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Zheng Z, Li P, Shen F, Shi Y, Shao C. Mesenchymal Stem/Stromal Cells in Cancer: from Initiation to Metastasis. Arch Med Res 2022; 53:785-793. [PMID: 36462949 DOI: 10.1016/j.arcmed.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/02/2022] [Indexed: 12/05/2022]
Abstract
Mesenchymal stem/stromal cells (MSCs) exist in many tissues and have pleiotropic potential to self-renew and differentiate into multiple cell types. Recent research in tumor biology has focused on their low immunogenicity and tumorhoming properties. MSCs promote cancer initiation, progression, and metastasis through several different mechanisms, including epithelial-mesenchymal transition (EMT), angiogenesis, and through their interaction with immune cells. In this review, we discuss the recent advances in our understanding of the pathogenic role of MSCs in regulating tumor initiation, progression, and metastasis, thus providing a strong rationale for targeting MSCs in cancer therapy.
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Affiliation(s)
- Zhiyuan Zheng
- The Third Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine of Soochow University, Suzhou, Jiangsu, China; Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Cancer Center, Department of Breast Surgery, The Second Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - Peng Li
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Cancer Center, Department of Breast Surgery, The Second Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - Fangrong Shen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yufang Shi
- The Third Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine of Soochow University, Suzhou, Jiangsu, China.
| | - Changshun Shao
- The Third Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine of Soochow University, Suzhou, Jiangsu, China.
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2
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Sheta M, Hassan G, Afify SM, Monzur S, Kumon K, Abu Quora HA, Farahat M, Zahra MH, Fu X, Seno A, Seno M. Chronic exposure to FGF2 converts iPSCs into cancer stem cells with an enhanced integrin/focal adhesion/PI3K/AKT axis. Cancer Lett 2021; 521:142-154. [PMID: 34455015 DOI: 10.1016/j.canlet.2021.08.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 01/02/2023]
Abstract
We previously demonstrated the conversion of normal stem cells, including induced pluripotent stem cells (iPSCs), into cancer stem cells (CSCs) without genetic manipulation. Herein, we designed a meta-analysis to assess gene expression profiles in different breast cancer cell lines focusing on the secretory factors responsible for conversion. As a result, fibroblast growth factor 2 (FGF2) was found to be the best candidate in T47D and BT549 cells, of which conditioned medium was previously successful in inducing CSCs. When treated with 3.1 μg/ml FGF2, mouse iPSCs not only maintained survival without LIF for three weeks but also acquired growth ability independent of FGF2. The resultant cells exhibited expression of stemness and cancer stem cell markers, sphere-forming ability, differentiation, and tumorigenicity with malignancy. The primary cultures of the tumor confirmed the signatures of CSCs with two different phenotypes with or without GFP expression under control of the Nanog promoter. Bioinformatic analysis of gene expression profiles suggested constitutive autocrine activation of the FGF receptor, integrins, focal adhesions, and PI3K/AKT pathways. FGF2 could potently initiate cancer as a component of the inflammatory microenvironment.
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Affiliation(s)
- Mona Sheta
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan; Department of Cancer Biology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ghmkin Hassan
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan; Department of Microbiology and Biochemistry, Faculty of Pharmacy, Damascus University, Damascus, Syria
| | - Said M Afify
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan; Division of Biochemistry, Chemistry Department, Faculty of Science, Menoufia University, Menoufia, Egypt
| | - Sadia Monzur
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Kazuki Kumon
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Hagar A Abu Quora
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Mahmoud Farahat
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Maram H Zahra
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Xiaoying Fu
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan; Department of Pathology, Tianjin University of Traditional Chinese Medicine, China
| | - Akimasa Seno
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Masaharu Seno
- Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan.
