1
|
Kosianova А, Pak O, Bryukhovetskiy I. Regulation of cancer stem cells and immunotherapy of glioblastoma (Review). Biomed Rep 2024; 20:24. [PMID: 38170016 PMCID: PMC10758921 DOI: 10.3892/br.2023.1712] [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: 09/06/2023] [Accepted: 11/24/2023] [Indexed: 01/05/2024] Open
Abstract
Glioblastoma (GB) is one of the most adverse diagnoses in oncology. Complex current treatment results in a median survival of 15 months. Resistance to treatment is associated with the presence of cancer stem cells (CSCs). The present review aimed to analyze the mechanisms of CSC plasticity, showing the particular role of β-catenin in regulating vital functions of CSCs, and to describe the molecular mechanisms of Wnt-independent increase of β-catenin levels, which is influenced by the local microenvironment of CSCs. The present review also analyzed the reasons for the low effectiveness of using medication in the regulation of CSCs, and proposed the development of immunotherapy scenarios with tumor cell vaccines, containing heterogenous cancer cells able of producing a multidirectional antineoplastic immune response. Additionally, the possibility of managing lymphopenia by transplanting hematopoietic stem cells from a healthy sibling and using clofazimine or other repurposed drugs that reduce β-catenin concentration in CSCs was discussed in the present study.
Collapse
Affiliation(s)
- Аleksandra Kosianova
- Medical Center, School of Medicine and Life Science, Far Eastern Federal University, Vladivostok 690091, Russian Federation
| | - Oleg Pak
- Medical Center, School of Medicine and Life Science, Far Eastern Federal University, Vladivostok 690091, Russian Federation
| | - Igor Bryukhovetskiy
- Medical Center, School of Medicine and Life Science, Far Eastern Federal University, Vladivostok 690091, Russian Federation
| |
Collapse
|
2
|
LaLone V, Smith D, Diaz-Espinosa J, Rosania GR. Quantitative Raman chemical imaging of intracellular drug-membrane aggregates and small molecule drug precipitates in cytoplasmic organelles. Adv Drug Deliv Rev 2023; 202:115107. [PMID: 37769851 PMCID: PMC10841539 DOI: 10.1016/j.addr.2023.115107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Raman confocal microscopes have been used to visualize the distribution of small molecule drugs within different subcellular compartments. This visualization allows the discovery, characterization, and detailed analysis of the molecular transport phenomena underpinning the Volume of Distribution - a key parameter governing the systemic pharmacokinetics of small molecule drugs. In the specific case of lipophilic small molecules with large Volumes of Distribution, chemical imaging studies using Raman confocal microscopes have revealed how weakly basic, poorly soluble drug molecules can accumulate inside cells by forming stable, supramolecular complexes in association with cytoplasmic membranes or by precipitating out within organelles. To study the self-assembly and function of the resulting intracellular drug inclusions, Raman chemical imaging methods have been developed to measure and map the mass, concentration, and ionization state of drug molecules at a microscopic, subcellular level. Beyond the field of drug delivery, Raman chemical imaging techniques relevant to the study of microscopic drug precipitates and drug-lipid complexes which form inside cells are also being developed by researchers with seemingly unrelated scientific interests. Highlighting advances in data acquisition, calibration methods, and computational data management and analysis tools, this review will cover a decade of technological developments that enable the conversion of spectral signals obtained from Raman confocal microscopes into new discoveries and information about previously unknown, concentrative drug transport pathways driven by soluble-to-insoluble phase transitions occurring within the cytoplasmic organelles of eukaryotic cells.
Collapse
Affiliation(s)
- Vernon LaLone
- Cambium Analytica Research Laboratories, Traverse City, MI, United States
| | - Doug Smith
- Cambium Analytica Research Laboratories, Traverse City, MI, United States
| | - Jennifer Diaz-Espinosa
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, United States
| | - Gus R Rosania
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, United States.
| |
Collapse
|
3
|
Ni L, Wang X, Xu G. Photoacoustic clinical applications: Musculoskeletal and abdominal imaging. Z Med Phys 2023; 33:324-335. [PMID: 37365088 PMCID: PMC10517401 DOI: 10.1016/j.zemedi.2023.04.009] [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: 11/22/2022] [Revised: 04/04/2023] [Accepted: 04/21/2023] [Indexed: 06/28/2023]
Abstract
Photoacoustic (PA) imaging has been extensively investigated in application in biomedicine over the last decade. This article reviews the motivation, significance, and system configuration of a few ongoing studies of implementing photoacoustic technology in musculoskeletal imaging, abdominal imaging, and interstitial sensing. The review then summarizes the methodologies and latest progress of relevant projects. Finally, we discuss our expectations for the future of translation research in PA imaging.
Collapse
Affiliation(s)
- Linyu Ni
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI 48109, USA
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI 48109, USA
| | - Guan Xu
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI 48109, USA; Department of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall St., Ann Arbor, MI 48105, USA.
| |
Collapse
|
4
|
Neusaenger AL, Yao X, Yu J, Kim S, Hui HW, Huang L, Que C, Yu L. Amorphous Drug-Polymer Salts: Maximizing Proton Transfer to Enhance Stability and Release. Mol Pharm 2023; 20:1347-1356. [PMID: 36668815 PMCID: PMC9906740 DOI: 10.1021/acs.molpharmaceut.2c00942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An amorphous drug-polymer salt (ADPS) can be remarkably stable against crystallization at high temperature and humidity (e.g., 40°C/75% RH) and provide fast release. Here, we report that process conditions strongly influence the degree of proton transfer (salt formation) between a drug and a polymer and in turn the product's stability and release. For lumefantrine (LMF) formulated with poly(acrylic acid) (PAA), we first show that the amorphous materials prepared by slurry conversion and antisolvent precipitation produce a single trend in which the degree of drug protonation increases with PAA concentration from 0% for pure LMF to ∼100% above 70 wt % PAA, independent of PAA's molecular weight (1.8, 450, and 4000 kg/mol). This profile describes the equilibrium for salt formation and can be modeled as a chemical equilibrium in which the basic molecules compete for the acidic groups on the polymer chain. Relative to this equilibrium, the literature methods of hot-melt extrusion (HME) and rotary evaporation (RE) reached much lower degrees of salt formation. For example, at 40 wt % drug loading, HME reached 5% salt formation and RE 15%, both well below the equilibrium value of 85%. This is noteworthy given the common use of HME and RE in manufacturing amorphous formulations, indicating a need for careful control of process conditions to ensure the full interaction between the drug and the polymer. This need arises due to the low mobility of macromolecules and the mutual hindrance of adjacent reaction sites. We find that a high degree of salt formation enhances drug stability and release. For example, at 50% drug loading, an HME-like formulation with 19% salt formation crystallized faster and released only 20% of the drug relative to a slurry-prepared formulation with 70% salt formation. Based on this work, we recommend slurry conversion as the method for preparing ADPS for its ability to enhance salt formation and continuously adjust drug loading. While this work focused on salt formation, the impact of process conditions on the molecular-level interactions between a drug and a polymer is likely a general issue for amorphous solid dispersions, with consequences on product stability and drug release.
