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Gotnayer Lilian L, Nahmias Y, Yazbek Grobman G, Friedlander L, Aranovich D, Yoel U, Vidavsky N. The interplay between crystallinity and the levels of Zn and carbonate in synthetic microcalcifications directs thyroid cell malignancy. J Mater Chem B 2024; 12:4509-4520. [PMID: 38647022 DOI: 10.1039/d3tb02256k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
One of the key challenges in diagnosing thyroid cancer lies in the substantial percentage of indeterminate diagnoses of thyroid nodules that have undergone ultrasound-guided fine-needle aspiration (FNA) biopsy for cytological evaluation. This delays the definitive diagnosis and treatment plans. We recently demonstrated that hydroxyapatite microcalcifications (MCs) aspirated from thyroid nodules may aid nodule diagnosis based on their composition. In particular, Zn-enriched MCs have emerged as potential cancer biomarkers. However, a pertinent question remains: is the elevated Zn content within MCs a consequence of cancer, or do the Zn-enriched MCs encourage tumorigenesis? To address this, we treated the human thyroid cancer cell line MDA-T32 with synthetic MC analogs comprising hydroxyapatite crystals with varied pathologically relevant Zn fractions and assessed the cellular response. The MC analogs exhibited an irregular surface morphology similar to FNA MCs observed in cancerous thyroid nodules. These MC analogs displayed an inverse relationship between Zn fraction and crystallinity, as shown by X-ray diffractometry. The zeta potential of the non-Zn-bearing hydroxyapatite crystals was negative, which decreased once Zn was incorporated into the crystal. The MC analogs were not cytotoxic. The cellular response to exposure to these crystals was evaluated in terms of cell migration, proliferation, the tendency of the cells to form multicellular spheroids, and the expression of cancer markers. Our findings suggest that, if thyroid MCs play a role in promoting cancerous behavior in vivo, it is likely a result of the interplay of crystallinity with Zn and carbonate fractions in MCs.
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Affiliation(s)
- Lotem Gotnayer Lilian
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Yarden Nahmias
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Gabriel Yazbek Grobman
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Lonia Friedlander
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Dina Aranovich
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Uri Yoel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Endocrinology, Soroka University Medical Center, Beer Sheva, Israel
| | - Netta Vidavsky
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
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Nahmias Y, Yazbek Grobman G, Vidavsky N. Inhibiting Pathological Calcium Phosphate Mineralization: Implications for Disease Progression. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18344-18359. [PMID: 38578869 DOI: 10.1021/acsami.3c17717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
Pathological calcifications, especially calcium phosphate microcalcifications (MCs), appear in most early breast cancer lesions, and their formation correlates with more aggressive tumors and a poorer prognosis. Hydroxyapatite (HA) is a key MC component that crystallizes in the tumor microenvironment. It is often associated with malignant breast cancer lesions and can trigger tumorigenesis in vitro. Here, we investigate the impact of additives on HA crystallization and inhibition, and how precancerous breast cells respond to minerals that are deposited in the presence of these additives. We show that nonstoichiometric HA spontaneously crystallizes in a solution simulating the tumor microenvironmental fluids and exhibits lump-like morphology similar to breast cancer MCs. In this system, the effectiveness of poly(aspartic acid) and poly(acrylic acid) (PAA) to inhibit HA is examined as a potential route to improve cancer prognosis. In the presence of additives, the formation of HA lumps is associated with the promotion or only minimal inhibition of mineralization, whereas the formation of amorphous calcium phosphate (ACP) lumps is followed by inhibition of mineralization. PAA emerges as a robust HA inhibitor by forming spherical ACP particles. When precancerous breast cells are exposed to various HA and ACP minerals, the most influential factors on cell proliferation are the mineral phase and whether the mineral is in the form of discrete particles or particle aggregates. The tumorigenic effects on cells, ranging from cytotoxicity and suppression of proliferation to triggering of proliferation, can be summarized as HA particles < HA aggregates < ACP particles < ACP aggregates. The cellular response to minerals can be attributed to a combination of factors, including mineral phase, crystallinity, morphology, surface texture, aggregation state, and surface potential. These findings have implications for understanding mineral-cell interactions within the tumor microenvironment and suggest that, in some cases, the byproducts of HA inhibition can contribute to disease progression more than HA itself.
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Affiliation(s)
- Yarden Nahmias
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Gabriel Yazbek Grobman
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Netta Vidavsky
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
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Lyburn ID, Scott R, Cornford E, Bouzy P, Stone N, Greenwood C, Bouybayoune I, Pinder SE, Rogers K. Translating microcalcification biomarker information into the laboratory: A preliminary assessment utilizing core biopsies obtained from sites of mammographic calcification. Heliyon 2024; 10:e27686. [PMID: 38509936 PMCID: PMC10950651 DOI: 10.1016/j.heliyon.2024.e27686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/22/2024] Open
Abstract
Rationale and objectives The potential of breast microcalcification chemistry to provide clinically valuable intelligence is being increasingly studied. However, acquisition of crystallographic details has, to date, been limited to high brightness, synchrotron radiation sources. This study, for the first time, evaluates a laboratory-based system that interrogates histological sections containing microcalcifications. The principal objective was to determine the measurement precision of the laboratory system and assess whether this was sufficient to provide potentially clinical valuable information. Materials and methods Sections from 5 histological specimens from breast core biopsies obtained to evaluate mammographic calcification were examined using a synchrotron source and a laboratory-based instrument. The samples were chosen to represent a significant proportion of the known breast tissue, mineralogical landscape. Data were subsequently analysed using conventional methods and microcalcification characteristics such as crystallographic phase, chemical deviation from ideal stoichiometry and microstructure were determined. Results The crystallographic phase of each microcalcification (e.g., hydroxyapatite, whitlockite) was easily determined from the laboratory derived data even when a mixed phase was apparent. Lattice parameter values from the laboratory experiments agreed well with the corresponding synchrotron values and, critically, were determined to precisions that were significantly greater than required for potential clinical exploitation. Conclusion It has been shown that crystallographic characteristics of microcalcifications can be determined in the laboratory with sufficient precision to have potential clinical value. The work will thus enable exploitation acceleration of these latent microcalcification features as current dependence upon access to limited synchrotron resources is minimized.
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Affiliation(s)
- Iain D. Lyburn
- Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom
| | - Robert Scott
- Cranfield Forensic Institute, Cranfield University, Swindon, United Kingdom
| | - Eleanor Cornford
- Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom
| | - Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, United Kingdom
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, United Kingdom
| | - Charlene Greenwood
- School of Chemical and Physical Sciences, Keele University, Staffordshire, United Kingdom
| | - Ihsanne Bouybayoune
- School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Sarah E. Pinder
- School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Swindon, United Kingdom
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Morasso C, Vanna R, Piccotti F, Frizzi L, Truffi M, Albasini S, Borca C, Huthwelker T, Villani L, Bunk O, Giannini C, Corsi F. Whitlockite has a characteristic distribution in mammary microcalcifications and it is not associated with breast cancer. Cancer Commun (Lond) 2023; 43:1169-1173. [PMID: 37688557 PMCID: PMC10565373 DOI: 10.1002/cac2.12481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 06/20/2023] [Accepted: 08/22/2023] [Indexed: 09/11/2023] Open
Affiliation(s)
- Carlo Morasso
- Istituti Clinici Scientifici Maugeri IRCCSPaviaItaly
| | - Renzo Vanna
- National Research Council (IFN‐CNR)Institute for Photonics and NanotechnologiesMilanItaly
| | | | - Lidia Frizzi
- Istituti Clinici Scientifici Maugeri IRCCSPaviaItaly
| | - Marta Truffi
- Istituti Clinici Scientifici Maugeri IRCCSPaviaItaly
| | - Sara Albasini
- Istituti Clinici Scientifici Maugeri IRCCSPaviaItaly
| | | | | | - Laura Villani
- Istituti Clinici Scientifici Maugeri IRCCSPaviaItaly
| | - Oliver Bunk
- Paul Scherrer InstitutVilligen PSISwitzerland
| | - Cinzia Giannini
- National Research CouncilInstitute of CrystallographyBariItaly
| | - Fabio Corsi
- Istituti Clinici Scientifici Maugeri IRCCSPaviaItaly
- Department of Biomedical and Clinical SciencesUniversity of MilanMilanItaly
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Cohen A, Gotnayer L, Gal S, Aranovich D, Vidavsky N. Multicellular spheroids containing synthetic mineral particles: an advanced 3D tumor model system to investigate breast precancer malignancy potential according to the mineral type. J Mater Chem B 2023; 11:8033-8045. [PMID: 37534429 DOI: 10.1039/d3tb00439b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Mineral particles that form in soft tissues in association with disease conditions are heterogeneous in their composition and physiochemical properties. Hence, it is challenging to study the effect of mineral type on disease progression in a high-throughput and realistic manner. For example, most early breast precancer lesions, termed ductal carcinoma in situ (DCIS), contain microcalcifications (MCs), calcium-containing pathological minerals. The most common type of MCs is calcium phosphate crystals, mainly carbonated apatite; it is associated with either benign or malignant lesions. In vitro studies indicate that the crystal properties of apatite MCs can affect breast cancer progression. A less common type of MCs is calcium oxalate dihydrate (COD), which is almost always found in benign lesions. We developed a 3D tumor model of multicellular spheroids of human precancer cells containing synthetic MC analogs that link the crystal properties of MCs with the progression of breast precancer to invasive cancer. Using this 3D model, we show that apatite crystals induce Her2 overexpression in DCIS cells. This tumor-triggering effect is increased when the carbonate fraction in the MCs decreases. COD crystals, in contrast, decrease Her2 expression in the spheroids, even compared with a control group with no added MC analogs. Furthermore, COD decreases cell proliferation and migration in DCIS monolayers compared to untreated cells and cells incubated with apatite crystals. This finding suggests that COD is not randomly located only in benign lesions-it may actively contribute to suppressing precancer progression in its surroundings. Our model provides an easy-to-manipulate platform to better understand the interactions between mineral particles and their biological microenvironment. A better understanding of the effect of the crystal properties of MCs on precancer progression will potentially provide new directions for better precancer prognosis and treatment.
