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Walker SN, Lucas K, Dewey MJ, Badylak S, Hussey G, Flax J, McGrath JL. Rapid Assessment of Biomarkers on Single Extracellular Vesicles Using 'Catch and Display' on Ultrathin Nanoporous Silicon Nitride Membranes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.29.589900. [PMID: 38746341 PMCID: PMC11092443 DOI: 10.1101/2024.04.29.589900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Extracellular vesicles (EVs) are particles secreted by all cells that carry bioactive cargo and facilitate intercellular communication with roles in normal physiology and disease pathogenesis. EVs have tremendous diagnostic and therapeutic potential and accordingly, the EV field has grown exponentially in recent years. Bulk assays lack the sensitivity to detect rare EV subsets relevant to disease, and while single EV analysis techniques remedy this, they are undermined by complicated detection schemes often coupled with prohibitive instrumentation. To address these issues, we propose a microfluidic technique for EV characterization called 'catch and display for liquid biopsy (CAD-LB)'. CAD-LB rapidly captures fluorescently labeled EVs in the similarly-sized pores of an ultrathin silicon nitride membrane. Minimally processed sample is introduced via pipette injection into a simple microfluidic device which is directly imaged using fluorescence microscopy for a rapid assessment of EV number and biomarker colocalization. In this work, nanoparticles were first used to define the accuracy and dynamic range for counting and colocalization by CAD-LB. Following this, the same assessments were made for purified EVs and for unpurified EVs in plasma. Biomarker detection was validated using CD9 in which Western blot analysis confirmed that CAD-LB faithfully recapitulated differing expression levels among samples. We further verified that CAD-LB captured the known increase in EV-associated ICAM-1 following the cytokine stimulation of endothelial cells. Finally, to demonstrate CAD-LB's clinical potential, we show that EV biomarkers indicative of immunotherapy responsiveness are successfully detected in the plasma of bladder cancer patients undergoing immune checkpoint blockade.
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Affiliation(s)
- Samuel N. Walker
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14627, United States
| | - Kilean Lucas
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14627, United States
| | - Marley J. Dewey
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, United States
| | - Stephen Badylak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, United States
| | - George Hussey
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, United States
| | - Jonathan Flax
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14627, United States
- Department of Urology, University of Rochester Medical Center, Rochester, NY 14642, United States
| | - James L. McGrath
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14627, United States
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2
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Moyer J, Wilson MW, Sorrentino TA, Santandreu A, Chen C, Hu D, Kerdok A, Porock E, Wright N, Ly J, Blaha C, Frassetto LA, Fissell WH, Vartanian SM, Roy S. Renal Embolization-Induced Uremic Swine Model for Assessment of Next-Generation Implantable Hemodialyzers. Toxins (Basel) 2023; 15:547. [PMID: 37755973 PMCID: PMC10536310 DOI: 10.3390/toxins15090547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/22/2023] [Accepted: 08/30/2023] [Indexed: 09/28/2023] Open
Abstract
Reliable models of renal failure in large animals are critical to the successful translation of the next generation of renal replacement therapies (RRT) into humans. While models exist for the induction of renal failure, none are optimized for the implantation of devices to the retroperitoneal vasculature. We successfully piloted an embolization-to-implantation protocol enabling the first implant of a silicon nanopore membrane hemodialyzer (SNMHD) in a swine renal failure model. Renal arterial embolization is a non-invasive approach to near-total nephrectomy that preserves retroperitoneal anatomy for device implants. Silicon nanopore membranes (SNM) are efficient blood-compatible membranes that enable novel approaches to RRT. Yucatan minipigs underwent staged bilateral renal arterial embolization to induce renal failure, managed by intermittent hemodialysis. A small-scale arteriovenous SNMHD prototype was implanted into the retroperitoneum. Dialysate catheters were tunneled externally for connection to a dialysate recirculation pump. SNMHD clearance was determined by intermittent sampling of recirculating dialysate. Creatinine and urea clearance through the SNMHD were 76-105 mL/min/m2 and 140-165 mL/min/m2, respectively, without albumin leakage. Normalized creatinine and urea clearance measured in the SNMHD may translate to a fully implantable clinical-scale device. This pilot study establishes a path toward therapeutic testing of the clinical-scale SNMHD and other implantable RRT devices.