Collapse
Affiliation(s)
- Amy Lan Neusaenger
- School
of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Xin Yao
- School
of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Junguang Yu
- School
of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Soojin Kim
- School
of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, United States
| | - Ho-Wah Hui
- Drug
Product Development, Bristol Myers Squibb, Summit, New Jersey 07901, United States
| | - Lian Huang
- Drug
Product Development, Bristol Myers Squibb, Summit, New Jersey 07901, United States
| | - Chailu Que
- Drug
Product Development, Bristol Myers Squibb, Summit, New Jersey 07901, United States
| | - Lian Yu
- School
of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, United States,Department
of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States,
| |
Collapse
|
5
|
|
6
|
Ahmad S, Bhattacharya D, Gupta N, Rawat V, Tousif S, Van Kaer L, Das G. Clofazimine enhances the efficacy of BCG revaccination via stem cell-like memory T cells. PLoS Pathog 2020; 16:e1008356. [PMID: 32437421 PMCID: PMC7269335 DOI: 10.1371/journal.ppat.1008356] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/03/2020] [Accepted: 01/27/2020] [Indexed: 12/11/2022] Open
Abstract
Tuberculosis (TB) is one of the deadliest diseases, claiming ~2 million deaths annually worldwide. The majority of people in TB endemic regions are vaccinated with Bacillus Calmette Guerin (BCG), which is the only usable vaccine available. BCG is efficacious against meningeal and disseminated TB in children, but protective responses are relatively short-lived and fail to protect against adult pulmonary TB. The longevity of vaccine efficacy critically depends on the magnitude of long-lasting central memory T (TCM) cells, a major source of which is stem cell-like memory T (TSM) cells. These TSM cells exhibit enhanced self-renewal capacity as well as to rapidly respond to antigen and generate protective poly-functional T cells producing IFN-γ, TNF-α, IL-2 and IL-17. It is now evident that T helper Th 1 and Th17 cells are essential for host protection against TB. Recent reports have indicated that Th17 cells preserve the molecular signature for TSM cells, which eventually differentiate into IFN-γ-producing effector cells. BCG is ineffective in inducing Th17 cell responses, which might explain its inadequate vaccine efficacy. Here, we show that revaccination with BCG along with clofazimine treatment promotes TSM differentiation, which continuously restores TCM and T effector memory (TEM) cells and drastically increases vaccine efficacy in BCG-primed animals. Analyses of these TSM cells revealed that they are predominantly precursors to host protective Th1 and Th17 cells. Taken together, these findings revealed that clofazimine treatment at the time of BCG revaccination provides superior host protection against TB by increasing long-lasting TSM cells. Tuberculosis (TB) is one of the deadliest diseases, claiming ~2 million deaths annually worldwide. Bacillus Calmette Guerin (BCG) is the only usable vaccine available and exhibits efficacy against meningeal and disseminated TB in children. Consequently, the vast majority of people in TB endemic regions are vaccinated with BCG. However, host protective immune responses diminish over time due to gradual depletion of T central memory (TCM) cells, which are responsible for long-term host protection. Here, we provide evidence that revaccination with BCG along with the clofazimine, an approved drug for treatment of leprosy and drug-resistant TB, induces stem cell-like memory T (TSM) cells. TSM cells are precursors to TCM cells, and provide long-term host protection to TB by continuous supply of TCM cells. Interestingly, these TSM cells were generated from IL-17-producing T helper (Th)17 cells. These TSM cells differentiated into TCM and T effector memory (TEM) cells and maintained a stable pool of critically important Th1 and Th17 cells to provide optimal host protection against TB.
Collapse
Affiliation(s)
- Shaheer Ahmad
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | | | - Neeta Gupta
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Varsha Rawat
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Sultan Tousif
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Gobardhan Das
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
- * E-mail:
| |
Collapse
|
7
|
Ramasamy A, Serruys PW, Jones DA, Johnson TW, Torii R, Madden SP, Amersey R, Krams R, Baumbach A, Mathur A, Bourantas CV. Reliable in vivo intravascular imaging plaque characterization: A challenge unmet. Am Heart J 2019; 218:20-31. [PMID: 31655414 DOI: 10.1016/j.ahj.2019.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 07/16/2019] [Indexed: 12/11/2022]
Abstract
Intravascular imaging has enabled in vivo assessment of coronary artery pathology and detection of plaque characteristics that are associated with increased vulnerability. Prospective invasive imaging studies of coronary atherosclerosis have demonstrated that invasive imaging modalities can detect lesions that are likely to progress and cause cardiovascular events and provided unique insights about atherosclerotic evolution. However, despite the undoubted value of the existing imaging techniques in clinical and research arenas, all the available modalities have significant limitations in assessing plaque characteristics when compared with histology. Hybrid/multimodality intravascular imaging appears able to overcome some of the limitations of standalone imaging; however, there are only few histology studies that examined their performance in evaluating plaque pathobiology. In this article, we review the evidence about the efficacy of standalone and multi-modality/hybrid intravascular imaging in assessing plaque morphology against histology, highlight the advantages and limitations of the existing imaging techniques and discuss the future potential of emerging imaging modalities in the study of atherosclerosis.