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Affiliation(s)
- Amit Cohen
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Lotem Gotnayer
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Sahar Gal
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Dina Aranovich
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Netta Vidavsky
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
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Hu Y, Mao L, Wang M, Li Z, Li M, Wang C, Ji L, Zeng H, Zhang X. New insights into breast microcalcification for poor prognosis: NACT cohort and bone metastasis evaluation cohort. J Cancer Res Clin Oncol 2023; 149:7285-7297. [PMID: 36917189 DOI: 10.1007/s00432-023-04668-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 02/23/2023] [Indexed: 03/15/2023]
Abstract
OBJECTIVES The study aimed to analyze the poor prognosis of microcalcification in breast cancer (BC), including the pathological complete response (pCR) to neoadjuvant chemotherapy (NACT) and the risk of bone metastases. MATERIALS AND METHODS 313 breast cancer patients received NACT to evaluate pCR and 1182 patients from a multicenter database to assess bone metastases were retrospectively included. Two groups were divided according to the presence or absence of mammography microcalcification. Clinical data, image characteristics, neoadjuvant treatment response, bone involvement, and follow-up information were recorded. The pCR and bone metastases were compared between subgroups using the Mann-Whitney and χ2 tests and logistic regression, respectively. RESULTS Mammographic microcalcification was associated with a lower pCR than uncalcified BC in the NACT cohort (20.6% vs 31.6%, P = 0.029). Univariate and multivariate analysis suggested that calcification was a risk factor for poor NACT response [OR = 1.780, 95%CI (1.065-2.974), P = 0.028], [OR = 2.352, 95%CI (1.186-4.667), P = 0.014]. Microcalcification was more likely to be necrosis on MRI than those without microcalcification (53.0% vs 31.7%, P < 0.001), multivariate analysis indicated that tumor necrosis was also a risk factor for poor NACT response [OR = 2.325, 95%CI (1.100-4.911), P = 0.027]. Age, menopausal status, breast density, mass, molecular, and pathology type were not significantly associated with non-pCR risk assessment. In a multicenter cohort of 1182 patients with pathologically confirmed BC, those with microcalcifications had a higher proportion of bone metastases compared to non-calcified BC (11.6% vs 4.9%, P < 0.001). Univariate and multivariate analysis showed that microcalcification was an independent risk factor for bone metastasis [OR = 2.550, 95%CI (1.620-4.012), P < 0.001], [OR = 2.268(1.263-4.071), P = 0.006)]. Osteolytic bone metastases predominated but there was no statistical difference between the two groups (78.9% vs 60.7%, P = 0.099). Calcified BC was mainly involved in axial bone, but was more likely to involve the whole-body bone than non-calcified BC (33.8% vs 10.7%, P = 0.021). CONCLUSION This study provides important insights into the poor prognosis of microcalcification, not only in terms of poor response to NACT but also the risk factor of bone metastases.
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Affiliation(s)
- Yangling Hu
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lijuan Mao
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Mengyi Wang
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhenqiu Li
- Department of Radiology, The Panyu Fifth Hospital, Guangzhou, China
| | - Meizhi Li
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Chaoyang Wang
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lin Ji
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Hui Zeng
- Department of Radiology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Xiaoling Zhang
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
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Bouzy P, Lyburn ID, Pinder SE, Scott R, Mansfield J, Moger J, Greenwood C, Bouybayoune I, Cornford E, Rogers K, Stone N. Exploration of utility of combined optical photothermal infrared and Raman imaging for investigating the chemical composition of microcalcifications in breast cancer. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1620-1630. [PMID: 36880909 PMCID: PMC10065137 DOI: 10.1039/d2ay01197b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 02/21/2023] [Indexed: 06/02/2023]
Abstract
Microcalcifications play an important role in cancer detection. They are evaluated by their radiological and histological characteristics but it is challenging to find a link between their morphology, their composition and the nature of a specific type of breast lesion. Whilst there are some mammographic features that are either typically benign or typically malignant often the appearances are indeterminate. Here, we explore a large range of vibrational spectroscopic and multiphoton imaging techniques in order to gain more information about the composition of the microcalcifications. For the first time, we validated the presence of carbonate ions in the microcalcifications by O-PTIR and Raman spectroscopy at the same time, the same location and the same high resolution (0.5 μm). Furthermore, the use of multiphoton imaging allowed us to create stimulated Raman histology (SRH) images which mimic histological images with all chemical information. In conclusion, we established a protocol for efficiently analysing the microcalcifications by iteratively refining the area of interest.
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Affiliation(s)
- Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
| | - Iain D Lyburn
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
- Gloucestershire Hospitals NHS Foundation Trust, UK
| | - Sarah E Pinder
- King's College London, Comprehensive Cancer Centre at Guy's Hospital, London, UK
| | - Robert Scott
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | | | - Julian Moger
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
| | - Charlene Greenwood
- School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, UK
| | - Ihssane Bouybayoune
- King's College London, Comprehensive Cancer Centre at Guy's Hospital, London, UK
| | | | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | - Nick Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
- Gloucestershire Hospitals NHS Foundation Trust, UK
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Gotnayer L, Aranovich D, Fraenkel M, Yoel U, Vidavsky N. Zinc in microscopic calcifications isolated from thyroid fine needle aspiration may serve as a biomarker of thyroid nodule malignancy: A promising proof-of-concept. Acta Biomater 2023; 161:275-284. [PMID: 36931418 DOI: 10.1016/j.actbio.2023.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 03/17/2023]
Abstract
Thyroid nodules (TNs) are common neck ultrasonography (US) findings, yet only 5-10% of these nodules harbor thyroid cancer (TC). When US characteristics are consistent with an intermediate or high suspicion for TN malignancy, fine needle aspiration for cytology (FNAC) is indicated. The main limitation of FNAC is that cytological results can be indeterminate in up to 30% of cases, necessitating reevaluation through repeated FNAC, expensive molecular testing, or diagnostic thyroid lobe resection. As such, there is a need for further refinement of current diagnostic algorithms for TNs without subjecting patients to additional invasive procedures. As calcifications detected during thyroid US are considered a high-risk feature for malignancy, we used the material remaining following routine thyroid FNAC to isolate microscopic calcifications (MCs). We then characterized the elemental composition, morphology, and crystal phases of these MCs, ultimately revealing differences between the MCs from benign and malignant TNs. Specifically, thyroid MCs were identified as calcium phosphate crystals containing varying levels of magnesium, sodium, iron, and zinc. MCs obtained from malignant TNs, mainly papillary thyroid carcinoma, were composed of sub-micrometer spherical particles, whereas MCs from benign TNs consisted of faceted particles. While samples from most patients with a final diagnosis of malignant TNs (50% of them with indeterminate cytology) harbored zinc-containing MCs, zinc was largely absent in MCs from benign TNs (23% with indeterminate or non-diagnostic cytology). Together, these data suggest that the presence of zinc in MCs isolated from samples collected during routine FNAC may potentially offer value as a biomarker of TN malignancy. STATEMENT OF SIGNIFICANCE: As up to 40% of patients assessed for thyroid malignancy do not receive a definite diagnosis following thyroid nodule (TN) fine needle aspiration (FNA), there is a pressing need to improve the accuracy of current diagnostic algorithms. Chemical analyses of microscopic calcifications (MCs) may serve as a diagnostic target. We developed a straightforward protocol to chemically characterize MCs from excess material collected from TNs during routine FNA and found that these MCs differed between benign and malignant TNs. Specifically, zinc in TN-derived MCs may indicate a higher nodule malignancy risk, thus increasing the diagnostic accuracy of the FNA procedure, reducing the need for recurrent biopsies and diagnostic surgical procedures, and decreasing the costs, uncertainty, and stress faced by affected patients.
