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Quiroz VM, Wang Y, Rakoski AI, Kasinathan D, Neshat SY, Hollister-Lock J, Doloff JC. Hydrogel Alginate Considerations for Improved 3D Matrix Stability and Cell Graft Viability and Function in Studying Type 1 Diabetes In Vitro. Adv Biol (Weinh) 2024:e2300502. [PMID: 38243878 DOI: 10.1002/adbi.202300502] [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: 12/19/2023] [Indexed: 01/22/2024]
Abstract
Biomedical devices such as islet-encapsulating systems are used for treatment of type 1 diabetes (T1D). Despite recent strides in preventing biomaterial fibrosis, challenges remain for biomaterial scaffolds due to limitations on cells contained within. The study demonstrates that proliferation and function of insulinoma (INS-1) cells as well as pancreatic rat islets may be improved in alginate hydrogels with optimized gel%, crosslinking, and stiffness. Quantitative polymerase chain reaction (qPCR)-based graft phenotyping of encapsulated INS-1 cells and pancreatic islets identified a hydrogel stiffness range between 600 and 1000 Pa that improved insulin Ins and Pdx1 gene expression as well as glucose-sensitive insulin-secretion. Barium chloride (BaCl2 ) crosslinking time is also optimized due to toxicity of extended exposure. Despite possible benefits to cell viability, calcium chloride (CaCl2 )-crosslinked hydrogels exhibited a sharp storage modulus loss in vitro. Despite improved stability, BaCl2 -crosslinked hydrogels also exhibited stiffness losses over the same timeframe. It is believed that this is due to ion exchange with other species in culture media, as hydrogels incubated in dIH2 O exhibited significantly improved stability. To maintain cell viability and function while increasing 3D matrix stability, a range of useful media:dIH2 O dilution ratios for use are identified. Such findings have importance to carry out characterization and optimization of cell microphysiological systems with high fidelity in vitro.
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Affiliation(s)
- Victor M Quiroz
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Yuanjia Wang
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Amanda I Rakoski
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Devi Kasinathan
- Department of Physiology, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Sarah Y Neshat
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Jennifer Hollister-Lock
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, One Joslin Place, Boston, MA, 02215, USA
| | - Joshua C Doloff
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Oncology, Sidney-Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
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Tsehay Y, Zeng Y, Weber-Levine C, Awosika T, Kerensky M, Hersh AM, Ou Z, Jiang K, Bhimreddy M, Bauer SJ, Theodore JN, Quiroz VM, Suk I, Alomari S, Sun J, Tong S, Thakor N, Doloff JC, Theodore N, Manbachi A. Low-Intensity Pulsed Ultrasound Neuromodulation of a Rodent's Spinal Cord Suppresses Motor Evoked Potentials. IEEE Trans Biomed Eng 2023; 70:1992-2001. [PMID: 37018313 PMCID: PMC10510849 DOI: 10.1109/tbme.2022.3233345] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Here we investigate the ability of low-intensity ultrasound (LIUS) applied to the spinal cord to modulate the transmission of motor signals. METHODS Male adult Sprague-Dawley rats (n = 10, 250-300 g, 15 weeks old) were used in this study. Anesthesia was initially induced with 2% isoflurane carried by oxygen at 4 L/min via a nose cone. Cranial, upper extremity, and lower extremity electrodes were placed. A thoracic laminectomy was performed to expose the spinal cord at the T11 and T12 vertebral levels. A LIUS transducer was coupled to the exposed spinal cord, and motor evoked potentials (MEPs) were acquired each minute for either 5- or 10-minutes of sonication. Following the sonication period, the ultrasound was turned off and post-sonication MEPs were acquired for an additional 5 minutes. RESULTS Hindlimb MEP amplitude significantly decreased during sonication in both the 5- (p < 0.001) and 10-min (p = 0.004) cohorts with a corresponding gradual recovery to baseline. Forelimb MEP amplitude did not demonstrate any statistically significant changes during sonication in either the 5- (p = 0.46) or 10-min (p = 0.80) trials. CONCLUSION LIUS applied to the spinal cord suppresses MEP signals caudal to the site of sonication, with recovery of MEPs to baseline after sonication. SIGNIFICANCE LIUS can suppress motor signals in the spinal cord and may be useful in treating movement disorders driven by excessive excitation of spinal neurons.
