1
|
Jeong JY, Cha YK, Ahn SR, Shin J, Choi Y, Park TH, Hong S. Ultrasensitive Bioelectronic Tongue Based on the Venus Flytrap Domain of a Human Sweet Taste Receptor. ACS Appl Mater Interfaces 2022; 14:2478-2487. [PMID: 34989242 DOI: 10.1021/acsami.1c17349] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Sweet taste is an important factor that regulates calorie intake and contributes to food preferences in humans and animals. Therefore, the evaluation of sweet substances is essential for various fields such as healthcare, food, and pharmaceutical industries. Sweet tastants are detected by sweet taste receptors which are class C G-protein-coupled receptors. T1R2 venus flytrap (VFT) of the sweet taste receptor is known as a primary ligand-binding domain for sweet tastants. In this study, we developed an ultrasensitive artificial sweet taste bioelectronic tongue based on the T1R2 VFT of a human sweet taste receptor. Here, the T1R2 VFT of a human sweet taste receptor was successfully overexpressed in a bacterial expression system. A T1R2 VFT-immobilized carbon nanotube field-effect transistor with floating electrodes was exploited as an artificial sweet taste sensory system. Significantly, our T1R2 VFT-functionalized bioelectronic tongue could be used to detect solutions of sweet tastants down to 0.1 fM and selectively discriminate sweet substances from other taste substances. Furthermore, our device could be used to monitor the response of the T1R2 VFT domain of a sweet taste receptor to sweet substances in real food environments such as apple juice and chamomile herb tea. Moreover, our device was used to evaluate the inhibition and enhancement effects on sweet taste receptors by zinc ions and chamomile tea, respectively. In addition, our device demonstrated long-term storability and reusability. In this respect, our sweet taste bioelectronic tongue could be a promising tool for various basic research and industrial applications.
Collapse
Affiliation(s)
- Jin-Young Jeong
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Yeon Kyung Cha
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 08826, Korea
| | - Sae Ryun Ahn
- Industry Collaboration Center, Industry-Academic Cooperation Foundation, Sookmyung Women's University, Seoul 04310, Korea
| | - Junghyun Shin
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Yoonji Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Tai Hyun Park
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 08826, Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| |
Collapse
|
2
|
Jang YH, Ahn SR, Shim JY, Lim KI. Engineering Genetic Systems for Treating Mitochondrial Diseases. Pharmaceutics 2021; 13:810. [PMID: 34071708 PMCID: PMC8227772 DOI: 10.3390/pharmaceutics13060810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/23/2021] [Accepted: 05/24/2021] [Indexed: 12/13/2022] Open
Abstract
Mitochondria are intracellular energy generators involved in various cellular processes. Therefore, mitochondrial dysfunction often leads to multiple serious diseases, including neurodegenerative and cardiovascular diseases. A better understanding of the underlying mitochondrial dysfunctions of the molecular mechanism will provide important hints on how to mitigate the symptoms of mitochondrial diseases and eventually cure them. In this review, we first summarize the key parts of the genetic processes that control the physiology and functions of mitochondria and discuss how alterations of the processes cause mitochondrial diseases. We then list up the relevant core genetic components involved in these processes and explore the mutations of the components that link to the diseases. Lastly, we discuss recent attempts to apply multiple genetic methods to alleviate and further reverse the adverse effects of the core component mutations on the physiology and functions of mitochondria.
Collapse
Affiliation(s)
- Yoon-ha Jang
- Department of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Korea; (Y.-h.J.); (J.-y.S.)
| | - Sae Ryun Ahn
- Industry Collaboration Center, Industry-Academic Cooperation Foundation, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Korea;
| | - Ji-yeon Shim
- Department of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Korea; (Y.-h.J.); (J.-y.S.)
| | - Kwang-il Lim
- Department of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Korea; (Y.-h.J.); (J.-y.S.)
- Industry Collaboration Center, Industry-Academic Cooperation Foundation, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Korea;
| |
Collapse
|
3
|
Ahn SR, An JH, Song HS, Park JW, Lee SH, Kim JH, Jang J, Park TH. Duplex Bioelectronic Tongue for Sensing Umami and Sweet Tastes Based on Human Taste Receptor Nanovesicles. ACS Nano 2016; 10:7287-7296. [PMID: 27327579 DOI: 10.1021/acsnano.6b02547] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
For several decades, significant efforts have been made in developing artificial taste sensors to recognize the five basic tastes. So far, the well-established taste sensor is an E-tongue, which is constructed with polymer and lipid membranes. However, the previous artificial taste sensors have limitations in various food, beverage, and cosmetic industries because of their failure to mimic human taste reception. There are many interactions between tastants. Therefore, detecting the interactions in a multiplexing system is required. Herein, we developed a duplex bioelectronic tongue (DBT) based on graphene field-effect transistors that were functionalized with heterodimeric human umami taste and sweet taste receptor nanovesicles. Two types of nanovesicles, which have human T1R1/T1R3 for the umami taste and human T1R2/T1R3 for the sweet taste on their membranes, immobilized on micropatterned graphene surfaces were used for the simultaneous detection of the umami and sweet tastants. The DBT platform led to highly sensitive and selective recognition of target tastants at low concentrations (ca. 100 nM). Moreover, our DBT was able to detect the enhancing effect of taste enhancers as in a human taste sensory system. This technique can be a useful tool for the detection of tastes instead of sensory evaluation and development of new artificial tastants in the food and beverage industry.
