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Hyun J, Eom J, Im J, Kim YJ, Seo I, Kim SW, Im GB, Kim YH, Lee DH, Park HS, Yun DW, Kim DI, Yoon JK, Um SH, Yang DH, Bhang SH. Fibroblast function recovery through rejuvenation effect of nanovesicles extracted from human adipose-derived stem cells irradiated with red light. J Control Release 2024; 368:453-465. [PMID: 38447812 DOI: 10.1016/j.jconrel.2024.02.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 02/07/2024] [Accepted: 02/29/2024] [Indexed: 03/08/2024]
Abstract
Fibroblasts (hDFs) are widely employed for skin regeneration and the treatment of various skin disorders, yet research were rarely investigated about restoration of diminished therapeutic efficacy due to cell senescence. The application of stem cell and stem cell-derived materials, exosomes, were drawn attention for the restoration functionality of fibroblasts, but still have limitation for unintended side effect or low yield. To advance, stem cell-derived nanovesicle (NV) have developed for effective therapeutic reagents with high yield and low risk. In this study, we have developed a method using red light irradiated human adipose-derived stem cells (hADSCs) derived NV (R-NVs) for enhancing the therapeutic efficacy and rejuvenating hDFs. Through red light irradiation, we were able to significantly increase the content of stemness factors and angiogenic biomolecules in R-NVs. Treatment with these R-NVs was found to enhance the migration ability and leading to rejuvenation of old hDFs to levels similar to those of young hDFs. In subsequent in vivo experiments, the treatment of old hDFs with R-NVs demonstrated a superior skin wound healing effect, surpassing that of young hDFs. In summary, this study successfully induced rejuvenation and leading to increased therapeutic efficacy to R-NVs treated old hDFs previously considered as biowaste.
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Affiliation(s)
- Jiyu Hyun
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jiin Eom
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jisoo Im
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yu-Jin Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Inwoo Seo
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sung-Won Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Gwang-Bum Im
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; Department of Surgery, Harvard Medical School, Boston, MA, 02115 USA
| | - Yeong Hwan Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dong-Hyun Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyun Su Park
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dae Won Yun
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dong-Ik Kim
- Division of Vascular Surgery, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul 06351, South Korea
| | - Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Anseong 4726, Republic of Korea
| | - Soong Ho Um
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dae Hyeok Yang
- Department of Medical Life Sciences, College of Medicine, Institute of Cell and Tissue Engineering, The Catholic University of Korea, Seoul, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Jang HJ, Yoon JK. The Role of Vasculature and Angiogenic Strategies in Bone Regeneration. Biomimetics (Basel) 2024; 9:75. [PMID: 38392121 PMCID: PMC10887147 DOI: 10.3390/biomimetics9020075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
Bone regeneration is a complex process that involves various growth factors, cell types, and extracellular matrix components. A crucial aspect of this process is the formation of a vascular network, which provides essential nutrients and oxygen and promotes osteogenesis by interacting with bone tissue. This review provides a comprehensive discussion of the critical role of vasculature in bone regeneration and the applications of angiogenic strategies, from conventional to cutting-edge methodologies. Recent research has shifted towards innovative bone tissue engineering strategies that integrate vascularized bone complexes, recognizing the significant role of vasculature in bone regeneration. The article begins by examining the role of angiogenesis in bone regeneration. It then introduces various in vitro and in vivo applications that have achieved accelerated bone regeneration through angiogenesis to highlight recent advances in bone tissue engineering. This review also identifies remaining challenges and outlines future directions for research in vascularized bone regeneration.
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Affiliation(s)
- Hye-Jeong Jang
- Department of Systems Biotechnology, Chung-Ang University, Anseong-si 17546, Gyeonggi-do, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Anseong-si 17546, Gyeonggi-do, Republic of Korea
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Jang HJ, Shim KS, Lee J, Park JH, Kang SJ, Shin YM, Lee JB, Baek W, Yoon JK. Engineering of Cell Derived-Nanovesicle as an Alternative to Exosome Therapy. Tissue Eng Regen Med 2024; 21:1-19. [PMID: 38066355 PMCID: PMC10764700 DOI: 10.1007/s13770-023-00610-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 01/04/2024] Open
Abstract
BACKGROUND Exosomes, nano-sized vesicles ranging between 30 and 150 nm secreted by human cells, play a pivotal role in long-range intercellular communication and have attracted significant attention in the field of regenerative medicine. Nevertheless, their limited productivity and cost-effectiveness pose challenges for clinical applications. These issues have recently been addressed by cell-derived nanovesicles (CDNs), which are physically synthesized exosome-mimetic nanovesicles from parent cells, as a promising alternative to exosomes. CDNs exhibit structural, physical, and biological properties similar to exosomes, containing intracellular protein and genetic components encapsulated by the cell plasma membrane. These characteristics allow CDNs to be used as regenerative medicine and therapeutics on their own, or as a drug delivery system. METHODS The paper reviews diverse methods for CDN synthesis, current analysis techniques, and presents engineering strategies to improve lesion targeting efficiency and/or therapeutic efficacy. RESULTS CDNs, with their properties similar to those of exosomes, offer a cost-effective and highly productive alternative due to their non-living biomaterial nature, nano-size, and readiness for use, allowing them to overcome several limitations of conventional cell therapy methods. CONCLUSION Ongoing research and enhancement of CDNs engineering, along with comprehensive safety assessments and stability analysis, exhibit vast potential to advance regenerative medicine by enabling the development of efficient therapeutic interventions.
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Affiliation(s)
- Hye-Jeong Jang
- Department of Systems Biotechnology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea
| | - Kyu-Sik Shim
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Jinah Lee
- Department of Biological Science, Research Institute of Women's Health, Brain Korea 21 Project, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Joo Hyeon Park
- Department of Biological Science, Research Institute of Women's Health, Brain Korea 21 Project, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Seong-Jun Kang
- Department of Systems Biotechnology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea
| | - Young Min Shin
- Department of Biological Science, Research Institute of Women's Health, Brain Korea 21 Project, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Jung Bok Lee
- Department of Biological Science, Research Institute of Women's Health, Brain Korea 21 Project, Sookmyung Women's University, Seoul, 04310, Republic of Korea.
| | - Wooyeol Baek
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
| | - Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
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Goldberg DJ, Hu C, Lubert AM, Rathod RH, Penny DJ, Petit CJ, Schumacher KR, Ginde S, Williams RV, Yoon JK, Kim GB, Nowlen TT, DiMaria MV, Frischhertz BP, Wagner JB, McHugh KE, McCrindle BW, Cartoski MJ, Detterich JA, Yetman AT, John AS, Richmond ME, Yung D, Payne RM, Mackie AS, Davis CK, Shahanavaz S, Hill KD, Almaguer M, Zak V, McBride MG, Goldstein BH, Pearson GD, Paridon SM. The Fontan Udenafil Exercise Longitudinal Trial: Subgroup Analysis. Pediatr Cardiol 2023; 44:1691-1701. [PMID: 37382636 DOI: 10.1007/s00246-023-03204-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/31/2023] [Indexed: 06/30/2023]
Abstract
The Pediatric Heart Network's Fontan Udenafil Exercise Longitudinal (FUEL) Trial (Mezzion Pharma Co. Ltd., NCT02741115) demonstrated improvements in some measures of exercise capacity and in the myocardial performance index following 6 months of treatment with udenafil (87.5 mg twice daily). In this post hoc analysis, we evaluate whether subgroups within the population experienced a differential effect on exercise performance in response to treatment. The effect of udenafil on exercise was evaluated within subgroups defined by baseline characteristics, including peak oxygen consumption (VO2), serum brain-type natriuretic peptide level, weight, race, gender, and ventricular morphology. Differences among subgroups were evaluated using ANCOVA modeling with fixed factors for treatment arm and subgroup and the interaction between treatment arm and subgroup. Within-subgroup analyses demonstrated trends toward quantitative improvements in peak VO2, work rate at the ventilatory anaerobic threshold (VAT), VO2 at VAT, and ventilatory efficiency (VE/VCO2) for those randomized to udenafil compared to placebo in nearly all subgroups. There was no identified differential response to udenafil based on baseline peak VO2, baseline BNP level, weight, race and ethnicity, gender, or ventricular morphology, although participants in the lowest tertile of baseline peak VO2 trended toward larger improvements. The absence of a differential response across subgroups in response to treatment with udenafil suggests that the treatment benefit may not be restricted to specific sub-populations. Further work is warranted to confirm the potential benefit of udenafil and to evaluate the long-term tolerability and safety of treatment and to determine the impact of udenafil on the development of other morbidities related to the Fontan circulation.Trial Registration NCT0274115.
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Affiliation(s)
- David J Goldberg
- Division of Cardiology, The Children's Hospital of Philadelphia, Perelman School of Medicine, 34th Street and Civic Center Blvd, Philadelphia, PA, 19104, USA.
| | | | - Adam M Lubert
- Cincinnati Children's Hospital and Medical Center, Heart Institute, Cincinnati, OH, 45229, USA
| | - Rahul H Rathod
- Department of Cardiology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Daniel J Penny
- Division of Cardiology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Christopher J Petit
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, NY, 10032, USA
| | - Kurt R Schumacher
- Division of Cardiology, C.S. Mott Children's Hospital, Ann Arbor, MI, 48109, USA
| | - Salil Ginde
- Division of Cardiology, Medical College of Wisconsin, Children's Hospital of Wisconsin, Milwaukee, WI, 53226, USA
| | - Richard V Williams
- Division of Pediatric Cardiology, University of Utah, Primary Children's Hospital, Salt Lake City, UT, 84132, USA
| | - J K Yoon
- Department of Pediatrics, Sejong General Hospital, Bucheon, South Korea
| | - Gi Beom Kim
- Seoul National University School of Medicine, Seoul National University Children's Hospital, Seoul, South Korea
| | - Todd T Nowlen
- Heart Center, Phoenix Children's Hospital, Phoenix, AZ, 85016, USA
| | - Michael V DiMaria
- Department of Pediatrics, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Benjamin P Frischhertz
- Division of Cardiology, Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Jonathan B Wagner
- Divisions of Cardiology and Clinical Pharmacology, Children's Mercy Kansas City, Kansas City, MO, 64108, USA
| | - Kimberly E McHugh
- Division of Pediatric Cardiology, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Brian W McCrindle
- Department of Pediatrics, The Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, Toronto, ON, M5G 1X8, Canada
| | - Mark J Cartoski
- Nemours Cardiac Center, Nemours / Alfred I. DuPont Hospital for Children, Wilmington, DE, 19803, USA
| | - Jon A Detterich
- Division of Cardiology, Children's Hospital Los Angeles, USC Keck School of Medicine, Los Angeles, CA, 90027, USA
| | - Anji T Yetman
- Children's Hospital and Medical Center, University of Nebraska, Omaha, NE, 68114, USA
| | - Anitha S John
- Division of Cardiology, Children's National Hospital, Washington, DC, 20010, USA
| | - Marc E Richmond
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, NY, 10032, USA
| | - Delphine Yung
- Division of Pediatric Cardiology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, WA, 98105, USA
| | - R Mark Payne
- Division of Cardiology, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Andrew S Mackie
- Division of Cardiology, Stollery Children's Hospital, Edmonton, AB, T6G 2B7, Canada
| | - Christopher K Davis
- Division of Cardiology, Rady Children's Hospital San Diego, University of California San Diego, San Diego, CA, 92123, USA
| | - Shabana Shahanavaz
- Division of Cardiology, St. Louis Children's Hospital, St. Louis, MO, 63110, USA
| | - Kevin D Hill
- Duke Children's Pediatric and Congenital Heart Center, Durham, NC, 27705, USA
| | - Marisa Almaguer
- Cincinnati Children's Hospital and Medical Center, Heart Institute, Cincinnati, OH, 45229, USA
| | | | - Michael G McBride
- Division of Cardiology, The Children's Hospital of Philadelphia, Perelman School of Medicine, 34th Street and Civic Center Blvd, Philadelphia, PA, 19104, USA
| | - Bryan H Goldstein
- Division of Cardiology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, 15224, USA
| | - Gail D Pearson
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD, 20892, USA
| | - Stephen M Paridon
- Division of Cardiology, The Children's Hospital of Philadelphia, Perelman School of Medicine, 34th Street and Civic Center Blvd, Philadelphia, PA, 19104, USA
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5
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Jang HJ, Tiruneh DM, Ryu H, Yoon JK. Piezoelectric and Triboelectric Nanogenerators for Enhanced Wound Healing. Biomimetics (Basel) 2023; 8:517. [PMID: 37999158 PMCID: PMC10669670 DOI: 10.3390/biomimetics8070517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/22/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023] Open
Abstract
Wound healing is a highly orchestrated biological process characterized by sequential phases involving inflammation, proliferation, and tissue remodeling, and the role of endogenous electrical signals in regulating these phases has been highlighted. Recently, external electrostimulation has been shown to enhance these processes by promoting cell migration, extracellular matrix formation, and growth factor release while suppressing pro-inflammatory signals and reducing the risk of infection. Among the innovative approaches, piezoelectric and triboelectric nanogenerators have emerged as the next generation of flexible and wireless electronics designed for energy harvesting and efficiently converting mechanical energy into electrical power. In this review, we discuss recent advances in the emerging field of nanogenerators for harnessing electrical stimulation to accelerate wound healing. We elucidate the fundamental mechanisms of wound healing and relevant bioelectric physiology, as well as the principles underlying each nanogenerator technology, and review their preclinical applications. In addition, we address the prominent challenges and outline the future prospects for this emerging era of electrical wound-healing devices.