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Doloff JC, Ma M, Sadraei A, Tam HH, Farah S, Hollister-Lock J, Vegas AJ, Veiseh O, Quiroz VM, Rakoski A, Aresta-DaSilva S, Bader AR, Griffin M, Weir GC, Brehm MA, Shultz LD, Langer R, Greiner DL, Anderson DG. Identification of a humanized mouse model for functional testing of immune-mediated biomaterial foreign body response. Sci Adv 2023; 9:eade9488. [PMID: 37327334 PMCID: PMC10275594 DOI: 10.1126/sciadv.ade9488] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 05/05/2023] [Indexed: 06/18/2023]
Abstract
Biomedical devices comprise a major component of modern medicine, however immune-mediated fibrosis and rejection can limit their function over time. Here, we describe a humanized mouse model that recapitulates fibrosis following biomaterial implantation. Cellular and cytokine responses to multiple biomaterials were evaluated across different implant sites. Human innate immune macrophages were verified as essential to biomaterial rejection in this model and were capable of cross-talk with mouse fibroblasts for collagen matrix deposition. Cytokine and cytokine receptor array analysis confirmed core signaling in the fibrotic cascade. Foreign body giant cell formation, often unobserved in mice, was also prominent. Last, high-resolution microscopy coupled with multiplexed antibody capture digital profiling analysis supplied spatial resolution of rejection responses. This model enables the study of human immune cell-mediated fibrosis and interactions with implanted biomaterials and devices.
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Affiliation(s)
- Joshua C. Doloff
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University, Baltimore, MD 21287, USA
| | - Minglin Ma
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
| | - Atieh Sadraei
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Hok Hei Tam
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Shady Farah
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Jennifer Hollister-Lock
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, One Joslin Place, Boston, MA 02215, USA
| | - Arturo J. Vegas
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
| | - Omid Veiseh
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
| | - Victor M. Quiroz
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University, Baltimore, MD 21287, USA
| | - Amanda Rakoski
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University, Baltimore, MD 21287, USA
| | - Stephanie Aresta-DaSilva
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
| | - Andrew R. Bader
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
| | - Marissa Griffin
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
| | - Gordon C. Weir
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, One Joslin Place, Boston, MA 02215, USA
| | - Michael A. Brehm
- Program in Molecular Medicine, Diabetes Centre of Excellence, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | | | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Dale L. Greiner
- Program in Molecular Medicine, Diabetes Centre of Excellence, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Daniel G. Anderson
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA 02139, USA
- Department of Anesthesiology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
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Neshat SY, Bauer SJ, Rhodes KR, Quiroz VM, Wong VW, Lowmaster SM, Tzeng SY, Green JJ, Doloff JC. Improvement of Islet Engrafts via Treg Induction Using Immunomodulating Polymeric Tolerogenic Microparticles. ACS Biomater Sci Eng 2023; 9:3522-3534. [PMID: 37233985 DOI: 10.1021/acsbiomaterials.3c00329] [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] [Indexed: 05/27/2023]
Abstract
Type 1 diabetes (T1D) is a life-threatening condition for which islet transplantation offers a way to extend longevity and vastly improve quality of life, but the degree and duration of success can vary greatly due to the patient's protective immunity against foreign material. The field is in need of cellular engineering modalities to promote a localized, tolerogenic environment to protect transplanted islet tissue. Artificial antigen-presenting cells (aAPCs) can be designed exogenously to mimic immune cells, such as dendritic cells, and administered to patients, allowing greater control over T cell differentiation. As regulatory T cell (Treg) modulation can reduce the activity of cytotoxic T-effector populations, this strategy can be used to promote immune acceptance of both biomaterials and cellular transplants, such as islets. A new class of poly(lactic-co-glycolic acid) (PLGA) and PLGA/PBAE-blend aAPCs containing transforming growth factor beta and conjugated with anti-CD3 and anti-CD28 antibodies, called tolerogenic aAPCs (TolAPCs), are specifically designed to