Biophysics

Article Biophysics

Biohybrid tongue based on hypothalamic neuronal network-on-a-chip for real-time blood glucose sensing and assessment

Chunlian Qin, Qunchen Yuan, Mengxue Liu, Liujing Zhuang, Lizhou Xu, Ping Wang

Summary: This study proposes a biohybrid tongue based on hypothalamic neuronal network coupled with microelectrode array for real-time glucose perception. Hypothalamic neuronal cultures were cultivated on a two-dimensional brain-on-chip device, enabling the formation of neuronal networks and electrophysiological signal detection. The study investigates the endogenous expression of sweet taste receptors in hypothalamic neuronal cells and explores the spike signal response to sucrose and glucose stimulation. The biohybrid tongue provides insights into glucose sensing mechanisms and hypothalamic neuronal function.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Cheap and portable paper chip with terrific oxidase-like activity and SERS enhancement performance for SERS-colorimetric bimodal detection of intracellular glutathione

Linjie Wang, Yixin Chen, Yang Ji, Shujun Zheng, Fei Wang, Caolong Li

Summary: A paper-based biosensor incorporating surface-enhanced Raman spectroscopy (SERS) and colorimetric detection has been developed for efficient quantification of intracellular glutathione (GSH). The biosensor exhibits excellent selectivity, stability, and precision, with low detection limits in both SERS and colorimetric modes. It has been successfully utilized for intracellular GSH detection and validated against a commercial GSH assay kit.

BIOSENSORS & BIOELECTRONICS (2024)

Review Biophysics

Protease detection in the biosensor era: A review

Pratika Rai, Sabrina N. Hoba, Celine Buchmann, Robert J. Subirana-Slotos, Christian Kersten, Tanja Schirmeister, Kristina Endres, Bernd Bufe, Alexey Tarasov

Summary: Proteases have been proposed as potential biomarkers for various pathological conditions. The development of protease biosensors offers a more efficient way to investigate dysregulated proteases. This review article presents different optical and electrochemical detection methods for designing biosensors for all major protease families.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Rapid estimation of electroporation-dependent tissue properties in canine lung tumors using a deep neural network

Edward J. Jacobs, Kenneth N. Aycock, Pedro P. Santos, Joanne L. Tuohy, Rafael V. Davalos

Summary: The efficiency of electroporation treatments depends on the application of a critical electric field over the targeted tissue volume. A deep neural network trained on finite element model simulations was developed to predict tissue properties from a measured voltage ramp, showing minimal test error and great utility in clinical applications. The platform can quickly ascertain patient-specific tissue properties required for treatment planning.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Precise determination of reaction conditions for accurate quantification in digital PCR by real-time fluorescence monitoring within microwells

Qi Xu, Jinze Li, Zhiqi Zhang, Qi Yang, Wei Zhang, Jia Yao, Yaxin Zhang, Yueye Zhang, Zhen Guo, Chao Li, Shuli Li, Changsong Zhang, Chuanxin Wang, Lutao Du, Chuanyu Li, Lianqun Zhou

Summary: Real-time digital polymerase chain reaction (qdPCR) integrates absolute quantification with process information, improving precision in molecular diagnostics. We propose a novel approach to determine optimal reaction conditions for qdPCR using real-time fluorescence monitoring in microwells. By leveraging an ultrathin laminated chip (UTL chip), we achieve faster amplification and higher accuracy, showing promise for molecular diagnostics.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Lithography-free interdigitated electrodes by trench-filling patterning on polymer substrate for Alzheimer's disease detection

M. Mahabubur Rahman, Nabil H. Bhuiyan, Minjun Park, M. Jalal Uddin, Gyeong J. Jin, Joon S. Shim

Summary: In this work, a novel and low-cost fabrication technology for interdigitated electrode array (IDA) electrodes on the polymer substrate was developed. The fabricated IDA electrode showed high sensitivity and detection limit in electrochemical detection of biomarkers.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

A cost-effective, mix & act G-quadruplex/Cu (II) metal-nanozyme-based ratiometric fluorescent platform for highly sensitive and selective cysteine/ bleomycin detection and multilevel contrary logic computing

