201
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Dasgupta A, Lim AR, Ghajar CM. Circulating and disseminated tumor cells: harbingers or initiators of metastasis? Mol Oncol 2017; 11:40-61. [PMID: 28085223 PMCID: PMC5423226 DOI: 10.1002/1878-0261.12022] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 12/12/2022] Open
Abstract
Tumor cells leave the primary tumor and enter the circulation. Once there, they are called circulating tumor cells (CTCs). A fraction of CTCs are capable of entering distant sites and persisting as disseminated tumor cells (DTCs). An even smaller fraction of DTCs are capable of progressing toward metastases. It is known that the DTC microenvironment plays an important role in sustaining their survival, regulating their growth, and conferring resistance to therapy. But we still have much to learn about the nature of these rare cell populations to predict which will progress and what exactly should cause concern for future relapse. Although recent technological advances in our ability to detect and molecularly and functionally characterize CTCs and DTCs promise to unravel this ambiguity, the timing of dissemination and the precise source of CTCs and DTCs profiled will impact the conclusions that can be made from these endeavors. In this review, we discuss the biology of CTCs and DTCs; the technologies to detect, isolate, and profile these cells; and the exceptions we must apply to our understanding of what role these cells play in the metastatic process. We conclude that a greater effort to understand the unique biology of these cells in context will positively impact our ability to use these cells to predict outcome, monitor treatment efficacy, and reveal therapeutically relevant targets to deplete these populations and ultimately prevent metastasis.
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Affiliation(s)
- Arko Dasgupta
- Public Health Sciences Division/Translational Research Program and Human Biology DivisionFred Hutchinson Cancer Research CenterSeattleWAUSA
| | - Andrea R. Lim
- Public Health Sciences Division/Translational Research Program and Human Biology DivisionFred Hutchinson Cancer Research CenterSeattleWAUSA
- Program in Molecular and Cellular BiologyUniversity of WashingtonSeattleWAUSA
| | - Cyrus M. Ghajar
- Public Health Sciences Division/Translational Research Program and Human Biology DivisionFred Hutchinson Cancer Research CenterSeattleWAUSA
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202
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203
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Bartosh TJ, Ullah M, Zeitouni S, Beaver J, Prockop DJ. Cancer cells enter dormancy after cannibalizing mesenchymal stem/stromal cells (MSCs). Proc Natl Acad Sci U S A 2016; 113:E6447-E6456. [PMID: 27698134 PMCID: PMC5081643 DOI: 10.1073/pnas.1612290113] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Patients with breast cancer often develop malignant regrowth of residual drug-resistant dormant tumor cells years after primary treatment, a process defined as cancer relapse. Deciphering the causal basis of tumor dormancy therefore has obvious therapeutic significance. Because cancer cell behavior is strongly influenced by stromal cells, particularly the mesenchymal stem/stromal cells (MSCs) that are actively recruited into tumor-associated stroma, we assessed the impact of MSCs on breast cancer cell (BCC) dormancy. Using 3D cocultures to mimic the cellular interactions of an emerging tumor niche, we observed that MSCs sequentially surrounded the BCCs, promoted formation of cancer spheroids, and then were internalized/degraded through a process resembling the well-documented yet ill-defined clinical phenomenon of cancer cell cannibalism. This suspected feeding behavior was less appreciable in the presence of a rho kinase inhibitor and in 2D monolayer cocultures. Notably, cannibalism of MSCs enhanced survival of BCCs deprived of nutrients but suppressed their tumorigenicity, together suggesting the cancer cells entered dormancy. Transcriptome profiles revealed that the resulting BCCs acquired a unique molecular signature enriched in prosurvival factors and tumor suppressors, as well as inflammatory mediators that demarcate the secretome of senescent cells, also referred to as the senescence-associated secretory phenotype. Overall, our results provide intriguing evidence that cancer cells under duress enter dormancy after cannibalizing MSCs. Importantly, our practical 3D coculture model could provide a valuable tool to understand the antitumor activity of MSCs and cell cannibalism further, and therefore open new therapeutic avenues for the prevention of cancer recurrence.
