Article
Chemistry, Multidisciplinary
Mi Ho Jeong, Taehwang Son, Yoo Keung Tae, Chan Hee Park, Hee Seung Lee, Moon Jae Chung, Jeong Youp Park, Cesar M. M. Castro, Ralph Weissleder, Jung Hyun Jo, Seungmin Bang, Hyungsoon Im
Summary: Cholangiocarcinoma (CCA) is a fatal disease often diagnosed at advanced stages. There is a lack of effective diagnostic methods or biomarkers for early detection of CCA. A nanoplasmonic sensing technology called FLEX is developed for sensitive and robust single extracellular vesicle (EV) analysis, which detected a wide heterogeneity of CCA-derived EVs and identified tumor markers in clinical bile samples. The FLEX assay showed better diagnostic performance than current clinical markers, offering a potential tool for early CCA diagnosis.
Article
Biotechnology & Applied Microbiology
Maria Eleonora Temperini, Flavio Di Giacinto, Sabrina Romano, Riccardo Di Santo, Alberto Augello, Raffaella Polito, Leonetta Baldassarre, Valeria Giliberti, Massimiliano Papi, Umberto Basile, Benedetta Niccolini, Ewa K. Krasnowska, Annalucia Serafino, Marco De Spirito, Alessandra Di Gaspare, Michele Ortolani, Gabriele Ciasca
Summary: This study demonstrates the use of mid-infrared plasmonic nanoantenna arrays to detect the specific vibrational absorption signal of EVs and the unspecific refractive index sensing signal. By immobilizing EVs on the gold nanoantenna surface through immunocapture, the researchers were able to selectively detect specific EV sub-populations and eliminate contaminants. The findings suggest that this lab-on-chip system has the potential to impact the development of novel laboratory medicine methods for the molecular characterization of EVs, due to its high protein sensitivity and ability to work with small sample volumes.
JOURNAL OF NANOBIOTECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Eric Boateng Osei, Liliia Paniushkina, Konrad Wilhelm, Juergen Popp, Irina Nazarenko, Christoph Krafft
Summary: Extracellular vesicles (EVs) ranging in size from 60 to 800 nm were isolated from plasma of control and prostate cancer patients using differential centrifugation and ultrafiltration techniques. Spontaneous Raman and surface-enhanced Raman spectroscopy (SERS) were employed to identify fractions that best discriminate between control and cancer patients, with results showing that EV12 and EV120 fractions provide the most effective separation.
Article
Nanoscience & Nanotechnology
Beyza Nur Gunaydin, Mert Gulmez, Milad Torabfam, Zeki Semih Pehlivan, Atacan Tutuncuoglu, Cemre Irmak Kayalan, Erhan Saatcioglu, Mustafa Kemal Bayazit, Meral Yuce, Hasan Kurt
Summary: In this study, plasmonic TiN thin films were successfully deposited using reactive RF magnetron sputtering. By optimizing the operation procedures and material structure, the plasmonic performance of the films was improved. The performance of the TiN thin films was evaluated using periodic nanohole arrays, highlighting their potential for refractometric sensing.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Agnieszka Kaminska, Maciej Roman, Andrzej Wrobel, Agnieszka Gala-Bladzinska, Maciej T. Malecki, Czeslawa Paluszkiewicz, Ewa L. Stepien
Summary: This study verified the hypothesis that the Raman signature of urinary extracellular vesicles (UEVs) can be used to classify patients with diabetes at different stages of chronic kidney disease (CKD). The study found significant correlations between Raman bands measured for UEVs and clinical parameters, and significant differences in specific bands mainly derived from proteins and lipids between different study groups. Regression models including tryptophan and amide III bands were able to estimate the values of estimated glomerular filtration rate (eGFR).
NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE
(2022)
Article
Nanoscience & Nanotechnology
Bryson Krause, Minh T. Pham, Hoang M. Luong, Tho D. Nguyen, Thang B. Hoang
Summary: Nanohole arrays can enhance the lasing emission of organic dye liquid gain medium and accelerate the decay rate of CdSe quantum dots. They are simple to fabricate, exhibit excellent optical responses, and have great potential in various emerging technologies such as gas sensing, biomedical imaging, and ultrafast on-chip coherent light sources.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Bryson Krause, Minh T. Pham, Hoang M. Luong, Tho D. Nguyen, Thang B. Hoang
Summary: Periodic arrays of air nanoholes in thin metal films can enhance light-matter interactions at the nanoscale. A simple technique of fabricating hexagonal nanohole arrays is employed, which offers excellent optical responses and can be used for enhanced lasing and spontaneous emission of novel nanomaterials.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ying Zhu, Peter J. Reece
Summary: This study introduces a phase-based imaging approach using differential interference contrast (DIC) as a means of label-free optical sensing with plasmonic nanohole arrays. By developing a colorimetric-based imaging readout and evaluating the refractive-index sensing capability using a layer-by-layer polyelectrolyte deposition model, the researchers cross-validate the DIC imaging approach and show good agreement among different measurements, opening up potential applications for rapid and multiplexed sensing using the phase response of nanoplasmonic structures.