Collapse
Affiliation(s)
- Anantharaman Ramasamy
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK; School of Medicine and Dentistry, Queen Mary University London, London, UK
| | - Patrick W Serruys
- International Centre for Circulatory Health, NHLI, Imperial College London, London, UK
| | - Daniel A Jones
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK; School of Medicine and Dentistry, Queen Mary University London, London, UK
| | | | - Ryo Torii
- Department of Mechanical Engineering, University College London, UK
| | - Sean P Madden
- Infraredx Inc., Burlington, MA, United States of America
| | - Rajiv Amersey
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Rob Krams
- School of Engineering and Materials Science, Queen Mary University London, London, UK
| | - Andreas Baumbach
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK; School of Medicine and Dentistry, Queen Mary University London, London, UK
| | - Anthony Mathur
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK; School of Medicine and Dentistry, Queen Mary University London, London, UK
| | - Christos V Bourantas
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK; School of Medicine and Dentistry, Queen Mary University London, London, UK; Institute of Cardiovascular Sciences, University College London, London, UK.
| |
Collapse
|
8
|
Wang H, Liu S, Wang T, Zhang C, Feng T, Tian C. Three-dimensional interventional photoacoustic imaging for biopsy needle guidance with a linear array transducer. JOURNAL OF BIOPHOTONICS 2019; 12:e201900212. [PMID: 31407486 DOI: 10.1002/jbio.201900212] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/24/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Needle placement is important for many clinical interventions, such as tissue biopsy, regional anesthesia and drug delivery. It is essential to visualize the spatial position of the needle and the target tissue during the interventions using appropriate imaging techniques. Based on the contrast of optical absorption, photoacoustic imaging is well suited for the guidance of interventional procedures. However, conventional photoacoustic imaging typically provides two-dimensional (2D) slices of the region of interest and could only visualize the needle and the target when they are within the imaging plane of the probe at the same time. This requires great alignment skill and effort. To ease this problem, we developed a 3D interventional photoacoustic imaging technique by fast scanning a linear array ultrasound probe and stitching acquired image slices. in vivo sentinel lymph node biopsy experiment shows that the technique could precisely locate a needle and a sentinel lymph node in a tissue volume while a perfusion experiment demonstrates that the technique could visualize the 3D distribution of injected methylene blue dye underneath the skin at high temporal and spatial resolution. The proposed technique provides a practical way for photoacoustic image-guided interventions.
Collapse
Affiliation(s)
- Hang Wang
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui, China
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui, China
| | - Songde Liu
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui, China
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui, China
| | - Tong Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Chenxi Zhang
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui, China
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui, China
| | - Ting Feng
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, China
| | - Chao Tian
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui, China
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui, China
| |
Collapse
|
9
|
Huang R, Zhu H, Shinn P, Ngan D, Ye L, Thakur A, Grewal G, Zhao T, Southall N, Hall MD, Simeonov A, Austin CP. The NCATS Pharmaceutical Collection: a 10-year update. Drug Discov Today 2019; 24:2341-2349. [PMID: 31585169 DOI: 10.1016/j.drudis.2019.09.019] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/16/2019] [Accepted: 09/24/2019] [Indexed: 12/25/2022]
Abstract
The National Center for Advancing Translational Sciences (NCATS) Pharmaceutical Collection (NPC), a comprehensive collection of clinically approved drugs, was made a public resource in 2011. Over the past decade, the NPC has been systematically profiled for activity across an array of pathways and disease models, generating an unparalleled amount of data. These data have not only enabled the identification of new repurposing candidates with several in clinical trials, but also uncovered new biological insights into drug targets and disease mechanisms. This retrospective provides an update on the NPC in terms of both successes and lessons learned. We also report our efforts in bringing the NPC up-to-date with drugs approved in recent years.
Collapse
Affiliation(s)
- Ruili Huang
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA.
| | - Hu Zhu
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Paul Shinn
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Deborah Ngan
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Lin Ye
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Ashish Thakur
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Gurmit Grewal
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Tongan Zhao
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Noel Southall
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Mathew D Hall
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Anton Simeonov
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Christopher P Austin
- Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| |
Collapse
|
10
|
Photoacoustic imaging of clofazimine hydrochloride nanoparticle accumulation in cancerous vs normal prostates. PLoS One 2019; 14:e0219655. [PMID: 31306463 PMCID: PMC6629155 DOI: 10.1371/journal.pone.0219655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/28/2019] [Indexed: 11/19/2022] Open
Abstract
Prostate cancer was the most common form and had the second highest death rate of male cancer in the United States in 2015. Current diagnosis techniques, such as prostate-specific antigen tests, transrectal ultrasound scans, and biopsies, are often inconclusive, and in the latter case, invasive. Here, we explore the use of clofazimine hydrochloride nanoparticles (CFZ-HCl NPs), a repurposed formulation from an FDA-approved antimycobacterial agent, as a photoacoustic contrast agent for the evaluation of prostate cancer due to its macrophage-targeting capabilities and high optical absorbance at 495 nm. Using a transgenic adenocarcinoma of the mouse prostate (TRAMP) mouse model, our results indicate a preferential accumulation of intravenously injected CFZ-HCl NPs in cancerous prostates over normal prostates. Differences in accumulation of CFZ-HCl NPs between cancerous and normal prostates were determined using a two-wavelength unmixing technique via ex vivo photoacoustic imaging. Thus, intravenous injection of CFZ-HCl NPs leads to differences in the interactions of the particles with cancerous vs normal prostates, while allowing for photoacoustic detection and analysis of prostate cancer. These findings could lead to the development of a new noninvasive technique for the detection and monitoring of prostate cancer progression in an animal model that can potentially be translated to human patients.
