1
|
Wang D, Xing C, Liang Y, Wang C, Zhao P, Liang X, Li Q, Yuan L. Ultrasound Imaging of Tumor Vascular CD93 with MMRN2 Modified Microbubbles for Immune Microenvironment Prediction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310421. [PMID: 38270289 DOI: 10.1002/adma.202310421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 01/18/2024] [Indexed: 01/26/2024]
Abstract
Vascular microenvironment is found to be closely related to immunotherapy efficacy. Identification and ultrasound imaging of the unique vascular characteristics, able to predict immune microenvironment, is important for immunotherapy decision-making. Herein, it is proved that high CD93 expression in the tumor vessels is closely related to the poor immune response of prostate cancer. For ultrasound molecular imaging of CD93, CD93-targeted microbubbles (MBs) consist a gaseous core and the MMRN2 (Multimerin-2) containing cell membrane (CM) /lipid hybrid membrane is then synthesized. In vitro and in vivo assays demonstrate that these MBs can recognize CD93 efficiently and then accumulate within tumor regions highly expressing CD93. Contrast-enhanced ultrasound (CEUS) imaging with CD93-targeted MBs demonstrates that targeted ultrasound intensity is negatively related to inflammatory tumor immune microenvironment (TIME) and cytotoxic T cell infiltration. Together, endothelial expression of CD93 in tumor is a unique predictor of immunosuppressive microenvironment and CD93-targeted MBs have a great potential to evaluate tumor immune status.
Collapse
Affiliation(s)
- Dingyi Wang
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
- Department of Ultrasound Diagnostics, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853, P. R. China
| | - Changyang Xing
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
| | - Yuan Liang
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
| | - Chen Wang
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
| | - Ping Zhao
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
| | - Xiao Liang
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
| | - Qiuyang Li
- Department of Ultrasound Diagnostics, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853, P. R. China
| | - Lijun Yuan
- Department of Ultrasound Diagnostics, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, P. R. China
| |
Collapse
|
2
|
Salib A, Halpern E, Eisenbrey J, Chandrasekar T, Chung PH, Forsberg F, Trabulsi EJ. The evolving role of contrast-enhanced ultrasound in urology: a review. World J Urol 2022; 41:673-678. [PMID: 35969244 DOI: 10.1007/s00345-022-04088-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 06/28/2022] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Ultrasound's versatility and ease of use has expanded its application in many clinical settings. Technological advancements with contrast-enhanced ultrasound (CEUS) have allowed high quality imaging similar to CT or MRI with lower risk of contrast toxicity and radiation exposure. In this review article we examine the development of CEUS and its vast applications in the field of urology. METHODS A PubMed literature search was performed using keywords: contrast enhanced ultrasound, prostate cancer, renal cancer, and multiparametric ultrasound. RESULTS The development of CEUS has improved transrectal ultrasound imaging with increased detection of prostate cancer (PCa). Further enhancements of CEUS such as subharmonic imaging (SHI), flash replenishment imaging (FRI) and contrast ultrasound dispersion imaging (CUDI) allow improved PCa diagnosis. CEUS has also emerged as an important tool in characterizing suspicious renal mass without compromising renal function with contrast imaging. CONCLUSION CEUS has modernized imaging and diagnosis of prostate and renal cancer. Future advancements and utilization of CEUS will allow its expansion into other urological subspecialties.
Collapse
Affiliation(s)
- Andrew Salib
- Department of Urology, Sidney Kimmel Medical College, Thomas Jefferson University, 1025 Walnut St. Ste. 1100, Philadelphia, PA, 19107, USA
| | - Ethan Halpern
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - John Eisenbrey
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Thenappan Chandrasekar
- Department of Urology, Sidney Kimmel Medical College, Thomas Jefferson University, 1025 Walnut St. Ste. 1100, Philadelphia, PA, 19107, USA
| | - Paul H Chung
- Department of Urology, Sidney Kimmel Medical College, Thomas Jefferson University, 1025 Walnut St. Ste. 1100, Philadelphia, PA, 19107, USA
| | - Flemming Forsberg
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Edouard J Trabulsi
- Department of Urology, Sidney Kimmel Medical College, Thomas Jefferson University, 1025 Walnut St. Ste. 1100, Philadelphia, PA, 19107, USA.
| |
Collapse
|
3
|
Wijaya A, Maruf A, Wu W, Wang G. Recent advances in micro- and nano-bubbles for atherosclerosis applications. Biomater Sci 2020; 8:4920-4939. [DOI: 10.1039/d0bm00762e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Micro- and nano-bubbles have been developed as powerful multimodal theranostic agents for atherosclerosis treatment.