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Affiliation(s)
- Lotem Gotnayer
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Dina Aranovich
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Merav Fraenkel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel; Endocrinology, Soroka University Medical Center, Beer Sheva, Israel
| | - Uri Yoel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel; Endocrinology, Soroka University Medical Center, Beer Sheva, Israel.
| | - Netta Vidavsky
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel; Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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Shah FA. The many facets of micropetrosis - Magnesium whitlockite deposition in bisphosphonate-exposed human alveolar bone with osteolytic metastasis. Micron 2023; 168:103441. [PMID: 36924676 DOI: 10.1016/j.micron.2023.103441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 03/06/2023]
Abstract
The lacuno-canalicular space of apoptotic osteocytes eventually becomes mineralised in vivo. This condition is known as micropetrosis and is a fundamental characteristic of ageing bone. Increased prevalence of such hypermineralised osteocyte lacunae is viewed as a structural marker of impaired bone function - both mechanical and biological. Within the lacuno-canalicular space, mineralised apoptotic debris typically occurs as micrometre-sized, spherical nodules of magnesium-rich, carbonated apatite. Moreover, characteristically facetted, rhomboidal nodules of magnesium whitlockite [Mg-whitlockite; Ca18Mg2(HPO4)2(PO4)12] have been reported in human alveolar bone exposed to the bisphosphonate alendronate. This work provides supporting evidence for Mg-whitlockite formation in the alveolar bone of a 70-year-old male exposed to the bisphosphonate zoledronic acid to suppress osteolytic changes in skeletal metastasis. Backscattered electron scanning electron microscopy (BSE-SEM) revealed spherical and rhomboidal nodules within the lacuno-canalicular space. A variant of spherical nodules exhibited a fuzzy surface layer comprising radially extending acicular crystallites. The rhomboidal nodules ranged between ∼200 nm to ∼2.4 µm across the widest dimension (652 ± 331 nm). Micro-Raman spectroscopy and energy dispersive X-ray spectroscopy confirmed that rhomboidal nodules are compositionally distinct from spherical nodules, exhibiting higher Mg content and lower Ca/P ratio. Formation of Mg-whitlockite within osteocyte lacunae is multifactorial in nature and suggests altered bone biomineralisation. Nevertheless, the underlying mechanism(s) and sequence of events remain poorly understood and warrant further investigation. The possibility to discriminate between carbonated apatite and Mg-whitlockite nodules within osteocyte lacunae, based on particle morphology, attests to the diagnostic potential of BSE-SEM with or without additional analyses of material composition.
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Affiliation(s)
- Furqan A Shah
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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Kunitake JA, Sudilovsky D, Johnson LM, Loh HC, Choi S, Morris PG, Jochelson MS, Iyengar NM, Morrow M, Masic A, Fischbach C, Estroff LA. Biomineralogical signatures of breast microcalcifications. SCIENCE ADVANCES 2023; 9:eade3152. [PMID: 36812311 PMCID: PMC9946357 DOI: 10.1126/sciadv.ade3152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Microcalcifications, primarily biogenic apatite, occur in cancerous and benign breast pathologies and are key mammographic indicators. Outside the clinic, numerous microcalcification compositional metrics (e.g., carbonate and metal content) are linked to malignancy, yet microcalcification formation is dependent on microenvironmental conditions, which are notoriously heterogeneous in breast cancer. We interrogate multiscale heterogeneity in 93 calcifications from 21 breast cancer patients using an omics-inspired approach: For each microcalcification, we define a "biomineralogical signature" combining metrics derived from Raman microscopy and energy-dispersive spectroscopy. We observe that (i) calcifications cluster into physiologically relevant groups reflecting tissue type and local malignancy; (ii) carbonate content exhibits substantial intratumor heterogeneity; (iii) trace metals including zinc, iron, and aluminum are enhanced in malignant-localized calcifications; and (iv) the lipid-to-protein ratio within calcifications is lower in patients with poor composite outcome, suggesting that there is potential clinical value in expanding research on calcification diagnostic metrics to include "mineral-entrapped" organic matrix.
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Affiliation(s)
| | - Daniel Sudilovsky
- Department of Pathology and Laboratory Medicine, Cayuga Medical Center at Ithaca, Ithaca, NY 14850, USA
- Pathology Department, Kingman Regional Medical Center, Kingman, AZ 86409, USA
- Pathology Department, Western Arizona Medical Center, Bullhead City, AZ 86442, USA
- Pathology Department, Yuma Regional Medical Center, Yuma, AZ 85364, USA
| | - Lynn M. Johnson
- Cornell Statistical Consulting Unit, Cornell University, Ithaca, NY 14850, USA
| | - Hyun-Chae Loh
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Siyoung Choi
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Patrick G. Morris
- Medical Oncology Service, Beaumont Hospital, Dublin, Ireland
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY 10021, USA
| | - Maxine S. Jochelson
- Department of Radiology, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
| | - Neil M. Iyengar
- Department of Medicine, Weill Cornell Medical College, New York, NY 10021, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Monica Morrow
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Admir Masic
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Corresponding author. (L.A.E.); (C.F.); (A.M.)
| | - Claudia Fischbach
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14850, USA
- Corresponding author. (L.A.E.); (C.F.); (A.M.)
| | - Lara A. Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14850, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14850, USA
- Corresponding author. (L.A.E.); (C.F.); (A.M.)
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Korolkovas A. Fast X-ray diffraction (XRD) tomography for enhanced identification of materials. Sci Rep 2022; 12:19097. [PMID: 36351982 PMCID: PMC9646897 DOI: 10.1038/s41598-022-23396-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
Abstract
X-ray computed tomography (CT) is a commercially established modality for imaging large objects like passenger luggage. CT can provide the density and the effective atomic number, which is not always sufficient to identify threats like explosives and narcotics, since they can have a similar composition to benign plastics, glass, or light metals. In these cases, X-ray diffraction (XRD) may be better suited to distinguish the threats. Unfortunately, the diffracted photon flux is typically much weaker than the transmitted one. Measurement of quality XRD data is therefore slower compared to CT, which is an economic challenge for potential customers like airports. In this article we numerically analyze a novel low-cost scanner design which captures CT and XRD signals simultaneously, and uses the least possible collimation to maximize the flux. To simulate a realistic instrument, we propose a forward model that includes the resolution-limiting effects of the polychromatic spectrum, the detector, and all the finite-size geometric factors. We then show how to reconstruct XRD patterns from a large phantom with multiple diffracting objects. We include a reasonable amount of photon counting noise (Poisson statistics), as well as measurement bias (incoherent scattering). Our XRD reconstruction adds material-specific information, albeit at a low resolution, to the already existing CT image, thus improving threat detection. Our theoretical model is implemented in GPU (Graphics Processing Unit) accelerated software which can be used to further optimize scanner designs for applications in security, healthcare, and manufacturing quality control.
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12
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Scott R, Lyburn I, Cornford E, Bouzy P, Stone N, Greenwood C, Bouybayoune I, Pinder S, Rogers K. Breast calcification micromorphology classification. Br J Radiol 2022; 95:20220485. [PMID: 35819921 PMCID: PMC9793474 DOI: 10.1259/bjr.20220485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES The importance of consistent terminology in describing the appearance of breast calcifications in mammography is well recognised. Imaging of calcifications using electron microscopy is a globally growing field of research. We therefore suggest that the time is ripe to develop a lexicon of terms for classifying the micromorphology of breast calcifications. METHODS Calcifications within a wide range of histological sections of breast tissue, both benign and malignant, were imaged by Scanning Electron Microscopy (SEM). These images were examined, and the micromorphology of calcifications present was grouped to create a classification system. RESULTS Based on the appearance of the calcifications observed, we propose five main categories for classification of the micromorphology of breast calcifications, namely, Dense Homogenous, Punctulate, Banded, Spongy and Aggregate. CONCLUSIONS Use of the descriptive categories outlined here will help to ensure consistency and comparability of published observations on the micromorphology of breast calcifications. ADVANCES IN KNOWLEDGE This is the first time a lexicon and classification system has been proposed for the micromorphology of breast calcifications, as observed by scanning electron microscopy of histological sections. This will facilitate comparability of observed relationships between micromorphology, mammographic appearance, chemistry and pathology.
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Affiliation(s)
- Robert Scott
- Cranfield Forensic Institute, Cranfield University, Swindon, United Kingdom
| | - Iain Lyburn
- Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom
| | - Eleanor Cornford
- Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom
| | - Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, United Kingdom
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, United Kingdom
| | - Charlene Greenwood
- School of Chemical and Physical Sciences, Keele University, Staffordshire, United Kingdom
| | - Ihsanne Bouybayoune
- School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Sarah Pinder
- School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Swindon, United Kingdom
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13
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Lucas IT, Bazin D, Daudon M. Raman opportunities in the field of pathological calcifications. CR CHIM 2022. [DOI: 10.5802/crchim.110] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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14
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Bazin D, Papoular RJ, Elkaim E, Weil R, Thiaudière D, Pisapia C, Ménez B, Hwang NS, Tielens F, Livrozet M, Bouderlique E, Haymann JP, Letavernier E, Hennet L, Frochot V, Daudon M. Whitlockite structures in kidney stones indicate infectious origin: a scanning electron microscopy and Synchrotron Radiation investigation. CR CHIM 2022. [DOI: 10.5802/crchim.80] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Petay M, Cherfan M, Bouderlique E, Reguer S, Mathurin J, Dazzi A, L’Heronde M, Daudon M, Letavernier E, Deniset-Besseau A, Bazin D. Multiscale approach to provide a better physicochemical description of women breast microcalcifications. CR CHIM 2022. [DOI: 10.5802/crchim.210] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Gosling S, Calabrese D, Nallala J, Greenwood C, Pinder S, King L, Marks J, Pinto D, Lynch T, Lyburn ID, Hwang ES, Grand Challenge Precision Consortium, Rogers K, Stone N. A multi-modal exploration of heterogeneous physico-chemical properties of DCIS breast microcalcifications. Analyst 2022; 147:1641-1654. [PMID: 35311860 PMCID: PMC8997374 DOI: 10.1039/d1an01548f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Ductal carcinoma in situ (DCIS) is frequently associated with breast calcification. This study combines multiple analytical techniques to investigate the heterogeneity of these calcifications at the micrometre scale. X-ray diffraction, scanning electron microscopy and Raman and Fourier-transform infrared spectroscopy were used to determine the physicochemical and crystallographic properties of type II breast calcifications located in formalin fixed paraffin embedded DCIS breast tissue samples. Multiple calcium phosphate phases were identified across the calcifications, distributed in different patterns. Hydroxyapatite was the dominant mineral, with magnesium whitlockite found at the calcification edge. Amorphous calcium phosphate and octacalcium phosphate were also identified close to the calcification edge at the apparent mineral/matrix barrier. Crystallographic features of hydroxyapatite also varied across the calcifications, with higher crystallinity centrally, and highest carbonate substitution at the calcification edge. Protein was also differentially distributed across the calcification and the surrounding soft tissue, with collagen and β-pleated protein features present to differing extents. Combination of analytical techniques in this study was essential to understand the heterogeneity of breast calcifications and how this may link crystallographic and physicochemical properties of calcifications to the surrounding tissue microenvironment.
