1
|
Luhata LP, Yoshida Y, Usuki T. Natural products from Odontonema strictum promote neurite outgrowth in neuronal PC12 cells. Bioorg Chem 2024; 147:107389. [PMID: 38677011 DOI: 10.1016/j.bioorg.2024.107389] [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: 08/18/2023] [Revised: 04/13/2024] [Accepted: 04/19/2024] [Indexed: 04/29/2024]
Abstract
The leaves of Odontonema strictum, a tropical plant used for its antihypertensive properties, are rich in nutrients and biologically active phytochemicals, such as β-sitosterol, stigmasterol, umuravumbolide, deacetylumuravumbolide, dideacetylboronolide, deacetylboronolide, verbascoside, and isoverbascoside. In addition, its roots are rich in β-sitosterol, stigmasterol, and the iridoid glycoside β-O-methyl-unedoside. Ingestion of the roots was reported to have a sedative effect in a dog was previously reported on a dog eating the roots of this plant. In the present study, we report for the first time the cell proliferation- and neurite outgrowth-promoting effects in PC12 neuronal cells of the isolated organic compounds and crude extracts from O. strictum. Pituitary adenylate cyclase-activating peptide (PACAP) and quercetin were used as positive controls. At the concentration of 0.2 μg/mL, β-sitosterol was more potent than quercetin and displayed the same activity (>45 μm/cell) as PACAP (100 nM). At a low concentration (0.04 μg/mL), verbascoside and isoverbascoside showed the strongest neurite outgrowth-promoting effect (neurite length of 30 to 35 μm/cell). Our results indicate that phytomedicines made from O. strictum may be useful in preventing neurodegenerative diseases.
Collapse
Affiliation(s)
- Lokadi Pierre Luhata
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Yusuke Yoshida
- Sakulab Science, 2-38-34-202 Maruyama-Dai, Konan-ku, Yokohama 233-0013, Japan
| | - Toyonobu Usuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan.
| |
Collapse
|
2
|
Kwon J, Lee JS, Lee J, Na J, Sung J, Lee HJ, Kwak H, Cheong E, Cho SW, Choi HJ. Vertical Nanowire Electrode Array for Enhanced Neurogenesis of Human Neural Stem Cells via Intracellular Electrical Stimulation. NANO LETTERS 2021; 21:6343-6351. [PMID: 33998792 DOI: 10.1021/acs.nanolett.0c04635] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Extracellular electrical stimulation (ES) can provide electrical potential from outside the cell membrane, but it is often ineffective due to interference from external factors such as culture medium resistance and membrane capacitance. To address this, we developed a vertical nanowire electrode array (VNEA) to directly provide intracellular electrical potential and current to cells through nanoelectrodes. Using this approach, the cell membrane resistivity and capacitance could be excluded, allowing effective ES. Human fetal neural stem cells (hfNSCs) were cultured on the VNEA for intracellular ES. Combining the structural properties of VNEA and VNEA-mediated ES, transient nanoscale perforation of the electrode was induced, promoting cell penetration and delivering current to the cell. Intracellular ES using VNEA improved the neuronal differentiation of hfNSCs more effectively than extracellular ES and facilitated electrophysiological functional maturation of hfNSCs because of the enhanced voltage-dependent ion-channel activity. The results demonstrate that VNEA with advanced nanoelectrodes serves as a highly effective culture and stimulation platform for stem-cell neurogenesis.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Seung-Woo Cho
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
| | | |
Collapse
|
3
|
Min S, Lee HJ, Jin Y, Kim YH, Sung J, Choi HJ, Cho SW. Biphasic Electrical Pulse by a Micropillar Electrode Array Enhances Maturation and Drug Response of Reprogrammed Cardiac Spheroids. NANO LETTERS 2020; 20:6947-6956. [PMID: 32877191 DOI: 10.1021/acs.nanolett.0c01141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Direct reprogramming is an efficient strategy to produce cardiac lineage cells necessary for cardiac tissue engineering and drug testing for cardiac toxicity. However, functional maturation of reprogrammed cardiomyocytes, which is of great importance for their regenerative potential and drug response, still remains challenging. In this study, we propose a novel electrode platform to promote direct cardiac reprogramming and improve the functionality of reprogrammed cardiac cells. Nonviral cardiac reprogramming was improved via a three-dimensional spheroid culture of chemically induced cardiomyocytes exposed to a small-molecule cocktail. A micropillar electrode array providing biphasic electrical pulses mimicking the heartbeat further enhanced maturation and electrophysiological properties of reprogrammed cardiac spheroids, leading to proper responses and increased sensitivity to drugs. On the basis of our results, we conclude that our device may have a wider application in the generation of functional cardiac cells for regenerative medicine and screening of novel drugs.