Collapse
Affiliation(s)
- Andy Wijaya
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| | - Ali Maruf
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| | - Wei Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| |
Collapse
|
4
|
|
5
|
Maynard J, Hart P. The Opportunities and Use of Imaging to Measure Target Engagement. SLAS DISCOVERY 2019; 25:127-136. [PMID: 31885303 DOI: 10.1177/2472555219897270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Lack of efficacy and poor safety outcomes are deemed to be the greatest causes of clinical failure of novel therapeutics. The use of biomarkers that give accurate information on target engagement, providing confidence that pharmacological activity in the target organ is being achieved, is key in optimizing clinical success. Without a measurement of target engagement, it can be very difficult to discern the basis for any lack of efficacy of a drug molecule within the pharmaceutical industry. Target engagement can be measured in both an in vitro and in vivo setting, and in recent years imaging measurements have been used frequently in drug discovery and development to assess target engagement and receptor occupancy in both human and animal models. From this perspective, we assess and look at the advancements in both in vivo and ex vivo imaging to demonstrate the enormous potential that imaging has as an application to provide a greater understanding of target engagement with a correlative therapeutic impact.
Collapse
Affiliation(s)
| | - Philippa Hart
- Medicines Discovery Catapult, Alderley Park, Cheshire, UK
| |
Collapse
|
6
|
Kee ALY, Teo BM. Biomedical applications of acoustically responsive phase shift nanodroplets: Current status and future directions. ULTRASONICS SONOCHEMISTRY 2019; 56:37-45. [PMID: 31101274 DOI: 10.1016/j.ultsonch.2019.03.024] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/08/2019] [Accepted: 03/22/2019] [Indexed: 05/19/2023]
Abstract
The evolution of ultrasonic contrast agents to enhance the reflectivity of structures in the human body has consolidated ultrasound's stance as a reliable diagnostic imaging modality. A significant development within this field includes the advent of liquid nanodroplets that are capable of vaporising into gaseous microbubbles upon ultrasonic irradiation. This literature review will therefore appraise and summarise the available literature on the generation of phase-shift nanodroplets, their formulations, applications, safety issues, future developments and any implications that may inhibit their clinical implementation. The main findings of this review affirm that phase change nanodroplets do indeed demonstrate functionality in drug delivery and targeting and characterisation of tumours. Its bioeffects however, have not yet been extensively researched, prompting further exploration into how bubble size can be controlled once it has vaporised into microbubbles and the resulting complications. As such, future research should be directed towards determining the safety, longevity and suitability of phase-shift nanodroplets over contrast agents in current clinical use.
Collapse
Affiliation(s)
- Allison Loo Yong Kee
- Department of Medical Imaging and Radiation Sciences, Monash University, 10 Chancellors Walk, Clayton, Victoria 3800, Australia
| | - Boon Mian Teo
- School of Chemistry, Monash University, 19 Rainforest Walk, Clayton, Victoria 3800, Australia.
| |
Collapse
|
7
|
Patnaik SS, Simionescu DT, Goergen CJ, Hoyt K, Sirsi S, Finol EA. Pentagalloyl Glucose and Its Functional Role in Vascular Health: Biomechanics and Drug-Delivery Characteristics. Ann Biomed Eng 2019; 47:39-59. [PMID: 30298373 PMCID: PMC6318003 DOI: 10.1007/s10439-018-02145-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/28/2018] [Indexed: 02/08/2023]
Abstract
Pentagalloyl glucose (PGG) is an elastin-stabilizing polyphenolic compound that has significant biomedical benefits, such as being a free radical sink, an anti-inflammatory agent, anti-diabetic agent, enzymatic resistant properties, etc. This review article focuses on the important benefits of PGG on vascular health, including its role in tissue mechanics, the different modes of pharmacological administration (e.g., oral, intravenous and endovascular route, intraperitoneal route, subcutaneous route, and nanoparticle based delivery and microbubble-based delivery), and its potential therapeutic role in vascular diseases such as abdominal aortic aneurysms (AAA). In particular, the use of PGG for AAA suppression and prevention has been demonstrated to be effective only in the calcium chloride rat AAA model. Therefore, in this critical review we address the challenges that lie ahead for the clinical translation of PGG as an AAA growth suppressor.