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Affiliation(s)
- Sarah Gosling
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK.
| | | | | | | | - Sarah Pinder
- Division of Cancer Studies, King's College London, Guy's Hospital, London, UK
| | - Lorraine King
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Jeffrey Marks
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | | | - Thomas Lynch
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Iain D Lyburn
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK. .,Thirlestaine Breast Centre, Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, Gloucestershire, UK.,Cobalt Medical Charity, Cheltenham, UK
| | - E Shelley Hwang
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | | | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK.
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
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17
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Miller TI, Flanagan MR, Lowry KP, Kilgore MR. Error Reduction and Diagnostic Concordance in Breast Pathology. Surg Pathol Clin 2022; 15:1-13. [PMID: 35236626 DOI: 10.1016/j.path.2021.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Errors in anatomic pathology can result in patients receiving inappropriate treatment and poor patient outcomes. Policies and procedures are necessary to decrease error and improve diagnostic concordance. Breast pathology may be more prone to diagnostic errors than other surgical pathology subspecialties due to inherit borderline diagnostic categories such as atypical ductal hyperplasia and low-grade ductal carcinoma in situ. Mandatory secondary review of internal and outside referral cases before treatment is effective in reducing diagnostic errors and improving concordance. Assessment of error through amendment/addendum tracking, implementing an incident reporting system, and multidisciplinary tumor boards can establish procedures to prevent future error.
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Affiliation(s)
- Timothy Isaac Miller
- Department of Laboratory Medicine and Pathology, University of Washington, University of Washington Medical Center, 1959 Northeast Pacific Street, Box 357100, Seattle, WA 98195, USA.
| | - Meghan R Flanagan
- Department of Surgery, University of Washington, 1100 Fairview Avenue, M4-B874, Seattle, WA 98109, USA
| | - Kathryn P Lowry
- Department of Radiology, University of Washington, Seattle Cancer Care Alliance, 1144 Eastlake Avenue East, LG-215, Seattle, WA 98109, USA
| | - Mark R Kilgore
- Department of Laboratory Medicine and Pathology, University of Washington, University of Washington Medical Center, 1959 Northeast Pacific Street, Box 357100, Seattle, WA 98195, USA
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18
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Zhao JJ, Zhang YF, Zhao TL, Li H, Yao QZ, Fu SQ, Zhou GT. Abiotic Formation of Calcium Oxalate under UV Irradiation and Implications for Biomarker Detection on Mars. ASTROBIOLOGY 2022; 22:35-48. [PMID: 35020413 DOI: 10.1089/ast.2020.2416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A major objective in the exploration of Mars is to test the hypothesis that the planet has ever hosted life. Biogenic compounds, especially biominerals, are believed to serve as biomarkers in Raman-assisted remote sensing missions. However, the prerequisite for the development of these minerals as biomarkers is the uniqueness of their biogenesis. Herein, tetragonal bipyramidal weddellite, a type of calcium oxalate, is successfully achieved by UV-photolyzing pyruvic acid (PA). The as-prepared products are identified and characterized by micro-Raman spectroscopy and field emission scanning electron microscopy. Persistent mineralization of weddellite is observed with altering key experimental parameters, including pH, Ca2+ and PA concentrations. In particular, the initial concentration of PA can significantly influence the morphology of weddellite crystal. Oxalate acid is commonly of biological origin; thus calcium oxalate is considered to be a biomarker. However, our results reveal that calcium oxalate can be harvested by a UV photolysis pathway. Moreover, prebiotic sources of organics (e.g., PA, glycine, alanine, and aspartic acid) have been proven to be available through abiotic pathways. Therefore, our results may provide a new abiotic pathway of calcium oxalate formation. Considering that calcium oxalate minerals have been taken as biosignatures for the origin and early evolution of life on Earth and astrobiological investigations, its formation and accumulation by the photolysis of abiological organic compounds should be taken into account.
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Affiliation(s)
- Jia-Jian Zhao
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, P.R. China
| | - Yi-Fan Zhang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, P.R. China
| | - Tian-Lei Zhao
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, P.R. China
| | - Han Li
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, P.R. China
| | - Qi-Zhi Yao
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, P.R. China
| | - Sheng-Quan Fu
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, P.R. China
| | - Gen-Tao Zhou
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, P.R. China
- CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, P.R. China
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19
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Bouzy P, O'Grady S, Madupalli H, Tecklenburg M, Rogers K, Palombo F, Morgan MP, Stone N. A time-course Raman spectroscopic analysis of spontaneous in vitro microcalcifications in a breast cancer cell line. J Transl Med 2021; 101:1267-1280. [PMID: 34117364 PMCID: PMC8367820 DOI: 10.1038/s41374-021-00619-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/17/2021] [Accepted: 05/17/2021] [Indexed: 01/05/2023] Open
Abstract
Microcalcifications are early markers of breast cancer and can provide valuable prognostic information to support clinical decision-making. Current detection of calcifications in breast tissue is based on X-ray mammography, which involves the use of ionizing radiation with potentially detrimental effects, or MRI scans, which have limited spatial resolution. Additionally, these techniques are not capable of discriminating between microcalcifications from benign and malignant lesions. Several studies show that vibrational spectroscopic techniques are capable of discriminating and classifying breast lesions, with a pathology grade based on the chemical composition of the microcalcifications. However, the occurrence of microcalcifications in the breast and the underlying mineralization process are still not fully understood. Using a previously established model of in vitro mineralization, the MDA-MB-231 human breast cancer cell line was induced using two osteogenic agents, inorganic phosphate (Pi) and β-glycerophosphate (βG), and direct monitoring of the mineralization process was conducted using Raman micro-spectroscopy. MDA-MB-231 cells cultured in a medium supplemented with Pi presented more rapid mineralization (by day 3) than cells exposed to βG (by day 11). A redshift of the phosphate stretching peak for cells supplemented with βG revealed the presence of different precursor phases (octacalcium phosphate) during apatite crystal formation. These results demonstrate that Raman micro-spectroscopy is a powerful tool for nondestructive analysis of mineral species and can provide valuable information for evaluating mineralization dynamics and any associated breast cancer progression, if utilized in pathological samples.
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Affiliation(s)
- Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, UK
| | - Shane O'Grady
- School of Pharmacy and Biomolecular Science, Royal College of Surgeons in Ireland, Dublin, 2, Ireland
| | - Honey Madupalli
- Department of Chemistry and Biochemistry and Science of Advanced Materials Program, Central Michigan University, Mt. Pleasant, MI, USA
| | - Mary Tecklenburg
- Department of Chemistry and Biochemistry and Science of Advanced Materials Program, Central Michigan University, Mt. Pleasant, MI, USA
| | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | | | - Maria P Morgan
- School of Pharmacy and Biomolecular Science, Royal College of Surgeons in Ireland, Dublin, 2, Ireland
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
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20
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X-ray fan beam coded aperture transmission and diffraction imaging for fast material analysis. Sci Rep 2021; 11:10585. [PMID: 34012075 PMCID: PMC8134570 DOI: 10.1038/s41598-021-90163-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/26/2021] [Indexed: 02/03/2023] Open
Abstract
X-ray transmission imaging has been used in a variety of applications for high-resolution measurements based on shape and density. Similarly, X-ray diffraction (XRD) imaging has been used widely for molecular structure-based identification of materials. Combining these X-ray methods has the potential to provide high-resolution material identification, exceeding the capabilities of either modality alone. However, XRD imaging methods have been limited in application by their long measurement times and poor spatial resolution, which has generally precluded combined, rapid measurements of X-ray transmission and diffraction. In this work, we present a novel X-ray fan beam coded aperture transmission and diffraction imaging system, developed using commercially available components, for rapid and accurate non-destructive imaging of industrial and biomedical specimens. The imaging system uses a 160 kV Bremsstrahlung X-ray source while achieving a spatial resolution of ≈ 1 × 1 mm2 and a spectral accuracy of > 95% with only 15 s exposures per 150 mm fan beam slice. Applications of this technology are reported in geological imaging, pharmaceutical inspection, and medical diagnosis. The performance of the imaging system indicates improved material differentiation relative to transmission imaging alone at scan times suitable for a variety of industrial and biomedical applications.
