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Singh A, Maker M, Prakash J, Tandon R, Mitchell CS. What Threshold of Amyloid Reduction Is Necessary to Meaningfully Improve Cognitive Function in Transgenic Alzheimer's Disease Mice? J Alzheimers Dis Rep 2024; 8:371-385. [PMID: 38549638 PMCID: PMC10977462 DOI: 10.3233/adr-230174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/25/2024] [Indexed: 04/18/2024] Open
Abstract
Background Amyloid-β plaques (Aβ) are associated with Alzheimer's disease (AD). Pooled assessment of amyloid reduction in transgenic AD mice is critical for expediting anti-amyloid AD therapeutic research. Objective The mean threshold of Aβ reduction necessary to achieve cognitive improvement was measured via pooled assessment (n = 594 mice) of Morris water maze (MWM) escape latency of transgenic AD mice treated with substances intended to reduce Aβ via reduction of beta-secretase cleaving enzyme (BACE). Methods Machine learning and statistical methods identified necessary amyloid reduction levels using mouse data (e.g., APP/PS1, LPS, Tg2576, 3xTg-AD, control, wild type, treated, untreated) curated from 22 published studies. Results K-means clustering identified 4 clusters that primarily corresponded with level of Aβ: untreated transgenic AD control mice, wild type mice, and two clusters of transgenic AD mice treated with BACE inhibitors that had either an average 25% "medium reduction" of Aβ or 50% "high reduction" of Aβ compared to untreated control. A 25% Aβ reduction achieved a 28% cognitive improvement, and a 50% Aβ reduction resulted in a significant 32% improvement compared to untreated transgenic mice (p < 0.05). Comparatively, wild type mice had a mean 41% MWM latency improvement over untreated transgenic mice (p < 0.05). BACE reduction had a lesser impact on the ratio of Aβ42 to Aβ40. Supervised learning with an 80% -20% train-test split confirmed Aβ reduction was a key feature for predicting MWM escape latency (R2 = 0.8 to 0.95). Conclusions Results suggest a 25% reduction in Aβ as a meaningful treatment threshold for improving transgenic AD mouse cognition.
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Affiliation(s)
- Anita Singh
- Department of Biomedical Engineering, Laboratory for Pathology Dynamics, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Matthew Maker
- Department of Biomedical Engineering, Laboratory for Pathology Dynamics, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Jayant Prakash
- Department of Biomedical Engineering, Laboratory for Pathology Dynamics, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Raghav Tandon
- Department of Biomedical Engineering, Laboratory for Pathology Dynamics, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Cassie S. Mitchell
- Department of Biomedical Engineering, Laboratory for Pathology Dynamics, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
- Center for Machine Learning at Georgia Tech, Georgia Institute of Technology, Atlanta, GA, USA
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Chehrehgosha M, Khoshnevisan K, Maleki H, Baharifar H, Meftah AM, Sajjadi-Jazi SM, Sharifi F. A systematic study of nano-based fibrous systems: Diagnostic and therapeutic approaches for dementia control. Ageing Res Rev 2023; 85:101853. [PMID: 36642189 DOI: 10.1016/j.arr.2023.101853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/07/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
Nano-based systems provide many advantages, including eluding gastrointestinal and first-pass metabolism of the drug and improving the potential advantage of reduced doses of drugs for an equal or better therapeutic effect compared to other parts of oral administration. Over the last few years, protein-based nanofibrous biomaterials have been used for better controlling dementia. PubMed, Scopus, and ISI Web of Science were consulted for available articles on nano-based fibrous systems for the treatment and diagnosis of dementia (up to October 2022). Of 725 articles that were identified and evaluated, only 19 were included. Eleven studies evaluated nanofibrous electrospun biomaterials for better dementia control. Among these, four investigated marker/biomarker detection for the early diagnosis of dementia. Two from four studies conducted hydrogel-based nanofibrous for Alzheimer's disease (AD) treatment. Additionally, four studies inspected stem cell (SC) transplantation on nano-based fibrous scaffolds for better treatment of dementia. Finally, two from the final four studies considered nano-based fibrous systems for the enhanced treatment of dementia. Our study concluded that nano-based fibrous platforms, exclusively peptide/protein-based nanofibrous scaffolds made from biomaterials, can be applied for dementia management by either diagnostic or therapeutic approaches specific in purpose-designed electrospun nanofibrous scaffolds.