Collapse
Affiliation(s)
- Sourav S Patnaik
- Vascular Biomechanics and Biofluids Laboratory, Department of Mechanical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249-0670, USA
| | - Dan T Simionescu
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | - Craig J Goergen
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Kenneth Hoyt
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX, USA
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shashank Sirsi
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX, USA
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ender A Finol
- Vascular Biomechanics and Biofluids Laboratory, Department of Mechanical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249-0670, USA.
| |
Collapse
|
8
|
Raghavendra AJ, Gregory WE, Slonecki TJ, Dong Y, Persaud I, Brown JM, Bruce TF, Podila R. Three-photon imaging using defect-induced photoluminescence in biocompatible ZnO nanoparticles. Int J Nanomedicine 2018; 13:4283-4290. [PMID: 30087560 PMCID: PMC6061205 DOI: 10.2147/ijn.s165201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background Although optical spectroscopy promises improved lateral resolution for cancer imaging, its clinical use is seriously impeded by background fluorescence and photon attenuation even in the so-called two-photon absorption (2PA) imaging modality. An efficient strategy to meet the clinical cancer imaging needs, beyond what two-photon absorption (2PA) offers, is to use longer excitation wavelengths through three-photon absorption (3PA). A variety of fluorescent dyes and nanoparticles (NPs) have been used in 3PA imaging. However, their nonlinear 3PA coefficient is often low necessitating high excitation powers, which cause overheating, photodamage, and photo-induced toxicity. Doped wide band gap semiconductors such as Mn:ZnS NPs have previously been used for 3PA but suffer from poor 3PA coefficients. Methods Here, we prepared ZnO NPs with intrinsic defects with high 3PA coefficients using a polyol method. We functionalized them with peptides for selective uptake by glioblastoma U87MG cells and used breast cancer MCF-7 cells as control for 3PA studies. Uptake was measured using inductively coupled plasma-mass spectrometry. Biocompatibility studies were performed using reactive oxygen species and cell viability assays. Results We demonstrate that ZnO NPs, which have a band gap of 3.37 eV with an order of magnitude higher 3PA coefficients, can facilitate the use of longer excitation wavelengths 950–1,100 nm for bioimaging. We used the presence intrinsic defects (such as O interstitials and Zn vacancies) in ZnO NPs to induce electronic states within the band gap that can support strong visible luminescence 550–620 nm without the need for extrinsic doping. The peptide functionalization of ZnO NPs showed selective uptake by U87MG cells unlike MCF-7 cells without the integrin receptors. Furthermore, all ZnO NPs were found to be biocompatible for 3PA imaging. Conclusion We show that defect-induced luminescence 550–620 nm in ZnO NPs (20 nm) due to 3PA at longer excitation (975 nm) can be used for 3PA imaging of U87MG glioblastoma cells with lower background noise.
