1
|
Ali TS, Tourell MC, Hugo HJ, Pyke C, Yang S, Lloyd T, Thompson EW, Momot KI. Transverse relaxation-based assessment of mammographic density and breast tissue composition by single-sided portable NMR. Magn Reson Med 2019; 82:1199-1213. [PMID: 31034648 DOI: 10.1002/mrm.27781] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 02/06/2023]
Abstract
PURPOSE Elevated mammographic density (MD) is an independent risk factor for breast cancer (BC) as well as a source of masking in X-ray mammography. High-frequency longitudinal monitoring of MD could also be beneficial in hormonal BC prevention, where early MD changes herald the treatment's success. We present a novel approach to quantification of MD in breast tissue using single-sided portable NMR. Its development was motivated by the low cost of portable-NMR instrumentation, the suitability for measurements in vivo, and the absence of ionizing radiation. METHODS Five breast slices were obtained from three patients undergoing prophylactic mastectomy or breast reduction surgery. Carr-Purcell-Meiboom-Gill (CPMG) relaxation curves were measured from (1) regions of high and low MD (HMD and LMD, respectively) in the full breast slices; (2) the same regions excised from the full slices; and (3) excised samples after H2 O-D2 O replacement. T2 distributions were reconstructed from the CPMG decays using inverse Laplace transform. RESULTS Two major peaks, identified as fat and water, were consistently observed in the T2 distributions of HMD regions. The LMD T2 distributions were dominated by the fat peak. The relative areas of the two peaks exhibited statistically significant (P < .005) differences between HMD and LMD regions, enabling their classification as HMD or LMD. The relative-area distributions exhibited no statistically significant differences between full slices and excised samples. CONCLUSION T2 -based portable-NMR analysis is a novel approach to MD quantification. The ability to quantify tissue composition, combined with the low cost of instrumentation, make this approach promising for clinical applications.
Collapse
Affiliation(s)
- Tonima S Ali
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia
| | - Monique C Tourell
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia
| | - Honor J Hugo
- Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia.,School of Biomedical Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Australia.,Translational Research Institute, Woolloongabba, Australia
| | - Chris Pyke
- Department of Surgery, Mater Hospital, University of Queensland, St Lucia, Australia
| | - Samuel Yang
- Department of Plastic and Reconstructive Surgery, Greenslopes Private Hospital, Brisbane, Australia
| | - Thomas Lloyd
- Division of Radiology, Princess Alexandra Hospital, Woolloongabba, Australia
| | - Erik W Thompson
- Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia.,School of Biomedical Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Australia.,Translational Research Institute, Woolloongabba, Australia.,University of Melbourne Department of Surgery, St Vincent's Hospital, Melbourne, Australia
| | - Konstantin I Momot
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia
| |
Collapse
|
2
|
Huo CW, Hill P, Chew G, Neeson PJ, Halse H, Williams ED, Henderson MA, Thompson EW, Britt KL. High mammographic density in women is associated with protumor inflammation. Breast Cancer Res 2018; 20:92. [PMID: 30092832 PMCID: PMC6085707 DOI: 10.1186/s13058-018-1010-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 06/27/2018] [Indexed: 01/27/2023] Open
Abstract
Background Epidemiological studies have consistently shown that increased mammographic density (MD) is a strong risk factor for breast cancer. We previously observed an elevated number of vimentin+/CD45+ leukocytes in high MD (HMD) epithelium. In the present study, we aimed to investigate the subtypes of immune cell infiltrates in HMD and low MD (LMD) breast tissue. Methods Fifty-four women undergoing prophylactic mastectomy at Peter MacCallum Cancer Centre or St. Vincent’s Hospital were enrolled. Upon completion of mastectomy, HMD and LMD areas were resected under radiological guidance in collaboration with BreastScreen Victoria and were subsequently fixed, processed, and