751
|
|
752
|
Nishino M, Ozaki M, Hegab AE, Hamamoto J, Kagawa S, Arai D, Yasuda H, Naoki K, Soejima K, Saya H, Betsuyaku T. Variant CD44 expression is enriching for a cell population with cancer stem cell-like characteristics in human lung adenocarcinoma. J Cancer 2017; 8:1774-1785. [PMID: 28819374 PMCID: PMC5556640 DOI: 10.7150/jca.19732] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 05/29/2017] [Indexed: 12/14/2022] Open
Abstract
Background: Preliminary studies have identified cancer stem cells (CSCs) in various cancers and there are several ongoing clinical studies targeting these cells. CD44 (standard or variant isoforms) and/or aldehyde dehydrogenase (ALDH) expression is the most commonly used markers for the identification of CSCs. The goal of the current study was to examine the ability of CD44v, either alone or in combination with ALDH, to identify CSCs within human lung cancer cells lines. Methods: We examined several lung adenocarcinoma cell lines for the ability of CD44v and/or ALDH expression to enrich for cells with CSC characteristics such as in vitro differential proliferation rate, chemotherapeutic-resistance, tumorsphere formation, and in vivo tumorigenicity. We also compared their in vivo secondary tumor formation, and histological characteristics of their xenograft tumors, and examined their expression of PD-L1, EGFR, xCT, and reactive oxygen species (ROS). Results: Both CD44vhigh/ALDHhigh and CD44vhigh/ALDHlow cells were enriched in cells with CSC characteristics, with the CD44vhigh/ALDHlow cells being more proliferative and more resistant to chemotherapeutics, whereas CD44vhigh/ALDHhigh cells were more efficient in forming tumorspheres in vitro, in making primary xenograft tumors, and in propagating secondary tumors in vivo. Applying stricter sorting gates to select for cells with the highest CD44v/ALDH expression caused the CD44vhigh/ALDHlow cells to lose their high proliferation rates and chemotherapeutic resistance ability, but enriched for the tumorsphere-forming cells among the CD44vhigh/ALDHhigh and CD44vhigh/ALDHlow cells. CD44vhigh expression was associated with PD-L1 and xCT expression in both H1650 and HCC827 cells. This association was not modified by ALDH expression in the H1650 cell line. However, in the HCC827 cell line, ALDH expression was negatively associated with PD-L1 and positively associated with xCT expression. Conclusion: Lung adenocarcinoma cells with high CD44v expression are enriched for CSCs. Addition of ALDH as an enrichment marker bestowed some CSCs characteristics to CD44vhigh/ALDHlow cells and others to CD44vhigh/ALDHhigh cells. We propose that lung adenocarcinoma contains different CSCs, each of them endowed with different CSC characteristics.
Collapse
Affiliation(s)
- Makoto Nishino
- Division of Pulmonary Medicine, Department of Medicine, and
| | - Mari Ozaki
- Division of Pulmonary Medicine, Department of Medicine, and
| | - Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine, and
| | - Junko Hamamoto
- Division of Pulmonary Medicine, Department of Medicine, and
| | - Shizuko Kagawa
- Division of Pulmonary Medicine, Department of Medicine, and
| | - Daisuke Arai
- Division of Pulmonary Medicine, Department of Medicine, and
| | | | | | - Kenzo Soejima
- Division of Pulmonary Medicine, Department of Medicine, and
| | - Hideyuki Saya
- Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | | |
Collapse
|
753
|
Xie VK, Li Z, Yan Y, Jia Z, Zuo X, Ju Z, Wang J, Du J, Xie D, Xie K, Wei D. DNA-Methyltransferase 1 Induces Dedifferentiation of Pancreatic Cancer Cells through Silencing of Krüppel-Like Factor 4 Expression. Clin Cancer Res 2017; 23:5585-5597. [PMID: 28659310 DOI: 10.1158/1078-0432.ccr-17-0387] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 05/19/2017] [Accepted: 06/19/2017] [Indexed: 01/22/2023]
Abstract
Purpose: The dismal prognosis of pancreatic cancer has been linked to poor tumor differentiation. However, molecular basis of pancreatic cancer differentiation and potential therapeutic value of the underlying molecules remain unknown. We investigated the mechanistic underexpression of Krüppel-like factor 4 (KLF4) in pancreatic cancer and defined a novel epigenetic pathway of its activation for pancreatic cancer differentiation and treatment.Experimental Design: Expressions of KLF4 and DNMT1 in pancreatic cancer tissues were determined by IHC and the genetic and epigenetic alterations of KLF4 in and KLF4's impact on differentiation of pancreatic cancer were examined using molecular biology techniques. The function of dietary 3,3'-diindolylmethane (DIM) on miR-152/DNMT1/KLF4 signaling in pancreatic cancer was evaluated using both cell culture and animal models.Results: Overexpression of DNMT1 and promoter hypermethylation contributed to decreased KLF4 expression in and associated with poor differentiation of pancreatic cancer. Manipulation of KLF4 expression significantly affected differentiation marker expressions in pancreatic cancer cells. DIM treatment significantly induced miR-152 expression, which blocked DNMT1 protein expression and its binding to KLF4 promoter region, and consequently reduced promoter DNA methylation and activated KLF4 expression in pancreatic cancer cells. In addition, DIM treatment caused significant inhibition of cell growth in vitro and tumorigenesis in animal models of pancreatic cancer.Conclusions: This is the first demonstration that dysregulated KLF4 expression associates with poor differentiation of pancreatic cancer. Epigenetic activation of miR-152/DNMT1/KLF4 signaling pathway by dietary DIM causes differentiation and significant growth inhibition of pancreatic cancer cells, highlighting its translational implications for pancreatic and other cancers. Clin Cancer Res; 23(18); 5585-97. ©2017 AACR.
Collapse
Affiliation(s)
- Victoria K Xie
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Zhiwei Li
- Department Gastroenterology Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yongmin Yan
- Department Gastroenterology Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Zhiliang Jia
- Department Gastroenterology Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiangsheng Zuo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Zhenlin Ju
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jing Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jiawei Du
- Department of Oncology, Shanghai Tongji University East Hospital, Shanghai, P.R. China
| | - Dacheng Xie
- Department of Oncology, Shanghai Tongji University East Hospital, Shanghai, P.R. China
| | - Keping Xie
- Department Gastroenterology Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Daoyan Wei
- Department Gastroenterology Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| |
Collapse
|
754
|
Yin L, Tagde A, Gali R, Tai YT, Hideshima T, Anderson K, Avigan D, Kufe D. MUC1-C is a target in lenalidomide resistant multiple myeloma. Br J Haematol 2017. [PMID: 28643330 DOI: 10.1111/bjh.14801] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Lenalidomide (LEN) acts directly on multiple myeloma (MM) cells by inducing cereblon-mediated degradation of interferon regulatory factor 4, Ikaros (IKZF)1 and IKZF3, transcription factors that are essential for MM cell survival. The mucin 1 (MUC1) C-terminal transmembrane subunit (MUC1-C) oncoprotein is aberrantly expressed by MM cells and protects against reactive oxygen species (ROS)-mediated MM cell death. The present studies demonstrate that targeting MUC1-C with GO-203, a cell-penetrating peptide inhibitor of MUC1-C homodimerization, is more than additive with LEN in downregulating the WNT/β-catenin pathway, suppressing MYC, and inducing late apoptosis/necrosis. We show that the GO-203/LEN combination acts by synergistically increasing ROS and, in turn, suppressing β-catenin. LEN resistance has been linked to activation of the WNT/β-catenin→CD44 pathway. In this regard, our results further demonstrate that targeting MUC1-C is effective against LEN-resistant MM cells. Moreover, GO-203 resensitized LEN-resistant MM cells to LEN treatment in association with suppression of β-catenin and CD44. Targeting MUC1-C also resulted in downregulation of CD44 on the surface of primary MM cells. These findings, and the demonstration that expression of MUC1 and CD44 significantly correlate in microarrays from primary MM cells, provide support for combining GO-203 with LEN in the treatment of MM and in LEN-resistance.
Collapse
Affiliation(s)
- Li Yin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Ashujit Tagde
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Reddy Gali
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Yu-Tzu Tai
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Teru Hideshima
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Kenneth Anderson
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - David Avigan
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Donald Kufe
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| |
Collapse
|
755
|
Liu HX, Li N, Wei L, Zhou FX, Ma R, Xiao F, Zhang W, Zhang Y, Hui YP, Song H, Chen BL. High expression of Kruppel-like factor 4 as a predictor of poor prognosis for cervical cancer patient response to radiotherapy. Tumour Biol 2017. [PMID: 28639905 DOI: 10.1177/1010428317710225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Hai-Xia Liu
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Na Li
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Li Wei
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Fu-Xing Zhou
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Rui Ma
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Feng Xiao
- Department of Radiation Oncology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Wei Zhang
- The State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, The Fourth Military Medical University, Xi’an, China
| | - Ying Zhang
- Department of Gynecology and Obstetrics, The People’s Liberation Army 323 Hospital, Xi’an, China
| | - Yan-ping Hui
- Department of Pathology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Hui Song
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Bi-Liang Chen
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| |
Collapse
|
756
|
Roos A, Ding Z, Loftus JC, Tran NL. Molecular and Microenvironmental Determinants of Glioma Stem-Like Cell Survival and Invasion. Front Oncol 2017; 7:120. [PMID: 28670569 PMCID: PMC5472661 DOI: 10.3389/fonc.2017.00120] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 05/24/2017] [Indexed: 12/22/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most frequent primary brain tumor in adults with a 5-year survival rate of 5% despite intensive research efforts. The poor prognosis is due, in part, to aggressive invasion into the surrounding brain parenchyma. Invasion is a complex process mediated by cell-intrinsic pathways, extrinsic microenvironmental cues, and biophysical cues from the peritumoral stromal matrix. Recent data have attributed GBM invasion to the glioma stem-like cell (GSC) subpopulation. GSCs are slowly dividing, highly invasive, therapy resistant, and are considered to give rise to tumor recurrence. GSCs are localized in a heterogeneous cellular niche, and cross talk between stromal cells and GSCs cultivates a fertile environment that promotes GSC invasion. Pro-migratory soluble factors from endothelial cells, astrocytes, macrophages, microglia, and non-stem-like tumor cells can stimulate peritumoral invasion of GSCs. Therefore, therapeutic efforts designed to target the invasive GSCs may enhance patient survival. In this review, we summarize the current understanding of extrinsic pathways and major stromal and immune players facilitating GSC maintenance and survival.