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Affiliation(s)
- Hye-Jeong Jang
- Department of Systems Biotechnology, Chung-Ang University, Anseong-si 17546, Gyeonggi-do, Republic of Korea;
| | - Daniel Manaye Tiruneh
- Department of Intelligence Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea;
| | - Hanjun Ryu
- Department of Intelligence Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea;
- Department of Advanced Materials Engineering, Chung-Ang University, Anseong-si 17546, Gyeonggi-do, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Anseong-si 17546, Gyeonggi-do, Republic of Korea;
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Yoon JK. Advanced 3D Cell Culture Platform for Tissue Engineering. Tissue Eng Regen Med 2023; 20:519-521. [PMID: 37351786 PMCID: PMC10313585 DOI: 10.1007/s13770-023-00562-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023] Open
Affiliation(s)
- Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea.
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Jang HJ, Lee JB, Yoon JK. Advanced In Vitro Three-Dimensional Skin Models of Atopic Dermatitis. Tissue Eng Regen Med 2023; 20:539-552. [PMID: 36995643 PMCID: PMC10313606 DOI: 10.1007/s13770-023-00532-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/11/2023] [Accepted: 02/19/2023] [Indexed: 03/31/2023] Open
Abstract
Atopic dermatitis (AD) is one of the most prevalent inflammatory skin diseases that is characterized by eczematous rashes, intense itching, dry skin, and sensitive skin. Although AD significantly impacts the quality of life and the number of patients keeps increasing, its pathological mechanism is still unknown because of its complexity. The importance of developing new in vitro three-dimensional (3D) models has been underlined in order to understand the mechanisms for the development of therapeutics since the limitations of 2D models or animal models have been repeatedly reported. Thus, the new in vitro AD models should not only be created in 3D structure, but also reflect the pathological characteristics of AD, which are known to be associated with Th2-mediated inflammatory responses, epidermal barrier disruption, increased dermal T-cell infiltration, filaggrin down-regulation, or microbial imbalance. In this review, we introduce various types of in vitro skin models including 3D culture methods, skin-on-a-chips, and skin organoids, as well as their applications to AD modeling for drug screening and mechanistic studies.
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Affiliation(s)
- Hye-Jeong Jang
- Department of Systems Biotechnology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea
| | - Jung Bok Lee
- Department of Biological Sciences, Research Institute of Women's Health, Sookmyung Women's University, Seoul, 04310, Republic of Korea.
| | - Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
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Park JH, Lee JR, Park S, Kim YJ, Yoon JK, Park HS, Hyun J, Joung YK, Lee TI, Bhang SH. Subaqueous 3D stem cell spheroid levitation culture using anti-gravity bioreactor based on sound wave superposition. Biomater Res 2023; 27:51. [PMID: 37208764 DOI: 10.1186/s40824-023-00383-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/19/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND Recently, various studies have revealed that 3D cell spheroids have several advantages over 2D cells in stem cell culture. However, conventional 3D spheroid culture methods have some disadvantages and limitations such as time required for spheroid formation and complexity of the experimental process. Here, we used acoustic levitation as cell culture platform to overcome the limitation of conventional 3D culture methods. METHODS In our anti-gravity bioreactor, continuous standing sonic waves created pressure field for 3D culture of human mesenchymal stem cells (hMSCs). hMSCs were trapped and aggerated in pressure field and consequently formed spheroids. The structure, viability, gene and protein expression of spheroids formed in the anti-gravity bioreactor were analyzed by electron microscope, immunostaining, polymerase chain reaction, and western blot. We injected hMSC spheroids fabricated by anti-gravity bioreactor into the mouse hindlimb ischemia model. Limb salvage was quantified to evaluate therapeutic efficacy of hMSC spheroids. RESULTS The acoustic levitation in anti-gravity bioreactor made spheroids faster and more compact compared to the conventional hanging drop method, which resulted in the upregulation of angiogenic paracrine factors of hMSCs, such as vascular endothelial growth factor and angiopoietin 2. Injected hMSCs spheroids cultured in the anti-gravity bioreactor exhibited improved therapeutic efficacy, including the degree of limb salvage, capillary formation, and attenuation of fibrosis and inflammation, for mouse hindlimb ischemia model compared to spheroids formed by the conventional hanging drop method. CONCLUSION Our stem cell culture system using acoustic levitation will be proposed as a new platform for the future 3D cell culture system.
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Affiliation(s)
- Jung Hwan Park
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Ju-Ro Lee
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Sungkwon Park
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul, 05006, Korea
| | - Yu-Jin Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Systems Biotechnology, Chung-Ang University, Gyeonggi-Do, Anseong-Si, 17540, Republic of Korea
| | - Hyun Su Park
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jiyu Hyun
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Yoon Ki Joung
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science and Technology, University of Science and Technology, Republic of Korea, Seoul, 02792, Republic of Korea
| | - Tae Il Lee
- Department of Materials Science and Engineering, Gachon University, Gyeonggi-Do, Seongnam-Si, 13120, Republic of Korea.
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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Lokugamage MP, Vanover D, Beyersdorf J, Hatit MZC, Rotolo L, Echeverri ES, Peck HE, Ni H, Yoon JK, Kim Y, Santangelo PJ, Dahlman JE. Optimization of lipid nanoparticles for the delivery of nebulized therapeutic mRNA to the lungs. Nat Biomed Eng 2021; 5:1059-1068. [PMID: 34616046 DOI: 10.1038/s41551-021-00786-x] [Citation(s) in RCA: 125] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 07/20/2021] [Indexed: 11/09/2022]
Abstract
Lipid nanoparticles (LNPs) for the efficient delivery of drugs need to be designed for the particular administration route and type of drug. Here we report the design of LNPs for the efficient delivery of therapeutic RNAs to the lung via nebulization. We optimized the composition, molar ratios and structure of LNPs made of lipids, neutral or cationic helper lipids and poly(ethylene glycol) (PEG) by evaluating the performance of LNPs belonging to six clusters occupying extremes in chemical space, and then pooling the lead clusters and expanding their diversity. We found that a low (high) molar ratio of PEG improves the performance of LNPs with neutral (cationic) helper lipids, an identified and optimal LNP for low-dose messenger RNA delivery. Nebulized delivery of an mRNA encoding a broadly neutralizing antibody targeting haemagglutinin via the optimized LNP protected mice from a lethal challenge of the H1N1 subtype of influenza A virus, and delivered mRNA more efficiently than LNPs previously optimized for systemic delivery. A cluster approach to LNP design may facilitate the optimization of LNPs for other administration routes and therapeutics.
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Affiliation(s)
- Melissa P Lokugamage
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Daryll Vanover
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Jared Beyersdorf
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Marine Z C Hatit
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Laura Rotolo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Elisa Schrader Echeverri
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Hannah E Peck
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Huanzhen Ni
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Jeong-Kee Yoon
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - YongTae Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA.,George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, USA
| | - Philip J Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA. .,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.
| | - James E Dahlman
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA. .,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.
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10
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Yoon JK, Kim J, Shah Z, Awasthi A, Mahajan A, Kim Y. Advanced Human BBB-on-a-Chip: A New Platform for Alzheimer's Disease Studies. Adv Healthc Mater 2021; 10:e2002285. [PMID: 34075728 PMCID: PMC8349886 DOI: 10.1002/adhm.202002285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/17/2021] [Indexed: 12/14/2022]
Abstract
The blood-brain barrier (BBB) is a unique vascular structure that serves as a molecular transport gateway for the maintenance of brain homeostasis. Chronic disruption or breakdown of the BBB reportedly leads to neurodegenerative diseases. Nonetheless, research on human BBB pathophysiology and drug development remains highly dependent on studies using inherently different animals. Moreover, more studies have shown that animal models are not appropriate in modeling Alzheimer's disease (AD), underlining the importance of in vitro models of the human BBB with physiological relevance. In this review, recent advances in human BBB-on-a-chip technologies are highlighted and their potential for pathogenesis studies and drug prescreening for AD treatment are discussed.
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Affiliation(s)
- Jeong-Kee Yoon
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Jaehoon Kim
- Mepsgen Co. Ltd., Seoul, 05836, Republic of Korea
| | - Zachary Shah
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Ashi Awasthi
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Advay Mahajan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - YongTae Kim
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Mepsgen Co. Ltd., Seoul, 05836, Republic of Korea
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USA
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11
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Yi SW, Shin YM, Lee JB, Park JY, Kim DH, Baek W, Yoon JK, Kim DG, Shin IS, Kim CS, Kang ML, Yang JW, Sung HJ. Dilation-Responsive Microshape Programing Prevents Vascular Graft Stenosis. Small 2021; 17:e2007297. [PMID: 33729684 DOI: 10.1002/smll.202007297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/02/2021] [Indexed: 06/12/2023]
Abstract
Shape memory materials have been successfully applied to minimally invasive implantation of medical devices. However, organ-movement-specific shape programing at a microscale level has never been demonstrated despite significant unmet needs. As vein-to-artery grafting induces vein dilation and stenosis, a polymeric self-enclosable external support (SES) is designed to wrap the vascular out-wall. Its micropores are programmed to increase sizes and interconnections upon dilation. Vessel dilation promotes venous maturation, but overdilation induces stenosis by disturbed blood flow. Therefore, the unique elastic shape-fixity of SES provides a foundation to enable a stable microscale shape transition by maintaining the vein dilation. The shape transition of micropore architecture upon dilation induces beneficial inflammation, thereby regenerating vasa vasorum and directing smooth muscle cell migration toward adventitia with the consequent muscle reinforcement of veins. This game-changer approach prevents the stenosis of vein-to-artery grafting by rescuing ischemic disorders and promoting arterial properties of veins.