sectioned. Fifteen paired HMD and LMD specimens were further selected according to their fibroglandular characteristics (reasonable amount [> 20%] of tissue per block on H&E stains) for subsequent IHC analysis of immune cell infiltration. Results Overall, immune cell infiltrates were predominantly present in breast ducts and lobules rather than in the stroma, with CD68+ macrophages and CD20+ B lymphocytes also surrounding the vasculature. Macrophages, dendritic cells (DCs), B lymphocytes, and programmed cell death protein 1 (PD-1) expression were significantly increased in HMD epithelium compared with LMD. Moreover, significantly higher levels of DCs, CD4+ T cells, and PD-1 were also observed in HMD stroma than in LMD stroma. The increased expression of interleukin (IL)-6 and IL-4, with unaltered interferon-γ, indicate a proinflammatory microenvironment. Conclusions Our work indicates that the immune system may be activated very early in breast cancer development and may in part underpin the breast cancer risk associated with HMD. Electronic supplementary material The online version of this article (10.1186/s13058-018-1010-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Cecilia W Huo
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia
| | - Prue Hill
- Department of Pathology, St Vincent's Hospital, Melbourne, Australia
| | - Grace Chew
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia
| | - Paul J Neeson
- Pathology Department, University of Melbourne, Melbourne, Australia.,Peter MacCallum Cancer Centre, Melbourne, Australia.,The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
| | | | - Elizabeth D Williams
- Institute of Health and Biomedical Innovation and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia.,Translational Research Institute, Brisbane, Australia
| | - Michael A Henderson
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia.,Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Erik W Thompson
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia.,Institute of Health and Biomedical Innovation and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia.,Translational Research Institute, Brisbane, Australia
| | - Kara L Britt
- Peter MacCallum Cancer Centre, Melbourne, Australia. .,The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia.
| |
Collapse
|
3
|
Tourell MC, Ali TS, Hugo HJ, Pyke C, Yang S, Lloyd T, Thompson EW, Momot KI. T 1 -based sensing of mammographic density using single-sided portable NMR. Magn Reson Med 2018; 80:1243-1251. [PMID: 29399874 DOI: 10.1002/mrm.27098] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 12/16/2017] [Accepted: 12/31/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Monique C Tourell
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia
| | - Tonima S Ali
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia
| | - Honor J Hugo
- Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia.,School of Biomedical Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Australia.,Translational Research Institute, Woolloongabba, Australia
| | - Chris Pyke
- Department of Surgery, Mater Hospital, University of Queensland, St Lucia, Australia
| | - Samuel Yang
- Department of Plastic and Reconstructive Surgery, Greenslopes Private Hospital, Brisbane, Australia
| | - Thomas Lloyd
- Division of Radiology, Princess Alexandra Hospital, Woolloongabba, Australia
| | - Erik W Thompson
- Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia.,School of Biomedical Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Australia.,Translational Research Institute, Woolloongabba, Australia.,University of Melbourne Department of Surgery, St Vincent's Hospital, Melbourne, Australia
| | - Konstantin I Momot
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, Australia
| |
Collapse
|
4
|
Huo CW, Waltham M, Khoo C, Fox SB, Hill P, Chen S, Chew GL, Price JT, Nguyen CH, Williams ED, Henderson M, Thompson EW, Britt KL. Mammographically dense human breast tissue stimulates MCF10DCIS.com progression to invasive lesions and metastasis. Breast Cancer Res 2016; 18:106. [PMID: 27776557 PMCID: PMC5078949 DOI: 10.1186/s13058-016-0767-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 10/05/2016] [Indexed: 12/22/2022] Open
Abstract