Jun Wang, Jiawen Han, Juan Wang, Xujuan Lv, Daoqing Fan, Shaojun Dong

Summary: This study reports a ratiometric fluorescent platform based on nanozymes for the highly sensitive detection of cysteine and bleomycin. The platform exhibits acceptable performance and high selectivity, and shows good performance in human serum samples. Additionally, DNA contrary logic pairs and multilevel concatenated circuits were fabricated, enriching the building blocks of biocomputing.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Fluorescence lifetime imaging microscopy for early diagnosis and severity prediction of preeclampsia with Nile Blue probe

Yinru Zhu, Benqing Wu, Xinwei Gao, Yong Guo, Xiao Peng, Luwei Wang, Xuewu Tian, Jian Wang, Wei Yan, Hui Zhang, Junle Qu

Summary: Preeclampsia is a common pregnancy complication and the leading cause of maternal and perinatal mortality. However, early diagnostic methods for preeclampsia are still rare. This study explores the possibility of using fluorescence lifetime imaging and the Nile Blue probe for the early diagnosis and severity prediction of preeclampsia.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Magnetic Janus micromotors for fluorescence biosensing of tacrolimus in oral fluids

Bettina Glahn-Martinez, Beatriz Jurado-Sanchez, Elena Benito-Pena, Alberto Escarpa, Maria C. Moreno-Bondi

Summary: This study developed a novel bioassay for monitoring FK506 using magnetic Janus micromotors and a recombinant chimera receptor. The bioassay utilized a fluorescence competitive method between the drug and the micromotors to achieve a one-step assay without washing steps. The method exhibited a high limit of detection and dynamic range, and was able to operate in raw samples.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

3D-printed, aptamer-based microneedle sensor arrays using magnetic placement on live rats for pharmacokinetic measurements in interstitial fluid

Maria Reynoso, An-Yi Chang, Yao Wu, Raygan Murray, Smrithi Suresh, Yuma Dugas, Joseph Wang, Netzahualcoyotl Arroyo-Curras

Summary: Molecular monitoring in the dermal interstitial fluid (ISF) has the potential to screen markers of health and disease status in a painless manner. This study presents an innovative approach to address the poor patch stability of microneedle sensors on live rodents by using magnetic placement. Real-time pharmacokinetic measurements in live rats demonstrate the effectiveness of this approach. The future prospects and challenges of this technology are also discussed.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

3D plasmonic hexaplex paper sensor for label-free human saliva sensing and machine learning-assisted early-stage lung cancer screening

Vo Thi Nhat Linh, Hongyoon Kim, Min-Young Lee, Jungho Mun, Yeseul Kim, Byeong-Ho Jeong, Sung-Gyu Park, Dong-Ho Kim, Junsuk Rho, Ho Sang Jung

Summary: This study developed a flexible and highly absorptive three-dimensional plasmonic nanostructure sensor for rapid lung cancer screening and diagnosis. The sensor successfully detected and classified lung cancer in patient saliva samples. Additionally, the study investigated important Raman peak positions related to different stages of lung cancer, providing insights for early-stage cancer diagnosis.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Detection of glucose transporter 1 in living cells for assessment of tumor development and therapy using an electrochemical biosensor

Kaijing Wang, Congcong Zhang, Han Zhou, Hongshuai Wei, Liping Yin, Tingting Zhang, Yunqing Zhi, Jun Zhou, Bingkai Han, Zhenguo Zhang, Xin Du

Summary: In this study, an electrochemical platform for detecting GLUT-1 on living cells was developed using a composite of reduced graphene oxide-multi-wall carbon nanotube. The sensor demonstrated good performance in detecting GLUT-1 expression on cells and showed consistency with traditional detection methods. It has the potential to assess malignancy level and glucose uptake pathways in tumor cells while reducing medical costs.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

A codon-based live-cell biomonitoring system for assessing intracellular phenylalanine bioavailability in cyanobacteria

Haojie Jin, Jiaqi Zhang, Yan Wang, Wanzhao Ge, Yike Jing, Xiaoyu Cao, Yixin Huo, Yujie Fu

Summary: In this study, a live-cell bio-monitoring system was proposed to assess phenylalanine bioavailability in real time in cyanobacteria based on codon de-generacy and species-specific usage bias. Increasing intracellular phenylalanine bioavailability could promote cell growth and provide a screening method for phenylalanine content.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Emerging multianalyte biosensors for the simultaneous detection of protein and nucleic acid biomarkers

Anna Klebes, H. Ceren Ates, Rene D. Verboket, Gerald A. Urban, Felix von Stetten, Can Dincer, Susanna M. Frueh