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Affiliation(s)
- Jarrett Moyer
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
- Silicon Kidney, San Ramon, CA 94583, USA
| | - Mark W. Wilson
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - Thomas A. Sorrentino
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - Ana Santandreu
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - Caressa Chen
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - Dean Hu
- Outset Medical, San Jose, CA 95134, USA
| | | | - Edward Porock
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - Nathan Wright
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
- Silicon Kidney, San Ramon, CA 94583, USA
| | - Jimmy Ly
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
- Silicon Kidney, San Ramon, CA 94583, USA
| | - Charles Blaha
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
- Silicon Kidney, San Ramon, CA 94583, USA
| | - Lynda A. Frassetto
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - William H. Fissell
- Silicon Kidney, San Ramon, CA 94583, USA
- Division of Nephrology & Hypertension, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Shant M. Vartanian
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
| | - Shuvo Roy
- Departments of Bioengineering & Therapeutic Sciences, Surgery, Medicine, and Radiology & Biomedical Imaging, University of California, San Francisco, CA 94143, USA; (J.M.)
- Silicon Kidney, San Ramon, CA 94583, USA
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3
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Huang SH, Parandhaman M, Farnia S, Kim J, Amemiya S. Nanoelectrochemistry at liquid/liquid interfaces for analytical, biological, and material applications. Chem Commun (Camb) 2023; 59:9575-9590. [PMID: 37458703 PMCID: PMC10416082 DOI: 10.1039/d3cc01982a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Herein, we feature our recent efforts toward the development and application of nanoelectrochemistry at liquid/liquid interfaces, which are also known as interfaces between two immiscible electrolyte solutions (ITIES). Nanopipets, nanopores, and nanoemulsions are developed to create the nanoscale ITIES for the quantitative electrochemical measurement of ion transfer, electron transfer, and molecular transport across the interface. The nanoscale ITIES serves as an electrochemical nanosensor to enable the selective detection of various ions and molecules as well as high-resolution chemical imaging based on scanning electrochemical microscopy. The powerful nanoelectroanalytical methods will be useful for biological and material applications as illustrated by in situ studies of solid-state nanopores, nuclear pore complexes, living bacteria, and advanced nanoemulsions. These studies provide unprecedented insights into the chemical reactivity of important biological and material systems even at the single nanostructure level.
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Affiliation(s)
- Siao-Han Huang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
| | | | - Solaleh Farnia
- Department of Chemistry, University of Rhode Island, Kingston, RI, 02881, USA.
| | - Jiyeon Kim
- Department of Chemistry, University of Rhode Island, Kingston, RI, 02881, USA.
| | - Shigeru Amemiya
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
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Shargh AK, Abdolrahim N. An interpretable deep learning approach for designing nanoporous silicon nitride membranes with tunable mechanical properties. NPJ COMPUTATIONAL MATERIALS 2023; 9:82. [PMID: 37273663 PMCID: PMC10221757 DOI: 10.1038/s41524-023-01037-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 05/07/2023] [Indexed: 06/06/2023]
Abstract
The high permeability and strong selectivity of nanoporous silicon nitride (NPN) membranes make them attractive in a broad range of applications. Despite their growing use, the strength of NPN membranes needs to be improved for further extending their biomedical applications. In this work, we implement a deep learning framework to design NPN membranes with improved or prescribed strength values. We examine the predictions of our framework using physics-based simulations. Our results confirm that the proposed framework is not only able to predict the strength of NPN membranes with a wide range of microstructures, but also can design NPN membranes with prescribed or improved strength. Our simulations further demonstrate that the microstructural heterogeneity that our framework suggests for the optimized design, lowers the stress concentration around the pores and leads to the strength improvement of NPN membranes as compared to conventional membranes with homogenous microstructures.