Background High mammographic density (HMD) not only confers a significantly increased risk of breast cancer (BC) but also is associated with BCs of more advanced stages. However, it is unclear whether BC progression and metastasis are stimulated by HMD. We investigated whether patient-derived HMD breast tissue could stimulate the progression of MCF10DCIS.com cells compared with patient-matched low mammographic density (LMD) tissue. Methods Sterile breast specimens were obtained immediately after prophylactic mastectomy from high-risk women (n = 10). HMD and LMD regions of each specimen were resected under radiological guidance. Human MCF10DCIS.com cells, a model of ductal carcinoma in situ (DCIS), were implanted into silicone biochambers in the groins of severe combined immunodeficiency mice, either alone or with matched LMD or HMD tissue (1:1), and maintained for 6 weeks. We assessed biochamber weight as a measure of primary tumour growth, histological grade of the biochamber material, circulating tumour cells and metastatic burden by luciferase and histology. All statistical tests were two-sided. Results HMD breast tissue led to increased primary tumour take, increased biochamber weight and increased proportions of high-grade DCIS and grade 3 invasive BCs compared with LMD. This correlated with an increased metastatic burden in the mice co-implanted with HMD tissue. Conclusions Our study is the first to explore the direct effect of HMD and LMD human breast tissue on the progression and dissemination of BC cells in vivo. The results suggest that HMD status should be a consideration in decision-making for management of patients with DCIS lesions. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0767-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Cecilia W Huo
- Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, VIC, 3156, Australia
| | - Mark Waltham
- Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, VIC, 3156, Australia.,St Vincent's Institute of Medical Research, Melbourne, VIC, 3156, Australia
| | - Christine Khoo
- Department of Pathology, Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC, 3000, Australia
| | - Stephen B Fox
- Department of Pathology, Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC, 3000, Australia.,Department of Pathology, University of Melbourne, Grattan Street, Parkville, VIC, 3010, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Grattan Street, Parkville, VIC, 3010, Australia
| | - Prue Hill
- Department of Pathology, St Vincent's Hospital, Melbourne, VIC, 3156, Australia
| | - Shou Chen
- Department of Pathology, St Vincent's Hospital, Melbourne, VIC, 3156, Australia
| | - Grace L Chew
- Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, VIC, 3156, Australia.,Austin Health and Northern Health, Melbourne, VIC, 3084, Australia
| | - John T Price
- College of Health and Biomedicine, Victoria University, St Albans, VIC, 8001, Australia.,Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, VIC, 3800, Australia.,Australian Institute for Musculoskeletal Science (AIMSS), Victoria University, University of Melbourne and Western Health, Sunshine Hospital, St Albans, VIC, 3021, Australia
| | - Chau H Nguyen
- College of Health and Biomedicine, Victoria University, St Albans, VIC, 8001, Australia
| | - Elizabeth D Williams
- Institute of Health and Biomedical Innovation and School of Biomedical Sciences, Queensland University of Technology, 2 George Street, Brisbane, QLD, 4001, Australia.,Translational Research Institute, 37 Kent Street, Woolloongabba, QLD, 4102, Australia.,Australian Prostate Cancer Centre - Queensland, Brisbane, QLD, 4102, Australia
| | - Michael Henderson
- Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, VIC, 3156, Australia.,Division of Surgery, Peter MacCallum Cancer Centre, Melbourne, VIC, 3002, Australia
| | - Erik W Thompson
- Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, VIC, 3156, Australia. .,St Vincent's Institute of Medical Research, Melbourne, VIC, 3156, Australia. .,Institute of Health and Biomedical Innovation and School of Biomedical Sciences, Queensland University of Technology, 2 George Street, Brisbane, QLD, 4001, Australia. .,Translational Research Institute, 37 Kent Street, Woolloongabba, QLD, 4102, Australia.