Collapse
|
11
|
Contrast Agent Enhanced Multimodal Photoacoustic Microscopy and Optical Coherence Tomography for Imaging of Rabbit Choroidal and Retinal Vessels in vivo. Sci Rep 2019; 9:5945. [PMID: 30976009 PMCID: PMC6459908 DOI: 10.1038/s41598-019-42324-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 03/27/2019] [Indexed: 12/11/2022] Open
Abstract
Multimodal imaging with photoacoustic microscopy (PAM) and optical coherence tomography (OCT) can be an effective method to evaluate the choroidal and retinal microvasculature. To improve the efficiency for visualizing capillaries, colloidal gold nanoparticles (AuNPs) have been applied as a multimodal contrast agent for both OCT and PAM imaging by taking advantage of the strong optical scattering and the strong optical absorption of AuNPs due to their surface plasmon resonance. Ultra-pure AuNPs were fabricated by femtosecond laser ablation, capped with polyethylene glycol (PEG), and administered to 13 New Zealand white rabbits and 3 Dutch Belted pigmented rabbits. The synthesized PEG-AuNPs (20.0 ± 1.5 nm) were demonstrated to be excellent contrast agents for PAM and OCT, and do not demonstrate cytotoxicity to bovine retinal endothelial cells in cell studies. The image signal from the retinal and choroidal vessels in living rabbits was enhanced by up to 82% for PAM and up to 45% for OCT, respectively, by the administered PEG-AuNPs, which enables detection of individual blood vessels by both imaging modalities. The biodistribution study demonstrated the AuNP accumulated primarily in the liver and spleen. Histology and TUNEL staining did not indicate cell injury or death in the lung, liver, kidney, spleen, heart, or eyes up to seven days after AuNP administration. PEG-AuNPs offer an efficient and safe contrast agent for multimodal ocular imaging to achieve improved characterization of microvasculature.
Collapse
|
12
|
Jo J, Tian C, Xu G, Sarazin J, Schiopu E, Gandikota G, Wang X. Photoacoustic tomography for human musculoskeletal imaging and inflammatory arthritis detection. PHOTOACOUSTICS 2018; 12:82-89. [PMID: 30596016 PMCID: PMC6306364 DOI: 10.1016/j.pacs.2018.07.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 06/11/2018] [Accepted: 07/24/2018] [Indexed: 05/05/2023]
Abstract
With the capability of assessing high resolution optical contrast in soft tissues, photoacoustic imaging (PAI) can offer valuable structural and functional information of human joints, and hold potential for diagnosis and treatment monitoring of inflammatory arthritis. Recent studies have demonstrated that PAI can map 2D and 3D morphology of the cartilage, synovium, vascularity, and bone tissue in human peripheral joints. Initial trials with patients affected by inflammatory arthritis have also suggested that PAI can detect the hemodynamic properties in articular tissues as well as their changes due to active inflammation. This review focuses on the recent progress in technical development of PAI for human musculoskeletal imaging and inflammation detection. PAI can provide non-invasive and non-ionizing serial measurements for monitoring of therapeutic interventions with the potential for higher sensitivity than existing imaging modalities such as ultrasound. However, further investigation is needed to validate the value of PAI in rheumatology clinical settings.
Collapse
Affiliation(s)
- Janggun Jo
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Chao Tian
- College of Engineering Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guan Xu
- Department of Radiology, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Jeffrey Sarazin
- Division of Rheumatology, Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, United States
| | - Elena Schiopu
- Division of Rheumatology, Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, United States
| | - Girish Gandikota
- Department of Radiology, University of Michigan Medical School, Ann Arbor, MI 48109, United States
- Corresponding author.
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
- Department of Radiology, University of Michigan Medical School, Ann Arbor, MI 48109, United States
- Corresponding author at: Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States.
| |
Collapse
|
13
|
Abstract
Photoacoustic ophthalmoscopy (PAOM) is a novel, hybrid, non-ionizing, and non-invasive imaging technology that has been used to assess the retina. PAOM can provide both anatomic and functional retinal characterizations with high resolution, high sensitivity, high contrast, and a high depth of penetration. Thus, ocular diseases can be precisely detected and visualized at earlier stages, resulting in an improved understanding of pathophysiology, improved management, and the improved monitoring of retinal treatment to prevent vision loss. To better visualize ocular components such as retinal vessels, choroidal vessels, choroidal neovascularization, retinal neovascularization, and the retinal pigment epithelium, an advanced multimodal ocular imaging platform has been developed by a combination of PAOM with other optical imaging techniques such as optical coherence tomography (OCT), scanning laser ophthalmoscopy (SLO), and fluorescence microscopy. The multimodal images can be acquired from a single imaging system and co-registered on the same image plane, enabling an improved evaluation of disease. In this review, the potential application of photoacoustic ophthalmoscopy in both research and clinical diagnosis are discussed as a medical screening technique for the visualization of various ocular diseases. The basic principle and requirements of photoacoustic ocular imaging are introduced. Then, various photoacoustic microscopy imaging systems of the retina in animals are presented. Finally, the future development of PAOM and multimodal imaging is discussed.
Collapse
Affiliation(s)
- Van Phuc Nguyen
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
| | - Yannis M. Paulus
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| |
Collapse
|
14
|
Rzeczycki P, Woldemichael T, Willmer A, Murashov MD, Baik J, Keswani R, Yoon GS, Stringer KA, Rodriguez-Hornedo N, Rosania GR. An Expandable Mechanopharmaceutical Device (1): Measuring the Cargo Capacity of Macrophages in a Living Organism. Pharm Res 2018; 36:12. [PMID: 30421091 PMCID: PMC6501569 DOI: 10.1007/s11095-018-2539-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 10/31/2018] [Indexed: 12/14/2022]
Abstract
PURPOSE Clofazimine (CFZ) is an FDA-approved, poorly soluble small molecule drug that precipitates as crystal-like drug inclusions (CLDIs) which accumulate in acidic cytoplasmic organelles of macrophages. In this study, we considered CLDIs as an expandable mechanopharmaceutical device, to study how macrophages respond to an increasingly massive load of endophagolysosomal cargo. METHODS First, we experimentally tested how the accumulation of CFZ in CLDIs impacted different immune cell subpopulations of different organs. Second, to further investigate the mechanism of CLDI formation, we asked whether specific accumulation of CFZ hydrochloride crystals in lysosomes could be explained as a passive, thermodynamic equilibrium phenomenon. A cellular pharmacokinetic model was constructed, simulating CFZ accumulation driven by pH-dependent ion trapping of the protonated drug in the acidic lysosomes, followed by the precipitation of CFZ hydrochloride salt via a common ion effect caused by high chloride concentrations. RESULTS While lower loads of CFZ were mostly accommodated in lung macrophages, increased CFZ loading was accompanied by organ-specific changes in macrophage numbers, size and intracellular membrane architecture, maximizing the cargo storage capabilities. With increasing loads, the total cargo mass and concentrations of CFZ in different organs diverged, while that of individual macrophages converged. The simulation results support the notion that the proton and chloride ion concentrations of macrophage lysosomes are sufficient to drive the massive, cell type-selective accumulation and growth of CFZ hydrochloride biocrystals. CONCLUSION CLDIs effectively function as an expandable mechanopharmaceutical device, revealing the coordinated response of the macrophage population to an increasingly massive, whole-organism endophagolysosomal cargo load.
