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East China Normal University

11 ARTICLES PUBLISHED IN JoVE

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Medicine

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
Ronald X. Xu 1, Kun Huang 2, Ruogu Qin 1, Jiwei Huang 1, Jeff S. Xu 1, Liya Ding 2, Urmila S. Gnyawali 3, Gayle M. Gordillo 3, Surya C. Gnyawali 3,4, Chandan K. Sen 3
1Department of Biomedical Engineering, The Ohio State University, 2Department of Biomedical Informatics, The Ohio State University, 3Comprehensive Wound Center, The Ohio State University, 4Department of Surgery, The Ohio State University

A dual-mode imaging system was developed for non-contact assessment of cutaneous tissue oxygenation and vascular function.

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Engineering

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Olivier Morin 1, Jianli Liu 1, Kun Huang 1,2, Felippe Barbosa 3, Claude Fabre 1, Julien Laurat 1
1Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure, CNRS, 2State Key Laboratory of Precision Spectroscopy, East China Normal University, 3Instituto de Física, Universidade de São Paulo

We describe the reliable generation of non-Gaussian states of traveling optical fields, including single-photon states and coherent state superpositions, using a conditional preparation method operated on the non-classical light emitted by optical parametric oscillators. Type-I and type-II phase-matched oscillators are considered and common procedures, such as the required frequency filtering or the high-efficiency quantum state characterization by homodyning, are detailed.

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Biology

Precise, High-throughput Analysis of Bacterial Growth
Masaomi Kurokawa 1, Bei-Wen Ying 1,2
1Graduate School of Life and Environmental Sciences, University of Tsukuba, 2Institute of Biology and Information Science, East China Normal University

Quantitative evaluation of bacterial growth is essential to understanding microbial physiology as a systems-level phenomenon. A protocol for experimental manipulation and an analytical approach are introduced, allowing for precise, high-throughput analysis of bacterial growth, which is a key subject of interest in systems biology.

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Neuroscience

Quantitative Cell Biology of Neurodegeneration in Drosophila Through Unbiased Analysis of Fluorescently Tagged Proteins Using ImageJ
Jennifer M. Brazill 1, Yi Zhu 1, Chong Li 1, R. Grace Zhai 1,2
1Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, 2School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University

We have developed a simple and adaptable workflow to extract quantitative data from fluorescence-imaging-based cell biological studies of protein aggregation and autophagic flux in the central nervous system of Drosophila models of neurodegeneration.

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JoVE Journal

Identification of Homologous Recombination Events in Mouse Embryonic Stem Cells Using Southern Blotting and Polymerase Chain Reaction
Dan Zhou *1,2, Lei Tan *1, Jian Li *3, Tanbin Liu 1, Yi Hu 1, Yalan Li 1, Sachiyo Kawamoto 4, Chengyu Liu 5, Shiyin Guo 3, Aibing Wang 1
1Lab of Animal Models and Functional Genomics (LAMFG), The Key Laboratory of Animal Vaccine & Protein Engineering, College of Veterinary Medicine, Hunan Agricultural University (HUNAU), 2Department of Pathology, Georgetown University Medical School, 3College of Food Science and Technology, Hunan Agricultural University (HUNAU), 4Lab of Molecular Cardiology (LMC), National Heart, Lung, and Blood Institute (NHLBI)/National Institutes of Health (NIH), 5Transgenic Core, National Heart, Lung, and Blood Institute (NHLBI)/National Institutes of Health (NIH)

Here, we present a detailed protocol for identifying homologous recombination events that occurred in mouse embryonic stem cells using Southern blotting and/or PCR. This method is exemplified by the generation of nonmuscle myosin II genetic replacement mouse models using traditional embryonic stem cell-based homologous recombination-mediated targeting technology.

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Cancer Research

Repression of Multiple Myeloma Cell Growth In Vivo by Single-wall Carbon Nanotube (SWCNT)-delivered MALAT1 Antisense Oligos
Jianhong Lin *1,2, Yi Hu *1, Jian-Jun Zhao 1
1Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, 2Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School

This manuscript describes the synthesis of a single-wall carbon nanotube (SWCNT)-conjugated MALAT1 antisense gapmer DNA oligonucleotide (SWCNT-anti-MALAT1), which demonstrates the reliable delivery of the SWCNT and the potent therapeutic effect of anti-MALAT1 in vitro and in vivo. Methods used for synthesis, modification, conjugation, and injection of SWCNT-anti-MALAT1 are described.