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Affiliation(s)
- Ali K. Shargh
- Department of Mechanical Engineering, University of Rochester, Rochester, NY 14627 USA
| | - Niaz Abdolrahim
- Department of Mechanical Engineering, University of Rochester, Rochester, NY 14627 USA
- Materials Science program, University of Rochester, Rochester, NY 14627 USA
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14627 USA
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5
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Advances in cell coculture membranes recapitulating in vivo microenvironments. Trends Biotechnol 2023; 41:214-227. [PMID: 36030108 DOI: 10.1016/j.tibtech.2022.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/05/2022] [Accepted: 07/25/2022] [Indexed: 01/24/2023]
Abstract
Porous membranes play a critical role in in vitro heterogeneous cell coculture systems because they recapitulate the in vivo microenvironment to mediate physical and biochemical crosstalk between cells. While the conventionally available Transwell® system has been widely used for heterogeneous cell coculture, there are drawbacks to precise control over cell-cell interactions and separation for implantation. The size and numbers of the pores and the thickness of the porous membranes are crucial in determining the efficiency of paracrine signaling and direct junctions between cocultured cells, and significantly impact on the performance of heterogeneous cell cultures. These opportunities and challenges have motivated the design of advanced coculture platforms through improvement of the structural and functional properties of porous membranes.
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Tonev DG, Momchilova AB. Therapeutic Plasma Exchange in Certain Immune-Mediated Neurological Disorders: Focus on a Novel Nanomembrane-Based Technology. Biomedicines 2023; 11:biomedicines11020328. [PMID: 36830870 PMCID: PMC9953422 DOI: 10.3390/biomedicines11020328] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/26/2023] Open
Abstract
Therapeutic plasma exchange (TPE) is an efficient extracorporeal blood purification technique to remove circulating autoantibodies and other pathogenic substances. Its mechanism of action in immune-mediated neurological disorders includes immediate intravascular reduction of autoantibody concentration, pulsed induction of antibody redistribution, and subsequent immunomodulatory changes. Conventional TPE with 1 to 1.5 total plasma volume (TPV) exchange is a well-established treatment in Guillain-Barre Syndrome, Chronic Inflammatory Demyelinating Polyradiculoneuropathy, Neuromyelitis Optica Spectrum Disorder, Myasthenia Gravis and Multiple Sclerosis. There is insufficient evidence for the efficacy of so-called low volume plasma exchange (LVPE) (<1 TPV exchange) implemented either by the conventional or by a novel nanomembrane-based TPE in these neurological conditions, including their impact on conductivity and neuroregenerative recovery. In this narrative review, we focus on the role of nanomembrane-based technology as an alternative LVPE treatment option in these neurological conditions. Nanomembrane-based technology is a promising type of TPE, which seems to share the basic advantages of the conventional one, but probably with fewer adverse effects. It could play a valuable role in patient management by ameliorating neurological symptoms, improving disability, and reducing oxidative stress in a cost-effective way. Further research is needed to identify which patients benefit most from this novel TPE technology.
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Affiliation(s)
- Dimitar G. Tonev
- Department of Anesthesiology and Intensive Care, Medical University of Sofia, University Hospital “Tzaritza Yoanna—ISUL”, 1527 Sofia, Bulgaria
- Correspondence:
| | - Albena B. Momchilova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Science, 1113 Sofia, Bulgaria
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Masereeuw R. The Dual Roles of Protein-Bound Solutes as Toxins and Signaling Molecules in Uremia. Toxins (Basel) 2022; 14:toxins14060402. [PMID: 35737063 PMCID: PMC9230939 DOI: 10.3390/toxins14060402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/24/2022] [Accepted: 06/10/2022] [Indexed: 01/25/2023] Open
Abstract
In patients with severe kidney disease, renal clearance is compromised, resulting in the accumulation of a plethora of endogenous waste molecules that cannot be removed by current dialysis techniques, the most often applied treatment. These uremic retention solutes, also named uremic toxins, are a heterogeneous group of organic compounds of which many are too large to be filtered and/or are protein-bound. Their renal excretion depends largely on renal tubular secretion, by which the binding is shifted towards the free fraction that can be eliminated. To facilitate this process, kidney proximal tubule cells are equipped with a range of transport proteins that cooperate in cellular uptake and urinary excretion. In recent years, innovations in dialysis techniques to advance uremic toxin removal, as well as treatments with drugs and/or dietary supplements that limit uremic toxin production, have provided some clinical improvements or are still in progress. This review gives an overview of these developments. Furthermore, the role protein-bound uremic toxins play in inter-organ communication, in particular between the gut (the side where toxins are produced) and the kidney (the side of their removal), is discussed.