Collapse
Affiliation(s)
- Phillip Rzeczycki
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Tehetina Woldemichael
- Biophysics Program, College of Literature, Science, and the Arts, University of Michigan, Ann Arbor, MI, USA
| | - Andrew Willmer
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Mikhail D Murashov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jason Baik
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Rahul Keswani
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Gi Sang Yoon
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kathleen A Stringer
- Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Nair Rodriguez-Hornedo
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Gus R Rosania
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA.
| |
Collapse
|
15
|
Angiolini L, Valetti S, Cohen B, Feiler A, Douhal A. Fluorescence imaging of antibiotic clofazimine encapsulated within mesoporous silica particle carriers: relevance to drug delivery and the effect on its release kinetics. Phys Chem Chem Phys 2018; 20:11899-11911. [PMID: 29666860 DOI: 10.1039/c7cp08328a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report on the encapsulation of the antibiotic clofazimine (CLZ) within the pores of mesoporous silica particles having hydrophilic (CBET value of 137) and more hydrophobic (CBET value of 94 after calcination at 600 °C) surfaces. We studied the effect of pH on the released amount of CLZ in aqueous solutions and observed a maximum at pH 4.1 in correlation with the solubility of the drug. Less release of the drug was observed from the more hydrophobic particles which was attributed to a difference in the affinity of the drug to the carrier particles. Fluorescence lifetime imaging microscopy, emission spectra, and fluorescence lifetimes of single drug loaded particles provided detailed understanding and new knowledge of the physical form of the encapsulated drug and the distribution within the particles. The distribution of CLZ within the particles was independent of the surface chemistry of the particles. The confirmation of CLZ molecules as monomers or aggregates was revealed by controlled removal of the drug with solvent. Additionally, the observed optical "halo effect" in the fluorescent images was interpreted in terms of specific quenching of high concentration of molecules. The emission lifetime experiments suggest stronger interaction of CLZ with the more hydrophobic particles, which is relevant to its release. The results reported in this work demonstrate that tuning the hydrophilicity/hydrophobicity of mesoporous silica particles can be used as a tool to control the release without impacting their loading ability.
Collapse
Affiliation(s)
- Lorenzo Angiolini
- Departamento de Química Física, Facultad de Ciencias del Medio Ambiente y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain.
| | | | | | | | | |
Collapse
|
16
|
Tian C, Zhang W, Nguyen VP, Huang Z, Wang X, Paulus YM. Integrated photoacoustic microscopy, optical coherence tomography, and fluorescence microscopy for multimodal chorioretinal imaging. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2018; 10494. [PMID: 31274948 DOI: 10.1117/12.2290594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Current clinically available retinal imaging techniques have limitations, including limited depth of penetration or requirement for the invasive injection of exogenous contrast agents. Here, we developed a novel multimodal imaging system for high-speed, high-resolution retinal imaging of larger animals, such as rabbits. The system integrates three state-of-the-art imaging modalities, including photoacoustic microscopy (PAM), optical coherence tomography (OCT), and fluorescence microscopy (FM). In vivo experimental results of rabbit eyes show that the PAM is able to visualize laser-induced retinal burns and distinguish individual eye blood vessels using a laser exposure dose of ~80 nJ, which is well below the American National Standards Institute (ANSI) safety limit 160 nJ. The OCT can discern different retinal layers and visualize laser burns and choroidal detachments. The novel multi-modal imaging platform holds great promise in ophthalmic imaging.
Collapse
Affiliation(s)
- Chao Tian
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
| | - Wei Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA.,Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Van Phuc Nguyen
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
| | - Ziyi Huang
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48105, USA
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA.,Department of Radiology, University of Michigan, Ann Arbor, MI 48105, USA
| | - Yannis M Paulus
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| |
Collapse
|
17
|
Woldemichael T, Keswani RK, Rzeczycki PM, Murashov MD, LaLone V, Gregorka B, Swanson JA, Stringer KA, Rosania GR. Reverse Engineering the Intracellular Self-Assembly of a Functional Mechanopharmaceutical Device. Sci Rep 2018; 8:2934. [PMID: 29440773 PMCID: PMC5811454 DOI: 10.1038/s41598-018-21271-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 01/31/2018] [Indexed: 12/19/2022] Open
Abstract
Weakly basic, poorly soluble chemical agents could be exploited as building blocks for constructing sophisticated molecular devices inside the cells of living organisms. Here, using experimental and computational approaches, we probed the relationship between the biological mechanisms mediating lysosomal ion homeostasis and the self-assembly of a weakly basic small molecule building block (clofazimine) into a functional, mechanopharmaceutical device (intracellular Crystal-Like Drug Inclusions – “CLDIs”) in macrophage lysosomes. Physicochemical considerations indicate that the intralysosomal stabilization of the self-assembled mechanopharmaceutical device depends on the pHmax of the weakly basic building block and its affinity for chloride, both of which are consistent with the pH and chloride content of a physiological lysosomal microenvironment. Most importantly, in vitro and in silico studies revealed that high expression levels of the vacuolar ATPase (V-ATPase), irrespective of the expression levels of chloride channels, are necessary and sufficient to explain the cell-type dependent formation, stabilization, and biocompatibility of the self-assembled mechanopharmaceutical device within macrophages.
