51
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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52
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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53
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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54
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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55
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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56
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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57
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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58
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Öhlund D, Elyada E, Tuveson D. Fibroblast heterogeneity in the cancer wound. J Exp Med 2014. [DOI: 10.1084/jem.20140692 order by 1-- eloc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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59
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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60
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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61
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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62
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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63
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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64
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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65
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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66
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Abstract
Fibroblasts regulate the structure and function of healthy tissues, participate transiently in tissue repair after acute inflammation, and assume an aberrant stimulatory role during chronic inflammatory states including cancer. Such cancer-associated fibroblasts (CAFs) modulate the tumor microenvironment and influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. These pleiotropic functions highlight the inherent plasticity of fibroblasts and may provide new avenues to understand and therapeutically intervene in malignancies. We discuss the emerging themes of CAF biology in the context of tumorigenesis and therapy.
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Affiliation(s)
- Daniel Öhlund
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ela Elyada
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - David Tuveson
- D. Öhlund, E. Elyada, and D. Tuveson are at the Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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67
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Weiss GJ, Ganeshan B, Miles KA, Campbell DH, Cheung PY, Frank S, Korn RL. Noninvasive image texture analysis differentiates K-ras mutation from pan-wildtype NSCLC and is prognostic. PLoS One 2014; 9:e100244. [PMID: 24987838 PMCID: PMC4079229 DOI: 10.1371/journal.pone.0100244] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 05/25/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Non-invasive characterization of a tumor's molecular features could enhance treatment management. Quantitative computed tomography (CT) based texture analysis (QTA) has been used to derive tumor heterogeneity information, and the appearance of the tumors has been shown to relate to patient outcome in non-small cell lung cancer (NSCLC) and other cancers. In this study, we examined the potential of tumoral QTA to differentiate K-ras mutant from pan-wildtype tumors and its prognostic potential using baseline pre-treatment non-contrast CT imaging in NSCLC. METHODS Tumor DNA from patients with early-stage NSCLC was analyzed on the LungCarta Panel. Cases with a K-ras mutation or pan-wildtype for 26 oncogenes and tumor suppressor genes were selected for QTA. QTA was applied to regions of interest in the primary tumor. Non-parametric Mann Whitney test assessed the ability of the QTA, clinical and patient characteristics to differentiate between K-ras mutation from pan-wildtype. A recursive decision tree was developed to determine whether the differentiation of K-ras mutant from pan-wildtype tumors could be improved by sequential application of QTA parameters. Kaplan-Meier survival analysis assessed the ability of these markers to predict survival. RESULTS QTA was applied to 48 cases identified, 27 had a K-ras mutation and 21 cases were pan-wildtype. Positive skewness and lower kurtosis were significantly associated with the presence of a K-ras mutation. A five node decision tree had sensitivity, specificity, and accuracy values (95% CI) of 96.3% (78.1-100), 81.0% (50.5-97.4), and 89.6% (72.9-97.0); respectively. Kurtosis was a significant predictor of OS and DFS, with a lower kurtosis value linked with poorer survival. CONCLUSIONS Lower kurtosis and positive skewness are significantly associated with K-ras mutations. A QTA feature such as kurtosis is prognostic for OS and DFS. Non-invasive QTA can differentiate the presence of K-ras mutation from pan-wildtype NSCLC and is associated with patient survival.
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Affiliation(s)
- Glen J. Weiss
- Cancer Treatment Centers of America, Goodyear, Arizona, United States of America
- The Translational Genomics Research Institute (TGen), Phoenix, Arizona, United States of America
| | - Balaji Ganeshan
- Institute of Nuclear Medicine, University College London, United Kingdom
| | - Kenneth A. Miles
- Institute of Nuclear Medicine, University College London, United Kingdom
| | - David H. Campbell
- Imaging Endpoints Core Lab, Scottsdale, Arizona, United States of America
| | - Philip Y. Cheung
- The Translational Genomics Research Institute (TGen), Phoenix, Arizona, United States of America
| | - Samuel Frank
- Virginia G. Piper Cancer Center Clinical Trials at Scottsdale Healthcare, Scottsdale, Arizona, United States of America
| | - Ronald L. Korn
- Imaging Endpoints Core Lab, Scottsdale, Arizona, United States of America
- Virginia G. Piper Cancer Center Clinical Trials at Scottsdale Healthcare, Scottsdale, Arizona, United States of America
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68
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The prognostic significance of cancer-associated fibroblasts in esophageal squamous cell carcinoma. PLoS One 2014; 9:e99955. [PMID: 24945657 PMCID: PMC4063790 DOI: 10.1371/journal.pone.0099955] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 05/20/2014] [Indexed: 12/20/2022] Open
Abstract
Background Cancer-associated fibroblasts (CAF) are activated fibroblasts in the cancer stroma and play an important role in cancer progression. Some reports have indicated the correlation between the expression of CAF markers and adverse prognosis in several cancers. However, no reports have studied CAF phenotype and its clinical relevance in esophageal squamous cell carcinoma (ESCC). Methods We investigated CAF phenotype of ESCC based on histology and immunohistochemical expressions of five CAF markers such as fibroblast activation protein (FAP), smooth muscle actin (SMA), fibroblast-specific protein-1 (FSP1), platelet-derived growth factor receptor (PDGFRα), and PDGFRβ in 116 ESCC tissue samples. Besides, we also examined the correlation of the CAF phenotype with clinical relevance as well as other cancer-microenvironment related factors. Results Histologically immature CAF phenotype was correlated with poor prognosis (p<0.001) and associated with increased microvessel density, increased tumor associated macrophages, and epithelial to mesenchymal transition. CAF markers were characteristically expressed in stromal fibroblast close to tumor cells and the expression pattern of 5 CAF markers was highly heterogeneous in every individual cases. Of five CAF markers, SMA, FSP1, and PDGFRα were unfavorable prognostic indicators of ESCC. The number of positive CAF markers was greater in ESCC with immature CAFs than in those with mature ones. Conclusions Our results demonstrate that histologic classification of CAF phenotype is a reliable and significant prognostic predictor in ESCC. CAF markers have the potential to be diagnostic and therapeutic targets in ESCC.