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Affiliation(s)
- Se Won Yi
- TMD LAB Co., Ltd., 6th floor, 31, Gwangnaru-ro 8-gil, Seongdong-gu, Seoul, 04799, Republic of Korea
| | - Young Min Shin
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jung Bok Lee
- Department of Biological Science, Sookmyung Women's University, Cheongpa-ro 47-gil 100, Yongsan-gu, Seoul, 04310, Republic of Korea
| | - Ju Young Park
- TMD LAB Co., Ltd., 6th floor, 31, Gwangnaru-ro 8-gil, Seongdong-gu, Seoul, 04799, Republic of Korea
| | - Dae-Hyun Kim
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Wooyeol Baek
- Department of Plastic and Reconstructive Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Deok Gie Kim
- Department of Surgery, Yonsei University Wonju College of Medicine, Wonju, 220-701, Republic of Korea
| | - In Sik Shin
- Department of Surgery, Yonsei University Wonju College of Medicine, Wonju, 220-701, Republic of Korea
| | - Chang-Soo Kim
- Numais Co., Ltd., 5th floor, 31, Gwangnaru-ro 8-gil, Seongdong-gu, Seoul, 04799, Republic of Korea
| | - Mi-Lan Kang
- TMD LAB Co., Ltd., 6th floor, 31, Gwangnaru-ro 8-gil, Seongdong-gu, Seoul, 04799, Republic of Korea
| | - Jae Won Yang
- Division of Nephrology, Department of Nephrology, Yonsei University Wonju College of Medicine, Wonju, 220-701, Republic of Korea
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
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12
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Lim J, Ching H, Yoon JK, Jeon NL, Kim Y. Microvascularized tumor organoids-on-chips: advancing preclinical drug screening with pathophysiological relevance. Nano Converg 2021; 8:12. [PMID: 33846849 PMCID: PMC8042002 DOI: 10.1186/s40580-021-00261-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/17/2021] [Indexed: 05/06/2023]
Abstract
Recent developments of organoids engineering and organ-on-a-chip microfluidic technologies have enabled the recapitulation of the major functions and architectures of microscale human tissue, including tumor pathophysiology. Nevertheless, there remain challenges in recapitulating the complexity and heterogeneity of tumor microenvironment. The integration of these engineering technologies suggests a potential strategy to overcome the limitations in reconstituting the perfusable microvascular system of large-scale tumors conserving their key functional features. Here, we review the recent progress of in vitro tumor-on-a-chip microfluidic technologies, focusing on the reconstruction of microvascularized organoid models to suggest a better platform for personalized cancer medicine.
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Affiliation(s)
- Jungeun Lim
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- George W, Woodruff School of Mechanical Engineering, Georgia Institute of Technology, North Ave NW, Atlanta, GA, 30332, USA
| | - Hanna Ching
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jeong-Kee Yoon
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Noo Li Jeon
- George W, Woodruff School of Mechanical Engineering, Georgia Institute of Technology, North Ave NW, Atlanta, GA, 30332, USA
- Institute of Advanced Machinery and Design, Seoul National University, Seoul, 08826, Republic of Korea
- Institute of Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - YongTae Kim
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
- Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
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13
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Lee JR, Park BW, Kim J, Choo YW, Kim HY, Yoon JK, Kim H, Hwang JW, Kang M, Kwon SP, Song SY, Ko IO, Park JA, Ban K, Hyeon T, Park HJ, Kim BS. Nanovesicles derived from iron oxide nanoparticles-incorporated mesenchymal stem cells for cardiac repair. Sci Adv 2020; 6:eaaz0952. [PMID: 32494669 PMCID: PMC7195131 DOI: 10.1126/sciadv.aaz0952] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 02/12/2020] [Indexed: 05/18/2023]
Abstract
Because of poor engraftment and safety concerns regarding mesenchymal stem cell (MSC) therapy, MSC-derived exosomes have emerged as an alternative cell-free therapy for myocardial infarction (MI). However, the diffusion of exosomes out of the infarcted heart following injection and the low productivity limit the potential of clinical applications. Here, we developed exosome-mimetic extracellular nanovesicles (NVs) derived from iron oxide nanoparticles (IONPs)-incorporated MSCs (IONP-MSCs). The retention of injected IONP-MSC-derived NVs (IONP-NVs) within the infarcted heart was markedly augmented by magnetic guidance. Furthermore, IONPs significantly increased the levels of therapeutic molecules in IONP-MSCs and IONP-NVs, which can reduce the concern of low exosome productivity. The injection of IONP-NVs into the infarcted heart and magnetic guidance induced an early shift from the inflammation phase to the reparative phase, reduced apoptosis and fibrosis, and enhanced angiogenesis and cardiac function recovery. This approach can enhance the therapeutic potency of an MSC-derived NV therapy.
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Affiliation(s)
- Ju-Ro Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Bong-Woo Park
- Department of Medical Life Science, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jonghoon Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Yeon Woong Choo
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Han Young Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyeok Kim
- Department of Medical Life Science, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Cardiology, Department of Internal Medicine, Seoul St. Mary’s Hospital, Seoul 06591, Republic of Korea
| | - Ji-Won Hwang
- Department of Medical Life Science, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Cardiology, Department of Internal Medicine, Seoul St. Mary’s Hospital, Seoul 06591, Republic of Korea
| | - Mikyung Kang
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Pil Kwon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seuk Young Song
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - In Ok Ko
- Division of Applied RI, Korea Institute Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Ji-Ae Park
- Division of Applied RI, Korea Institute Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Kiwon Ban
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Taeghwan Hyeon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- Institute of Chemical Processes, Institute of Engineering Research, BIOMAX, Seoul National University, Seoul 08826, Republic of Korea
| | - Hun-Jun Park
- Department of Medical Life Science, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Cardiology, Department of Internal Medicine, Seoul St. Mary’s Hospital, Seoul 06591, Republic of Korea
- Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Corresponding author. (B.-S.K.); (H.-J.P.)
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Chemical Processes, Institute of Engineering Research, BIOMAX, Seoul National University, Seoul 08826, Republic of Korea
- Corresponding author. (B.-S.K.); (H.-J.P.)
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14
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Yoon JK, Kim DH, Kang ML, Jang HK, Park HJ, Lee JB, Yi SW, Kim HS, Baek S, Park DB, You J, Lee SD, Sei Y, Ahn SI, Shin YM, Kim CS, Bae S, Kim Y, Sung HJ. Anti-Atherogenic Effect of Stem Cell Nanovesicles Targeting Disturbed Flow Sites. Small 2020; 16:e2000012. [PMID: 32239653 DOI: 10.1002/smll.202000012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 06/11/2023]
Abstract
Atherosclerosis development leads to irreversible cascades, highlighting the unmet need for improved methods of early diagnosis and prevention. Disturbed flow formation is one of the earliest atherogenic events, resulting in increased endothelial permeability and subsequent monocyte recruitment. Here, a mesenchymal stem cell (MSC)-derived nanovesicle (NV) that can target disturbed flow sites with the peptide GSPREYTSYMPH (PREY) (PMSC-NVs) is presented which is selected through phage display screening of a hundred million peptides. The PMSC-NVs are effectively produced from human MSCs (hMSCs) using plasmid DNA designed to functionalize the cell membrane with PREY. The potent anti-inflammatory and pro-endothelial recovery effects are confirmed, similar to those of hMSCs, employing mouse and porcine partial carotid artery ligation models as well as a microfluidic disturbed flow model with human carotid artery-derived endothelial cells. This nanoscale platform is expected to contribute to the development of new theragnostic strategies for preventing the progression of atherosclerosis.
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Affiliation(s)
- Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Dae-Hyun Kim
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Mi-Lan Kang
- TMD LAB Co., Ltd, Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Hyeon-Ki Jang
- Department of Chemistry, Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hyun-Ji Park
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30313, USA
| | - Jung Bok Lee
- Department of Biological Science, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Se Won Yi
- TMD LAB Co., Ltd, Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Hye-Seon Kim
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Sewoom Baek
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Dan Bi Park
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Jin You
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | | | - Yoshitaka Sei
- George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, 30313, USA
| | - Song Ih Ahn
- George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, 30313, USA
| | - Young Min Shin
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | | | - Sangsu Bae
- Department of Chemistry, Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - YongTae Kim
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience (IBB), Institute for Electronics and Nanotechnology (IEN), Georgia Institute of Technology, Atlanta, Georgia, 30313, USA
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
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15
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Kang ML, Kim HS, You J, Choi YS, Kwon BJ, Park CH, Baek W, Kim MS, Lee YJ, Im GI, Yoon JK, Lee JB, Sung HJ. Hydrogel cross-linking-programmed release of nitric oxide regulates source-dependent angiogenic behaviors of human mesenchymal stem cell. Sci Adv 2020; 6:eaay5413. [PMID: 32133403 PMCID: PMC7043909 DOI: 10.1126/sciadv.aay5413] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 12/04/2019] [Indexed: 05/12/2023]
Abstract
Angiogenesis is stimulated by nitric oxide (NO) production in endothelial cells (ECs). Although proangiogenic actions of human mesenchymal stem cells (hMSCs) have been extensively studied, the mechanistic role of NO in this action remains obscure. Here, we used a gelatin hydrogel that releases NO upon crosslinking by a transglutaminase reaction ("NO gel"). Then, the source-specific behaviors of bone marrow versus adipose tissue-derived hMSCs (BMSCs versus ADSCs) were monitored in the NO gels. NO inhibition resulted in significant decreases in their angiogenic activities. The NO gel induced pericyte-like characteristics in BMSCs in contrast to EC differentiation in ADSCs, as evidenced by tube stabilization versus tube formation, 3D colocalization versus 2D coformation with EC tube networks, pericyte-like wound healing versus EC-like vasculogenesis in gel plugs, and pericyte versus EC marker production. These results provide previously unidentified insights into the effects of NO in regulating hMSC source-specific angiogenic mechanisms and their therapeutic applications.
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Affiliation(s)
- Mi-Lan Kang
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- TMD LAB Co., Ltd., Seoul 03722, Republic of Korea
| | - Hye-Seon Kim
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jin You
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Byeong-Ju Kwon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Chan Hee Park
- Metareceptome Research Center, College of Pharmacy, Chung-Ang University, Seoul 06911, Republic of Korea
| | - Wooyeol Baek
- Institute for Human Tissue Restoration, Department of Plastic & Reconstructive Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Min Sup Kim
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Yong Jae Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Gun-Il Im
- Department of Orthopedics, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jung Bok Lee
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- Corresponding author.
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16
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Lee JB, Kim DH, Yoon JK, Park DB, Kim HS, Shin YM, Baek W, Kang ML, Kim HJ, Sung HJ. Microchannel network hydrogel induced ischemic blood perfusion connection. Nat Commun 2020; 11:615. [PMID: 32001693 PMCID: PMC6992688 DOI: 10.1038/s41467-020-14480-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 01/12/2020] [Indexed: 12/13/2022] Open
Abstract
Angiogenesis induction into damaged sites has long been an unresolved issue. Local treatment with pro-angiogenic molecules has been the most common approach. However, this approach has critical side effects including inflammatory coupling, tumorous vascular activation, and off-target circulation. Here, the concept that a structure can guide desirable biological function is applied to physically engineer three-dimensional channel networks in implant sites, without any therapeutic treatment. Microchannel networks are generated in a gelatin hydrogel to overcome the diffusion limit of nutrients and oxygen three-dimensionally. Hydrogel implantation in mouse and porcine models of hindlimb ischemia rescues severely damaged tissues by the ingrowth of neighboring host vessels with microchannel perfusion. This effect is guided by microchannel size-specific regenerative macrophage polarization with the consequent functional recovery of endothelial cells. Multiple-site implantation reveals hypoxia and neighboring vessels as major causative factors of the beneficial function. This technique may contribute to the development of therapeutics for hypoxia/inflammatory-related diseases.