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Affiliation(s)
- Rosalinde Masereeuw
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
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8
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Lucas K, Dehghani M, Khire T, Gaborski T, Flax JD, Waugh RE, McGrath JL. A predictive model of nanoparticle capture on ultrathin nanoporous membranes. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Dang BV, Charlton AJ, Li Q, Kim YC, Taylor RA, Le-Clech P, Barber T. Can 3D-printed spacers improve filtration at the microscale? Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117776] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Ghosh A, Vallam Thodi F, Sengupta S, Kannan S, Krishnan L, Bhattacharya E. Effective clearance of uremic toxins using functionalised silicon Nanoporous membranes. Biomed Microdevices 2021; 23:4. [PMID: 33415531 DOI: 10.1007/s10544-020-00539-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2020] [Indexed: 12/24/2022]
Abstract
In-house fabricated silicon nanoporous membranes (SNMs), functionalized for efficient clearance of uremic toxins, can lead to compact and portable dialysis systems. Efficacy of 15 nm thick SNMs, with average pore diameter of 8 nm, was tested for dialysis of two uremic toxins - urea and creatinine using custom made teflon apparatus of 2, 10 and 30 ml. The apparatus consisted of two reservoirs, with the cis containing the uremic fluid, and the trans containing the dialysate. Peristalsis was found to enhance the clearance rate by a factor of four as compared to unstirred condition. Functionalisation of the SNMs reduced protein binding, and surface binding of urea from 23% to negligible values. A lateral array of nine SNMs and a new design for the dialysis apparatus, increased the clearance rate by a factor of twelve from that of the single SNM. The arrays cleared about 42% of urea and 48% of creatinine from 30 ml of diluted serum samples, in 15 min. Periodic replacement of the trans fluid cleared about 81% of high concentration uremic toxins from the cis reservoir in 45 mins. The SNM arrays are stable, reproducible, and with the superior clearance rates for urea and creatinine, they have the potential to be used as membranes for portable hemodialysers.
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Affiliation(s)
- Ananya Ghosh
- Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Fidal Vallam Thodi
- Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Sudeshna Sengupta
- Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Sivasundari Kannan
- Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Lalitha Krishnan
- Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Enakshi Bhattacharya
- Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai, 600036, India. .,Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India.
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Affiliation(s)
- Rosalinde Masereeuw
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht, The Netherlands.
| | - Marianne C Verhaar
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
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12
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Lucas K, Ahmad SD, Dehghani M, Gaborski T, McGrath J. Critical flux behavior of ultrathin membranes in protein-rich solutions. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117342] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Oxone ®-Mediated TEMPO-Oxidized Cellulose Nanomaterial Ultrafiltration and Dialysis Mixed-Matrix Hollow Fiber Membranes. Polymers (Basel) 2020; 12:polym12061348. [PMID: 32549325 PMCID: PMC7361684 DOI: 10.3390/polym12061348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 01/31/2023] Open
Abstract
Recent exploration of cellulose nanomaterials has resulted in the creation of Oxone®-Mediated TEMPO-Oxidized Cellulose Nanomaterials (OTO-CNMs). These materials, when incorporated into a polymer matrix, have properties showing increased flux, decreased membrane resistance, and improved clearance, making them an ideal material for dialysis. This study is the first to focus on the implementation of OTO-CNMs into hollow fiber membranes and a comparison of these membranes for ultrafiltration and dialysis. Ultrafiltration and dialysis were performed using bovine serum albumin (BSA), lysozyme, and urea to analyze various properties of each hollow fiber membrane type. The results presented in this study provide the first quantitative evaluation of the clearance and sieving characteristics of Oxone®-Mediated TEMPO-Oxidized Cellulose-Nanomaterial-doped cellulose triacetate mixed-matrix hemodialyzers. While the cellulose nanomaterials increased flux (10–30%) in ultrafiltration mode, this was offset by increased removal of albumin. However, in dialysis mode, these materials drastically increased the mass transfer of components (50–100%), which could lead to significantly lower dialysis times for patients. This change in the performance between the two different modes is most likely due to the increased porosity of the cellulose nanomaterials.
