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Tripathi G, Guha L, Kumar H. Seeing the unseen: The role of bioimaging techniques for the diagnostic interventions in intervertebral disc degeneration. Bone Rep 2024; 22:101784. [PMID: 39040156 PMCID: PMC11261287 DOI: 10.1016/j.bonr.2024.101784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 06/19/2024] [Accepted: 06/24/2024] [Indexed: 07/24/2024] Open
Abstract
Intervertebral Disc Degeneration is a pathophysiological condition that primarily affects the spinal discs, causing back pain and neurological deficits. It is caused by the contribution of several factors such as genetic predisposition, age-related degeneration, and lifestyle choices like obesity and physical activity. Even though there are medications to treat pain, there is a lack of medicines for a complete cure. The main difficulty lies in poor diagnosis of the morphological and functional changes in the disc. With the ever-increasing research on bioimaging techniques, new techniques are being developed and repurposed to evaluate disc shape and composition, and their defects like thinning or deformities on the disc, leading to the proper diagnostic intervention in intervertebral disc degeneration. In this review, we aim to present a comprehensive overview of the imaging techniques used in the pre-clinical and clinical stages for the diagnosis of intervertebral disc degeneration. First, we will discuss about patho-anatomy and the pathophysiology of degenerative disc disease with the significance and a brief description of various dyes and tracers utilized for bioimaging. Then we will shed light on the latest advancements in diagnostic modalities in intervertebral disc degeneration; concluded by an analysis of the repercussions of the methodologies and experimental systems employed in identifying mechanisms and developing therapeutic strategies in intervertebral disc degeneration.
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Affiliation(s)
- Gyanoday Tripathi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education And Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Lahanya Guha
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education And Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Hemant Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education And Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
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2
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Baniasadi A, Das JP, Prendergast CM, Beizavi Z, Ma HY, Jaber MY, Capaccione KM. Imaging at the nexus: how state of the art imaging techniques can enhance our understanding of cancer and fibrosis. J Transl Med 2024; 22:567. [PMID: 38872212 PMCID: PMC11177383 DOI: 10.1186/s12967-024-05379-1] [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: 02/11/2024] [Accepted: 06/06/2024] [Indexed: 06/15/2024] Open
Abstract
Both cancer and fibrosis are diseases involving dysregulation of cell signaling pathways resulting in an altered cellular microenvironment which ultimately leads to progression of the condition. The two disease entities share common molecular pathophysiology and recent research has illuminated the how each promotes the other. Multiple imaging techniques have been developed to aid in the early and accurate diagnosis of each disease, and given the commonalities between the pathophysiology of the conditions, advances in imaging one disease have opened new avenues to study the other. Here, we detail the most up-to-date advances in imaging techniques for each disease and how they have crossed over to improve detection and monitoring of the other. We explore techniques in positron emission tomography (PET), magnetic resonance imaging (MRI), second generation harmonic Imaging (SGHI), ultrasound (US), radiomics, and artificial intelligence (AI). A new diagnostic imaging tool in PET/computed tomography (CT) is the use of radiolabeled fibroblast activation protein inhibitor (FAPI). SGHI uses high-frequency sound waves to penetrate deeper into the tissue, providing a more detailed view of the tumor microenvironment. Artificial intelligence with the aid of advanced deep learning (DL) algorithms has been highly effective in training computer systems to diagnose and classify neoplastic lesions in multiple organs. Ultimately, advancing imaging techniques in cancer and fibrosis can lead to significantly more timely and accurate diagnoses of both diseases resulting in better patient outcomes.
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Affiliation(s)
- Alireza Baniasadi
- Department of Radiology, Columbia University Irving Medical Center, 622 W 168Th Street, New York, NY, 10032, USA.
| | - Jeeban P Das
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Conor M Prendergast
- Department of Radiology, Columbia University Irving Medical Center, 622 W 168Th Street, New York, NY, 10032, USA
| | - Zahra Beizavi
- Department of Radiology, Columbia University Irving Medical Center, 622 W 168Th Street, New York, NY, 10032, USA
| | - Hong Y Ma
- Department of Radiology, Columbia University Irving Medical Center, 622 W 168Th Street, New York, NY, 10032, USA
| | | | - Kathleen M Capaccione
- Department of Radiology, Columbia University Irving Medical Center, 622 W 168Th Street, New York, NY, 10032, USA
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3
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Camli B, Andrus L, Roy A, Mishra B, Xu C, Georgakoudi I, Tkaczyk T, Ben-Yakar A. Two photon imaging probe with highly efficient autofluorescence collection at high scattering and deep imaging conditions. BIOMEDICAL OPTICS EXPRESS 2024; 15:3163-3182. [PMID: 38855663 PMCID: PMC11161376 DOI: 10.1364/boe.520729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/05/2024] [Accepted: 04/06/2024] [Indexed: 06/11/2024]
Abstract
In this paper, we present a 2-photon imaging probe system featuring a novel fluorescence collection method with improved and reliable efficiency. The system aims to miniaturize the potential of 2-photon imaging in the metabolic and morphological characterization of cervical tissue at sub-micron resolution over large imaging depths into a flexible and clinically viable platform towards the early detection of cancers. Clinical implementation of such a probe system is challenging due to inherently low levels of autofluorescence, particularly when imaging deep in highly scattering tissues. For an efficient collection of fluorescence signals, our probe employs 12 0.5 NA collection fibers arranged around a miniaturized excitation objective. By bending and terminating a multitude of collection fibers at a specific angle, we increase collection area and directivity significantly. Positioning of these fibers allows the collection of fluorescence photons scattered away from their ballistic trajectory multiple times, which offers a system collection efficiency of 4%, which is 55% of what our bench-top microscope with 0.75 NA objective achieves. We demonstrate that the collection efficiency is largely maintained even at high scattering conditions and high imaging depths. Radial symmetry of arrangement maintains uniformity of collection efficiency across the whole FOV. Additionally, our probe can image at different tissue depths via axial actuation by a dc servo motor, allowing depth dependent tissue characterization. We designed our probe to perform imaging at 775 nm, targeting 2-photon autofluorescence from NAD(P)H and FAD molecules, which are often used in metabolic tissue characterization. An air core photonic bandgap fiber delivers laser pulses of 100 fs duration to the sample. A miniaturized objective designed with commercially available lenses of 3 mm diameter focuses the laser beam on tissue, attaining lateral and axial imaging resolutions of 0.66 µm and 4.65 µm, respectively. Characterization results verify that our probe achieves collection efficiency comparable to our optimized bench-top 2-photon imaging microscope, minimally affected by imaging depth and radial positioning. We validate autofluorescence imaging capability with excised porcine vocal fold tissue samples. Images with 120 µm FOV and 0.33 µm pixel sizes collected at 2 fps confirm that the 300 µm imaging depth was achieved.
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Affiliation(s)
- Berk Camli
- Department of Mechanical Engineering, UT Austin, Austin, Texas, USA
| | - Liam Andrus
- Department of Biomedical Engineering, UT Austin, Austin, Texas, USA
| | - Aditya Roy
- Department of Mechanical Engineering, UT Austin, Austin, Texas, USA
| | - Biswajit Mishra
- Department of Mechanical Engineering, UT Austin, Austin, Texas, USA
| | - Chris Xu
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York, USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
| | - Tomasz Tkaczyk
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Adela Ben-Yakar
- Department of Mechanical Engineering, UT Austin, Austin, Texas, USA
- Department of Biomedical Engineering, UT Austin, Austin, Texas, USA
- Department of Electrical and Computer Engineering, UT Austin, Austin, Texas, USA
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4
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Xing Y, Chen R, Zhang L, Chen Y, Zhang S, Diao X, Liu Y, Shi Y, Wei Z, Chang G. SLAM medical imaging enabled by pre-chirp and gain jointly managed Yb-fiber laser. BIOMEDICAL OPTICS EXPRESS 2024; 15:911-923. [PMID: 38404349 PMCID: PMC10890883 DOI: 10.1364/boe.506915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/14/2023] [Accepted: 01/02/2024] [Indexed: 02/27/2024]
Abstract
We demonstrate a pre-chirp and gain jointly managed Yb-fiber laser that drives simultaneous label-free autofluorescence-multiharmonic (SLAM) medical imaging. We show that a gain managed Yb-fiber amplifier produces high-quality compressed pulses when the seeding pulses exhibit proper negative pre-chirp. The resulting laser source can generate 43-MHz, 34-fs pulses centered at 1110 nm with more than 90-nJ energy. We apply this ultrafast source to SLAM imaging of cellular and extracellular components in various human tissues of intestinal adenocarcinoma, lung adenocarcinoma, and liver.
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Affiliation(s)
- Yuting Xing
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Runzhi Chen
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lihao Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yaobing Chen
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shu Zhang
- The Center for Biomedical Research, Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xincai Diao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yishi Shi
- University of Chinese Academy of Sciences, Beijing 100049, China
- The Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
| | - Zhiyi Wei
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Guoqing Chang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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5
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Knapp T, Lima N, Daigle N, Duan S, Merchant JL, Sawyer TW. Combined flat-field and frequency filter approach to correcting artifacts of multichannel two-photon microscopy. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:016007. [PMID: 38264434 PMCID: PMC10804314 DOI: 10.1117/1.jbo.29.1.016007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 10/10/2023] [Accepted: 12/26/2023] [Indexed: 01/25/2024]
Abstract
Significance Multiphoton microscopy (MPM) is a useful biomedical imaging tool for its ability to probe labeled and unlabeled depth-resolved tissue biomarkers at high resolution. Automated MPM tile scanning allows for whole-slide image acquisition but can suffer from tile-stitching artifacts that prevent accurate quantitative data analysis. Aim We have investigated postprocessing artifact correction methods using ImageJ macros and custom Python code. Quantitative and qualitative comparisons of these methods were made using whole-slide MPM autofluorescence and second-harmonic generation images of human duodenal tissue. Approach Image quality after artifact removal is assessed by evaluating the processed image and its unprocessed counterpart using the root mean square error, structural similarity index, and image histogram measurements. Results Consideration of both quantitative and qualitative results suggest that a combination of a custom flat-field-based correction and frequency filtering processing step provide improved artifact correction when compared with each method used independently to correct for tiling artifacts of tile-scan MPM images. Conclusions While some image artifacts remain with these methods, further optimization of these processing steps may result in computational-efficient methods for removing these artifacts that are ubiquitous in large-scale MPM imaging. Removal of these artifacts with retention of the original image information would facilitate the use of this imaging modality in both research and clinical settings, where it is highly useful in collecting detailed morphologic and optical properties of tissue.
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Affiliation(s)
- Thomas Knapp
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona, United States
| | - Natzem Lima
- University of Arizona, Wyant College of Optical Sciences, Tucson, Arizona, United States
| | - Noelle Daigle
- University of Arizona, Wyant College of Optical Sciences, Tucson, Arizona, United States
| | - Suzann Duan
- University of Arizona, College of Medicine, Tucson, Arizona, United States
| | | | - Travis W. Sawyer
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona, United States
- University of Arizona, Wyant College of Optical Sciences, Tucson, Arizona, United States
- University of Arizona, College of Medicine, Tucson, Arizona, United States
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6
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Han Q, Erasmus SW, Bader A, Fryganas C, Elliott CT, van Ruth SM. Fluorescence lifetime imaging microscopy as a tool to characterize spice powder variations for quality and authenticity purposes: A ginger case study. Food Res Int 2024; 176:113792. [PMID: 38163706 DOI: 10.1016/j.foodres.2023.113792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/23/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
Spices are usually ground for applications and the resulting particle size of the powders is an important product attribute in view of the release of flavour. However, inhomogeneity of the original material may lead to variations in the physicochemical characteristics of the particles. This variation and its linkage to particle size may be examined by particular imaging techniques. This study aimed to explore the potential of Fluorescence Lifetime Imaging Microscopy (FLIM) to characterize spice powders according to particle size variations and correlation with their pigment contents to reveal the chemical information contained within the FLIM data. Ginger powder was used as a representative powder model. The FLIM profiles of the individual samples and populations revealed that FLIM coupled with the phasor approach has the capacity to characterize spice powder according to particle size. Meanwhile, Principal Component Analysis of pre-processed FLIM data revealed clustering of particle size groups. Further correlation analysis between the pigment compound contents and FLIM data of the ginger powders indicated that FLIM reflected chemical information of ginger powder and was able to visualize endogenous fluorophores. The current study revealed the potential of FLIM to characterize ginger powder particles. This approach may be extrapolated to other spice powder products. The new knowledge is a step further in paving the way for the application of innovative techniques, already prevalent in other domains, to food quality and authentication.