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Affiliation(s)
- Jung Bok Lee
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Dae-Hyun Kim
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Dan Bi Park
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hye-Seon Kim
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Young Min Shin
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Wooyeol Baek
- Department of Plastic & Reconstructive Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Mi-Lan Kang
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- TMD LAB Co. Ltd., 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hyun Jung Kim
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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17
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Park JY, Lee JB, Shin WB, Kang ML, Shin YC, Son DH, Yi SW, Yoon JK, Kim JY, Ko J, Kim CS, Yoon JS, Sung HJ. Nasolacrimal stent with shape memory as an advanced alternative to silicone products. Acta Biomater 2020; 101:273-284. [PMID: 31707084 DOI: 10.1016/j.actbio.2019.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/29/2019] [Accepted: 11/01/2019] [Indexed: 01/27/2023]
Abstract
Epiphora is the overflow of tears typically caused by obstruction or occlusion of the nasolacrimal duct. More attention is required to address this global health issue owing to the increase in air pollution. Implantation of a silicone stent is the preferred treatment for epiphora; however, introducing a silicone stent into a narrow duct with complex geometry is challenging as it requires guidance by a sharp metal needle. Additionally, silicone can cause adverse reactions such as biofilm formation and tear flow resistance due to its extreme hydrophobicity. To overcome these problems, in this study we developed a new type of biocompatible shape memory polymer (SMP) stent with elasticity capacity for self-expansion. First, SMPs in the form of x%poly(ε-caprolactone)-co-y%poly(glycidyl methacrylate) (x%PCL-y%PGMA) were synthesized via ring opening polymerization by varying the molar ratio of PCL (x%) and PGMA (y%). Second, the shape memory and mechanical properties were tuned by controlling the crosslinking degree and concentration of x%PCL-y%PGMA solution to produce a test type of SMP stent. Lastly, this 94%PCL-06%PGMA stent exhibited more standout critical functions in a series of in vitro and in vivo experiments such as a cell growth-supporting level of biocompatibility with nasal epithelial cells without significant inflammatory responses, better resistance to biofilm formation, and more efficient capacity to drain tear than the silicone control. Overall, 94%PCL-06%PGMA can be suggested as a superior alternative to the currently used materials for nasolacrimal stents. STATEMENT OF SIGNIFICANCE: Silicone intubation (stenting) has been widely used to treat nasolacrimal duct obstruction, however, it can cause adverse clinical effects such as bacterial infection; presents procedural challenges because of the curved nasolacrimal duct structure; and shows poor drainage efficiency stemming from the highly hydrophobic nature of silicone. In this work, we describe an innovative shape memory polymer (SMP) as a superior alternative to conventional silicone-based materials for nasolacrimal duct intubation. We demonstrate the clear advantages of the SMP over conventional silicone, including a much higher drainage capacity and superior resistance to bacterial infection.
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Affiliation(s)
- Ju Young Park
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jung Bok Lee
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Woo Beom Shin
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea
| | - Mi-Lan Kang
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; TMD Lab Co., Ltd., 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea
| | - Yong Cheol Shin
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Deok Hyeon Son
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Se Won Yi
- TMD Lab Co., Ltd., 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Ji Young Kim
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea
| | - JaeSang Ko
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea
| | - Chang-Soo Kim
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Numais Co., Ltd., 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea
| | - Jin Sook Yoon
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722 Republic of Korea.
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
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18
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Shin YC, Lee JB, Kim DH, Kim T, Alexander G, Shin YM, Park JY, Baek S, Yoon JK, Lee YJ, Seon GM, Lee MH, Kang ML, Jang WS, Park JC, Jun HW, Kim Y, Sung HJ. Development of a Shape-Memory Tube to Prevent Vascular Stenosis. Adv Mater 2019; 31:e1904476. [PMID: 31454108 DOI: 10.1002/adma.201904476] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Inserting a graft into vessels with different diameters frequently causes severe damage to the host vessels. Poor flow patency is an unresolved issue in grafts, particularly those with diameters less than 6 mm, because of vessel occlusion caused by disturbed blood flow following fast clotting. Herein, successful patency in the deployment of an ≈2 mm diameter graft into a porcine vessel is reported. A new library of property-tunable shape-memory polymers that prevent vessel damage by expanding the graft diameter circumferentially upon implantation is presented. The polymers undergo seven consecutive cycles of strain energy-preserved shape programming. Moreover, the new graft tube, which features a diffuser shape, minimizes disturbed flow formation and prevents thrombosis because its surface is coated with nitric-oxide-releasing peptides. Improved patency in a porcine vessel for 18 d is demonstrated while occlusive vascular remodeling occurs. These insights will help advance vascular graft design.
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Affiliation(s)
- Yong Cheol Shin
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Jung Bok Lee
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Dae-Hyun Kim
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Taeyoung Kim
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering, Institute for Electronics and Nanotechnology, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | | | - Young Min Shin
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | | | - Sewoom Baek
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Yong Jae Lee
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Gyeung Mi Seon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Mi Hee Lee
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Mi-Lan Kang
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- TMD Lab., Seoul, 03722, Republic of Korea
| | | | - Jong-Chul Park
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Ho-Wook Jun
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - YongTae Kim
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering, Institute for Electronics and Nanotechnology, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
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19
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Choi YS, Park JH, Yoon JK, Yoon JS, Kim JS, Lee JH, Yun BH, Park JH, Seo SK, Cho S, Lee BS, Taylor HS. Potential roles of aquaporin 9 in the pathogenesis of endometriosis. ACTA ACUST UNITED AC 2019; 25:373-384. [DOI: 10.1093/molehr/gaz025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 03/09/2019] [Indexed: 12/14/2022]
Abstract
AbstractAquaporins (AQPs) are involved in cell migration, proliferation and carcinogenesis in tumor development and physiologic inflammatory processes, but their associations with endometriosis have not been fully evaluated. In this study, tissue samples were obtained from women undergoing laparoscopic surgery for endometriosis and other benign conditions. Analysis of expressions of AQP subtypes in eutopic and ectopic endometrium of patients with endometriosis (Eu-EMS and Ect-EMS, respectively) and eutopic endometrium of control patients without endometriosis (Eu-CTL) were performed using the NanoString nCounter System and western blotting. Human endometrial stromal cells (HESCs) were cultured and transfected with the siRNA of the AQP of interest. Among the AQP1–9 subtypes, endometrial expression of AQP2 and AQP8 was significantly increased, whereas AQP9 expression was significantly decreased in the Eu-EMS group compared to the Eu-CTL group. Comparison of expression of AQP2, AQP8 and AQP9 among Eu-EMS, Ect-EMS and Eu-CTL groups revealed significant differences for only AQP9. Expression of AQP9 in the Eu-EMS group was decreased compared with that in Eu-CTL. After transfection of AQP9 siRNA in HESCs, expressions of MMP2 and MMP9 were significantly elevated. Increased expression of phosphorylated ERK 1/2 and phosphorylated p38 MAPK proteins after transfection was also confirmed using western blot analysis. Increased migration and invasion potentials of HESCs after transfection were determined by migration and wound healing assays. These findings suggest that AQP9 may be involved in the pathogenesis of endometriosis and warrant further investigation as a potential therapeutic target for treating endometriosis.
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Affiliation(s)
- Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Hyun Park
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Sun Yoon
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Sook Kim
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hoon Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Bo Hyun Yun
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Joo Hyun Park
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Kyo Seo
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - SiHyun Cho
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Byung Seok Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Hugh S Taylor
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
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20
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Park JH, Yoon JK, Lee JB, Shin YM, Lee KW, Bae SW, Lee J, Yu J, Jung CR, Youn YN, Kim HY, Kim DH. Experimental Tracheal Replacement Using 3-dimensional Bioprinted Artificial Trachea with Autologous Epithelial Cells and Chondrocytes. Sci Rep 2019; 9:2103. [PMID: 30765760 PMCID: PMC6375946 DOI: 10.1038/s41598-019-38565-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [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: 11/03/2017] [Accepted: 12/17/2018] [Indexed: 12/19/2022] Open
Abstract
Various treatment methods for tracheal defects have been attempted, such as artificial implants, allografts, autogenous grafts, and tissue engineering; however, no perfect method has been established. We attempted to create an effective artificial trachea via a tissue engineering method using 3D bio-printing. A multi-layered scaffold was fabricated using a 3D printer. Polycaprolactone (PCL) and hydrogel were used with nasal epithelial and auricular cartilage cells in the printing process. An artificial trachea was transplanted into 15 rabbits and a PCL scaffold without the addition of cells was transplanted into 6 rabbits (controls). All animals were followed up with radiography, CT, and endoscopy at 3, 6, and 12 months. In the control group, 3 out of 6 rabbits died from respiratory symptoms. Surviving rabbits in control group had narrowed tracheas due to the formation of granulation tissue and absence of epithelium regeneration. In the experimental group, 13 of 15 animals survived, and the histologic examination confirmed the regeneration of epithelial cells. Neonatal cartilage was also confirmed at 6 and 12 months. Our artificial trachea was effective in the regeneration of respiratory epithelium, but not in cartilage regeneration. Additional studies are needed to promote cartilage regeneration and improve implant stability.
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Affiliation(s)
- Jae-Hyun Park
- Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.,Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeong-Kee Yoon
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - Jung Bok Lee
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - Young Min Shin
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - Kang-Woog Lee
- Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - Sang-Woo Bae
- Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.,Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - JunHee Lee
- Department of Nature-Inspired Nanoconvergence System, Korea Institute of Machinery and Materials, 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon, 34103, Republic of Korea
| | - JunJie Yu
- Department of Nature-Inspired Nanoconvergence System, Korea Institute of Machinery and Materials, 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon, 34103, Republic of Korea.,Department of Biomedical Engineering, School of Integrative Engineering, Chung-Ang University, 84 Heukseok-Ro, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Cho-Rok Jung
- Gene Therapy Research Unit, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Young-Nam Youn
- Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea
| | - Hwi-Yool Kim
- Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Dae-Hyun Kim
- Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Sedaemun-gu, Seoul, 03722, Republic of Korea.
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21
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Kim DH, Lee JB, Kang ML, Park JH, You J, Yu S, Park JY, Ryu SB, Seon GM, Yoon JK, Lee MH, Shin YM, Park KD, Park JC, Jang WS, Kim WS, Sung HJ. Microneedle Vascular Couplers with Heparin-Immobilized Surface Improve Suture-Free Anastomosis Performance. ACS Biomater Sci Eng 2018; 4:3848-3853. [DOI: 10.1021/acsbiomaterials.8b01097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Dae-Hyun Kim
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jung Bok Lee
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Mi-Lan Kang
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | | | - Jin You
- FutureBioWorks, Seoul 08504, Republic of Korea
| | - SeongMi Yu
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Ju Young Park
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
- FutureBioWorks, Seoul 08504, Republic of Korea
| | - Seung Bae Ryu
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Gyeung Mi Seon
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Mi Hee Lee
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Young Min Shin
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Ki Dong Park
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Jong-Chul Park
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | | | - Won Shik Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
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22
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Jang HK, Oh JY, Jeong GJ, Lee TJ, Im GB, Lee JR, Yoon JK, Kim DI, Kim BS, Bhang SH, Lee TI. A Disposable Photovoltaic Patch Controlling Cellular Microenvironment for Wound Healing. Int J Mol Sci 2018; 19:E3025. [PMID: 30287745 PMCID: PMC6213857 DOI: 10.3390/ijms19103025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 01/10/2023] Open
Abstract
Electrical stimulation (ES) is known to affect the wound healing process by modulating skin cell behaviors. However, the conventional clinical devices that can generate ES for promoting wound healing require patient hospitalization due to large-scale of the extracorporeal devices. Herein, we introduce a disposable photovoltaic patch that can be applied to skin wound sites to control cellular microenvironment for promoting wound healing by generating ES. In vitro experiment results show that exogenous ES could enhance cell migration, proliferation, expression of extracellular matrix proteins, and myoblast differentiation of fibroblasts which are critical for wound healing. Our disposable photovoltaic patches were attached to the back of skin wound induced mice. Our patch successfully provided ES, generated by photovoltaic energy harvested from the organic solar cell under visible light illumination. In vivo experiment results show that the patch promoted cutaneous wound healing via enhanced host-inductive cell proliferation, cytokine secretion, and protein synthesis which is critical for wound healing process. Unlike the current treatments for wound healing that engage passive healing processes and often are unsuccessful, our wearable photovoltaic patch can stimulate regenerative activities of endogenous cells and actively contribute to the wound healing processes.
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Affiliation(s)
- Hyeon-Ki Jang
- Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Korea.
| | - Jin Young Oh
- Department of Chemical Engineering, Kyung Hee University, Yongin 17104, Korea.
| | - Gun-Jae Jeong
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
| | - Tae-Jin Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Gwang-Bum Im
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Ju-Ro Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
| | - Dong-Ik Kim
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Korea.