Collapse
Affiliation(s)
- Sungjin Min
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyo-Jung Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Yoonhee Jin
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Yu Heun Kim
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Jaesuk Sung
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Heon-Jin Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seung-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul 03722, Republic of Korea
| |
Collapse
|
4
|
Li X, Yang W, Xie H, Wang J, Zhang L, Wang Z, Wang L. CNT/Sericin Conductive Nerve Guidance Conduit Promotes Functional Recovery of Transected Peripheral Nerve Injury in a Rat Model. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36860-36872. [PMID: 32649170 DOI: 10.1021/acsami.0c08457] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Peripheral nerve injury usually leads to poor outcomes such as painful neuropathies and disabilities. Autogenous nerve grafting is the current gold standard; however, the limited source of a donor nerve remains a problem. Numerous tissue engineering nerve guidance conduits have been developed as substitutes for autografts. However, a few conduits can achieve the reparative effect equivalent to autografts. Here, we report for the development and application of a carbon nanotube (CNT)/sericin nerve conduit with electrical conductivity and suitable mechanical properties for nerve repair. This CNT/sericin conduit possesses favorable properties including biocompatibility, biodegradability, porous microarchitecture, and suitable swelling property. We thus applied this conduit for bridging a 10 mm gap defect of a transected sciatic nerve combined with electrical stimulation (ES) in a rat injury model. By the end of 12 weeks, we observed that the CNT/sericin conduit combined with electrical stimulation could effectively promote both structural repair and functional recovery comparable to those of the autografts, evidenced by the morphological and histological analyses, electrophysiological responses, functional studies, and target muscle reinnervation evaluations. These findings suggest that this electric conductive CNT/sericin conduit combined with electrical stimulation may have the potential to serve as a new alternative for the repair of transected peripheral nerves.
Collapse
Affiliation(s)
- Xiaolin Li
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wen Yang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hongjian Xie
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jian Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lei Zhang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| |
Collapse
|
5
|
Abstract
Human immunodeficiency virus (HIV), a type of lentivirus (a subgroup of retrovirus), causes acquired immunodeficiency syndrome (AIDS). This pathophysiologic state destroys the immune system allowing opportunistic infections, cancer and other life-threatening diseases to thrive. Although many analytic tools including enzyme-linked immunoassay (ELISA), indirect and line immunoassay, Western blotting, radio-immunoprecipitation, nucleic acid amplification testing (NAAT) have been developed to detect HIV, recent developments in nanosensor technology have prompted its use as a novel diagnostic approach. Nanosensors provide analytical information about behavior and characteristics of particles by using biochemical reactions mediated by enzymes, immune components, cells and tissues. These reactions are transformed into decipherable signals, i.e., electrical, thermal, optical, using nano to micro scale technology. Nanosensors are capable of both quantitative and qualitative detection of HIV, are highly specific and sensitive and provide rapid reproducible results. Nanosensor technology can trace infant infection during mother-to-child transmission, the latent HIV pool and monitor anti-HIV therapy. In this chapter, we review nanosensor analytics including electrochemical, optical, piezoelectric, SERS-based lateral flow assay, microfluidic channel-based biosensors in the detection of HIV. Other techniques in combination with different biorecognition elements (aptamers, antibodies, oligonucleotides) are also discussed.