| | - Kara L Britt
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Grattan Street, Parkville, VIC, 3010, Australia.,Department of Anatomy and Developmental Biology, Monash University, Melbourne, VIC, 3800, Australia.,Metastasis Research Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria, 3000, Australia
| |
Collapse
|
5
|
Huo CW, Huang D, Chew GL, Hill P, Vohora A, Ingman WV, Glynn DJ, Godde N, Henderson MA, Thompson EW, Britt KL. Human glandular organoid formation in murine engineering chambers after collagenase digestion and flow cytometry isolation of normal human breast tissue single cells. Cell Biol Int 2016; 40:1212-1223. [PMID: 27590622 DOI: 10.1002/cbin.10675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 08/28/2016] [Indexed: 11/07/2022]
Abstract
Women with high mammographic density (MD) are at increased risk of breast cancer (BC) after adjustment for age and body mass index. We have developed a murine biochamber model in which both high MD (HMD) and low MD (LMD) tissue can be propagated. Here, we tested whether cells isolated by collagenase digestion and fluorescence-activated cell sorting (FACS) from normal breast can be reconstituted in our biochamber model, which would allow cell-specific manipulations to be tested. Fresh breast tissue was collected from women (n = 7) undergoing prophylactic mastectomy. The tissue underwent collagenase digestion overnight and, in some cases, additional FACS enrichment to obtain mature epithelial, luminal progenitor, mammary stem, and stromal cells. Cells were then transferred bilaterally into biochambers in SCID mice (n = 5-7) and incubated for 6 weeks, before harvesting for histological analyses, and immunohistochemical staining for cytokeratins (CK), vimentin, Ki-67, murine macrophages, and Cleaved Caspase-3. Biochambers inoculated with single cells after collagenase digestion or with flow cytometry contained glandular structures of human origin (human vimentin-positive), which expressed CK-14 and pan-CK, and were proliferating (Ki-67-positive). Glandular structures from the digested tissues were smaller than those in chambers seeded with finely chopped intact mammary tissue. Mouse macrophage infiltration was higher in the chambers arising from digested tissues. Pooled single cells and FACS fractionated cells were viable in the murine biochambers and formed proliferating glandular organoids of human origin. This is among the first report to demonstrate the success of formed human glandular organoids from isolated primary mammary cells in the murine biochamber model.
Collapse
Affiliation(s)
- Cecilia W Huo
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia.
| | - Dexing Huang
- St. Vincent's Institute of Medical Research, Melbourne, Australia
| | - Grace L Chew
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia
| | - Prue Hill
- Department of Pathology, St. Vincent's Hospital, Melbourne, Australia
| | - Ambika Vohora
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia
| | - Wendy V Ingman
- School of Medicine at the Queen Elizabeth Hospital, University of Adelaide, Adelaide, Australia.,Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - Danielle J Glynn
- School of Medicine at the Queen Elizabeth Hospital, University of Adelaide, Adelaide, Australia.,Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - Nathan Godde
- Cell Cycle and Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, Melbourne, Australia.,The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Michael A Henderson
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia.,Division of Surgery, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Erik W Thompson
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia.,Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology and Translational Research Institute, Brisbane, Australia
| | - Kara L Britt
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia.,Metastasis Research Laboratory, Peter MacCallum Cancer Centre, Melbourne, Australia
| |
Collapse
|
6
|
Sherratt MJ, McConnell JC, Streuli CH. Raised mammographic density: causative mechanisms and biological consequences. Breast Cancer Res 2016; 18:45. [PMID: 27142210 PMCID: PMC4855337 DOI: 10.1186/s13058-016-0701-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
High mammographic density is the most important risk factor for breast cancer, after ageing. However, the composition, architecture, and mechanical properties of high X-ray density soft tissues, and the causative mechanisms resulting in different mammographic densities, are not well described. Moreover, it is not known how high breast density leads to increased susceptibility for cancer, or the extent to which it causes the genomic changes that characterise the disease. An understanding of these principals may lead to new diagnostic tools and therapeutic interventions.
Collapse
Affiliation(s)
- Michael J Sherratt
- Faculties of Life and Medical and Human Sciences, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - James C McConnell
- Faculties of Life and Medical and Human Sciences, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Charles H Streuli
- Faculties of Life and Medical and Human Sciences, University of Manchester, Oxford Road, Manchester, M13 9PT, UK.