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69
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Zhang Y, Qiang JW, Ye JD, Ye XD, Zhang J. High resolution CT in differentiating minimally invasive component in early lung adenocarcinoma. Lung Cancer 2014; 84:236-41. [DOI: 10.1016/j.lungcan.2014.02.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 01/13/2014] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
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70
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L. Berg E, Hsu YC, Lee JA. Consideration of the cellular microenvironment: physiologically relevant co-culture systems in drug discovery. Adv Drug Deliv Rev 2014; 69-70:190-204. [PMID: 24524933 DOI: 10.1016/j.addr.2014.01.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/16/2014] [Accepted: 01/28/2014] [Indexed: 01/15/2023]
Abstract
There is renewed interest in phenotypic approaches to drug discovery, using cell-based assays to select new drugs, with the goal of improving pharmaceutical success. Assays that are more predictive of human biology can help researchers achieve this goal. Primary cells are more physiologically relevant to human biology and advances are being made in methods to expand the available cell types and improve the potential clinical translation of these assays through the use of co-cultures or three-dimensional (3D) technologies. Of particular interest are assays that may be suitable for industrial scale drug discovery. Here we review the use of primary human cells and co-cultures in drug discovery and describe the characteristics of co-culture models for inflammation biology (BioMAP systems), neo-vascularization and tumor microenvironments. Finally we briefly describe technical trends that may enable and impact the development of physiologically relevant co-culture assays in the near future.
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71
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Correlations between tumor stroma characters and dynamic enhanced MDCT findings in nodular pulmonary adenocarcinoma. J Comput Assist Tomogr 2014; 38:82-8. [PMID: 24378886 DOI: 10.1097/rct.0b013e3182a38ad5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study aimed to evaluate correlations between tumor stroma characters and dynamic contrast-enhanced computed tomographic (CT) findings in nodular pulmonary adenocarcinoma. METHODS Thirty-three patients with nodular pulmonary adenocarcinoma underwent dynamic contrast-enhancement CT scan before surgery. CT findings include wash-in, wash-out, and distribution of enhancement. The proportion of invasive and noninvasive stroma in tumor was calculated. RESULTS Invasive and noninvasive stroma proportion in tumor was correlated positively with wash-in and wash-out enhancement, respectively. CONCLUSIONS Tumor stroma proliferation may explain the pathologic basis of CT dynamic enhancement and be a useful prognostic factor of pulmonary adenocarcinoma.
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72
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Downey CL, Simpkins SA, White J, Holliday DL, Jones JL, Jordan LB, Kulka J, Pollock S, Rajan SS, Thygesen HH, Hanby AM, Speirs V. The prognostic significance of tumour-stroma ratio in oestrogen receptor-positive breast cancer. Br J Cancer 2014; 110:1744-7. [PMID: 24548861 PMCID: PMC3974086 DOI: 10.1038/bjc.2014.69] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 01/14/2014] [Accepted: 01/16/2014] [Indexed: 11/16/2022] Open
Abstract
Background: A high percentage of stroma predicts poor survival in triple-negative breast cancers but is diminished in studies of unselected cases. We determined the prognostic significance of tumour–stroma ratio (TSR) in oestrogen receptor (ER)-positive male and female breast carcinomas. Methods: TSR was measured in haematoxylin and eosin-stained tissue sections (118 female and 62 male). Relationship of TSR (cutoff 49%) to overall survival (OS) and relapse-free survival (RFS) was analysed. Results: Tumours with ⩾49% stroma were associated with better survival in female (OS P=0.008, HR=0.2–0.7; RFS P=0.006, HR=0.1–0.6) and male breast cancer (OS P=0.005, HR=0.05–0.6; RFS P=0.01, HR=0.87–5.6), confirmed in multivariate analysis. Conclusions: High stromal content was related to better survival in ER-positive breast cancers across both genders, contrasting data in triple-negative breast cancer and highlighting the importance of considering ER status when interpreting the prognostic value of TSR.
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Affiliation(s)
- C L Downey
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - S A Simpkins
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - J White
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - D L Holliday
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - J L Jones
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - L B Jordan
- Department of Pathology, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
| | - J Kulka
- 2nd Department of Pathology, Semmelweis University, Üllőiút. 93, Budapest 1091, Hungary
| | - S Pollock
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - S S Rajan
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - H H Thygesen
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - A M Hanby
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
| | - V Speirs
- Leeds Institute of Cancer and Pathology, University of Leeds, St James's University Hospital, Leeds LS9 7TF, UK
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73
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E-Cadherin and EpCAM expression by NSCLC tumour cells associate with normal fibroblast activation through a pathway initiated by integrin αvβ6 and maintained through TGFβ signalling. Oncogene 2014; 34:704-16. [PMID: 24488011 DOI: 10.1038/onc.2013.600] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 11/20/2013] [Accepted: 12/13/2013] [Indexed: 12/27/2022]
Abstract
Fibroblasts in the tumour stroma (cancer-associated fibroblasts) influence tumour progression and response to therapeutics; little is known about the mechanisms through which the tumour cell co-opts a normal fibroblast. To study the activation of fibroblasts by tumour cells, a panel of non-small cell lung cancer (NSCLC) cell lines and normal human dermal fibroblasts were co-cultured. A subset of the NSCLC cells induced an activated cancer-associated fibroblast-like fibroblast phenotype defined by induction of fibroblast α-smooth muscle actin expression. Tumour cells that activated fibroblasts were associated with E-Cadherin and EpCAM expression and expression of integrin αvβ6. Co-culture of activating tumour cells with fibroblasts resulted in induction of transcripts associated with tumour cell invasion and growth, TGFβ1 and TGFBR1, SERPINE-1, BMP6, SPHK1 and MMP9. Fibroblast activation was inhibited by an αvβ6/8 integrin blocking antibody (264RAD) and a small molecule inhibitor of the TGF-beta type I receptor activin-like kinase (ALK5) (SB431542), demonstrating that transactivation of the TGFβ pathway initiates fibroblast activation. Both integrin and ALK5 antagonists inhibited initiation. Only ALK5 was effective when added after 3 days of co-culture. This suggests that although activation is αvβ6-dependent, once fibroblasts are activated alternative TGFβ pathway regulators maintain an activation loop. In co-culture activating cells had reduced sensitivity to selumetinib, AZD8931 and afatinib compared with mono-culture. In contrast, non-activating cells were insensitive to selumetinib and AZD8931 in both mono-culture and co-culture. In conclusion NSCLC cell lines, positive for E-Cadherin, EpCAM and αvβ6 expression, activate normal fibroblasts through avβ6/TGFβ signalling in vitro, and influence both gene expression and response to therapeutic agents.