Collapse
Affiliation(s)
- Tehetina Woldemichael
- Biophysics Program, College of Literature, Science, and the Arts, University of Michigan, Ann Arbor, MI, USA
| | - Rahul K Keswani
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Phillip M Rzeczycki
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Mikhail D Murashov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Vernon LaLone
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Brian Gregorka
- CLCI: Center for Live-Cell Imaging, Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Joel A Swanson
- Program in Immunology and Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Kathleen A Stringer
- Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Gus R Rosania
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA.
| |
Collapse
|
18
|
Tian C, Zhang W, Nguyen VP, Wang X, Paulus YM. Novel Photoacoustic Microscopy and Optical Coherence Tomography Dual-modality Chorioretinal Imaging in Living Rabbit Eyes. J Vis Exp 2018:57135. [PMID: 29553520 PMCID: PMC5912387 DOI: 10.3791/57135] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Photoacoustic ocular imaging is an emerging ophthalmic imaging technology that can noninvasively visualize ocular tissue by converting light energy into sound waves and is currently under intensive investigation. However, most reported work to date is focused on the imaging of the posterior segment of the eyes of small animals, such as rats and mice, which poses challenges for clinical human translation due to small eyeball sizes. This manuscript describes a novel photoacoustic microscopy (PAM) and optical coherence tomography (OCT) dual-modality system for posterior segment imaging of the eyes of larger animals, such as rabbits. The system configuration, system alignment, animal preparation, and dual-modality experimental protocols for in vivo, noninvasive, label-free chorioretinal imaging in rabbits are detailed. The effectiveness of the method is demonstrated through representative experimental results, including retinal and choroidal vasculature obtained by the PAM and OCT. This manuscript provides a practical guide to reproducing the imaging results in rabbits and advancing photoacoustic ocular imaging in larger animals.
Collapse
Affiliation(s)
- Chao Tian
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan
| | - Wei Zhang
- Department of Biomedical Engineering, University of Michigan; Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College
| | - Van Phuc Nguyen
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan; Department of Radiology, University of Michigan
| | - Yannis M Paulus
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan; Department of Biomedical Engineering, University of Michigan;
| |
Collapse
|
19
|
Tian C, Zhang W, Nguyen VP, Huang Z, Wang X, Paulus YM. Retinal and choroidal imaging in vivo using integrated photoacoustic microscopy and optical coherence tomography. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2018; 10474. [PMID: 31296972 DOI: 10.1117/12.2290667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Most reported photoacoustic ocular imaging work to date uses small animals, such as mice and rats, the eyes of which are small and less than one-third the size of a human eye, which poses a challenge for clinical translation. Here we achieved chorioretinal imaging of larger animals, i.e. rabbits, using a dual-modality photoacoustic microscopy (PAM) and optical coherence tomography (OCT) system. Preliminary experimental results in living rabbits demonstrate that the PAM can noninvasively visualize depth-resolved retinal and choroidal vessels using a safe laser exposure dose; and the OCT can finely distinguish different retinal layers, the choroid, and the sclera. This reported work might be a major step forward in clinical translation of photoacoustic microscopy.
Collapse
Affiliation(s)
- Chao Tian
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
| | - Wei Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA.,Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Van Phuc Nguyen
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
| | - Ziyi Huang
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48105, USA
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA.,Department of Radiology, University of Michigan, Ann Arbor, MI 48105, USA
| | - Yannis M Paulus
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| |
Collapse
|
20
|
Tian C, Zhang W, Mordovanakis A, Wang X, Paulus YM. Noninvasive chorioretinal imaging in living rabbits using integrated photoacoustic microscopy and optical coherence tomography. OPTICS EXPRESS 2017; 25:15947-15955. [PMID: 28789105 PMCID: PMC5557308 DOI: 10.1364/oe.25.015947] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Most reported photoacoustic ocular imaging work to date uses small animals, such as mice and rats, the eyeball sizes of which are less than one-third of those of humans, posing challenges for clinical translation. Here we developed a novel integrated photoacoustic microscopy (PAM) and optical coherence tomography (OCT) system for dual-modality chorioretinal imaging of larger animals, such as rabbits. The system has quantified lateral resolutions of 4.1 µm (PAM) and 3.8 µm (OCT), and axial resolutions of 37.0 µm (PAM) and 4.0 µm (OCT) at the focal plane of the objective. Experimental results in living rabbits demonstrate that the PAM can noninvasively visualize individual depth-resolved retinal and choroidal vessels using a laser exposure dose of ~80 nJ below the American National Standards Institute (ANSI) safety limit 160 nJ at 570 nm; and the OCT can finely distinguish different retinal layers, the choroid, and the sclera. This reported work may be a major step forward in clinical translation of the technology.
Collapse
Affiliation(s)
- Chao Tian
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| | - Wei Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Aghapi Mordovanakis
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
- Department of Radiology, University of Michigan, Ann Arbor, MI 48105, USA
| | - Yannis M. Paulus
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| |
Collapse
|
21
|
Hui J, Cao Y, Zhang Y, Kole A, Wang P, Yu G, Eakins G, Sturek M, Chen W, Cheng JX. Real-time intravascular photoacoustic-ultrasound imaging of lipid-laden plaque in human coronary artery at 16 frames per second. Sci Rep 2017; 7:1417. [PMID: 28469205 PMCID: PMC5431181 DOI: 10.1038/s41598-017-01649-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/31/2017] [Indexed: 11/18/2022] Open
Abstract
Intravascular photoacoustic-ultrasound (IVPA-US) imaging is an emerging hybrid modality for the detection of lipid-laden plaques, as it provides simultaneous morphological and lipid-specific chemical information of an artery wall. Real-time imaging and display at video-rate speed are critical for clinical utility of the IVPA-US imaging technology. Here, we demonstrate a portable IVPA-US system capable of imaging at up to 25 frames per second in real-time display mode. This unprecedented imaging speed was achieved by concurrent innovations in excitation laser source, rotary joint assembly, 1 mm IVPA-US catheter size, differentiated A-line strategy, and real-time image processing and display algorithms. Spatial resolution, chemical specificity, and capability for imaging highly dynamic objects were evaluated by phantoms to characterize system performance. An imaging speed of 16 frames per second was determined to be adequate to suppress motion artifacts from cardiac pulsation for in vivo applications. The translational capability of this system for the detection of lipid-laden plaques was validated by ex vivo imaging of an atherosclerotic human coronary artery at 16 frames per second, which showed strong correlation to gold-standard histopathology. Thus, this high-speed IVPA-US imaging system presents significant advances in the translational intravascular and other endoscopic applications.