Collapse
Affiliation(s)
- Achyut J Raghavendra
- Laboratory of Nano-Biophysics, Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, SC, USA,
| | - Wren E Gregory
- Laboratory of Nano-Biophysics, Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, SC, USA,
| | - Tyler J Slonecki
- Clemson Light Imaging Facility, Clemson University, Clemson, SC, USA
| | - Yongchang Dong
- Laboratory of Nano-Biophysics, Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, SC, USA,
| | - Indushekhar Persaud
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | - Jared M Brown
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | - Terri F Bruce
- Clemson Light Imaging Facility, Clemson University, Clemson, SC, USA
| | - Ramakrishna Podila
- Laboratory of Nano-Biophysics, Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, SC, USA, .,Clemson University School of Health Research and COMSET, Clemson University, Clemson, SC, USA,
| |
Collapse
|
9
|
Rojas JD, Lin F, Chiang YC, Chytil A, Chong DC, Bautch VL, Rathmell WK, Dayton PA. Ultrasound Molecular Imaging of VEGFR-2 in Clear-Cell Renal Cell Carcinoma Tracks Disease Response to Antiangiogenic and Notch-Inhibition Therapy. Theranostics 2018; 8:141-155. [PMID: 29290798 PMCID: PMC5743465 DOI: 10.7150/thno.19658] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 09/14/2017] [Indexed: 12/22/2022] Open
Abstract
Metastatic clear-cell renal cell carcinoma (ccRCC) affects thousands of patients worldwide each year. Antiangiogenic therapy has been shown to have beneficial effects initially, but resistance is eventually developed. Therefore, it is important to accurately track the response of cancer to different therapeutics in order to appropriately adjust the therapy to maximize efficacy. Change in tumor volume is the current gold standard for determining efficacy of treatment. However, functional variations can occur much earlier than measurable volume changes. Contrast-enhanced ultrasound (CEUS) is an important tool for assessing tumor progression and response to therapy, since it can monitor functional changes in the physiology. In this study, we demonstrate how ultrasound molecular imaging (USMI) can accurately track the evolution of the disease and molecular response to treatment. Methods A cohort of NSG (NOD/scid/gamma) mice was injected with ccRCC cells and treated with either the VEGF inhibitor SU (Sunitinib malate, Selleckchem, TX, USA) or the Notch pathway inhibitor GSI (Gamma secretase inhibitor, PF-03084014, Pfizer, New York, NY, USA), or started on SU and later switched to GSI (Switch group). The therapies used in the study focus on disrupting angiogenesis and proper vessel development. SU inhibits signaling of vascular endothelial growth factor (VEGF), which is responsible for the sprouting of new vasculature, and GSI inhibits the Notch pathway, which is a key factor in the correct maturation of newly formed vasculature. Microbubble contrast agents targeted to VEGFR-2 (VEGF Receptor) were delivered as a bolus, and the bound agents were imaged in 3D after the free-flowing contrast was cleared from the body. Additionally, the tumors were harvested at the end of the study and stained for CD31. Results The results show that MI can detect changes in VEGFR-2 expression in the group treated with SU within a week of the start of treatment, while differences in volume only become apparent after the mice have been treated for three weeks. Furthermore, USMI can detect response to therapy in 92% of cases after 1 week of treatment, while the detection rate is only 40% for volume measurements. The amount of targeting for the GSI and Control groups was high throughout the duration of the study, while that of the SU and Switch groups remained low. However, the amount of targeting in the Switch group increased to levels similar to those of the Control group after the treatment was switched to GSI. CD31 staining indicates significantly lower levels of patent vasculature for the SU group compared to the Control and GSI groups. Therefore, the results parallel the expected physiological changes in the tumor, since GSI promotes angiogenesis through the VEGF pathway, while SU inhibits it. Conclusion This study demonstrates that MI can track disease progression and assess functional changes in tumors before changes in volume are apparent, and thus, CEUS can be a valuable tool for assessing response to therapy in disease. Future work is required to determine whether levels of VEGFR-2 targeting correlate with eventual survival outcomes.