Collapse
Affiliation(s)
- Alison Roos
- Departments of Cancer Biology and Neurosurgery, Mayo Clinic Arizona, Scottsdale, AZ, United States
| | - Zonghui Ding
- Department of Biochemistry and Molecular Biology, Mayo Clinic Arizona, Scottsdale, AZ, United States
| | - Joseph C Loftus
- Department of Biochemistry and Molecular Biology, Mayo Clinic Arizona, Scottsdale, AZ, United States
| | - Nhan L Tran
- Departments of Cancer Biology and Neurosurgery, Mayo Clinic Arizona, Scottsdale, AZ, United States
| |
Collapse
|
757
|
Brichkina A, Bertero T, Loh HM, Nguyen NTM, Emelyanov A, Rigade S, Ilie M, Hofman P, Gaggioli C, Bulavin DV. p38MAPK builds a hyaluronan cancer niche to drive lung tumorigenesis. Genes Dev 2017; 30:2623-2636. [PMID: 28007785 PMCID: PMC5204354 DOI: 10.1101/gad.290346.116] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/22/2016] [Indexed: 01/30/2023]
Abstract
Brichkina et al. show that lung cancer growth depends on short-distance cues produced by the cancer niche and identify fibroblast-specific hyaluronan synthesis at the center of p38-driven tumorigenesis. This in turn regulates early stromal fibroblast activation, the conversion to carcinoma-associated fibroblasts (CAFs), and cancer cell proliferation. Expansion of neoplastic lesions generates the initial signal that instigates the creation of a tumor niche. Nontransformed cell types within the microenvironment continuously coevolve with tumor cells to promote tumorigenesis. Here, we identify p38MAPK as a key component of human lung cancer, and specifically stromal interactomes, which provides an early, protumorigenic signal in the tissue microenvironment. We found that lung cancer growth depends on short-distance cues produced by the cancer niche in a p38-dependent manner. We identified fibroblast-specific hyaluronan synthesis at the center of p38-driven tumorigenesis, which regulates early stromal fibroblast activation, the conversion to carcinoma-associated fibroblasts (CAFs), and cancer cell proliferation. Systemic down-regulation of p38MAPK signaling in a knock-in model with substitution of activating Tyr182 to phenylalanine or conditional ablation of p38 in fibroblasts has a significant tumor-suppressive effect on K-ras lung tumorigenesis. Furthermore, both Kras-driven mouse lung tumors and orthotopically grown primary human lung cancers show a significant sensitivity to both a chemical p38 inhibitor and an over-the-counter inhibitor of hyaluronan synthesis. We propose that p38MAPK–hyaluronan-dependent reprogramming of the tumor microenvironment plays a critical role in driving lung tumorigenesis, while blocking this process could have far-reaching therapeutic implications.
Collapse
Affiliation(s)
- Anna Brichkina
- Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology, and Research), Biopolis, Singapore 138673
| | - Thomas Bertero
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France
| | - Hui Mun Loh
- Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology, and Research), Biopolis, Singapore 138673
| | - Nguyet Thi Minh Nguyen
- Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology, and Research), Biopolis, Singapore 138673
| | - Alexander Emelyanov
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France.,U1081, INSERM (Institut National de la Santé et de la Recherche Médicale), Nice 06107, France.,UMR 7284, CNRS (Centre National de la Recherche Scientifique), Nice 06107, France.,University of Nice-Sophia Antipolis, Nice 06300, France.,Centre Antoine Lacassagne, Nice 06100, France
| | - Sidwell Rigade
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France
| | - Marius Ilie
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France.,U1081, INSERM (Institut National de la Santé et de la Recherche Médicale), Nice 06107, France.,UMR 7284, CNRS (Centre National de la Recherche Scientifique), Nice 06107, France.,University of Nice-Sophia Antipolis, Nice 06300, France.,Centre Antoine Lacassagne, Nice 06100, France
| | - Paul Hofman
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France.,U1081, INSERM (Institut National de la Santé et de la Recherche Médicale), Nice 06107, France.,UMR 7284, CNRS (Centre National de la Recherche Scientifique), Nice 06107, France.,University of Nice-Sophia Antipolis, Nice 06300, France.,Centre Antoine Lacassagne, Nice 06100, France
| | - Cedric Gaggioli
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France.,U1081, INSERM (Institut National de la Santé et de la Recherche Médicale), Nice 06107, France.,UMR 7284, CNRS (Centre National de la Recherche Scientifique), Nice 06107, France.,University of Nice-Sophia Antipolis, Nice 06300, France
| | - Dmitry V Bulavin
- Institute for Research on Cancer and Aging of Nice (IRCAN), Nice 06107, France.,U1081, INSERM (Institut National de la Santé et de la Recherche Médicale), Nice 06107, France.,UMR 7284, CNRS (Centre National de la Recherche Scientifique), Nice 06107, France.,University of Nice-Sophia Antipolis, Nice 06300, France.,Centre Antoine Lacassagne, Nice 06100, France
| |
Collapse
|
758
|
Cancer nanotheranostics: A review of the role of conjugated ligands for overexpressed receptors. Eur J Pharm Sci 2017; 104:273-292. [DOI: 10.1016/j.ejps.2017.04.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 04/07/2017] [Accepted: 04/10/2017] [Indexed: 12/13/2022]
|
759
|
Kim CK, He P, Bialkowska AB, Yang VW. SP and KLF Transcription Factors in Digestive Physiology and Diseases. Gastroenterology 2017; 152:1845-1875. [PMID: 28366734 PMCID: PMC5815166 DOI: 10.1053/j.gastro.2017.03.035] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 12/14/2022]
Abstract
Specificity proteins (SPs) and Krüppel-like factors (KLFs) belong to the family of transcription factors that contain conserved zinc finger domains involved in binding to target DNA sequences. Many of these proteins are expressed in different tissues and have distinct tissue-specific activities and functions. Studies have shown that SPs and KLFs regulate not only physiological processes such as growth, development, differentiation, proliferation, and embryogenesis, but pathogenesis of many diseases, including cancer and inflammatory disorders. Consistently, these proteins have been shown to regulate normal functions and pathobiology in the digestive system. We review recent findings on the tissue- and organ-specific functions of SPs and KLFs in the digestive system including the oral cavity, esophagus, stomach, small and large intestines, pancreas, and liver. We provide a list of agents under development to target these proteins.
Collapse
Affiliation(s)
- Chang-Kyung Kim
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY
| | - Ping He
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY
| | - Agnieszka B. Bialkowska
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY,Corresponding Authors: Vincent W. Yang & Agnieszka B. Bialkowska, Department of Medicine, Stony Brook University School of Medicine, HSC T-16, Rm. 020; Stony Brook, NY, USA. Tel: (631) 444-2066; Fax: (631) 444-3144; ;
| | - Vincent W. Yang
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY,Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY,Corresponding Authors: Vincent W. Yang & Agnieszka B. Bialkowska, Department of Medicine, Stony Brook University School of Medicine, HSC T-16, Rm. 020; Stony Brook, NY, USA. Tel: (631) 444-2066; Fax: (631) 444-3144; ;
| |
Collapse
|
760
|
Goyette S, Liang Y, Mafuvadze B, Cook MT, Munir M, Hyder SM. Natural and synthetic progestins enrich cancer stem cell-like cells in hormone-responsive human breast cancer cell populations in vitro. BREAST CANCER-TARGETS AND THERAPY 2017; 9:347-357. [PMID: 28579829 PMCID: PMC5446973 DOI: 10.2147/bctt.s135371] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Clinical trials and studies have shown that combination estrogen/progestin hormone replacement therapy, but not estrogen therapy alone or placebo, increases breast cancer risk in postmenopausal women. Using animal models, we have previously shown that both natural and synthetic progestins (including medroxyprogesterone acetate [MPA], a synthetic progestin used widely in the clinical setting) accelerate the development of breast tumors in vivo and increase their metastasis to lymph nodes. Based on these observations, we have hypothesized that progestin-induced breast cancer tumor growth and metastasis may be mediated by an enrichment of the cancer stem cell (CSC) pool. In this study, we used T47-D and BT-474 hormone-responsive human breast cancer cells to examine the effects of progestin on phenotypic and functional markers of CSCs in vitro. Both natural and synthetic progestins (10 nM) significantly increased protein expression of CD44, an important CSC marker in tumor cells. MPA increased the levels of both CD44 variants v3 and v6 associated with stem cell functions. This induction of CD44 was blocked by the antiprogestin RU-486, suggesting that this process is progesterone receptor (PR) dependent. CD44 induction was chiefly progestin dependent. Because RU-486 can bind other steroid receptors, we treated PR-negative T47-DCO-Y cells with MPA and found that MPA failed to induce CD44 protein expression, confirming that PR is essential for progestin-mediated CD44 induction in T47-D cells. Further, MPA treatment of T47-D cells significantly increased the activity of aldehyde dehydrogenase (ALDH), another CSC marker. Finally, two synthetic progestins, MPA and norethindrone, significantly increased the ability of T47-D cells to form mammospheres, suggesting that enrichment of the CD44high, ALDHbright subpopulation of cancer cells induced by MPA exposure is of functional significance. Based on our observations, we contend that exposure of breast cancer cells to synthetic progestins leads to an enrichment of the CSC pool, supporting the development of progestin-accelerated tumors in vivo.
Collapse
Affiliation(s)
- Sandy Goyette
- Department of Biomedical Sciences.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Yayun Liang
- Department of Biomedical Sciences.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Benford Mafuvadze
- Department of Biomedical Sciences.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Matthew T Cook
- Department of Biomedical Sciences.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Moiz Munir
- Department of Biomedical Sciences.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Salman M Hyder
- Department of Biomedical Sciences.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| |
Collapse
|
761
|
Chen J, Kumar S. Biophysical Regulation of Cancer Stem/Initiating Cells: Implications for Disease Mechanisms and Translation. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2017; 1:87-95. [PMID: 29082354 DOI: 10.1016/j.cobme.2017.02.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cancer stem/initiating cells (CSCs) are a subset of tumor cells proposed to play privileged roles in seeding tumors and driving metastasis. CSCs have emerged as an increasingly important target of interest in cancer biology and therapy. Recent work has suggested that CSC maintenance and metastatic potential may be modulated by physical inputs within the tissue microenvironment, including interstitial pressure and extracellular matrix stiffness. Here we review recent progress in our understanding of CSC regulation by biophysical signals within the tumor microenvironment. While the mechanistic basis of this signaling remains incompletely understood, we discuss emerging evidence that mechanical inputs can epigenetically regulate CSC behavior and that some CSCs can evade mechanotransductive signals to more efficiently infiltrate tissue. We also describe efforts to leverage these findings to engineer culture platforms for the characterization of CSC mechanics for discovery and screening.
Collapse
Affiliation(s)
- Joseph Chen
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720
| | - Sanjay Kumar
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720
| |
Collapse
|
762
|
MiR-520b as a novel molecular target for suppressing stemness phenotype of head-neck cancer by inhibiting CD44. Sci Rep 2017; 7:2042. [PMID: 28515423 PMCID: PMC5435724 DOI: 10.1038/s41598-017-02058-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 04/12/2017] [Indexed: 01/16/2023] Open
Abstract
Cancer stem cells preferentially acquire the specific characteristics of stress tolerance and high mobility, allowing them to progress to a therapy-refractive state. To identify a critical molecule to regulate cancer stemness is indispensable to erratically cure cancer. In this study, we identified miR-520b as a novel molecular target to suppress head-neck cancer (HNC) with stemness phenotype. MiR-520b inhibited cellular migration and invasion via the mechanism of epithelial-mesenchymal transition. It also sensitized cells to therapeutic drug and irradiation. Significantly, miR-520b suppressed spheroid cell formation, as well as reduced expressions of multiple stemness regulators (Nestin, Twist, Nanog, Oct4). The CD44 molecule was identified as a direct target of miR-520b, as shown by the reverse correlative expressions, the response to miR-520 modulation, the luciferase reporter assay, and the functional rescue analyses. These cellular results were confirmed by a tumor xenograft mice study. Administration of miR-520b dramatically restrained tumorigenesis and liver colonization. Conversely, miR-520b silencing led to an acceleration of tumor growth. Taken together, our study demonstrated that miR-520b inhibits the malignancy of HNC through regulation of cancer stemness conversion by targeting CD44. MiR-520b may serve as an emerging therapeutic target that may be further developed for the intervention of refractory HNC.