generate a tolerogenic response by inducing Tregs. We characterized TolAPCs' physical and chemical properties via advanced particle imaging and sizing modalities and investigated their impact on the local and systemic immune system across BALB/c and C57BL/6 mouse strains as well as healthy male and female mice via histologic, gene expression, and immunofluorescence staining methods. Strain-specific differences were observed, whereas sex made no difference in the TolAPC response. TolAPCs stimulated the expansion of FOXP3+ Tregs and provided islet cell protection, maintaining improved glucose-stimulated insulin secretion in vitro when co-cultured with cytotoxic CD8+ T cells. We also explored the ability of this TolAPC platform to promote tolerance in a streptozotocin-induced murine T1D C57BL/6 mouse model. We achieved partial islet protection over the first few days following co-injection with PLGA/PBAE TolAPCs; however, grafts failed soon thereafter. Analysis of the local injection site demonstrated that other immune cell types, including APCs and cytotoxic natural killer cells, increased in the islet injection site. While we aimed to promote a localized tolerogenic microenvironment in vivo using biodegradable TolAPCs to induce Tregs and extend islet transplant durability, further TolAPC improvements will be required to both elongate efficacy and control additional immune cell responders.
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Affiliation(s)
- Sarah Y Neshat
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Stuart J Bauer
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kelly R Rhodes
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Victor M Quiroz
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
| | - Valerie W Wong
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
| | - Shirley M Lowmaster
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
| | - Stephany Y Tzeng
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jordan J Green
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Oncology, Sidney-Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
- Departments of Ophthalmology and Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
| | - Joshua C Doloff
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Oncology, Sidney-Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
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Neshat SY, Quiroz VM, Wang Y, Tamayo S, Doloff JC. Liver Disease: Induction, Progression, Immunological Mechanisms, and Therapeutic Interventions. Int J Mol Sci 2021; 22:ijms22136777. [PMID: 34202537 PMCID: PMC8267746 DOI: 10.3390/ijms22136777] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 02/06/2023] Open
Abstract
The liver is an organ with impressive regenerative potential and has been shown to heal sizable portions after their removal. However, certain diseases can overstimulate its potential to self-heal and cause excessive cellular matrix and collagen buildup. Decompensation of liver fibrosis leads to cirrhosis, a buildup of fibrotic ECM that impedes the liver’s ability to efficiently exchange fluid. This review summarizes the complex immunological activities in different liver diseases, and how failure to maintain liver homeostasis leads to progressive fibrotic tissue development. We also discuss a variety of pathologies that lead to liver cirrhosis, such as alcoholic liver disease and chronic hepatitis B virus (HBV). Mesenchymal stem cells are widely studied for their potential in tissue replacement and engineering. Herein, we discuss the potential of MSCs to regulate immune response and alter the disease state. Substantial efforts have been performed in preclinical animal testing, showing promising results following inhibition of host immunity. Finally, we outline the current state of clinical trials with mesenchymal stem cells and other cellular and non-cellular therapies as they relate to the detection and treatment of liver cirrhosis.
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Affiliation(s)
- Sarah Y. Neshat
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.Y.N.); (V.M.Q.); (Y.W.); (S.T.)
| | - Victor M. Quiroz
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.Y.N.); (V.M.Q.); (Y.W.); (S.T.)
| | - Yuanjia Wang
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.Y.N.); (V.M.Q.); (Y.W.); (S.T.)
| | - Sebastian Tamayo
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.Y.N.); (V.M.Q.); (Y.W.); (S.T.)
| | - Joshua C. Doloff
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.Y.N.); (V.M.Q.); (Y.W.); (S.T.)
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA
- Sidney Kimmel Comprehensive Cancer Center, Oncology-Cancer Immunology Sidney Kimmel Comprehensive Cancer Center and the Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Correspondence:
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