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21
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Magnesium whitlockite - omnipresent in pathological mineralisation of soft tissues but not a significant inorganic constituent of bone. Acta Biomater 2021; 125:72-82. [PMID: 33610767 DOI: 10.1016/j.actbio.2021.02.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/26/2021] [Accepted: 02/12/2021] [Indexed: 01/03/2023]
Abstract
Whitlockite is a calcium phosphate that was first identified in minerals collected from the Palermo Quarry, New Hampshire. The terms magnesium whitlockite [Mg-whitlockite; Ca18Mg2(HPO4)2(PO4)12] and beta-tricalcium phosphate [β-TCP; β-Ca3(PO4)2] are often used interchangeably since Mg-whitlockite is not easily distinguished from β-Ca3(PO4)2 by powder X-ray diffraction although their crystalline structures differ significantly. Being both osteoconductive and bioresorbable, Mg-whitlockite is pursued as a synthetic bone graft substitute. In recent years, advances in development of synthetic Mg-whitlockite have been accompanied by claims that Mg-whitlockite is the second most abundant inorganic constituent of bone, occupying as much as 20-35 wt% of the inorganic fraction. To find evidence in support of this notion, this review presents an exhaustive summary of Mg-whitlockite identification in biological tissues. Mg-whitlockite is mainly found in association with pathological mineralisation of various soft tissues and dental calculus, and occasionally with enamel and dentine. With the exception of high-temperature treated tumoural calcified deposits around interphalangeal and metacarpal joints and rhomboidal Mg-whitlockite crystals in post-apoptotic osteocyte lacunae in human alveolar bone, this unusual mineral has never been detected in the extracellular matrix of mammalian bone. Characterisation techniques capable of unequivocally distinguishing between different calcium phosphate phases, such as high-resolution imaging, crystallography, and/or spectroscopy have exclusively identified bone mineral as poorly crystalline, ion-substituted, carbonated apatite. The idea that Mg-whitlockite is a significant constituent of bone mineral remains unsubstantiated. Contrary to claims that such biomaterials represent a bioinspired/biomimetic approach to bone repair, Mg-whitlockite remains, exclusively, a pathological biomineral. STATEMENT OF SIGNIFICANCE: Magnesium whitlockite (Mg-whitlockite) is a unique calcium phosphate that typically features in pathological calcification of soft tissues; however, an alarming trend emerging in the synthetic bioceramics community claims that Mg-whitlockite occupies 20-35 wt% of bone mineral and therefore synthetic Mg-whitlockite represents a biomimetic approach towards bone regeneration. By providing an overview of Mg-whitlockite detection in biological tissues and scrutinising a diverse cross-section of literature relevant to bone composition analysis, this review concludes that Mg-whitlockite is exclusively a pathological biomineral, and having never been reported in bone extracellular matrix, Mg-whitlockite does not constitute a biomimetic strategy for bone repair.
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22
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Vidavsky N, Kunitake JAMR, Estroff LA. Multiple Pathways for Pathological Calcification in the Human Body. Adv Healthc Mater 2021; 10:e2001271. [PMID: 33274854 PMCID: PMC8724004 DOI: 10.1002/adhm.202001271] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/16/2020] [Indexed: 12/12/2022]
Abstract
Biomineralization of skeletal components (e.g., bone and teeth) is generally accepted to occur under strict cellular regulation, leading to mineral-organic composites with hierarchical structures and properties optimized for their designated function. Such cellular regulation includes promoting mineralization at desired sites as well as inhibiting mineralization in soft tissues and other undesirable locations. In contrast, pathological mineralization, with potentially harmful health effects, can occur as a result of tissue or metabolic abnormalities, disease, or implantation of certain biomaterials. This progress report defines mineralization pathway components and identifies the commonalities (and differences) between physiological (e.g., bone remodeling) and pathological calcification formation pathways, based, in part, upon the extent of cellular control within the system. These concepts are discussed in representative examples of calcium phosphate-based pathological mineralization in cancer (breast, thyroid, ovarian, and meningioma) and in cardiovascular disease. In-depth mechanistic understanding of pathological mineralization requires utilizing state-of-the-art materials science imaging and characterization techniques, focusing not only on the final deposits, but also on the earlier stages of crystal nucleation, growth, and aggregation. Such mechanistic understanding will further enable the use of pathological calcifications in diagnosis and prognosis, as well as possibly provide insights into preventative treatments for detrimental mineralization in disease.
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Affiliation(s)
- Netta Vidavsky
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Jennie A M R Kunitake
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Lara A Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY, 14853, USA
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23
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Martins ML, Pinto TS, Gomes AM, Parra JPRLL, Franchi GC, Zambuzzi WF, Rodrigues CG. Immobilization of Paclitaxel on Hydroxyapatite for Breast Cancer Investigations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8723-8732. [PMID: 32643936 DOI: 10.1021/acs.langmuir.0c00868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A simple method for immobilization of the chemotherapy drug paclitaxel (PTX) on hydroxyapatite nanoparticles (n-HAP) using the biopolymer chitosan as a trapping agent is described focusing on applications involving breast cancer cells. n-HAP with two distinct crystallinity profiles were used: with predominant crystallization along the long axis and with a more homogeneous crystallization in all directions. In the first scenario, the interactions between chitosan and both the OH and PO43- groups on the surface of the nanoparticles are favored and lead to a more efficient attachment of the drug. In this case, PTX is found to remain mostly attached to the n-HAP for at least 24 h, while being dispersed in aqueous solution. During this time, the activity of the drug is inhibited as corroborated by in vitro assays with breast cancer cells. With that, the in vitro experiments revealed distinct effects from the drug-loaded nanoparticles on the cells depending on the experimental conditions. In a short term, that is, in 24 h, the cells exhibit higher viability than those challenged with nonloaded materials. Nevertheless, after 72 h, even a small content of PTX in the presence of n-HAP can reduce the cells' viability via stimulation of the apoptotic phenotype and suppression of survival stimuli.
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Affiliation(s)
- Murillo L Martins
- Post-Graduation Program in Industrial and Systems Engineering, Pontifical Catholic University of Goiás, Goiânia 74175-120, Goiás, Brazil
| | - Thais S Pinto
- Laboratory of Bioassays and Cellular Dynamics (LaBIO), Chemistry and Biochemistry Department, Bioscience Institute of Botucatu (IBB), State University of São Paulo (UNESP), Botucatu 18618-000, São Paulo, Brazil
| | - Anderson M Gomes
- Laboratory of Bioassays and Cellular Dynamics (LaBIO), Chemistry and Biochemistry Department, Bioscience Institute of Botucatu (IBB), State University of São Paulo (UNESP), Botucatu 18618-000, São Paulo, Brazil
| | - João P R L L Parra
- Laboratory of Bioassays and Cellular Dynamics (LaBIO), Chemistry and Biochemistry Department, Bioscience Institute of Botucatu (IBB), State University of São Paulo (UNESP), Botucatu 18618-000, São Paulo, Brazil
| | - Gilberto C Franchi
- Onco-Hematological Child Research Center (CIPOI), Faculty of Medical Sciences, University of Campinas-UNICAMP, Campinas 13083-970, São Paulo, Brazil
| | - Willian F Zambuzzi
- Laboratory of Bioassays and Cellular Dynamics (LaBIO), Chemistry and Biochemistry Department, Bioscience Institute of Botucatu (IBB), State University of São Paulo (UNESP), Botucatu 18618-000, São Paulo, Brazil
| | - Cloves G Rodrigues
- Post-Graduation Program in Industrial and Systems Engineering, Pontifical Catholic University of Goiás, Goiânia 74175-120, Goiás, Brazil
- School of Exact Sciences and Computing, Pontifical Catholic University of Goiás, Goiânia 74175-120, Goiás, Brazil
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24
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Tabish TA, Dey P, Mosca S, Salimi M, Palombo F, Matousek P, Stone N. Smart Gold Nanostructures for Light Mediated Cancer Theranostics: Combining Optical Diagnostics with Photothermal Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1903441. [PMID: 32775148 PMCID: PMC7404179 DOI: 10.1002/advs.201903441] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 03/24/2020] [Indexed: 05/13/2023]
Abstract
Nanotheranostics, which combines optical multiplexed disease detection with therapeutic monitoring in a single modality, has the potential to propel the field of nanomedicine toward genuine personalized medicine. Currently employed mainstream modalities using gold nanoparticles (AuNPs) in diagnosis and treatment are limited by a lack of specificity and potential issues associated with systemic toxicity. Light-mediated nanotheranostics offers a relatively non-invasive alternative for cancer diagnosis and treatment by using AuNPs of specific shapes and sizes that absorb near infrared (NIR) light, inducing plasmon resonance for enhanced tumor detection and generating localized heat for tumor ablation. Over the last decade, significant progress has been made in the field of nanotheranostics, however the main biological and translational barriers to nanotheranostics leading to a new paradigm in anti-cancer nanomedicine stem from the molecular complexities of cancer and an incomplete mechanistic understanding of utilization of Au-NPs in living systems. This work provides a comprehensive overview on the biological, physical and translational barriers facing the development of nanotheranostics. It will also summarise the recent advances in engineering specific AuNPs, their unique characteristics and, importantly, tunability to achieve the desired optical/photothermal properties.