Collapse
|
763
|
Lu CS, Shieh GS, Wang CT, Su BH, Su YC, Chen YC, Su WC, Wu P, Yang WH, Shiau AL, Wu CL. Chemotherapeutics-induced Oct4 expression contributes to drug resistance and tumor recurrence in bladder cancer. Oncotarget 2017; 8:30844-30858. [PMID: 27244887 PMCID: PMC5458172 DOI: 10.18632/oncotarget.9602] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 04/23/2016] [Indexed: 12/18/2022] Open
Abstract
Cancer cells initially characterized as sensitive to chemotherapy may acquire resistance to chemotherapy and lead to tumor recurrence through the expansion of drug-resistant population. Acquisition of drug resistance to conventional chemotherapy is a major obstacle in the treatment of recurrent cancer. Here we investigated whether anticancer drugs induced Oct4 expression, thereby contributing to acquired drug resistance and tumor recurrence in bladder cancer. We identified a positive correlation of Oct4 expression with tumor recurrence in 122 clinical specimens of superficial high-grade (stages T1-2) bladder transitional cell carcinoma (TCC). Increased Oct4 levels in bladder tumors were associated with short recurrence-free intervals in the patients. Chemotherapy induced Oct4 expression in bladder cancer cells. Notably, treatment with cisplatin increased CD44-positive bladder cancer cells expressing Oct4, representing cancer stem-like cell subpopulation. Forced expression of Oct4 reduced, whereas knockdown of Oct4 enhanced, drug sensitivity in bladder cancer cells. Furthermore, tumor cells overexpressing Oct4 responded poorly to cisplatin in vivo. In regard to clinical relevance, inhibition of Oct4 by all-trans retinoic acid (ATRA) synergistically increased sensitivity to cisplatin in bladder cancer cells. Furthermore, the combination of cisplatin and ATRA was superior to cisplatin alone in suppressing tumor growth. Therefore, our results provide evidence that Oct4 increases drug resistance and implicate that inhibition of Oct4 may be a therapeutic strategy to circumvent drug resistance.
Collapse
Affiliation(s)
- Chia-Sing Lu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Gia-Shing Shieh
- Department of Urology, Tainan Hospital, Ministry of Health and Welfare, Executive Yuan, Tainan, Taiwan
| | - Chung-Teng Wang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Bing-Hua Su
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Chu Su
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Cheng Chen
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wu-Chou Su
- Department of Internal Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pensee Wu
- Institute for Science & Technology in Medicine, Keele University, Keele, United Kingdom
| | - Wen-Horng Yang
- Department of Urology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ai-Li Shiau
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chao-Liang Wu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| |
Collapse
|
764
|
Gao Y, Xie X, Li F, Lu Y, Li T, Lian S, Zhang Y, Zhang H, Mei H, Jia L. A novel nanomissile targeting two biomarkers and accurately bombing CTCs with doxorubicin. NANOSCALE 2017; 9:5624-5640. [PMID: 28422250 DOI: 10.1039/c7nr00273d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Rare circulating tumor cells (CTCs) cause >50% of primary colorectal cancer survivors to develop deadly metastasis at 3-5 years after surgery; the current chemotherapies can do nothing about these cells. Herein, we synthesized a novel doxorubicin (DOX)-entrapped mesoporous silica nanoparticle (MSN), covalently-conjugated with two aptamers, for simultaneously targeting EpCAM and CD44, the typical surface biomarkers of colorectal CTCs. The nanomissile can specifically capture the metastasis-prone CTCs spiked in healthy human blood in a competitive-binding manner. The binding not only accurately delivers DOX into the cancer cells via the biomarker-mediated endocytosis to inhibit CTC viability through the DOX-dependent mechanism, but also inhibits the adhesion of cancer cells to the endothelium and the consequent transmembrane migration through the DOX-independent mechanism. The molecular entity of the conjugate and its pharmaceutical DOX encapsulation-releasing capacity are well-demonstrated via various physiochemical characterizations including gel electrophoresis, which proves the >8-hour biostability of the nanomissile in blood, long enough for it to chase CTCs in mice and synergistically inhibit the CTC-induced lung metastasis more potently than its single aptamer-conjugated counterparts and DOX itself. The present strategy may pave a new avenue for safe and effective cancer metastasis chemoprevention.
Collapse
Affiliation(s)
- Yu Gao
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350108, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
765
|
Freitag D, McLean AL, Simon M, Koch A, Grube S, Walter J, Kalff R, Ewald C. NANOG overexpression and its correlation with stem cell and differentiation markers in meningiomas of different WHO grades. Mol Carcinog 2017; 56:1953-1964. [PMID: 28345785 DOI: 10.1002/mc.22653] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 03/10/2017] [Accepted: 03/23/2017] [Indexed: 01/15/2023]
Abstract
NANOG, as a key regulator of pluripotency and acting synergistically with other factors, has been described as a crucial transcription factor in various types of cancer. In meningiomas the expression of this marker has not yet been described. With our study, we aimed to identify and localize NANOG and other possible markers of pluripotency, stem cell properties and differentiation in meningioma tissue, to elucidate a possible effect on tumorigenesis. The gene expression levels of NANOG (NANOG1 and NANOGP8), SOX2, OCT4, KLF4, ABCG2, CMYC, MSI1, CD44, NOTCH1, NES, SALL4B, TP53, and EPAS1 were quantitatively examined using RT-qPCR in 33 surgical specimens of low- (WHO grade I) as well as in high-grade (WHO grade II/III) meningiomas with dural tissue as reference. Immunofluorescence co-localization analysis following confocal fluorescence microscopy for NANOG, OCT4, SOX2, Nestin, KI-67, and CD44 was also performed. There was a significant overexpression of NANOG, MSI1, and EPAS1 and a downregulation of NES in all examined tumors. Subgroup analysis (WHO grade I versus grade II/III) revealed differences in the expression of NANOG, CD44, and MSI1. We found 1% NANOG-positive (NANOG+) cells in low-grade and 2% in grade II/III meningiomas co-expressing the other mentioned markers in various compositions. In particular, NANOG+ cells expressing SOX2 and OCT4 were successfully identified (26% low-grade versus 20% high-grade). Our data reveal an overexpression of NANOG and other markers of pluripotency and stemness in meningiomas. Such potentially pluripotent "stem cell-like" cells may have an impact on tumorigenesis and progression in human meningiomas.
Collapse
Affiliation(s)
- Diana Freitag
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Aaron Lawson McLean
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Michèle Simon
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany.,Department of Neurosurgery, Vivantes Klinikum im Friedrichshain, Berlin, Germany
| | - Arend Koch
- Department of Neuropathology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Susanne Grube
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Jan Walter
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Rolf Kalff
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Christian Ewald
- Department of Neurosurgery, Section of Experimental Neurooncology, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany.,Department of Neurosurgery, Städtisches Klinikum Brandenburg, Brandenburg an der Havel, Germany
| |
Collapse
|
766
|
Cortes-Dericks L, Schmid RA. CD44 and its ligand hyaluronan as potential biomarkers in malignant pleural mesothelioma: evidence and perspectives. Respir Res 2017; 18:58. [PMID: 28403901 PMCID: PMC5389171 DOI: 10.1186/s12931-017-0546-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/06/2017] [Indexed: 12/11/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is a rare and highly drug resistant tumor arising from the mesothelial surfaces of the lung pleura. The standard method to confirm MPM is the tedious, time-consuming cytological examination of cancer biopsy. Biomarkers that are detectable in pleural effusion or patient serum are reasonable options to provide a faster and noninvasive diagnostic approach. As yet, the current biomarkers for MPM lack specificity and sensitivity to discriminate this neoplasm from other lung tumors. CD44, a multifunctional surface receptor has been implicated in tumor progression in different cancers including MPM. The interaction of CD44 with its ligand, hyaluronan (HA) has demonstrated an important role in modulating cell proliferation and invasiveness in MPM. In particular, the high expression levels of these molecules have shown diagnostic relevance in MPM. This review will summarize the biology and diagnostic implication of CD44 and HA as well as the interaction of both molecules in MPM that will demonstrate their potential as biomarkers. Augmentation of the current markers in MPM may lead to an earlier diagnosis and management of this disease.
Collapse
Affiliation(s)
- Lourdes Cortes-Dericks
- Department of Clinical Research, Division of General Thoracic Surgery, University Hospital Berne, Berne, Switzerland.
| | - Ralph Alexander Schmid
- Department of Clinical Research, Division of General Thoracic Surgery, University Hospital Berne, Berne, Switzerland
| |
Collapse
|
767
|
Qiu GZ, Sun W, Jin MZ, Lin J, Lu PG, Jin WL. The bad seed gardener: Deubiquitinases in the cancer stem-cell signaling network and therapeutic resistance. Pharmacol Ther 2017; 172:127-138. [DOI: 10.1016/j.pharmthera.2016.12.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
768
|
Song X, Xing YM, Wu W, Cheng GH, Xiao F, Jin G, Liu Y, Zhao X. Expression of Krüppel-like factor 4 in breast cancer tissues and its effects on the proliferation of breast cancer MDA-MB-231 cells. Exp Ther Med 2017; 13:2463-2467. [PMID: 28565864 DOI: 10.3892/etm.2017.4262] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 12/09/2016] [Indexed: 01/24/2023] Open
Abstract
The aim of the present study was to detect the expression of Krüppel-like factor 4 (KLF4) in breast cancer tissues and to evaluate the effect on the proliferation of breast cancer MDA-MB-231 cells. The expression of KLF4 protein in 239 breast cancer tissues and 40 paracancerous tissues were detected by an immunohistochemical assay, and its correlation with clinical pathological parameters was analyzed. A eukaryotic expression vector, pcDNA3.1-KLF4, was constructed by transient transfection of breast cancer MDA-MB-231 cells with liposomes (experimental group). The untransfected cells and those transfected with empty plasmid pcDNA3.1 were used as the blank and negative control groups, respectively. The expression of the KLF4 gene and protein in the three groups were detected by reverse transcription polymerase chain reaction and western blotting, respectively. Furthermore, the cell proliferative capacity was detected by an MTT assay. The positive expression rate of KLF4 protein in breast cancer tissues (39.0%, 93/239) was significantly lower than that of paracancerous tissues (77.5%, 31/40) (P<0.05). In addition, KLF4 protein expression in breast cancer tissues was correlated with pathological type, histological grade and lymphatic metastasis (P<0.05). KLF4 mRNA and protein were both expressed by the experimental group, but not by the two control groups. Meanwhile, the proliferative capacity of the experimental group was also significantly decreased. A significant decrease in the positive expression rate of KLF4 protein in breast cancer tissues was correlated with several clinical pathological parameters. In addition, transfection of the KLF4 gene inhibited the proliferation of breast cancer cells, suggesting that this gene is important in the onset and progression of this type of cancer.
Collapse
Affiliation(s)
- Xiang Song
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Yue-Ming Xing
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Wei Wu
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Guo-Hua Cheng
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Feng Xiao
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Gang Jin
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Ying Liu
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xin Zhao
- Department of Oncology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| |
Collapse
|
769
|
Mittal K, Donthamsetty S, Kaur R, Yang C, Gupta MV, Reid MD, Choi DH, Rida PCG, Aneja R. Multinucleated polyploidy drives resistance to Docetaxel chemotherapy in prostate cancer. Br J Cancer 2017; 116:1186-1194. [PMID: 28334734 PMCID: PMC5418452 DOI: 10.1038/bjc.2017.78] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 02/24/2017] [Accepted: 03/01/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Docetaxel is the only FDA-approved first-line treatment for castration-resistant prostate cancer (CRPC) patients. Docetaxel treatment inevitably leads to tumour recurrence after an initial therapeutic response with generation of multinucleated polyploid (MP) cells. Here we investigated role of MP cells in clinical relapse of CRPC. METHODS Prostate cancer (PC-3) cells were treated with docetaxel (5 nM) for 3 days followed by a washout and samples were collected at close intervals over 35 days post drug washout. The tumorigenic potential of the giant MP cells was studied by implanting MP cells subcutaneously as tumour xenografts in nude mice. RESULTS Docetaxel-induced polyploid cells undergo mitotic slippage and eventually spawn mononucleated cells via asymmetric cell division or neosis. Both MP and cells derived from polyploid cells had increased survival signals, were positive for CD44 and were resistant to docetaxel chemotherapy. Although MP cells were tumorigenic in nude mice, these cells took a significantly longer time to form tumours compared with parent PC-3 cells. CONCLUSIONS Generation of MP cells upon docetaxel therapy is an adaptive response of apoptosis-reluctant cells. These giant cells ultimately contribute to the generation of mononucleated aneuploid cells via neosis and may have a fundamental role precipitating clinical relapse and chemoresistance in CRPC.