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Affiliation(s)
- Qing Han
- Food Quality and Design Group, Wageningen University & Research, P.O. Box 17, 6700 AA, Wageningen, the Netherlands; Institute for Global Food Security, Biological Sciences, 19 Chlorine Gardens, Queen's University Belfast, BT9 5DL, Belfast, Northern Ireland, United Kingdom
| | - Sara W Erasmus
- Food Quality and Design Group, Wageningen University & Research, P.O. Box 17, 6700 AA, Wageningen, the Netherlands
| | - Arjen Bader
- Department of Agrotechnology and Food Sciences, Wageningen University & Research, 6708 PB, Wageningen, the Netherlands
| | - Christos Fryganas
- Food Quality and Design Group, Wageningen University & Research, P.O. Box 17, 6700 AA, Wageningen, the Netherlands
| | - Christopher T Elliott
- Institute for Global Food Security, Biological Sciences, 19 Chlorine Gardens, Queen's University Belfast, BT9 5DL, Belfast, Northern Ireland, United Kingdom; School of Food Science and Technology, Faculty of Science and Technology, Thammasat University, 99 Mhu 18, Phahonyothin Road, Khong Luang, Pathum Thani 12120, Thailand
| | - Saskia M van Ruth
- Food Quality and Design Group, Wageningen University & Research, P.O. Box 17, 6700 AA, Wageningen, the Netherlands; Institute for Global Food Security, Biological Sciences, 19 Chlorine Gardens, Queen's University Belfast, BT9 5DL, Belfast, Northern Ireland, United Kingdom; School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland.
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7
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Bukhari SSAS, Halder A, Lindinger A. Polarization enhanced two-photon excited fluorescence contrast by shaped laser pulses using a deformable phase plate. APPLIED OPTICS 2023; 62:8242-8247. [PMID: 38037926 DOI: 10.1364/ao.503531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/05/2023] [Indexed: 12/02/2023]
Abstract
We utilize spatially and temporally tailored laser pulses for polarization enhanced two-photon excited fluorescence contrasts of dyes. The shaped laser pulses are produced by first passing through a temporal pulse shaper and then through a two-dimensional spatial pulse shaper with deformable phase plates. Different spatial beam profiles are presented that demonstrate the potential of the spatial pulse shaper. Particularly, a polarization enhanced fluorescence contrast between two dyes is reported by utilizing specific phase shaping in perpendicular polarization directions. The tailored laser pulses are further modified by the deformable phase plate, and a polarization increased depth-dependent contrast is achieved. This spatial shaping for all polarization directions demonstrates the advantage of deformable phase plate spatial shapers compared to liquid crystals, where only one polarization direction can spatially be modified. The described polarization contrast method allows for three-dimensional scanning of probes and provides perspectives for biophotonic applications.
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8
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Fésűs L, Kiss N, Farkas K, Plázár D, Pálla S, Navasiolava N, Róbert L, Wikonkál NM, Martin L, Medvecz M. Correlation of systemic involvement and presence of pathological skin calcification assessed by ex vivo nonlinear microscopy in Pseudoxanthoma elasticum. Arch Dermatol Res 2023; 315:1897-1908. [PMID: 36847829 PMCID: PMC10366029 DOI: 10.1007/s00403-023-02557-x] [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: 02/09/2022] [Revised: 12/24/2022] [Accepted: 01/28/2023] [Indexed: 03/01/2023]
Abstract
Pseudoxanthoma elasticum (PXE (OMIM 264800)) is an autosomal recessive connective tissue disorder mainly caused by mutations in the ABCC6 gene. PXE results in ectopic calcification primarily in the skin, eye and blood vessels that can lead to blindness, peripheral arterial disease and stroke. Previous studies found correlation between macroscopic skin involvement and severe ophthalmological and cardiovascular complications. This study aimed to investigate correlation between skin calcification and systemic involvement in PXE. Ex vivo nonlinear microscopy (NLM) imaging was performed on formalin fixed, deparaffinized, unstained skin sections to assess the extent of skin calcification. The area affected by calcification (CA) in the dermis and density of calcification (CD) was calculated. From CA and CD, calcification score (CS) was determined. The number of affected typical and nontypical skin sites were counted. Phenodex + scores were determined. The relationship between the ophthalmological, cerebro- and cardiovascular and other systemic complications and CA, CD and CS, respectively, and skin involvement were analyzed. Regression models were built for adjustment to age and sex. We found significant correlation of CA with the number of affected typical skin sites (r = 0.48), the Phenodex + score (r = 0.435), extent of vessel involvement (V-score) (r = 0.434) and disease duration (r = 0.48). CD correlated significantly with V-score (r = 0.539). CA was significantly higher in patients with more severe eye (p = 0.04) and vascular (p = 0.005) complications. We found significantly higher CD in patients with higher V-score (p = 0.018), and with internal carotid artery hypoplasia (p = 0.045). Significant correlation was found between higher CA and the presence of macula atrophy (β = - 0.44, p = 0.032) and acneiform skin changes (β = 0.40, p = 0.047). Based on our results, the assessment of skin calcification pattern with nonlinear microscopy in PXE may be useful for clinicians to identify PXE patients who develop severe systemic complications.
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Affiliation(s)
- Luca Fésűs
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Norbert Kiss
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Klára Farkas
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Dóra Plázár
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Sára Pálla
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Nastassia Navasiolava
- PXE National Reference Centre, Angers University Hospital, 4 Rue Larrey, 49100, Angers, France
| | - Lili Róbert
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Norbert M Wikonkál
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary
| | - Ludovic Martin
- PXE National Reference Centre, Angers University Hospital, 4 Rue Larrey, 49100, Angers, France
| | - Márta Medvecz
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Mária Street 41, Budapest, 1085, Hungary.
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9
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Song J, Kang J, Kang U, Nam HS, Kim HJ, Kim RH, Kim JW, Yoo H. SNR enhanced high-speed two-photon microscopy using a pulse picker and time gating detection. Sci Rep 2023; 13:14244. [PMID: 37648768 PMCID: PMC10468500 DOI: 10.1038/s41598-023-41270-7] [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: 01/20/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023] Open
Abstract
Two-photon microscopy (TPM) is an attractive biomedical imaging method due to its large penetration depth and optical sectioning capability. In particular, label-free autofluorescence imaging offers various advantages for imaging biological samples. However, relatively low intensity of autofluorescence leads to low signal-to-noise ratio (SNR), causing practical challenges for imaging biological samples. In this study, we present TPM using a pulse picker to utilize low pulse repetition rate of femtosecond pulsed laser to increase the pulse peak power of the excitation source leading to higher emission of two-photon fluorescence with the same average illumination power. Stronger autofluorescence emission allowed us to obtain higher SNR images of arterial and liver tissues. In addition, by applying the time gating detection method to the pulse signals obtained by TPM, we were able to significantly reduce the background noise of two-photon images. As a result, our TPM system using the pulsed light source with a 19 times lower repetition rate allowed us to obtain the same SNR image more than 19 times faster with the same average power. Although high pulse energy can increase the photobleaching, we also observed that high-speed imaging with low total illumination energy can mitigate the photobleaching effect to a level similar to that of conventional illumination with a high repetition rate. We anticipate that this simple approach will provide guidance for SNR enhancement with high-speed imaging in TPM as well as other nonlinear microscopy.
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Affiliation(s)
- Jeonggeun Song
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Daejeon, 34141, South Korea
| | - Juehyung Kang
- Department of Biomedical Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea
| | - Ungyo Kang
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Daejeon, 34141, South Korea
| | - Hyeong Soo Nam
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Daejeon, 34141, South Korea
| | - Hyun Jung Kim
- Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Seoul, 08308, South Korea
| | - Ryeong Hyeon Kim
- Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Seoul, 08308, South Korea
| | - Jin Won Kim
- Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Seoul, 08308, South Korea
| | - Hongki Yoo
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Daejeon, 34141, South Korea.
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10
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Peterson T, Mann S, Sun BL, Peng L, Cai H, Liang R. Motionless volumetric structured light sheet microscopy. BIOMEDICAL OPTICS EXPRESS 2023; 14:2209-2224. [PMID: 37206125 PMCID: PMC10191636 DOI: 10.1364/boe.489280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/11/2023] [Accepted: 04/11/2023] [Indexed: 05/21/2023]
Abstract
To meet the increasing need for low-cost, compact imaging technology with cellular resolution, we have developed a microLED-based structured light sheet microscope for three-dimensional ex vivo and in vivo imaging of biological tissue in multiple modalities. All the illumination structure is generated directly at the microLED panel-which serves as the source-so light sheet scanning and modulation is completely digital, yielding a system that is simpler and less prone to error than previously reported methods. Volumetric images with optical sectioning are thus achieved in an inexpensive, compact form factor without any moving parts. We demonstrate the unique properties and general applicability of our technique by ex vivo imaging of porcine and murine tissue from the gastrointestinal tract, kidney, and brain.
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Affiliation(s)
- Tyler Peterson
- Wyant College of Optical Sciences,
The University of Arizona, Tucson, Arizona 85721, USA
| | - Shivani Mann
- Department of Neuroscience, The University of Arizona, Tucson, Arizona 85721, USA
| | - Belinda L. Sun
- Department of Pathology, College of Medicine, The University of Arizona, Tucson, Arizona 85721, USA
| | - Leilei Peng
- Wyant College of Optical Sciences,
The University of Arizona, Tucson, Arizona 85721, USA
| | - Haijiang Cai
- Department of Neuroscience, The University of Arizona, Tucson, Arizona 85721, USA
| | - Rongguang Liang
- Wyant College of Optical Sciences,
The University of Arizona, Tucson, Arizona 85721, USA
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11
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Nelson MS, Liu Y, Wilson HM, Li B, Rosado-Mendez IM, Rogers JD, Block WF, Eliceiri KW. Multiscale Label-Free Imaging of Fibrillar Collagen in the Tumor Microenvironment. Methods Mol Biol 2023; 2614:187-235. [PMID: 36587127 DOI: 10.1007/978-1-0716-2914-7_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
With recent advances in cancer therapeutics, there is a great need for improved imaging methods for characterizing cancer onset and progression in a quantitative and actionable way. Collagen, the most abundant extracellular matrix protein in the tumor microenvironment (and the body in general), plays a multifaceted role, both hindering and promoting cancer invasion and progression. Collagen deposition can defend the tumor with immunosuppressive effects, while aligned collagen fiber structures can enable tumor cell migration, aiding invasion and metastasis. Given the complex role of collagen fiber organization and topology, imaging has been a tool of choice to characterize these changes on multiple spatial scales, from the organ and tumor scale to cellular and subcellular level. Macroscale density already aids in the detection and diagnosis of solid cancers, but progress is being made to integrate finer microscale features into the process. Here we review imaging modalities ranging from optical methods of second harmonic generation (SHG), polarized light microscopy (PLM), and optical coherence tomography (OCT) to the medical imaging approaches of ultrasound and magnetic resonance imaging (MRI). These methods have enabled scientists and clinicians to better understand the impact collagen structure has on the tumor environment, at both the bulk scale (density) and microscale (fibrillar structure) levels. We focus on imaging methods with the potential to both examine the collagen structure in as natural a state as possible and still be clinically amenable, with an emphasis on label-free strategies, exploiting intrinsic optical properties of collagen fibers.
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Affiliation(s)
- Michael S Nelson
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Yuming Liu
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA
| | - Helen M Wilson
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Bin Li
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.,Morgridge Institute for Research, Madison, WI, USA
| | - Ivan M Rosado-Mendez
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Jeremy D Rogers
- Morgridge Institute for Research, Madison, WI, USA.,McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA
| | - Walter F Block
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Kevin W Eliceiri
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA. .,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA. .,Morgridge Institute for Research, Madison, WI, USA. .,Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA. .,McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA.
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12
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Gottschalk R, Lindinger A. Temporally shaped vortex phase laser pulses for two-photon excited fluorescence. APPLIED OPTICS 2022; 61:10207-10213. [PMID: 36606782 DOI: 10.1364/ao.473744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
We report temporally shaped vortex phase laser pulses for two-photon excited fluorescence of dyes. The particularly tailored pulses are generated by first utilizing a temporal pulse shaper and subsequently a two-dimensional spatial pulse shaper. Various vortex phase shaped structures are demonstrated by combining different two-dimensional phase patterns. Moreover, perpendicular polarization components are used to achieve an enhanced radial two-photon excited fluorescence contrast by applying third order phase functions on the temporal pulse shaper. Particularly, the spatial fluorescence structure is modulated with a combination of Gaussian and vortex phase shaped pulses by modifying only the phase on the temporal modulator. Thereby, interference structures with high spatial resolution arise. The introduced method to generate temporally shaped vortex phase tailored pulses will provide new perspectives for biophotonic applications.