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Affiliation(s)
| | - Priyanka Dey
- School of Physics and AstronomyUniversity of ExeterExeterEX4 4QLUK
| | - Sara Mosca
- Central Laser FacilitySTFC Rutherford Appleton LaboratoryOxfordOX11 0QXUK
| | - Marzieh Salimi
- School of Physics and AstronomyUniversity of ExeterExeterEX4 4QLUK
| | | | - Pavel Matousek
- Central Laser FacilitySTFC Rutherford Appleton LaboratoryOxfordOX11 0QXUK
| | - Nicholas Stone
- School of Physics and AstronomyUniversity of ExeterExeterEX4 4QLUK
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25
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Shin KS, Laohajaratsang M, Men S, Figueroa B, Dintzis SM, Fu D. Quantitative chemical imaging of breast calcifications in association with neoplastic processes. Am J Cancer Res 2020; 10:5865-5878. [PMID: 32483424 PMCID: PMC7254998 DOI: 10.7150/thno.43325] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 04/09/2020] [Indexed: 12/21/2022] Open
Abstract
Calcifications play an essential role in early breast cancer detection and diagnosis. However, information regarding the chemical composition of calcifications identified on mammography and histology is limited. Detailed spectroscopy reveals an association between the chemical composition of calcifications and breast cancer, warranting the development of novel analytical tools to better define calcification types. Previous investigations average calcification composition across broad tissue sections with no spatially resolved information or provide qualitative visualization, which prevents a robust linking of specific spatially resolved changes in calcification chemistry with the pathologic process. Method: To visualize breast calcification chemical composition at high spatial resolution, we apply hyperspectral stimulated Raman scattering (SRS) microscopy to study breast calcifications associated with a spectrum of breast changes ranging from benign to neoplastic processes, including atypical ductal hyperplasia, ductal carcinoma in situ, and invasive ductal carcinoma. The carbonate content of individual breast calcifications is quantified using a simple ratiometric analysis. Results: Our findings reveal that intra-sample calcification carbonate content is closely associated with local pathological processes. Single calcification analysis supports previous studies demonstrating decreasing average carbonate level with increasing malignant potential. Sensitivity and specificity reach >85% when carbonate content level is used as the single differentiator in separating benign from neoplastic processes. However, the average carbonate content is limiting when trying to separate specific diagnostic categories, such as fibroadenoma and invasive ductal carcinoma. Second harmonic generation (SHG) data can provide critical information to bridge this gap. Conclusion: SRS, combined with SHG, can be a valuable tool in better understanding calcifications in carcinogenesis, diagnosis, and possible prognosis. This study not only reveals previously unknown large variations of breast microcalcifications in association with local malignancy but also corroborates the clinical value of linking microcalcification chemistry to breast malignancy. More importantly, it represents an important step in the development of a label-free imaging strategy for breast cancer diagnosis with tremendous potential to address major challenges in diagnostic discordance in pathology.
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Vanna R, Morasso C, Marcinnò B, Piccotti F, Torti E, Altamura D, Albasini S, Agozzino M, Villani L, Sorrentino L, Bunk O, Leporati F, Giannini C, Corsi F. Raman Spectroscopy Reveals That Biochemical Composition of Breast Microcalcifications Correlates with Histopathologic Features. Cancer Res 2020; 80:1762-1772. [PMID: 32094303 DOI: 10.1158/0008-5472.can-19-3204] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 12/28/2019] [Accepted: 02/21/2020] [Indexed: 11/16/2022]
Abstract
Breast microcalcifications are a common mammographic finding. Microcalcifications are considered suspicious signs of breast cancer and a breast biopsy is required, however, cancer is diagnosed in only a few patients. Reducing unnecessary biopsies and rapid characterization of breast microcalcifications are unmet clinical needs. In this study, 473 microcalcifications detected on breast biopsy specimens from 56 patients were characterized entirely by Raman mapping and confirmed by X-ray scattering. Microcalcifications from malignant samples were generally more homogeneous, more crystalline, and characterized by a less substituted crystal lattice compared with benign samples. There were significant differences in Raman features corresponding to the phosphate and carbonate bands between the benign and malignant groups. In addition to the heterogeneous composition, the presence of whitlockite specifically emerged as marker of benignity in benign microcalcifications. The whole Raman signature of each microcalcification was then used to build a classification model that distinguishes microcalcifications according to their overall biochemical composition. After validation, microcalcifications found in benign and malignant samples were correctly recognized with 93.5% sensitivity and 80.6% specificity. Finally, microcalcifications identified in malignant biopsies, but located outside the lesion, reported malignant features in 65% of in situ and 98% of invasive cancer cases, respectively, suggesting that the local microenvironment influences microcalcification features. This study confirms that the composition and structural features of microcalcifications correlate with breast pathology and indicates new diagnostic potentialities based on microcalcifications assessment. SIGNIFICANCE: Raman spectroscopy could be a quick and accurate diagnostic tool to precisely characterize and distinguish benign from malignant breast microcalcifications detected on mammography.
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Affiliation(s)
- Renzo Vanna
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Carlo Morasso
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Beatrice Marcinnò
- Custom Computing and Processing Systems Laboratory, Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
| | - Francesca Piccotti
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Emanuele Torti
- Custom Computing and Processing Systems Laboratory, Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
| | - Davide Altamura
- Institute of Crystallography, National Research Council, Bari, Italy
| | - Sara Albasini
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Manuela Agozzino
- Pathology Unit, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Laura Villani
- Pathology Unit, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
| | - Luca Sorrentino
- Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
| | - Oliver Bunk
- Paul Scherrer Institut, Villigen, Switzerland
| | - Francesco Leporati
- Custom Computing and Processing Systems Laboratory, Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
| | - Cinzia Giannini
- Institute of Crystallography, National Research Council, Bari, Italy
| | - Fabio Corsi
- Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy. .,Breast Unit, Department of Surgery, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
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27
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He F, Springer NL, Whitman MA, Pathi SP, Lee Y, Mohanan S, Marcott S, Chiou AE, Blank BS, Iyengar N, Morris PG, Jochelson M, Hudis CA, Shah P, Kunitake JAMR, Estroff LA, Lammerding J, Fischbach C. Hydroxyapatite mineral enhances malignant potential in a tissue-engineered model of ductal carcinoma in situ (DCIS). Biomaterials 2019; 224:119489. [PMID: 31546097 PMCID: PMC6878891 DOI: 10.1016/j.biomaterials.2019.119489] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 09/06/2019] [Accepted: 09/11/2019] [Indexed: 01/21/2023]
Abstract
While ductal carcinoma in situ (DCIS) is known as a precursor lesion to most invasive breast carcinomas, the mechanisms underlying this transition remain enigmatic. DCIS is typically diagnosed by the mammographic detection of microcalcifications (MC). MCs consisting of non-stoichiometric hydroxyapatite (HA) mineral are frequently associated with malignant disease, yet it is unclear whether HA can actively promote malignancy. To investigate this outstanding question, we compared phenotypic outcomes of breast cancer cells cultured in control or HA-containing poly(lactide-co-glycolide) (PLG) scaffolds. Exposure to HA mineral in scaffolds increased the expression of pro-tumorigenic interleukin-8 (IL-8) among transformed but not benign cells. Notably, MCF10DCIS.com cells cultured in HA scaffolds adopted morphological changes associated with increased invasiveness and exhibited increased motility that were dependent on IL-8 signaling. Moreover, MCF10DCIS.com xenografts in HA scaffolds displayed evidence of enhanced malignant progression relative to xenografts in control scaffolds. These experimental findings were supported by a pathological analysis of clinical DCIS specimens, which correlated the presence of MCs with increased IL-8 staining and ductal proliferation. Collectively, our work suggests that HA mineral may stimulate malignancy in preinvasive DCIS cells and validate PLG scaffolds as useful tools to study cell-mineral interactions.
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Affiliation(s)
- Frank He
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Nora L Springer
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA; Department of Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, KS, 66506, USA
| | - Matthew A Whitman
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Siddharth P Pathi
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Yeonkyung Lee
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Sunish Mohanan
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY, 14853, USA
| | - Stephen Marcott
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Aaron E Chiou
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Bryant S Blank
- Cornell Center for Animal Resources and Education, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Neil Iyengar
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY, 10065, USA
| | - Patrick G Morris
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY, 10065, USA
| | - Maxine Jochelson
- Department of Radiology, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY, 10065, USA
| | - Clifford A Hudis
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY, 10065, USA
| | - Pragya Shah
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA; Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Jennie A M R Kunitake
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Lara A Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, 14853, USA
| | - Jan Lammerding
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA; Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Claudia Fischbach
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, 14853, USA.
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28
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Gosling S, Scott R, Greenwood C, Bouzy P, Nallala J, Lyburn ID, Stone N, Rogers K. Calcification Microstructure Reflects Breast Tissue Microenvironment. J Mammary Gland Biol Neoplasia 2019; 24:333-342. [PMID: 31807966 PMCID: PMC6908550 DOI: 10.1007/s10911-019-09441-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/27/2019] [Indexed: 10/27/2022] Open
Abstract
Microcalcifications are important diagnostic indicators of disease in breast tissue. Tissue microenvironments differ in many aspects between normal and cancerous cells, notably extracellular pH and glycolytic respiration. Hydroxyapatite microcalcification microstructure is also found to differ between tissue pathologies, including differential ion substitutions and the presence of additional crystallographic phases. Distinguishing between tissue pathologies at an early stage is essential to improve patient experience and diagnostic accuracy, leading to better disease outcome. This study explores the hypothesis that microenvironment features may become immortalised within calcification crystallite characteristics thus becoming indicators of tissue pathology. In total, 55 breast calcifications incorporating 3 tissue pathologies (benign - B2, ductal carcinoma in-situ - B5a and invasive malignancy - B5b) from archive formalin-fixed paraffin-embedded core needle breast biopsies were analysed using X-ray diffraction. Crystallite size and strain were determined from 548 diffractograms using Williamson-Hall analysis. There was an increased crystallinity of hydroxyapatite with tissue malignancy compared to benign tissue. Coherence length was significantly correlated with pathology grade in all basis crystallographic directions (P < 0.01), with a greater difference between benign and in situ disease compared to in-situ disease and invasive malignancy. Crystallite size and non-uniform strain contributed to peak broadening in all three pathologies. Furthermore, crystallite size and non-uniform strain normal to the basal planes increased significantly with malignancy (P < 0.05). Our findings support the view that tissue microenvironments can influence differing formation mechanisms of hydroxyapatite through acidic precursors, leading to differential substitution of carbonate into the hydroxide and phosphate sites, causing significant changes in crystallite size and non-uniform strain.