- Bio-MAX Institute, Institute of Chemical Processes, Seoul National University, Seoul 08826, Korea.
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Tae Il Lee
- Department of BioNano Technology, Gachon University, Seongnam 13120, Korea.
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23
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Kim HY, Kumar H, Jo MJ, Kim J, Yoon JK, Lee JR, Kang M, Choo YW, Song SY, Kwon SP, Hyeon T, Han IB, Kim BS. Therapeutic Efficacy-Potentiated and Diseased Organ-Targeting Nanovesicles Derived from Mesenchymal Stem Cells for Spinal Cord Injury Treatment. Nano Lett 2018; 18:4965-4975. [PMID: 29995418 DOI: 10.1021/acs.nanolett.8b01816] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [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: 06/08/2023]
Abstract
Human mesenchymal stem cell (hMSC)-derived exosomes have been spotlighted as a promising therapeutic agent for cell-free regenerative medicine. However, poor organ-targeting ability and insufficient therapeutic efficacy of systemically injected hMSC-exosomes were identified as critical limitations for their further applications. Therefore, in this study we fabricated iron oxide nanoparticle (IONP)-incorporated exosome-mimetic nanovesicles (NV-IONP) from IONP-treated hMSCs and evaluated their therapeutic efficacy in a clinically relevant model for spinal cord injury. Compared to exosome-mimetic nanovesicles (NV) prepared from untreated hMSCs, NV-IONP not only contained IONPs which act as a magnet-guided navigation tool but also carried greater amounts of therapeutic growth factors that can be delivered to the target cells. The increased amounts of therapeutic growth factors inside NV-IONP were attributed to IONPs that are slowly ionized to iron ions which activate the JNK and c-Jun signaling cascades in hMSCs. In vivo systemic injection of NV-IONP with magnetic guidance significantly increased the amount of NV-IONP accumulating in the injured spinal cord. Accumulated NV-IONP enhanced blood vessel formation, attenuated inflammation and apoptosis in the injured spinal cord, and consequently improved spinal cord function. Taken together, these findings highlight the development of therapeutic efficacy-potentiated extracellular nanovesicles and demonstrate their feasibility for repairing injured spinal cord.
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Affiliation(s)
- Han Young Kim
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Hemant Kumar
- Department of Neurosurgery , CHA University , CHA Bundang Medical Center, Seongnam-si , 13488 , Republic of Korea
| | - Min-Jae Jo
- Department of Neurosurgery , CHA University , CHA Bundang Medical Center, Seongnam-si , 13488 , Republic of Korea
| | - Jonghoon Kim
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
- Center for Nanoparticle Research , Institute for Basic Science (IBS) , Seoul 151-744 , Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Ju-Ro Lee
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Mikyung Kang
- Interdisciplinary Program of Bioengineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Yeon Woong Choo
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Seuk Young Song
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Sung Pil Kwon
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Taeghwan Hyeon
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
- Center for Nanoparticle Research , Institute for Basic Science (IBS) , Seoul 151-744 , Republic of Korea
| | - In-Bo Han
- Department of Neurosurgery , CHA University , CHA Bundang Medical Center, Seongnam-si , 13488 , Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering , Seoul National University , Seoul , 08826 , Republic of Korea
- Interdisciplinary Program of Bioengineering , Seoul National University , Seoul , 08826 , Republic of Korea
- Institute of Chemical Processes , Seoul National University , Seoul , 08826 , Republic of Korea
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24
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Kang JM, Yoon JK, Oh SJ, Kim BS, Kim SH. Synergistic Therapeutic Effect of Three-Dimensional Stem Cell Clusters and Angiopoietin-1 on Promoting Vascular Regeneration in Ischemic Region. Tissue Eng Part A 2018; 24:616-630. [DOI: 10.1089/ten.tea.2017.0260] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Jung-Mi Kang
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea
| | - Seong-ja Oh
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea
- Bio-MAX Institute, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Sang-Heon Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
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25
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Choi YS, Park JH, Lee JH, Yoon JK, Yun BH, Park JH, Seo SK, Sung HJ, Kim HS, Cho S, Lee BS. Association Between Impairment of DNA Double Strand Break Repair and Decreased Ovarian Reserve in Patients With Endometriosis. Front Endocrinol (Lausanne) 2018; 9:772. [PMID: 30622513 PMCID: PMC6308303 DOI: 10.3389/fendo.2018.00772] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/10/2018] [Indexed: 12/12/2022] Open
Abstract
Background: Repair of DNA double strand break (DSB) is an important mechanism for maintaining genetic stability during a DNA damage event. Although, a growing body of recent evidence suggests that DNA DSBs and related repair mechanisms may be important in ovarian aging and in various cancers, there are few reports in endometriosis. We, therefore, examined expression levels of genes pertaining to DNA DSB repair in patients with endometriosis to assess the potential effects on ovarian reserves. Materials and methods: A total of 69 women undergoing laparoscopic surgery for endometriosis and other benign conditions was included; endometriosis group (n = 38) vs. controls (n = 31). DNA DSBs in endometrial and ovarian tissues of both groups were compared via immunohistochemistry, aimed at γ-H2AX expression. To gauge genotoxin-induced DNA DSBs in endometrial stromal cells, γ-H2AX expression was determined by western blot after H2O2 treatment of cultured endometrial stromal cells (endometriosis group and controls) and Ishikawa cell-line cultures. Endometrial and ovarian tissue levels of BRCA1, BRCA2, Rad51, and ATM (ataxia-telangiectasia mutated) mRNA expression were also compared. Correlations between expression levels of genes of interest and serum anti-müllerian hormone (AMH) levels were assessed as well. Results: Expression of γ-H2AX in immunostained endometrial and ovarian tissue preparations was greater in the endometriosis group, compared with controls. After H2O2 treatment, γ-H2AX expression levels were also significantly greater in cultured stromal cells of the endometriosis group and in the Ishikawa cell line than in controls. Endometrial expression of BRCA1 and Rad51 mRNA proved significantly lower in the endometriosis group (vs. controls), as did ovarian expression of BRCA1 and BRCA2 mRNA. Serum AMH concentration showed a significant correlation with ovarian BRCA1 mRNA expression in women with endometriosis (p = 0.03). Conclusions: In women with endometriosis, expression levels of various genes implicated in DSB repair are decreased and ovarian BRCA1 expression correlates with.
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Affiliation(s)
- Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji Hyun Park
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Jae Hoon Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, South Korea
| | - Bo Hyon Yun
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Joo Hyun Park
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Seok Kyo Seo
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Hak-Joon Sung
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun-Soo Kim
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- *Correspondence: Hyun-Soo Kim
| | - SiHyun Cho
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- SiHyun Cho
| | - Byung Seok Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
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Jeong GJ, Oh JY, Kim YJ, Bhang SH, Jang HK, Han J, Yoon JK, Kwon SM, Lee TI, Kim BS. Therapeutic Angiogenesis via Solar Cell-Facilitated Electrical Stimulation. ACS Appl Mater Interfaces 2017; 9:38344-38355. [PMID: 29043772 DOI: 10.1021/acsami.7b13322] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cell therapy has been suggested as a treatment modality for ischemic diseases, but the poor survival and engraftment of implanted cells limit its therapeutic efficacy. To overcome such limitation, we used electrical stimulation (ES) derived from a wearable solar cell for inducing angiogenesis in ischemic tissue. ES enhanced the secretion of angiogenic growth factors and the migration of mesenchymal stem cells (MSCs), myoblasts, endothelial progenitor cells, and endothelial cells in vitro. In a mouse ischemic hindlimb model, ES generated by a solar cell and applied to the ischemic region promoted migration of MSCs toward the ischemic site and upregulated expression of angiogenic paracrine factors (vascular endothelial, basic fibroblast, and hepatocyte growth factors; and stromal cell-derived factor-1α). Importantly, solar cell-generated ES promoted the formation of capillaries and arterioles at the ischemic region, attenuated muscle necrosis and fibrosis, and eventually prevented loss of the ischemic limb. Solar cell ES therapy showed higher angiogenic efficacy than conventional MSC therapy. This study shows the feasibility of using solar cell ES as a novel treatment for therapeutic angiogenesis.
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Affiliation(s)
| | - Jin Young Oh
- Department of Materials Science and Engineering, Yonsei University , Seoul 03722, Republic of Korea
| | - Yeon-Ju Kim
- Department of Physiology, School of Medicine, Pusan National University , Yangsan, 50612 Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University , Suwon 16419, Republic of Korea
| | | | | | | | - Sang-Mo Kwon
- Department of Physiology, School of Medicine, Pusan National University , Yangsan, 50612 Republic of Korea
| | - Tae Il Lee
- Department of BioNano Technology, Gachon University , Seongnam 13120, Republic of Korea
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Shin JY, Kim HN, Bhang SH, Yoon JK, Suh KY, Jeon NL, Kim BS. Topography-Guided Control of Local Migratory Behaviors and Protein Expression of Cancer Cells. Adv Healthc Mater 2017; 6. [PMID: 28509381 DOI: 10.1002/adhm.201700155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 04/16/2017] [Indexed: 12/19/2022]
Abstract
In vivo cancer cell migration and invasion are directed by biophysical guidance mechanisms such as pre-existing microtracks and basement membrane extracellular matrices. Here, this paper reports the correlation of the local migratory behavior of cancer cells and the biochemical signal expression using the topography that can guide or inhibit cell behaviors. To this end, the local apparent migration and the protein expression level are investigated with respect to the topographical feature size (flat, nanoline, and microline) and orientation (microline, microconcentric, and microradial) with the collectively migrating (A431) and individually migrating (MDA-MB-231 and U-87-MG) cancer cells. The results show that the migration and the protein expression of focal adhesion kinase, rho-associated protein kinase, and extracellular signal-regulated kinase are localized in the periphery of cell colony. Furthermore, the inhibition of migratory behavior at the periphery recues the protein expression, while the guidance of migration enhances the aforementioned protein expression. The results may imply the employ of biophysical inhibitory factors can help to control invasiveness of cancer cells during the progression state.
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Affiliation(s)
- Jung-Youn Shin
- School of Chemical and Biological Engineering; Seoul National University; Seoul 08826 Republic of Korea
| | - Hong Nam Kim
- Center for BioMicrosystems; Brain Science Institute; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering; Sungkyunkwan University; Suwon 16419 Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering; Seoul National University; Seoul 08826 Republic of Korea
| | - Kahp-Yang Suh
- School of Mechanical and Aerospace Engineering; Seoul National University; Seoul 08826 Republic of Korea
| | - Noo Li Jeon
- School of Mechanical and Aerospace Engineering; Seoul National University; Seoul 08826 Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering; Seoul National University; Seoul 08826 Republic of Korea
- Bio-MAX Institute; Institute for Chemical Processes; Seoul National University; Seoul 08826 Republic of Korea
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Yoon JK, Lee TI, Bhang SH, Shin JY, Myoung JM, Kim BS. Stretchable Piezoelectric Substrate Providing Pulsatile Mechanoelectric Cues for Cardiomyogenic Differentiation of Mesenchymal Stem Cells. ACS Appl Mater Interfaces 2017; 9:22101-22111. [PMID: 28560866 DOI: 10.1021/acsami.7b03050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 06/07/2023]
Abstract
Ex vivo induction of cardiomyogenic differentiation of mesenchymal stem cells (MSCs) before implantation would potentiate therapeutic efficacy of stem cell therapies for ischemic heart diseases because MSCs rarely undergo cardiomyogenic differentiation following implantation. In cardiac microenvironments, electric pulse and cyclic mechanical strain are sequentially produced. However, no study has applied the pulsatile mechanoelectric cues (PMEC) to stimulate cardiomyogenic differentiation of MSCs ex vivo. In this study, we developed a stretchable piezoelectric substrate (SPS) that can provide PMEC to human MSCs (hMSCs) for cardiomyogenic differentiation ex vivo. Our data showed that hMSCs subjected to PMEC by SPS underwent promoted cardiac phenotype development: cell alignment and the expression of cardiac markers (i.e., cardiac transcription factors, structural proteins, ion channel proteins, and gap junction proteins). The enhanced cardiac phenotype development was mediated by the upregulation of cardiomyogenic differentiation-related autocrine factor expression, focal adhesion kinase, and extracellular signal-regulated kinases signaling pathways. Thus, SPS providing electrical and mechanical regulation of stem cells may be utilized to potentiate hMSC therapies for myocardial infarction and provide a tool for the study of stem cell biology.
