inhibitors show greater promise as anti-cancer agents. An effective drug must defeat the cancer stem cells (CSCs) while sparing the normal stem cells. Due to its opposing role on normal and malignant stem cells, mTOR lends itself very well as a therapeutic target. Indeed, a preferential inhibitory effect on CSCs has already been shown for some mTOR inhibitors. These results provide a compelling rationale for the clinical development of mTOR-targeted therapies.
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Affiliation(s)
- Maria Giovanna Francipane
- McGowan Institute for Regenerative Medicine, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA. .,Ri.MED Foundation, 90133, Palermo, Italy.
| | - Eric Lagasse
- McGowan Institute for Regenerative Medicine, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA
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10
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Islam F, Gopalan V, Wahab R, Smith RA, Lam AKY. Cancer stem cells in oesophageal squamous cell carcinoma: Identification, prognostic and treatment perspectives. Crit Rev Oncol Hematol 2015; 96:9-19. [PMID: 25913844 DOI: 10.1016/j.critrevonc.2015.04.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 03/03/2015] [Accepted: 04/07/2015] [Indexed: 02/07/2023] Open
Abstract
Cancer stem cells (CSCs) are a vital subpopulation of cells to target for the treatment of cancers. In oesophageal squamous cell carcinoma (ESCC), there are several markers such as CD44, ALDH, Pygo2, MAML1, Twist1, Musashi1, Side population (SP), CD271 and CD90 that have been proposed to identify the cancer stem cells in individual cancer masses. It has also been demonstrated that stem cell markers like ALDH1, HIWI, Oct3/4, ABCG2, SOX2, SALL4, BMI-1, NANOG, CD133 and podoplanin are associated with patient's prognosis, pathological stages, cancer recurrence and therapy resistance. Finding new cancer stem cell targets or designing drugs to manipulate the known molecular targets in CSCs could be useful for improvements in clinical outcomes of the disease. To conclude, data suggest that CSCs in oesophageal squamous cell carcinoma are related to resistance to therapy and poor prognosis of patients with ESCC. Therefore, innovative insights into CSC biology and CSC-targeted therapies will help to achieve more effective management of patients with oesophageal squamous cell carcinoma.
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Affiliation(s)
- Farhadul Islam
- Cancer Molecular Pathology, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Vinod Gopalan
- Cancer Molecular Pathology, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Riajul Wahab
- Cancer Molecular Pathology, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Robert A Smith
- Cancer Molecular Pathology, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Alfred K-Y Lam
- Cancer Molecular Pathology, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia.
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11
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Cramer JM, Thompson T, Geskin A, LaFramboise W, Lagasse E. Distinct human stem cell populations in small and large intestine. PLoS One 2015; 10:e0118792. [PMID: 25751518 PMCID: PMC4353627 DOI: 10.1371/journal.pone.0118792] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 01/06/2015] [Indexed: 12/22/2022] Open
Abstract
The intestine is composed of an epithelial layer containing rapidly proliferating cells that mature into two regions, the small and the large intestine. Although previous studies have identified stem cells as the cell-of-origin for intestinal epithelial cells, no studies have directly compared stem cells derived from these anatomically distinct regions. Here, we examine intrinsic differences between primary epithelial cells isolated from human fetal small and large intestine, after in vitro expansion, using the Wnt agonist R-spondin 2. We utilized flow cytometry, fluorescence-activated cell sorting, gene expression analysis and a three-dimensional in vitro differentiation assay to characterize their stem cell properties. We identified stem cell markers that separate subpopulations of colony-forming cells in the small and large intestine and revealed important differences in differentiation, proliferation and disease pathways using gene expression analysis. Single cells from small and large intestine cultures formed organoids that reflect the distinct cellular hierarchy found in vivo and respond differently to identical exogenous cues. Our characterization identified numerous differences between small and large intestine epithelial stem cells suggesting possible connections to intestinal disease.