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Affiliation(s)
- Thomas J Bartosh
- Institute for Regenerative Medicine, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76502; Medical Physiology, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76504
| | - Mujib Ullah
- Institute for Regenerative Medicine, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76502
| | - Suzanne Zeitouni
- Institute for Regenerative Medicine, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76502
| | - Joshua Beaver
- Institute for Regenerative Medicine, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76502; Medical Physiology, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76504
| | - Darwin J Prockop
- Institute for Regenerative Medicine, College of Medicine, Texas A&M University System Health Science Center, Temple, TX 76502;
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204
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Kan C, Vargas G, Pape FL, Clézardin P. Cancer Cell Colonisation in the Bone Microenvironment. Int J Mol Sci 2016; 17:ijms17101674. [PMID: 27782035 PMCID: PMC5085707 DOI: 10.3390/ijms17101674] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/27/2016] [Accepted: 09/28/2016] [Indexed: 02/06/2023] Open
Abstract
Bone metastases are a common complication of epithelial cancers, of which breast, prostate and lung carcinomas are the most common. The establishment of cancer cells to distant sites such as the bone microenvironment requires multiple steps. Tumour cells can acquire properties to allow epithelial-to-mesenchymal transition, extravasation and migration. Within the bone metastatic niche, disseminated tumour cells may enter a dormancy stage or proliferate to adapt and survive, interacting with bone cells such as hematopoietic stem cells, osteoblasts and osteoclasts. Cross-talk with the bone may alter tumour cell properties and, conversely, tumour cells may also acquire characteristics of the surrounding microenvironment, in a process known as osteomimicry. Alternatively, these cells may also express osteomimetic genes that allow cell survival or favour seeding to the bone marrow. The seeding of tumour cells in the bone disrupts bone-forming and bone-resorbing activities, which can lead to macrometastasis in bone. At present, bone macrometastases are incurable with only palliative treatment available. A better understanding of how these processes influence the early onset of bone metastasis may give insight into potential therapies. This review will focus on the early steps of bone colonisation, once disseminated tumour cells enter the bone marrow.
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Affiliation(s)
- Casina Kan
- National Institute of Health and Medical Research (INSERM), UMR 1033, Lyon 69372, France.
- Faculty of Medicine RTH Laennec, University of Lyon, Villeurbanne 69372, France.
| | - Geoffrey Vargas
- National Institute of Health and Medical Research (INSERM), UMR 1033, Lyon 69372, France.
- Faculty of Medicine RTH Laennec, University of Lyon, Villeurbanne 69372, France.
| | - François Le Pape
- National Institute of Health and Medical Research (INSERM), UMR 1033, Lyon 69372, France.
- Faculty of Medicine RTH Laennec, University of Lyon, Villeurbanne 69372, France.
| | - Philippe Clézardin
- National Institute of Health and Medical Research (INSERM), UMR 1033, Lyon 69372, France.
- Faculty of Medicine RTH Laennec, University of Lyon, Villeurbanne 69372, France.
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205
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Velaei K, Samadi N, Barazvan B, Soleimani Rad J. Tumor microenvironment-mediated chemoresistance in breast cancer. Breast 2016; 30:92-100. [PMID: 27668856 DOI: 10.1016/j.breast.2016.09.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 09/02/2016] [Accepted: 09/02/2016] [Indexed: 12/20/2022] Open
Abstract
Therapy resistance or tumor relapse in cancer is common. Tumors develop resistance to chemotherapeutic through a variety of mechanisms, with tumor microenvironment (TM) serving pivotal roles. Using breast cancer as a paradigm, we propose that responses of cancer cells to drugs are not exclusively determined by their intrinsic characteristics but are also controlled by deriving signals from TM. Affected microenvironment by chemotherapy is an avenue to promote phenotype which tends to resist on to be ruined. Therefore, exclusively targeting cancer cells does not demolish tumor recurrence after chemotherapy. Regardless of tumor-microenvironment pathways and their profound influence on the responsiveness of treatment, diversity of molecular properties of breast cancer also behave differently in terms of response to chemotherapy. And also it is assumed that there is cross-talk between phenotypic diversity and TM. Collectively, raising complex signal from TM in chemotherapy condition often encourages cancer cells are not killed but strengthen. Here, we summarized how TM modifies responses to chemotherapy in breast cancer. We also discussed successful treatment strategies have been considered TM in breast cancer treatment.