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3
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Navalkar A, Pandey S, Singh N, Patel K, Datta D, Mohanty B, Jadhav S, Chaudhari P, Maji SK. Direct evidence of cellular transformation by prion-like p53 amyloid infection. J Cell Sci 2021; 134:269011. [PMID: 34085695 DOI: 10.1242/jcs.258316] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/21/2021] [Indexed: 11/20/2022] Open
Abstract
Tumor suppressor p53 mutations are associated with more than 50% of cancers. Aggregation and amyloid formation of p53 is also implicated in cancer pathogenesis, but direct evidence for aggregated p53 amyloids acting as an oncogene is lacking. Here, we conclusively demonstrate that wild-type p53 amyloid formation imparts oncogenic properties to non-cancerous cells. p53 amyloid aggregates were transferred through cell generations, contributing to enhanced survival, apoptotic resistance with increased proliferation and migration. The tumorigenic potential of p53 amyloid-transformed cells was further confirmed in mouse xenografts, wherein the tumors showed p53 amyloids. p53 disaggregation rescued the cellular transformation and inhibited tumor development in mice. We propose that wild-type p53 amyloid formation contributes to tumorigenesis and can be a potential target for therapeutic intervention. This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Ambuja Navalkar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India400076
| | - Satyaprakash Pandey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India400076
| | - Namrata Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India400076
| | - Komal Patel
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India400076
| | - Debalina Datta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India400076
| | - Bhabani Mohanty
- Small Animal Imaging Facility, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, India410210
| | | | - Pradip Chaudhari
- Small Animal Imaging Facility, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, India410210.,Department of Life Sciences, Homi Bhabha National Institute, Anushaktinagar, Mumbai, India400094
| | - Samir K Maji
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India400076
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4
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Abstract
Appropriate mechanical forces on cells are vital for normal cell behaviour and this review discusses the possibility that tumour initiation depends partly on the disruption of the normal physical architecture of the extracellular matrix (ECM) around a cell. The alterations that occur thence promote oncogene expression. Some questions, that are not answered with certainty by current consensus mechanisms of tumourigenesis, are elegantly explained by the triggering of tumours being a property of the physical characteristics of the ECM, which is operative following loading of the tumour initiation process with a relevant gene variant. Clinical observations are consistent with this alternative hypothesis which is derived from studies that have, together, accumulated an extensive variety of data incorporating biochemical, genetic and clinical findings. Thus, this review provides support for the view that the ECM may have an executive function in induction of a tumour. Overall, reported observations suggest that either restoring an ECM associated with homeostasis or targeting the related signal transduction mechanisms may possibly be utilised to modify or control the early progression of cancers. The review provides a coherent template for discussing the notion, in the context of contemporary knowledge, that tumourigenesis is an alliance of biochemistry, genetics and biophysics, in which the physical architecture of the ECM may be a fundamental component. For more definitive clarification of the concept there needs to be a phalanx of experiments conceived around direct questions that are raised by this paper.
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Affiliation(s)
- John J Evans
- Department of Obstetrics and Gynaecology, University of Otago Christchurch, Christchurch, New Zealand.
- MacDiarmid Institute of Advanced Materials and Nanotechnology, Christchurch, New Zealand.
| | - Maan M Alkaisi
- MacDiarmid Institute of Advanced Materials and Nanotechnology, Christchurch, New Zealand
- Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand
| | - Peter H Sykes
- Department of Obstetrics and Gynaecology, University of Otago Christchurch, Christchurch, New Zealand
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Elliott B, Millena AC, Matyunina L, Zhang M, Zou J, Wang G, Zhang Q, Bowen N, Eaton V, Webb G, Thompson S, McDonald J, Khan S. Essential role of JunD in cell proliferation is mediated via MYC signaling in prostate cancer cells. Cancer Lett 2019; 448:155-167. [PMID: 30763715 PMCID: PMC6414252 DOI: 10.1016/j.canlet.2019.02.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 12/12/2022]
Abstract
JunD, a member of the AP-1 family, is essential for cell proliferation in prostate cancer (PCa) cells. We recently demonstrated that JunD knock-down (KD) in PCa cells results in cell cycle arrest in G1-phase concomitant with a decrease in cyclin D1, Ki67, and c-MYC, but an increase in p21 levels. Furthermore, the over-expression of JunD significantly increased proliferation suggesting JunD regulation of genes required for cell cycle progression. Here, employing gene expression profiling, quantitative proteomics, and validation approaches, we demonstrate that JunD KD is associated with distinct gene and protein expression patterns. Comparative integrative analysis by Ingenuity Pathway Analysis (IPA) identified 1) cell cycle control/regulation as the top canonical pathway whose members exhibited a significant decrease in their expression following JunD KD including PRDX3, PEA15, KIF2C, and CDK2, and 2) JunD dependent genes are associated with cell proliferation, with MYC as the critical downstream regulator. Conversely, JunD over-expression induced the expression of the above genes including c-MYC. We conclude that JunD is a crucial regulator of cell cycle progression and inhibiting its target genes may be an effective approach to block prostate carcinogenesis.