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Affiliation(s)
- Sarah Gosling
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK.
| | - Robert Scott
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | - Charlene Greenwood
- School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, UK
| | - Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, UK
| | | | - Iain D Lyburn
- Thirlestaine Breast Centre, Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, Gloucestershire, UK
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK
| | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
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29
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Pathological Mineralization: The Potential of Mineralomics. MATERIALS 2019; 12:ma12193126. [PMID: 31557841 PMCID: PMC6804219 DOI: 10.3390/ma12193126] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/11/2019] [Accepted: 09/19/2019] [Indexed: 12/11/2022]
Abstract
Pathological mineralization has been reported countless times in the literature and is a well-known phenomenon in the medical field for its connections to a wide range of diseases, including cancer, cardiovascular, and neurodegenerative diseases. The minerals involved in calcification, however, have not been directly studied as extensively as the organic components of each of the pathologies. These have been studied in isolation and, for most of them, physicochemical properties are hitherto not fully known. In a parallel development, materials science methods such as electron microscopy, spectroscopy, thermal analysis, and others have been used in biology mainly for the study of hard tissues and biomaterials and have only recently been incorporated in the study of other biological systems. This review connects a range of soft tissue diseases, including breast cancer, age-related macular degeneration, aortic valve stenosis, kidney stone diseases, and Fahr’s syndrome, all of which have been associated with mineralization processes. Furthermore, it describes how physicochemical material characterization methods have been used to provide new information on such pathologies. Here, we focus on diseases that are associated with calcium-composed minerals to discuss how understanding the properties of these minerals can provide new insights on their origins, considering that different conditions and biological features are required for each type of mineral to be formed. We show that mineralomics, or the study of the properties and roles of minerals, can provide information which will help to improve prevention methods against pathological mineral build-up, which in the cases of most of the diseases mentioned in this review, will ultimately lead to new prevention or treatment methods for the diseases. Importantly, this review aims to highlight that chemical composition alone cannot fully support conclusions drawn on the nature of these minerals.
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30
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Gardner B, Matousek P, Stone N. Subsurface Chemically Specific Measurement of pH Levels in Biological Tissues Using Combined Surface-Enhanced and Deep Raman. Anal Chem 2019; 91:10984-10987. [PMID: 31322859 PMCID: PMC7006966 DOI: 10.1021/acs.analchem.9b01015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
![]()
There
is much interest in using nanosensors to monitor biologically
relevant species such as glucose, or cellular pH, as these often become
dysregulated in diseases such as cancer. This information is often
inaccessible at depth in biological tissue, due to the highly scattering
nature of tissue. Here we show that gold nanoparticles labeled with
pH-sensitive reporter molecules can monitor pH at depth in biological
tissues. This was achieved using deep Raman spectroscopy (spatially
offset Raman and transmission Raman) in combination with surface-enhanced
Raman spectroscopy, allowing chemical information to be retrieved
significantly deeper than conventional Raman spectroscopy permits.
Combining these approaches with chemometrics enabled pH changes to
be monitored with an error of ±∼0.1 pH units noninvasively
through 22 mm of soft tissue. This development opens the opportunity
for the next generation of light-based medical diagnostic methods,
such as monitoring of cancers, known to significantly alter pH levels.
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Affiliation(s)
- Benjamin Gardner
- Biomedical Physics, School of Physics and Astronomy, College of Engineering, Mathematics and Physical Sciences , University of Exeter , Exeter , EX4 4QL , United Kingdom
| | - Pavel Matousek
- Central Laser Facility, Research Complex at Harwell , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , United Kingdom
| | - Nicholas Stone
- Biomedical Physics, School of Physics and Astronomy, College of Engineering, Mathematics and Physical Sciences , University of Exeter , Exeter , EX4 4QL , United Kingdom
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31
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Giannini C, Ladisa M, Lutz-Bueno V, Terzi A, Ramella M, Fusaro L, Altamura D, Siliqi D, Sibillano T, Diaz A, Boccafoschi F, Bunk O. X-ray scanning microscopies of microcalcifications in abdominal aortic and popliteal artery aneurysms. IUCRJ 2019; 6:267-276. [PMID: 30867924 PMCID: PMC6400185 DOI: 10.1107/s2052252519001544] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 01/28/2019] [Indexed: 05/27/2023]
Abstract
Abdominal aortic and popliteal artery aneurysms are vascular diseases which show massive degeneration, weakening of the vascular wall and loss of the vascular tissue functionality. They are driven by inflammatory, hemodynamical factors and biological alterations that may lead, in the case of an abdominal aortic aneurysm, to sudden and dangerous ruptures of the arteries. Here, human aortic and popliteal aneurysm tissues were obtained during surgical repair, and studied by synchrotron radiation X-ray scanning microdiffraction and small-angle scattering, to investigate the microcalcifications present in the tissues. Data collected during the experiments were transformed into quantitative microscopy images through the combination of statistical approaches and crystallographic methods. As a result of this multi-step analysis, microcalcifications, which are markers of the pathology, were classified in terms of chemical and structural content. This analysis helped to identify the presence of nanocrystalline hy-droxy-apatite and microcrystalline cholesterol, embedded in myofilament, and elastin-containing tissue with low collagen content in predominantly nanocrystalline areas. The generality of the approach allows it to be transferred to other types of tissue and other pathologies affected by microcalcifications, such as thyroid carcinoma, breast cancer, testicular microli-thia-sis or glioblastoma.
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Affiliation(s)
- C. Giannini
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
| | - M. Ladisa
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
| | - V. Lutz-Bueno
- Paul Scherrer Institut, Forschungsstrasse 111, Villigen PSI, 5232, Switzerland
| | - A. Terzi
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
| | - M. Ramella
- Department of Health Sciences, University of Piemonte Orientale, Via Solaroli 17, Novara, 28100, Italy
| | - L. Fusaro
- Department of Health Sciences, University of Piemonte Orientale, Via Solaroli 17, Novara, 28100, Italy
| | - D. Altamura
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
| | - D. Siliqi
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
| | - T. Sibillano
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
| | - A. Diaz
- Paul Scherrer Institut, Forschungsstrasse 111, Villigen PSI, 5232, Switzerland
| | - F. Boccafoschi
- Institute of Crystallography, National Research Council, via Amendola 122/O, Bari, Bari 70125, Italy
- Department of Health Sciences, University of Piemonte Orientale, Via Solaroli 17, Novara, 28100, Italy
| | - O. Bunk
- Paul Scherrer Institut, Forschungsstrasse 111, Villigen PSI, 5232, Switzerland
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32
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Studying biomineralization pathways in a 3D culture model of breast cancer microcalcifications. Biomaterials 2018; 179:71-82. [PMID: 29980076 DOI: 10.1016/j.biomaterials.2018.06.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/18/2018] [Accepted: 06/20/2018] [Indexed: 12/15/2022]
Abstract
Microcalcifications serve as diagnostic markers for breast cancer, yet their formation pathway(s) and role in cancer progression are debated due in part to a lack of relevant 3D culture models that allow studying the extent of cellular regulation over mineralization. Previous studies have suggested processes ranging from dystrophic mineralization associated with cell death to bone-like mineral deposition. Here, we evaluated microcalcification formation in 3D multicellular spheroids, generated from non-malignant, pre-cancer, and invasive cell lines from the MCF10A human breast tumor progression series. The spheroids with greater malignancy potential developed necrotic cores, thus recapitulating spatially distinct viable and non-viable areas known to regulate cellular behavior in tumors in vivo. The spatial distribution of the microcalcifications, as well as their compositions, were characterized using nanoCT, electron-microscopy, and X-ray spectroscopy. Apatite microcalcifications were primarily detected within the viable cell regions and their number and size increased with malignancy potential of the spheroids. Levels of alkaline phosphatase decreased with malignancy potential, whereas levels of osteopontin increased. These findings support a mineralization pathway in which cancer cells induce mineralization in a manner that is linked to their malignancy potential, but that is distinct from physiological osteogenic mineralization.
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33
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O'Grady S, Morgan MP. Microcalcifications in breast cancer: From pathophysiology to diagnosis and prognosis. Biochim Biophys Acta Rev Cancer 2018; 1869:310-320. [PMID: 29684522 DOI: 10.1016/j.bbcan.2018.04.006] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/18/2018] [Accepted: 04/18/2018] [Indexed: 01/29/2023]
Abstract
The implementation of mammographic screening programmes in many countries has been linked to a marked increase in early detection and improved prognosis for breast cancer patients. Breast tumours can be detected by assessing several features in mammographic images but one of the most common are the presence of small deposits of calcium known as microcalcifications, which in many cases may be the only detectable sign of a breast tumour. In addition to their efficacy in the detection of breast cancer, the presence of microcalcifications within a breast tumour may also convey useful prognostic information. Breast tumours with associated calcifications display an increased rate of HER2 overexpression as well as decreased survival, increased risk of recurrence, high tumour grade and increased likelihood of spread to the lymph nodes. Clearly, the presence of microcalcifications in a tumour is a clinically significant finding, suggesting that a detailed understanding of their formation may improve our knowledge of the early stages of breast tumourigenesis, yet there are no reports which attempt to bring together recent basic science research findings and current knowledge of the clinical significance of microcalcifications. This review will summarise the most current understanding of the formation of calcifications within breast tissue and explore their associated clinical features and prognostic value.