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Jain M, Narula N, Aggarwal A, Stiles B, Shevchuk MM, Sterling J, Salamoon B, Chandel V, Webb WW, Altorki NK, Mukherjee S. Multiphoton microscopy: a potential "optical biopsy" tool for real-time evaluation of lung tumors without the need for exogenous contrast agents. Arch Pathol Lab Med 2013; 138:1037-47. [PMID: 24199831 DOI: 10.5858/arpa.2013-0122-oa] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT Multiphoton microscopy (MPM) is an emerging, nonlinear, optical-biopsy technique, which can generate subcellular-resolution images from unprocessed and unstained tissue in real time. OBJECTIVE To assess the potential of MPM for lung tumor diagnosis. DESIGN Fresh sections from tumor and adjacent nonneoplastic lung were imaged with MPM and then compared with corresponding hematoxylin-eosin slides. RESULTS Alveoli, bronchi, blood vessels, pleura, smokers' macrophages, and lymphocytes were readily identified with MPM in nonneoplastic tissue. Atypical adenomatous hyperplasia (a preinvasive lesion) was identified in tissue adjacent to the tumor in one case. Of the 25 tumor specimens used for blinded pathologic diagnosis, 23 were diagnosable with MPM. Of these 23 cases, all but one adenocarcinoma (15 of 16; 94%) was correctly diagnosed on MPM, along with their histologic patterns. For squamous cell carcinoma, 4 of 7 specimens (57%) were correctly diagnosed. For the remaining 3 squamous cell carcinoma specimens, the solid pattern was correctly diagnosed in 2 additional cases (29%), but it was not possible to distinguish the squamous cell carcinoma from adenocarcinoma. The other squamous cell carcinoma specimen (1 of 7; 14%) was misdiagnosed as adenocarcinoma because of pseudogland formation. Invasive adenocarcinomas with acinar and solid pattern showed statistically significant increases in collagen. Interobserver agreement for collagen quantification (among 3 observers) was 80%. CONCLUSIONS Our pilot study provides a proof of principle that MPM can differentiate neoplastic from nonneoplastic lung tissue and identify tumor subtypes. If confirmed in a future, larger study, we foresee real-time intraoperative applications of MPM, using miniaturized instruments for directing lung biopsies, assessing their adequacy for subsequent histopathologic analysis or banking, and evaluating surgical margins in limited lung resections.
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Affiliation(s)
- Manu Jain
- From the Departments of Urology (Dr Jain), Pathology and Laboratory Medicine (Drs Narula and Shevchuk), Biochemistry (Drs Aggarwal and Mukherjee, Mr Sterling, and Mr Salamoon), Thoracic Surgery (Drs Stiles and Altorki), and Surgery (Mr Chandel), Weill Cornell Medical College, New York, New York; and the School of Applied and Engineering Physics, Cornell University, Ithaca, New York (Dr Webb). Dr Aggarwal is now with the Department of Science, Borough of Manhattan Community College, New York
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75
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Detterbeck FC, Postmus PE, Tanoue LT. The stage classification of lung cancer: Diagnosis and management of lung cancer, 3rd ed: American College of Chest Physicians evidence-based clinical practice guidelines. Chest 2013; 143:e191S-e210S. [PMID: 23649438 DOI: 10.1378/chest.12-2354] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The current Lung Cancer Stage Classification system is the seventh edition, which took effect in January 2010. This article reviews the definitions for the TNM descriptors and the stage grouping in this system.
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Affiliation(s)
| | - Pieter E Postmus
- Department of Pulmonary Diseases, VU University Medical Center, Amsterdam, The Netherlands
| | - Lynn T Tanoue
- Section of Pulmonary and Critical Care Medicine, Yale School of Medicine, New Haven, CT
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76
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Quante M, Varga J, Wang TC, Greten FR. The gastrointestinal tumor microenvironment. Gastroenterology 2013; 145:63-78. [PMID: 23583733 PMCID: PMC4012393 DOI: 10.1053/j.gastro.2013.03.052] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/27/2013] [Accepted: 03/28/2013] [Indexed: 12/11/2022]
Abstract
Over the past decade, the microenvironment of gastrointestinal tumors has gained increasing attention because it is required for tumor initiation, progression, and metastasis. The tumor microenvironment has many components and has been recognized as one of the major hallmarks of epithelial cancers. Although therapeutic strategies for gastrointestinal cancer have previously focused on the epithelial cell compartment, there is increasing interest in reagents that alter the microenvironment, based on reported interactions among gastrointestinal epithelial, stromal, and immune cells during gastrointestinal carcinogenesis. We review the different cellular components of the gastrointestinal tumor microenvironment and their functions in carcinogenesis and discuss how improving our understanding of the complex stromal network could lead to new therapeutic strategies.
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Affiliation(s)
- Michael Quante
- II. Medizinische Klinik, Klinikum rechts der Isar, Technische Universität München, München, Germany.
| | - Julia Varga
- Institut für Molekulare Immunologie, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - Timothy C Wang
- Department of Medicine and Irving Cancer Research Center, Columbia University Medical Center, New York, New York
| | - Florian R Greten
- Institut für Molekulare Immunologie, Klinikum rechts der Isar, Technische Universität München, München, Germany; German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany.
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77
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Ahn S, Hwangbo W, Kim H, Kim CH. Naked cuticle Drosophila 1 expression in histologic subtypes of small adenocarcinoma of the lung. KOREAN JOURNAL OF PATHOLOGY 2013; 47:211-8. [PMID: 23837013 PMCID: PMC3701816 DOI: 10.4132/koreanjpathol.2013.47.3.211] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/05/2013] [Accepted: 04/23/2013] [Indexed: 01/15/2023]
Abstract
Background Naked cuticle Drosophila 1 (NKD1) has been related to non-small cell lung cancer in that decreased NKD1 levels have been associated with both poor prognosis and increased invasive quality. Methods Forty cases of lung adenocarcinoma staged as Tis or T1a were selected. Cases were subclassified into adenocarcinoma in situ (AIS), minimally invasive adenocarcinoma (MIA), and small adenocarcinoma (SAD). Immunohistochemical studies for NKD1 were performed. Results Forty samples comprised five cases of AIS (12.5%), eight of MIA (20.0%), and 27 of SAD (67.5%). AIS and MIA showed no lymph node metastasis and 100% disease-free survival, whereas among 27 patients with SAD, 2 (7.4%) had lymph node metastasis, and 3 (11.1%) died from the disease. Among the 40 cases, NKD1-reduced expression was detected in 8 (20%) samples, whereas normal expression was found in 15 (37.5%) and overexpression in 17 (42.5%). Loss of NKD1 expression was significantly associated with lymph node metastasis (p=0.001). All cases with predominant papillary pattern showed overexpression of NKD1 (p=0.026). Conclusions Among MIA and SAD, MIA had better outcomes than SAD. Down-regulated NKD1 expression was closely associated with nodal metastasis, and overexpression was associated with papillary predominant adenocarcinoma.