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Affiliation(s)
- Bethtrice Elliott
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - Ana Cecilia Millena
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - Lilya Matyunina
- Integrated Cancer Research Center, School of Biological Sciences, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA, 30309, USA
| | - Mengnan Zhang
- Integrated Cancer Research Center, School of Biological Sciences, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA, 30309, USA
| | - Jin Zou
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - Guangdi Wang
- Department of Chemistry, RCMI Cancer Research Center, Xavier University, 1 Drexel Drive, New Orleans, LA, 70125, USA
| | - Qiang Zhang
- Department of Chemistry, RCMI Cancer Research Center, Xavier University, 1 Drexel Drive, New Orleans, LA, 70125, USA
| | - Nathan Bowen
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - Vanessa Eaton
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - Gabrielle Webb
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - Shadyra Thompson
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA
| | - John McDonald
- Integrated Cancer Research Center, School of Biological Sciences, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA, 30309, USA
| | - Shafiq Khan
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr. SW, Atlanta, GA, 30314, USA.
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Le Magnen C, Virk RK, Dutta A, Kim JY, Panja S, Lopez-Bujanda ZA, Califano A, Drake CG, Mitrofanova A, Abate-Shen C. Cooperation of loss of NKX3.1 and inflammation in prostate cancer initiation. Dis Model Mech 2018; 11:dmm035139. [PMID: 30266798 PMCID: PMC6262819 DOI: 10.1242/dmm.035139] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 09/07/2018] [Indexed: 02/06/2023] Open
Abstract
Although it is known that inflammation plays a critical role in prostate tumorigenesis, the underlying processes are not well understood. Based on analysis of genetically engineered mouse models combined with correlative analysis of expression profiling data from human prostate tumors, we demonstrate a reciprocal relationship between inflammation and the status of the NKX3.1 homeobox gene associated with prostate cancer initiation. We find that cancer initiation in aged Nkx3.1 mutant mice correlates with enrichment of specific immune populations and increased expression of immunoregulatory genes. Furthermore, expression of these immunoregulatory genes is similarly increased in human prostate tumors having low levels of NKX3.1 expression. We further show that induction of prostatitis in Nkx3.1 mutant mice accelerates prostate cancer initiation, which is coincident with aberrant cellular plasticity and differentiation. Correspondingly, human prostate tumors having low levels of NKX3.1 have de-regulated expression of genes associated with these cellular processes. We propose that loss of function of NKX3.1 accelerates inflammation-driven prostate cancer initiation potentially via aberrant cellular plasticity and impairment of cellular differentiation.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Clémentine Le Magnen
- Departments of Medicine and Urology, Institute of Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Renu K Virk
- Department of Pathology and Cell Biology, Columbia University Medical Center, NY 10032, USA
| | - Aditya Dutta
- Departments of Medicine and Urology, Institute of Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Jaime Yeji Kim
- Department of Medicine, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Sukanya Panja
- Department of Health Informatics, Rutgers School of Health Professions, Rutgers, The State University of New Jersey, Newark, NJ 07101, USA
| | - Zoila A Lopez-Bujanda
- Graduate Program in Pathobiology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Medicine, Columbia Center for Translational Immunology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Andrea Califano
- Departments of Systems Biology and Biochemistry and Molecular Biophysics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Charles G Drake
- Department of Medicine, Columbia Center for Translational Immunology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Antonina Mitrofanova
- Department of Health Informatics, Rutgers School of Health Professions, Rutgers, The State University of New Jersey, Newark, NJ 07101, USA
- Department of Systems Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Cory Abate-Shen
- Departments of Urology, Medicine, Pathology & Cell Biology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
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Liou GY. CD133 as a regulator of cancer metastasis through the cancer stem cells. Int J Biochem Cell Biol 2018; 106:1-7. [PMID: 30399449 DOI: 10.1016/j.biocel.2018.10.013] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/28/2018] [Accepted: 10/31/2018] [Indexed: 02/06/2023]
Abstract
Cancer stem cells are the cancer cells that have abilities to self-renew, differentiate into defined progenies, and initiate and maintain tumor growth. They also contribute to cancer metastasis and therapeutic resistance, both of which are the major causes of cancer mortality. Among the reported makers of the cancer stem cells, CD133 is the most well-known marker for isolating and studying cancer stem cells in different types of cancer. The CD133high population of cancer cells are not only capable of self-renewal, proliferation, but also highly metastatic and resistant to therapy. Despite very limited information on physiological functions of CD133, many ongoing studies are aimed to reveal the mechanisms that CD133 utilizes to modulate cancer dissemination and drug resistance with a long-term goal for bringing down the number of cancer deaths. In this review, in addition to the regulation of CD133, and its involvement in cancer initiation, and development, the recent updates on how CD133 modulates cancer dissemination, and therapeutic resistance are provided. The key signaling pathways that are upstream or downstream of CD133 during these processes are summarized. A comprehensive understanding of CD133-mediated cancer initiation, development, and dissemination through its pivotal role in cancer stem cells will offer new strategies in cancer therapy.
