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Wu C, Jiang P, Su W, Yan Y. Alkaline Phosphatase-Instructed Peptide Assemblies for Imaging and Therapeutic Applications. Biomacromolecules 2024. [PMID: 39185628 DOI: 10.1021/acs.biomac.4c00795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Self-assembly, a powerful strategy for constructing highly stable and well-ordered supramolecular structures, widely exists in nature and in living systems. Peptides are frequently used as building blocks in the self-assembly process due to their advantageous characteristics, such as ease of synthesis, tunable mechanical stability, good biosafety, and biodegradability. Among the initiators for peptide self-assembly, enzymes are excellent candidates for guiding this process under mild reaction conditions. As a crucial and commonly used biomarker, alkaline phosphatase (ALP) cleaves phosphate groups, triggering a hydrophilicity-to-hydrophobicity transformation that induces peptide self-assembly. In recent years, ALP-instructed peptide self-assembly has made breakthroughs in biological imaging and therapy, inspiring the development of self-assembly biomaterials for diagnosis and therapeutics. In this review, we highlight the most recent advancements in ALP-instructed peptide assemblies and provide perspectives on their potential impact. Finally, we briefly discuss the ongoing challenges for future research in this field.
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Affiliation(s)
- Chengfan Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Pingge Jiang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Wen Su
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yunfeng Yan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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Nouizi F, Kwong TC, Turong B, Nikkhah D, Sampathkumaran U, Gulsen G. Fast ICCD-based temperature modulated fluorescence tomography. APPLIED OPTICS 2023; 62:7420-7430. [PMID: 37855510 DOI: 10.1364/ao.499281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/06/2023] [Indexed: 10/20/2023]
Abstract
Fluorescence tomography (FT) has become a powerful preclinical imaging modality with a great potential for several clinical applications. Although it has superior sensitivity and utilizes low-cost instrumentation, the highly scattering nature of bio-tissue makes FT in thick samples challenging, resulting in poor resolution and low quantitative accuracy. To overcome the limitations of FT, we previously introduced a novel method, termed temperature modulated fluorescence tomography (TMFT), which is based on two key elements: (1) temperature-sensitive fluorescent agents (ThermoDots) and (2) high-intensity focused ultrasound (HIFU). The fluorescence emission of ThermoDots increases up to hundredfold with only several degree temperature elevation. The exceptional and reversible response of these ThermoDots enables their modulation, which effectively allows their localization using the HIFU. Their localization is then used as functional a priori during the FT image reconstruction process to resolve their distribution with higher spatial resolution. The last version of the TMFT system was based on a cooled CCD camera utilizing a step-and-shoot mode, which necessitated long total imaging time only for a small selected region of interest (ROI). In this paper, we present the latest version of our TMFT technology, which uses a much faster continuous HIFU scanning mode based on an intensified CCD (ICCD) camera. This new, to the best of our knowledge, version can capture the whole field-of-view (FOV) of 50×30m m 2 at once and reduces the total imaging time down to 30 min, while preserving the same high resolution (∼1.3m m) and superior quantitative accuracy (<7% error) as the previous versions. Therefore, this new method is an important step toward utilization of TMFT for preclinical imaging.