| |
Collapse
|
7
|
Chew GL, Huo CW, Huang D, Hill P, Cawson J, Frazer H, Hopper JL, Haviv I, Henderson MA, Britt K, Thompson EW. Increased COX-2 expression in epithelial and stromal cells of high mammographic density tissues and in a xenograft model of mammographic density. Breast Cancer Res Treat 2015; 153:89-99. [PMID: 26227474 DOI: 10.1007/s10549-015-3520-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 07/22/2015] [Indexed: 11/25/2022]
Abstract
Mammographic density (MD) adjusted for age and body mass index is one of the strongest known risk factors for breast cancer. Given the high attributable risk of MD for breast cancer, chemoprevention with a safe and available agent that reduces MD and breast cancer risk would be beneficial. Cox-2 has been implicated in MD-related breast cancer risk, and was increased in stromal cells in high MD tissues in one study. Our study assessed differential Cox-2 expression in epithelial and stromal cells in paired samples of high and low MD human breast tissue, and in a validated xenograft biochamber model of MD. We also examined the effects of endocrine treatment upon Cox-2 expression in high and low MD tissues in the MD xenograft model. Paired high and low MD human breast tissue samples were immunostained for Cox-2, then assessed for differential expression and staining intensity in epithelial and stromal cells. High and low MD human breast tissues were separately maintained in biochambers in mice treated with Tamoxifen, oestrogen or placebo implants, then assessed for percentage Cox-2 staining in epithelial and stromal cells. Percentage Cox-2 staining was greater for both epithelial (p = 0.01) and stromal cells (p < 0.0001) of high compared with low MD breast tissues. In high MD biochamber tissues, percentage Cox-2 staining was greater in stromal cells of oestrogen-treated versus placebo-treated tissues (p = 0.05).
Collapse
Affiliation(s)
- G L Chew
- University of Melbourne Department of Surgery, St Vincent's Hospital, Melbourne, VIC, Australia,
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Huo CW, Chew G, Hill P, Huang D, Ingman W, Hodson L, Brown KA, Magenau A, Allam AH, McGhee E, Timpson P, Henderson MA, Thompson EW, Britt K. High mammographic density is associated with an increase in stromal collagen and immune cells within the mammary epithelium. Breast Cancer Res 2015; 17:79. [PMID: 26040322 PMCID: PMC4485361 DOI: 10.1186/s13058-015-0592-1] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 05/20/2015] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Mammographic density (MD), after adjustment for a women's age and body mass index, is a strong and independent risk factor for breast cancer (BC). Although the BC risk attributable to increased MD is significant in healthy women, the biological basis of high mammographic density (HMD) causation and how it raises BC risk remain elusive. We assessed the histological and immunohistochemical differences between matched HMD and low mammographic density (LMD) breast tissues from healthy women to define which cell features may mediate the increased MD and MD-associated BC risk. METHODS Tissues were obtained between 2008 and 2013 from 41 women undergoing prophylactic mastectomy because of their high BC risk profile. Tissue slices resected from the mastectomy specimens were X-rayed, then HMD and LMD regions were dissected based on radiological appearance. The histological composition, aromatase immunoreactivity, hormone receptor status and proliferation status were assessed, as were collagen amount and orientation, epithelial subsets and immune cell status. RESULTS HMD tissue had a significantly greater proportion of stroma, collagen and epithelium, as well as less fat, than LMD tissue did. Second harmonic generation imaging demonstrated more organised stromal collagen in HMD tissues than in LMD tissues. There was significantly more aromatase immunoreactivity in both the stromal and glandular regions of HMD tissues than in those regions of LMD tissues, although no significant differences in levels of oestrogen receptor, progesterone receptor or Ki-67 expression were detected. The number of macrophages within the epithelium or stroma did not change; however, HMD stroma exhibited less CD206(+) alternatively activated macrophages. Epithelial cell maturation was not altered in HMD samples, and no evidence of epithelial-mesenchymal transition was seen; however, there was a significant increase in vimentin(+)/CD45(+) immune cells within the epithelial layer in HMD tissues. CONCLUSIONS We confirmed increased proportions of stroma and epithelium, increased aromatase activity and no changes in hormone receptor or Ki-67 marker status in HMD tissue. The HMD region showed increased collagen deposition and organisation as well as decreased alternatively activated macrophages in the stroma. The HMD epithelium may be a site for local inflammation, as we observed a significant increase in CD45(+)/vimentin(+) immune cells in this area.