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13
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Leben R, Lindquist RL, Hauser AE, Niesner R, Rakhymzhan A. Two-Photon Excitation Spectra of Various Fluorescent Proteins within a Broad Excitation Range. Int J Mol Sci 2022; 23:13407. [PMID: 36362194 PMCID: PMC9656010 DOI: 10.3390/ijms232113407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 03/26/2024] Open
Abstract
Two-photon excitation fluorescence laser-scanning microscopy is the preferred method for studying dynamic processes in living organ models or even in living organisms. Thanks to near-infrared and infrared excitation, it is possible to penetrate deep into the tissue, reaching areas of interest relevant to life sciences and biomedicine. In those imaging experiments, two-photon excitation spectra are needed to select the optimal laser wavelength to excite as many fluorophores as possible simultaneously in the sample under consideration. The more fluorophores that can be excited, and the more cell populations that can be studied, the better access to their arrangement and interaction can be reached in complex systems such as immunological organs. However, for many fluorophores, the two-photon excitation properties are poorly predicted from the single-photon spectra and are not yet available, in the literature or databases. Here, we present the broad excitation range (760 nm to 1300 nm) of photon-flux-normalized two-photon spectra of several fluorescent proteins in their cellular environment. This includes the following fluorescent proteins spanning from the cyan to the infrared part of the spectrum: mCerulean3, mTurquoise2, mT-Sapphire, Clover, mKusabiraOrange2, mOrange2, LSS-mOrange, mRuby2, mBeRFP, mCardinal, iRFP670, NirFP, and iRFP720.
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Affiliation(s)
- Ruth Leben
- Biophysical Analytics, Deutsches Rheuma-Forschungszentrum (DRFZ), 10117 Berlin, Germany
- Institute of Immunology, Center for Infection Medicine, Freie Universität Berlin, 14163 Berlin, Germany
| | - Randall L. Lindquist
- Immune Dynamics and Intravital Microscopy, Deutsches Rheuma-Forschungszentrum (DRFZ), 10117 Berlin, Germany
- Praxen für Nuklearmedizin, 12163 Berlin, Germany
| | - Anja E. Hauser
- Immune Dynamics and Intravital Microscopy, Deutsches Rheuma-Forschungszentrum (DRFZ), 10117 Berlin, Germany
- Rheumatology and Clinical Immunology, Charité–Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Raluca Niesner
- Biophysical Analytics, Deutsches Rheuma-Forschungszentrum (DRFZ), 10117 Berlin, Germany
- Dynamic and Functional In Vivo Imaging, Freie Universität Berlin, 14163 Berlin, Germany
| | - Asylkhan Rakhymzhan
- Biophysical Analytics, Deutsches Rheuma-Forschungszentrum (DRFZ), 10117 Berlin, Germany
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14
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Potapov AL, Sirotkina MA, Matveev LA, Dudenkova VV, Elagin VV, Kuznetsov SS, Karabut MM, Komarova AD, Vagapova NN, Safonov IK, Kuznetsova IA, Radenska-Lopovok SG, Zagaynova EV, Gladkova ND. Multiphoton microscopy assessment of the structure and variability changes of dermal connective tissue in vulvar lichen sclerosus: A pilot study. JOURNAL OF BIOPHOTONICS 2022; 15:e202200036. [PMID: 35652856 DOI: 10.1002/jbio.202200036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/17/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
In this article, we offer a novel classification of progressive changes in the connective tissue of dermis in vulvar lichen sclerosus (VLS) relying on quantitative assessment of the second harmonic generation (SHG) signal received from formalin fixed and deparaffinized tissue sections. We formulate criteria for distinguishing four degrees of VLS development: Initial-Mild-Moderate-Severe. Five quantitative characteristics (length and thickness type I Collagen fibers, Mean SHG signal intensity, Skewness and Coherence SHG signal) are used to describe the sequential degradation of connective tissue (changes in the structure, orientation, shape and density of collagen fibers) up to the formation of specific homogeneous masses. Each of the degrees has a characteristic set of quantitatively expressed features. We focus on the identification and description of early, initial changes of the dermis as the least specific. The results obtained by us and the proposed classification of the degrees of the disease can be used to objectify the dynamics of tissue changes during treatment.
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Affiliation(s)
| | | | - Lev A Matveev
- Institute of Applied Physics Russian Academy of Sciences, Nizhny Novgorod, Russia
| | | | - Vadim V Elagin
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
| | - Sergey S Kuznetsov
- N.A. Semashko Nizhny Novgorod Regional Clinical Hospital, Nizhny Novgorod, Russia
| | - Maria M Karabut
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
| | - Anastasia D Komarova
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Nailya N Vagapova
- N.A. Semashko Nizhny Novgorod Regional Clinical Hospital, Nizhny Novgorod, Russia
| | - Ivan K Safonov
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
| | - Irina A Kuznetsova
- N.A. Semashko Nizhny Novgorod Regional Clinical Hospital, Nizhny Novgorod, Russia
| | | | - Elena V Zagaynova
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
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15
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Ghomashchi S, Clement A, Whyne CM, Akens MK. Establishment and Image based evaluation of a New Preclinical Rat Model of Osteoblastic Bone Metastases. Clin Exp Metastasis 2022; 39:833-840. [PMID: 35819644 DOI: 10.1007/s10585-022-10175-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/08/2022] [Indexed: 11/28/2022]
Abstract
Bone remodeling is disrupted in the presence of metastases and can present as osteolytic, osteoblastic or a mixture of the two. Established rat models of osteolytic and mixed metastases have been identified changes in structural and tissue-level properties of bone. The aim of this work was to establish a preclinical rat model of osteoblastic metastases and characterize bone quality changes through image-based evaluation. Female athymic rats (n = 22) were inoculated with human breast cancer cells ZR-75-1 and tumor development tracked over 3-4 months with bioluminescence and in-vivo µCT imaging. Bone tissue-level stereological features were quantified on ex-vivo µCT imaging. Histopathology verified the presence of osteoblastic bone. Bone mineral density distribution was assessed via backscattered electron microscopy. Newly formed osteoblastic bone was associated with reduced mineral content and increased heterogeneity leading to an overall degraded bone quality. Characterizing changes in osteoblastic bone properties is relevant to pre-clinical therapeutic testing and treatment planning.
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Affiliation(s)
- Soroush Ghomashchi
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Allison Clement
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Cari M Whyne
- Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Surgery, University of Toronto, 101 College Street, Rm 15-311, M5G 1L7, Toronto, ON, Canada
| | - Margarete K Akens
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada. .,Department of Surgery, University of Toronto, 101 College Street, Rm 15-311, M5G 1L7, Toronto, ON, Canada. .,Techna Institute, University Health Network, 101 College Street, Rm 15-311, M5G 1L7, Toronto, ON, Canada.
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16
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Computer-Aided Detection of Quantitative Signatures for Breast Fibroepithelial Tumors Using Label-Free Multi-Photon Imaging. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103340. [PMID: 35630817 PMCID: PMC9144626 DOI: 10.3390/molecules27103340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 11/17/2022]
Abstract
Fibroadenomas (FAs) and phyllodes tumors (PTs) are major benign breast tumors, pathologically classified as fibroepithelial tumors. Although the clinical management of PTs differs from FAs, distinction by core needle biopsy diagnoses is still challenging. Here, a combined technique of label-free imaging with multi-photon microscopy and artificial intelligence was applied to detect quantitative signatures that differentiate fibroepithelial lesions. Multi-photon excited autofluorescence and second harmonic generation (SHG) signals were detected in tissue sections. A pixel-wise semantic segmentation method using a deep learning framework was used to separate epithelial and stromal regions automatically. The epithelial to stromal area ratio and the collagen SHG signal strength were investigated for their ability to distinguish fibroepithelial lesions. An image segmentation analysis with a pixel-wise semantic segmentation framework using a deep convolutional neural network showed the accurate separation of epithelial and stromal regions. A further investigation, to determine if scoring the epithelial to stromal area ratio and the SHG signal strength within the stromal area could be a marker for differentiating fibroepithelial tumors, showed accurate classification. Therefore, molecular and morphological changes, detected through the assistance of computational and label-free multi-photon imaging techniques, enable us to propose quantitative signatures for epithelial and stromal alterations in breast tissues.
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17
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Abstract
Fluorescence microscopy has represented a crucial technique to explore the cellular and molecular mechanisms in the field of biomedicine. However, the conventional one-photon microscopy exhibits many limitations when living samples are imaged. The new technologies, including two-photon microscopy (2PM), have considerably improved the in vivo study of pathophysiological processes, allowing the investigators to overcome the limits displayed by previous techniques. 2PM enables the real-time intravital imaging of the biological functions in different organs at cellular and subcellular resolution thanks to its improved laser penetration and less phototoxicity. The development of more sensitive detectors and long-wavelength fluorescent dyes as well as the implementation of semi-automatic software for data analysis allowed to gain insights in essential physiological functions, expanding the frontiers of cellular and molecular imaging. The future applications of 2PM are promising to push the intravital microscopy beyond the existing limits. In this review, we provide an overview of the current state-of-the-art methods of intravital microscopy, focusing on the most recent applications of 2PM in kidney physiology.
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18
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Lee J, Kim JG, Hong S, Kim YS, Ahn S, Kim R, Chun H, Park KD, Jeong Y, Kim DE, Lee CJ, Ku T, Kim P. Longitudinal intravital imaging of cerebral microinfarction reveals a dynamic astrocyte reaction leading to glial scar formation. Glia 2022; 70:975-988. [PMID: 35106851 DOI: 10.1002/glia.24151] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/24/2021] [Accepted: 01/17/2022] [Indexed: 01/25/2023]
Abstract
Cerebral microinfarct increases the risk of dementia. But how microscopic cerebrovascular disruption affects the brain tissue in cellular-level are mostly unknown. Herein, with a longitudinal intravital imaging, we serially visualized in vivo dynamic cellular-level changes in astrocyte, pericyte and neuron as well as microvascular integrity after the induction of cerebral microinfarction for 1 month in mice. At day 2-3, it revealed a localized edema with acute astrocyte loss, neuronal death, impaired pericyte-vessel coverage and extravascular leakage of 3 kDa dextran (but not 2 MDa dextran) indicating microinfarction-related blood-brain barrier (BBB) dysfunction for small molecules. At day 5, the local edema disappeared with the partial restoration of microcirculation and recovery of pericyte-vessel coverage and BBB integrity. But brain tissue continued to shrink with persisted loss of astrocyte and neuron in microinfarct until 30 days, resulting in a collagen-rich fibrous scar surrounding the microinfarct. Notably, reactive astrocytes expressing glial fibrillary acidic protein (GFAP) appeared at the peri-infarct area early at day 2 and thereafter accumulated in the peri-infarct until 30 days, inducing glial scar formation in cerebral cortex. Our longitudinal intravital imaging of serial microscopic neurovascular pathophysiology in cerebral microinfarction newly revealed that astrocytes are critically susceptible to the acute microinfarction and their reactive response leads to the fibrous glial scar formation.
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Affiliation(s)
- Jingu Lee
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Joon-Goon Kim
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sujung Hong
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Young Seo Kim
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Soyeon Ahn
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Ryul Kim
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Heejung Chun
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Ki Duk Park
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Division of Bio-Med Science & Technology, KIST School, University of Science and Technology (UST), Seoul, South Korea
| | - Yong Jeong
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Dong-Eog Kim
- Department of Neurology, Dongguk University College of Medicine, Dongguk University Ilsan Hospital, Goyang, South Korea
| | - C Justin Lee
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Taeyun Ku
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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19
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Jun SW, Jang H, Kim J, Kim CS. Multiphoton excitation imaging via an actively mode-locked tunable fiber-cavity SOA laser around 800 nm. BIOMEDICAL OPTICS EXPRESS 2022; 13:525-538. [PMID: 35284185 PMCID: PMC8884227 DOI: 10.1364/boe.447010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
In this study, an active mode-locked tunable pulsed laser (AML-TPL) is proposed to excite picosecond pulsed light with a rapid wavelength tunability of approximately 800 nm for multiphoton microscopy. The AML-TPL is schematically based on a fiber-cavity semiconductor optical amplifier (SOA) configuration to implement a robust and align-free pulsed light source with a duration of 1.6 ps, a repetition rate of 27.9271 MHz, and average output power of over 600 mW. A custom-built multiphoton imaging system was also built to demonstrate the imaging performance of the proposed AML-TPL by comparing with the commercial Ti:Sapphire femtosecond laser. Two-photon excited fluorescence images were successfully acquired using a human breast cancer cell line (MDA-MB-231) stained with acridine orange.