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Zhang P, Liu J, Yin L, An Y, Zhang S, Tong W, Hui H, Tian J. Adaptive permissible region based random Kaczmarz reconstruction method for localization of carotid atherosclerotic plaques in fluorescence molecular tomography. Phys Med Biol 2022; 67. [DOI: 10.1088/1361-6560/ac8718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/04/2022] [Indexed: 11/12/2022]
Abstract
Abstract
Objective. In this study, we propose the adaptive permissible region based random Kaczmarz method as an improved reconstruction method to recover small carotid atherosclerotic plaque targets in rodents with high resolution in fluorescence molecular tomography (FMT). Approach. We introduce the random Kaczmarz method as an advanced minimization method to solve the FMT inverse problem. To satisfy the special condition of this method, we proposed an adaptive permissible region strategy based on traditional permissible region methods to flexibly compress the dimension of the solution space. Main results. Monte Carlo simulations, phantom experiments, and in vivo experiments demonstrate that the proposed method can recover the small carotid atherosclerotic plaque targets with high resolution and accuracy, and can achieve lower root mean squared error and distance error (DE) than other traditional methods. For targets with 1.5 mm diameter and 0.5 mm separation, the DE indicators can be improved by up to 40%. Moreover, the proposed method can be utilized for in vivo locating atherosclerotic plaques with high accuracy and robustness. Significance. We applied the random Kaczmarz method to solve the inverse problem in FMT and improve the reconstruction result via this advanced minimization method. We verified that the FMT technology has a great potential to locate and quantify atherosclerotic plaques with higher accuracy, and can be expanded to more preclinical research.
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Spatarelu CP, Van Namen A, Jandhyala S, Luke GP. Fluorescent Phase-Changing Perfluorocarbon Nanodroplets as Activatable Near-Infrared Probes. Int J Mol Sci 2022; 23:ijms23137312. [PMID: 35806326 PMCID: PMC9266996 DOI: 10.3390/ijms23137312] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 02/01/2023] Open
Abstract
The sensitivity of fluorescence imaging is limited by the high optical scattering of tissue. One approach to improve sensitivity to small signals is to use a contrast agent with a signal that can be externally modulated. In this work, we present a new phase-changing perfluorocarbon nanodroplet contrast agent loaded with DiR dye. The nanodroplets undergo a liquid-to-gas phase transition when exposed to an externally applied laser pulse. This results in the unquenching of the encapsulated dye, thus increasing the fluorescent signal, a phenomenon that can be characterized by an ON/OFF ratio between the fluorescence of activated and nonactivated nanodroplets, respectively. We investigate and optimize the quenching/unquenching of DiR upon nanodroplets’ vaporization in suspension, tissue-mimicking phantoms and a subcutaneous injection mouse model. We also demonstrate that the vaporized nanodroplets produce ultrasound contrast, enabling multimodal imaging. This work shows that these nanodroplets could be applied to imaging applications where high sensitivity is required.
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Affiliation(s)
| | - Austin Van Namen
- Dartmouth College, 15 Thayer Drive, Hanover, NH 03755, USA; (C.-P.S.); (A.V.N.); (S.J.)
| | - Sidhartha Jandhyala
- Dartmouth College, 15 Thayer Drive, Hanover, NH 03755, USA; (C.-P.S.); (A.V.N.); (S.J.)
| | - Geoffrey P. Luke
- Dartmouth College, 15 Thayer Drive, Hanover, NH 03755, USA; (C.-P.S.); (A.V.N.); (S.J.)
- Norris Cotton Cancer Center, 1 Medical Center Drive, Lebanon, NH 03766, USA
- Correspondence:
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Soni GK, Wangoo N, Cokca C, Peneva K, Sharma RK. Ultrasensitive aptasensor for arsenic detection using quantum dots and guanylated Poly(methacrylamide). Anal Chim Acta 2022; 1209:339854. [DOI: 10.1016/j.aca.2022.339854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/04/2022] [Accepted: 04/16/2022] [Indexed: 11/16/2022]
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Liu RL, Cai RQ. Recent advances in ultrasound-controlled fluorescence technology for deep tissue optical imaging. J Pharm Anal 2021; 12:530-540. [PMID: 36105171 PMCID: PMC9463483 DOI: 10.1016/j.jpha.2021.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 09/13/2021] [Accepted: 10/09/2021] [Indexed: 12/01/2022] Open
Abstract
Fluorescence imaging is a noninvasive and dynamic real-time imaging technique; however, it exhibits poor spatial resolution in centimeter-deep tissues because biological tissues are highly scattering media for optical radiation. The recently developed ultrasound-controlled fluorescence (UCF) imaging is a novel imaging technique that can overcome this bottleneck. Previous studies suggest that the effective contrast agent and sensitive imaging system are the two pivotal factors for generating high-resolution UCF images ex vivo and/or in vivo. Here, this review highlights the recent advances (2015–2020) in the design and synthesis of contrast agents and the improvement of imaging systems to realize high-resolution UCF imaging of deep tissues. The imaging performances of various UCF systems, including the signal-to-noise ratio, imaging resolution, and imaging depth, are specifically discussed. In addition, the challenges and prospects are highlighted. With continuously increasing research interest in this field and emerging multidisciplinary applications, UCF imaging with higher spatial resolution and larger imaging depth may be developed shortly, which is expected to have a far-reaching impact on disease surveillance and/or therapy. The unique UCF technique in high resolution imaging was described. The contrast agents and imaging systems of UCF imaging were discussed. Recent advances and prospects of NIR-UCF technique were summarized.