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Affiliation(s)
| | - Tae Il Lee
- Department of BioNano Technology, Gachon University , Seongnam 13557, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University , Suwon 16419, Republic of Korea
| | | | - Jae-Min Myoung
- Department of Materials Science and Engineering, Yonsei University , Seoul 03722, Republic of Korea
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Noh M, Kim SH, Kim J, Lee JR, Jeong GJ, Yoon JK, Kang S, Bhang SH, Yoon HH, Lee JC, Hwang NS, Kim BS. Graphene oxide reinforced hydrogels for osteogenic differentiation of human adipose-derived stem cells. RSC Adv 2017. [DOI: 10.1039/c7ra02410j] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
In this study, we designed graphene oxide-functionalized polyethylene glycol diacrylate hydrogels to assign cell adhesion-dependent biofunctionality, which resulted in cell adhesion dependent osteogenic differentiation of encapsulated stem cells.
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Yoon JK, Choi J, Lee HJ, Cho Y, Gwon YD, Jang Y, Kim S, Choi H, Lee JH, Kim YB. Distribution of Porcine Endogenous Retrovirus in Different Organs of the Hybrid of a Landrace and a Jeju Domestic Pig in Korea. Transplant Proc 2016; 47:2067-71. [PMID: 26293098 DOI: 10.1016/j.transproceed.2015.05.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 05/22/2015] [Indexed: 01/30/2023]
Abstract
Xenotransplantation offers a solution to the shortage of available organs for transplantation, and the pig represents an ideal source of such organs. However, porcine endogenous retrovirus (PERV), whose genome is integrated in pigs, has been suggested to pose a potential risk of xenotransmission. Expression of PERVs in different organs of pigs was carefully measured at DNA, mRNA, and protein levels, providing information valuable for the application of pig organs in xenotransplantation. An analysis of PERV DNA showed that a very similar number of PERV copies was present in the genome of all organs, whereas mRNA and protein levels of PERV varied depending on the organ, with kidney, liver, and spleen expressing high levels of both mRNA and protein. In contrast, mRNA and protein levels were dissimilar in the lung and brain, where mRNA levels were low but protein levels were high. This discrepancy indicates that mRNA levels are not always reflected in protein expression. In addition, the difference between mRNA and protein highlights the importance of choosing the proper analysis method for diagnosing viral infection. In summary, this study provides insight into the distribution of PERV in various organs at the DNA, mRNA, and protein levels, and also informs the proper selection of tissues or organs for future clinical xenotransplantation.
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Affiliation(s)
- J K Yoon
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - J Choi
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - H J Lee
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - Y Cho
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - Y D Gwon
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - Y Jang
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - S Kim
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - H Choi
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - J H Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Y B Kim
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea.
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Yoon JK, Kim HN, Bhang SH, Shin JY, Han J, La WG, Jeong GJ, Kang S, Lee JR, Oh J, Kim MS, Jeon NL, Kim BS. Enhanced Bone Repair by Guided Osteoblast Recruitment Using Topographically Defined Implant. Tissue Eng Part A 2016; 22:654-64. [PMID: 26976076 DOI: 10.1089/ten.tea.2015.0417] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The rapid recruitment of osteoblasts in bone defects is an essential prerequisite for efficient bone repair. Conventionally, osteoblast recruitment to bone defects and subsequent bone repair has been achieved using growth factors. Here, we present a methodology that can guide the recruitment of osteoblasts to bone defects with topographically defined implants (TIs) for efficient in vivo bone repair. We compared circular TIs that had microgrooves in parallel or radial arrangements with nonpatterned implants for osteoblast migration and in vivo bone formation. In vitro, the microgrooves in the TIs enhanced both the migration and proliferation of osteoblasts. Especially, the microgrooves with radial arrangement demonstrated a much higher efficiency of osteoblast recruitment to the implants than did the other types of implants, which may be due to the efficient guidance of cell migration toward the cell-free area of the implants. The expression of the intracellular signaling molecules responsible for the cell migration was also upregulated in osteoblasts on the microgrooved TIs. In vivo, the TI with radially defined topography demonstrated much greater bone repair in mouse calvarial defect models than in the other types of implants. Taken together, these results indicate that implants with physical guidance can enhance tissue repair by rapid cell recruitment.
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Affiliation(s)
- Jeong-Kee Yoon
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Hong Nam Kim
- 2 Center for BioMicrosystems, Brain Science Institute, Korea Institute of Science and Technology (KIST) , Seoul, Republic of Korea.,3 School of Mechanical and Aerospace Engineering, Seoul National University , Seoul, Republic of Korea
| | - Suk Ho Bhang
- 4 School of Chemical Engineering, Sungkyunkwan University , Suwon, Republic of Korea
| | - Jung-Youn Shin
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Jin Han
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Wan-Geun La
- 5 Department of Nanobiomedical Science, Dankook University , Chungnam, Republic of Korea
| | - Gun-Jae Jeong
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Seokyung Kang
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Ju-Ro Lee
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Jaesur Oh
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Min Sung Kim
- 3 School of Mechanical and Aerospace Engineering, Seoul National University , Seoul, Republic of Korea
| | - Noo Li Jeon
- 3 School of Mechanical and Aerospace Engineering, Seoul National University , Seoul, Republic of Korea
| | - Byung-Soo Kim
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea.,6 Bio-MAX Institute, Institute of Chemical Processes, Seoul National University , Seoul, Republic of Korea
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32
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Shin JY, Yoon JK, Noh MK, Bhang SH, Kim BS. Enhancing Therapeutic Efficacy and Reducing Cell Dosage in Stem Cell Transplantation Therapy for Ischemic Limb Diseases by Modifying the Cell Injection Site. Tissue Eng Part A 2016; 22:349-62. [PMID: 26824782 DOI: 10.1089/ten.tea.2015.0119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In conventional stem cell transplantation therapies for ischemic limb diseases, stem cells are generally transplanted into the ischemic region (IR), and most of the transplanted cells undergo hypoxia-mediated cell death. Due to massive cell death, the therapeutic efficacy is reduced and a high dose of stem cells is necessitated for the therapies. In this study, we investigated whether the therapeutic efficacy can be improved and the cell dosage can be reduced in the therapy for limb ischemia simply by modifying the stem cell injection site to a site where cell engraftment is improved and blood vessel sprouting is efficiently stimulated. Human mesenchymal stem cells (hMSCs) cultured under hypoxic condition, which simulates cells transplanted to IR, underwent extensive cell death in vitro. Importantly, cell death was significantly attenuated when hMSCs adhered first under normoxic condition for 24 h and then were exposed to hypoxic condition, which simulates cells transplanted to the border zone (BZ) in the upper thigh and migrated to IR. hMSCs, at doses of 2 × 10(5) or 2 × 10(6) cells, were injected into the IR or BZ of 5-week-old female athymic mice after ischemic hindlimb induction. Compared with human mesenchymal stem cell (hMSC) transplantation to the IR of mouse ischemic limbs, transplantation to the BZ significantly enhanced cell engraftment and paracrine factor secretion, which effectively stimulated vessel sprouting, enhanced blood perfusion in IR, and enabled the cell dosage reduction. Therefore, modification of the stem cell transplantation site would improve the current stem cell therapies for ischemic limb diseases in terms of cell dosage reduction and therapeutic efficacy enhancement.
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Affiliation(s)
- Jung-Youn Shin
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Jeong-Kee Yoon
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Myung Kyung Noh
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea
| | - Suk Ho Bhang
- 2 School of Chemical Engineering, Sungkyunkwan University , Suwon, Republic of Korea
| | - Byung-Soo Kim
- 1 School of Chemical and Biological Engineering, Seoul National University , Seoul, Republic of Korea.,3 Bio-MAX Institute, Institute for Chemical Processes, Seoul National University , Seoul, Republic of Korea
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Jang HK, Kim BS, Han J, Yoon JK, Lee JR, Jeong GJ, Shin JY. Therapeutic angiogenesis using tumor cell-conditioned medium. Biotechnol Prog 2016; 32:456-64. [DOI: 10.1002/btpr.2226] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/31/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Hyeon-Ki Jang
- Interdisciplinary Program for Bioengineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Byung-Soo Kim
- Interdisciplinary Program for Bioengineering; Seoul National University; Seoul 151-744 Republic of Korea
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
- Bio-MAX Inst.; Inst. for Chemical Processes, Seoul National University; Seoul 151-744 Republic of Korea
| | - Jin Han
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Ju-Ro Lee
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Gun-Jae Jeong
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
| | - Jung-Youn Shin
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
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Kang S, Bhang SH, Hwang S, Yoon JK, Song J, Jang HK, Kim S, Kim BS. Mesenchymal Stem Cells Aggregate and Deliver Gold Nanoparticles to Tumors for Photothermal Therapy. ACS Nano 2015; 9:9678-9690. [PMID: 26348606 DOI: 10.1021/acsnano.5b02207] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [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: 06/05/2023]
Abstract
Gold nanoparticles (AuNPs) have been extensively studied for photothermal cancer therapy because AuNPs can generate heat upon near-infrared irradiation. However, improving their tumor-targeting efficiency and optimizing the nanoparticle size for maximizing the photothermal effect remain challenging. We demonstrate that mesenchymal stem cells (MSCs) can aggregate pH-sensitive gold nanoparticles (PSAuNPs) in mildly acidic endosomes, target tumors, and be used for photothermal therapy. These aggregated structures had a higher cellular retention in comparison to pH-insensitive, control AuNPs (cAuNPs), which is important for the cell-based delivery process. PSAuNP-laden MSCs (MSC-PSAuNPs) injected intravenously to tumor-bearing mice show a 37-fold higher tumor-targeting efficiency (5.6% of the injected dose) and 8.3 °C higher heat generation compared to injections of cAuNPs after irradiation, which results in a significantly enhanced anticancer effect.
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Affiliation(s)
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
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Lee TJ, Kang S, Jeong GJ, Yoon JK, Bhang SH, Oh J, Kim BS. Incorporation of gold-coated microspheres into embryoid body of human embryonic stem cells for cardiomyogenic differentiation. Tissue Eng Part A 2014; 21:374-81. [PMID: 25065511 DOI: 10.1089/ten.tea.2014.0015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Human embryonic stem cells (hESCs) are a useful cell source for cardiac regeneration by stem cell therapy. In this study, we show that incorporation of gold-coated microspheres into hESC-derived embryoid bodies (EBs) enhances the cardiomyogenic differentiation process of pluripotent embryonic stem cells. A polycaprolactone (PCL) microsphere surface was coated with gold. Either gold-coated PCL microspheres (AuMS) or PCL microspheres (MS) were incorporated into hESC-derived EBs. AuMS and MS were not cytotoxic. AuMS promoted the expression of genes for mesodermal and cardiac mesodermal lineage cells, both of which are intermediates in the process of cardiac differentiation of hESCs on day 4 and the expression of cardiomyogenic differentiation markers on day 14 compared to MS. AuMS also enhanced gene expression of cardiac-specific extracellular matrices. Incorporation of gold-coated MS into hESC-derived EBs may provide a new platform for inducing cardiomyogenic differentiation of pluripotent embryonic stem cells.