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Medicine

Assessing Whole-Body Lipid-Handling Capacity in Mice
Mingyang Huang 1, Noah Mathew 1, Yi Zhu 1
1Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine

This paper provides three easy and accessible assays for assessing lipid metabolism in mice.

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Neuroscience

Inter-Brain Synchrony in Open-Ended Collaborative Learning: An fNIRS-Hyperscanning Study
Nan Zhao 1,2, Yi Zhu 1,2, Yi Hu 1,2
1School of Psychology and Cognitive Science, East China Normal University, 2Shanghai Key Laboratory of Mental Health and Crisis Intervention, East China Normal University

The protocol for conducting fNIRS hyperscanning experiments on collaborative learning dyads in a naturalistic learning environment is outlined. Further, a pipeline to analyze the Inter-Brain Synchrony (IBS) of oxygenated hemoglobin (Oxy-Hb) signals is presented.

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Neuroscience

How to Calculate and Validate Inter-brain Synchronization in a fNIRS Hyperscanning Study
Yinying Hu 1, Zixuan Wang 1, Bei Song 2, Yafeng Pan 3, Xiaojun Cheng 4, Yi Zhu 1, Yi Hu 1
1Institute of Brain and Education Innovation, School of Psychology and Cognitive Science, East China Normal University, 2Department of Musicology, Harbin Conservatory of Music, 3Department of Clinical Neuroscience, Karolinska Institutet, 4School of Psychology, Shenzhen University

The dynamics between coupled brains of individuals have been increasingly represented by inter-brain synchronization (IBS) when they coordinate with each other, mostly using simultaneous-recording signals of brains (namely hyperscanning) with fNIRS. In fNIRS hyperscanning studies, IBS has been commonly assessed through the wavelet transform coherence (WTC) method because of its advantage on expanding time series into time-frequency space where oscillations can be seen in a highly intuitive way. The observed IBS can be further validated via the permutation-based random pairing of the trial, partner, and condition. Here, a protocol is presented to describe how to obtain brain signals via fNIRS technology, calculate IBS through the WTC method, and validate IBS by permutation in a hyperscanning study. Further, we discuss the critical issues when using the above methods, including the choice of fNIRS signals, methods of data preprocessing, and optional parameters of computations. In summary, using the WTC method and permutation is a potentially standard pipeline for analyzing IBS in fNIRS hyperscanning studies, contributing to both the reproducibility and reliability of IBS.

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Neuroscience

A Mouse Model of Direct Anastomosis via the Prespinal Route for Crossing Nerve Transfer Surgery
Zhengrun Gao *1,2, Gaowei Lei *1, Zhen Pang *1, Yiming Chen 1, Shuai Zhu 1, Kun Huang 1, Weishan Lin 1, Yundong Shen 1,2,3,4,5, Wendong Xu 1,2,3,4,5
1Department of Hand Surgery, Huashan Hospital, Fudan University, 2Department of Hand and Upper Extremity Surgery, Jing‘an District Central Hospital, Fudan University, 3The National Clinical Research Center for Aging and Medicine, Fudan University, 4Institutes of Brain Science, Fudan University, 5State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center of Brain Science, Fudan University

We simulated clinical surgery to establish a protocol of direct anastomosis of bilateral brachial plexus nerves via the prespinal route in mice, contributing to the study of the neural mechanisms underlying rehabilitation upon crossing nerve transfer after central and peripheral nervous system injuries.

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Bioengineering

Clinical Microfluidic Chip Platform for the Isolation of Versatile Circulating Tumor Cells
Hongmei Chen 1, Yufeng Han 1, Qingli Li 2, Yong Zou 1, Shuangshou Wang 3, Xiaodong Jiao 4
1School of Microelectronics and Data Science, Anhui University of Technology, 2Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, 3School of Chemistry and Chemical Engineering, Anhui University of Technology, 4Department of Medical Oncology, Changzheng Hospital

The clinical microfluidic chip is an important biomedical analysis technique that simplifies clinical patient blood sample preprocessing and immunofluorescently stains circulating tumor cells (CTCs) in situ on the chip, allowing the rapid detection and identification of a single CTC.

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