Collapse
Affiliation(s)
- Sae Ryun Ahn
- School of Chemical and Biological Engineering, Bio-MAX Institute, Seoul National University , Seoul 151-744, Republic of Korea
| | - Ji Hyun An
- School of Chemical and Biological Engineering, Seoul National University , Seoul 151-744, Republic of Korea
| | - Hyun Seok Song
- Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI) , Yuseong, Daejeon 169-148, Republic of Korea
| | - Jin Wook Park
- School of Chemical and Biological Engineering, Seoul National University , Seoul 151-744, Republic of Korea
| | - Sang Hun Lee
- Department of Bioengineering, University of California , Berkeley, California 94720, United States
| | - Jae Hyun Kim
- S.LSI Material Technology Group, Device Solutions, Samsung Electronics , 1, Samsung-ro, Giheung-gu, Yongin-si, Gyeonggi-do 446-711, Korea
| | - Jyongsik Jang
- School of Chemical and Biological Engineering, Seoul National University , Seoul 151-744, Republic of Korea
| | - Tai Hyun Park
- School of Chemical and Biological Engineering, Bio-MAX Institute, Seoul National University , Seoul 151-744, Republic of Korea
- Advanced Institutes of Convergence Technology , Suwon, Gyeonggi-do 443-270, Republic of Korea
| |
Collapse
|
4
|
Song HS, Jin HJ, Ahn SR, Kim D, Lee SH, Kim UK, Simons CT, Hong S, Park TH. Bioelectronic tongue using heterodimeric human taste receptor for the discrimination of sweeteners with human-like performance. ACS Nano 2014; 8:9781-9789. [PMID: 25126667 DOI: 10.1021/nn502926x] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The sense of taste helps humans to obtain information and form a picture of the world by recognizing chemicals in their environments. Over the past decade, large advances have been made in understanding the mechanisms of taste detection and mimicking its capability using artificial sensor devices. However, the detection capability of previous artificial taste sensors has been far inferior to that of animal tongues, in terms of its sensitivity and selectivity. Herein, we developed a bioelectronic tongue using heterodimeric human sweet taste receptors for the detection and discrimination of sweeteners with human-like performance, where single-walled carbon nanotube field-effect transistors were functionalized with nanovesicles containing human sweet taste receptors and used to detect the binding of sweeteners to the taste receptors. The receptors are heterodimeric G-protein-coupled receptors (GPCRs) composed of human taste receptor type 1 member 2 (hTAS1R2) and human taste receptor type 1 member 3 (hTAS1R3), which have multiple binding sites and allow a human tongue-like broad selectivity for the detection of sweeteners. This nanovesicle-based bioelectronic tongue can be a powerful tool for the detection of sweeteners as an alternative to labor-intensive and time-consuming cell-based assays and the sensory evaluation panels used in the food and beverage industry. Furthermore, this study also allows the artificial sensor to exam the functional activity of dimeric GPCRs.
Collapse
Affiliation(s)
- Hyun Seok Song
- School of Chemical and Biological Engineering, Bio-MAX Institute, ‡Department of Physics and Astronomy, and Institute of Applied Physics, and §Department of Biophysics and Chemical Biology, Seoul National University , Seoul, 151-747, Republic of Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Park SJ, Song HS, Kwon OS, Chung JH, Lee SH, An JH, Ahn SR, Lee JE, Yoon H, Park TH, Jang J. Human dopamine receptor nanovesicles for gate-potential modulators in high-performance field-effect transistor biosensors. Sci Rep 2014; 4:4342. [PMID: 24614248 PMCID: PMC3949245 DOI: 10.1038/srep04342] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 02/24/2014] [Indexed: 11/24/2022] Open
Abstract
The development of molecular detection that allows rapid responses with high sensitivity and selectivity remains challenging. Herein, we demonstrate the strategy of novel bio-nanotechnology to successfully fabricate high-performance dopamine (DA) biosensor using DA Receptor-containing uniform-particle-shaped Nanovesicles-immobilized Carboxylated poly(3,4-ethylenedioxythiophene) (CPEDOT) NTs (DRNCNs). DA molecules are commonly associated with serious diseases, such as Parkinson's and Alzheimer's diseases. For the first time, nanovesicles containing a human DA receptor D1 (hDRD1) were successfully constructed from HEK-293 cells, stably expressing hDRD1. The nanovesicles containing hDRD1 as gate-potential modulator on the conducting polymer (CP) nanomaterial transistors provided high-performance responses to DA molecule owing to their uniform, monodispersive morphologies and outstanding discrimination ability. Specifically, the DRNCNs were integrated into a liquid-ion gated field-effect transistor (FET) system via immobilization and attachment processes, leading to high sensitivity and excellent selectivity toward DA in liquid state. Unprecedentedly, the minimum detectable level (MDL) from the field-induced DA responses was as low as 10 pM in real- time, which is 10 times more sensitive than that of previously reported CP based-DA biosensors. Moreover, the FET-type DRNCN biosensor had a rapid response time (<1 s) and showed excellent selectivity in human serum.