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Affiliation(s)
- Tae-Jin Lee
- 1 Engineering Research Institute, Seoul National University , Seoul, Republic of Korea
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36
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Lee TJ, Park S, Bhang SH, Yoon JK, Jo I, Jeong GJ, Hong BH, Kim BS. Graphene enhances the cardiomyogenic differentiation of human embryonic stem cells. Biochem Biophys Res Commun 2014; 452:174-80. [PMID: 25152405 DOI: 10.1016/j.bbrc.2014.08.062] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 08/15/2014] [Indexed: 12/11/2022]
Abstract
Graphene has drawn attention as a substrate for stem cell culture and has been reported to stimulate the differentiation of multipotent adult stem cells. Here, we report that graphene enhances the cardiomyogenic differentiation of human embryonic stem cells (hESCs) at least in part, due to nanoroughness of graphene. Large-area graphene on glass coverslips was prepared via the chemical vapor deposition method. The coating of the graphene with vitronectin (VN) was required to ensure high viability of the hESCs cultured on the graphene. hESCs were cultured on either VN-coated glass (glass group) or VN-coated graphene (graphene group) for 21 days. The cells were also cultured on glass coated with Matrigel (Matrigel group), which is a substrate used in conventional, directed cardiomyogenic differentiation systems. The culture of hESCs on graphene promoted the expression of genes involved in the stepwise differentiation into mesodermal and endodermal lineage cells and subsequently cardiomyogenic differentiation compared with the culture on glass or Matrigel. In addition, the culture on graphene enhanced the gene expression of cardiac-specific extracellular matrices. Culture on graphene may provide a new platform for the development of stem cell therapies for ischemic heart diseases by enhancing the cardiomyogenic differentiation of hESCs.
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Affiliation(s)
- Tae-Jin Lee
- Engineering Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Subeom Park
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea
| | - Insu Jo
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
| | - Gun-Jae Jeong
- School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea
| | - Byung Hee Hong
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea.
| | - Byung-Soo Kim
- Engineering Research Institute, Seoul National University, Seoul, Republic of Korea; School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea; Institute of Bioengineering, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea.
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37
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Park J, Park S, Ryu S, Bhang SH, Kim J, Yoon JK, Park YH, Cho SP, Lee S, Hong BH, Kim BS. Graphene-regulated cardiomyogenic differentiation process of mesenchymal stem cells by enhancing the expression of extracellular matrix proteins and cell signaling molecules. Adv Healthc Mater 2014; 3:176-81. [PMID: 23949999 DOI: 10.1002/adhm.201300177] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/28/2013] [Indexed: 12/26/2022]
Abstract
The potential of graphene as a mesenchymal stem cell (MSC) culture substrate to promote cardiomyogenic differentiation is demonstrated. Graphene exhibits no sign of cytotoxicity for stem cell culture. MSCs are committed toward cardiomyogenic lineage by simply culturing them on graphene. This may be attributed, at least partially, to the regulation of expression levels of extracellular matrix and signaling molecules.
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Affiliation(s)
- Jooyeon Park
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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38
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Sholukh AM, Siddappa NB, Shanmuganathan V, Lakhashe SK, Rasmussen RA, Watkins JD, Vyas HK, Mukhtar MM, Hemashettar G, Thorat S, Yoon JK, Villinger F, Novembre FJ, Landucci G, Forthal DN, Ratcliffe S, Robert-Guroff M, Polonis V, Montefiori DC, Ertl HC, Ruprecht RM. Passive immunization with polyclonal anti-SHIV IgG: partial protection or increased acquisition of heterologous tier 2 SHIV – depending on IgG dose. Retrovirology 2012. [PMCID: PMC3442109 DOI: 10.1186/1742-4690-9-s2-p41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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39
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Yong SW, Yoon JK, An YS, Lee PH. A comparison of cerebral glucose metabolism in Parkinson's disease, Parkinson's disease dementia and dementia with Lewy bodies. Eur J Neurol 2007; 14:1357-62. [PMID: 17941855 DOI: 10.1111/j.1468-1331.2007.01977.x] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Parkinson's disease dementia (PDD) and dementia with Lewy bodies (DLB) share many similar aspects, and making a clinical diagnosis of one disorder over the other relies heavily on an arbitrary criterion, so-called 1-year rule. This study was designed to search for any difference of metabolic patterns in these two disorders using F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) images. We enrolled 16 patients with PD, 13 patients with PDD, and seven patients with DLB. FDG PET was performed, and images were reconstructed by iterative reconstruction using the computed tomography (CT) images, and were normalized to a standard template. Statistical comparison between groups were performed on a voxel-by-voxel basis using t-statistics (two-sample t-test). Compared with the patients with PD, both PDD and DLB patients showed similar patterns of decreased metabolism in bilateral inferior and medial frontal lobes, and right parietal lobe (P(uncorrected) < 0.001). In a direct comparison, DLB patients had significant metabolic decrease (p(uncorrected) < 0.005) in the anterior cingulate compared with those with PDD. These findings support the concept that PDD and DLB have similar underlying neurobiological characteristics, and that they can be regarded as a spectrum of Lewy body disorders.
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Affiliation(s)
- S W Yong
- Department of Neurology, Ajou University School of Medicine, Suwon, South Korea
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40
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Lee KH, Yoon JK, Lee MG, Lee SH, Lee WR, Kim BT. Dipyridamole myocardial SPECT with low heart rate response indicates cardiac autonomic dysfunction in patients with diabetes. J Nucl Cardiol 2001; 8:129-35. [PMID: 11295689 DOI: 10.1067/mnc.2001.111798] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Because dipyridamole is used to assess heart rate (HR) variability, we investigated whether a low HR response during dipyridamole single photon emission computed tomography (SPECT) in patients with diabetes indicates the presence of cardiac autonomic neuropathy (CAN). METHODS AND RESULTS Subjects were 61 non-insulin-dependent diabetes patients without perfusion defects, myocardial infarction, or arrhythmia who underwent thallium 201 SPECT imaging. The control group comprised 28 subjects without diabetes. HR was measured during infusion of dipyridamole at a rate of 0.14 mg/kg/min, and peak-baseline ratios of 1.20 or less were defined as low. CAN severity was classified by standard autonomic function tests as severe (n = 22), mild (n = 19), or none (n = 20). HR ratios were significantly attenuated in patients with diabetes compared with those in control subjects (1.22 +/- 0.12 vs 1.32 +/- 0.12, P <.001). Among the patients with diabetes, HR ratios decreased as CAN severity increased from none (1.32 +/- 0.10) to mild (1.23 +/- 0.12, P <.05) to severe (1.13 +/- 0.08, P <.005). There was good correlation between HR ratio and R-R interval ratio to deep breathing and to Valsalva, and patients with low HR ratios showed an attenuated response to both tests (all P <.001). The sensitivity and specificity of HR ratios in the detection of CAN were 77% and 74% for severe CAN and 63% and 90% for mild-to-severe CAN, respectively. CONCLUSIONS In patients with diabetes who have normal dipyridamole SPECT results, an attenuated HR response observed during stress indicates a high likelihood of CAN. Further work that assesses these results in diabetes patients with coronary artery disease is warranted.
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Affiliation(s)
- K H Lee
- Department of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
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Yoon JK, Lee KH, Park JM, Lee SH, Lee MK, Lee WR, Kim BT. Usefulness of diabetic retinopathy as a marker of risk for thallium myocardial perfusion defects in non-insulin-dependent diabetes mellitus. Am J Cardiol 2001; 87:456-9, A6. [PMID: 11179535 DOI: 10.1016/s0002-9149(00)01404-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Among 236 non-insulin-dependent diabetics with clinically suspected coronary artery disease, the rate of thallium-201 myocardial perfusion defects was significantly higher in subjects with (40.6%) than without (22.1%) diabetic retinopathy. Retinopathy was associated with a higher risk of perfusion defects in subjects with cardiac and noncardiac chest pain, and may thus be a useful marker for selecting patients in whom thallium scintigraphy screening is warranted.
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Affiliation(s)
- J K Yoon
- Department of Nuclear Medicine, Cardiovascular Institute, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
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Yoon JK, Lee HH, Choi BM, Kim KB, Park HY, Lim JY, Choung JT, Tockgo YC. Transplacental transfer and age-related levels of serum IgG antibodies to the capsular polysaccharides of Streptococcus pneumoniae types 14 and 19 in Korea. J Korean Med Sci 2001; 16:9-14. [PMID: 11289408 PMCID: PMC3054566 DOI: 10.3346/jkms.2001.16.1.9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Little is known about the prevalence of naturally acquired IgG antibodies to the capsular polysaccharides of Streptococcus pneumoniae (pneumococcal IgG) in Korea. In the present study, we investigated transplacental transfer and age-related levels of pneumococcal IgG to provide background seroepidemiologic data for S. pneumoniae in Korea. One hundred thirty eight sera were assayed by ELISA for IgG to pneumococcal polysaccharide capsular serotypes 14 and 19, the predominant serotypes for under 15 yr of age in Korea. The subjects were divided into 7 subgroups according to age. The cord/maternal geometric mean titer of pneumococcal were 4.47+/-5.88/5.21 +/- 5.88 for serotype 14, and 4.68 +/- 5.55/6.55 +/- 6.92 for serotype 1 9 (mean +/- standard deviation, microg/mL). After birth, the geometric mean titers of pneumococcal IgG for serotypes 14 and 19 expressed in microg/mL were 1.18+/-2.12 and 1.41+/-2.17 in the 0-6 months group, 0.27+/-0.19 and 0.69+/-0.93 in 7-12 months, 0.21+/-0.22 and 0.64+/-1.32 in 1-2 yr, 0.69+/-0.78 and 2.65+/-2.46 in 3-6 yr, 2.52+/-2.72 and 8.29+/-4.24 in 7-10 yr, respectively. In conclusion, reduced transplacental transfer and very low serum concentrations of pneumococcal IgG may contribute to the susceptibility of neonates, infants, and young children to S. pneumoniae infection.
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Affiliation(s)
- J K Yoon
- Department of Pediatrics, College of Medicine, Kwandong University, Kangnung, Korea
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Abstract
Paraxial mesoderm in vertebrates gives rise to all trunk and limb skeletal muscles, the trunk skeleton, and portions of the trunk dermis and vasculature. We show here that germline deletion of mouse pMesogenin1, a bHLH class gene specifically expressed in developmentally immature unsegmented paraxial mesoderm, causes complete failure of somite formation and segmentation of the body trunk and tail. At the molecular level, the phenotype features dramatic loss of expression within the presomitic mesoderm of Notch/Delta pathway components and oscillating somitic clock genes that are thought to control segmentation and somitogenesis. Subsequent patterning and specification steps for paraxial mesoderm also fail, leading to a complete absence of all trunk paraxial mesoderm derivatives, which include skeletal muscle, vertebrae, and ribs. We infer that pMesogenin1 is an essential upstream regulator of trunk paraxial mesoderm development and segmentation.
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Affiliation(s)
- J K Yoon
- Division of Biology, California Institute of Technology, Pasadena, California 91125, USA
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Abstract
A new bHLH gene from mouse that we call pMesogenin1 (referring to paraxial mesoderm-specific expression and regulatory capacities) and its candidate ortholog from Xenopus were isolated and studied comparatively. In both organisms the gene is specifically expressed in unsegmented paraxial mesoderm and its immediate progenitors. A striking feature of pMesogenin1 expression is that it terminates abruptly in presumptive somites (somitomeres). Somitomeres rostral to the pMesogenin1 domain strongly upregulate expression of pMesogenin's closest known paralogs, MesP1 and MesP2 (Thylacine1/2 in Xenopus). Subsequently, the most rostral somitomere becomes a new somite and expression of MesP1/2 is sharply downregulated before this transition. Thus, expression patterns of these bHLH genes, together with that of an additional bHLH gene in the mouse, Paraxis, collectively define discrete but highly dynamic prepatterned subdomains of the paraxial mesoderm. In functional assays, we show that pMesogenin1 from either mouse or frog can efficiently drive nonmesodermal cells to assume a phenotype with molecular and cellular characteristics of early paraxial mesoderm. Among genes induced by added pMesogenin1 is Xwnt-8, a signaling factor that induces a similar repertoire of marker genes and a similar cellular phenotype. Additional target genes induced by pMesogenin1 are ESR4/5, regulators known to play a significant role in segmentation of paraxial mesoderm (W. C. Jen et al., 1999, Genes Dev. 13, 1486-1499). pMesogenin1 differs from other known mesoderm-inducing transcription factors because it does not also activate a dorsal (future axial) mesoderm phenotype, suggesting that pMesogenin1 is involved in specifying paraxial mesoderm. In the context of the intact frog embryo, ectopic pMesogenin1 also actively suppressed axial mesoderm markers and disrupted normal formation of notochord. In addition, we found evidence for cross-regulatory interactions between pMesogenin1 and T-box transcription factors, a family of genes normally expressed in a broader pattern and known to induce multiple types of mesoderm. Based on our results and results from prior studies of related bHLH genes, we propose that pMesogenin1 and its closest known relatives, MesP1/2 (in mouse) and Thylacine1/2 (in Xenopus), comprise a bHLH subfamily devoted to formation and segmentation of paraxial mesoderm.