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Affiliation(s)
- Seung Won Jun
- Ground Technology Research Institute, Agency for Defense Development, Daejeon 34186, Republic of Korea
- These authors contributed equally to this work
| | - Hansol Jang
- Department of Cogno-Mechatronics Engineering,
Pusan National University, 2 Busandaehak-ro
63 beon-gil, Busan, 46241, Republic of
Korea
- These authors contributed equally to this work
| | - Jaeheung Kim
- Department of Cogno-Mechatronics Engineering,
Pusan National University, 2 Busandaehak-ro
63 beon-gil, Busan, 46241, Republic of
Korea
| | - Chang-Seok Kim
- Department of Cogno-Mechatronics Engineering,
Pusan National University, 2 Busandaehak-ro
63 beon-gil, Busan, 46241, Republic of
Korea
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20
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Wang Y, Ma G, Gao G, Tao J, Cao W, Sun H, Ma F, Zhang Y, Wei Y, Tian M. Bioimaging of Dissolvable Microneedle Arrays: Challenges and Opportunities. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9758491. [PMID: 36034102 PMCID: PMC9368514 DOI: 10.34133/2022/9758491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 06/10/2022] [Indexed: 11/29/2022]
Abstract
The emergence of microneedle arrays (MNAs) as a novel, simple, and minimally invasive administration approach largely addresses the challenges of traditional drug delivery. In particular, the dissolvable MNAs act as a promising, multifarious, and well-controlled platform for micro-nanotransport in medical research and cosmetic formulation applications. The effective delivery mostly depends on the behavior of the MNAs penetrated into the body, and accurate assessment is urgently needed. Advanced imaging technologies offer high sensitivity and resolution visualization of cross-scale, multidimensional, and multiparameter information, which can be used as an important aid for the evaluation and development of new MNAs. The combination of MNA technology and imaging can generate considerable new knowledge in a cost-effective manner with regards to the pharmacokinetics and bioavailability of active substances for the treatment of various diseases. In addition, noninvasive imaging techniques allow rapid, receptive assessment of transdermal penetration and drug deposition in various tissues, which could greatly facilitate the translation of experimental MNAs into clinical application. Relying on the recent promising development of bioimaging, this review is aimed at summarizing the current status, challenges, and future perspective on in vivo assessment of MNA drug delivery by various imaging technologies.
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Affiliation(s)
- Yanni Wang
- Laboratory of Biologics and Biomaterials, College of Pharmacy, Zhejiang University of Technology, Hangzhou 310014, China
| | - Gehua Ma
- College of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China
| | - Guangzhi Gao
- Laboratory of Biologics and Biomaterials, College of Pharmacy, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ji Tao
- Human Phenome Institute, Fudan University, Shanghai 201203, China
| | - Wenzhao Cao
- Human Phenome Institute, Fudan University, Shanghai 201203, China
| | - Haohao Sun
- College of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Fengsen Ma
- Laboratory of Biologics and Biomaterials, College of Pharmacy, Zhejiang University of Technology, Hangzhou 310014, China
- Life Science Research Center, Frontier Crossing Institute, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yilong Zhang
- Engineering Research Center of Intelligent Sensing and System, Ministry of Education, Hangzhou 310023, China
- College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yen Wei
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, China
| | - Mei Tian
- Human Phenome Institute, Fudan University, Shanghai 201203, China
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21
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Fésűs L, Plázár D, Kolonics A, Martin L, Wikonkál N, Medvecz M, Szipőcs R. Low concentration Phloxine B staining for high chemical contrast, nonlinear microscope mosaic imaging of skin alterations in pseudoxanthoma elasticum. BIOMEDICAL OPTICS EXPRESS 2022; 13:252-261. [PMID: 35154868 PMCID: PMC8803028 DOI: 10.1364/boe.443507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/17/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Pseudoxanthoma elasticum (PXE) is an autosomal recessive metabolic disorder characterized by ectopic mineralization of soft connective tissue. Histopathology findings include fragmented, mineralized elastic fibers and calcium deposits in the mid-dermis. Nonlinear microscopy (NLM) can be used for visualization of these histopathological alterations of the mid-dermis in PXE-affected skin sections. Upon introducing a normalized 3D color vector representation of emission spectra of three of the main tissue components (collagen, elastin and calcification) we found that due to their broad, overlapping emission spectra, spectral separation of emission from elastin and calcification is practically impossible in fresh-frozen or unstained, deparaffinized PXE sections. However, we found that the application of a low concentration Phloxine B staining after the deparaffinization process creates an imaging contrast for these two tissue components, which enables spectral decomposition of their fluorescence images. The obtained concentration maps for calcium deposits can be well suited for the determination of illness severity by quantitative analysis.
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Affiliation(s)
- L. Fésűs
- Wigner RCP, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - D. Plázár
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - A. Kolonics
- Wigner RCP, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
| | - L. Martin
- PXE Reference Center (MAGEC Nord), Angers University Hospital, Angers, France
| | - N. Wikonkál
- Wigner RCP, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - M. Medvecz
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - R. Szipőcs
- Wigner RCP, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
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22
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Tosoratti E, Fisch P, Taylor S, Laurent‐Applegate LA, Zenobi‐Wong M. 3D-Printed Reinforcement Scaffolds with Targeted Biodegradation Properties for the Tissue Engineering of Articular Cartilage. Adv Healthc Mater 2021; 10:e2101094. [PMID: 34633151 DOI: 10.1002/adhm.202101094] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/20/2021] [Indexed: 01/03/2023]
Abstract
Achieving regeneration of articular cartilage is challenging due to the low healing capacity of the tissue. Appropriate selection of cell source, hydrogel, and scaffold materials are critical to obtain good integration and long-term stability of implants in native tissues. Specifically, biomechanical stability and in vivo integration can be improved if the rate of degradation of the scaffold material matches the stiffening of the sample by extracellular matrix secretion of the encapsulated cells. To this end, a novel 3D-printed lactide copolymer is presented as a reinforcement scaffold for an enzymatically crosslinked hyaluronic acid hydrogel. In this system, the biodegradable properties of the reinforced scaffold are matched to the matrix deposition of articular chondrocytes embedded in the hydrogel. The lactide reinforcement provides stability to the soft hydrogel in the early stages, allowing the composite to be directly implanted in vivo with no need for a preculture period. Compared to pure cellular hydrogels, maturation and matrix secretion remain unaffected by the reinforced scaffold. Furthermore, excellent biocompatibility and production of glycosaminoglycans and collagens are observed at all timepoints. Finally, in vivo subcutaneous implantation in nude mice shows cartilage-like tissue maturation, indicating the possibility for the use of these composite materials in one-step surgical procedures.
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Affiliation(s)
- Enrico Tosoratti
- Institute for Biomechanics Otto‐Stern‐Weg 7, ETH Zürich Zürich CH‐8093 Switzerland
| | - Philipp Fisch
- Institute for Biomechanics Otto‐Stern‐Weg 7, ETH Zürich Zürich CH‐8093 Switzerland
| | - Scott Taylor
- Poly‐Med Inc 51 Technology Drive Anderson SC 29625 USA
| | - Lee Ann Laurent‐Applegate
- Regenerative Therapy Unit Lausanne University Hospital University of Lausanne Épalinges CH‐1066 Switzerland
- Center for Applied Biotechnology and Molecular Medicine University of Zürich Zürich CH‐8057 Switzerland
| | - Marcy Zenobi‐Wong
- Institute for Biomechanics Otto‐Stern‐Weg 7, ETH Zürich Zürich CH‐8093 Switzerland
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23
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Khan A, Ramos-Gomes F, Markus A, Mietsch M, Hinkel R, Alves F. Label-free imaging of age-related cardiac structural changes in non-human primates using multiphoton nonlinear microscopy. BIOMEDICAL OPTICS EXPRESS 2021; 12:7009-7023. [PMID: 34858695 PMCID: PMC8606147 DOI: 10.1364/boe.432102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/26/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Heart failure is one of the most common causes of morbidity and mortality. Both maturational abnormalities and age-associated cardiac pathologies contribute to heart failure. Imaging-based assessment to discern detailed cardiac structure at various maturational stages is imperative for understanding mechanisms behind cardiac growth and aging. Using multiphoton nonlinear optical microscopy (NLOM) based label-free imaging, we investigated cardiac structural composition in a human-relevant aging model, the common marmoset monkey (Callithrix jacchus). Animals were divided into three different age groups including neonatal, young adult and old. By devising a unique strategy for segregating collagen and myosin emitted second harmonic generation (SHG) signals, we performed a volumetric assessment of collagen and total scattering tissue (collagen + myosin). Aged marmoset hearts exhibited an increase in collagen and total scattering tissue volume at the sites of severe tissue remodelling indicating age-related cardiac fibrosis. Significantly low scattering tissue volume in neonatal marmoset hearts was attributed to a lack of binding between the myofibrils in maturing cardiac tissue. Comprehensive quantitative assessment of structural composition during maturation and aging of marmoset hearts revealed significant differences in myofibril length, alignment, curvature and angular distribution. In conclusion, label-free high-resolution NLOM facilitates visualization and quantification of subcellular structural features for understanding vital age-related morphological alterations in the marmoset heart.
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Affiliation(s)
- Amara Khan
- Max-Planck-Institute for Experimental Medicine, Translational Molecular Imaging, Göttingen, Germany
- DZHK (German Center for Cardiovascular Research), Partner site Göttingen, 37077 Göttingen, Germany
| | - Fernanda Ramos-Gomes
- Max-Planck-Institute for Experimental Medicine, Translational Molecular Imaging, Göttingen, Germany
| | - Andrea Markus
- Max-Planck-Institute for Experimental Medicine, Translational Molecular Imaging, Göttingen, Germany
| | - Matthias Mietsch
- DZHK (German Center for Cardiovascular Research), Partner site Göttingen, 37077 Göttingen, Germany
- Laboratory Animal Science Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Rabea Hinkel
- DZHK (German Center for Cardiovascular Research), Partner site Göttingen, 37077 Göttingen, Germany
- Laboratory Animal Science Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
- Stiftung Tierärztliche Hochschule Hannover, Hannover, Germany
| | - Frauke Alves
- Max-Planck-Institute for Experimental Medicine, Translational Molecular Imaging, Göttingen, Germany
- DZHK (German Center for Cardiovascular Research), Partner site Göttingen, 37077 Göttingen, Germany
- University Medical Center Göttingen, Institute for Diagnostic and Interventional Radiology & Clinic for Hematology and Medical Oncology, Göttingen, Germany
- Cluster of Excellence “Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells,” Göttingen, Germany
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24
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Lee M, Kannan S, Muniraj G, Rosa V, Lu WF, Fuh JYH, Sriram G, Cao T. Two-Photon Fluorescence Microscopy and Applications in Angiogenesis and Related Molecular Events. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:926-937. [PMID: 34541887 DOI: 10.1089/ten.teb.2021.0140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The role of angiogenesis in health and disease have gained considerable momentum in recent years. Visualizing angiogenic patterns and associated events of surrounding vascular beds in response to therapeutic and laboratory-grade biomolecules have become a commonplace in regenerative medicine and the biosciences. To aid imaging investigations in angiogenesis, the two-photon excitation fluorescence microscopy (2PEF), or multiphoton fluorescence microscopy is increasingly utilized in scientific investigations. The 2PEF microscope confers several distinct imaging advantages over other fluorescence excitation microscopy techniques - for the observation of in-depth, three-dimensional vascularity in a variety of tissue formats, including fixed tissue specimens and in vivo vasculature in live specimens. Understanding morphological and subcellular changes that occur in cells and tissues during angiogenesis will provide insights to behavioral responses in diseased states, advance the engineering of physiologically-relevant tissue models and provide biochemical clues for the design of therapeutic strategies. We review the applicability and limitations of the 2PEF microscope on the biophysical and molecular-level signatures of angiogenesis in various tissue models. Imaging techniques and strategies for best practices in 2PEF microscopy will be reviewed.
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Affiliation(s)
- Marcus Lee
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Sathya Kannan
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Giridharan Muniraj
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Vinicius Rosa
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Wen Feng Lu
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Jerry Y H Fuh
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Gopu Sriram
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Tong Cao
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
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25
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Hristu R, Stanciu SG, Dumitru A, Paun B, Floroiu I, Costache M, Stanciu GA. Influence of hematoxylin and eosin staining on the quantitative analysis of second harmonic generation imaging of fixed tissue sections. BIOMEDICAL OPTICS EXPRESS 2021; 12:5829-5843. [PMID: 34692218 PMCID: PMC8515976 DOI: 10.1364/boe.428701] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/20/2021] [Accepted: 07/20/2021] [Indexed: 05/13/2023]
Abstract
Second harmonic generation (SHG) microscopy has emerged over the past two decades as a powerful tool for tissue characterization and diagnostics. Its main applications in medicine are related to mapping the collagen architecture of in-vivo, ex-vivo and fixed tissues based on endogenous contrast. In this work we present how H&E staining of excised and fixed tissues influences the extraction and use of image parameters specific to polarization-resolved SHG (PSHG) microscopy, which are known to provide quantitative information on the collagen structure and organization. We employ a theoretical collagen model for fitting the experimental PSHG datasets to obtain the second order susceptibility tensor elements ratios and the fitting efficiency. Furthermore, the second harmonic intensity acquired under circular polarization is investigated. The evolution of these parameters in both forward- and backward-collected SHG are computed for both H&E-stained and unstained tissue sections. Consistent modifications are observed between the two cases in terms of the fitting efficiency and the second harmonic intensity. This suggests that similar quantitative analysis workflows applied to PSHG images collected on stained and unstained tissues could yield different results, and hence affect the diagnostic accuracy.