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Affiliation(s)
- Geou-Yarh Liou
- Clark Atlanta University, Center for Cancer Research & Therapeutic Development, and Department of Biological Sciences, 223 James P. Brawley Drive SW, Atlanta, GA 30314, USA.
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You W, Rühli FJ, Henneberg RJ, Henneberg M. Greater family size is associated with less cancer risk: an ecological analysis of 178 countries. BMC Cancer 2018; 18:924. [PMID: 30257658 PMCID: PMC6156945 DOI: 10.1186/s12885-018-4837-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 09/19/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Greater family size measured with total fertility rate (TFR) and with household size, may offer more life satisfaction to the family members. Positive psychological well-being has been postulated to decrease cancer initiation risk. This ecological study aims to examine the worldwide correlation between family size, used as the measure of positive psychological well-being, and total cancer incidence rates. METHODS Country specific estimates obtained from United Nations agencies on total cancer incidence rates (total, female and male rates in age range 0-49 years and all ages respectively), all ages site cancer incidence (bladder, breast, cervix uteri, colorectum, corpus uteri, lung, ovary and stomach), TFR, household size, life expectancy, urbanization, per capita GDP PPP and self-calculated Biological State Index (Ibs) were matched for data analysis. Pearson's, non-parametric Spearman's, partial correlations, independent T-test and multivariate regressions were conducted in SPSS. RESULTS Worldwide, TFR and household size were significantly and negatively correlated to all the cancer incidence variables. These correlations remained significant in partial correlation analysis when GDP, life expectancy, Ibs and urbanization were controlled for. TFR correlated to male cancer incidence rate (all ages) significantly stronger than it did to female cancer incidence rate (all ages) in both Pearson's and partial correlations. Multivariate stepwise regression analysis indicated that TFR and household size were consistently significant predictors of all cancer incidence variables. CONCLUSIONS Countries with greater family size have lower cancer risk in both females, and especially males. Our results seem to suggest that it may be worthwhile further examining correlations between family size and cancer risk in males and females through the cohort and case-control studies based on large samples.
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Affiliation(s)
- Wenpeng You
- Adelaide Medical School, The University of Adelaide, Adelaide, SA 5005 Australia
| | - Frank J Rühli
- Institute of Evolutionary Medicine, University of Zurich, Zürich, Switzerland
| | - Renata J Henneberg
- Biological Anthropology and Comparative Anatomy Unit, Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Maciej Henneberg
- Adelaide Medical School, The University of Adelaide, Adelaide, SA 5005 Australia
- Institute of Evolutionary Medicine, University of Zurich, Zürich, Switzerland
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The 150 most important questions in cancer research and clinical oncology series: Questions 25-30 : Edited by Chinese Journal of Cancer. Chin J Cancer 2017; 36:42. [PMID: 28472999 PMCID: PMC5418677 DOI: 10.1186/s40880-017-0210-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 04/28/2017] [Indexed: 12/13/2022]
Abstract
To accelerate our endeavors to overcome cancer, Chinese Journal of Cancer has launched a program of publishing 150 most important questions in cancer research and clinical oncology. In this article, 6 more questions are presented as followed. Question 25: Does imprinting of immune responses to infections early in life predict future risk of childhood and adult cancers? Question 26: How to induce homogeneous tumor antigen expression in a heterogeneous tumor mass to enhance the efficacy of cancer immunotherapy? Question 27: Could we enhance the therapeutic effects of immunotherapy by targeting multiple tumor antigens simultaneously or sequentially? Question 28: Can immuno-targeting to cytokines halt cancer metastasis? Question 29: How can we dynamically and less-invasively monitor the activity of CD8+ T killer cells at tumor sites and draining lymph nodes? Question 30: How can the immune system destroy the niches for cancer initiation?