Collapse
Affiliation(s)
- Karuna Mittal
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | | | - Ramneet Kaur
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Chunhua Yang
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | | | - Michelle D Reid
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Da Hoon Choi
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| | - Padmashree C G Rida
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA.,Novazoi Theranostics, Inc., Rolling Hills Estates, CA 90274, USA
| | - Ritu Aneja
- Department of Biology, Georgia State University, Atlanta, GA-30303, USA
| |
Collapse
|
770
|
Nevi L, Carpino G, Costantini D, Cardinale V, Riccioni O, Di Matteo S, Melandro F, Berloco PB, Reid L, Gaudio E, Alvaro D. Hyaluronan coating improves liver engraftment of transplanted human biliary tree stem/progenitor cells. Stem Cell Res Ther 2017; 8:68. [PMID: 28320463 PMCID: PMC5360089 DOI: 10.1186/s13287-017-0492-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 01/11/2017] [Accepted: 01/28/2017] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Cell therapy of liver diseases with human biliary tree stem cells (hBTSCs) is biased by low engraftment efficiency. Coating the hBTSCs with hyaluronans (HAs), the primary constituents of all stem cell niches, could facilitate cell survival, proliferation, and, specifically, liver engraftment given that HAs are cleared selectively by the liver. METHODS We developed a fast and easy method to coat hBTSCs with HA and assessed the effects of HA-coating on cell properties in vitro and in vivo. RESULTS The HA coating markedly improved the viability, colony formation, and population doubling of hBTSCs in primary cultures, and resulted in a higher expression of integrins that mediate cell attachment to matrix components. When HA-coated hBTSCs were transplanted via the spleen into the liver of immunocompromised mice, the engraftment efficiency increased to 11% with respect to 3% of uncoated cells. Notably, HA-coated hBTSC transplantation in mice resulted in a 10-fold increase of human albumin gene expression in the liver and in a 2-fold increase of human albumin serum levels with respect to uncoated cells. Studies in distant organs showed minimal ectopic cell distribution without differences between HA-coated and uncoated hBTSCs and, specifically, cell seeding in the kidney was excluded. CONCLUSIONS A ready and economical procedure of HA cell coating greatly enhanced the liver engraftment of transplanted hBTSCs and improved their differentiation toward mature hepatocytes. HA coating could improve outcomes of stem cell therapies of liver diseases and could be immediately translated into the clinic given that GMP-grade HAs are already available for clinical use.
Collapse
Affiliation(s)
- Lorenzo Nevi
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy
| | - Guido Carpino
- Department of Movement, Human and Health Sciences, Division of Health Sciences, University of Rome "Foro Italico", Rome, Italy
| | - Daniele Costantini
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy
| | - Vincenzo Cardinale
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy
| | - Olga Riccioni
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Sabina Di Matteo
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy
| | - Fabio Melandro
- Department of General Surgery and Organ Transplantation, Sapienza University of Rome, Rome, Italy
| | | | - Lola Reid
- Department of Cell Biology and Physiology and Program in Molecular Biology and Biotechnology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Eugenio Gaudio
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy. .,Division of Human Anatomy, Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Via Borelli 50, 00161, Rome, Italy.
| | - Domenico Alvaro
- Department of Medicine and Medical Specialties, Sapienza University of Rome, Rome, Italy. .,Division of Gastroenterology, Department of Medico-Surgical Sciences and Biotechnologies, Polo Pontino, Fondazione Eleonora Lorillard Spencer Cenci, Sapienza University of Rome, Vialedell'Università 37, 00185, Rome, Italy.
| |
Collapse
|
771
|
Papaxoinis G, Nonaka D, O'Brien C, Sanderson B, Krysiak P, Mansoor W. Prognostic Significance of CD44 and Orthopedia Homeobox Protein (OTP) Expression in Pulmonary Carcinoid Tumours. Endocr Pathol 2017; 28:60-70. [PMID: 27873160 DOI: 10.1007/s12022-016-9459-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
CD44 and orthopedia homeobox protein (OTP) expressions have shown to be predictive of overall survival in pulmonary carcinoid (PC) tumours. The scope of the present study was to validate their role in PC patients and investigate potential application in clinical practice. Data was collected from patients presenting to a tertiary cancer centre diagnosed with PC between 2003 and 2015. Diagnosis was confirmed by central pathology review. Formalin-fixed paraffin-embedded (FFPE) tissue samples collected at diagnosis were scored using immunohistochemistry (H score) for standard CD44 and nuclear and cytoplasmic OTP protein expression. The study included 108 patients. High CD44/nuclear OTP (nOTP) expression was strongly associated with typical carcinoid (TC) histology (p < 0.001). Eighty-six patients, who underwent radical surgical resection, were selected to assess the impact of patient and tumour parameters on relapse-free survival (RFS). Sixty-nine (80 %) had TC and 17 (20 %) had atypical carcinoid tumours. On multivariate analysis, high CD44 and nOTP expression, TC histology and non-infiltrative tumour growth were associated with superior RFS. Early stage TC (stage pT1aN0) patients (N = 32; 46 %) had excellent prognosis irrespective of CD44/nOTP status. Importantly, TC patients with locally advanced disease (defined as >pT1aN0) and high CD44/nOTP expression (N = 26; 38 %) had excellent RFS (p = 0.005) compared to those with the same stage but low CD44 and/or nOTP (N = 11; 16 %). Additionally, the combination of CD44/nOTP expression and tumour growth pattern led to a more accurate prognostic system compared to the established WHO classification of PC tumours (concordance index = 0.902 vs 0.811, respectively, p < 0.001). Assessment of CD44/nOTP expression combined with tumour growth pattern identifies clear groups with largely different prognosis. These findings provide important information on how patients with these resected cancers should be followed up.
Collapse
Affiliation(s)
- George Papaxoinis
- Department of Medical Oncology, The Christie NHS Foundation Trust, 550 Wilmslow Road, Manchester, M20 4BX, UK
| | - Daisuke Nonaka
- Department of Histopathology, The Christie NHS Foundation Trust, Manchester, UK
- Institute of Cancer Studies, University of Manchester, Manchester, UK
| | - Ciara O'Brien
- Department of Medical Oncology, The Christie NHS Foundation Trust, 550 Wilmslow Road, Manchester, M20 4BX, UK
| | - Benjamin Sanderson
- Department of Medical Oncology, The Christie NHS Foundation Trust, 550 Wilmslow Road, Manchester, M20 4BX, UK
| | - Piotr Krysiak
- Department of Cardiothoracic Surgery, University Hospital of South Manchester, Manchester, UK
| | - Wasat Mansoor
- Department of Medical Oncology, The Christie NHS Foundation Trust, 550 Wilmslow Road, Manchester, M20 4BX, UK.
- Institute of Cancer Studies, University of Manchester, Manchester, UK.
| |
Collapse
|
772
|
Too LK, Gracie G, Hasic E, Iwakura JH, Cherepanoff S. Adult human retinal Müller glia display distinct peripheral and macular expression of CD117 and CD44 stem cell-associated proteins. Acta Histochem 2017; 119:142-149. [PMID: 28110937 DOI: 10.1016/j.acthis.2016.12.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 11/30/2016] [Accepted: 12/20/2016] [Indexed: 01/27/2023]
Abstract
Experimental evidence suggests human Müller glia exhibit neural progenitor properties in vitro. CD117 and CD44 are known to be expressed by stem cells, the survival of which appears to depend critically on interactions with hyaluronan-rich extracellular matrix (ECM). Here, we characterise Müller glia expression of CD117 and CD44 in normal adult human retina and describe how it correlates with hyaluronan distribution in ocular ECM. By using chromogen-based immunohistochemistry, CD117 expression was found in entire Müller glia cytoplasm spanning from inner to outer limiting membrane in both peripheral retina (PR) and macular retina (MR), mirroring expression of the established Müller glia marker vimentin. Unlike vimentin, CD117 was also strongly expressed by Müller glia nuclei. Relative to total inner nuclear layer (INL) nuclei, more CD117+ Müller glia nuclei were seen in PR than MR. By contrast, CD44 expression was found predominantly in Müller glia apical processes of PR; no expression was found in MR. Astral blue staining demonstrated the presence of hyaluronan in cortical vitreous and the interphotoreceptor matrix (IPM) in both MR and PR. Our findings demonstrate that: (i) both CD117 and CD44 are expressed by human adult Müller glia; (ii) CD117 is a robust nuclear and cytoplasmic immunohistochemical marker of Müller glia; and (iii) that while CD117 is expressed by the entire Müller glia in both PR and MR, CD44 is only expressed by Müller glia apices in PR. Since the apices of Müller glia are in direct contact with the hyaluronan-rich IPM, the Müller glia-IPM interface in PR is likely a favourable region for supporting progenitor or stem cell-like signalling. These observations provide novel insights into potential stem-cell favouring microenvironments in mature human retina.
Collapse
Affiliation(s)
- Lay Khoon Too
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia.
| | - Gary Gracie
- Sydpath, St Vincent's Hospital, Sydney, NSW, Australia
| | - Enisa Hasic
- SEALS Pathology, Prince of Wales Hospital, Sydney, NSW, Australia
| | - Julia H Iwakura
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
| | - Svetlana Cherepanoff
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia; Sydpath, St Vincent's Hospital, Sydney, NSW, Australia; SEALS Pathology, Prince of Wales Hospital, Sydney, NSW, Australia
| |
Collapse
|
773
|
Ghaleb AM, Yang VW. Krüppel-like factor 4 (KLF4): What we currently know. Gene 2017; 611:27-37. [PMID: 28237823 DOI: 10.1016/j.gene.2017.02.025] [Citation(s) in RCA: 352] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 02/17/2017] [Accepted: 02/21/2017] [Indexed: 02/06/2023]
Abstract
Krüppel-like factor 4 (KLF4) is an evolutionarily conserved zinc finger-containing transcription factor that regulates diverse cellular processes such as cell growth, proliferation, and differentiation. Since its discovery in 1996, KLF4 has been gaining a lot of attention, particularly after it was shown in 2006 as one of four factors involved in the induction of pluripotent stem cells (iPSCs). Here we review the current knowledge about the different functions and roles of KLF4 in various tissue and organ systems.
Collapse
Affiliation(s)
- Amr M Ghaleb
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Vincent W Yang
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY 11794, USA.
| |
Collapse
|
774
|
KLF4 is regulated by RAS/RAF/MEK/ERK signaling through E2F1 and promotes melanoma cell growth. Oncogene 2017; 36:3322-3333. [PMID: 28068326 PMCID: PMC5474568 DOI: 10.1038/onc.2016.481] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 10/14/2016] [Accepted: 11/17/2016] [Indexed: 02/07/2023]
Abstract
Melanoma is the most lethal form of skin cancer and treatment of metastatic melanoma remains challenging. BRAF/MEK inhibitors show only temporary benefit due the occurrence of resistance and immunotherapy is effective only in a subset of patients. To improve patient survival, there is a need to better understand molecular mechanisms that drive melanoma growth and operate downstream of the mitogen activated protein kinase (MAPK) signaling. The Krüppel-like factor 4 (KLF4) is a zinc-finger transcription factor that plays a critical role in embryonic development, stemness and cancer, where it can act either as oncogene or tumor suppressor. KLF4 is highly expressed in post-mitotic epidermal cells, but its role in melanoma remains unknown. Here, we address the function of KLF4 in melanoma and its interaction with the MAPK signaling pathway. We find that KLF4 is highly expressed in a subset of human melanomas. Ectopic expression of KLF4 enhances melanoma cell growth by decreasing apoptosis. Conversely, knock-down of KLF4 reduces melanoma cell proliferation and induces cell death. In addition, depletion of KLF4 reduces melanoma xenograft growth in vivo. We find that the RAS/RAF/MEK/ERK signaling positively modulates KLF4 expression through the transcription factor E2F1, which directly binds to KLF4 promoter. Overall, our data demonstrate the pro-tumorigenic role of KLF4 in melanoma and uncover a novel ERK1/2-E2F1-KLF4 axis. These findings identify KLF4 as a possible new molecular target for designing novel therapeutic treatments to control melanoma growth.