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Affiliation(s)
- Kobra Velaei
- Department of Anatomical Science, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasser Samadi
- Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Balal Barazvan
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jafar Soleimani Rad
- Department of Anatomical Science, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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206
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In Vitro Growth Inhibitory Activities of Natural Products from Irciniid Sponges against Cancer Cells: A Comparative Study. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5318176. [PMID: 27597966 PMCID: PMC4997040 DOI: 10.1155/2016/5318176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 07/18/2016] [Indexed: 11/18/2022]
Abstract
Marine sponges of the Irciniidae family contain both bioactive furanosesterterpene tetronic acids (FTAs) and prenylated hydroquinones (PHQs). Both classes of compounds are known for their anti-inflammatory, antioxidant, and antimicrobial properties and known to display growth inhibitory effects against various human tumor cell lines. However, the different experimental conditions of the reported in vitro bioassays, carried out on different cancer cell lines within separate studies, prevent realistic actual discrimination between the two classes of compounds from being carried out in terms of growth inhibitory effects. In the present work, a chemical investigation of irciniid sponges from Tunisian coasts led to the purification of three known FTAs and three known PHQs. The in vitro growth inhibitory properties of the six purified compounds have been evaluated in the same experiment in a panel of five human and one murine cancer cell lines displaying various levels of sensitivity to proapoptotic stimuli. Surprisingly, FTAs and PHQs elicited distinct profiles of growth inhibitory-responses, differing by one to two orders of magnitude in favor of the PHQs in all cell lines. The obtained comparative results are discussed in the light of a better selection of drug candidates from natural sources.
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207
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Shologu N, Szegezdi E, Lowery A, Kerin M, Pandit A, Zeugolis DI. Recreating complex pathophysiologies in vitro with extracellular matrix surrogates for anticancer therapeutics screening. Drug Discov Today 2016; 21:1521-1531. [DOI: 10.1016/j.drudis.2016.06.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 05/17/2016] [Accepted: 06/01/2016] [Indexed: 12/12/2022]
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208
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The brain metastatic niche. J Mol Med (Berl) 2016; 93:1213-20. [PMID: 26489608 DOI: 10.1007/s00109-015-1357-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/12/2015] [Accepted: 10/14/2015] [Indexed: 12/13/2022]
Abstract
Metastasizing cancer cells that arrest in brain microvessels have to face an organ microenvironment that is alien, and exclusive. In order to survive and thrive in this foreign soil, the malignant cells need to successfully master a sequence of steps that includes close interactions with pre-existing brain microvessels, and other nonmalignant cell types. Unfortunately, a relevant number of circulating cancer cells is capable of doing so: brain metastasis is a frequent and devastating complication of solid tumors, becoming ever more important in times where the systemic tumor disease is better controlled and life of cancer patients is prolonged. Thus, it is very important to understand which environmental cues are necessary for effective brain colonization. This review gives an overview of the niches we know, including those who govern cancer cell dormancy, survival, and proliferation in the brain. Colonization of pre-existing niches related to stemness and resistance is a hallmark of successful brain metastasis. A deeper understanding of those host factors can help to identify the most vulnerable steps of the metastatic cascade, which might be most amenable to therapeutic interventions.
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209
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Linde N, Fluegen G, Aguirre-Ghiso JA. The Relationship Between Dormant Cancer Cells and Their Microenvironment. Adv Cancer Res 2016; 132:45-71. [PMID: 27613129 PMCID: PMC5342905 DOI: 10.1016/bs.acr.2016.07.002] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The majority of cancer deaths are due to metastases that can occur years or decades after primary tumor diagnosis and treatment. Disseminated tumor cells (DTCs) surviving in a dormant state in target organs appear to explain the timing of this phenomenon. Knowledge on this process is important as it might provide a window of opportunity to prevent recurrences by eradicating dormant DTCs and/or by maintaining DTCs in a dormant state. Importantly, this research might offer markers of dormancy for early monitoring of metastatic relapse. However, our understanding of the mechanisms underlying the regulation of entry into and exit from dormancy is still limited and crippling any therapeutic opportunity. While cancer cell-intrinsic signaling pathways have been linked to dormancy regulation, it is likely that these pathways and the switch controlling reactivation from dormancy are regulated by microenvironmental cues. Here we review and discuss recent findings on how the microenvironment regulates cancer dormancy and raise new questions that may help advance the field.