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Affiliation(s)
- J K Yoon
- Division of Biology, 156-29, California Institute of Technology, Pasadena, California, 91125, USA
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Kwon YT, Balogh SA, Davydov IV, Kashina AS, Yoon JK, Xie Y, Gaur A, Hyde L, Denenberg VH, Varshavsky A. Altered activity, social behavior, and spatial memory in mice lacking the NTAN1p amidase and the asparagine branch of the N-end rule pathway. Mol Cell Biol 2000; 20:4135-48. [PMID: 10805755 PMCID: PMC85783 DOI: 10.1128/mcb.20.11.4135-4148.2000] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/1999] [Accepted: 03/08/2000] [Indexed: 11/20/2022] Open
Abstract
The N-end rule relates the in vivo half-life of a protein to the identity of its N-terminal residue. N-terminal asparagine and glutamine are tertiary destabilizing residues, in that they are enzymatically deamidated to yield secondary destabilizing residues aspartate and glutamate, which are conjugated to arginine, a primary destabilizing residue. N-terminal arginine of a substrate protein is bound by the Ubr1-encoded E3alpha, the E3 component of the ubiquitin-proteasome-dependent N-end rule pathway. We describe the construction and analysis of mouse strains lacking the asparagine-specific N-terminal amidase (Nt(N)-amidase), encoded by the Ntan1 gene. In wild-type embryos, Ntan1 was strongly expressed in the branchial arches and in the tail and limb buds. The Ntan1(-/-) mouse strains lacked the Nt(N)-amidase activity but retained glutamine-specific Nt(Q)-amidase, indicating that the two enzymes are encoded by different genes. Among the normally short-lived N-end rule substrates, only those bearing N-terminal asparagine became long-lived in Ntan1(-/-) fibroblasts. The Ntan1(-/-) mice were fertile and outwardly normal but differed from their congenic wild-type counterparts in spontaneous activity, spatial memory, and a socially conditioned exploratory phenotype that has not been previously described with other mouse strains.
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Affiliation(s)
- Y T Kwon
- Division of Biology, California Institute of Technology, Pasadena, California 91125, USA
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Kwon YT, Reiss Y, Fried VA, Hershko A, Yoon JK, Gonda DK, Sangan P, Copeland NG, Jenkins NA, Varshavsky A. The mouse and human genes encoding the recognition component of the N-end rule pathway. Proc Natl Acad Sci U S A 1998; 95:7898-903. [PMID: 9653112 PMCID: PMC20901 DOI: 10.1073/pnas.95.14.7898] [Citation(s) in RCA: 136] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/1998] [Indexed: 02/08/2023] Open
Abstract
The N-end rule relates the in vivo half-life of a protein to the identity of its N-terminal residue. The N-end rule pathway is one proteolytic pathway of the ubiquitin system. The recognition component of this pathway, called N-recognin or E3, binds to a destabilizing N-terminal residue of a substrate protein and participates in the formation of a substrate-linked multiubiquitin chain. We report the cloning of the mouse and human Ubr1 cDNAs and genes that encode a mammalian N-recognin called E3alpha. Mouse UBR1p (E3alpha) is a 1,757-residue (200-kDa) protein that contains regions of sequence similarity to the 225-kDa Ubr1p of the yeast Saccharomyces cerevisiae. Mouse and human UBR1p have apparent homologs in other eukaryotes as well, thus defining a distinct family of proteins, the UBR family. The residues essential for substrate recognition by the yeast Ubr1p are conserved in the mouse UBR1p. The regions of similarity among the UBR family members include a putative zinc finger and RING-H2 finger, another zinc-binding domain. Ubr1 is located in the middle of mouse chromosome 2 and in the syntenic 15q15-q21.1 region of human chromosome 15. Mouse Ubr1 spans approximately 120 kilobases of genomic DNA and contains approximately 50 exons. Ubr1 is ubiquitously expressed in adults, with skeletal muscle and heart being the sites of highest expression. In mouse embryos, the Ubr1 expression is highest in the branchial arches and in the tail and limb buds. The cloning of Ubr1 makes possible the construction of Ubr1-lacking mouse strains, a prerequisite for the functional understanding of the mammalian N-end rule pathway.
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Affiliation(s)
- Y T Kwon
- Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA
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Yoon JK, Olson EN, Arnold HH, Wold BJ. Different MRF4 knockout alleles differentially disrupt Myf-5 expression: cis-regulatory interactions at the MRF4/Myf-5 locus. Dev Biol 1997; 188:349-62. [PMID: 9268580 DOI: 10.1006/dbio.1997.8670] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Three different null alleles of the myogenic bHLH gene MRF4/herculin/Myf-6 were created recently. The three alleles were similar in design but were surprisingly different in the intensity of their phenotypes, which ranged from complete viability of homozygotes to complete lethality. One possible explanation for these differences is that each mutation altered expression from the nearby Myf-5 gene to a different extent. This possibility was first raised by the observation that the most severe MRF4 knockout allele expresses no Myf-5 RNA and is a developmental phenocopy of the Myf-5 null mutation. Furthermore, initial studies of the two weaker alleles had shown that their differences in viability correlate with the intensity of rib skeletal defects, and the most extreme version of this rib defect is the hallmark phenotype of Myf-5 null animals. In the present study we tested this hypothesis for the two milder MRF4 alleles. By analyzing compound heterozygous animals carrying either the intermediate or the weakest MRF4 knockout allele on one chromosome 10 and a Myf-5 knockout allele on the other chromosome, we found that both of these MRF4 alleles apparently downregulate Myf-5 expression by a cis-acting mechanism. Compound heterozygotes showed increased mortality of the normally viable MRF4 allele, together with intensified rib defects for both MRF4 alleles and increased deficits in myotomal Myf-5 expression. The allele-specific gradation in phenotypes also suggested that rib morphogenesis is profoundly sensitive to quantitative differences in Myf-5 function if Myf-5 products drop below hemizygous levels. The mechanistic basis for cis interactions at the MRF4/Myf-5 locus was further examined by fusing a DNA segment containing the entire MRF4 structural gene, including all sequences deleted in the three MRF knockout alleles, with a basal promoter and a lacZ reporter. Transgenic embryos showed specific LacZ expression in myotomes in a pattern that closely resembles the expression of Myf-5 RNA. cis-acting interactions between Myf-5 and MRF4 may therefore play a significant role in regulating expression of these genes in the early myotomes of wildtype embryos.
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Affiliation(s)
- J K Yoon
- Division of Biology, 156-29, California Institute of Technology, Pasadena, California, 91125, USA
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Abstract
The purpose of this study was to determine whether the addition of small quantities of minor lecithin components (phosphatidylinositol, phosphatidic acid, lysophosphatidylethanolamine, and cholesterol) and Pluronic F68 to lecithin could improve the stability of lecithin-stabilized perfluorocarbon emulsions. Attempts were made to correlate emulsion stability with interfacial properties (tension and charge). Dynamic interfacial tension was determined using a Teflon Wilhelmy plate method [reported previously (1)]. Emulsions were prepared by microfluidization. Microelectrophoresis was used to measure emulsion droplet charge, and photon correlation spectroscopy and Coulter analysis were used to determine emulsion stability as a function of droplet size. Thermal kinetic accelerated stability testing was conducted. Various droplet size parameters were used to compare emulsion stabilities, and an overall stability ranking, based on these parameters, was obtained for each emulsion. Small quantities of additives altered emulsion stability and these data were correlated with interfacial properties and initial droplet diameters. The addition of cholesterol to lecithin resulted in the most stable perfluorocarbon emulsion.
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Affiliation(s)
- J K Yoon
- Department of Pharmaceutics, College of Pharmacy, University of Illinois at Chicago 60612, USA
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49
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Abstract
MRF4 (herculin/Myf-6) is one of the four member MyoD family of transcription factors identified by their ability to enforce skeletal muscle differentiation upon a wide variety of nonmuscle cell types. In this study the mouse germline MRF4 gene was disrupted by targeted recombination. Animals homozygous for the MRF4bh1 allele, a deletion of the functionally essential bHLH domain, displayed defective axial myogenesis and rib pattern formation, and they died at birth. Differences in somitogenesis between homozygous MRF4bh1 embryos and their wild-type littermates provided evidence for three distinct myogenic regulatory programs (My1-My3) in the somite, which correlate temporally and spatially with three waves of cellular recruitment to the expanding myotome. The first program (My1), marked initially by Myf-5 expression and followed by myogenin, began on schedule in the MRF4bh1/bh1 embryos at day 8 post coitum (E8). A second program (My2) was highly deficient in homozygous mutant MRF4 embryos, and normal expansion of the myotome failed. Moreover, expression of downstream muscle-specific genes, including FGF-6, which is a candidate regulator of inductive interactions, did not occur normally. The onset of MyoD expression around E10.5 in wild-type embryos marks a third myotomal program (My3), the execution of which was somewhat delayed in MRF4 mutant embryos but ultimately led to extensive myogenesis in the trunk. By E15 it appeared to have largely compensated for the defective My2 program in MRF4 mutants. Homozygous MRF4bh1 animals also showed improper rib pattern formation perhaps due to the absence of signals from cells expressing the My2 program. Finally, a later and relatively mild phenotype was detected in intercostal muscles of newborn animals.
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Affiliation(s)
- A Patapoutian
- Division of Biology 156-29, California Institute of Technology, Pasadena 91125, USA
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Yoon JK, Lau LF. Involvement of JunD in transcriptional activation of the orphan receptor gene nur77 by nerve growth factor and membrane depolarization in PC12 cells. Mol Cell Biol 1994; 14:7731-43. [PMID: 7969116 PMCID: PMC359314 DOI: 10.1128/mcb.14.12.7731-7743.1994] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
nur77, an immediate-early gene that encodes an orphan nuclear receptor, is rapidly and transiently induced by nerve growth factor (NGF) stimulation or membrane depolarization in the rat pheochromocytoma-derived cell line PC12. The Nur77 protein can act as a potent transcription activator and may function to regulate the expression of downstream genes in response to extracellular stimuli. We show here that activation of nur77 by NGF treatment and membrane depolarization is signalled through distinct pathways. These distinct signals appear to converge on the same transcription factors acting on the same promoter elements. We show that nur77 activation by both processes requires two cis-acting AP1-like elements, NAP1 and NAP2, which contain the core sequence TGCGTCA centered at 67 and 38 nucleotides upstream of the transcription start site. The NAP elements can confer inducibility by NGF and membrane depolarization on an otherwise unresponsive heterologous promoter. We identified JunD as a key mediator of nur77 activation by reason of the following observations. (i) JunD, but not CREB or other members of the Fos/Jun family, is a component of NAP binding activity in PC12 cell nuclear extracts. (ii) JunD, but not other Fos/Jun family members, specifically transactivates the nur77 promoter through the NAP elements (iii) A dominant-negative mutant of JunD effectively abolishes the activation of nur77 by either NGF treatment or membrane depolarization. These data draw a contrast between the regulation of nur77 with that of c-fos, in which the sequence requirements for activation by NGF treatment and membrane depolarization appear separable, and CREB appears to play a role in activation by both NGF and membrane depolarization.
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Affiliation(s)
- J K Yoon
- Department of Genetics, University of Illinois College of Medicine, Chicago 60612
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