Collapse
Affiliation(s)
- Sarthak Nandi
- DBT-National Institute of Animal Biotechnology (DBT-NIAB), Hyderabad, Telangana, India
| | - Ayusi Mondal
- DBT-National Institute of Animal Biotechnology (DBT-NIAB), Hyderabad, Telangana, India
| | - Akanksha Roberts
- DBT-National Institute of Animal Biotechnology (DBT-NIAB), Hyderabad, Telangana, India
| | - Sonu Gandhi
- DBT-National Institute of Animal Biotechnology (DBT-NIAB), Hyderabad, Telangana, India.
| |
Collapse
|
6
|
Yoo J, Kwak H, Kwon J, Ha GE, Lee EH, Song S, Na J, Lee HJ, Lee J, Hwangbo A, Cha E, Chae Y, Cheong E, Choi HJ. Long-term Intracellular Recording of Optogenetically-induced Electrical Activities using Vertical Nanowire Multi Electrode Array. Sci Rep 2020; 10:4279. [PMID: 32152369 PMCID: PMC7062878 DOI: 10.1038/s41598-020-61325-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/21/2020] [Indexed: 12/11/2022] Open
Abstract
Continuous recording of intracellular activities in single cells is required for deciphering rare, dynamic and heterogeneous cell responses, which are missed by population or brief single-cell recording. Even if the field of intracellular recording is constantly proceeding, several technical challenges are still remained to conquer this important approach. Here, we demonstrate long-term intracellular recording by combining a vertical nanowire multi electrode array (VNMEA) with optogenetic stimulation to minimally disrupt cell survival and functions during intracellular access and measurement. We synthesized small-diameter and high-aspect-ratio silicon nanowires to spontaneously penetrate into single cells, and used light to modulate the cell's responsiveness. The light-induced intra- and extracellular activities of individual optogenetically-modified cells were measured simultaneously, and each cell showed distinctly different measurement characteristics according to the cell-electrode configuration. Intracellular recordings were achieved continuously and reliably without signal interference and attenuation over 24 hours. The integration of two controllable techniques, vertically grown nanowire electrodes and optogenetics, expands the strategies for discovering the mechanisms for crucial physiological and dynamic processes in various types of cells.
Collapse
Affiliation(s)
- Jisoo Yoo
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hankyul Kwak
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Juyoung Kwon
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Go Eun Ha
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Elliot H Lee
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Seungwoo Song
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jukwan Na
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hyo-Jung Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jaejun Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Areum Hwangbo
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Eunkyung Cha
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Youngcheol Chae
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Eunji Cheong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea. .,Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 03722, Republic of Korea.
| | - Heon-Jin Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
| |
Collapse
|
7
|
Kwon J, Ko S, Lee J, Na J, Sung J, Lee HJ, Lee S, Chung S, Choi HJ. Nanoelectrode-mediated single neuron activation. NANOSCALE 2020; 12:4709-4718. [PMID: 32049079 DOI: 10.1039/c9nr10559j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Elucidating cellular dynamics at the level of a single neuron and its associated role within neuronal circuits is essential for interpreting the complex nature of the brain. To investigate the operation of neural activity within its network, it is necessary to precisely manipulate the activation of each neuron and verify its propagation path via the synaptic connection. In this study, by exploiting the intrinsic physical and electrical advantages of a nanoelectrode, a vertical nanowire multi electrode array (VNMEA) is developed as a neuronal activation platform presenting the spatially confined effect on the intracellular space of individual cells. VNMEA makes a distinct difference between the interior and exterior cell potential and the current density, deriving the superior effects on activating Ca2+ responses compared to extracellular methods under the same conditions, with about 2.9-fold higher amplitude of Ca2+ elevation and a 2.6-fold faster recovery rate. Moreover, the synchronized propagation of evoked activities is shown in connected neurons implying cell-to-cell communications following the intracellular stimulation. The simulation and experimental consequences prove the outstanding property of temporal/spatial confinement of VNMEA-mediated intracellular stimulation to activate a single neuron and show its potential in localizing spiking neurons within neuronal populations, which may be utilized to reveal the connection and activation modalities of neural networks.