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Affiliation(s)
- S O'Grady
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland
| | - M P Morgan
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
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34
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Richards JM, Kunitake JA, Hunt HB, Wnorowski AN, Lin DW, Boskey AL, Donnelly E, Estroff LA, Butcher JT. Crystallinity of hydroxyapatite drives myofibroblastic activation and calcification in aortic valves. Acta Biomater 2018; 71:24-36. [PMID: 29505892 DOI: 10.1016/j.actbio.2018.02.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 02/15/2018] [Accepted: 02/22/2018] [Indexed: 12/30/2022]
Abstract
Calcific aortic valve disease (CAVD) is an inexorably degenerative pathology characterized by progressive calcific lesion formation on the valve leaflets. The interaction of valvular cells in advanced lesion environments is not well understood yet highly relevant as clinically detectable CAVD exhibits calcifications composed of non-stoichiometric hydroxyapatite (HA). In this study, Fourier transform infrared spectroscopic imaging was used to spatially analyze mineral properties as a function of disease progression. Crystallinity (size and perfection) increased with increased valve calcification. To study the relationship between crystallinity and cellular behavior in CAVD, valve cells were seeded into 3D mineral-rich collagen gels containing synthetic HA particles, which had varying crystallinities. Lower crystallinity HA drove myofibroblastic activation in both valve interstitial and endothelial cells, as well as osteoblastic differentiation in interstitial cells. Additionally, calcium accumulation within gels depended on crystallinity, and apoptosis was insufficient to explain differences in HA-driven cellular activity. The protective nature of endothelial cells against interstitial cell activation and calcium accumulation was completely inhibited in the presence of less crystalline HA particles. Elucidating valve cellular behavior post-calcification is of vital importance to better predict and treat clinical pathogenesis, and mineral-containing hydrogel models provide a unique 3D platform to evaluate valve cell responses to a later stage of valve disease. STATEMENT OF SIGNIFICANCE We implement a 3D in vitro platform with embedded hydroxyapatite (HA) nanoparticles to investigate the interaction between valve interstitial cells, valve endothelial cells, and a mineral-rich extracellular environment. HA nanoparticles were synthesized based on analysis of the mineral properties of calcific regions of diseased human aortic valves. Our findings indicate that crystallinity of HA drives activation and differentiation in interstitial and endothelial cells. We also show that a mineralized environment blocks endothelial protection against interstitial cell calcification. Our HA-containing hydrogel model provides a unique 3D platform to evaluate valve cell responses to a mineralized ECM. This study additionally lays the groundwork to capture the diversity of mineral properties in calcified valves, and link these properties to progression of the disease.
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35
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Kunitake JAMR, Choi S, Nguyen KX, Lee MM, He F, Sudilovsky D, Morris PG, Jochelson MS, Hudis CA, Muller DA, Fratzl P, Fischbach C, Masic A, Estroff LA. Correlative imaging reveals physiochemical heterogeneity of microcalcifications in human breast carcinomas. J Struct Biol 2018; 202:25-34. [PMID: 29221896 PMCID: PMC5835408 DOI: 10.1016/j.jsb.2017.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 12/02/2017] [Indexed: 02/02/2023]
Abstract
Microcalcifications (MCs) are routinely used to detect breast cancer in mammography. Little is known, however, about their materials properties and associated organic matrix, or their correlation to breast cancer prognosis. We combine histopathology, Raman microscopy, and electron microscopy to image MCs within snap-frozen human breast tissue and generate micron-scale resolution correlative maps of crystalline phase, trace metals, particle morphology, and organic matrix chemical signatures within high grade ductal carcinoma in situ (DCIS) and invasive cancer. We reveal the heterogeneity of mineral-matrix pairings, including punctate apatitic particles (<2 µm) with associated trace elements (e.g., F, Na, and unexpectedly Al) distributed within the necrotic cores of DCIS, and both apatite and spheroidal whitlockite particles in invasive cancer within a matrix containing spectroscopic signatures of collagen, non-collagen proteins, cholesterol, carotenoids, and DNA. Among the three DCIS samples, we identify key similarities in MC morphology and distribution, supporting a dystrophic mineralization pathway. This multimodal methodology lays the groundwork for establishing MC heterogeneity in the context of breast cancer biology, and could dramatically improve current prognostic models.
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Affiliation(s)
- Jennie A M R Kunitake
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Siyoung Choi
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Kayla X Nguyen
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA
| | - Meredith M Lee
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Frank He
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Daniel Sudilovsky
- Department of Pathology and Laboratory Medicine, Cayuga Medical Center at Ithaca, Ithaca, NY 14850, USA; Department of Pathology, Upstate Medical University, SUNY, Binghamton, NY 13904, USA
| | - Patrick G Morris
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
| | - Maxine S Jochelson
- Department of Radiology, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
| | - Clifford A Hudis
- Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center/Evelyn H. Lauder Breast and Imaging Center, New York, NY 10065, USA
| | - David A Muller
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, USA
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Research Campus Potsdam-Golm, 14424 Potsdam, Germany
| | - Claudia Fischbach
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, USA.
| | - Admir Masic
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Lara A Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, USA.
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Correlation of X-ray diffraction signatures of breast tissue and their histopathological classification. Sci Rep 2017; 7:12998. [PMID: 29021531 PMCID: PMC5636903 DOI: 10.1038/s41598-017-13399-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 09/25/2017] [Indexed: 12/05/2022] Open
Abstract
This pilot study examines the correlation of X-ray diffraction (XRD) measurements with the histopathological analysis of breast tissue. Eight breast cancer samples were investigated. Each sample contained a mixture of normal and cancerous tissues. In total, 522 separate XRD measurements were made at different locations across the samples (8 in total). The resulting XRD spectra were subjected to principal component analysis (PCA) in order to determine if there were any distinguishing features that could be used to identify different tissue components. 99.0% of the variation between the spectra were described by the first two principal components (PC). Comparing the location of points in PC space with the classification determined by histopathology indicated correlation between the shape/magnitude of the XRD spectra and the tissue type. These results are encouraging and suggest that XRD could be used for the intraoperative or postoperative classification of bulk tissue samples.
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Filik J, Ashton AW, Chang PCY, Chater PA, Day SJ, Drakopoulos M, Gerring MW, Hart ML, Magdysyuk OV, Michalik S, Smith A, Tang CC, Terrill NJ, Wharmby MT, Wilhelm H. Processing two-dimensional X-ray diffraction and small-angle scattering data in DAWN 2. J Appl Crystallogr 2017; 50:959-966. [PMID: 28656043 PMCID: PMC5458597 DOI: 10.1107/s1600576717004708] [Citation(s) in RCA: 185] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/26/2017] [Indexed: 11/10/2022] Open
Abstract
The Powder Calibration and Processing packages implemented in DAWN 2 provide an automated diffraction-geometry calibration and data processing environment for two-dimensional diffraction experiments. The customizable processing chains permit the execution of data processing steps to convert raw two-dimensional data into meaningful data and diffractograms. The provenance of the processed data is maintained, which guarantees reproducibility and transparency of the data treatment. A software package for the calibration and processing of powder X-ray diffraction and small-angle X-ray scattering data is presented. It provides a multitude of data processing and visualization tools as well as a command-line scripting interface for on-the-fly processing and the incorporation of complex data treatment tasks. Customizable processing chains permit the execution of many data processing steps to convert a single image or a batch of raw two-dimensional data into meaningful data and one-dimensional diffractograms. The processed data files contain the full data provenance of each process applied to the data. The calibration routines can run automatically even for high energies and also for large detector tilt angles. Some of the functionalities are highlighted by specific use cases.
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Affiliation(s)
- J Filik
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - A W Ashton
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - P C Y Chang
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - P A Chater
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - S J Day
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - M Drakopoulos
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - M W Gerring
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - M L Hart
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - O V Magdysyuk
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - S Michalik
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - A Smith
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - C C Tang
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - N J Terrill
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - M T Wharmby
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - H Wilhelm
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
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Abstract
Despite the importance of calcifications in early detection of breast cancer, and their suggested role in modulating breast cancer cell behaviour, very little detail is known about their chemical composition or how this relates to pathology. We measured the elemental composition of calcifications contained within histological sections of breast tissue biopsies, and related this to both crystallographic parameters measured previously in the same specimens, and to the histopathology report. The Ca:P ratio is of particular interest since this theoretically has potential as a non-invasive aid to diagnosis; this was found to lie in a narrow range similar to bone, with no significant difference between benign and malignant. The Mg:Ca ratio is also of interest due to the observed association of magnesium whitlockite with malignancy. The initially surprising inverse correlation found between whitlockite fraction and magnesium concentration can be explained by the location of the magnesium in calcified tissue. Sodium was also measured, and we discovered a substantial and significant difference in Na:Ca ratio in the apatite phase between benign and malignant specimens. This has potential for revealing malignant changes in the vicinity of a core needle biopsy.
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