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Affiliation(s)
- Radu Hristu
- Center for Microcopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Stefan G. Stanciu
- Center for Microcopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Adrian Dumitru
- Department of Pathology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Bogdan Paun
- Faculty of Automation and Computer Science, Technical University of Cluj-Napoca, 40002 Cluj-Napoca, Romania
| | - Iustin Floroiu
- Center for Microcopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Mariana Costache
- Department of Pathology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - George A. Stanciu
- Center for Microcopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 060042 Bucharest, Romania
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26
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Zamora-Perez P, Pelaz B, Tsoutsi D, Soliman MG, Parak WJ, Rivera-Gil P. Hyperspectral-enhanced dark field analysis of individual and collective photo-responsive gold-copper sulfide nanoparticles. NANOSCALE 2021; 13:13256-13272. [PMID: 34477734 DOI: 10.1039/d0nr08256b] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We used hyperspectral-enhanced dark field microscopy for studying physicochemical changes in biomaterials by tracking their unique spectral signatures along their pathway through different biological environments typically found in any biomedical application. We correlate these spectral signatures with discrete environmental features causing changes in nanoparticles' physicochemical properties. We use this correlation to track the nanoparticles intracellularly and to assess the impact of these changes on their functionality. We focus on one example of a photothermal nanocomposite, i.e., polymer-coated gold/copper sulfide nanoparticles, because their performance depends on their localized surface plasmon peak, which is highly sensitive to environmental changes. We found spectral differences both in the dependence of time and discrete environmental factors, affecting the range of illumination wavelengths that can be used to activate the functionality of these types of nanoparticles. The presence of proteins (protein corona) and the increase in ionic strength induce a spectral broadening towards the NIR region which we associated with nanoparticles' agglomeration. In acidic environments, such as that of the lysosome, a red shift was also observed in addition to a decrease in the scattering intensity probably associated with a destabilization of the proteins and/or the change in the net charge of the polymer around the nanoparticles. We observed a loss of the photo-excitation potential of those nanoparticles exposed to acidic conditions in the <600 nm spectral rage. In a similar manner, ageing induces a transitioning from a broad multipeak spectrum to a distinct shoulder with time (up to 8 months) with the loss of spectral contribution in the 450-600 nm range. Hence, a fresh preparation of nanoparticles before their application would be recommended for an optimal performance. We highlight the impact of ageing and the acidic environment on the responsiveness of this type of plasmonic nanoparticle. Regardless of the spectral differences found, polymer-coated gold/copper sulfide nanoparticles retained their photothermal response as demonstrated in vitro upon two-photon irradiation. This could be ascribed to their robust geometry provided by the polymer coating. These results should be useful to rationally design plasmonic photothermal probes.
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Affiliation(s)
- Paula Zamora-Perez
- Integrative Biomedical Materials and Nanomedicine Lab, Department of Experimental and Health Sciences (DCEXS), Pompeu Fabra University (UPF), Biomedical Research Park (PRBB), carrer Doctor Aiguader 88, 08003 Barcelona, Spain.
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27
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Ghanim M, Relitti N, McManus G, Butini S, Cappelli A, Campiani G, Mok KH, Kelly VP. A non-toxic, reversibly released imaging probe for oral cancer that is derived from natural compounds. Sci Rep 2021; 11:14069. [PMID: 34234213 PMCID: PMC8263592 DOI: 10.1038/s41598-021-93408-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 06/24/2021] [Indexed: 02/06/2023] Open
Abstract
CD44 is emerging as an important receptor biomarker for various cancers. Amongst these is oral cancer, where surgical resection remains an essential mode of treatment. Unfortunately, surgery is frequently associated with permanent disfigurement, malnutrition, and functional comorbidities due to the difficultly of tumour removal. Optical imaging agents that can guide tumour tissue identification represent an attractive approach to minimising the impact of surgery. Here, we report the synthesis of a water-soluble fluorescent probe, namely HA-FA-HEG-OE (compound 1), that comprises components originating from natural sources: oleic acid, ferulic acid and hyaluronic acid. Compound 1 was found to be non-toxic, displayed aggregation induced emission and accumulated intracellularly in vesicles in SCC-9 oral squamous cells. The uptake of 1 was fully reversible over time. Internalization of compound 1 occurs through receptor mediated endocytosis; uniquely mediated through the CD44 receptor. Uptake is related to tumorigenic potential, with non-tumorigenic, dysplastic DOK cells and poorly tumorigenic MCF-7 cells showing only low intracellular levels and highlighting the critical role of endocytosis in cancer progression and metastasis. Together, the recognised importance of CD44 as a cancer stem cell marker in oral cancer, and the reversible, non-toxic nature of 1, makes it a promising agent for real time intraoperative imaging.
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Affiliation(s)
- Magda Ghanim
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Nicola Relitti
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, 53100, Siena, Italy
| | - Gavin McManus
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Stefania Butini
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, 53100, Siena, Italy.
| | - Andrea Cappelli
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, 53100, Siena, Italy
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022, University of Siena, 53100, Siena, Italy
| | - K H Mok
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Vincent P Kelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
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28
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Tandon I, Quinn KP, Balachandran K. Label-Free Multiphoton Microscopy for the Detection and Monitoring of Calcific Aortic Valve Disease. Front Cardiovasc Med 2021; 8:688513. [PMID: 34179147 PMCID: PMC8226007 DOI: 10.3389/fcvm.2021.688513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022] Open
Abstract
Calcific aortic valve disease (CAVD) is the most common valvular heart disease. CAVD results in a considerable socio-economic burden, especially considering the aging population in Europe and North America. The only treatment standard is surgical valve replacement as early diagnostic, mitigation, and drug strategies remain underdeveloped. Novel diagnostic techniques and biomarkers for early detection and monitoring of CAVD progression are thus a pressing need. Additionally, non-destructive tools are required for longitudinal in vitro and in vivo assessment of CAVD initiation and progression that can be translated into clinical practice in the future. Multiphoton microscopy (MPM) facilitates label-free and non-destructive imaging to obtain quantitative, optical biomarkers that have been shown to correlate with key events during CAVD progression. MPM can also be used to obtain spatiotemporal readouts of metabolic changes that occur in the cells. While cellular metabolism has been extensively explored for various cardiovascular disorders like atherosclerosis, hypertension, and heart failure, and has shown potential in elucidating key pathophysiological processes in heart valve diseases, it has yet to gain traction in the study of CAVD. Furthermore, MPM also provides structural, functional, and metabolic readouts that have the potential to correlate with key pathophysiological events in CAVD progression. This review outlines the applicability of MPM and its derived quantitative metrics for the detection and monitoring of early CAVD progression. The review will further focus on the MPM-detectable metabolic biomarkers that correlate with key biological events during valve pathogenesis and their potential role in assessing CAVD pathophysiology.
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Affiliation(s)
- Ishita Tandon
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Kyle P Quinn
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Kartik Balachandran
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
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29
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Chen D, Nauen DW, Park HC, Li D, Yuan W, Li A, Guan H, Kut C, Chaichana KL, Bettegowda C, Quiñones-Hinojosa A, Li X. Label-free imaging of human brain tissue at subcellular resolution for potential rapid intra-operative assessment of glioma surgery. Am J Cancer Res 2021; 11:7222-7234. [PMID: 34158846 PMCID: PMC8210590 DOI: 10.7150/thno.59244] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/11/2021] [Indexed: 12/20/2022] Open
Abstract
Background: Frozen section and smear preparation are the current standard for intraoperative histopathology during cancer surgery. However, these methods are time-consuming and subject to limited sampling. Multiphoton microscopy (MPM) is a high-resolution non-destructive imaging technique capable of optical sectioning in real time with subcellular resolution. In this report, we systematically investigated the feasibility and translation potential of MPM for rapid histopathological assessment of label- and processing-free surgical specimens. Methods: We employed a customized MPM platform to capture architectural and cytological features of biological tissues based on two-photon excited NADH and FAD autofluorescence and second harmonic generation from collagen. Infiltrating glioma, an aggressive disease that requires subcellular resolution for definitive characterization during surgery, was chosen as an example for this validation study. MPM images were collected from resected brain specimens of 19 patients and correlated with histopathology. Deep learning was introduced to assist with image feature recognition. Results: MPM robustly captures diagnostic features of glioma including increased cellularity, cellular and nuclear pleomorphism, microvascular proliferation, necrosis, and collagen deposition. Preliminary application of deep learning to MPM images achieves high accuracy in distinguishing gray from white matter and cancer from non-cancer. We also demonstrate the ability to obtain such images from intact brain tissue with a multiphoton endomicroscope for intraoperative application. Conclusion: Multiphoton imaging correlates well with histopathology and is a promising tool for characterization of cancer and delineation of infiltration within seconds during brain surgery.
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Zhang H, Chen Y, Cao D, Li W, Jing Y, Zhong H, Liu H, Zhu X. Optical biopsy of laryngeal lesions using femtosecond multiphoton microscopy. BIOMEDICAL OPTICS EXPRESS 2021; 12:1308-1319. [PMID: 33796355 PMCID: PMC7984806 DOI: 10.1364/boe.414931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/17/2021] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Laryngeal squamous cell carcinoma (LSCC) is one of the most prevalent malignancy of the upper aerodigestive tract. Detection of early lesions in vivo could improve the survival rate significantly. In this study, we demonstrated that femtosecond multiphoton microscopy (MPM) is an effective tool to visualize the microscopic features within fixed laryngeal tissues, without sectioning, staining, or labeling. Accurate detection of lesions and determination of the tumor grading can be achieved, with excellent consistency with conventional histological examination. These results suggest that MPM may represent a powerful tool for in-vivo or fast ex-vivo diagnosis of laryngeal lesions at the point of care.
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Affiliation(s)
- Hong Zhang
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University; Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
- These authors contributed equally to this work
| | - Yan Chen
- Femtosecond Research Center (Guangzhou), A616 80 Lanyue Road, Guangzhou 510663, China
- These authors contributed equally to this work
| | - Dingfang Cao
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University; Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - Wenjing Li
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University; Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - Yanlei Jing
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University; Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - Hua Zhong
- Femtosecond Research Center (Guangzhou), A616 80 Lanyue Road, Guangzhou 510663, China
| | - Honggang Liu
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University; Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - Xin Zhu
- Femtosecond Research Center (Guangzhou), A616 80 Lanyue Road, Guangzhou 510663, China
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31
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Kang J, Kang U, Nam HS, Kim W, Kim HJ, Kim RH, Kim JW, Yoo H. Label-free multimodal microscopy using a single light source and detector for biological imaging. OPTICS LETTERS 2021; 46:892-895. [PMID: 33577541 DOI: 10.1364/ol.415938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
Multimodal nonlinear microscopy has been widely applied in biology and medicine due to its relatively deep penetration into tissue and its label-free manner. However, current multimodal systems require the use of multiple sources and detectors, leading to bulky, complex, and expensive systems. In this Letter, we present a novel method of using a single light source and detector for nonlinear multimodal imaging of biological samples. Using a photonic crystal fiber, a pulse picker, and multimode fibers, our developed system successfully acquired multimodal images of swine coronary arteries, including two-photon excitation fluorescence, second-harmonic generation, coherent anti-Stokes Raman scattering, and backreflection. The developed system could be a valuable tool for various biomedical applications.