Summary: This review discusses the development and application of multianalyte biosensors. Simultaneous detection of protein and nucleic acid biomarkers is crucial for improving diagnostic accuracy and therapeutic success. The review also highlights the importance of multianalyte analysis in the field of single-cell multiomics and discusses the potential of multianalyte biosensors in medical diagnostics.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Tracking the EMT-like phenotype switching during targeted therapy in melanoma by analyzing extracellular vesicle phenotypes

Quan Zhou, Jing Wang, Zhen Zhang, Alain Wuethrich, Richard J. Lobb, Matt Trau

Summary: This study presents a biosensor for sensitive detection of EMT-associated biomarkers on extracellular vesicles (EVs) surfaces during targeted therapy. Through longitudinal monitoring of patients, the biosensor shows its ability to identify the EMT-like phenotype switching on circulating EVs during the development of resistance.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biochemistry & Molecular Biology

Prevention of vincristine-induced peripheral neuropathy by protecting the endothelial glycocalyx shedding

Kazufumi Ohmura, Takamasa Kinoshita, Hiroyuki Tomita, Hideshi Okada, Masayoshi Shimizu, Kosuke Mori, Toshiaki Taniguchi, Akio Suzuki, Toru Iwama, Akira Hara

Summary: The study found that Vincristine-induced peripheral neuropathy can be improved by protecting the endothelial glycocalyx. The results suggest that nafamostat may be a potential new drug for the treatment of VIPN.

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS (2024)

Article Biochemistry & Molecular Biology

CTRP4 ameliorates inflammation, thereby attenuating the interaction between HUVECs and THP-1 monocytes through SIRT6/Nrf2 signaling

Jaw Long Sun, Jae Hak Ryu, Wonjun Cho, Heeseung Oh, A. M. Abd El-Aty, Didem Ozkal Eminoglu, Ji Hoon Jeong, Tae Woo Jung

Summary: The study aimed to investigate the impact of CTRP4 on inflammation and the interaction between endothelial cells and monocytes under hyperlipidemic conditions. The results showed that CTRP4 reduced the attachment of THP-1 monocytes to HUVECs and decreased inflammation indicators in experimental cells exposed to hyperlipidemic conditions. Additionally, CTRP4 improved the interaction between endothelial cells and monocytes through the SIRT6/Nrf2-dependent pathway.

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS (2024)

Article Biochemistry & Molecular Biology

YRNA and tRNA fragments can differentiate benign from malignant canine mammary gland tumors

M. D. Nazmul Hasan, Md Mahfuzur Rahman, Al Asmaul Husna, Nobuhiro Nozaki, Osamu Yamato, Naoki Miura

Summary: This study investigated the expression of ncRNAs other than miRNAs in different histologic subtypes of canine mammary gland tumors (MGT). Three aberrantly expressed ncRNAs were identified as potential biomarkers for differentiating MGT subtypes. YRNA and tRFs expression levels were found to be decreased in metastatic compared to primary MGT cell lines.

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS (2024)

Article Biochemistry & Molecular Biology

Hole behavior captured by analysis of instantaneous amplitude and phase of sarcosynced oscillations reveals wave characteristics of sarcomeric oscillations

Seine A. Shintani

Summary: In this study, the researchers used signal analysis to study the instantaneous amplitude and phase of sarcomeric oscillations in skeletal muscle. They identified two types of oscillations, sarcomeric oscillations and sarcosynced oscillations, and visualized their behavior during propagating waves. The researchers discovered the presence of sarcomeric defect holes and sarcomeric collision holes, which are important indicators for understanding the oscillation properties of sarcomeres. This finding has important implications for improving our understanding of muscle function and its regulatory mechanisms.

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS (2024)

Article Biochemistry & Molecular Biology

Interaction of gallium, indium, and vanadyl curcumin complexes with hen egg-white lysozyme (HEWL): Mechanistic aspects and evaluation of antiamyloidogenic activity

Amin Sahraei, Mohammad Javad Shamsoddini, Fakhrossadat Mohammadi, Leila Hassani

Summary: This study explored the inhibitory effects of gallium curcumin, indium curcumin, and vanadyl curcumin on the amyloid fibrillation of hen egg white lysozyme, as well as the binding interactions of these metal complexes with the enzyme. The results showed that indium curcumin and vanadyl curcumin exhibited higher binding affinities and stronger inhibitory effects on amyloid fibrillation compared to gallium curcumin.

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS (2024)