Collapse
Affiliation(s)
- Cecilia W Huo
- University of Melbourne Department of Surgery, St. Vincent's Hospital, Level 2, Clinical Sciences Building, 29 Regent Street, Fitzroy, VIC, 3065, Australia.
| | - Grace Chew
- University of Melbourne Department of Surgery, St. Vincent's Hospital, Level 2, Clinical Sciences Building, 29 Regent Street, Fitzroy, VIC, 3065, Australia.
| | - Prue Hill
- Department of Pathology, St. Vincent's Hospital, 41 Victoria Parade, Fitzroy, VIC, 3065, Australia.
| | - Dexing Huang
- St. Vincent's Institute, 9 Princes Street, Fitzroy, VIC, 3065, Australia.
| | - Wendy Ingman
- Discipline of Surgery, Faculty of Health Sciences, School of Medicine, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, Australia. .,Robinson Research Institute, University of Adelaide, Ground Floor, Norwich Centre, 55 King William Road, North Adelaide, SA, 5006, Australia.
| | - Leigh Hodson
- Discipline of Surgery, Faculty of Health Sciences, School of Medicine, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, Australia. .,Robinson Research Institute, University of Adelaide, Ground Floor, Norwich Centre, 55 King William Road, North Adelaide, SA, 5006, Australia.
| | - Kristy A Brown
- Hudson Institute of Medical Research, 27-31 Wright Street, Clayton, VIC, 3168, Australia.
| | - Astrid Magenau
- Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Australia. .,St Vincent's Clinical School, Faculty of Medicine, University of NSW, Sydney, Australia. .,St Vincent's Clinical School, Faculty of Medicine, University of NSW, Clayton, Australia.
| | - Amr H Allam
- Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Australia. .,St Vincent's Clinical School, Faculty of Medicine, University of NSW, Sydney, Australia. .,St Vincent's Clinical School, Faculty of Medicine, University of NSW, Clayton, Australia.
| | - Ewan McGhee
- St Vincent's Clinical School, Faculty of Medicine, University of NSW, Sydney, Australia.
| | - Paul Timpson
- Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Australia. .,St Vincent's Clinical School, Faculty of Medicine, University of NSW, Sydney, Australia. .,St Vincent's Clinical School, Faculty of Medicine, University of NSW, Clayton, Australia.
| | - Michael A Henderson
- University of Melbourne Department of Surgery, St. Vincent's Hospital, Level 2, Clinical Sciences Building, 29 Regent Street, Fitzroy, VIC, 3065, Australia. .,Peter MacCallum Cancer Centre, 2 St. Andrews Place, East Melbourne, VIC, 3002, Australia.
| | - Erik W Thompson
- University of Melbourne Department of Surgery, St. Vincent's Hospital, Level 2, Clinical Sciences Building, 29 Regent Street, Fitzroy, VIC, 3065, Australia. .,St. Vincent's Institute, 9 Princes Street, Fitzroy, VIC, 3065, Australia. .,Institute of Health and Biomedical Innovation and School of Biomedical Sciences, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, QLD, 4059, Australia.
| | - Kara Britt
- The Beatson Institute for Cancer Research, Switchback Road, Bearsden Glasgow, G61 1BD, UK. .,The Sir Peter MacCallum Department of Oncology, University of Melbourne, St. Andrews Place, East Melbourne, VIC, 3002, Australia. .,Department of Anatomy and Developmental Biology, Monash University, 19 Innovation Walk, Clayton, VIC, s, Australia.