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Affiliation(s)
- Maryam Chehrehgosha
- Elderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, 1411713137, Iran; Department of Surgical Technology, Paramedical School, Golestan University of Medical Sciences, Gorgan, 4934174515, Iran
| | - Kamyar Khoshnevisan
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran, Iran.
| | - Hassan Maleki
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran, Iran; Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hadi Baharifar
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran, Iran; Department of Medical Nanotechnology, Applied Biophotonics Research Center, Science and Research Branch, Islamic Azad University, Tehran, 1477893855, Iran
| | | | - Sayed Mahmoud Sajjadi-Jazi
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran, Iran; Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, 1411713137, Iran
| | - Farshad Sharifi
- Elderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, 1411713137, Iran; Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran, Iran
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Healy BD, Budy P, Conner MM, Omana Smith EC. Life and death in a dynamic environment: Invasive trout, floods, and intraspecific drivers of translocated populations. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2022. [PMID: 35403769 DOI: 10.6084/m9.figshare.c.5805593.v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Understanding the relative strengths of intrinsic and extrinsic factors regulating populations is a long-standing focus of ecology and critical to advancing conservation programs for imperiled species. Conservation could benefit from an increased understanding of factors influencing vital rates (somatic growth, recruitment, survival) in small, translocated populations, which is lacking owing to difficulties in long-term monitoring of rare species. Translocations, here defined as the transfer of wild-captured individuals from source populations to new habitats, are widely used for species conservation, but outcomes are often minimally monitored, and translocations that are monitored often fail. To improve our understanding of how translocated populations respond to environmental variation, we developed and tested hypotheses related to intrinsic (density dependent) and extrinsic (introduced rainbow trout Oncorhynchus mykiss, stream flow and temperature regime) causes of vital rate variation in endangered humpback chub (Gila cypha) populations translocated to Colorado River tributaries in the Grand Canyon (GC), USA. Using biannual recapture data from translocated populations over 10 years, we tested hypotheses related to seasonal somatic growth, and recruitment and population growth rates with linear mixed-effects models and temporal symmetry mark-recapture models. We combined data from recaptures and resights of dispersed fish (both physical captures and continuously recorded antenna detections) from throughout GC to test survival hypotheses, while accounting for site fidelity, using joint live-recapture/live-resight models. While recruitment only occurred in one site, which also drove population growth (relative to survival), evidence supported hypotheses related to density dependence in growth, survival, and recruitment, and somatic growth and recruitment were further limited by introduced trout. Mixed-effects models explained between 67% and 86% of the variation in somatic growth, which showed increased growth rates with greater flood-pulse frequency during monsoon season. Monthly survival was 0.56-0.99 and 0.80-0.99 in the two populations, with lower survival during periods of higher intraspecific abundance and low flood frequency. Our results suggest translocations can contribute toward the recovery of large-river fishes, but continued suppression of invasive fishes to enhance recruitment may be required to ensure population resilience. Furthermore, we demonstrate the importance of flooding to population demographics in food-depauperate, dynamic, invaded systems.
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Affiliation(s)
- Brian D Healy
- Department of Watershed Sciences and the Ecology Center, Utah State University, Logan, Utah, USA
- Native Fish Ecology and Conservation Program, Division of Science and Resource Management, Grand Canyon National Park, National Park Service, Flagstaff, Arizona, USA
| | - Phaedra Budy
- Department of Watershed Sciences and the Ecology Center, Utah State University, Logan, Utah, USA
- United States Geological Survey, Utah Cooperative Fish and Wildlife Research Unit, Department of Watershed Sciences, Utah State University, Logan, Utah, USA
| | - Mary M Conner
- Department of Wildland Resources and the Ecology Center, Utah State University, Logan, Utah, USA
| | - Emily C Omana Smith
- Native Fish Ecology and Conservation Program, Division of Science and Resource Management, Grand Canyon National Park, National Park Service, Flagstaff, Arizona, USA
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Healy BD, Budy P, Conner MM, Omana Smith EC. Life and death in a dynamic environment: Invasive trout, floods, and intraspecific drivers of translocated populations. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2022; 32:e2635. [PMID: 35403769 PMCID: PMC9541007 DOI: 10.1002/eap.2635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 01/25/2022] [Accepted: 02/24/2022] [Indexed: 05/14/2023]