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Affiliation(s)
- Sangjeong Ahn
- Department of Pathology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
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78
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Tumour-microenvironment interactions: role of tumour stroma and proteins produced by cancer-associated fibroblasts in chemotherapy response. Cell Oncol (Dordr) 2013; 36:95-112. [PMID: 23494412 DOI: 10.1007/s13402-013-0127-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2013] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Cytotoxic chemotherapy improves survival for some, but not all, cancer patients. Non-responders may experience unnecessary toxicity and cancer progression, thus creating an urgent need for biomarkers that can predict the response to chemotherapy. So far, the search for such biomarkers has primarily been focused on the cancer cells and less on their surrounding stroma. This stroma is known to act as a key regulator of tumour progression and, in addition, has been associated with drug delivery and drug efficacy. Fibroblasts represent the major cell type in cancer-associated stroma and they secrete extracellular matrix proteins as well as growth factors. This Medline-based literature review summarises the results from studies on epithelial cancers and aimed at investigating relationships between the quantity and quality of the intra-tumoral stroma, the cancer-associated fibroblasts, the proteins they produce and the concomitant response to chemotherapy. Biomarkers were selected for review that are known to affect cancer-related characteristics and patient prognosis. RESULTS The current literature supports the hypothesis that biomarkers derived from the tumour stroma may be useful to predict response to chemotherapy. This notion appears to be related to the overall quantity and cellularity of the intra-tumoural stroma and the predominant constituents of the extracellular matrix. CONCLUSION Increasing evidence is emerging showing that tumour-stroma interactions may not only affect tumour progression and patient prognosis, but also the response to chemotherapy. The tumour stroma-derived biomarkers that appear to be most appropriate to determine the patient's response to chemotherapy vary by tumour origin and the availability of pre-treatment tissue. For patients scheduled for adjuvant chemotherapy, the most promising biomarker appears to be the PLAU: SERPINE complex, whereas for patients scheduled for neo-adjuvant chemotherapy the tumour stroma quantity appears to be most relevant.
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Wang J, Wang B, Zhao W, Guo Y, Chen H, Chu H, Liang X, Bi J. Clinical significance and role of lymphatic vessel invasion as a major prognostic implication in non-small cell lung cancer: a meta-analysis. PLoS One 2012; 7:e52704. [PMID: 23285161 PMCID: PMC3527568 DOI: 10.1371/journal.pone.0052704] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 11/19/2012] [Indexed: 11/30/2022] Open
Abstract
Background Lymphatic vessel invasion (LVI) exerts an important process in the progression and local spread of cancer cells. However, LVI as a prognostic factor for survival in non-small cell lung cancer (NSCLC) remains controversial. Methodology/Principal Findings A meta-analysis of published studies from PubMed and EMBASE electronic databases was performed to quantity the effects of LVI on both relapse-free survival and overall survival for patients with NSCLC. Hazard ratios (HRs) with 95% confidence intervals (95% CIs) were used to assess the strength of these effects. This meta-analysis included 18,442 NSCLC patients from 53 eligible studies. LVI appeared in 32.1% (median; range, 2.8% to 70.9%) of tumor samples. In all, patients with LVI were 2.48 times more likely to relapse by univariate analysis (95% CI: 1.92–3.22) and 1.73 times by multivariate analysis (95% CI: 1.24–2.41) compared with those without LVI. For the analyses of LVI and overall survival, the pooled HR estimate was 1.97 (95% CI: 1.75–2.21) by univariate analysis and 1.59 (95% CI: 1.41–1.79) by multivariate analysis. Multivariate analysis showed a risk was 91% higher for recurrence (HR = 1.91, 95% CI: 1.14–2.91) and 70% higher for mortality (HR = 1.70, 95% CI: 1.38–2.10) in LVI-positive I stage patients compared with LVI-negative I stage patients. Subgroup analyses showed similar significant adjusted risks for recurrence and death in adenocarcinomas, and a significant adjusted risk for death in studies that utilized elastic staining with or without immunohistochemistry in defining LVI. Conclusions/Significance The present study indicates that LVI appears to be an independent poor prognosticator in surgically managed NSCLC. NSCLC patients with LVI would require a more aggressive treatment strategy after surgery. However, large, well-designed prospective studies with clinically relevant modeling and standard methodology to assess LVI are required to address some of these important issues.
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Affiliation(s)
- Jun Wang
- Department of Oncology, General Hospital, Jinan Command of the People's Liberation Army, Jinan, China.
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‘Bronchioloalveolar carcinoma’: is the term really dead? A critical review of a new classification system for pulmonary adenocarcinomas. Pathology 2012; 44:497-505. [DOI: 10.1097/pat.0b013e3283579fda] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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81
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Abstract
Fibrotic focus is a scar-like lesion near the center of a carcinoma and has been associated with high-grade, lymph node metastases and poor survival in female breast cancers. Hypoxia is suggested to be the crucial link between fibrotic focus and aggressive tumor phenotype and is also itself a poor prognostic marker. We here set out to study fibrotic focus and hypoxia in male breast cancer for the first time. In a group of 134 male breast cancer patients, the presence and size of a fibrotic focus and the expression of three hypoxia-related immunohistochemical stainings, hypoxia-inducible factor-1α, carbonic anhydrase IX and Glut-1 were studied in correlation with clinicopathological features and prognosis. Fibrotic focus was seen in 25% of the male breast cancer cases and was correlated with hypoxia-inducible factor-1α overexpression (P=0.023), high grade (P=0.005), high mitotic activity (P=0.005) and lymph node metastases (P=0.037). Hypoxia-inducible factor-1α-positive tumors were more often high grade (P=0.003) and HER2 amplified (P=0.005). Glut-1 expression was also more common in grade 3 tumors (P=0.038), but no association between carbonic anhydrase IX and any clinicopathological feature was found. Fibrotic focus >8 mm and hypoxia-inducible factor-1α overexpression were correlated with decreased patients' outcome (P=0.035 and 0.008, respectively). Hypoxia-inducible factor-1α overexpression was an independent and the most powerful predictor of survival in multivariate analysis (P=0.029; hazard ratio 2.5). In conclusion, the presence of a fibrotic focus is associated with hypoxia-inducible factor-1α overexpression, and both are associated with aggressive tumor phenotype and poor survival in male breast cancer. These markers seem to have similar clinical importance as previously reported in female breast cancer.
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82
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Vicent S, Sayles LC, Vaka D, Khatri P, Gevaert O, Chen R, Zheng Y, Gillespie AK, Clarke N, Xu Y, Shrager J, Hoang CD, Plevritis S, Butte AJ, Sweet-Cordero EA. Cross-species functional analysis of cancer-associated fibroblasts identifies a critical role for CLCF1 and IL-6 in non-small cell lung cancer in vivo. Cancer Res 2012; 72:5744-56. [PMID: 22962265 DOI: 10.1158/0008-5472.can-12-1097] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Cancer-associated fibroblasts (CAF) have been reported to support tumor progression by a variety of mechanisms. However, their role in the progression of non-small cell lung cancer (NSCLC) remains poorly defined. In addition, the extent to which specific proteins secreted by CAFs contribute directly to tumor growth is unclear. To study the role of CAFs in NSCLCs, a cross-species functional characterization of mouse and human lung CAFs was conducted. CAFs supported the growth of lung cancer cells in vivo by secretion of soluble factors that directly stimulate the growth of tumor cells. Gene expression analysis comparing normal mouse lung fibroblasts and mouse lung CAFs identified multiple genes that correlate with the CAF phenotype. A gene signature of secreted genes upregulated in CAFs was an independent marker of poor survival in patients with NSCLC. This secreted gene signature was upregulated in normal lung fibroblasts after long-term exposure to tumor cells, showing that lung fibroblasts are "educated" by tumor cells to acquire a CAF-like phenotype. Functional studies identified important roles for CLCF1-CNTFR and interleukin (IL)-6-IL-6R signaling in promoting growth of NSCLCs. This study identifies novel soluble factors contributing to the CAF protumorigenic phenotype in NSCLCs and suggests new avenues for the development of therapeutic strategies.