Collapse
Affiliation(s)
- Juan D Rojas
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, North Carolina
| | - Fanglue Lin
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, North Carolina
| | - Yun-Chen Chiang
- Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, North Carolina
| | - Anna Chytil
- Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Diana C Chong
- Curriculum in Genetics and Molecular Biology, The University of North Carolina, Chapel Hill, North Carolina
| | - Victoria L Bautch
- Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, North Carolina
- Curriculum in Genetics and Molecular Biology, The University of North Carolina, Chapel Hill, North Carolina
- Department of Biology, The University of North Carolina, Chapel Hill, North Carolina
| | - W Kimryn Rathmell
- Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Paul A Dayton
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, North Carolina
- Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, North Carolina
| |
Collapse
|
10
|
Fakhrejahani E, Torii M, Kitai T, Kanao S, Asao Y, Hashizume Y, Mikami Y, Yamaga I, Kataoka M, Sugie T, Takada M, Haga H, Togashi K, Shiina T, Toi M. Clinical Report on the First Prototype of a Photoacoustic Tomography System with Dual Illumination for Breast Cancer Imaging. PLoS One 2015; 10:e0139113. [PMID: 26506106 PMCID: PMC4624636 DOI: 10.1371/journal.pone.0139113] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 09/08/2015] [Indexed: 12/16/2022] Open
Abstract
Photoacoustic tomography is a recently developed imaging modality that can provide high spatial-resolution images of hemoglobin distribution in tissues such as the breast. Because breast cancer is an angiogenesis-dependent type of malignancy, we evaluated the clinical acceptability of breast tissue images produced using our first prototype photoacoustic mammography (PAM) system in patients with known cancer. Post-excisionally, histological sections of the tumors were stained immunohistochemically (IHC) for CD31 (an endothelial marker) and carbonic anhydrase IX (CAIX) (a marker of hypoxia). Whole-slide scanning and image analyses were used to evaluate the tumor microvessel distribution pattern and to calculate the total vascular perimeter (TVP)/area for each lesion. In this clinical study, 42 lesions were primarily scanned using PAM preoperatively, three of which were reported to be benign and were excluded from statistical analysis. Images were produced for 29 out of 39 cancers (visibility rate = 74.4%) at the median depth of 26.5 (3.25-51.2) mm. Age, menopausal status, body mass index, history of neoadjuvant treatment, clinical stage and histological tumor angiogenesis markers did not seem to affect the visibility. The oxygen saturation level in all of the measured lesions was lower than in the subcutaneous counterpart vessels (Wilcoxon test, p value<0.001), as well as in the counterpart contralateral normal breast region of interest (ROI) (Wilcoxon test, p value = 0.001). Although the oxygen saturation level was not statistically significant between CAIX-positive vs. -negative cases, lesional TVP/area showed a positive correlation with the oxygen saturation level only in the group that had received therapy before PAM. In conclusion, the vascular and oxygenation data obtained by PAM have great potential for identifying functional features of breast tumors.
Collapse
Affiliation(s)
- Elham Fakhrejahani
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masae Torii
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshiyuki Kitai
- Department of Surgery, Kishiwada City Hospital, Osaka, Japan
| | - Shotaro Kanao
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasufumi Asao
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Canon Inc., Tokyo, Japan
| | | | - Yoshiki Mikami
- Department of Diagnostic Pathology, Kumamoto University Hospital, Kumamoto, Japan
| | - Iku Yamaga
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoharu Sugie
- Department of Surgery, Kansai Medical University, Osaka, Japan
| | - Masahiro Takada
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tsuyoshi Shiina
- Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- * E-mail:
| |
Collapse
|
11
|
Mahajan A, Goh V, Basu S, Vaish R, Weeks AJ, Thakur MH, Cook GJ. Bench to bedside molecular functional imaging in translational cancer medicine: to image or to imagine? Clin Radiol 2015; 70:1060-82. [PMID: 26187890 DOI: 10.1016/j.crad.2015.06.082] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 06/03/2015] [Accepted: 06/08/2015] [Indexed: 02/05/2023]
Abstract
Ongoing research on malignant and normal cell biology has substantially enhanced the understanding of the biology of cancer and carcinogenesis. This has led to the development of methods to image the evolution of cancer, target specific biological molecules, and study the anti-tumour effects of novel therapeutic agents. At the same time, there has been a paradigm shift in the field of oncological imaging from purely structural or functional imaging to combined multimodal structure-function approaches that enable the assessment of malignancy from all aspects (including molecular and functional level) in a single examination. The evolving molecular functional imaging using specific molecular targets (especially with combined positron-emission tomography [PET] computed tomography [CT] using 2- [(18)F]-fluoro-2-deoxy-D-glucose [FDG] and other novel PET tracers) has great potential in translational research, giving specific quantitative information with regard to tumour activity, and has been of pivotal importance in diagnoses and therapy tailoring. Furthermore, molecular functional imaging has taken a key place in the present era of translational cancer research, producing an important tool to study and evolve newer receptor-targeted therapies, gene therapies, and in cancer stem cell research, which could form the basis to translate these agents into clinical practice, popularly termed "theranostics". Targeted molecular imaging needs to be developed in close association with biotechnology, information technology, and basic translational scientists for its best utility. This article reviews the current role of molecular functional imaging as one of the main pillars of translational research.