Collapse
|
775
|
Zhu J, Jiang Y, Yang X, Wang S, Xie C, Li X, Li Y, Chen Y, Wang X, Meng Y, Zhu M, Wu R, Huang C, Ma X, Geng S, Wu J, Zhong C. Wnt/β-catenin pathway mediates (−)-Epigallocatechin-3-gallate (EGCG) inhibition of lung cancer stem cells. Biochem Biophys Res Commun 2017; 482:15-21. [DOI: 10.1016/j.bbrc.2016.11.038] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 11/07/2016] [Indexed: 02/07/2023]
|
776
|
Hsieh PN, Sweet DR, Fan L, Jain MK. Aging and the Krüppel-like factors. TRENDS IN CELL & MOLECULAR BIOLOGY 2017; 12:1-15. [PMID: 29416266 PMCID: PMC5798252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The mammalian Krüppel-like factors (KLFs) are a family of zinc-finger containing transcription factors with diverse patterns of expression and a wide array of cellular functions. While their roles in mammalian physiology are well known, there is a growing appreciation for their roles in modulating the fundamental progression of aging. Here we review the current knowledge of Krüppel-like factors with a focus on their roles in processes regulating aging and age-associated diseases.
Collapse
Affiliation(s)
- Paishiun N. Hsieh
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - David R. Sweet
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Liyan Fan
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Mukesh K. Jain
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| |
Collapse
|
777
|
Associations of five polymorphisms in the CD44 gene with cancer susceptibility in Asians. Sci Rep 2016; 6:39485. [PMID: 28000766 PMCID: PMC5175131 DOI: 10.1038/srep39485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 11/09/2016] [Indexed: 12/30/2022] Open
Abstract
CD44 polymorphisms have been previously associated with cancer risk. However, the results between independent studies were inconsistent. Here, a meta-analysis was performed to systematically evaluate associations between CD44 polymorphisms and cancer susceptibility. A comprehensive literature search conducted in PubMed, Embase, and Web of Science databases through August 10, 2016 yielded 11 eligible publications consisting of 5,788 cancer patients and 5,852 controls. Overall, odds ratios (OR) calculated with 95% confidence intervals (CI) identified a significant association between CD44 polymorphism rs13347 and cancer susceptibility under all genetic models. Additionally, the minor allele of polymorphism rs11821102 was associated with a decreased susceptibility to cancer in allele contrast, dominant, and heterozygous models, while no significant association was identified for polymorphisms rs10836347, rs713330, or rs1425802. Subgroup analysis by ethnicity revealed rs13347 was significantly associated with cancer susceptibility for Chinese but not for Indians. Linkage disequilibrium (LD) between different polymorphisms varied across diverse ethnic populations. In conclusion, the results indicate that CD44 polymorphism rs13347 acts as a risk factor for cancer, especially in Chinese, while the minor allele of polymorphism rs11821102 may be associated with a decreased susceptibility to cancer. Nevertheless, further studies on a larger population covering different ethnicities are warranted.
Collapse
|
778
|
Qiao S, Zhao Y, Geng S, Li Y, Hou X, Liu Y, Lin FH, Yao L, Tian W. A novel double-targeted nondrug delivery system for targeting cancer stem cells. Int J Nanomedicine 2016; 11:6667-6678. [PMID: 27994463 PMCID: PMC5154727 DOI: 10.2147/ijn.s116230] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Instead of killing cancer stem cells (CSCs), the conventional chemotherapy used for cancer treatment promotes the enrichment of CSCs, which are responsible for tumor growth, metastasis, and recurrence. However, most therapeutic agents are only able to kill a small proportion of CSCs by targeting one or two cell surface markers or dysregulated CSC pathways, which are usually shared with normal stem cells (NSCs). In this study, we developed a novel nondrug delivery system for the dual targeting of CSCs by conjugating hyaluronic acid (HA) and grafting the doublecortin-like kinase 1 (DCLK1) monoclonal antibody to the surface of poly(ethylene glycol) (PEG)–poly(d,l-lactide-co-glycolide) (PLGA) nanoparticles (NPs), which can specifically target CD44 receptors and the DCLK1 surface marker – the latter was shown to possess the capacity to distinguish between CSCSs and NSCs. The size and morphology of these NPs were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). This was followed by studies of NP encapsulation efficiency and in vitro drug release properties. Then, the cytotoxicity of the NPs was tested via Cell Counting Kit-8 assay. Finally, the 4T1 CSCs were obtained from the alginate-based platform, which we developed as an in vitro tumor model. Tumor-bearing nude mice were used as in vivo models to systematically detect the ability of NPs to target CSCs. Our results showed that the DCLK1–HA–PEG–PLGA NPs exhibited a targeting effect toward CSCs both in vitro and in vivo. These findings have important implications for the rational design of drug delivery systems that target CSCs with high efficacy.
Collapse
Affiliation(s)
- Shupei Qiao
- School of Life Science and Technology, Harbin Institute of Technology
| | - Yufang Zhao
- School of Life Science and Technology, Harbin Institute of Technology
| | - Shuai Geng
- Department of Pharmacology, Harbin Medical University
| | - Yong Li
- School of Life Science and Technology, Harbin Institute of Technology
| | - Xiaolu Hou
- School of Life Science and Technology, Harbin Institute of Technology; Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Yi Liu
- School of Life Science and Technology, Harbin Institute of Technology
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan; Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan
| | - Lifen Yao
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Weiming Tian
- School of Life Science and Technology, Harbin Institute of Technology
| |
Collapse
|
779
|
Xue YK, Tan J, Dou DW, Chen D, Chen LJ, Ren HP, Chen LB, Xiong XG, Zheng H. Effect of Kruppel-like factor 4 on Notch pathway in hepatic stellate cells. ACTA ACUST UNITED AC 2016; 36:811-816. [PMID: 27924515 DOI: 10.1007/s11596-016-1667-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 10/15/2016] [Indexed: 02/06/2023]
Abstract
The relationship between Kruppel-like factor 4 (KLF4) and the Notch pathway was determined to investigate the effect of KLF4 on the activation of hepatic stellate cells and underlying mechanisms. Fifty SPF BALB/c mice were randomly divided into two groups. A liver fibrosis model was established in 25 mice as the experimental group, and the remaining 25 mice served as controls. On the day 0, 7, 14, and 35, liver tissues were removed for immunofluorescent detection. The Notch pathway inhibitor DAPT was added to the primary original hepatic stellate cells, and KLF4 and Notch-associated factor expression was detected by qRT-PCR. Additionally, the hepatic stellate cell line LX-2 was used to establish control and experimental groups, and was cultured in vitro. LX-2 cells in the experimental groups were treated with DAPT and the Notch activator transforming growth factor-beta 1 separately, whereas those in the control group were given isotonic culture medium. After 48 h, KLF4 expression was examined by Western blotting. After transient transfection of LX-2 cells to increase KLF4, the expression of Notch factor was examined. Immunofluorescence analysis showed that, with the aggravation of liver fibrosis, the absorbance (A) values of KLF4 were decreased (day 0: 980.73±153.19; day 7: 1087.99±230.23; day 14: 390.95±93.56; day 35: 245.99±87.34). The expression of Notch pathway- related factors (Notch-1, Notch-2, and Jagged-1) in the hepatic stellate cell membrane was negatively correlated to KLF4 expression. With the increase of KLF4 expression, Notch-2 (0.73±0.13) and Jagged-1 (0.43±0.12) expression decreased, whereas Notch-1 level was not detectable. When the Notch pathway was inhibited, KLF4 levels generally increased (18.12±1.31). Our results indicate that KLF4 expression is negatively correlated to the Notch pathway in hepatic stellate cells, which may provide a reference for the treatment of hepatic fibrosis.
Collapse
Affiliation(s)
- Yin-Kai Xue
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Jun Tan
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Dong-Wei Dou
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Ding Chen
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Lu-Jia Chen
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Huan-Ping Ren
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Li-Bo Chen
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China
| | - Xin-Gao Xiong
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China.
| | - Hai Zheng
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong Univerfsity of Science and Technology, Wuhan, 430022, China.
| |
Collapse
|
780
|
Zhao T, Jiang W, Wang X, Wang H, Zheng C, Li Y, Sun Y, Huang C, Han ZB, Yang S, Jia Z, Xie K, Ren H, Hao J. ESE3 Inhibits Pancreatic Cancer Metastasis by Upregulating E-Cadherin. Cancer Res 2016; 77:874-885. [PMID: 27923832 DOI: 10.1158/0008-5472.can-16-2170] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 11/12/2016] [Accepted: 11/19/2016] [Indexed: 12/15/2022]
Abstract
The ETS family transcription factor ESE3 is a crucial element in differentiation and development programs for many epithelial tissues. Here we report its role as a tumor suppressor in pancreatic cancer. We observed drastically lower ESE3 expression in pancreatic ductal adenocarcinomas (PDAC) compared with adjacent normal pancreatic tissue. Reduced expression of ESE3 in PDAC correlated closely with an increase in lymph node metastasis and vessel invasion and a decrease in relapse-free and overall survival in patients. In functional experiments, downregulating the expression of ESE3 promoted PDAC cell motility and invasiveness along with metastasis in an orthotopic mouse model. Mechanistic studies in PDAC cell lines, the orthotopic mouse model, and human PDAC specimens demonstrated that ESE3 inhibited PDAC metastasis by directly upregulating E-cadherin expression at the level of its transcription. Collectively, our results establish ESE3 as a negative regulator of PDAC progression and metastasis by enforcing E-cadherin upregulation. Cancer Res; 77(4); 874-85. ©2016 AACR.
Collapse
Affiliation(s)
- Tiansuo Zhao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China.,Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Wenna Jiang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Xiuchao Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Hongwei Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Chen Zheng
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Yang Li
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Yan Sun
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
| | - Chongbiao Huang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Zhi-Bo Han
- Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, P.R. China
| | - Shengyu Yang
- Department of Tumor Biology and Comprehensive Melanoma Research Center, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Zhiliang Jia
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Keping Xie
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - He Ren
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China
| | - Jihui Hao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin, P.R. China.
| |
Collapse
|
781
|
Hu X, Cong Y, Luo H(H, Wu S, Zhao L(E, Liu Q, Yang Y. Cancer Stem Cells Therapeutic Target Database: The First Comprehensive Database for Therapeutic Targets of Cancer Stem Cells. Stem Cells Transl Med 2016; 6:331-334. [PMID: 28191780 PMCID: PMC5442812 DOI: 10.5966/sctm.2015-0289] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 06/16/2016] [Indexed: 12/25/2022] Open
Abstract
Cancer stem cells (CSCs) are a subpopulation of tumor cells that have strong self-renewal capabilities and may contribute to the failure of conventional cancer therapies. Hence, therapeutics homing in on CSCs represent a novel and promising approach that may eradicate malignant tumors. However, the lack of information on validated targets of CSCs has greatly hindered the development of CSC-directed therapeutics. Herein, we describe the Cancer Stem Cells Therapeutic Target Database (CSCTT), the first online database to provide a rich bioinformatics resource for the display, search, and analysis of structure, function, and related annotation for therapeutic targets of cancer stem cells. CSCTT contains 135 proteins that are potential targets of CSCs, with validated experimental evidence manually curated from existing literatures. Proteins are carefully annotated with a detailed description of protein families, biological process, related diseases, and experimental evidences. In addition, CSCTT has compiled 213 documented therapeutic methods for cancer stem cells, including 118 small molecules and 20 biotherapy methods. The CSCTT may serve as a useful platform for the development of CSC-directed therapeutics against various malignant tumors. The CSCTT database is freely available to the public at http://www.csctt.org/. Stem Cells Translational Medicine 2017;6:331-334.