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Affiliation(s)
- N Linde
- Tisch Cancer Institute, Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY, United States.
| | - G Fluegen
- Tisch Cancer Institute, Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY, United States.
| | - J A Aguirre-Ghiso
- Tisch Cancer Institute, Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY, United States.
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210
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Hargreaves S, Comins C. Stereotactic Ablative Radiotherapy for Oligometastatic Disease: a Treatment in Search of Evidence – a Response. Clin Oncol (R Coll Radiol) 2016; 28:503-4. [DOI: 10.1016/j.clon.2016.04.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 04/06/2016] [Indexed: 10/21/2022]
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211
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Han HH, Kim BG, Lee JH, Kang S, Kim JE, Cho NH. Angiopoietin-2 promotes ER+ breast cancer cell survival in bone marrow niche. Endocr Relat Cancer 2016; 23:609-23. [PMID: 27353038 PMCID: PMC5064757 DOI: 10.1530/erc-16-0086] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 06/27/2016] [Indexed: 12/11/2022]
Abstract
In estrogen receptor-positive (ER+) breast cancer, it is recognized that metastases may develop after a long period of dormancy. Bone marrow (BM) vascular niche is where the dormant tumor cells are most likely to reside. So far, it is not fully understood why the dormant tumor cells become proliferative and eventually generate tumor. We hypothesized that therapeutic or menopause-related estrogen depletion may be the switch behind dormant ER+ tumor cell awakening in BM. We utilized an existing experimental model of BM endothelial niche that can simulate ER+ tumor cell dormancy to test our hypothesis. In results, estrogen depletion paradoxically promoted ER+ tumor cell proliferation in the BM endothelial niche, and their molecular phenotype shifted from dormant to awaken. Following estrogen depletion, the BM niche cells produced angiopoietin-2 (ANGPT2), which destabilized niche endothelium by interfering ANGPT1/Tie2 signaling, and promoted ER+ tumor cell survival under estrogen deficiency via cell surface integrin &1. Knockdown of ANGPT2 completely negated ER+ tumor cell awakening in the niche. Furthermore, ANGPT2 expression in ER+ tumor human samples was associated with increased risk of distant metastasis only in those who underwent adjuvant estrogen depletion therapy, not in those who did not undergo adjuvant therapy. In conclusion, we demonstrate that ANGPT2 signaling activated after estrogen depletion paradoxically triggers ER+ tumor cell awakening from dormancy in their BM niche, partly indirectly via endothelial Tie2 receptor and partly directly via tumor cell surface integrin &1.
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Affiliation(s)
- Hyun Ho Han
- Brain Korea 21 Plus Project for Medical ScienceYonsei University College of Medicine, Seoul, South Korea Department of PathologyYonsei University College of Medicine, Seoul, South Korea
| | - Baek Gil Kim
- Department of PathologyYonsei University College of Medicine, Seoul, South Korea
| | - Joo Hyun Lee
- Brain Korea 21 Plus Project for Medical ScienceYonsei University College of Medicine, Seoul, South Korea
| | - Suki Kang
- Department of PathologyYonsei University College of Medicine, Seoul, South Korea
| | - Ji Eun Kim
- Brain Korea 21 Plus Project for Medical ScienceYonsei University College of Medicine, Seoul, South Korea
| | - Nam Hoon Cho
- Brain Korea 21 Plus Project for Medical ScienceYonsei University College of Medicine, Seoul, South Korea Department of PathologyYonsei University College of Medicine, Seoul, South Korea Severance Biomedical Science Institute (SBSI)Yonsei University College of Medicine, Seoul, South Korea Global 5-5-10 System BiologyYonsei University, Seoul, South Korea
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212
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Melanoma dormancy in a mouse model is linked to GILZ/FOXO3A-dependent quiescence of disseminated stem-like cells. Sci Rep 2016; 6:30405. [PMID: 27465291 PMCID: PMC4964333 DOI: 10.1038/srep30405] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 07/05/2016] [Indexed: 12/12/2022] Open
Abstract
Metastatic cancer relapses following the reactivation of dormant, disseminated tumour cells; however, the cells and factors involved in this reactivation are just beginning to be identified. Using an immunotherapy-based syngeneic model of melanoma dormancy and GFP-labelled dormant cell-derived cell lines, we determined that vaccination against melanoma prevented tumour growth but did not prevent tumour cell dissemination or eliminate all tumour cells. The persistent disseminated melanoma tumour cells were quiescent and asymptomatic for one year. The quiescence/activation of these cells in vitro and the dormancy of melanoma in vivo appeared to be regulated by glucocorticoid-induced leucine zipper (GILZ)-mediated immunosuppression. GILZ expression was low in dormant cell-derived cultures, and re-expression of GILZ inactivated FOXO3A and its downstream target, p21CIP1. The ability of dormancy-competent cells to re-enter the cell cycle increased after a second round of cellular dormancy in vivo in association with shortened tumour dormancy period and faster and more aggressive melanoma relapse. Our data indicate that future cancer treatments should be adjusted according to the stage of disease progression.