| |
Collapse
|
9
|
Effects of Tamoxifen and oestrogen on histology and radiographic density in high and low mammographic density human breast tissues maintained in murine tissue engineering chambers. Breast Cancer Res Treat 2014; 148:303-14. [PMID: 25332094 DOI: 10.1007/s10549-014-3169-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 10/13/2014] [Indexed: 10/24/2022]
Abstract
Mammographic density (MD) is a strong risk factor for breast cancer. It is altered by exogenous endocrine treatments, including hormone replacement therapy and Tamoxifen. Such agents also modify breast cancer (BC) risk. However, the biomolecular basis of how systemic endocrine therapy modifies MD and MD-associated BC risk is poorly understood. This study aims to determine whether our xenograft biochamber model can be used to study the effectiveness of therapies aimed at modulating MD, by examine the effects of Tamoxifen and oestrogen on histologic and radiographic changes in high and low MD tissues maintained within the biochamber model. High and low MD human tissues were precisely sampled under radiographic guidance from prophylactic mastectomy fresh specimens of high-risk women, then inserted into separate vascularized murine biochambers. The murine hosts were concurrently implanted with Tamoxifen, oestrogen or placebo pellets, and the high and low MD biochamber tissues maintained in the murine host environment for 3 months, before the high and low MD biochamber tissues were harvested for histologic and radiographic analyses. The radiographic density of high MD tissue maintained in murine biochambers was decreased in Tamoxifen-treated mice compared to oestrogen-treated mice (p = 0.02). Tamoxifen treatment of high MD tissue in SCID mice led to a decrease in stromal (p = 0.009), and an increase in adipose (p = 0.023) percent areas, compared to placebo-treated mice. No histologic or radiographic differences were observed in low MD biochamber tissue with any treatment. High MD biochamber tissues maintained in mice implanted with Tamoxifen, oestrogen or placebo pellets had dynamic and measurable histologic compositional and radiographic changes. This further validates the dynamic nature of the MD xenograft model, and suggests the biochamber model may be useful for assessing the underlying molecular pathways of Tamoxifen-reduced MD, and in testing of other pharmacologic interventions in a preclinical model of high MD.
Collapse
|
10
|
Huo CW, Chew GL, Britt KL, Ingman WV, Henderson MA, Hopper JL, Thompson EW. Mammographic density-a review on the current understanding of its association with breast cancer. Breast Cancer Res Treat 2014; 144:479-502. [PMID: 24615497 DOI: 10.1007/s10549-014-2901-2] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 02/24/2014] [Indexed: 01/07/2023]
Abstract
There has been considerable recent interest in the genetic, biological and epidemiological basis of mammographic density (MD), and the search for causative links between MD and breast cancer (BC) risk. This report will critically review the current literature on MD and summarize the current evidence for its association with BC. Keywords 'mammographic dens*', 'dense mammary tissue' or 'percent dens*' were used to search the existing literature in English on PubMed and Medline. All reports were critically analyzed. The data were assigned to one of the following aspects of MD: general association with BC, its relationship with the breast hormonal milieu, the cellular basis of MD, the generic variations of MD, and its significance in the clinical setting. MD adjusted for age, and BMI is associated with increased risk of BC diagnosis, advanced tumour stage at diagnosis and increased risk of both local recurrence and second primary cancers. The MD measures that predict BC risk have high heritability, and to date several genetic markers associated with BC risk have been found to also be associated with these MD risk predictors. Change in MD could be a predictor of the extent of chemoprevention with tamoxifen. Although the biological and genetic pathways that determine and perhaps modulate MD remain largely unresolved, significant inroads are being made into the understanding of MD, which may lead to benefits in clinical screening, assessment and treatment strategies. This review provides a timely update on the current understanding of MD's association with BC risk.
Collapse
Affiliation(s)
- C W Huo
- Department of Surgery, University of Melbourne, St. Vincent's Hospital, Melbourne, Australia,
| | | | | | | | | | | | | |
Collapse
|
11
|
Chew GL, Huang D, Huo CW, Blick T, Hill P, Cawson J, Frazer H, Southey MD, Hopper JL, Henderson MA, Haviv I, Thompson EW. Dynamic changes in high and low mammographic density human breast tissues maintained in murine tissue engineering chambers during various murine peripartum states and over time. Breast Cancer Res Treat 2013; 140:285-97. [DOI: 10.1007/s10549-013-2642-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 07/12/2013] [Indexed: 11/30/2022]
|