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Affiliation(s)
- Silvestre Vicent
- AutCancer Biology Program, Division of Hematology/Oncology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California 94305, USA
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Iwano S, Koike W, Matsuo K, Kitano M, Kawakami K, Okada T, Naganawa S. Correlation between dynamic CT findings and pathological prognostic factors of small lung adenocarcinoma. Cancer Imaging 2012; 12:187-93. [PMID: 22752199 PMCID: PMC3392779 DOI: 10.1102/1470-7330.2012.0018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To compare pathological prognostic factors of small lung adenocarcinomas with findings of contrast-enhanced dynamic computed tomography (CT) scans. MATERIALS AND METHODS We evaluated 108 patients with lung adenocarcinomas ≤ 30 mm in diameter who underwent dynamic CT scans (80-96 ml of contrast material, 2.5-3 ml/s injection) and tumor resections. Attenuation values of both the early phase (20-36 s after injection) and delayed phase (91-95 s) of enhanced CT minus baseline plain CT attenuation were defined as ΔEarly and ΔDelay. The early enhancement ratio was defined as ΔEarly/ΔDelay×100 (%). We statistically compared the early enhancement ratios between the presence and absence of each pathological finding (lymph node metastasis, lymphatic permeation, vascular invasion, and pleural involvement). Patients were divided into 2 groups based on early enhancement ratios: ratio ≥50% (n = 41) and ratio <50% (n = 67) and we statistically compared these 2 groups. RESULTS The early enhancement ratios in the group with lymph node metastasis, lymphatic permeation, and vascular invasion were significantly lower than in the group without these findings (24.9% vs 48.6%; P < 0.001, 30.0% vs 47.5%; P = 0.002, and 26.5% vs 47.0%; P = 0.002, respectively). Lymph node metastasis, lymphatic permeation, and vascular invasion were significantly more frequent in tumors with a ratio <50% than in tumors with ratio ≥50% (P < 0.001, P = 0.008, and P = 0.005, respectively). CONCLUSIONS There was a significant correlation between the early enhancement ratio of enhanced dynamic CT and the pathological prognostic factors in small lung adenocarcinomas.
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Affiliation(s)
- Shingo Iwano
- Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa-ku, Japan.
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84
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Kim D, Kim H, Koo JS. Expression of Caveolin-1, Caveolin-2 and Caveolin-3 in Thyroid Cancer and Stroma. Pathobiology 2012; 79:1-10. [DOI: 10.1159/000329472] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Accepted: 05/06/2011] [Indexed: 12/13/2022] Open
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85
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Borczuk AC. Assessment of invasion in lung adenocarcinoma classification, including adenocarcinoma in situ and minimally invasive adenocarcinoma. Mod Pathol 2012; 25 Suppl 1:S1-10. [PMID: 22214965 DOI: 10.1038/modpathol.2011.151] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Classification of adenocarcinoma has undergone recent evaluation to better align histological classification with clinical outcomes. One terminology, in particular, that of bronchioloalveolar carcinoma (BAC), has been debated for many decades. Although initial discussion surrounded the cell-of-origin of this tumor, more recent confusion has been generated from the use of this term both as a pattern of growth within an otherwise invasive adenocarcinoma and as a term for a pre-invasive tumor synonymous with adenocarcinoma in situ. As a result, adenocarcinomas with quite different radiology, gross morphology and metastatic potential have been associated with the BAC term. Focusing on invasion and using an illustrative case, we will explore the current recommendations that incorporate assessment of invasion to clarify the confusion caused by the different uses of the historical term 'BAC'.
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Affiliation(s)
- Alain C Borczuk
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA.
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86
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Fibrous stroma is associated with poorer prognosis in lung squamous cell carcinoma patients. J Thorac Oncol 2011; 6:1460-7. [PMID: 21849853 DOI: 10.1097/jto.0b013e318229189d] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Cancer tissue is composed of various stromal cells forming cancer-specific microenvironments. Peritumoral stroma is reportedly composed of activated fibroblasts that can influence the biological properties of tumor cells, mainly their local aggressiveness and their ability. The aim of this study was to examine whether the histological properties of peritumoral stroma are correlated with squamous cell carcinoma (SqCC) aggressiveness and clinical outcome. METHODS A series of 220 pathological stage I lung SqCC were categorized into two types according to the histological properties of the peritumoral stroma, "fibrous stroma type" (n = 85), and "thin stroma type" (n = 135), and compared the prognostic significance. Furthermore, we compared the immunohistochemical properties of the SqCC cells surrounded by "fibrous stroma" with those of the SqCC cells surrounded by "thin stroma." RESULTS The prognosis of the patients with fibrous stroma-type tumors was significantly poorer than that of the thin stroma type with regard to both recurrence-free survival (p = 0.005) and overall survival (p = 0.008). A multivariate analysis showed that the presence of a fibrous stroma was an independent prognostic factor (p = 0.030). Compared with the SqCC cells with a thin stroma, the SqCC cells with a fibrous stroma exhibited reduced expression of E-cadherin (55.9 versus 126.0, p < 0.001) and an increased expression of laminin-5γ2 (94.6 versus 25.0, p = 0.001), matrix metalloproteinase-7 (26.0 versus 3.50, p = 0.009), and c-Met (64.0 versus 36.5, p = 0.033). CONCLUSION SqCC with a fibrous stroma displayed higher invasive phenotype and were associated with a significantly poor prognosis. The current results suggest that the microenvironment created by both SqCC cells and the peritumoral fibroblasts may facilitate cancer aggressiveness.