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213
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Packer JR, Maitland NJ. The molecular and cellular origin of human prostate cancer. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:1238-60. [DOI: 10.1016/j.bbamcr.2016.02.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/17/2016] [Accepted: 02/22/2016] [Indexed: 01/01/2023]
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214
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Abstract
During the past decade preclinical studies have defined many of the mechanisms used by tumours to hijack the skeleton and promote bone metastasis. This has led to the development and widespread clinical use of bone-targeted drugs to prevent skeletal-related events. This understanding has also identified a critical dependency between colonizing tumour cells and the cells of bone. This is particularly important when tumour cells first arrive in bone, adapt to their new microenvironment and enter a long-lived dormant state. In this Review, we discuss the role of different bone cell types in supporting disseminated tumour cell dormancy and reactivation, and highlight the new opportunities this provides for targeting the bone microenvironment to control dormancy and bone metastasis.
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Affiliation(s)
- Peter I Croucher
- Division of Bone Biology, Garvan Institute of Medical Research, 384 Victoria Street, Sydney, New South Wales 2010, Australia
- St Vincent's Clinical School, University of New South Wales Medicine, Sydney, New South Wales 2052, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales Australia, Sydney, New South Wales 2052, Australia
| | - Michelle M McDonald
- Division of Bone Biology, Garvan Institute of Medical Research, 384 Victoria Street, Sydney, New South Wales 2010, Australia
- St Vincent's Clinical School, University of New South Wales Medicine, Sydney, New South Wales 2052, Australia
| | - T John Martin
- St Vincent's Institute of Medical Research, 9 Princes Street, Fitzroy, Melbourne, Victoria 3065, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital, Melbourne, Victoria 3065, Australia
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215
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Abstract
Primary tumors are known to constantly shed a large number of cancer cells into systemic dissemination, yet only a tiny fraction of these cells is capable of forming overt metastases. The tremendous rate of attrition during the process of metastasis implicates the existence of a rare and unique population of metastasis-initiating cells (MICs). MICs possess advantageous traits that may originate in the primary tumor but continue to evolve during dissemination and colonization, including cellular plasticity, metabolic reprogramming, the ability to enter and exit dormancy, resistance to apoptosis, immune evasion, and co-option of other tumor and stromal cells. Better understanding of the molecular and cellular hallmarks of MICs will facilitate the development and deployment of novel therapeutic strategies.
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Affiliation(s)
- Toni Celià-Terrassa
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
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216
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Lund T. Treatment Opportunities for Colorectal Liver Metastases. EUROPEAN MEDICAL JOURNAL 2016. [DOI: 10.33590/emj/10311794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Colorectal liver metastases (CLM) are the most common hepatic malignancy and are caused by disseminated tumour cells (DTCs) seeded early in the tumourigenesis of colorectal cancer. Despite optimal treatment, CLM are associated with high mortality rates. This review provides an overview of three promising strategies to extend survival in CLM: treatment of DTCs, immunotherapy, and new surgical resection techniques.