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Affiliation(s)
- Julie M. Cramer
- Department of Pathology, University of Pittsburgh School of Medicine, 200 Lothrop Street, Pittsburgh, PA, 15261, United States of America
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA, 15219, United States of America
| | - Timothy Thompson
- Department of Bioengineering, University of Pittsburgh, 3700 O'Hara St, Pittsburgh, PA, 15261, United States of America
| | - Albert Geskin
- Department of Pathology, University of Pittsburgh, Shadyside Hospital, West Wing, WG 02.11, 5230 Center Avenue, Pittsburgh, PA 15232, United States of America
| | - William LaFramboise
- Department of Pathology, University of Pittsburgh, Shadyside Hospital, West Wing, WG 02.11, 5230 Center Avenue, Pittsburgh, PA 15232, United States of America
| | - Eric Lagasse
- Department of Pathology, University of Pittsburgh School of Medicine, 200 Lothrop Street, Pittsburgh, PA, 15261, United States of America
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA, 15219, United States of America
- * E-mail:
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12
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Islam F, Qiao B, Smith RA, Gopalan V, Lam AKY. Cancer stem cell: fundamental experimental pathological concepts and updates. Exp Mol Pathol 2015; 98:184-91. [PMID: 25659759 DOI: 10.1016/j.yexmp.2015.02.002] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 02/04/2015] [Indexed: 01/01/2023]
Abstract
Cancer stem cells (CSCs) are a subset of cancer cells which play a key role in predicting the biological aggressiveness of cancer due to its ability of self-renewal and multi-lineage differentiation (stemness). The CSC model is a dynamic one with a functional subpopulation of cancer cells rather than a stable cell population responsible for tumour regeneration. Hypotheses regarding the origins of CSCs include (1) malignant transformation of normal stem cells; (2) mature cancer cell de-differentiation with epithelial-mesenchymal transition and (3) induced pluripotent cancer cells. Surprisingly, the cancer stem cell hypothesis originated in the late nineteenth century and the existence of haematopoietic stem cells was demonstrated a century later, demonstrating that the concept was possible. In the last decade, CSCs have been identified and isolated in different cancers. The hallmark traits of CSCs include their heterogeneity, interaction with microenvironments and plasticity. Understanding these basic concepts of CSCs is important for translational applications using CSCs in the management of patients with cancer.
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Affiliation(s)
- Farhadul Islam
- Cancer Molecular Pathology, School of Medicine and Griffith Health Institute, Griffith University, Gold Coast, Queensland, Australia
| | - Bin Qiao
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Robert A Smith
- Cancer Molecular Pathology, School of Medicine and Griffith Health Institute, Griffith University, Gold Coast, Queensland, Australia; Genomics Research Centre, Institute of Health and Biomedical Innovation, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Vinod Gopalan
- Cancer Molecular Pathology, School of Medicine and Griffith Health Institute, Griffith University, Gold Coast, Queensland, Australia
| | - Alfred K-Y Lam
- Cancer Molecular Pathology, School of Medicine and Griffith Health Institute, Griffith University, Gold Coast, Queensland, Australia; Department of Pathology, Gold Coast University Hospital, Gold Coast, Queensland, Australia.