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Abstract
Endogenous estrogens become carcinogens when excessive catechol estrogen quinone metabolites are formed. Specifically, the catechol estrogen-3,4-quinones can react with DNA to produce a large amount of specific depurinating estrogen-DNA adducts, formed at the N-3 of Ade and N-7 of Gua. Loss of these adducts leaves apurinic sites in the DNA, which can generate subsequent cancer-initiating mutations. Unbalanced estrogen metabolism yields excessive catechol estrogen-3,4-quinones, increasing formation of the depurinating estrogen-DNA adducts and the risk of initiating cancer. Evidence for this mechanism of cancer initiation comes from studies in vitro, in cell culture, in animal models and in human subjects. High levels of estrogen-DNA adducts have been observed in women with breast, ovarian or thyroid cancer, and in men with prostate cancer or non-Hodgkin lymphoma. Observation of high levels of depurinating estrogen-DNA adducts in high risk women before the presence of breast cancer indicates that adduct formation is a critical factor in breast cancer initiation. Two dietary supplements, N-acetylcysteine and resveratrol, complement each other in reducing formation of catechol estrogen-3,4-quinones and inhibiting formation of estrogen-DNA adducts in cultured human and mouse breast epithelial cells. They also inhibit malignant transformation of these epithelial cells. In addition, formation of adducts was reduced in women who followed a Healthy Breast Protocol that includes N-acetylcysteine and resveratrol. Blocking initiation of cancer prevents promotion, progression and development of the disease. These results suggest that reducing formation of depurinating estrogen-DNA adducts can reduce the risk of developing a variety of types of human cancer.
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Affiliation(s)
- Ercole L. Cavalieri
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198-6805, USA
- Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198-4388, USA
| | - Eleanor G. Rogan
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198-6805, USA
- Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198-4388, USA
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11
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Abstract
Immune responses can suppress tumorigenesis, but also contribute to cancer initiation and progression suggesting a complex interaction between the immune system and cancer. Epigenetic alterations, which are heritable changes in gene expression without changes to the DNA sequence, also play a role in carcinogenesis through silencing expression of tumor suppressor genes and activating oncogenic signaling. Interestingly, epithelial cells at sites of chronic inflammation undergo DNA methylation alterations that are similar to those present in cancer cells, suggesting that inflammation may initiate cancer-specific epigenetic changes in epithelial cells. Furthermore, epigenetic changes occur during immune cell differentiation and participate in regulating the immune response, including the regulation of inflammatory cytokines. Cancer cells utilize epigenetic silencing of immune-related genes to evade the immune response. This chapter will detail the interactions between inflammation and epigenetics in tumor initiation, promotion, and immune evasion and how these connections are being leveraged in cancer prevention and treatment.
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Affiliation(s)
- A R Maiuri
- Medical Sciences, Indiana University School of Medicine, Bloomington, IN, United States
| | - H M O'Hagan
- Medical Sciences, Indiana University School of Medicine, Bloomington, IN, United States; Indiana University Melvin and Bren Simon Cancer Center, Indianapolis, IN, United States.
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12
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Abstract
PURPOSE Cancer initialization can be explained as a result of parasitic virus energy consumption leading to randomized genome chemical bonding. MATERIALS AND METHODS Analysis of experimental data on cell-mediated immunity (CMI) containing about 12,000 cases of healthy humans, cancer patients and patients with precancerous cervical lesions disclosed that the specific cancer and the non-specific lactate dehydrogenase-elevating (LDH) virus antigen elicit similar responses. The specific antigen is effective only in cancer type of its origin but the non-specific antigen in all examined cancers. CMI results of CIN patients display both healthy and cancer state. The ribonucleic acid (RNA) of the LDH virus parasitizing on energy reduces the ratio of coherent/random oscillations. Decreased effect of coherent cellular electromagnetic field on bonding electrons in biological macromolecules leads to elevating probability of random genome reactions. RESULTS Overlapping of wave functions in biological macromolecules depends on energy of the cellular electromagnetic field which supplies energy to bonding electrons for selective chemical bonds. CMI responses of cancer and LDH virus antigens in all examined healthy, precancerous and cancer cases point to energy mechanism in cancer initiation. CONCLUSIONS Dependence of the rate of biochemical reactions on biological electromagnetic field explains yet unknown mechanism of genome mutation.