Collapse
Affiliation(s)
- Jie Hui
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN, 47907, USA
| | - Yingchun Cao
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Yi Zhang
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN, 47907, USA
| | - Ayeeshik Kole
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.,Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Pu Wang
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Guangli Yu
- Nanjing Institute of Advanced Laser Technology, Nanjing, 210038, China
| | - Gregory Eakins
- Jonathan Amy Facility for Chemical Instrumentation, Purdue University, West Lafayette, IN, 47907, USA
| | - Michael Sturek
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.,Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Weibiao Chen
- Nanjing Institute of Advanced Laser Technology, Nanjing, 210038, China.,Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA. .,Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA. .,Purdue Institute for Inflammation, Immunology, and Infectious Disease, Purdue University, West Lafayette, IN, 47907, USA.
| |
Collapse
|
22
|
Horstman EM, Keswani RK, Frey BA, Rzeczycki PM, LaLone V, Bertke JA, Kenis PJA, Rosania GR. Elasticity in Macrophage-Synthesized Biocrystals. Angew Chem Int Ed Engl 2017; 56:1815-1819. [PMID: 28079296 PMCID: PMC5514847 DOI: 10.1002/anie.201611195] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Indexed: 01/22/2023]
Abstract
Supramolecular crystalline assembly constitutes a rational approach to bioengineer intracellular structures. Here, biocrystals of clofazimine (CFZ) that form in vivo within macrophages were measured to have marked curvature. Isolated crystals, however, showed reduced curvature suggesting that intracellular forces bend these drug crystals. Consistent with the ability of biocrystals to elastically deform, the inherent crystal structure of the principal molecular component of the biocrystals-the hydrochloride salt of CFZ (CFZ-HCl)-has a corrugated packing along the (001) face and weak dispersive bonding in multiple directions. These characteristics were previously found to be linked to the elasticity of other organic crystals. Internal stress in bent CFZ-HCl led to photoelastic effects on the azimuthal orientation of polarized light transmittance. We propose that elastic, intracellular crystals can serve as templates to construct functional microdevices with different applications.
Collapse
Affiliation(s)
- Elizabeth M Horstman
- Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana-Champaign, 600 South Mathews Street, Urbana, IL, 61801, USA
| | - Rahul K Keswani
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, 428 Church Street, Ann Arbor, MI, 48109, USA
| | - Benjamin A Frey
- Morgan State University, 1700 E Cold Spring Ln, Baltimore, MD, 21251, USA
| | - Phillip M Rzeczycki
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, 428 Church Street, Ann Arbor, MI, 48109, USA
| | - Vernon LaLone
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, 428 Church Street, Ann Arbor, MI, 48109, USA
| | - Jeffery A Bertke
- School of Chemical Sciences, University of Illinois, Urbana-Champaign, 505 South Mathews Street, Urbana, IL, 61801, USA
| | - Paul J A Kenis
- Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana-Champaign, 600 South Mathews Street, Urbana, IL, 61801, USA
| | - Gus R Rosania
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, 428 Church Street, Ann Arbor, MI, 48109, USA
| |
Collapse
|
23
|
Horstman EM, Keswani RK, Frey BA, Rzeczycki PM, LaLone V, Bertke JA, Kenis PJA, Rosania GR. Elasticity in Macrophage-Synthesized Biocrystals. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611195] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Elizabeth M. Horstman
- Department of Chemical and Biomolecular Engineering; University of Illinois, Urbana-Champaign; 600 South Mathews Street Urbana IL 61801 USA
| | - Rahul K. Keswani
- Department of Pharmaceutical Sciences; College of Pharmacy; University of Michigan, Ann Arbor; 428 Church Street Ann Arbor MI 48109 USA
| | - Benjamin A. Frey
- Morgan State University; 1700 E Cold Spring Ln Baltimore MD 21251 USA
| | - Phillip M. Rzeczycki
- Department of Pharmaceutical Sciences; College of Pharmacy; University of Michigan, Ann Arbor; 428 Church Street Ann Arbor MI 48109 USA
| | - Vernon LaLone
- Department of Pharmaceutical Sciences; College of Pharmacy; University of Michigan, Ann Arbor; 428 Church Street Ann Arbor MI 48109 USA
| | - Jeffery A. Bertke
- School of Chemical Sciences; University of Illinois, Urbana-Champaign; 505 South Mathews Street Urbana IL 61801 USA
| | - Paul J. A. Kenis
- Department of Chemical and Biomolecular Engineering; University of Illinois, Urbana-Champaign; 600 South Mathews Street Urbana IL 61801 USA
| | - Gus R. Rosania
- Department of Pharmaceutical Sciences; College of Pharmacy; University of Michigan, Ann Arbor; 428 Church Street Ann Arbor MI 48109 USA
| |
Collapse
|
24
|
Tian C, Qian W, Shao X, Xie Z, Cheng X, Liu S, Cheng Q, Liu B, Wang X. Plasmonic Nanoparticles with Quantitatively Controlled Bioconjugation for Photoacoustic Imaging of Live Cancer Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1600237. [PMID: 27981012 PMCID: PMC5157183 DOI: 10.1002/advs.201600237] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/04/2016] [Indexed: 05/18/2023]
Abstract
Detection and imaging of single cancer cells is critical for cancer diagnosis and understanding of cellular dynamics. Photoacoustic imaging (PAI) provides a potential tool for the study of cancer cell dynamics, but faces the challenge that most cancer cells lack sufficient endogenous contrast. Here, a type of colloidal gold nanoparticles (AuNPs) are physically fabricated and are precisely functionalized with quantitative amounts of functional ligands (i.e., polyethyleneglycol (PEG) and (Arginine(R)-Glycine(G)-Aspartic(D))4 (RGD) peptides) to serve as an exogenous contrast agent for PAI of single cells. The functionalized AuNPs, with a fixed number of PEG but different RGD densities, are delivered into human prostate cancer cells. Radioactivity and photoacoustic analyses show that, although cellular uptake efficiency of the AuNPs linearly increases along with RGD density, photoacoustic signal generation efficiency does not and only maximize at a moderate RGD density. The functionalization of the AuNPs is in turn optimized based on the experimental finding, and single cancer cells are imaged using a custom photoacoustic microscopy with high-resolution. The quantitatively functionalized AuNPs together with the high-resolution PAI system provide a unique platform for the detection and imaging of single cancer cells, and may impact not only basic science but also clinical diagnostics on a range of cancers.