Collapse
Affiliation(s)
- Seon Joo Park
- 1] World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea [2]
| | - Hyun Seok Song
- 1] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea [2] Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA [3]
| | - Oh Seok Kwon
- 1] World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea [2] Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Ji Hyun Chung
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | - Seung Hwan Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | - Ji Hyun An
- World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea
| | - Sae Ryun Ahn
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | - Ji Eun Lee
- Department of Polymer Engineering, Chonnam National University, Gwangju 500-757, Korea
| | - Hyeonseok Yoon
- Department of Polymer Engineering, Chonnam National University, Gwangju 500-757, Korea
| | - Tai Hyun Park
- 1] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea [2] Advanced Institutes of Convergence Technology, Suwon 443-270, Korea
| | - Jyongsik Jang
- World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea
| |
Collapse
|
6
|
Lee MS, Ahn SR, Park JI, Chung YC. Development of an early psychosis intervention system in Korea: focus on the continuing care system for first-episode psychosis treatment in Seoul. East Asian Arch Psychiatry 2012; 22:105-109. [PMID: 23019283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Providing intensive psychosocial intervention within the 5-year critical period following the first psychotic episode is important for both symptomatic and functional recovery. Recently, community mental health centres in Korea have begun to shift their main roles from care of those with chronic schizophrenia to early detection of and interventions for those with first-episode psychosis. This pioneering approach was initiated by the Seoul Mental Health Center, which established a community network, formed a clinical consortium with hospitals and clinics, and developed guidelines for early psychosis detection and management and for the Social Treatment for Early Psychosis (STEP) programme. The One-STEP programme, provided during hospitalisation, has been especially efficient in obtaining a high acceptance rate for community services. Several key issues are discussed with regard to the successful establishment of the close partnership between community mental health centres and hospitals / clinics.
Collapse
Affiliation(s)
- M S Lee
- Seoul Mental Health Center, Seoul, Korea
| | | | | | | |
Collapse
|
7
|
Kwon OS, Ahn SR, Park SJ, Song HS, Lee SH, Lee JS, Hong JY, Lee JS, You SA, Yoon H, Park TH, Jang J. Ultrasensitive and selective recognition of peptide hormone using close-packed arrays of hPTHR-conjugated polymer nanoparticles. ACS Nano 2012; 6:5549-5558. [PMID: 22650249 DOI: 10.1021/nn301482x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Recognition of diverse hormones in the human body is a highly significant challenge because numerous diseases can be affected by hormonal imbalances. However, the methodologies reported to date for detecting hormones have exhibited limited performance. Therefore, development of innovative methods is still a major concern in hormone-sensing applications. In this study, we report an immobilization-based approach to facilitate formation of close-packed arrays of carboxylated polypyrrole nanoparticles (CPPyNPs) and their integration with human parathyroid hormone receptor (hPTHR), which is a B-class family of G-protein-coupled receptors (GPCRs). Our devices enabled use of an electrically controllable liquid-ion-gated field-effect transistor by using the surrounding phosphate-buffered saline solution (pH 7.4) as electrolyte solution. Field-induced signals from the peptide hormone sensors were observed and provided highly sensitive and selective recognition of target molecules at unprecedentedly low concentrations (ca. 48 fM). This hormone sensor also showed long-term stability and excellent selectivity in fetal bovine serum. Importantly, the hormone receptor attached on the surface of CPPyNPs enabled GPCR functional studies; synergistic effects corresponding to increased hPTH peptide length were monitored. These results demonstrate that close-packed CPPyNP arrays are a promising approach for high-performance biosensing devices.
Collapse
Affiliation(s)
- Oh Seok Kwon
- World Class University Program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Abstract
We assessed the results of arthroscopic transglenoid capsular suture in eight recurrent traumatic unidirectional anterior dislocations. At an average follow up of 11 months, ranging from eight to 18 months, assessment by Rowe's scoring system were excellent or good in all shoulders. There were no redislocations and all patients achieved near full, painless range of motion. There were no complications. We propose a new classification of anterior capsular lesions (Bankart lesion) and we describe the details of the arthroscopic suture technique. We conclude that arthroscopic suture is an effective method with low surgical morbidity and low cost in the treatment of recurrent anterior dislocation of the shoulder.
Collapse
Affiliation(s)
- K J Rhee
- Department of Orthopaedic Surgery, College of Medicine, Chung-Nam National University, Taejon, Korea
| | | | | |
Collapse
|