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Affiliation(s)
- Jiří Pokorný
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
| | - Jan Pokorný
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
| | - Anna Jandová
- b Institute of Photonics and Electronics, Czech Academy of Sciences , Prague , Czech Republic
| | - Jitka Kobilková
- c 1st Faculty of Medicine, Department of Obstetrics and Gynaecology , Charles University , Prague , Czech Republic
| | - Jan Vrba
- d Faculty of Electrical Engineering , Czech Technical University in Prague , Prague , Czech Republic
| | - Jan Vrba
- e Faculty of Biomedical Engineering , Czech Technical University in Kladno , Kladno , Czech Republic
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13
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Huang C, Wen B. Phenotype transformation of immortalized NCM460 colon epithelial cell line by TGF-β1 is associated with chromosome instability. Mol Biol Rep 2016; 43:1069-78. [PMID: 27401062 DOI: 10.1007/s11033-016-4038-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 07/06/2016] [Indexed: 12/21/2022]
Abstract
Transforming growth factor-β1 (TGF-β1) within tumor microenvironment has a pivotal function in cancer initiation and tumorigenesis, and hence this study was to observe the malignant transformation induced by TGF-β1 in an immortalized colon epithelial cell line NCM460 for better understanding the mechanisms of colon carcinogenesis. Immortalized colon epithelial cell line NCM460 was used as the model of this study, and was treated with different concentrations of TGF-β1 for different time. Then, immunofluorescence was performed to observe the change of phenotype hallmarks including adherent junction protein E-cadherin, cytoskeleton protein vimentin, and tight junction marker ZO-1, western blotting analysis was performed to detect the expression of the above three markers and two transcription factors (Snail and Slug) involved in the transformation by TGF-β1. In addition, chromosome instability (CHI) including analysis of DNA-ploid was detected by flow cytometry. Our results revealed significant loss or reduction of ZO-1 and E-cadherin, and robust emergence of vimentin in the cell line NCM460 after a 15-, 20-, and 25-day treatment with 10 ng/ml TGF-β1. Interestingly, 20 and 25 days after stimulation with 5 ng/ml TGF-β1, expression of E-cadherin and ZO-1 revealed a pattern roughly similar to that of 10 ng/ml TGF-β1, especially, both expressions was vanished and vimentin expression was dramatically increased at days 25 after TGF-β1 stimulation. After a stimulation with 10 ng/ml TGF-β1 for 15, 20, and 25 days, the levels of Snail and Slug expression in the cells were significantly up-regulated, compared with the cells treated with TGF-β1 inhibitor LY364947, PBS or balnk control (P < 0.01). Our results found that many abnormal mitotic patterns including lagging chromosomes and anaphase bridges in NCM460 cells were induced by TGF-β1 after its stimulation for 15, 20, and 25 days. Very few mitotic cells with treatment of PBS for 15, 20 and 25 days were non-diploid whose DNA content was greater or less than 4 N, but these cells were significantly increased after exposure to TGF-β1 for 15, 20, and 25 days, which was associated with the induction of hypo-diploid, hyper-diploid, and poly-diploid (P < 0.05).These data indicate that TGF-β1 induces a phenotypic transformation of normal colon epithelium similar to its pro-tumoral behaviors in TME, involving in alteration of chromosome stability.
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Foo J, Leder K, Ryser MD. Multifocality and recurrence risk: a quantitative model of field cancerization. J Theor Biol 2014; 355:170-84. [PMID: 24735903 PMCID: PMC4589890 DOI: 10.1016/j.jtbi.2014.02.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 02/13/2014] [Accepted: 02/24/2014] [Indexed: 10/25/2022]
Abstract
Primary tumors often emerge within genetically altered fields of premalignant cells that appear histologically normal but have a high chance of progression to malignancy. Clinical observations have suggested that these premalignant fields pose high risks for emergence of recurrent tumors if left behind after surgical removal of the primary tumor. In this work, we develop a spatio-temporal stochastic model of epithelial carcinogenesis, combining cellular dynamics with a general framework for multi-stage genetic progression to cancer. Using the model, we investigate how various properties of the premalignant fields depend on microscopic cellular properties of the tissue. In particular, we provide analytic results for the size-distribution of the histologically undetectable premalignant fields at the time of diagnosis, and investigate how the extent and the geometry of these fields depend upon key groups of parameters associated with the tissue and genetic pathways. We also derive analytical results for the relative risks of local vs. distant secondary tumors for different parameter regimes, a critical aspect for the optimal choice of post-operative therapy in carcinoma patients. This study contributes to a growing literature seeking to obtain a quantitative understanding of the spatial dynamics in cancer initiation.
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Affiliation(s)
- Jasmine Foo
- School of Mathematics, University of Minnesota, Minneapolis, MN, United States.
| | - Kevin Leder
- Industrial and Systems Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Marc D Ryser
- Department of Mathematics, Duke University, Durham, NC, United States
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