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Affiliation(s)
- Rui-Lin Liu
- School of Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China
- Department of Pharmaceutical Analysis, School of Pharmacy, Xi'an Jiaotong University, Xi'an, 710061, China
- Corresponding author. School of Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China.
| | - Ru-Qian Cai
- School of Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China
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Chen W, Goldys EM, Deng W. Light-induced liposomes for cancer therapeutics. Prog Lipid Res 2020; 79:101052. [DOI: 10.1016/j.plipres.2020.101052] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 07/05/2020] [Accepted: 07/08/2020] [Indexed: 12/13/2022]
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Liu Y, Yao T, Cai W, Yu S, Hong Y, Nguyen KT, Yuan B. A Biocompatible and Near-Infrared Liposome for In Vivo Ultrasound-Switchable Fluorescence Imaging. Adv Healthc Mater 2020; 9:e1901457. [PMID: 31957243 DOI: 10.1002/adhm.201901457] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/18/2019] [Indexed: 12/17/2022]
Abstract
Fluorescence imaging is a remarkable tool for molecular targeting and multicolor imaging, but it suffers from low resolution in centimeter-deep tissues. The recently developed ultrasound-switchable fluorescence (USF) imaging has overcome this challenge and achieved in vivo imaging in a mouse with help from the indocyanine green (ICG) dye encapsulated poly(N-isopropylacrylamide) (ICG-PNIPAM) contrast agent. However, the ICG-PNIPAM has shortcomings, such as concerns about cytotoxicity and blueshifted excitation and emission spectra. This study introduces a newly developed ICG-encapsulated liposome to broaden the contrast agent selection for USF imaging and resolve the issues mentioned above. The emission peak of the ICG-liposome is 836 nm with excellent biostability and USF imaging capability. Furthermore, the cell viability test verifies the low cytotoxicity feature. Eventually, both ex vivo and in vivo USF imaging are successfully achieved and 3D USF images are acquired. The ex vivo result confirms that the ICG-liposome maintains the thermoresponsive characteristic at the right lobe of the liver and is able to conduct the USF imaging. The further in vivo USF imaging demonstrates that although the whole liver emitted fluorescence, only the right lobe of the liver contains the working ICG-liposome.