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Affiliation(s)
- Tormod Lund
- Surgical Department, Vestre Viken Hospital Trust, Drammen, Norway
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217
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Hurst RE, Bastian A, Bailey-Downs L, Ihnat MA. Targeting dormant micrometastases: rationale, evidence to date and clinical implications. Ther Adv Med Oncol 2016; 8:126-37. [PMID: 26929788 DOI: 10.1177/1758834015624277] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In spite of decades of research, cancer survival has increased only modestly. This is because most research is based on models of primary tumors. Slow recognition has begun that disseminated, dormant cancer cells (micrometastatic cells) that are generally resistant to chemotherapy are the culprits in recurrence, and until these are targeted effectively we can expect only slow progress in increasing overall survival from cancer. This paper reviews efforts to understand the mechanisms by which cancer cells can become dormant, and thereby identify potential targets and drugs either on the market or in clinical trials that purport to prevent metastasis. This review targets the most recent literature because several excellent reviews have covered the literature from more than two years ago. The paper also describes recent work in the authors' laboratories to develop a screening-based approach that does not require understanding of mechanisms of action or the molecular target. Success of this approach shows that targeting micrometastatic cells is definitely feasible.
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Affiliation(s)
- Robert E Hurst
- Oklahoma University Health Sciences Center, 105 BMSB, 940 SL Young Boulevard, Oklahoma City, OK 73104, USA
| | - Anja Bastian
- Physiology, College of Medicine, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
| | | | - Michael A Ihnat
- Department of Pharmaceutical Sciences, College of Pharmacy, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
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218
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van der Toom EE, Verdone JE, Pienta KJ. Disseminated tumor cells and dormancy in prostate cancer metastasis. Curr Opin Biotechnol 2016; 40:9-15. [PMID: 26900985 DOI: 10.1016/j.copbio.2016.02.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 01/30/2016] [Accepted: 02/02/2016] [Indexed: 12/20/2022]
Abstract
It has been reported that disseminated tumor cells (DTCs) can be found in the majority of prostate cancer (PCa) patients, even at the time of primary treatment with no clinical evidence of metastatic disease. This suggests that these cells escaped the primary tumor early in the disease and exist in a dormant state in distant organs until they develop in some patients as overt metastases. Understanding the mechanisms by which cancer cells exit the primary tumor, survive the circulation, settle in a distant organ, and exist in a quiescent state is critical to understanding tumorigenesis, developing new prognostic assays, and designing new therapeutic modalities to prevent and treat clinical metastases.
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Affiliation(s)
- Emma E van der Toom
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD, USA; VUmc School of Medical Sciences, VU University, Amsterdam, The Netherlands
| | - James E Verdone
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Kenneth J Pienta
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD, USA; Department of Oncology, Johns Hopkins School of Medicine, Baltimore, MD, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA.
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219
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Barney LE, Jansen LE, Polio SR, Galarza S, Lynch ME, Peyton SR. The Predictive Link between Matrix and Metastasis. Curr Opin Chem Eng 2016; 11:85-93. [PMID: 26942108 DOI: 10.1016/j.coche.2016.01.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cancer spread (metastasis) is responsible for 90% of cancer-related fatalities. Informing patient treatment to prevent metastasis, or kill all cancer cells in a patient's body before it becomes metastatic is extremely powerful. However, aggressive treatment for all non-metastatic patients is detrimental, both for quality of life concerns, and the risk of kidney or liver-related toxicity. Knowing when and where a patient has metastatic risk could revolutionize patient treatment and care. In this review, we attempt to summarize the key work of engineers and quantitative biologists in developing strategies and model systems to predict metastasis, with a particular focus on cell interactions with the extracellular matrix (ECM), as a tool to predict metastatic risk and tropism.
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Affiliation(s)
- L E Barney
- Department of Chemical Engineering, University of Massachusetts, Amherst Amherst, MA 01003
| | - L E Jansen
- Department of Chemical Engineering, University of Massachusetts, Amherst Amherst, MA 01003
| | - S R Polio
- Department of Chemical Engineering, University of Massachusetts, Amherst Amherst, MA 01003
| | - S Galarza
- Department of Chemical Engineering, University of Massachusetts, Amherst Amherst, MA 01003
| | - M E Lynch
- Department of Chemical Engineering, University of Massachusetts, Amherst Amherst, MA 01003; Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst Amherst, MA 01003
| | - S R Peyton
- Department of Chemical Engineering, University of Massachusetts, Amherst Amherst, MA 01003
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220
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Pérez-Velázquez J, Gevertz JL, Karolak A, Rejniak KA. Microenvironmental Niches and Sanctuaries: A Route to Acquired Resistance. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 936:149-164. [PMID: 27739047 DOI: 10.1007/978-3-319-42023-3_8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A tumor vasculature that is functionally abnormal results in irregular gradients of metabolites and drugs within the tumor tissue. Recently, significant efforts have been committed to experimentally examine how cellular response to anti-cancer treatments varies based on the environment in which the cells are grown. In vitro studies point to specific conditions in which tumor cells can remain dormant and survive the treatment. In vivo results suggest that cells can escape the effects of drug therapy in tissue regions that are poorly penetrated by the drugs. Better understanding how the tumor microenvironments influence the emergence of drug resistance in both primary and metastatic tumors may improve drug development and the design of more effective therapeutic protocols. This chapter presents a hybrid agent-based model of the growth of tumor micrometastases and explores how microenvironmental factors can contribute to the development of acquired resistance in response to a DNA damaging drug. The specific microenvironments of interest in this work are tumor hypoxic niches and tumor normoxic sanctuaries with poor drug penetration. We aim to quantify how spatial constraints of limited drug transport and quiescent cell survival contribute to the development of drug resistant tumors.