Collapse
Affiliation(s)
- Juyoung Kwon
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Sukjin Ko
- Brain Korea 21 Plus Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
| | - Jaejun Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Jukwan Na
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Jaesuk Sung
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Hyo-Jung Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Seonghyeon Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Seungsoo Chung
- Brain Korea 21 Plus Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
| | - Heon-Jin Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| |
Collapse
|
8
|
Kee S, Zhang P, Travas-Sejdic J. Direct writing of 3D conjugated polymer micro/nanostructures for organic electronics and bioelectronics. Polym Chem 2020. [DOI: 10.1039/d0py00719f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
3D direct writing and meniscus-guided pen writing methods, which are capable of fabricating 3D micro/nanostructures from soluble π-conjugated polymers (CPs) and CP precursors, and recent advances in these techniques are addressed in this review.
Collapse
Affiliation(s)
- Seyoung Kee
- Polymer Biointerface Centre
- School of Chemical Sciences
- The University of Auckland
- Auckland
- New Zealand
| | - Peikai Zhang
- Polymer Biointerface Centre
- School of Chemical Sciences
- The University of Auckland
- Auckland
- New Zealand
| | - Jadranka Travas-Sejdic
- Polymer Biointerface Centre
- School of Chemical Sciences
- The University of Auckland
- Auckland
- New Zealand
| |
Collapse
|
9
|
Na J, Hong MH, Choi JS, Kwak H, Song S, Kim H, Chae Y, Cheong E, Lee JH, Lim YB, Choi HJ. Real-Time Detection of Markers in Blood. NANO LETTERS 2019; 19:2291-2298. [PMID: 30860390 DOI: 10.1021/acs.nanolett.8b04775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The real-time selective detection of disease-related markers in blood using biosensors has great potential for use in the early diagnosis of diseases and infections. However, this potential has not been realized thus far due to difficulties in interfacing the sensor with blood and achieving transparent circuits that are essential for detecting of target markers (e.g., protein, ions, etc.) in a complex blood environment. Herein, we demonstrate the real-time detection of a specific protein and ion in blood without a skin incision. Complementary metal-oxide-semiconductor technology was used to fabricate silicon micropillar array (SiMPA) electrodes with a height greater than 600 μm, and the surface of the SiMPA electrodes was functionalized with a self-assembling artificial peptide (SAP) as a receptor for target markers in blood, i.e., cholera toxin (CTX) and mercury(II) ions (Hg). The detection of CTX was investigated in both in vitro (phosphate-buffered saline and human blood serum, HBO model) and in vivo (mouse model) modes via impedance analysis. In the in vivo mode, the SiMPA pierces the skin, comes into contact with the blood system, and creates comprehensive circuits that include all the elements such as electrodes, blood, and receptors. The SiMPA achieves electrically transparent circuits and, thus, can selectively detect CTX in the blood in real time with a high sensitivity of 50 pM and 5 nM in the in vitro and in vivo modes, respectively. Mercury(II) ions can also be detected in both the in vitro and the in vivo modes by changing the SAP. The results illustrate that a robust sensor that can detect a variety of molecular species in the blood system in real time that will be helpful for the early diagnosis of disease and infections.