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32
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He Z, Wang P, Ye X. Novel endoscopic optical diagnostic technologies in medical trial research: recent advancements and future prospects. Biomed Eng Online 2021; 20:5. [PMID: 33407477 PMCID: PMC7789310 DOI: 10.1186/s12938-020-00845-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 12/23/2020] [Indexed: 12/20/2022] Open
Abstract
Novel endoscopic biophotonic diagnostic technologies have the potential to non-invasively detect the interior of a hollow organ or cavity of the human body with subcellular resolution or to obtain biochemical information about tissue in real time. With the capability to visualize or analyze the diagnostic target in vivo, these techniques gradually developed as potential candidates to challenge histopathology which remains the gold standard for diagnosis. Consequently, many innovative endoscopic diagnostic techniques have succeeded in detection, characterization, and confirmation: the three critical steps for routine endoscopic diagnosis. In this review, we mainly summarize researches on emerging endoscopic optical diagnostic techniques, with emphasis on recent advances. We also introduce the fundamental principles and the development of those techniques and compare their characteristics. Especially, we shed light on the merit of novel endoscopic imaging technologies in medical research. For example, hyperspectral imaging and Raman spectroscopy provide direct molecular information, while optical coherence tomography and multi-photo endomicroscopy offer a more extensive detection range and excellent spatial-temporal resolution. Furthermore, we summarize the unexplored application fields of these endoscopic optical techniques in major hospital departments for biomedical researchers. Finally, we provide a brief overview of the future perspectives, as well as bottlenecks of those endoscopic optical diagnostic technologies. We believe all these efforts will enrich the diagnostic toolbox for endoscopists, enhance diagnostic efficiency, and reduce the rate of missed diagnosis and misdiagnosis.
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Affiliation(s)
- Zhongyu He
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Peng Wang
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Xuesong Ye
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, 310027, People's Republic of China.
- State Key Laboratory of CAD and CG, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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33
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Erreni M, Doni A, Weigert R. Method for Acute Intravital Imaging of the Large Intestine in Live Mice. Methods Mol Biol 2021; 2304:285-299. [PMID: 34028723 DOI: 10.1007/978-1-0716-1402-0_15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Intravital microscopy is an imaging technique aimed at the visualization of the dynamics of biological processes in live animals. In the last decade, the development of nonlinear optical microscopy has enormously increased the use of this technique, thus addressing key biological questions in different fields such as immunology, neurobiology and tumor biology. In addition, new upcoming strategies to minimize motion artifacts due to animal respiration and heartbeat have enabled the visualization in real time of biological processes at cellular and subcellular resolution. Recently, intravital microscopy has been applied to analyze different aspect of mucosal immunity in the gut. However, the majority of these studies have been performed on the small intestine. Although crucial aspects of the biology of this organ have been unveiled, the majority of intestinal pathologies in humans occur in the large intestine.Here, we describe a method to surgically expose and stabilize the large intestine in live mice and to perform short-term (up to 2 h) intravital microscopy.
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Affiliation(s)
- Marco Erreni
- Unit of Advanced Optical Microscopy, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy.
| | - Andrea Doni
- Unit of Advanced Optical Microscopy, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Roberto Weigert
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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Abstract
Microphysiological systems (MPS), often referred to as "organ-on-chips," are microfluidic-based in vitro models that aim to recapitulate the dynamic chemical and mechanical microenvironment of living organs. MPS promise to bridge the gap between in vitro and in vivo models and ultimately improve the translation from preclinical animal studies to clinical trials. However, despite the explosion of interest in this area in recent years, and the obvious rewards for such models that could improve R&D efficiency and reduce drug attrition in the clinic, the pharmaceutical industry has been slow to fully adopt this technology. The ability to extract robust, quantitative information from MPS at scale is a key requirement if these models are to impact drug discovery and the subsequent drug development process. Microscopy imaging remains a core technology that enables the capture of information at the single-cell level and with subcellular resolution. Furthermore, such imaging techniques can be automated, increasing throughput and enabling compound screening. In this review, we discuss a range of imaging techniques that have been applied to MPS of varying focus, such as organoids and organ-chip-type models. We outline the opportunities these technologies can bring in terms of understanding mechanistic biology, but also how they could be used in higher-throughput screens, widening the scope of their impact in drug discovery. We discuss the associated challenges of imaging these complex models and the steps required to enable full exploitation. Finally, we discuss the requirements for MPS, if they are to be applied at a scale necessary to support drug discovery projects.
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Affiliation(s)
- Samantha Peel
- Discovery Biology, Discovery Sciences, R&D, AstraZeneca, Cambridge, United Kingdom
| | - Mark Jackman
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, United Kingdom
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35
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Husni P, Shin Y, Kim JC, Kang K, Lee ES, Youn YS, Rusdiana T, Oh KT. Photo-Based Nanomedicines Using Polymeric Systems in the Field of Cancer Imaging and Therapy. Biomedicines 2020; 8:E618. [PMID: 33339198 PMCID: PMC7765596 DOI: 10.3390/biomedicines8120618] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 12/14/2022] Open
Abstract
The use of photo-based nanomedicine in imaging and therapy has grown rapidly. The property of light in converting its energy into different forms has been exploited in the fields of optical imaging (OI) and phototherapy (PT) for diagnostic and therapeutic applications. The development of nanotechnology offers numerous advantages to overcome the challenges of OI and PT. Accordingly, in this review, we shed light on common photosensitive agents (PSAs) used in OI and PT; these include fluorescent and bioluminescent PSAs for OI or PT agents for photodynamic therapy (PDT) and photothermal therapy (PTT). We also describe photo-based nanotechnology systems that can be used in photo-based diagnostics and therapies by using various polymeric systems.
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Affiliation(s)
- Patihul Husni
- Department of Global Innovative Drugs, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (P.H.); (Y.S.); (J.C.K.); (K.K.)
| | - Yuseon Shin
- Department of Global Innovative Drugs, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (P.H.); (Y.S.); (J.C.K.); (K.K.)
| | - Jae Chang Kim
- Department of Global Innovative Drugs, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (P.H.); (Y.S.); (J.C.K.); (K.K.)
| | - Kioh Kang
- Department of Global Innovative Drugs, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (P.H.); (Y.S.); (J.C.K.); (K.K.)
| | - Eun Seong Lee
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Bucheon-si 14662, Gyeonggi-do, Korea;
| | - Yu Seok Youn
- School of Pharmacy, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, Korea;
| | - Taofik Rusdiana
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor 45363, Indonesia;
| | - Kyung Taek Oh
- Department of Global Innovative Drugs, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (P.H.); (Y.S.); (J.C.K.); (K.K.)
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Pal R, Villarreal P, Yu X, Qiu S, Vargas G. Multimodal widefield fluorescence imaging with nonlinear optical microscopy workflow for noninvasive oral epithelial neoplasia detection: a preclinical study. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:JBO-200213R. [PMID: 33200597 PMCID: PMC7667429 DOI: 10.1117/1.jbo.25.11.116008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/02/2020] [Indexed: 05/06/2023]
Abstract
SIGNIFICANCE Early detection of epithelial cancers and precancers/neoplasia in the presence of benign lesions is challenging due to the lack of robust in vivo imaging and biopsy guidance techniques. Label-free nonlinear optical microscopy (NLOM) has shown promise for optical biopsy through the detection of cellular and extracellular signatures of neoplasia. Although in vivo microscopy techniques continue to be developed, the surface area imaged in microscopy is limited by the field of view. FDA-approved widefield fluorescence (WF) imaging systems that capture autofluorescence signatures of neoplasia provide molecular information at large fields of view, which may complement the cytologic and architectural information provided by NLOM. AIM A multimodal imaging approach with high-sensitivity WF and high-resolution NLOM was investigated to identify and distinguish image-based features of neoplasia from normal and benign lesions. APPROACH In vivo label-free WF imaging and NLOM was performed in preclinical hamster models of oral neoplasia and inflammation. Analyses of WF imaging, NLOM imaging, and dual modality (WF combined with NLOM) were performed. RESULTS WF imaging showed increased red-to-green autofluorescence ratio in neoplasia compared to inflammation and normal oral mucosa (p < 0.01). In vivo assessment of the mucosal tissue with NLOM revealed subsurface cytologic (nuclear pleomorphism) and architectural (remodeling of extracellular matrix) atypia in histologically confirmed neoplastic tissue, which were not observed in inflammation or normal mucosa. Univariate and multivariate statistical analysis of macroscopic and microscopic image-based features indicated improved performance (94% sensitivity and 97% specificity) of a multiscale approach over WF alone, even in the presence of benign lesions (inflammation), a common confounding factor in diagnostics. CONCLUSIONS A multimodal imaging approach integrating strengths from WF and NLOM may be beneficial in identifying oral neoplasia. Our study could guide future studies on human oral neoplasia to further evaluate merits and limitations of multimodal workflows and inform the development of multiscale clinical imaging systems.
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Affiliation(s)
- Rahul Pal
- Massachusetts General Hospital and Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts, United States
| | - Paula Villarreal
- The University of Texas Medical Branch, Biomedical Engineering and Imaging Sciences Group, Galveston, Texas, United States
- The University of Texas Medical Branch, Department of Neuroscience, Cell Biology, and Anatomy, Galveston, Texas, United States
| | - Xiaoying Yu
- The University of Texas Medical Branch, Department of Preventive Medicine and Population Health, Galveston, Texas, United States
| | - Suimin Qiu
- The University of Texas Medical Branch, Department of Pathology, Galveston, Texas, United States
| | - Gracie Vargas
- The University of Texas Medical Branch, Biomedical Engineering and Imaging Sciences Group, Galveston, Texas, United States
- The University of Texas Medical Branch, Department of Neuroscience, Cell Biology, and Anatomy, Galveston, Texas, United States
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Chen WC, Chen YJ, Lin ST, Hung WH, Chan MC, Wu IC, Wu MT, Kuo CT, Das S, Kao FJ, Zhuo GY. Label-free characterization of collagen fibers in cancerous esophagus tissues using ratiometric nonlinear optical microscopy. Exp Biol Med (Maywood) 2020; 245:1213-1221. [PMID: 32536201 DOI: 10.1177/1535370220934039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
IMPACT STATEMENT The issue of classifying esophageal cancer at various developmental stages is crucial for determining the optimized treatment protocol for the patients, as well as the prognosis. Precision improvement in staging esophageal cancer keeps seeking quantitative and analytical imaging methods that could augment histopathological techniques. In this work, we used nonlinear optical microscopy for ratiometric analysis on the intrinsic signal of two-photon excited fluorescence (TPEF) and second harmonic generation (SHG) from single collagen fibers only in submucosa of esophageal squamous cell carcinoma (ESCC). The blind tests of TPEF/SHG and forward (F)/backward (B) SHG were demonstrated to compare with the histology conclusion. The discussion of sensitivity and specificity was provided via statistical comparison between the four stages of esophageal cancer. To the best of our knowledge, this is the first study of using these two ratios in combination for staging ESCC.
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Affiliation(s)
- Wei-Chung Chen
- Ph.D. Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Jen Chen
- Integrative Stem Cell Center, China Medical University Hospital, Taichung 40447, Taiwan
| | - Shih-Ting Lin
- Integrative Stem Cell Center, China Medical University Hospital, Taichung 40447, Taiwan
| | - Wei-Han Hung
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Ming-Che Chan
- Institute of Photonic System, College of Photonics, National Chiao-Tung University, Tainan 71150, Taiwan
| | - I-Chen Wu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ming-Tsang Wu
- Department of Public Health, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Chie-Tong Kuo
- Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Subir Das
- Institute of Biophotonics, National Yang-Ming University, Taipei 11221, Taiwan
| | - Fu-Jen Kao
- Institute of Biophotonics, National Yang-Ming University, Taipei 11221, Taiwan
| | - Guan-Yu Zhuo
- Integrative Stem Cell Center, China Medical University Hospital, Taichung 40447, Taiwan.,Institute of New Drug Development, China Medical University, Taichung 40402, Taiwans
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Uckermann O, Galli R, Mark G, Meinhardt M, Koch E, Schackert G, Steiner G, Kirsch M. Label-free multiphoton imaging allows brain tumor recognition based on texture analysis-a study of 382 tumor patients. Neurooncol Adv 2020; 2:vdaa035. [PMID: 32642692 PMCID: PMC7212881 DOI: 10.1093/noajnl/vdaa035] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Background Label-free multiphoton microscopy has been suggested for intraoperative recognition and delineation of brain tumors. For any future clinical application, appropriate approaches for image acquisition and analysis have to be developed. Moreover, an evaluation of the reliability of the approach, taking into account inter- and intrapatient variability, is needed. Methods Coherent anti-Stokes Raman scattering (CARS), two-photon excited fluorescence (TPEF), and second-harmonic generation were acquired on cryosections of brain tumors of 382 patients and 28 human nontumor brain samples. Texture parameters of those images were calculated and used as input for linear discriminant analysis. Results The combined analysis of texture parameters of the CARS and TPEF signal proved to be most suited for the discrimination of nontumor brain versus brain tumors (low- and high-grade astrocytoma, oligodendroglioma, glioblastoma, recurrent glioblastoma, brain metastases of lung, colon, renal, and breast cancer and of malignant melanoma) leading to a correct rate of 96% (sensitivity: 96%, specificity: 100%). To approximate the clinical setting, the results were validated on 42 fresh, unfixed tumor biopsies. 82% of the tumors and, most important, all of the nontumor samples were correctly recognized. An image resolution of 1 µm was sufficient to distinguish brain tumors and nontumor brain. Moreover, the vast majority of single fields of view of each patient’s sample were correctly classified with high probabilities, which is important for clinical translation. Conclusion Label-free multiphoton imaging might allow fast and accurate intraoperative delineation of primary and secondary brain tumors in combination with endoscopic systems.