Collapse
Affiliation(s)
- A Mahajan
- Division of Imaging Sciences and Biomedical Engineering, King's College London, UK; Department of Radiodiagnosis, Tata Memorial Centre, Mumbai, 400012, India.
| | - V Goh
- Division of Imaging Sciences and Biomedical Engineering, King's College London, UK
| | - S Basu
- Radiation Medicine Centre, Bhabha Atomic Research Centre, Tata Memorial Hospital Annexe, Mumbai, 400 012, India
| | - R Vaish
- Department of Head and Neck Surgical Oncology, Tata Memorial Centre, Mumbai, 400012, India
| | - A J Weeks
- Division of Imaging Sciences and Biomedical Engineering, King's College London, UK
| | - M H Thakur
- Department of Radiodiagnosis, Tata Memorial Centre, Mumbai, 400012, India
| | - G J Cook
- Division of Imaging Sciences and Biomedical Engineering, King's College London, UK; Department of Nuclear Medicine, Guy's and St Thomas NHS Foundation Trust Hospital, London, UK
| |
Collapse
|
12
|
Paefgen V, Doleschel D, Kiessling F. Evolution of contrast agents for ultrasound imaging and ultrasound-mediated drug delivery. Front Pharmacol 2015; 6:197. [PMID: 26441654 PMCID: PMC4584939 DOI: 10.3389/fphar.2015.00197] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 08/31/2015] [Indexed: 12/21/2022] Open
Abstract
Ultrasound (US) is one of the most frequently used diagnostic methods. It is a non-invasive, comparably inexpensive imaging method with a broad spectrum of applications, which can be increased even more by using bubbles as contrast agents (CAs). There are various different types of bubbles: filled with different gases, composed of soft- or hard-shell materials, and ranging in size from nano- to micrometers. These intravascular CAs enable functional analyses, e.g., to acquire organ perfusion in real-time. Molecular analyses are achieved by coupling specific ligands to the bubbles' shell, which bind to marker molecules in the area of interest. Bubbles can also be loaded with or attached to drugs, peptides or genes and can be destroyed by US pulses to locally release the entrapped agent. Recent studies show that US CAs are also valuable tools in hyperthermia-induced ablation therapy of tumors, or can increase cellular uptake of locally released drugs by enhancing membrane permeability. This review summarizes important steps in the development of US CAs and introduces the current clinical applications of contrast-enhanced US. Additionally, an overview of the recent developments in US probe design for functional and molecular diagnosis as well as for drug delivery is given.
Collapse
Affiliation(s)
| | | | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, RWTH Aachen University Hospital, AachenGermany
| |
Collapse
|
13
|
Liu Y, Feshitan JA, Wei MY, Borden MA, Yuan B. Ultrasound-modulated fluorescence based on donor-acceptor-labeled microbubbles. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:036012. [PMID: 25789423 PMCID: PMC4365896 DOI: 10.1117/1.jbo.20.3.036012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 03/03/2015] [Indexed: 06/04/2023]
Abstract
A fluorescence resonance energy transfer (FRET)-based microbubble contrast agent system was designed to experimentally demonstrate the concept of ultrasound-modulated fluorescence (UMF). Microbubbles were simultaneously labeled with donor and acceptor fluorophores on the surface to minimize self-quenching and maximize FRET. In response to ultrasound, the quenching efficiency was greatly modulated by changing the distance between the donor and acceptor molecules through microbubble size oscillations. Both donors and acceptors exhibited UMF on individual microbubbles. The UMF strength of the donor was more significant compared to that of the acceptor. Furthermore, the UMF of the donor was observed from a microbubble solution in a turbid media. This study exploits the feasibility of donor–acceptor labeled microbubbles as UMF contrast agents.