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Affiliation(s)
- Judith Pérez-Velázquez
- Mathematical Modeling of Biological Systems, Centre for Mathematical Science, Technical University of Munich, Garching, Germany.
| | - Jana L Gevertz
- Department of Mathematics and Statistics, The College of New Jersey, Ewing, NJ, USA
| | - Aleksandra Karolak
- Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | - Katarzyna A Rejniak
- Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA.,Department of Oncologic Sciences, College of Medicine, University of South Florida, Tampa, FL, USA
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221
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Talukdar S, Emdad L, Das S, Sarkar D, Fisher P. Evolving Strategies for Therapeutically Targeting Cancer Stem Cells. Adv Cancer Res 2016; 131:159-91. [PMID: 27451127 DOI: 10.1016/bs.acr.2016.04.003] [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] [Indexed: 12/17/2022]
Abstract
Cancer is a multifactor and multistep process that is affected intrinsically by the genetic and epigenetic makeup of tumor cells and extrinsically by the host microenvironment and immune system. A key component of cancer involves a unique subpopulation of highly malignant cancerous cells referred to as cancer stem cells (CSCs). CSCs are positioned at the apex of the tumor hierarchy with an ability to both self-renew and also generate non-CSC/differentiated progeny, which contribute to the majority of the tumor mass. CSCs undergo functional changes and show plasticity that is stimulated by specific microenvironmental cues and interactions in the tumor niche, which contribute to the complexity and heterogeneity of the CSC population. The prognostic value of CSCs in the clinic is evident since there are many examples in which CSCs serve as markers for poor patient prognosis. CSCs are innately resistant to many standard therapies and they display anoikis resistance, immune evasion, tumor dormancy, and field cancerization, which may result in metastasis and relapse. Many academic laboratories and biotechnology companies are currently focusing on strategies that target CSCs. Combination therapies, epigenetic modifiers, stemness inhibitors, CSC surface marker-based therapies, and immunotherapy-based CSC-targeting drugs are currently undergoing clinical trials. Potential new targets/strategies in CSC-targeted therapy include MDA-9/Syntenin (SDCBP), Patched (PTCH), epigenetic targets, noncoding RNAs, and differentiation induction. Defining ways of targeting and destroying CSCs holds potential to impact significantly on cancer therapy, including prevention of metastasis and cancer recurrence.
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222
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Senft D, Ronai ZA. Immunogenic, cellular, and angiogenic drivers of tumor dormancy--a melanoma view. Pigment Cell Melanoma Res 2015; 29:27-42. [PMID: 26514653 DOI: 10.1111/pcmr.12432] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/27/2015] [Indexed: 12/27/2022]
Abstract
In tumor cells, the ability to maintain viability over long time periods without proliferation is referred to as a state of dormancy. Maintenance of dormancy is controlled by numerous cellular and environmental factors, from immune surveillance and tumor-stroma interaction to intracellular signaling. Interference of dormancy (to an 'awaken' state) is associated with reduced response to therapy, resulting in relapse or in metastatic burst. Thus, maintaining a dormant state should prolong therapeutic responses and delay metastasis. Technical obstacles in studying tumor dormancy have limited our understanding of underlying mechanisms and hampered our ability to target dormant cells. In this review, we summarize the progress of research in the field of immunogenic, angiogenic, and cellular dormancy in diverse malignancies with particular attention to our current understanding in melanoma.