Collapse
Affiliation(s)
- Xiaoqing Hu
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| | - Ye Cong
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| | - Huizhe (Howard) Luo
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| | - Sijin Wu
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| | - Liyuan (Eric) Zhao
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| | - Quentin Liu
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, People's Republic of China
- Sun Yat‐sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, People's Republic of China
| | - Yongliang Yang
- Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| |
Collapse
|
782
|
GL-9 peptide regulates gene expression of CD44 cancer marker and pro-inflammatory cytokine TNF-α in human lung epithelial adenocarcinoma cell line (A549). Mol Cell Biochem 2016; 423:141-149. [DOI: 10.1007/s11010-016-2832-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 09/23/2016] [Indexed: 01/30/2023]
|
783
|
Cutucache CE, Herek TA. Burrowing through the Heterogeneity: Review of Mouse Models of PTCL-NOS. Front Oncol 2016; 6:206. [PMID: 27725924 PMCID: PMC5035739 DOI: 10.3389/fonc.2016.00206] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 09/12/2016] [Indexed: 12/19/2022] Open
Abstract
Currently, there are 19 different peripheral T-cell lymphoma (PTCL) entities recognized by the World Health Organization; however, ~70% of PTCL diagnoses fall within one of three subtypes [i.e., peripheral T-cell lymphoma not otherwise specified (PTCL-NOS), anaplastic large-cell lymphoma, and angioimmunoblastic T-cell lymphoma]. PTCL-NOS is a grouping of extra-thymic neoplasms that represent a challenging and heterogeneous subset of non-Hodgkin’s lymphomas. Research into peripheral T-cell lymphomas has been cumbersome as the lack of defining cytogenetic, histological, and molecular features has stymied diagnosis and treatment of these diseases. Similarly, the lacks of genetically manipulated murine models that faithfully recapitulate disease characteristics were absent prior to the turn of the century. Herein, we review the literature concerning existing mouse models for PTLC-NOS, while paying particular attention to the etiology of this heterogeneous disease.
Collapse
|
784
|
The role of CD44 in glioblastoma multiforme. J Clin Neurosci 2016; 34:1-5. [PMID: 27578526 DOI: 10.1016/j.jocn.2016.05.012] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 05/08/2016] [Indexed: 02/07/2023]
Abstract
A transmembrane molecule with several isoforms, CD44 is overexpressed in many tumors and promotes tumor formation through interactions with the tumor microenvironment. CD44 has been implicated in malignant processes including cell motility, tumor growth, and angiogenesis. The role of CD44 has been examined in many cancer types. This paper provides, to our knowledge, the first focused review of the role of CD44 in glioblastoma multiforme (GBM), the most common and fatal of primary brain cancers. We summarize research that describes how CD44 promotes GBM aggressiveness by increasing tumor cell invasion, proliferation and resistance to standard chemoradiation therapy. Effects of CD44 inhibition in GBM are also explored. Clinical trials investigating CD44 targeting in CD44-positive solid tumors are underway, and the evidence presented here suggests that CD44 inhibition in GBM may be a promising therapy.
Collapse
|
785
|
Tseng WC, Chuang CW, Yang MH, Pan CC, Tarng DC. Krüppel-like factor 4 is a novel prognostic predictor for urothelial carcinoma of bladder and it regulates TWIST1-mediated epithelial-mesenchymal transition. Urol Oncol 2016; 34:485.e15-485.e24. [PMID: 27519276 DOI: 10.1016/j.urolonc.2016.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 06/19/2016] [Accepted: 07/05/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND Krüppel-like factor 4 (KLF4) exerts tumor suppressive or oncogenic functions in a cell-type-dependent manner, but its prognostic role in urothelial carcinoma of bladder (UCB) remains unclear. We aimed to determine how KLF4 regulates epithelial-mesenchymal transition (EMT) and predicts patient survival in UCB. PATIENTS AND METHODS The roles of KLF4 and other EMT regulators in cancer progression were studied in UCB specimens of 398 patients, UCB cell lines. The results were validated by open-access The Cancer Genome Atlas dataset. RESULTS Over a median follow-up of 46.5 months, tissue microarray demonstrated that strong KLF4 expression was associated with higher risk toward metastasis and death (P<0.001). KLF4 expression positively correlated with TWIST1 and vimentin, and inversely correlated with E-cadherin expression. Metastasis-free survival was poorest in KLF4/TWIST1 coexpression group, followed by KLF4 or TWIST1 expression-alone group, and no-expression group (P<0.001). Multivariate analysis substantiated that KLF4/TWIST1 coexpression independently predicted overall mortality and metastasis risk with hazard ratios of 2.43 (95% CI: 1.65-3.64) and 7.54 (CI: 4.03-12.10). The Cancer Genome Atlas dataset of bladder cancer also revealed a trend toward decreased overall survival in the high KLF4 expression group as compared to the low KLF4 group. In vitro, KLF4 is accompanied with decreased E-cadherin and β-catenin expressions, increased vimentin and fibronectin expressions, and enhanced migration/invasion. KLF4 knockdown suppressed TWIST1 expression and inhibited EMT, migration and invasion, whereas enforced KLF4 overexpression activated TWIST1 expression and restored EMT and metastatic phenotype. Furthermore, TWIST1 knockdown abolished KLF4-faciliated EMT and metastatic feature without affecting KLF4 expression. CONCLUSIONS KLF4 promotes TWIST1-mediated EMT and may represent a novel prognostic predictor in UCB.
Collapse
Affiliation(s)
- Wei-Cheng Tseng
- Division of Nephrology, Department of Medicine, Taipei City Hospital Heping-Fuyou Branch, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Cheng-Wei Chuang
- Department and Institute of Physiology, National Yang-Ming University, Taipei, Taiwan
| | - Muh-Hwa Yang
- Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chin-Chen Pan
- Department of Pathology, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Der-Cherng Tarng
- Department and Institute of Physiology, National Yang-Ming University, Taipei, Taiwan; Immunology Center, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.
| |
Collapse
|
786
|
Guo K, Cui J, Quan M, Xie D, Jia Z, Wei D, Wang L, Gao Y, Ma Q, Xie K. The Novel KLF4/MSI2 Signaling Pathway Regulates Growth and Metastasis of Pancreatic Cancer. Clin Cancer Res 2016; 23:687-696. [PMID: 27449499 DOI: 10.1158/1078-0432.ccr-16-1064] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/24/2016] [Accepted: 07/13/2016] [Indexed: 02/05/2023]
Abstract
PURPOSE Musashi 2 (MSI2) is reported to be a potential oncoprotein in cases of leukemia and several solid tumors. However, its expression, function, and regulation in pancreatic ductal adenocarcinoma (PDAC) cases have yet to be demonstrated. Therefore, in the current study, we investigated the clinical significance and biologic effects of MSI2 expression in PDAC cases and sought to delineate the clinical significance of the newly identified Krüppel-like factor 4 (KLF4)/MSI2 regulatory pathway. EXPERIMENTAL DESIGN MSI2 expression and its association with multiple clinicopathologic characteristics in human PDAC specimens were analyzed immunohistochemically. The biological functions of MSI2 regarding PDAC cell growth, migration, invasion, and metastasis were studied using gain- and loss-of-function assays both in vitro and in vivo Regulation of MSI2 expression by KLF4 was examined in several cancer cell lines, and the underlying mechanisms were studied using molecular biologic methods. RESULTS MSI2 expression was markedly increased in both PDAC cell lines and human PDAC specimens, and high MSI2 expression was associated with poor prognosis for PDAC. Forced MSI2 expression promoted PDAC proliferation, migration, and invasion in vitro and growth and metastasis in vivo, whereas knockdown of MSI2 expression did the opposite. Transcriptional inhibition of MSI2 expression by KLF4 occurred in multiple PDAC cell lines as well as mouse models of PDAC. CONCLUSIONS Lost expression of KLF4, a transcriptional repressor of MSI2 results in overexpression of MSI2 in PDACs, which may be a biomarker for accurate prognosis. A dysregulated KLF4/MSI2 signaling pathway promotes PDAC progression and metastasis. Clin Cancer Res; 23(3); 687-96. ©2016 AACR.
Collapse
Affiliation(s)
- Kun Guo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.,Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jiujie Cui
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ming Quan
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Oncology, Shanghai East Hospital, Shanghai Tongji University, Shanghai, P.R. China
| | - Dacheng Xie
- Department of Oncology, Shanghai East Hospital, Shanghai Tongji University, Shanghai, P.R. China
| | - Zhiliang Jia
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Daoyan Wei
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Liang Wang
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yong Gao
- Department of Oncology, Shanghai East Hospital, Shanghai Tongji University, Shanghai, P.R. China.
| | - Qingyong Ma
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.
| | - Keping Xie
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| |
Collapse
|
787
|
Gunasekharan VK, Li Y, Andrade J, Laimins LA. Post-Transcriptional Regulation of KLF4 by High-Risk Human Papillomaviruses Is Necessary for the Differentiation-Dependent Viral Life Cycle. PLoS Pathog 2016; 12:e1005747. [PMID: 27386862 PMCID: PMC4936677 DOI: 10.1371/journal.ppat.1005747] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 06/16/2016] [Indexed: 02/07/2023] Open
Abstract
Human papillomaviruses (HPVs) are epithelial tropic viruses that link their productive life cycles to the differentiation of infected host keratinocytes. A subset of the over 200 HPV types, referred to as high-risk, are the causative agents of most anogenital malignancies. HPVs infect cells in the basal layer, but restrict viral genome amplification, late gene expression, and capsid assembly to highly differentiated cells that are active in the cell cycle. In this study, we demonstrate that HPV proteins regulate the expression and activities of a critical cellular transcription factor, KLF4, through post-transcriptional and post-translational mechanisms. Our studies show that KLF4 regulates differentiation as well as cell cycle progression, and binds to sequences in the upstream regulatory region (URR) to regulate viral transcription in cooperation with Blimp1. KLF4 levels are increased in HPV-positive cells through a post-transcriptional mechanism involving E7-mediated suppression of cellular miR-145, as well as at the post-translational level by E6–directed inhibition of its sumoylation and phosphorylation. The alterations in KLF4 levels and functions results in activation and suppression of a subset of KLF4 target genes, including TCHHL1, VIM, ACTN1, and POT1, that is distinct from that seen in normal keratinocytes. Knockdown of KLF4 with shRNAs in cells that maintain HPV episomes blocked genome amplification and abolished late gene expression upon differentiation. While KLF4 is indispensable for the proliferation and differentiation of normal keratinocytes, it is necessary only for differentiation-associated functions of HPV-positive keratinocytes. Increases in KLF4 levels alone do not appear to be sufficient to explain the effects on proliferation and differentiation of HPV-positive cells indicating that additional modifications are important. KLF4 has also been shown to be a critical regulator of lytic Epstein Barr virus (EBV) replication underscoring the importance of this cellular transcription factor in the life cycles of multiple human cancer viruses. Viruses that induce persistent infections often alter the expression and activities of cellular transcription factors to regulate their productive life cycles. Human papillomaviruses (HPVs) are epithelial tropic viruses that link their productive life cycles to the differentiation of infected host keratinocytes. Our studies show that KLF-4, originally characterized as a pluripotency factor, binds HPV-31 promoters activating viral transcription as well as modulates host cell differentiation and cell cycle progression. KLF4 levels and activity are enhanced in HPV-positive cells by E6 and E7 mediated post-transcriptional and post-translational mechanisms resulting in altered target gene expression and biological functions from that seen in normal keratinocytes. Importantly, silencing KLF4 hinders viral genome amplification and late gene expression. Along with its recently identified role in Epstein Barr Virus reactivation during differentiation, our studies demonstrate the importance of KLF4 in the life cycles of multiple human cancer viruses.