Collapse
Affiliation(s)
- Yuan Liu
- The University of Texas at Arlington, Department of Bioengineering, 500 UTA Boulevard, Arlington, Texas 76010, United States
- The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, Joint Biomedical Engineering Program, 5323 Harry Hines Boulevard, Dallas, Texas 75390, United States
| | - Jameel A. Feshitan
- University of Colorado, Department of Mechanical Engineering, 1111 Engineering Drive, Boulder, Colorado 80309-0427, United States
| | - Ming-Yuan Wei
- The University of Texas at Arlington, Department of Bioengineering, 500 UTA Boulevard, Arlington, Texas 76010, United States
- The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, Joint Biomedical Engineering Program, 5323 Harry Hines Boulevard, Dallas, Texas 75390, United States
| | - Mark A. Borden
- University of Colorado, Department of Mechanical Engineering, 1111 Engineering Drive, Boulder, Colorado 80309-0427, United States
| | - Baohong Yuan
- The University of Texas at Arlington, Department of Bioengineering, 500 UTA Boulevard, Arlington, Texas 76010, United States
- The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, Joint Biomedical Engineering Program, 5323 Harry Hines Boulevard, Dallas, Texas 75390, United States
| |
Collapse
|
14
|
Cheng B, Wei MY, Liu Y, Pitta H, Xie Z, Hong Y, Nguyen KT, Yuan B. Development of Ultrasound-switchable Fluorescence Imaging Contrast Agents based on Thermosensitive Polymers and Nanoparticles. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS : A PUBLICATION OF THE IEEE LASERS AND ELECTRO-OPTICS SOCIETY 2014; 20:6801214. [PMID: 26052192 PMCID: PMC4454428 DOI: 10.1109/jstqe.2013.2280997] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work we first introduced a recently developed high-resolution, deep-tissue imaging technique, ultrasound-switchable fluorescence (USF). The imaging principles based on two types of USF contrast agents were reviewed. To improve USF imaging techniques further, excellent USF contrast agents were developed based on high-performance thermoresponsive polymers and environment-sensitive fluorophores. Herein, such contrast agents were synthesized and characterized with five key parameters: (1) peak excitation and emission wavelengths (λex and λem), (2) the fluorescence intensity ratio between on and off states (IOn/IOff), (3) the fluorescence lifetime ratio between on and off states (τOn/τOff), (4) the temperature threshold to switch on fluorophores (Tth), and (5) the temperature transition bandwidth (TBW). We mainly investigated fluorescence intensity and lifetime changes of four environment-sensitive dyes [7-(2-Aminoethylamino)-N,N-dimethyl-4-benzofurazansulfonamide (DBD-ED), St633, Sq660, and St700] as a function of temperature, while the dye was attached to poly(N-isopropylacrylamide) linear polymers or encapsulated in nanoparticles. Six fluorescence resonance energy transfer systems were invented in which both the donor (DBD-ED or ST425) and the acceptor (Sq660) were adopted. Our results indicate that three Förster resonance energy transfer systems, where both IOn/IOff and τOn/τOff are larger than 2.5, are promising for application in future surface tissue bioimaging by USF technique.
Collapse
Affiliation(s)
| | | | - Yuan Liu
- Ultrasound and Optical Imaging Laboratory, Department of Bioengineering, The University of Texas at Arlington, Arlington, TX 76010, USA
- Joint Biomedical Engineering Program, The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, TX 75390, USA
| | - Harish Pitta
- Joint Biomedical Engineering Program, The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, TX 75390, USA
- Department of Bioengineering, The University of Texas at Arlington, Arlington, TX 76010, USA
| | | | - Yi Hong
- Joint Biomedical Engineering Program, The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, TX 75390, USA
- Department of Bioengineering, The University of Texas at Arlington, Arlington, TX 76010, USA
| | - Kytai T. Nguyen
- Joint Biomedical Engineering Program, The University of Texas at Arlington and The University of Texas Southwestern Medical Center at Dallas, TX 75390, USA
- Department of Bioengineering, The University of Texas at Arlington, Arlington, TX 76010, USA
| | - Baohong Yuan
- Corresponding author: B. Yuan, . Tel: +1-817-272-2917; FAX: +1-817-272-2251
| |
Collapse
|