Collapse
Affiliation(s)
| | - Min-Ho Hong
- Nature Inspired Materials Processing Research Center, Department of Energy Science , Sungkyunkwan University , Suwon 16419 , Republic of Korea
| | | | | | | | | | | | | | - Ju Hee Lee
- Department of Dermatology, Cutaneous Biology Research Institute , Yonsei University College of Medicine , Seoul , 03722 , Republic of Korea
| | | | | |
Collapse
|
10
|
Jing W, Zuo D, Cai Q, Chen G, Wang L, Yang X, Zhong W. Promoting neural transdifferentiation of BMSCs via applying synergetic multiple factors for nerve regeneration. Exp Cell Res 2019; 375:80-91. [DOI: 10.1016/j.yexcr.2018.12.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/22/2018] [Accepted: 12/27/2018] [Indexed: 12/20/2022]
|
11
|
Jing W, Zhang Y, Cai Q, Chen G, Wang L, Yang X, Zhong W. Study of Electrical Stimulation with Different Electric-Field Intensities in the Regulation of the Differentiation of PC12 Cells. ACS Chem Neurosci 2019; 10:348-357. [PMID: 30212623 DOI: 10.1021/acschemneuro.8b00286] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The strategy of using electrical stimulation (ES) to promote the neural differentiation and regeneration of injured nerves is proven feasible. Study of the possible molecular mechanisms in relation to this ES promotion effect should be helpful for understanding the phenomenon. In this study, it was identified that the neuronal differentiation of PC12 cells was enhanced when the electric field intensity was in the range of 30-80 mV/mm, and a lower or higher electric-field intensity displayed inferior effects. Under ES, however, levels of intracellular reactive oxygen species (ROS), intracellular Ca2+ dynamics, and expression of TREK-1 were measured as being gradually increasing alongside higher electric-field intensity. In trying to understand the relationship between the ES enhancement on differentiation and these variations in cell activities, parallel experiments were conducted by introducing exogeneous H2O2 into culture systems at different concentrations. Similarly, the effects of H2O2 concentration on the neuronal differentiation of PC12 cells, intracellular ROS and Ca2+ levels, and TREK-1 expression were systematically characterized. In comparative studies, it was found in two cases that ES of 50 mV/mm for 2 h/day and H2O2 of 5 μM in culture medium shared comparable results for intracellular ROS and Ca2+ levels and TREK-1 expression. Higher H2O2 concentrations (e.g., 10 and 20 μM) demonstrated adverse effects on cell differentiation and caused DNA damage. A stronger ES (e.g., 100 mV/mm), being associated with a higher intracellular ROS level, also resulted in weaker enhancement of the neuronal differentiation of PC12 cells. These facts suggested that the intracellular ROS generated under ES might be an intermediate signal transducer involved in cascade reactions relative to cell differentiation.
Collapse
Affiliation(s)
- Wei Jing
- State Key Laboratory of Organic−Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yifan Zhang
- State Key Laboratory of Organic−Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Qing Cai
- State Key Laboratory of Organic−Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Guoqiang Chen
- Department of Neurosurgery, Aviation General Hospital of China Medical University, Beijing 100012, PR China
| | - Lin Wang
- Department of Neurosurgery, Aviation General Hospital of China Medical University, Beijing 100012, PR China
| | - Xiaoping Yang
- State Key Laboratory of Organic−Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Weihong Zhong
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| |
Collapse
|
12
|
Zhou Z, Liu X, Wu W, Park S, Miller II AL, Terzic A, Lu L. Effective nerve cell modulation by electrical stimulation of carbon nanotube embedded conductive polymeric scaffolds. Biomater Sci 2018; 6:2375-2385. [DOI: 10.1039/c8bm00553b] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Biomimetic biomaterials require good biocompatibility and bioactivity to serve as appropriate scaffolds for tissue engineering applications.
Collapse
Affiliation(s)
- Zifei Zhou
- Department of Physiology and Biomedical Engineering and Department of Orthopedic Surgery
- Mayo Clinic
- Rochester
- USA
- Department of Orthopedic Surgery
| | - Xifeng Liu
- Department of Physiology and Biomedical Engineering and Department of Orthopedic Surgery
- Mayo Clinic
- Rochester
- USA
| | - Wei Wu
- Department of Physiology and Biomedical Engineering and Department of Orthopedic Surgery
- Mayo Clinic
- Rochester
- USA
- Department of Orthopedics Surgery
| | - Sungjo Park
- Department of Cardiovascular Diseases and Center for Regenerative Medicine
- Mayo Clinic
- Rochester
- USA
| | - A. Lee Miller II
- Department of Physiology and Biomedical Engineering and Department of Orthopedic Surgery
- Mayo Clinic
- Rochester
- USA
| | - Andre Terzic
- Department of Cardiovascular Diseases and Center for Regenerative Medicine
- Mayo Clinic
- Rochester
- USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering and Department of Orthopedic Surgery
- Mayo Clinic
- Rochester
- USA
| |
Collapse
|
13
|
Wu F, Jin L, Zheng X, Yan B, Tang P, Yang H, Deng W, Yang W. Self-Powered Nanocomposites under an External Rotating Magnetic Field for Noninvasive External Power Supply Electrical Stimulation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:38323-38335. [PMID: 29039642 DOI: 10.1021/acsami.7b12854] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Electrical stimulation in biology and gene expression has attracted considerable attention in recent years. However, it is inconvenient that the electric stimulation needs to be supplied an implanted power-transported wire connecting the external power supply. Here, we fabricated a self-powered composite nanofiber (CNF) and developed an electric generating system to realize electrical stimulation based on the electromagnetic induction effect under an external rotating magnetic field. The self-powered CNFs generating an electric signal consist of modified MWNTs (m-MWNTs) coated Fe3O4/PCL fibers. Moreover, the output current of the nanocomposites can be increased due to the presence of the magnetic nanoparticles during an external magnetic field is applied. In this paper, these CNFs were employed to replace a bullfrog's sciatic nerve and to realize the effective functional electrical stimulation. The cytotoxicity assays and animal tests of the nanocomposites were also used to evaluate the biocompatibility and tissue integration. These results demonstrated that this self-powered CNF not only plays a role as power source but also can act as an external power supply under an external rotating magnetic field for noninvasive the replacement of injured nerve.