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Miao W, Liu X, Wang H, Fan Y, Lian S, Yang X, Wang X, Guo G, Li Q, Wang S. p53 upregulated modulator of apoptosis sensitizes drug-resistant U251 glioblastoma stem cells to temozolomide through enhanced apoptosis. Mol Med Rep 2015; 11:4165-73. [PMID: 25625235 PMCID: PMC4394929 DOI: 10.3892/mmr.2015.3255] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 11/12/2014] [Indexed: 12/14/2022] Open
Abstract
Malignant glioma is a highly aggressive brain tumor with a poor prognosis. Chemotherapy has been observed to prolong overall survival rate and temozolomide (TMZ), a promising chemotherapeutic agent for treating glioblastoma (GBM), possesses the most effective clinical activity at present, although drug resistance limits its clinical outcome. Growing evidence supports the concept that initial and recurrent GBM may derive from glioblastoma stem cells, which may be responsible for drug resistance. However, the molecular mechanisms underlying this resistance remain to be elucidated. In the present study, a TMZ‑resistant GBM cell line, U251R, was developed and subsequently divided into two subpopulations according to the CD133 immunophenotype. No significant difference was identified in the expression of O6‑methylguanine‑DNA‑methyltransferase (MGMT) between CD133+ U251R cells and CD133‑ U251R cells, whereas the CD133+ cell population was more resistant to TMZ‑induced growth inhibition and cell death. TMZ achieves its cytotoxic effect by inducing DNA lesions and p53 upregulated modulator of apoptosis (PUMA) is an essential mediator of DNA damage‑induced apoptosis independently of p53 status. Therefore, whether PUMA effectively enhances growth suppression and induces apoptosis when combined with TMZ was investigated. Consequently, it was found that adenoviruses expressing wild‑type‑PUMA not only lead to the apoptosis of CD133+ U251R cells alone, but also significantly increase their sensitivity toward TMZ by elevating the Bcl‑2‑associated X protein/B‑cell lymphoma‑2 ratio without alterations in MGMT expression. Therefore, PUMA may be a suitable target for intervention to improve the therapeutic efficacy of TMZ.
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Affiliation(s)
- Wang Miao
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xiaodong Liu
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hongqin Wang
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Yimin Fan
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Shizhong Lian
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xin Yang
- Department of Radiotherapy, Shanxi Dayi Hospital, Taiyuan, Shanxi 030032, P.R. China
| | - Xinxing Wang
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Geng Guo
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Qichao Li
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Sifei Wang
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
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14
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Xiang D, Shigdar S, Qiao G, Wang T, Kouzani AZ, Zhou SF, Kong L, Li Y, Pu C, Duan W. Nucleic acid aptamer-guided cancer therapeutics and diagnostics: the next generation of cancer medicine. Am J Cancer Res 2015; 5:23-42. [PMID: 25553096 PMCID: PMC4265746 DOI: 10.7150/thno.10202] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/01/2014] [Indexed: 12/29/2022] Open
Abstract
Conventional anticancer therapies, such as chemo- and/or radio-therapy are often unable to completely eradicate cancers due to abnormal tumor microenvironment, as well as increased drug/radiation resistance. More effective therapeutic strategies for overcoming these obstacles are urgently in demand. Aptamers, as chemical antibodies that bind to targets with high affinity and specificity, are a promising new and novel agent for both cancer diagnostic and therapeutic applications. Aptamer-based cancer cell targeting facilitates the development of active targeting in which aptamer-mediated drug delivery could provide promising anticancer outcomes. This review is to update the current progress of aptamer-based cancer diagnosis and aptamer-mediated active targeting for cancer therapy in vivo, exploring the potential of this novel form of targeted cancer therapy.
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Abstract
The mammalian target of rapamycin (mTOR) has emerged as a potential target for drug development, particularly due to the fact that it plays such a crucial role in cancer biology. In addition, next-generation mTOR inhibitors have become available, marking an exciting new phase in mTOR-based therapy. However, the verdict on their therapeutic efectiveness remains unclear. Here we review phosphatidylinositol-3-kinase (PI3K)/Akt/mTOR signaling as one of the primary mechanisms for sustaining tumor outgrowth and metastasis, recent advances in the development of mTOR inhibitors, and current studies addressing mTOR activation/inhibition in colorectal cancer (CRC). We will also discuss our recent comparative study of diferent mTOR inhibitors in a population of colon cancer stem cells (CSCs), and current major challenges for achieving individualized drug therapy using kinase inhibitors.