Collapse
Affiliation(s)
- Vignesh Kumar Gunasekharan
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Yan Li
- Center for Research Informatics, The University of Chicago, Chicago, Illinois, United States of America
| | - Jorge Andrade
- Center for Research Informatics, The University of Chicago, Chicago, Illinois, United States of America
| | - Laimonis A. Laimins
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- * E-mail:
| |
Collapse
|
788
|
Wnt Signaling in Cancer Stem Cell Biology. Cancers (Basel) 2016; 8:cancers8070060. [PMID: 27355964 PMCID: PMC4963802 DOI: 10.3390/cancers8070060] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/11/2016] [Accepted: 06/20/2016] [Indexed: 12/21/2022] Open
Abstract
Aberrant regulation of Wnt signaling is a common theme seen across many tumor types. Decades of research have unraveled the epigenetic and genetic alterations that result in elevated Wnt pathway activity. More recently, it has become apparent that Wnt signaling levels identify stem-like tumor cells that are responsible for fueling tumor growth. As therapeutic targeting of these tumor stem cells is an intense area of investigation, a concise understanding on how Wnt activity relates to cancer stem cell traits is needed. This review attempts at summarizing the intricacies between Wnt signaling and cancer stem cell biology with a special emphasis on colorectal cancer.
Collapse
|
789
|
Saboor-Maleki S, Rassouli FB, Matin MM, Iranshahi M. Auraptene Attenuates Malignant Properties of Esophageal Stem-Like Cancer Cells. Technol Cancer Res Treat 2016; 16:519-527. [PMID: 27207438 DOI: 10.1177/1533034616650119] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The high incidence of esophageal squamous cell carcinoma has been reported in selected ethnic populations including North of Iran. Low survival rate of esophageal carcinoma is partially due to the presence of stem-like cancer cells with chemotherapy resistance. In the current study, we aimed to determine the effects of auraptene, an interesting dietary coumarin with various biological activities, on malignant properties of stem-like esophageal squamous cell carcinoma, in terms of sensitivity to anticancer drugs and expression of specific markers. To do so, the half maximal inhibitory concentration values of auraptene, cisplatin, paclitaxel, and 5-fluorouracil were determined on esophageal carcinoma cells (KYSE30 cell line). After administrating combinatorial treatments, including nontoxic concentrations of auraptene + cisplatin, paclitaxel, or 5-fluorouracil, sensitivity of cells to chemical drugs and also induced apoptosis were assessed. In addition, quantitative real-time polymerase chain reaction was used to study changes in the expression of tumor suppressor proteins 53 and 21 ( P53 and P21), cluster of differentiation 44 ( CD44), and B cell-specific Moloney murine leukemia virus integration site 1 ( BMI-1) upon treatments. Results of thiazolyl blue assay revealed that auraptene significantly ( P < .05) increased toxicity of cisplatin, paclitaxel, and 5-fluorouracil in KYSE30 cells, specifically 72 hours after treatment. Conducting an apoptosis assay using flow cytometry also confirmed the synergic effects of auraptene. Results of quantitative real-time polymerase chain reaction revealed significant ( P < .05) upregulation of P53 and P21 upon combinatorial treatments and also downregulation of CD44 and BMI-1 after auraptene administration. Current study provided evidence, for the first time, that auraptene attenuates the properties of esophageal stem-like cancer cells through enhancing sensitivity to chemical agents and reducing the expression of CD44 and BMI-1 markers.
Collapse
Affiliation(s)
- Saffiyeh Saboor-Maleki
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Fatemeh B Rassouli
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.,2 Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Maryam M Matin
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.,2 Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mehrdad Iranshahi
- 3 Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
790
|
Chopin V, Lagadec C, Toillon RA, Le Bourhis X. Neurotrophin signaling in cancer stem cells. Cell Mol Life Sci 2016; 73:1859-70. [PMID: 26883804 PMCID: PMC11108437 DOI: 10.1007/s00018-016-2156-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 01/06/2016] [Accepted: 02/04/2016] [Indexed: 12/26/2022]
Abstract
Cancer stem cells (CSCs), are thought to be at the origin of tumor development and resistance to therapies. Thus, a better understanding of the molecular mechanisms involved in the control of CSC stemness is essential to the design of more effective therapies for cancer patients. Cancer cell stemness and the subsequent expansion of CSCs are regulated by micro-environmental signals including neurotrophins. Over the years, the roles of neurotrophins in tumor development have been well established and regularly reviewed. Especially, nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) are reported to stimulate tumor cell proliferation, survival, migration and/or invasion, and favors tumor angiogenesis. More recently, neurotrophins have been reported to regulate CSCs. This review briefly presents neurotrophins and their receptors, summarizes their roles in different cancers, and discusses the emerging evidence of neurotrophins-induced enrichment of CSCs as well as the involved signaling pathways.
Collapse
Affiliation(s)
- Valérie Chopin
- CPAC, Cell Plasticity and Cancer, Univ. Lille, INSERM U908, F-59 000, Villeneuve d'Ascq, France
- University of Picardie Jules Verne, 80000, Amiens, France
| | - Chann Lagadec
- CPAC, Cell Plasticity and Cancer, Univ. Lille, INSERM U908, F-59 000, Villeneuve d'Ascq, France
| | - Robert-Alain Toillon
- CPAC, Cell Plasticity and Cancer, Univ. Lille, INSERM U908, F-59 000, Villeneuve d'Ascq, France
| | - Xuefen Le Bourhis
- CPAC, Cell Plasticity and Cancer, Univ. Lille, INSERM U908, F-59 000, Villeneuve d'Ascq, France.
| |
Collapse
|
791
|
Turley EA, Wood DK, McCarthy JB. Carcinoma Cell Hyaluronan as a "Portable" Cancerized Prometastatic Microenvironment. Cancer Res 2016; 76:2507-12. [PMID: 27197262 DOI: 10.1158/0008-5472.can-15-3114] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 01/14/2016] [Indexed: 12/13/2022]
Abstract
Hyaluronan (HA) is a structurally simple polysaccharide, but its ability to act as a template for organizing pericellular matrices and its regulated synthesis and degradation are key to initiating repair responses. Importantly, these HA functions are usurped by tumor cells to facilitate progression and metastasis. Recent advances have identified the functional complexities associated with the synthesis and degradation of HA-rich matrices. Three enzymes synthesize large HA polymers while multiple hyaluronidases or tissue free radicals degrade these into smaller bioactive fragments. A family of extracellular and cell-associated HA-binding proteins/receptors translates the bioinformation encrypted in this complex polymer mixture to activate signaling networks required for cell survival, proliferation, and migration in an actively remodeling microenvironment. Changes in HA metabolism within both the peritumor stroma and parenchyma are linked to tumor initiation, progression, and poor clinical outcome. We review evidence that metastatic tumor cells must acquire the capability to autonomously synthesize, assemble, and process their own "portable" HA-rich microenvironments to survive in the circulation, metastasize to ectopic sites, and escape therapeutic intervention. Strategies to disrupt the HA machinery of primary tumor and circulating tumor cells may enhance the effectiveness of current conventional and targeted therapies. Cancer Res; 76(9); 2507-12. ©2016 AACR.
Collapse
Affiliation(s)
- Eva A Turley
- Cancer Research Laboratories, London Regional Cancer Center, Victoria Hospital, London, Ontario, Canada. Departments of Oncology, Biochemistry and Surgery, Schulich School of Medicine, Western University, London, Ontario, Canada.
| | - David K Wood
- Department of Biomedical Engineering, College of Science and Engineering, University of Minnesota, Minneapolis, Minnesota. Masonic Cancer Center, Minneapolis, Minnesota
| | - James B McCarthy
- Masonic Cancer Center, Minneapolis, Minnesota. Department of Laboratory Medicine and Pathology, Medical School, University of Minnesota, Minneapolis, Minnesota.
| |
Collapse
|
792
|
Oncogenic roles and drug target of CXCR4/CXCL12 axis in lung cancer and cancer stem cell. Tumour Biol 2016; 37:8515-28. [PMID: 27079871 DOI: 10.1007/s13277-016-5016-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/18/2016] [Indexed: 12/12/2022] Open
Abstract
Although the great progress has been made in diagnosis and therapeutic in lung cancer, it induces the most cancer death worldwide in both males and females. Chemokines, which have chemotactic abilities, contain up to 50 family members. By binding to G protein-coupled receptors (GPCR), holding seven-transmembrane domain, they function in immune cell trafficking and regulation of cell proliferation, differentiation, activation, and migration, homing under both physiologic and pathologic conditions. The alpha-chemokine receptor CXCR4 for the alpha-chemokine stromal cell-derived-factor-1 (SDF-1) is most widely expressed by tumors. In addition to human tissues of the bone marrow, liver, adrenal glands, and brain, the CXC chemokine SDF-1 or CXCL12 is also highly expressed in lung cancer tissues and is associated with lung metastasis. Lung cancer cells have the capabilities to utilize and manipulate the CXCL12/CXCR system to benefit growth and distant spread. CXCL12/CXCR4 axis is a major culprit for lung cancer and has a crucial role in lung cancer initiation and progression by activating cancer stem cell. This review provides an evaluation of CXCL12/CXCR4 as the potential therapeutic target for lung cancers; it also focuses on the synergistic effects of inhibition of CXCL12/CXCR4 axis and immunotherapy as well as chemotherapy. Together, CXCL12/CXCR4 axis can be a potential therapeutic target for lung cancers and has additive effects with immunotherapy.
Collapse
|
793
|
Lu B, Huang X, Mo J, Zhao W. Drug Delivery Using Nanoparticles for Cancer Stem-Like Cell Targeting. Front Pharmacol 2016; 7:84. [PMID: 27148051 PMCID: PMC4828437 DOI: 10.3389/fphar.2016.00084] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 03/14/2016] [Indexed: 12/20/2022] Open
Abstract
The theory of cancer stem-like cell (or cancer stem cell, CSC) has been established to explain how tumor heterogeneity arises and contributes to tumor progression in diverse cancer types. CSCs are believed to drive tumor growth and elicit resistance to conventional therapeutics. Therefore, CSCs are becoming novel target in both medical researches and clinical studies. Emerging evidences showed that nanoparticles effectively inhibit many types of CSCs by targeting various specific markers (aldehyde dehydrogenases, CD44, CD90, and CD133) and signaling pathways (Notch, Hedgehog, and TGF-β), which are critically involved in CSC function and maintenance. In this review, we briefly summarize the current status of CSC research and review a number of state-of-the-art nanomedicine approaches targeting CSC. In addition, we discuss emerging therapeutic strategies using epigenetic drugs to eliminate CSCs and inhibit cancer cell reprogramming.