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Affiliation(s)
- Ortrud Uckermann
- Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Roberta Galli
- Clinical Sensoring and Monitoring, Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Georg Mark
- Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Matthias Meinhardt
- Neuropathology, Institute of Pathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Edmund Koch
- Clinical Sensoring and Monitoring, Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Gabriele Schackert
- Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Gerald Steiner
- Clinical Sensoring and Monitoring, Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Matthias Kirsch
- Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
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James J, Kantere D, Enger J, Siarov J, Wennberg AM, Ericson MB. Report on fluorescence lifetime imaging using multiphoton laser scanning microscopy targeting sentinel lymph node diagnostics. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:1-8. [PMID: 32172545 PMCID: PMC7070082 DOI: 10.1117/1.jbo.25.7.071204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
SIGNIFICANCE Sentinel lymph node (SLN) biopsy is an important method for metastasis staging in, e.g., patients with malignant melanoma. Tools enabling prompt histopathological analysis are expected to facilitate diagnostics; optical technologies are explored for this purpose. AIM The objective of this exploratory study was to investigate the potential of adopting multiphoton laser scanning microscopy (MPM) together with fluorescence lifetime analysis (FLIM) for the examination of lymph node (LN) tissue ex vivo. APPROACH Five LN tissue samples (three metastasis positive and two negative) were acquired from a biobank comprising tissues from melanoma patients. Tissues were deparaffinized and subjected to MPM-FLIM using an experimental MPM set-up equipped with a time correlated single photon counting module enabling FLIM. RESULTS The data confirm that morphological features similar to conventional histology were observed. In addition, FLIM analysis revealed elevated morphological contrast, particularly for discriminating between metastatic cells, lymphocytes, and erythrocytes. CONCLUSIONS Taken together, the results from this investigation show promise for adopting MPM-FLIM in the context of SLN diagnostics and encourage further translational studies on fresh tissue samples.
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Affiliation(s)
- Jeemol James
- University of Gothenburg, Biomedical Photonics Group, Department of Chemistry and Molecular Biology, Gothenburg, Sweden
| | - Despoina Kantere
- University of Gothenburg, Institute of Clinical Sciences, Department of Dermatology and Venereology, Gothenburg, Sweden
| | - Jonas Enger
- University of Gothenburg, Department of Physics, Gothenburg, Sweden
| | - Jan Siarov
- University of Gothenburg, Department of Pathology, Gothenburg, Sweden
| | - Ann Marie Wennberg
- University of Gothenburg, Institute of Clinical Sciences, Department of Dermatology and Venereology, Gothenburg, Sweden
| | - Marica B. Ericson
- University of Gothenburg, Biomedical Photonics Group, Department of Chemistry and Molecular Biology, Gothenburg, Sweden
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40
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Zhao Y, Maguluri G, Ferguson RD, Tu H, Paul K, Boppart SA, Llano DA, Iftimia N. Two-photon microscope using a fiber-based approach for supercontinuum generation and light delivery to a small-footprint optical head. OPTICS LETTERS 2020; 45:909-912. [PMID: 32058502 PMCID: PMC7316260 DOI: 10.1364/ol.381571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/06/2020] [Indexed: 05/20/2023]
Abstract
In this Letter, we report a low-cost, portable, two-photon excitation fluorescence microscopy imager that uses a fiber-based approach for both femtosecond supercontinuum (SC) generation and light delivery to the optical head. The SC generation is based on a tapered polarization-maintaining photonic crystal fiber that uses pre-chirped femtosecond narrowband pulses to generate a coherent SC spectrum with a bandwidth of approximately 300 nm. Using this approach, high-power, near-transform-limited, wavelength-selectable SC pulses are generated and directly delivered to the imaging optical head. Preliminary testing of this imager on brain slices is presented, demonstrating a high signal-to-noise ratio and sub-cellular imaging capabilities to a depth of approximately 200 µm. These results demonstrate the suitability of the technology for ex vivo and potentially in vivo cellular-level biomedical imaging applications.
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Affiliation(s)
- Youbo Zhao
- Physical Sciences Inc., 20 New England Business Center Dr., Andover, Massachusetts 01810, USA
| | - Gopi Maguluri
- Physical Sciences Inc., 20 New England Business Center Dr., Andover, Massachusetts 01810, USA
| | - R. Daniel Ferguson
- Physical Sciences Inc., 20 New England Business Center Dr., Andover, Massachusetts 01810, USA
| | - Haohua Tu
- Beckman Institute for Advanced Science and Technology, University of Illinois, 405 N. Mathews Ave., Urbana, Illinois 61822, USA
| | - Kush Paul
- Beckman Institute for Advanced Science and Technology, University of Illinois, 405 N. Mathews Ave., Urbana, Illinois 61822, USA
- Department of Molecular and Integrative Physiology, University of Illinois, 405 N. Mathews Ave., Urbana, Illinois 61822, USA
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois, 405 N. Mathews Ave., Urbana, Illinois 61822, USA
| | - Daniel A. Llano
- Beckman Institute for Advanced Science and Technology, University of Illinois, 405 N. Mathews Ave., Urbana, Illinois 61822, USA
- Department of Molecular and Integrative Physiology, University of Illinois, 405 N. Mathews Ave., Urbana, Illinois 61822, USA
| | - Nicusor Iftimia
- Physical Sciences Inc., 20 New England Business Center Dr., Andover, Massachusetts 01810, USA
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Perrin L, Bayarmagnai B, Gligorijevic B. Frontiers in Intravital Multiphoton Microscopy of Cancer. Cancer Rep (Hoboken) 2020; 3:e1192. [PMID: 32368722 PMCID: PMC7197974 DOI: 10.1002/cnr2.1192] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 03/12/2019] [Accepted: 03/21/2019] [Indexed: 12/23/2022] Open
Abstract
Background Cancer is a highly complex disease which involves the co-operation of tumor cells with multiple types of host cells and the extracellular matrix. Cancer studies which rely solely on static measurements of individual cell types are insufficient to dissect this complexity. In the last two decades, intravital microscopy has established itself as a powerful technique that can significantly improve our understanding of cancer by revealing the dynamic interactions governing cancer initiation, progression and treatment effects, in living animals. This review focuses on intravital multiphoton microscopy (IV-MPM) applications in mouse models of cancer. Recent Findings IV-MPM studies have already enabled a deeper understanding of the complex events occurring in cancer, at the molecular, cellular and tissue levels. Multiple cells types, present in different tissues, influence cancer cell behavior via activation of distinct signaling pathways. As a result, the boundaries in the field of IV-MPM are continuously being pushed to provide an integrated comprehension of cancer. We propose that optics, informatics and cancer (cell) biology are co-evolving as a new field. We have identified four emerging themes in this new field. First, new microscopy systems and image processing algorithms are enabling the simultaneous identification of multiple interactions between the tumor cells and the components of the tumor microenvironment. Second, techniques from molecular biology are being exploited to visualize subcellular structures and protein activities within individual cells of interest, and relate those to phenotypic decisions, opening the door for "in vivo cell biology". Third, combining IV-MPM with additional imaging modalities, or omics studies, holds promise for linking the cell phenotype to its genotype, metabolic state or tissue location. Finally, the clinical use of IV-MPM for analyzing efficacy of anti-cancer treatments is steadily growing, suggesting a future role of IV-MPM for personalized medicine. Conclusion IV-MPM has revolutionized visualization of tumor-microenvironment interactions in real time. Moving forward, incorporation of novel optics, automated image processing, and omics technologies, in the study of cancer biology, will not only advance our understanding of the underlying complexities but will also leverage the unique aspects of IV-MPM for clinical use.
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Affiliation(s)
- Louisiane Perrin
- Department of BioengineeringTemple UniversityPhiladelphiaPennsylvania
| | | | - Bojana Gligorijevic
- Department of BioengineeringTemple UniversityPhiladelphiaPennsylvania
- Fox Chase Cancer CenterCancer Biology ProgramPhiladelphiaPennsylvania
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Kapsokalyvas D, van Zandvoort MAMJ. Molecular Imaging in Oncology: Advanced Microscopy Techniques. Recent Results Cancer Res 2020; 216:533-561. [PMID: 32594398 DOI: 10.1007/978-3-030-42618-7_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Preclinical studies usually require high levels of morphological, functional, and biochemical information at subcellular resolution. This type of information cannot be obtained from clinical imaging techniques, such as MRI, PET/CT, or US. Luckily, many microscopy techniques exist that can offer this information, also for malignant tissues and therapeutic approaches. In this overview, we discuss the various advanced optical microscopy techniques and their applications in oncological research. After a short introduction in Sect. 16.1, we continue in Sect. 16.2 with a discussion on fluorescent labelling strategies, followed in Sect. 16.3 by an in-depth description of confocal, light-sheet, two-photon, and super-resolution microscopy. We end in Sect. 16.4 with a focus on the applications, specifically in oncology.
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Affiliation(s)
- Dimitrios Kapsokalyvas
- School for Oncology and Developmental Biology GROW and School for Cardiovascular Diseases CARIM, Maastricht University, Maastricht, The Netherlands
- Institut für Molekulare Kreislaufforschung, Universitätsklinikum Aachen, Aachen, Germany
| | - Marc A M J van Zandvoort
- School for Oncology and Developmental Biology GROW and School for Cardiovascular Diseases CARIM, Maastricht University, Maastricht, The Netherlands.
- Institut für Molekulare Kreislaufforschung, Universitätsklinikum Aachen, Aachen, Germany.
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Chrabaszcz K, Meyer T, Bae H, Schmitt M, Jasztal A, Smeda M, Stojak M, Popp J, Malek K, Marzec KM. Comparison of standard and HD FT-IR with multimodal CARS/TPEF/SHG/FLIMS imaging in the detection of the early stage of pulmonary metastasis of murine breast cancer. Analyst 2020; 145:4982-4990. [DOI: 10.1039/d0an00762e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The comparison of the potential of FT-IR in standard and high definition modes with multimodal CARS/TPEF/SHG/FLIMS imaging for detection of the early stage of pulmonary metastasis of murine breast cancer is presented.
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Affiliation(s)
- Karolina Chrabaszcz
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Krakow
- Poland
- Jagiellonian Centre for Experimental Therapeutics
| | - Tobias Meyer
- Leibniz-Institute of Photonic Technology e.V
- Member of Leibniz Health Technologies
- 07745 Jena
- Germany
- Institute of Physical Chemistry and Abbe Center of Photonics
| | - Hyeonsoo Bae
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- 07745 Jena
- Germany
| | - Michael Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- 07745 Jena
- Germany
| | - Agnieszka Jasztal
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
| | - Marta Smeda
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
| | - Marta Stojak
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
| | - Jürgen Popp
- Leibniz-Institute of Photonic Technology e.V
- Member of Leibniz Health Technologies
- 07745 Jena
- Germany
- Institute of Physical Chemistry and Abbe Center of Photonics
| | - Kamilla Malek
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Krakow
- Poland
- Jagiellonian Centre for Experimental Therapeutics
| | - Katarzyna M. Marzec
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
- Centre for Medical Genomics OMICRON
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Chen Z, Guo W, Kang D, Wang S, Zheng L, Xi G, Lian Y, Wang C, Chen J. Label-Free Identification of Early Stages of Breast Ductal Carcinoma via Multiphoton Microscopy. SCANNING 2020; 2020:9670514. [PMID: 32454928 PMCID: PMC7154972 DOI: 10.1155/2020/9670514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 03/03/2020] [Indexed: 05/13/2023]
Abstract
Breast cancer can be cured by early diagnosis. Appropriate and effective clinical treatment benefits from accurate pathological diagnosis. However, due to the lack of effective screening and diagnostic imaging methods, early stages of breast cancer often progress to malignant breast cancer. In this study, multiphoton microscopy (MPM) via two-photon excited fluorescence combined with second-harmonic generation was used for identifying the early stages of breast ductal carcinoma. The results showed differences in both cytological features and collagen distribution among normal breast tissue, atypical ductal hyperplasia, low-grade ductal carcinoma in situ, and high-grade ductal carcinoma in situ with microinvasion. Furthermore, three features extracted from the MPM images were used to describe differences in cytological features, collagen density, and basement membrane circumference in the early stages of breast ductal carcinoma. They revealed that MPM has the ability to identify early stages of breast ductal carcinoma label-free, which would contribute to the early diagnosis and treatment of breast cancer. This study may provide the groundwork for the further application of MPM in the clinic.