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Miller JJ, Carter JA, Hill K, DesOrmeaux JPS, Carter RN, Gaborski TR, Roussie JA, McGrath JL, Johnson DG. Free Standing, Large-Area Silicon Nitride Membranes for High Toxin Clearance in Blood Surrogate for Small-Format Hemodialysis. MEMBRANES 2020; 10:membranes10060119. [PMID: 32517263 PMCID: PMC7344517 DOI: 10.3390/membranes10060119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/04/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
Developing highly-efficient membranes for toxin clearance in small-format hemodialysis presents a fabrication challenge. The miniaturization of fluidics and controls has been the focus of current work on hemodialysis (HD) devices. This approach has not addressed the membrane efficiency needed for toxin clearance in small-format hemodialysis devices. Dr. Willem Kolff built the first dialyzer in 1943 and many changes have been made to HD technology since then. However, conventional HD still uses large instruments with bulky dialysis cartridges made of ~2 m2 of 10 micron thick, tortuous-path membrane material. Portable, wearable, and implantable HD systems may improve clinical outcomes for patients with end-stage renal disease by increasing the frequency of dialysis. The ability of ultrathin silicon-based sheet membranes to clear toxins is tested along with an analytical model predicting long-term multi-pass experiments from single-pass clearance experiments. Advanced fabrication methods are introduced that produce a new type of nanoporous silicon nitride sheet membrane that features the pore sizes needed for middle-weight toxin removal. Benchtop clearance results with sheet membranes (~3 cm2) match a theoretical model and indicate that sheet membranes can reduce (by orders of magnitude) the amount of membrane material required for hemodialysis. This provides the performance needed for small-format hemodialysis.
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Affiliation(s)
- Joshua J. Miller
- SiMPore, Inc. 150 Lucius Gordon Drive, Suite 110, West Henrietta, NY 14586, USA; (J.J.M.); (J.A.C.); (J.-P.S.D.); (J.A.R.)
| | - Jared A. Carter
- SiMPore, Inc. 150 Lucius Gordon Drive, Suite 110, West Henrietta, NY 14586, USA; (J.J.M.); (J.A.C.); (J.-P.S.D.); (J.A.R.)
| | - Kayli Hill
- Biomedical Engineering Department, University of Rochester, Rochester, NY 14627, USA; (K.H.); (J.L.M.)
| | - Jon-Paul S. DesOrmeaux
- SiMPore, Inc. 150 Lucius Gordon Drive, Suite 110, West Henrietta, NY 14586, USA; (J.J.M.); (J.A.C.); (J.-P.S.D.); (J.A.R.)
| | - Robert N. Carter
- Mechanical Engineering Department, Rochester Institute of Technology, Rochester, NY 14623, USA;
| | - Thomas R. Gaborski
- Biomedical Engineering Department, Rochester Institute of Technology, Rochester, NY 14623, USA;
| | - James A. Roussie
- SiMPore, Inc. 150 Lucius Gordon Drive, Suite 110, West Henrietta, NY 14586, USA; (J.J.M.); (J.A.C.); (J.-P.S.D.); (J.A.R.)
| | - James L. McGrath
- Biomedical Engineering Department, University of Rochester, Rochester, NY 14627, USA; (K.H.); (J.L.M.)
| | - Dean G. Johnson
- Biomedical Engineering Department, University of Rochester, Rochester, NY 14627, USA; (K.H.); (J.L.M.)
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Jakšić Z, Jakšić O. Biomimetic Nanomembranes: An Overview. Biomimetics (Basel) 2020; 5:E24. [PMID: 32485897 PMCID: PMC7345464 DOI: 10.3390/biomimetics5020024] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 11/30/2022] Open
Abstract
Nanomembranes are the principal building block of basically all living organisms, and without them life as we know it would not be possible. Yet in spite of their ubiquity, for a long time their artificial counterparts have mostly been overlooked in mainstream microsystem and nanosystem technologies, being a niche topic at best, instead of holding their rightful position as one of the basic structures in such systems. Synthetic biomimetic nanomembranes are essential in a vast number of seemingly disparate fields, including separation science and technology, sensing technology, environmental protection, renewable energy, process industry, life sciences and biomedicine. In this study, we review the possibilities for the synthesis of inorganic, organic and hybrid nanomembranes mimicking and in some way surpassing living structures, consider their main properties of interest, give a short overview of possible pathways for their enhancement through multifunctionalization, and summarize some of their numerous applications reported to date, with a focus on recent findings. It is our aim to stress the role of functionalized synthetic biomimetic nanomembranes within the context of modern nanoscience and nanotechnologies. We hope to highlight the importance of the topic, as well as to stress its great applicability potentials in many facets of human life.
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Affiliation(s)
- Zoran Jakšić
- Center of Microelectronic Technologies, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia;
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