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Affiliation(s)
- Daniela Senft
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Ze'ev A Ronai
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
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223
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Pein M, Oskarsson T. Microenvironment in metastasis: roadblocks and supportive niches. Am J Physiol Cell Physiol 2015; 309:C627-38. [DOI: 10.1152/ajpcell.00145.2015] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In many cancers, malignant cells can spread from the primary tumor through blood circulation and initiate metastasis in secondary organs. Metastatic colonization may depend not only on inherent properties of cancer cells, but also on suitable microenvironments in distant sites. Increasing evidence suggests that the nature of the microenvironment may determine the fate of disseminated cancer cells, providing either hindrance or support for cancer cell propagation. This can result in strong selective pressure where the vast majority of cancer cells, invading a secondary organ, are either eliminated or maintained in a dormant state. The ability of cancer cells to fend off or circumvent anti-metastatic signals from the stroma and the capacity to manipulate the local microenvironment towards a supporting environment, a metastatic niche, may be essential for metastatic growth. The molecular interactions between cancer cells and the stroma are still enigmatic, but recent studies are beginning to reveal their nature. Here, we discuss the interactive relationship between metastatic cancer cells and host stroma, involving selection and adaptation of metastasis-initiating cells and host tissue remodeling. Understanding the dynamic and continuously evolving cross talk between metastatic cancer cells and the stroma may be crucial when developing cancer treatments.
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Affiliation(s)
- Maren Pein
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM gGmbH), Heidelberg, Germany
- Cell Biology and Tumor Biology Program, German Cancer Research Center (DKFZ), Heidelberg, Germany; and
| | - Thordur Oskarsson
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM gGmbH), Heidelberg, Germany
- Cell Biology and Tumor Biology Program, German Cancer Research Center (DKFZ), Heidelberg, Germany; and
- German Cancer Consortium (DKTK), Heidelberg, Germany
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224
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Kremer R. Osteoporosis treatment may benefit breast cancer patients. WOMENS HEALTH 2015; 11:789-92. [PMID: 26541855 DOI: 10.2217/whe.15.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Richard Kremer
- Department of Medicine, Calcium Research Laboratories, McGill University Health Centre, The Glen, 1001 Decarie Boulevard, Montreal, QC H4A 3J1, Canada
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225
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Jin X, Mu P. Targeting Breast Cancer Metastasis. BREAST CANCER-BASIC AND CLINICAL RESEARCH 2015; 9:23-34. [PMID: 26380552 PMCID: PMC4559199 DOI: 10.4137/bcbcr.s25460] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 08/06/2015] [Accepted: 08/10/2015] [Indexed: 12/31/2022]
Abstract
Metastasis is the leading cause of breast cancer-associated deaths. Despite the significant improvement in current therapies in extending patient life, 30–40% of patients may eventually suffer from distant relapse and succumb to the disease. Consequently, a deeper understanding of the metastasis biology is key to developing better treatment strategies and achieving long-lasting therapeutic efficacies against breast cancer. This review covers recent breakthroughs in the discovery of various metastatic traits that contribute to the metastasis cascade of breast cancer, which may provide novel avenues for therapeutic targeting.
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Affiliation(s)
- Xin Jin
- Cancer Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA. ; Institute for Medical Engineering & Science (IMES), Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ping Mu
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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226
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Arresting the Colonial Destiny of Metastatic Seeds with DNA Aptamers. Mol Ther 2015; 23:982-984. [DOI: 10.1038/mt.2015.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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227
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Abstract
Metastatic disease is responsible for 90% of death from solid tumors. However, only a minority of metastasis-specific targets has been exploited therapeutically, and effective prevention and suppression of metastatic disease is still an elusive goal. In this review, we will first summarize the current state of knowledge about the molecular features of the disease, with particular focus on steps and targets potentially amenable to therapeutic intervention. We will then discuss the reasons underlying the paucity of metastatic drugs in the current oncological arsenal and potential ways to overcome this therapeutic gap. We reason that the discovery of novel promising targets, an increased understanding of the molecular features of the disease, the effect of disruptive technologies, and a shift in the current preclinical and clinical settings have the potential to create more successful drug development endeavors.
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Affiliation(s)
- Yari Fontebasso
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Steven M Dubinett
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA
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