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16
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Tang M, Hou YL, Kang QQ, Chen XY, Duan LQ, Shu J, Li SL, Hu XL, Peng ZP. All-trans-retinoic acid promotes iodine uptake via up- regulating the sodium iodide symporter in medullary thyroid cancer stem cells. Asian Pac J Cancer Prev 2014; 15:1859-62. [PMID: 24641421 DOI: 10.7314/apjcp.2014.15.4.1859] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Recently, the main therapy of medullary thyroid cancer (MTC) is surgical, but by which way there is a poor prognosis with a mean survival of only 5 years. In some cases, some researchers found that it is the medullary thyroid cancer stem cells (MTCSCs) that cause metastasis and recurrence. This study aimed to eradicate MTCSCs through administration of all-trans-retinoic acid (ATRA). Here we demonstrate that MTCSCs possess stem- like properties in serum-free medium. The ABCG2, OCT4 and sodium iodide symporter (NIS) were changed by ATRA. Additionally, we found that ATRA can increase the expression of NIS in vivo. All the data suggested that ATRA could increase the iodine uptake of MTCSCs through NIS.
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Affiliation(s)
- Min Tang
- Department of Radiation Medicine, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China E-mail :
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17
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Francipane MG, Lagasse E. Selective targeting of human colon cancer stem-like cells by the mTOR inhibitor Torin-1. Oncotarget 2014; 4:1948-62. [PMID: 24185040 PMCID: PMC3875761 DOI: 10.18632/oncotarget.1310] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Metastatic colorectal cancer (CRC) is incurable for most patients. Since mammalian target of rapamycin (mTOR) has been suggested as a crucial modulator of tumor biology, we aimed at evaluating the effectiveness of mTOR targeting for CRC therapy. To this purpose, we analyzed mTOR expression and the effect of mTOR inhibition in cancer stem-like cells isolated from three human metastatic CRCs (CoCSCs). CoCSCs exhibited a strong mTOR complex 2 (mTORC2) expression, and a rare expression of mTOR complex 1 (mTORC1). This latter correlated with differentiation, being expressed in CoCSC-derived xenografts. We indicate Serum/glucocorticoid-regulated kinase 1 (SGK1) as the possible main mTORC2 effector in CoCSCs, as highlighted by the negative effect on cancer properties following its knockdown. mTOR inhibitors affected CoCSCs differently, resulting in proliferation, autophagy as well as apoptosis induction. The apoptosis-inducing mTOR inhibitor Torin-1 hindered growth, motility, invasion, and survival of CoCSCs in vitro, and suppressed tumor growth in vivo with a concomitant reduction in vessel formation. Torin-1 also affected the expression of markers for cell proliferation, angio-/lympho-genesis, and stemness in vivo, including Ki67, DLL1, DLL4, Notch, Lgr5, and CD44. Importantly, Torin-1 did not affect the survival of normal colon stem cells in vivo, suggesting its selectivity towards cancer cells. Thus, we propose Torin-1 as a powerful drug candidate for metastatic CRC therapy.
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Affiliation(s)
- Maria Giovanna Francipane
- McGowan Institute for Regenerative Medicine, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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18
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Gammaitoni L, Leuci V, Mesiano G, Giraudo L, Todorovic M, Carnevale-Schianca F, Aglietta M, Sangiolo D. Immunotherapy of cancer stem cells in solid tumors: initial findings and future prospective. Expert Opin Biol Ther 2014; 14:1259-70. [PMID: 24835841 DOI: 10.1517/14712598.2014.918099] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Conventional chemotherapies seemed to have reached a therapeutic plateau in the treatment of solid tumors and many metastatic diseases are still incurable. Events of chemo-resistance and relapses appear to be sustained by a subset of putative cancer stem cells (CSCs). New anticancer strategies need to face this new challenge exploring their efficacy against CSCs. Immunotherapy has raised enthusiasms in cancer therapy and its potential against CSCs is an intriguing field of research. AREAS COVERED In this work we reviewed the immunotherapy approaches directed against CSCs in solid tumors. We schematically divided adaptive immunotherapy strategies, mainly based on dendritic cell-vaccination, and strategies exploiting MHC-unrestricted effectors like natural killer cells, γδ T lymphocytes and cytokine-induced killer cells. Findings, strength and limitations of these models are discussed and compared highlighting their potential clinical relevance. EXPERT OPINION The important biologic role and clinical relevance of CSCs introduced a 'noble target' for immunotherapy and cancer treatments in general. Initial evidences suggest that CSCs may be susceptible to various types of immunotherapy attacks, overcoming their chemo-resistance. Investigation of important safety issues, based on shared features with 'normal' stem cells, along with intriguing synergisms with modulatory agents are open challenges for the next future and effective clinical translation.