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Martinez-Outschoorn UE, Pestell RG, Howell A, Tykocinski ML, Nagajyothi F, Machado FS, Tanowitz HB, Sotgia F, Lisanti MP. Energy transfer in "parasitic" cancer metabolism: mitochondria are the powerhouse and Achilles' heel of tumor cells. Cell Cycle 2011; 10:4208-16. [PMID: 22033146 DOI: 10.4161/cc.10.24.18487] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
It is now widely recognized that the tumor microenvironment promotes cancer cell growth and metastasis via changes in cytokine secretion and extracellular matrix remodeling. However, the role of tumor stromal cells in providing energy for epithelial cancer cell growth is a newly emerging paradigm. For example, we and others have recently proposed that tumor growth and metastasis is related to an energy imbalance. Host cells produce energy-rich nutrients via catabolism (through autophagy, mitophagy, and aerobic glycolysis), which are then transferred to cancer cells to fuel anabolic tumor growth. Stromal cell-derived L-lactate is taken up by cancer cells and is used for mitochondrial oxidative phosphorylation (OXPHOS) to produce ATP efficiently. However, "parasitic" energy transfer may be a more generalized mechanism in cancer biology than previously appreciated. Two recent papers in Science and Nature Medicine now show that lipolysis in host tissues also fuels tumor growth. These studies demonstrate that free fatty acids produced by host cell lipolysis are re-used via beta-oxidation (beta-OX) in cancer cell mitochondria. Thus, stromal catabolites (such as lactate, ketones, glutamine and free fatty acids) promote tumor growth by acting as high-energy onco-metabolites. As such, host catabolism, via autophagy, mitophagy and lipolysis, may explain the pathogenesis of cancer-associated cachexia and provides exciting new druggable targets for novel therapeutic interventions. Taken together, these findings also suggest that tumor cells promote their own growth and survival by behaving as a "parasitic organism." Hence, we propose the term "Parasitic Cancer Metabolism" to describe this type of metabolic coupling in tumors. Targeting tumor cell mitochondria (OXPHOS and beta-OX) would effectively uncouple tumor cells from their hosts, leading to their acute starvation. In this context, we discuss new evidence that high-energy onco-metabolites (produced by the stroma) can confer drug resistance. Importantly, this metabolic chemo-resistance is reversed by blocking OXPHOS in cancer cell mitochondria with drugs like Metformin, a mitochondrial "poison." In summary, parasitic cancer metabolism is achieved architecturally by dividing tumor tissue into at least two well-defined opposing "metabolic compartments:" catabolic and anabolic.
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Affiliation(s)
- Ubaldo E Martinez-Outschoorn
- The Jefferson Stem Cell Biology and Regenerative Medicine Center, Thomas Jefferson University, Philadelphia, PA, USA
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Xu Y, Shi QL, Ma H, Zhou H, Lu Z, Yu B, Zhou X, Eriksson S, He E, Skog S. High thymidine kinase 1 (TK1) expression is a predictor of poor survival in patients with pT1 of lung adenocarcinoma. Tumour Biol 2011; 33:475-83. [PMID: 22143937 DOI: 10.1007/s13277-011-0276-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 11/11/2011] [Indexed: 11/28/2022] Open
Abstract
In this study, we explore the association of thymidine kinase 1 (TK1) expression in tumour tissues with clinical pathological parameters and prognosis in patients with pathological T1 (pT1) lung adenocarcinoma. The expression of TK1 was studied by immunohistochemistry techniques in 80 patients with surgically resected pT1 lung adenocarcinoma, retrospectively and at >10-year follow-up. Compared to patients with low TK1 expression [labelling index (LI) <25.0%], patients with high TK1 expression (LI ≥ 25.0%) showed significantly increased lymphatic/vascular permeation and lymph node involvement and higher stromal invasion grade and pathological stage, and a greater number of patients had a tumour size of 2.1 to 3.0 cm. The 5-year survival and the mortality during follow-up for patients with high TK1 expression were significantly worse than that of patients with low TK1 expression. The prognoses of the cases with grade 0, grade 1 and grade 2 stromal invasions were similar and were better than those of cases with grade 3. In patients with stromal invasion grade 3, the 5-year survival and the mortality during follow-up were significantly worse for patients with high TK1 compared to patients with low TK1 expression. Univariate analyses showed that stromal invasion and TK1 expression were significant prognostic factors, while in the multivariate analysis, TK1 expression and tumour stage were found to be independent prognostic factors, but not stromal invasion. This is the first study showing that TK1 expression in combination with stromal invasion is a more reliable prognostic factor than stromal invasion classification itself in patients with pT1 lung adenocarcinoma. TK1 expression enables a further classification of the patients and opens opportunities for improved treatment outcome.
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Affiliation(s)
- Yan Xu
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University Medical School, 305 Zhongshangdong Road, Nanjing, 210002, Jiangsu Province, China
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Correlation between dual-phase dynamic multi-detector CT findings and fibrosis within lung adenocarcinoma tumors. Eur J Radiol 2011; 80:e470-5. [DOI: 10.1016/j.ejrad.2010.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2010] [Revised: 08/30/2010] [Accepted: 09/03/2010] [Indexed: 11/21/2022]
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90
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Wu MH, Hong HC, Hong TM, Chiang WF, Jin YT, Chen YL. Targeting galectin-1 in carcinoma-associated fibroblasts inhibits oral squamous cell carcinoma metastasis by downregulating MCP-1/CCL2 expression. Clin Cancer Res 2011; 17:1306-16. [PMID: 21385934 DOI: 10.1158/1078-0432.ccr-10-1824] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Carcinoma-associated fibroblasts (CAFs) in tumor stroma play an important role in tumor progression and have been associated with a poor prognosis in oral squamous cell carcinoma (OSCC). However, how CAFs influence OSCC malignancy and whether normalizing CAFs inhibits cancer progression remain unclear. EXPERIMENTAL DESIGN The relationship between the expression of Galectin-1 (Gal-1) and alpha-smooth muscle actin (α-SMA, a CAF marker) in OSCC patient samples and primary cultured CAFs was examined by quantitative real-time PCR, Western blotting, and immunofluorescence. To examine the effect of Gal-1 on CAF activation and CAF-mediated tumor invasion and migration in vitro, Gal-1 expression was knocked down by small hairpin RNA. Finally, cancer cells and CAFs were coimplanted into SCID mice to evaluate the effect of Gal-1 on CAF-modulated tumor progression in vivo. RESULTS Gal-1 expression is positively associated with α-SMA in the stroma of OSCC specimens. Gal-1 knockdown decreases activated CAF characteristics, resulting in a decrease in α-SMA expression and extracellular matrix protein production. Notably, blocking Gal-1 expression significantly inhibits CAF-conditioned medium-induced tumor cell migration and invasion, possibly by reducing the production of monocyte chemotactic protein-1 (MCP-1/CCL2). MCP-1 induces the migration of OSCC cells by binding to the receptor CCR2; adding an MCP-1 antibody to CAF-conditioned medium that inhibits the interaction between MCP-1 and CCR2 abolishes migration. Finally, we found that Gal-1 knockdown in CAFs significantly reduces CAF-augmented tumor growth and metastasis in vivo. CONCLUSIONS Our findings demonstrate that Gal-1 regulates CAF activation and indicate that targeting Gal-1 in CAFs inhibits OSCC metastasis by modulating MCP-1 expression.