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Affiliation(s)
- Zhong Chen
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou 350007, China
| | - Wenhui Guo
- Department of Breast Surgery, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Deyong Kang
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Shu Wang
- College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
| | - Liqin Zheng
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou 350007, China
| | - Gangqin Xi
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou 350007, China
| | - Yuane Lian
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Chuan Wang
- Department of Breast Surgery, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Jianxin Chen
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou 350007, China
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Lin H, Fan T, Sui J, Wang G, Chen J, Zhuo S, Zhang H. Recent advances in multiphoton microscopy combined with nanomaterials in the field of disease evolution and clinical applications to liver cancer. NANOSCALE 2019; 11:19619-19635. [PMID: 31599299 DOI: 10.1039/c9nr04902a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Multiphoton microscopy (MPM) is expected to become a powerful clinical tool, with its unique advantages of being label-free, high resolution, deep imaging depth, low light photobleaching and low phototoxicity. Nanomaterials, with excellent physical and chemical properties, are biocompatible and easy to prepare and functionalize. The addition of nanomaterials exactly compensates for some defects of MPM, such as the weak endogenous signal strength, limited imaging materials, insufficient imaging depth and lack of therapeutic effects. Therefore, combining MPM with nanomaterials is a promising biomedical imaging method. Here, we mainly review the principle of MPM and its application in liver cancer, especially in disease evolution and clinical applications, including monitoring tumor progression, diagnosing tumor occurrence, detecting tumor metastasis, and evaluating cancer therapy response. Then, we introduce the latest advances in the combination of MPM with nanomaterials, including the MPM imaging of gold nanoparticles (AuNPs) and carbon dots (CDs). Finally, we also propose the main challenges and future research directions of MPM technology in HCC.
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Affiliation(s)
- Hongxin Lin
- Fujian Normal University, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fuzhou, 350007, China.
| | - Taojian Fan
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060, China.
| | - Jian Sui
- Department of Gastrointestinal surgery, Fujian Provincial Hospital, Fuzhou, 350000, China
| | - Guangxing Wang
- Fujian Normal University, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fuzhou, 350007, China.
| | - Jianxin Chen
- Fujian Normal University, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fuzhou, 350007, China.
| | - Shuangmu Zhuo
- Fujian Normal University, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fuzhou, 350007, China.
| | - Han Zhang
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060, China.
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Sibai M, Mehidine H, Moawad EK, Juchaux M, Varlet P, Devaux B, Abi Haidar D. Comparison of optically-derived biomarkers in healthy and brain tumor tissue under one- and two-photon excitation. JOURNAL OF BIOPHOTONICS 2019; 12:e201900111. [PMID: 31276313 DOI: 10.1002/jbio.201900111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/02/2019] [Accepted: 07/04/2019] [Indexed: 06/09/2023]
Abstract
The surgical outcome of brain tumor resection and needle biopsy is significantly correlated to the patient's prognosis. Brain tumor surgery is limited to resecting the solid portion of the tumor as current intraoperative imaging modalities are incapable of delineating infiltrative regions. For accurate delineation, in situ tissue interrogation at the submicron scale is warranted. Additionally, multimodal detection is required to remediate the genetically and molecularly heterogeneous nature of brain tumors, notably, that of gliomas, meningioma and brain metastasis. Multimodal detection, such as spectrally- and temporally-resolved fluorescence under one- and two-photon excitation, enables characterizing tissue based on several endogenous optical contrasts. In order to assign the optically-derived parameters to different tissue types, construction of an optical database obtained from biopsied tissue is warranted. This report showcases the different quantitative and semi-quantitative optical markers that may comprise the tissue discrimination database. These include: the optical index ratio, the optical redox ratio, the relative collagen density, spectrally-resolved fluorescence lifetime parameters, two-photon fluorescence imaging and second harmonic generation imaging.
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Affiliation(s)
- Mira Sibai
- Imagerie et Modélisation en Neurobiologie et Cancérologie (IMNC), CNRS, Univ Paris Sud, Université Paris-Saclay, Orsay, France
- Université de Paris, IMNC, Orsay, France
| | - Hussein Mehidine
- Imagerie et Modélisation en Neurobiologie et Cancérologie (IMNC), CNRS, Univ Paris Sud, Université Paris-Saclay, Orsay, France
- Université de Paris, IMNC, Orsay, France
| | - Emile Kaadou Moawad
- Imagerie et Modélisation en Neurobiologie et Cancérologie (IMNC), CNRS, Univ Paris Sud, Université Paris-Saclay, Orsay, France
- Université de Paris, IMNC, Orsay, France
| | - Marjorie Juchaux
- Imagerie et Modélisation en Neurobiologie et Cancérologie (IMNC), CNRS, Univ Paris Sud, Université Paris-Saclay, Orsay, France
- Université de Paris, IMNC, Orsay, France
| | - Pascale Varlet
- Neuropathology Department, Sainte-Anne Hospital, Paris, France
- IMA BRAIN, INSERMU894, Centre de Psychiatrie et de Neurosciences, Paris, France
- Paris Descartes University, Paris, France
| | - Bertrand Devaux
- Paris Descartes University, Paris, France
- Neurosurgery Department, Sainte-Anne Hospital, Paris, France
| | - Darine Abi Haidar
- Imagerie et Modélisation en Neurobiologie et Cancérologie (IMNC), CNRS, Univ Paris Sud, Université Paris-Saclay, Orsay, France
- Université de Paris, IMNC, Orsay, France
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47
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Fang N, Wu Z, Wang X, Lin Y, Li L, Huang Z, Chen Y, Zheng X, Cai S, Tu H, Kang D, Chen J. Quantitative assessment of microenvironment characteristics and metabolic activity in glioma via multiphoton microscopy. JOURNAL OF BIOPHOTONICS 2019; 12:e201900136. [PMID: 31251837 DOI: 10.1002/jbio.201900136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/31/2019] [Accepted: 06/27/2019] [Indexed: 06/09/2023]
Abstract
Tumor microenvironment and metabolic activity in gliomas are the important biomarkers to evaluate the progression of gliomas. Many evidences have suggested that the targeting of metabolic activity and tumor microenvironment simultaneously can be more effective to take the tumor therapy. Therefore, the noninvasive, accurate assessment of tumor microenvironment and metabolic activity is quite important in clinical practice. Multiphoton microscopy (MPM), based on two-photon-excited fluorescence and second harmonic generation was performed on unstained glioma tissues. With our combined image analysis approaches, our research findings indicate that MPM is able to qualitatively and quantitatively describe the microenvironment characteristics in gliomas, such as collage deposition in extracellular matrix, lymphocyte infiltration and tumor angiogenesis, etc. Meanwhile, the metabolic activity can also be quantitatively evaluated by optical redox ratio, NADH and FAD intensity. With the microendoscope and fiberscope are portable, MPM technique can be used to perform in-vivo studies and clinical examinations in gliomas.
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Affiliation(s)
- Na Fang
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, PR China
| | - Zanyi Wu
- Department of Neurosurgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Xingfu Wang
- Department of Pathology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Yuanxiang Lin
- Department of Neurosurgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Lianhuang Li
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, PR China
| | - Zufang Huang
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, PR China
| | - Yupeng Chen
- Department of Pathology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Xianying Zheng
- Department of Radiology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Shanshan Cai
- Department of Pathology, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, PR China
| | - Haohua Tu
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Dezhi Kang
- Department of Neurosurgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Jianxin Chen
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, PR China
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48
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Caminade AM, Zibarov A, Cueto Diaz E, Hameau A, Klausen M, Moineau-Chane Ching K, Majoral JP, Verlhac JB, Mongin O, Blanchard-Desce M. Fluorescent phosphorus dendrimers excited by two photons: synthesis, two-photon absorption properties and biological uses. Beilstein J Org Chem 2019; 15:2287-2303. [PMID: 31598181 PMCID: PMC6774077 DOI: 10.3762/bjoc.15.221] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/15/2019] [Indexed: 01/01/2023] Open
Abstract
Different types of two-photon absorbing (TPA) fluorophores have been synthesized and specifically functionalized to be incorporated in the structure of phosphorus dendrimers (highly branched macromolecules). The TPA fluorophores were included in the periphery as terminal functions, in the core, or in the branches of the dendrimer structures, respectively. Also the functionalization in two compartments (core and surface, or branches and surface) was achieved. The consequences of the location of the fluorophores on the fluorescence and TPA properties have been studied. Several of these TPA fluorescent dendrimers have water-solubilizing functions as terminal groups, and fluorophores at the core or in the branches. They have been used as fluorescent tools in biology for different purposes, such as tracers for imaging blood vessels of living animals, for determining the phenotype of cells, for deciphering the mechanism of action of anticancer compounds, and for safer photodynamic therapy.
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Affiliation(s)
- Anne-Marie Caminade
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Artem Zibarov
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Eduardo Cueto Diaz
- Univ. Bordeaux, ISM (CNRS-UMR5255), Bat A12, 351 Cours de la Libération, 33400 Talence, France
| | - Aurélien Hameau
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Maxime Klausen
- Univ. Bordeaux, ISM (CNRS-UMR5255), Bat A12, 351 Cours de la Libération, 33400 Talence, France
| | - Kathleen Moineau-Chane Ching
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Jean-Pierre Majoral
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France.,LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Jean-Baptiste Verlhac
- Univ. Bordeaux, ISM (CNRS-UMR5255), Bat A12, 351 Cours de la Libération, 33400 Talence, France
| | - Olivier Mongin
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
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49
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Abdallah MG, Almugaiteeb TI, Raza MU, Battiste JD, Kim YT, Iqbal SM. Glioblastoma Multiforme heterogeneity profiling with solid-state micropores. Biomed Microdevices 2019; 21:79. [PMID: 31414186 DOI: 10.1007/s10544-019-0416-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common and lethal type of brain cancer. It is characterized by widespread heterogeneity at the cellular and molecular levels. The detection of this heterogeneity is valuable for accurate diagnosis. Herein, solid-state 20 μm diameter micropore made in thin suspended silicon dioxide membrane is used as cell sensor device. The device relies on a cell's mechano-physical properties as an indicator to differentiate between the subtypes of GBM. A library of GBM cell lines (U251, U87, D54 EGFRviii, and G55) was created by measuring the differences in cell's micropore translocation properties from their distinct electrical profiles. Each GBM subtype has distinct phenotype and this was delineated in their cell translocation behaviors. The library was used to distinguish cells from samples of brain tumor patients. The micropore device accurately profiled GBM patient samples for cell subtypes by comparing data with the GBM library. The micropore approach is simple, can be implemented at low cost and can be used in the clinical setups and operation theaters to detect and identify GBM subtypes from patient samples.
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Affiliation(s)
- Mohammad G Abdallah
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX, 76019, USA.,Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA.,Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Turki I Almugaiteeb
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76010, USA.,Research Product Development Company Innovations (RPDC), Riyadh, Kingdom of Saudi Arabia
| | - Muhammad Usman Raza
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX, 76019, USA.,Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA.,Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA.,Intel Corporation, Santa Clara, CA, 95054, USA
| | - James D Battiste
- University of Oklahoma Health Science Center, Oklahoma City, OK, 73104, USA
| | - Young-Tae Kim
- Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA.,Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76010, USA.,Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, 75390, USA
| | - Samir M Iqbal
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX, 76019, USA. .,ST Engineering Matters, Arlington, TX, 76010, USA.
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50
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Next-generation imaging of the skeletal system and its blood supply. Nat Rev Rheumatol 2019; 15:533-549. [PMID: 31395974 DOI: 10.1038/s41584-019-0274-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2019] [Indexed: 12/16/2022]
Abstract
Bone is organized in a hierarchical 3D architecture. Traditionally, analysis of the skeletal system was based on bone mass assessment by radiographic methods or on the examination of bone structure by 2D histological sections. Advanced imaging technologies and big data analysis now enable the unprecedented examination of bone and provide new insights into its 3D macrostructure and microstructure. These technologies comprise ex vivo and in vivo methods including high-resolution computed tomography (CT), synchrotron-based imaging, X-ray microscopy, ultra-high-field magnetic resonance imaging (MRI), light-sheet fluorescence microscopy, confocal and intravital two-photon imaging. In concert, these techniques have been used to detect and quantify a novel vascular system of trans-cortical vessels in bone. Furthermore, structures such as the lacunar network, which harbours and connects osteocytes, become accessible for 3D imaging and quantification using these methods. Next-generation imaging of the skeletal system and its blood supply are anticipated to contribute to an entirely new understanding of bone tissue composition and function, from macroscale to nanoscale, in health and disease. These insights could provide the basis for early detection and precision-type intervention of bone disorders in the future.
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