Collapse
Affiliation(s)
- Fengluan Wu
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Long Jin
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Xiaotong Zheng
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Bingyun Yan
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Pandeng Tang
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Huikai Yang
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Weili Deng
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Weiqing Yang
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| |
Collapse
|
14
|
Lee J, Hong MH, Han S, Na J, Kim I, Kwon YJ, Lim YB, Choi HJ. Sensitive and Selective Detection of HIV-1 RRE RNA Using Vertical Silicon Nanowire Electrode Array. NANOSCALE RESEARCH LETTERS 2016; 11:341. [PMID: 27448026 PMCID: PMC4958096 DOI: 10.1186/s11671-016-1504-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 05/30/2016] [Indexed: 06/06/2023]
Abstract
In this study, HIV-1 Rev response element (RRE) RNA was detected via an Au-coated vertical silicon nanowire electrode array (VSNEA). The VSNEA was fabricated by combining bottom-up and top-down approaches and then immobilized by artificial peptides for the recognition of HIV-1 RRE. Differential pulse voltammetry (DPV) analysis was used to measure the electrochemical response of the peptide-immobilized VSNEA to the concentration and types of HIV-1 RRE RNA. DPV peaks showed linearity to the concentration of RNA with a detection limit down to 1.513 fM. It also showed the clear different peaks to the mutated HIV-1 RRE RNA. The high sensitivity and selectivity of VSNEA for the detection of HIV-1 RRE RNA may be attributed to the high surface-to-volume ratio and total overlap diffusion mode of ions of the one-dimensional nanowire electrodes.
Collapse
Affiliation(s)
- Jaehyung Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Min-Ho Hong
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Sanghun Han
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Jukwan Na
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Ilsoo Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Yong-Joon Kwon
- Defense Advanced R&D Center, Agency for Defense Development, Daejeon, 34186, South Korea
| | - Yong-Beom Lim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea.
| | - Heon-Jin Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea.
| |
Collapse
|
15
|
Kim H, Kang DH, Koo KH, Lee S, Kim SM, Kim J, Yoon MH, Kim SY, Yang EG. Vertical nanocolumn-assisted pluripotent stem cell colony formation with minimal cell-penetration. NANOSCALE 2016; 8:18087-18097. [PMID: 27714141 DOI: 10.1039/c6nr06203b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The biological applications of vertical nanostructures mostly rely on their intracellular accessibility through the cellular membrane by promoting cell-to-nanostructure interactions. Herein, we report a seemingly counter-intuitive approach for the spontaneous formation of mouse induced pluripotent stem cell (iPSC)-derived three-dimensional spherical colonies with unlimited self-renewal and differentiation potential. The comprehensive analyses of iPSCs cultured on vertical silicon nanocolumn arrays (vSNAs) with various nanocolumn geometries show reduced cell-to-substrate adhesion and enhanced cell-to-cell interactions under optimized vSNA conditions, successfully accommodating the spontaneous production of iPSC-derived spherical colonies. Remarkably, these colonies which were only minimally penetrated by and thereby easily harvested from wafer-sized vSNAs display a substantial increase in pluripotency marker expression and successfully differentiate into three germ layers. Our vSNAs capable of large-scale fabrication, efficient for spherical colony formation, and reusable for multiple iPSC culture could serve as a broad-impact culture platform for stem cell research.