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Affiliation(s)
- Ming-Heng Wu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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91
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Sieren JC, Smith AR, Thiesse J, Namati E, Hoffman EA, Kline JN, McLennan G. Exploration of the volumetric composition of human lung cancer nodules in correlated histopathology and computed tomography. Lung Cancer 2011; 74:61-8. [PMID: 21371772 DOI: 10.1016/j.lungcan.2011.01.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 01/18/2011] [Accepted: 01/30/2011] [Indexed: 10/18/2022]
Abstract
Gaining a complete and comprehensive understanding of lung cancer nodule histological compositions and how these tissues are represented in radiological data is important not only for expanding the current knowledge base of cancer growth and development but also has potential implications for classification standards, radiological diagnosis methods and for the evaluation of treatment response. In this study we generate large scale histological segmentations of the cancerous and non-cancerous tissues within resected lung nodules. We have implemented a processing pipeline which allows for the direct correlation between histological data and spatially corresponding computed tomography data. Utilizing these correlated datasets we evaluated the statistical separation between Hounsfield Unit (HU) histogram values for each tissue type. The findings of this study revealed that lung cancer nodules contain a complex intermixing of cellular tissue types and that trends exist in the relationship between these tissue types. It was found that the mean Hounsfield Unit values for isolated lung cancer nodules imaged with computed tomography, had statistically significantly different values for non-solid bronchoalveolar carcinoma, solid cancerous tumor, blood, and inactive fibrotic stromal tissue.
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Affiliation(s)
- J C Sieren
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA.
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92
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Quante M, Tu SP, Tomita H, Gonda T, Wang SS, Takashi S, Baik GH, Shibata W, DiPrete B, Betz KS, Friedman R, Varro A, Tycko B, Wang TC. Bone marrow-derived myofibroblasts contribute to the mesenchymal stem cell niche and promote tumor growth. Cancer Cell 2011; 19:257-72. [PMID: 21316604 PMCID: PMC3060401 DOI: 10.1016/j.ccr.2011.01.020] [Citation(s) in RCA: 816] [Impact Index Per Article: 62.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 07/23/2010] [Accepted: 01/10/2011] [Indexed: 02/08/2023]
Abstract
Carcinoma-associated fibroblasts (CAFs) that express α-smooth muscle actin (αSMA) contribute to cancer progression, but their precise origin and role are unclear. Using mouse models of inflammation-induced gastric cancer, we show that at least 20% of CAFs originate from bone marrow (BM) and derive from mesenchymal stem cells (MSCs). αSMA+ myofibroblasts (MFs) are niche cells normally present in BM and increase markedly during cancer progression. MSC-derived CAFs that are recruited to the dysplastic stomach express IL-6, Wnt5α and BMP4, show DNA hypomethylation, and promote tumor growth. Moreover, CAFs are generated from MSCs and are recruited to the tumor in a TGF-β- and SDF-1α-dependent manner. Therefore, carcinogenesis involves expansion and relocation of BM-niche cells to the tumor to create a niche to sustain cancer progression.
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Affiliation(s)
- Michael Quante
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Shui Ping Tu
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
- Susan L. Cullman Laboratory for Cancer Research, Department of Chemical Biology, Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Hiroyuki Tomita
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Tamas Gonda
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
- Institute for Cancer Genetics and Department of Pathology, Columbia University, New York, NY, USA
| | - Sophie S.W. Wang
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Shigeo Takashi
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Gwang Ho Baik
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Wataru Shibata
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Bethany DiPrete
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Kelly S. Betz
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Richard Friedman
- Department of Biomedical Informatics, Columbia University, New York, NY, USA
| | - Andrea Varro
- Department of Physiological Laboratory, School of Biomedical Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Benjamin Tycko
- Institute for Cancer Genetics and Department of Pathology, Columbia University, New York, NY, USA
| | - Timothy C. Wang
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
- Corresponding author: Timothy Cragin Wang M.D., Division of Digestive and Liver Diseases, Dorothy L. and Daniel H. Silberberg Professor of Medicine, Columbia University Medical Center,
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93
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Autocrine TGF-beta and stromal cell-derived factor-1 (SDF-1) signaling drives the evolution of tumor-promoting mammary stromal myofibroblasts. Proc Natl Acad Sci U S A 2010; 107:20009-14. [PMID: 21041659 DOI: 10.1073/pnas.1013805107] [Citation(s) in RCA: 640] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Much interest is currently focused on the emerging role of tumor-stroma interactions essential for supporting tumor progression. Carcinoma-associated fibroblasts (CAFs), frequently present in the stroma of human breast carcinomas, include a large number of myofibroblasts, a hallmark of activated fibroblasts. These fibroblasts have an ability to substantially promote tumorigenesis. However, the precise cellular origins of CAFs and the molecular mechanisms by which these cells evolve into tumor-promoting myofibroblasts remain unclear. Using a coimplantation breast tumor xenograft model, we show that resident human mammary fibroblasts progressively convert into CAF myofibroblasts during the course of tumor progression. These cells increasingly acquire two autocrine signaling loops, mediated by TGF-β and SDF-1 cytokines, which both act in autostimulatory and cross-communicating fashions. These autocrine-signaling loops initiate and maintain the differentiation of fibroblasts into myofibroblasts and the concurrent tumor-promoting phenotype. Collectively, these findings indicate that the establishment of the self-sustaining TGF-β and SDF-1 autocrine signaling gives rise to tumor-promoting CAF myofibroblasts during tumor progression. This autocrine-signaling mechanism may prove to be an attractive therapeutic target to block the evolution of tumor-promoting CAFs.
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94
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Reproducibility and validation of tumour stroma ratio scoring on oesophageal adenocarcinoma biopsies. Eur J Cancer 2010; 47:375-82. [PMID: 21036599 DOI: 10.1016/j.ejca.2010.09.043] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 09/14/2010] [Accepted: 09/28/2010] [Indexed: 02/08/2023]
Abstract
BACKGROUND Tumour stroma ratio (TSR) in histological sections of resected oesophageal adenocarcinomas proved to be a prognostic factor for patients' survival. The objectives of this study were to assess inter- and intraobserver agreement for TSR scoring on biopsy material and to validate these biopsy results with the results derived from surgical specimens. METHODS Biopsies and surgical specimens of 91 patients with oesophageal adenocarcinoma were available. TSR was determined on the original haematoxylin-eosin (H&E) tissue sections from primary tumour biopsies. To assess interobserver variation, TSR was scored by three pathologists as 0-25%, 25-50%, 50-75% or 75-100%. A second scoring was done to examine intraobserver variation. The definitive TSR biopsy score was compared with the corresponding resection specimen score. Kappa statistics were applied to evaluate agreement. RESULTS Biopsies of 10 (11%) patients were rejected because of poor quality. For 81 TSR biopsy scores, interobserver correlations ranged between 0.239 and 0.486 (P < 0.001 for all). By classifying scores into two groups (<50% and ≥ 50%), interobserver correlations ranged between 0.372 and 0.886 (P < 0.001 for all). Intraobserver agreement was substantial to near-perfect (κ = 0.780-0.848; P < 0.001 for all). Definitive TSR biopsy score showed moderate correlation with TSR scores on surgical specimens (κ = 0.506), but it was an independent prognostic factor for survival. CONCLUSION Reproducibility of tumour stroma ratio scoring on oesophageal adenocarcinoma biopsies was good. The ease of TSR scoring on H&E sections together with its correlation with patients' survival may have clinical relevance in this era of neoadjuvant therapy.