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19
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Ezzeldin M, Borrego-Diaz E, Taha M, Esfandyari T, Wise AL, Peng W, Rouyanian A, Asvadi Kermani A, Soleimani M, Patrad E, Lialyte K, Wang K, Williamson S, Abdulkarim B, Olyaee M, Farassati F. RalA signaling pathway as a therapeutic target in hepatocellular carcinoma (HCC). Mol Oncol 2014; 8:1043-53. [PMID: 24785097 DOI: 10.1016/j.molonc.2014.03.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/12/2014] [Accepted: 03/24/2014] [Indexed: 12/23/2022] Open
Abstract
Ral (Ras like) leads an important proto-oncogenic signaling pathway down-stream of Ras. In this work, RalA was found to be significantly overactivated in hepatocellular carcinoma (HCC) cells and tissues as compared to non-malignant samples. Other elements of RalA pathway such as RalBP1 and RalGDS were also expressed at higher levels in malignant samples. Inhibition of RalA by gene-specific silencing caused a robust decrease in the viability and invasiveness of HCC cells. Additionally, the use of geranyl-geranyl transferase inhibitor (GGTI, an inhibitor of Ral activation) and Aurora kinase inhibitor II resulted in a significant decrease in the proliferation of HCC cells. Furthermore, RalA activation was found to be at a higher level of activation in HCC stem cells that express CD133. Transgenic mouse model for HCC (FXR-Knockout) also revealed an elevated level of RalA-GTP in the liver tumors as compared to background animals. Finally, subcutaneous mouse model for HCC confirmed effectiveness of inhibition of aurora kinase/RalA pathway in reducing the tumorigenesis of HCC cells in vivo. In conclusion, RalA overactivation is an important determinant of malignant phenotype in differentiated and stem cells of HCC and can be considered as a target for therapeutic intervention.
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Affiliation(s)
- Mohamad Ezzeldin
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Emma Borrego-Diaz
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Mohammad Taha
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Tuba Esfandyari
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Amanda L Wise
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Warner Peng
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Alex Rouyanian
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Atabak Asvadi Kermani
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Mina Soleimani
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Elham Patrad
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Kristina Lialyte
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Kun Wang
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Stephen Williamson
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Bashar Abdulkarim
- The University of Kansas Medical Center, Department of Surgery, Kansas City, KS, USA
| | - Mojtaba Olyaee
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA
| | - Faris Farassati
- The University of Kansas Medical School, Divisions of Gastroenterology, Hepatology and Motility and Hematology/Oncology, Molecular Medicine Laboratory, Kansas City, KS, USA.