Collapse
Affiliation(s)
- Bing Lu
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University Guangzhou, China
| | - Xiaojia Huang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University Guangzhou, China
| | - Jingxin Mo
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen UniversityGuangzhou, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen UniversityGuangzhou, China
| | - Wei Zhao
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen UniversityGuangzhou, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen UniversityGuangzhou, China
| |
Collapse
|
794
|
Huang YT, Lin YW, Chiu HM, Chiang BH. Curcumin Induces Apoptosis of Colorectal Cancer Stem Cells by Coupling with CD44 Marker. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2247-2253. [PMID: 26906122 DOI: 10.1021/acs.jafc.5b05649] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study investigated the effect of curcumin on colorectal cancer stem cells (CCSCs) and its possible mechanism. Comparison of the metabolic profiles of human adenomatous polyp (N = 61) and colorectal cancer (CRC) (N = 57) tissue found statistically significant differences (p < 0.05) in their composition of adenosine monophosphate (AMP), adenine, 5'-methythioadenosine, 3-hydroxybutyric acid, prostaglandin E2, threonine, and glutamine. Our cell culture model study found that curcumin treatment (50 μM for 48 h) did indeed increase apoptosis of CRC cells as well as of CCSCs, but at a significant level only in CD44(+) cells. Further metabolic profile studies of the CRC, CD44(+), and CD44(-) cells indicated that curcumin treatment increased glyceraldehyde and hydroxypropionic acid in CD44(-) cells but decreased glutamine content in both curcumin-treated CRC and CD44(+) cells. Based on our comparison of the metabolic profiles of human tissues and cancer cells, we suggest that curcumin might couple with CD44 and that curcumin-CD44(+) coupling at the cell membrane might have some blocking effect on the transport of glutamine into the cells, thus decreasing the glutamine content in the CD44(+) cells and inducing apoptosis.
Collapse
Affiliation(s)
- Yu-Ting Huang
- Institute of Food Science and Technology, College of Bio-resources and Agriculture, National Taiwan University , Taipei 10617, Taiwan
| | - Yu-Wei Lin
- Institute of Food Science and Technology, College of Bio-resources and Agriculture, National Taiwan University , Taipei 10617, Taiwan
| | - Han-Mo Chiu
- Department of Internal Medicine, National Taiwan University Hospital, College of Medicine, National Taiwan University , Taipei 10051, Taiwan
| | - Been-Huang Chiang
- Institute of Food Science and Technology, College of Bio-resources and Agriculture, National Taiwan University , Taipei 10617, Taiwan
| |
Collapse
|
795
|
Wei D, Wang L, Yan Y, Jia Z, Gagea M, Li Z, Zuo X, Kong X, Huang S, Xie K. KLF4 Is Essential for Induction of Cellular Identity Change and Acinar-to-Ductal Reprogramming during Early Pancreatic Carcinogenesis. Cancer Cell 2016; 29:324-338. [PMID: 26977883 PMCID: PMC4794756 DOI: 10.1016/j.ccell.2016.02.005] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 11/12/2015] [Accepted: 02/08/2016] [Indexed: 12/30/2022]
Abstract
Understanding the molecular mechanisms of tumor initiation has significant impact on early cancer detection and intervention. To define the role of KLF4 in pancreatic ductal adenocarcinoma (PDA) initiation, we used molecular biological analyses and mouse models of klf4 gain- and loss-of-function and mutant Kras. KLF4 is upregulated in and required for acinar-to-ductal metaplasia. Klf4 ablation drastically attenuates the formation of pancreatic intraepithelial neoplasia induced by mutant Kras(G12D), whereas upregulation of KLF4 does the opposite. Mutant KRAS and cellular injuries induce KLF4 expression, and ectopic expression of KLF4 in acinar cells reduces acinar lineage- and induces ductal lineage-related marker expression. These results demonstrate that KLF4 induces ductal identity in PanIN initiation and may be a potential target for prevention of PDA initiation.
Collapse
Affiliation(s)
- Daoyan Wei
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Liang Wang
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Yongmin Yan
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Zhiliang Jia
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Mihai Gagea
- Department of Veterinary Medicine & Surgery, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Zhiwei Li
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Xiangsheng Zuo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Xiangyu Kong
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Suyun Huang
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Keping Xie
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA; Department of Gastroenterology, Hepatology & Nutrition, Unit 1644, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
| |
Collapse
|
796
|
Yan Y, Li Z, Kong X, Jia Z, Zuo X, Gagea M, Huang S, Wei D, Xie K. KLF4-Mediated Suppression of CD44 Signaling Negatively Impacts Pancreatic Cancer Stemness and Metastasis. Cancer Res 2016; 76:2419-31. [PMID: 26880805 DOI: 10.1158/0008-5472.can-15-1691] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 01/26/2016] [Indexed: 12/31/2022]
Abstract
KLF4 and CD44 regulate cancer cell stemness, but their precise functions and roles in metastatic progression are not well understood. In this study, we used both inducible and genetic engineering approaches to assess whether the activities of these two factors intersect in pancreatic cancer. We found that genetic ablation of Klf4 in pancreatic cancer cells isolated from Klf4(flox/flox) mice drastically increased CD44 expression and promoted the acquisition of stem-like properties, whereas tetracycline-inducible expression of KLF4 suppressed these properties in vitro and in vivo Further mechanistic investigation revealed that KLF4 bound to the CD44 promoter to negatively regulate transcription and also the expression of the CD44 variant. Moreover, in human pancreatic ductal adenocarcinoma (PDAC) tissues, the expression patterns of KLF4 and CD44 were mutually exclusive, and this inverse relationship was particularly striking in human metastatic pancreatic tumors and in autochthonous mouse models of PDAC. Taken together, our findings demonstrate that KLF4 acts as a tumor suppressor in PDAC cells that restricts metastatic behaviors through direct negative regulation of CD44, providing support for the clinical investigation of therapeutic approaches focusing on targeted KLF4 activation in advanced tumors. Cancer Res; 76(8); 2419-31. ©2016 AACR.
Collapse
Affiliation(s)
- Yongmin Yan
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas. School of Medical Sciences and Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Zhiwei Li
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiangyu Kong
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas. Department of Gastroenterology, Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zhiliang Jia
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiangsheng Zuo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mihai Gagea
- Department of Veterinary Medicine & Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Suyun Huang
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Daoyan Wei
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Keping Xie
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| |
Collapse
|
797
|
Feng Q, Wu LQ. Relationship between KLF4 and primary hepatocellular carcinoma. Shijie Huaren Xiaohua Zazhi 2016; 24:497-504. [DOI: 10.11569/wcjd.v24.i4.497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Kruppel-like factors (KLFs) are a family of transcription factors with zinc finger structure, which play a key role in cell proliferation, apoptosis, differentiation and embryonic development. KLF4 is an important member of the KLF family, and it is highly expressed in primary hepatocellular carcinoma tissues. However, the mechanism of KLF4 in primary hepatocellular carcinoma remains to be explored. This paper reviews the biological function of KLF4 in primary hepatocellular carcinoma.
Collapse
|
798
|
Müller M, Hermann PC, Liebau S, Weidgang C, Seufferlein T, Kleger A, Perkhofer L. The role of pluripotency factors to drive stemness in gastrointestinal cancer. Stem Cell Res 2016; 16:349-57. [PMID: 26896855 DOI: 10.1016/j.scr.2016.02.005] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/19/2016] [Accepted: 02/01/2016] [Indexed: 12/28/2022] Open
Abstract
A better molecular understanding of gastrointestinal cancers arising either from the stomach, the pancreas, the intestine, or the liver has led to the identification of a variety of potential new molecular therapeutic targets. However, in most cases surgery remains the only curative option. The intratumoral cellular heterogeneity of cancer stem cells, bulk tumor cells, and stromal cells further limits straightforward targeting approaches. Accumulating evidence reveals an intimate link between embryonic development, stem cells, and cancer formation. In line, a growing number of oncofetal proteins are found to play common roles within these processes. Cancer stem cells share features with true stem cells by having the capacity to self-renew in a de-differentiated state, to generate heterogeneous types of differentiated progeny, and to give rise to the bulk tumor. Further, various studies identified genes in cancer stem cells, which were previously shown to regulate the pluripotency circuitry, particularly the so-called "Yamanaka-Factors" (OCT4, KLF4, SOX2, and c-MYC). However, the true stemness potential of cancer stem cells and the role and expression pattern of such pluripotency genes in various tumor cell types remain to be explored. Here, we summarize recent findings and discuss the potential mechanisms involved, and link them to clinical significance with a particular focus on gastrointestinal cancers.
Collapse
Affiliation(s)
- Martin Müller
- Department of Internal Medicine I, Ulm University, Ulm, Germany
| | | | - Stefan Liebau
- Institute of Neuroanatomy, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Clair Weidgang
- Department of Anesthesiology, Ulm University Hospital, Ulm, Germany
| | | | - Alexander Kleger
- Department of Internal Medicine I, Ulm University, Ulm, Germany.
| | - Lukas Perkhofer
- Department of Internal Medicine I, Ulm University, Ulm, Germany
| |
Collapse
|
799
|
Guo J, Xie K, Zheng S. Molecular Biomarkers of Pancreatic Intraepithelial Neoplasia and Their Implications in Early Diagnosis and Therapeutic Intervention of Pancreatic Cancer. Int J Biol Sci 2016; 12:292-301. [PMID: 26929736 PMCID: PMC4753158 DOI: 10.7150/ijbs.14995] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Lack of early detection and effective interventions is a major reason for the poor prognosis and dismal survival rates for pancreatic cancer. Pancreatic intraepithelial neoplasia (PanIN) is the most common precursor of invasive pancreatic ductal adenocarcinoma (PDAC). Each stage in the progression from PanIN to PDAC is well characterized by multiple significant genetic alterations affecting signaling pathways. Understanding the biological behavior and molecular alterations in the progression from PanIN to PDAC is crucial to the identification of noninvasive biomarkers for early detection and diagnosis and the development of preventive and therapeutic strategies for control of pancreatic cancer progression. This review focuses on molecular biomarkers of PanIN and their important roles in early detection and treatment of pancreatic cancer.
Collapse
Affiliation(s)
- Junli Guo
- 1. Department of Pathology, Affiliated Hospital of Hainan Medical College, Hainan Cancer Hospital, Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Haikou 571199, People's Republic of China; 2. Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Keping Xie
- 2. Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shaojiang Zheng
- 1. Department of Pathology, Affiliated Hospital of Hainan Medical College, Hainan Cancer Hospital, Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Haikou 571199, People's Republic of China; 2. Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| |
Collapse
|
800
|
Deregulated KLF4 Expression in Myeloid Leukemias Alters Cell Proliferation and Differentiation through MicroRNA and Gene Targets. Mol Cell Biol 2015; 36:559-73. [PMID: 26644403 DOI: 10.1128/mcb.00712-15] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 11/20/2015] [Indexed: 12/23/2022] Open
Abstract
Acute myeloid leukemia (AML) is characterized by increased proliferation and blocked differentiation of hematopoietic progenitors mediated, in part, by altered myeloid transcription factor expression. Decreased Krüppel-like factor 4 (KLF4) expression has been observed in AML, but how decreased KLF4 contributes to AML pathogenesis is largely unknown. We demonstrate decreased KLF4 expression in AML patient samples with various cytogenetic aberrations, confirm that KLF4 overexpression promotes myeloid differentiation and inhibits cell proliferation in AML cell lines, and identify new targets of KLF4. We have demonstrated that microRNA 150 (miR-150) expression is decreased in AML and that reintroducing miR-150 expression induces myeloid differentiation and inhibits proliferation of AML cells. We show that KLF family DNA binding sites are necessary for miR-150 promoter activity and that KLF2 or KLF4 overexpression induces miR-150 expression. miR-150 silencing, alone or in combination with silencing of CDKN1A, a well-described KLF4 target, did not fully reverse KLF4-mediated effects. Gene expression profiling and validation identified putative KLF4-regulated genes, including decreased MYC and downstream MYC-regulated gene expression in KLF4-overexpressing cells. Our findings indicate that decreased KLF4 expression mediates antileukemic effects through regulation of gene and microRNA networks, containing miR-150, CDKN1A, and MYC, and provide mechanistic support for therapeutic strategies increasing KLF4 expression.
Collapse
|