Collapse
Affiliation(s)
- Chao Tian
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Wei Qian
- IMRA America, IncAnn ArborMI48105USA
| | - Xia Shao
- Department of RadiologyUniversity of MichiganAnn ArborMI48109USA
| | - Zhixing Xie
- Department of RadiologyUniversity of MichiganAnn ArborMI48109USA
| | - Xu Cheng
- Department of UrologyUniversity of MichiganAnn ArborMI48109USA
| | - Shengchun Liu
- College of Physical Science and TechnologyHeilongjiang UniversityHarbin150080China
| | - Qian Cheng
- Institute of AcousticsTongji UniversityShanghai200092China
| | - Bing Liu
- IMRA America, IncAnn ArborMI48105USA
| | - Xueding Wang
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMI48109USA
- Department of RadiologyUniversity of MichiganAnn ArborMI48109USA
- Institute of AcousticsTongji UniversityShanghai200092China
| |
Collapse
|
25
|
Tian C, Qian W, Shao X, Xie Z, Cheng X, Liu S, Cheng Q, Liu B, Wang X. Plasmonic Nanoparticles with Quantitatively Controlled Bioconjugation for Photoacoustic Imaging of Live Cancer Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016. [PMID: 27981012 DOI: 10.1002/advs.201600237/full] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Detection and imaging of single cancer cells is critical for cancer diagnosis and understanding of cellular dynamics. Photoacoustic imaging (PAI) provides a potential tool for the study of cancer cell dynamics, but faces the challenge that most cancer cells lack sufficient endogenous contrast. Here, a type of colloidal gold nanoparticles (AuNPs) are physically fabricated and are precisely functionalized with quantitative amounts of functional ligands (i.e., polyethyleneglycol (PEG) and (Arginine(R)-Glycine(G)-Aspartic(D))4 (RGD) peptides) to serve as an exogenous contrast agent for PAI of single cells. The functionalized AuNPs, with a fixed number of PEG but different RGD densities, are delivered into human prostate cancer cells. Radioactivity and photoacoustic analyses show that, although cellular uptake efficiency of the AuNPs linearly increases along with RGD density, photoacoustic signal generation efficiency does not and only maximize at a moderate RGD density. The functionalization of the AuNPs is in turn optimized based on the experimental finding, and single cancer cells are imaged using a custom photoacoustic microscopy with high-resolution. The quantitatively functionalized AuNPs together with the high-resolution PAI system provide a unique platform for the detection and imaging of single cancer cells, and may impact not only basic science but also clinical diagnostics on a range of cancers.
Collapse
Affiliation(s)
- Chao Tian
- Department of Biomedical Engineering University of Michigan Ann Arbor MI 48109 USA
| | - Wei Qian
- IMRA America, Inc Ann Arbor MI 48105 USA
| | - Xia Shao
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
| | - Zhixing Xie
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
| | - Xu Cheng
- Department of Urology University of Michigan Ann Arbor MI 48109 USA
| | - Shengchun Liu
- College of Physical Science and Technology Heilongjiang University Harbin 150080 China
| | - Qian Cheng
- Institute of Acoustics Tongji University Shanghai 200092 China
| | - Bing Liu
- IMRA America, Inc Ann Arbor MI 48105 USA
| | - Xueding Wang
- Department of Biomedical Engineering University of Michigan Ann Arbor MI 48109 USA; Department of Radiology University of Michigan Ann Arbor MI 48109 USA; Institute of Acoustics Tongji University Shanghai 200092 China
| |
Collapse
|
26
|
Tian C, Feng T, Wang C, Liu S, Cheng Q, Oliver DE, Wang X, Xu G. Non-Contact Photoacoustic Imaging Using a Commercial Heterodyne Interferometer. IEEE SENSORS JOURNAL 2016; 16:8381-8388. [PMID: 28210188 PMCID: PMC5305171 DOI: 10.1109/jsen.2016.2611569] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Most current photoacoustic imaging (PAI) systems employ piezoelectric transducers to receive photoacoustic signals, which requires coupling medium to facilitate photoacoustic wave propagation and are not favored in many applications. Here, we report an all-optical non-contact PAI system based on a commercial heterodyne interferometer working at 1550 nm. The interferometer remotely detects ultrasound-induced surface vibration and does not involve any physical contact with the sample. The theoretically predicated and experimentally measured noise equivalent detection limits of the optical sensor are about 4.5 and 810 Pa over 1.2 MHz bandwidth. Using a raster-scan PAI system equipped with the non-contact design, stereotactic boundaries of an artificial tumor in a pig brain were accurately delineated. The non-contact design also enables the tomographic PAI of biological tissue samples in a non-invasive manner. The preliminary results and analyses reveal that the heterodyne interferometer-based non-contact PAI system holds good potential in biomedical imaging.
Collapse
Affiliation(s)
- Chao Tian
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109 USA
| | - Ting Feng
- Department of Electronic Science and Engineering, Nanjing University, Nanjing 21000, China, and also with the Department of Radiology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Cheng Wang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shengchun Liu
- College of Physical Science and Technology, Heilongjiang University, Harbin 150080, China
| | - Qian Cheng
- Institute of Acoustics, Tongji University, Shanghai 200092, China
| | | | - Xueding Wang
- Department of Biomedical Engineering and the Department of Radiology, University of Michigan, Ann Arbor, MI 48109 USA, and also with the Institute of Acoustics, Tongji University, Shanghai 200092, China
| | - Guan Xu
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109 USA
| |
Collapse
|