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Affiliation(s)
- Yang Liu
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
- Ultrasound and Optical Imaging Laboratory Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
| | - Tingfeng Yao
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
- Ultrasound and Optical Imaging Laboratory Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
| | - Wenbin Cai
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
- Ultrasound and Optical Imaging Laboratory Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
| | - Shuai Yu
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
- Ultrasound and Optical Imaging Laboratory Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
| | - Yi Hong
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
| | - Kytai T. Nguyen
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
| | - Baohong Yuan
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas at Arlington and University of Texas Southwestern Medical Center Dallas TX 75235 USA
- Ultrasound and Optical Imaging Laboratory Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
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Xia Y, Xu C, Zhang X, Gao J, Wu Y, Li C, Wang Z. An activatable liposomal fluorescence probe based on fluorescence resonance energy transfer and aggregation induced emission effect for sensitive tumor imaging. Colloids Surf B Biointerfaces 2020; 188:110789. [PMID: 31955018 DOI: 10.1016/j.colsurfb.2020.110789] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/06/2020] [Accepted: 01/08/2020] [Indexed: 10/25/2022]
Abstract
Liposomes are of great interest and importance in tumor imaging, since they can greatly improve the imaging sensitivity and specificity by increasing the accumulation of contrast agents. Still, most liposome-based probes have high background signals during blood circulation, which limits enhancement of S/B ratio and tumor imaging sensitivity. To enhance the S/B ratio of tumor imaging, we construct a fluorescence resonance energy transfer (FRET) and aggregation induced emission (AIE) based liposomal fluorescence probe TPE/BHQ-lipo with excellent FRET effect (99 %) and great fluorescence enhancement upon liposome rupture (120-fold) as well as efficient fluorescence recovery in tumor cell imaging. Finally, we used the TPE/BHQ-lipo to image 4T1 tumor upon intravenous injection of liposomes and the group showed enhanced signal to background ratio of 4.1, compared to 1.8 from control AIE-based liposomal group (TPE-lipo). Our work offers an excellent FRET and AIE-based liposomal probe for high-sensitive tumor imaging.
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Affiliation(s)
- Yuqiong Xia
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China.
| | - Chunzhong Xu
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China
| | - Xianghan Zhang
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China
| | - Jingkai Gao
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China
| | - Yankun Wu
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China
| | - Cairu Li
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China
| | - Zhongliang Wang
- Engineering Research Center of Molecular- and Neuro-imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China.
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Zhang C, Liu J, Guo H, Wang W, Xu M, Tan Y, Huang T, Cao Z, Shuai X, Xie X. Theranostic Nanomedicine Carrying L-Menthol and Near-Infrared Dye for Multimodal Imaging-Guided Photothermal Therapy of Cancer. Adv Healthc Mater 2019; 8:e1900409. [PMID: 31148393 DOI: 10.1002/adhm.201900409] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/05/2019] [Indexed: 12/20/2022]
Abstract
Photothermal therapy (PTT) as an emerging technique for cancer treatment has drawn great attention owing to its minimally invasive nature. However, it is difficult to achieve a complete tumor regression due to the heterogeneous heat distribution over the tumor. Application of photothermal conversion agents may enhance PTT efficiency, and a multifunctional imaging may provide guidance for the implementation of PTT. Herein, an L-menthol/IR-780 loaded liposome (MIL) is prepared to achieve NIR-triggered cavitation for enhancing photothermal ablation. The synthesized MIL possesses outstanding colloidal stability and photoacoustic/near infrared fluorescence/ultrasound (PA/NIRF/US) imaging contrast to offer multimodal imaging-guided photothermal therapy of cancer. Upon irradiation, the IR-780 acts as the photoabsorber to convert NIR light into heat energy. More importantly, the produced hyperthermia can not only induce ablation of tumor cells but also trigger vaporization and bubbling of encapsulated L-menthol (menthol). Consequently, the generated menthol bubbles obviously enhance the US imaging signal and promote photothermal ablation of the tumor.
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Affiliation(s)
- Chunyang Zhang
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
| | - Jie Liu
- School of Biomedical EngineeringSun Yat‐Sen University Guangzhou Guangdong 510006 China
| | - Huanling Guo
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
| | - Wei Wang
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
| | - Ming Xu
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
| | - Yang Tan
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
| | - Tongyi Huang
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
| | - Zhong Cao
- School of Biomedical EngineeringSun Yat‐Sen University Guangzhou Guangdong 510006 China
| | - Xintao Shuai
- PCFM Lab of Ministry of EducationSchool of Chemistry and Chemical EngineeringSun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Xiaoyan Xie
- Department of Medical UltrasoundInstitute of Diagnostic and Interventional UltrasoundFirst Affiliated HospitalSun Yat‐Sen University Guangzhou Guangdong 510080 China
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