Collapse
Affiliation(s)
- Hyunju Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea.
| | - Dong Hee Kang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea.
| | - Kyung Hee Koo
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea.
| | - Seyeong Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea.
| | - Seong-Min Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea.
| | - Janghwan Kim
- Stem Cell Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon, 34141, Republic of Korea and Department of Functional Genomics, Korea University of Science and Technology (UST), KRIBB campus, Daejeon, 34141, Republic of Korea
| | - Myung-Han Yoon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea.
| | - So Yeon Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. and Department of Biomedical Engineering, Korea University of Science and Technology (UST), KIST campus, Seoul 02792, Republic of Korea
| | - Eun Gyeong Yang
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. and Department of Biological Chemistry, Korea University of Science and Technology (UST), KIST campus, Seoul 02792, Republic of Korea
| |
Collapse
|
16
|
Xu D, Fan L, Gao L, Xiong Y, Wang Y, Ye Q, Yu A, Dai H, Yin Y, Cai J, Zhang L. Micro-Nanostructured Polyaniline Assembled in Cellulose Matrix via Interfacial Polymerization for Applications in Nerve Regeneration. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17090-7. [PMID: 27314673 DOI: 10.1021/acsami.6b03555] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Conducting polymers have emerged as frontrunners to be alternatives for nerve regeneration, showing a possibility of the application of polyaniline (PANI) as the nerve guidance conduit. In the present work, the cellulose hydrogel was used as template to in situ synthesize PANI via the limited interfacial polymerization method, leading to one conductive side in the polymer. PANI sub-micrometer dendritic particles with mean diameter of ∼300 nm consisting of the PANI nanofibers and nanoparticles were uniformly assembled into the cellulose matrix. The hydrophobic PANI nanoparticles were immobilized in the hydrophilic cellulose via the phytic acid as "bridge" at presence of water through hydrogen bonding interaction. The PANI/cellulose composite hydrogels exhibited good mechanical properties and biocompatibility as well as excellent guiding capacity for the sciatic nerve regeneration of adult Sprague-Dawley rats without any extra treatment. On the basis of the fact that the pure cellulose hydrogel was an inert material for the neural repair, PANI played an indispensable role on the peripheral nerve regeneration. The hierarchical micro-nanostructure and electrical conductivity of PANI could remarkably induce the adhesion and guiding extension of neurons, showing its great potential in biomedical materials.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Honglian Dai
- Department of Pharmaceutical Engineering, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Yixia Yin
- Department of Pharmaceutical Engineering, Wuhan University of Technology , Wuhan 430070, P. R. China
| | | | | |
Collapse
|
17
|
Choi S, Kim H, Kim SY, Yang EG. Probing protein complexes inside living cells using a silicon nanowire-based pull-down assay. NANOSCALE 2016; 8:11380-11384. [PMID: 27198202 DOI: 10.1039/c6nr00171h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Most proteins perform their functions as interacting complexes. Here we propose a novel method for capturing an intracellular protein and its interacting partner out of living cells by utilizing intracellular access of antibody modified vertical silicon nanowire arrays whose surface is covered with a polyethylene glycol layer to prevent strong cell adhesion. Such a feature facilitates the removal of cells by simple washing, enabling subsequent detection of a pulled-down protein and its interacting partner, and further assessment of a drug-induced change in the interacting complex. Our new SiNW-based tool is thus suitable for authentication of protein networks inside living cells.
Collapse
Affiliation(s)
- Sojoong Choi
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea.
| | - Hyunju Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea.
| | - So Yeon Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. and Department of Biomedical Engineering, Korea University of Science and Technology (UST), KIST campus, Seoul 02792, Republic of Korea
| | - Eun Gyeong Yang
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. and Department of Biological Chemistry, Korea University of Science and Technology (UST), KIST campus, Seoul 02792, Republic of Korea
| |
Collapse
|