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95
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Allosteric inhibition of lysyl oxidase-like-2 impedes the development of a pathologic microenvironment. Nat Med 2010; 16:1009-17. [PMID: 20818376 DOI: 10.1038/nm.2208] [Citation(s) in RCA: 636] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 08/05/2010] [Indexed: 02/07/2023]
Abstract
We have identified a new role for the matrix enzyme lysyl oxidase-like-2 (LOXL2) in the creation and maintenance of the pathologic microenvironment of cancer and fibrotic disease. Our analysis of biopsies from human tumors and fibrotic lung and liver tissues revealed an increase in LOXL2 in disease-associated stroma and limited expression in healthy tissues. Targeting LOXL2 with an inhibitory monoclonal antibody (AB0023) was efficacious in both primary and metastatic xenograft models of cancer, as well as in liver and lung fibrosis models. Inhibition of LOXL2 resulted in a marked reduction in activated fibroblasts, desmoplasia and endothelial cells, decreased production of growth factors and cytokines and decreased transforming growth factor-beta (TGF-beta) pathway signaling. AB0023 outperformed the small-molecule lysyl oxidase inhibitor beta-aminoproprionitrile. The efficacy and safety of LOXL2-specific AB0023 represents a new therapeutic approach with broad applicability in oncologic and fibrotic diseases.
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96
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Sieren JC, Weydert J, Bell A, De Young B, Smith AR, Thiesse J, Namati E, McLennan G. An automated segmentation approach for highlighting the histological complexity of human lung cancer. Ann Biomed Eng 2010; 38:3581-91. [PMID: 20571856 DOI: 10.1007/s10439-010-0103-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Accepted: 06/11/2010] [Indexed: 11/25/2022]
Abstract
Lung cancer nodules, particularly adenocarcinoma, contain a complex intermixing of cellular tissue types: incorporating cancer cells, fibroblastic stromal tissue, and inactive fibrosis. Quantitative proportions and distributions of the various tissue types may be insightful for understanding lung cancer growth, classification, and prognostic factors. However, current methods of histological assessment are qualitative and provide limited opportunity to systematically evaluate the relevance of lung nodule cellular heterogeneity. In this study we present both a manual and an automatic method for segmentation of tissue types in histological sections of resected human lung cancer nodules. A specialized staining approach incorporating immunohistochemistry with a modified Masson's Trichrome counterstain was employed to maximize color contrast in the tissue samples for automated segmentation. The developed, clustering-based, fully automated segmentation approach segments complete lung nodule cross-sectional histology slides in less than 1 min, compared to manual segmentation which requires multiple hours to complete. We found the accuracy of the automated approach to be comparable to that of the manual segmentation with the added advantages of improved time efficiency, removal of susceptibility to human error, and 100% repeatability.
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Affiliation(s)
- J C Sieren
- Department of Internal Medicine, University of Iowa, Iowa City, USA.
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97
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Abstract
The histologic distinction between bronchioloalveolar carcinoma and other adenocarcinomas is tissue invasion. The clinical importance of lung adenocarcinoma invasion is supported by several recent studies indicating that the risk of death in nonmucinous bronchioloalveolar carcinoma is significantly lower than that of pure invasive tumors and in tumors with greater than 0.5 cm of fibrosis or linear invasion. Using microarray gene expression profiling of human tumors, dysregulation of transforming growth factor-beta signaling was identified as an important mediator of tumor invasion. Subsequent studies showed that the CC chemokine regulated on activation, normal T cell expressed, and presumably secreted was up-regulated in invasive tumors and was required for invasion in cells with repressed levels of the transforming growth factor-beta type II receptor. Taken together, these studies illustrate how information gained from global expression profiling of tumors can be used to identify key pathways and genes mediating tumor growth, invasion, and metastasis.
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98
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Detterbeck FC, Boffa DJ, Tanoue LT, Wilson LD. Details and Difficulties Regarding the New Lung Cancer Staging System. Chest 2010; 137:1172-80. [DOI: 10.1378/chest.09-2626] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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99
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The proportion of tumour cells is an independent predictor for survival in colorectal cancer patients. Br J Cancer 2010; 102:1519-23. [PMID: 20407439 PMCID: PMC2869173 DOI: 10.1038/sj.bjc.6605674] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background: The proportion of epithelial and stromal cells in tumours is thought to have an important role in the progression of epithelial malignancy. We aimed to determine whether the relative proportion of tumour (PoT) was related to survival in colorectal cancer. Methods: The PoT at the luminal surface was measured by point counting using virtual tissue sections in a series of 145 colorectal cancer cases. The relationship of PoT to clinicopathological parameters including cancer-specific survival was analysed. Modified receiver operating characteristic curves were used to determine the optimum cut off points to dichotomise the data for survival analyses. Results: Tumours with PoT-low (⩽47%) were associated with significantly lower cancer-specific survival when compared to PoT-high (hazard ratio (HR)=2.087, 95% CI=1.088–4.003, P=0.024). On sub-analysis, the prognostic effect remained significant in colonic tumours (HR=2.474, 95% CI=1.132–5.408, P=0.019) and tumour, node, metastasis stage III disease (HR=3.480, 95% CI=0.325–9.136, P=0.007). Multivariate Cox regression analysis demonstrated that PoT was an independent prognostic marker when adjusted for age, T stage, N stage and extramural vascular invasion (P=0.017). Conclusion: This study suggests that a low proportion of tumour cells in colorectal cancer is related to poor cancer-specific survival. A relatively quick, inexpensive and well-established method such as point counting on diagnostic tissue sections could be used to identify a subset of patients who may benefit from adjuvant therapy.
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100
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Histological Scoring for Small Lung Adenocarcinomas 2 cm or Less in Diameter: A Reliable Prognostic Indicator. J Thorac Oncol 2010; 5:333-9. [DOI: 10.1097/jto.0b013e3181c8cb95] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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