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20
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Whitsett TG, Mathews IT, Cardone MH, Lena RJ, Pierceall WE, Bittner M, Sima C, LoBello J, Weiss GJ, Tran NL. Mcl-1 mediates TWEAK/Fn14-induced non-small cell lung cancer survival and therapeutic response. Mol Cancer Res 2014; 12:550-9. [PMID: 24469836 DOI: 10.1158/1541-7786.mcr-13-0458] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
UNLABELLED Insensitivity to standard clinical interventions, including chemotherapy, radiotherapy, and tyrosine kinase inhibitor (TKI) treatment, remains a substantial hindrance towards improving the prognosis of patients with non-small cell lung cancer (NSCLC). The molecular mechanism of therapeutic resistance remains poorly understood. The TNF-like weak inducer of apoptosis (TWEAK)-FGF-inducible 14 (TNFRSF12A/Fn14) signaling axis is known to promote cancer cell survival via NF-κB activation and the upregulation of prosurvival Bcl-2 family members. Here, a role was determined for TWEAK-Fn14 prosurvival signaling in NSCLC through the upregulation of myeloid cell leukemia sequence 1 (MCL1/Mcl-1). Mcl-1 expression significantly correlated with Fn14 expression, advanced NSCLC tumor stage, and poor patient prognosis in human primary NSCLC tumors. TWEAK stimulation of NSCLC cells induced NF-κB-dependent Mcl-1 protein expression and conferred Mcl-1-dependent chemo- and radioresistance. Depletion of Mcl-1 via siRNA or pharmacologic inhibition of Mcl-1, using EU-5148, sensitized TWEAK-treated NSCLC cells to cisplatin- or radiation-mediated inhibition of cell survival. Moreover, EU-5148 inhibited cell survival across a panel of NSCLC cell lines. In contrast, inhibition of Bcl-2/Bcl-xL function had minimal effect on suppressing TWEAK-induced cell survival. Collectively, these results position TWEAK-Fn14 signaling through Mcl-1 as a significant mechanism for NSCLC tumor cell survival and open new therapeutic avenues to abrogate the high mortality rate seen in NSCLC. IMPLICATIONS The TWEAK-Fn14 signaling axis enhances lung cancer cell survival and therapeutic resistance through Mcl-1, positioning both TWEAK-Fn14 and Mcl-1 as therapeutic opportunities in lung cancer.
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Affiliation(s)
- Timothy G Whitsett
- Translational Genomics Research Institute, 445 N. Fifth St., Suite 400, Phoenix, AZ 85004.
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21
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O'Connor ML, Xiang D, Shigdar S, Macdonald J, Li Y, Wang T, Pu C, Wang Z, Qiao L, Duan W. Cancer stem cells: A contentious hypothesis now moving forward. Cancer Lett 2013; 344:180-7. [PMID: 24333726 DOI: 10.1016/j.canlet.2013.11.012] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/11/2013] [Accepted: 11/19/2013] [Indexed: 02/07/2023]
Abstract
Cancer stem cells are a progressive concept to account for the cell biological nature of cancer. Despite the controversies regarding the cancer stem cell model, it has the potential to provide a foundation for new innovative treatment targeting the roots of cancer. The last two years have witnessed exceptional progress in cancer stem cell research, in particular on solid tumours, which holds promise for improved treatment outcomes. Here, we review recent advances in cancer stem cell research, discuss challenges in the field and explore future strategies and opportunities in cancer stem cell studies to overcome resistance to chemotherapy.
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Affiliation(s)
- Michael L O'Connor
- School of Medicine, Deakin University, Pigdons Road, Waurn Ponds, Victoria 3217, Australia
| | - Dongxi Xiang
- School of Medicine, Deakin University, Pigdons Road, Waurn Ponds, Victoria 3217, Australia
| | - Sarah Shigdar
- School of Medicine, Deakin University, Pigdons Road, Waurn Ponds, Victoria 3217, Australia
| | - Joanna Macdonald
- School of Medicine, Deakin University, Pigdons Road, Waurn Ponds, Victoria 3217, Australia
| | - Yong Li
- Cancer Care Centre, St. George Hospital, and St. George Clinical School, Faculty of Medicine, University of New South Wales, Kensington, NSW 2052, Australia
| | - Tao Wang
- School of Medicine, Deakin University, Pigdons Road, Waurn Ponds, Victoria 3217, Australia
| | - Chunwen Pu
- Dalian Sixth People's Hospital, Dalian 116033, China
| | - Zhidong Wang
- Dalian Sixth People's Hospital, Dalian 116033, China
| | - Liang Qiao
- Storr Liver Unit, Westmead Millennium Institute, The University of Sydney at the Westmead Hospital, Westmead, NSW 2145, Australia.
| | - Wei Duan
- School of Medicine, Deakin University, Pigdons Road, Waurn Ponds, Victoria 3217, Australia.
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