ACS APPLIED NANO MATERIALS
(2021)
Article
Cell Biology
Mark A. Aminzadeh, Mario Fournier, Akbarshakh Akhmerov, K. Candis Jones-Ungerleider, Jackelyn B. Valle, Eduardo Marban
Summary: This study found that administering heart-derived EVs orally, combined with casein, can exert beneficial bioactivity in vivo by improving muscle function in mice with muscular dystrophy. This approach enhances uptake and significantly expands the potential therapeutic applications, making it a viable treatment strategy.
JOURNAL OF EXTRACELLULAR VESICLES
(2021)
Article
Engineering, Biomedical
Hui Zhou, Janny Pineiro Llanes, Malisa Sarntinoranont, Ghatu Subhash, Chelsey S. Simmons
Summary: The study established a method to determine the alignment of proteins in soft tissues using polarized Raman spectroscopy (PRS), which offers non-destructive, label-free sample preparation, and developed an Amplitude Alignment Metric for evaluation. The research found that this method provides a high level of alignment in soft tissues.
ACTA BIOMATERIALIA
(2021)
Article
Biochemical Research Methods
Edgar Guevara, Juan Carlos Torres-Galvan, Francisco Javier Gonzalez, Claudia Luevano-Contreras, Claudio Cayetano Castillo-Martinez, Miguel G. Ramirez-Elias
Summary: This study investigates the feasibility of using Raman spectroscopy and multivariate analysis to noninvasively screen for prediabetes and diabetes. The results suggest that Raman spectroscopy can be used to classify prediabetes and diabetes with high accuracy.
JOURNAL OF BIOPHOTONICS
(2022)
Editorial Material
Biochemical Research Methods
Edgar Guevara, Juan Carlos Torres-Galvan, Francisco Javier Gonzalez, Claudia Luevano-Contreras, Claudio Cayetano Castillo-Martinez, Miguel G. Ramirez-Elias
Summary: This letter responds to Bratchenko and Bratchenko's comment on our paper examining the feasibility of using Raman spectroscopy and machine learning for screening pre-diabetes and diabetes. We address their concerns about potential overestimation of our proposed classification models and the lack of participant age information. Our research shows high overall accuracy (94.3%) in distinguishing diabetic and control groups, with moderate performance for the prediabetic class (AUC = 0.76).
JOURNAL OF BIOPHOTONICS
(2023)
Article
Spectroscopy
Hongyang Qian, Xiaoguang Shao, Heng Zhang, Yan Wang, Shupeng Liu, Jiahua Pan, Wei Xue
Summary: This study compared the diagnostic capacities of serum and serum-derived small extracellular vesicles (EV) in common urogenital cancer using Surface-enhanced Raman spectroscopy (SERS) and Convolutional Neural Networks (CNN). The results showed that EV-based SERS analysis had higher diagnostic capacities than serum-based SERS analysis.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Chaoxiang Chen, Mengdi Sun, Xuan Liu, Weijing Wu, Liyun Su, Yumei Li, Gang Liu, Xiaomei Yan
Summary: A general and mild modification method via reduction of disulfide groups to maleimide reactive thiols was used to tether various ligands on the surface of milk-derived EVs without compromising vesicular structures. The heterogeneous nature of the functionalized samples was revealed using an ultra-sensitive nano-flow cytometer, and a magnetic separation approach was proposed to remove non-EV particles. Cellular uptake and cytotoxicity experiments demonstrated enhanced cell targeting and cargo delivery capability of the ligand conjugated EVs.
Article
Chemistry, Multidisciplinary
Ugur Parlatan, Mehmet Ozgun Ozen, Ibrahim Kecoglu, Batuhan Koyuncu, Hulya Torun, Davod Khalafkhany, Irem Loc, Mehmet Giray Ogut, Fatih Inci, Demir Akin, Ihsan Solaroglu, Nesrin Ozoren, Mehmet Burcin Unlu, Utkan Demirci
Summary: Researchers have developed a method that combines surface-enhanced Raman spectroscopy (SERS) with machine learning algorithms to classify extracellular vesicles (EVs) derived from different cell lines and determine their cellular origins. This machine learning-assisted SERS method allows for label-free investigation of EV preparations and differentiation between cancer cell-derived exosomes and healthy cell-derived exosomes, offering new avenues for early detection and monitoring of diseases.