Abstract
Understanding the relative strengths of intrinsic and extrinsic factors regulating populations is a long-standing focus of ecology and critical to advancing conservation programs for imperiled species. Conservation could benefit from an increased understanding of factors influencing vital rates (somatic growth, recruitment, survival) in small, translocated populations, which is lacking owing to difficulties in long-term monitoring of rare species. Translocations, here defined as the transfer of wild-captured individuals from source populations to new habitats, are widely used for species conservation, but outcomes are often minimally monitored, and translocations that are monitored often fail. To improve our understanding of how translocated populations respond to environmental variation, we developed and tested hypotheses related to intrinsic (density dependent) and extrinsic (introduced rainbow trout Oncorhynchus mykiss, stream flow and temperature regime) causes of vital rate variation in endangered humpback chub (Gila cypha) populations translocated to Colorado River tributaries in the Grand Canyon (GC), USA. Using biannual recapture data from translocated populations over 10 years, we tested hypotheses related to seasonal somatic growth, and recruitment and population growth rates with linear mixed-effects models and temporal symmetry mark-recapture models. We combined data from recaptures and resights of dispersed fish (both physical captures and continuously recorded antenna detections) from throughout GC to test survival hypotheses, while accounting for site fidelity, using joint live-recapture/live-resight models. While recruitment only occurred in one site, which also drove population growth (relative to survival), evidence supported hypotheses related to density dependence in growth, survival, and recruitment, and somatic growth and recruitment were further limited by introduced trout. Mixed-effects models explained between 67% and 86% of the variation in somatic growth, which showed increased growth rates with greater flood-pulse frequency during monsoon season. Monthly survival was 0.56-0.99 and 0.80-0.99 in the two populations, with lower survival during periods of higher intraspecific abundance and low flood frequency. Our results suggest translocations can contribute toward the recovery of large-river fishes, but continued suppression of invasive fishes to enhance recruitment may be required to ensure population resilience. Furthermore, we demonstrate the importance of flooding to population demographics in food-depauperate, dynamic, invaded systems.
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Affiliation(s)
- Brian D. Healy
- Department of Watershed Sciences and the Ecology CenterUtah State UniversityLoganUtahUSA
- Native Fish Ecology and Conservation Program, Division of Science and Resource ManagementGrand Canyon National Park, National Park ServiceFlagstaffArizonaUSA
| | - Phaedra Budy
- Department of Watershed Sciences and the Ecology CenterUtah State UniversityLoganUtahUSA
- United States Geological Survey, Utah Cooperative Fish and Wildlife Research Unit, Department of Watershed SciencesUtah State UniversityLoganUtahUSA
| | - Mary M. Conner
- Department of Wildland Resources and the Ecology CenterUtah State UniversityLoganUtahUSA
| | - Emily C. Omana Smith
- Native Fish Ecology and Conservation Program, Division of Science and Resource ManagementGrand Canyon National Park, National Park ServiceFlagstaffArizonaUSA
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Boosted Cross-Linking and Characterization of High-Performing Self-Assembling Peptides. NANOMATERIALS 2022; 12:nano12030320. [PMID: 35159664 PMCID: PMC8838902 DOI: 10.3390/nano12030320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/14/2022] [Accepted: 01/16/2022] [Indexed: 12/10/2022]
Abstract
Tissue engineering (TE) strategies require the design and characterization of novel biomaterials capable of mimicking the physiological microenvironments of the tissues to be regenerated. As such, implantable materials should be biomimetic, nanostructured and with mechanical properties approximating those of the target organ/tissue. Self-assembling peptides (SAPs) are biomimetic nanomaterials that can be readily synthesized and customized to match the requirements of some TE applications, but the weak interactions involved in the self-assembling phenomenon make them soft hydrogels unsuited for the regeneration of medium-to-hard tissues. In this work, we moved significant steps forward in the field of chemical cross-linked SAPs towards the goal of stiff peptidic materials suited for the regeneration of several tissues. Novel SAPs were designed and characterized to boost the 4-(N-Maleimidomethyl) cyclohexane-1-carboxylic acid 3-sulpho-N-hydroxysuccinimide ester (Sulfo-SMCC) mediated cross-linking reaction, where they reached G′ values of ~500 kPa. An additional orthogonal cross-linking was also effective and allowed to top remarkable G′ values of 840 kPa. We demonstrated that cross-linking fastened the pre-existing self-aggregated nanostructures, and at the same time, a strong presence of ß-structures is necessary for an effective cross-linking of (LKLK)3-based SAPs. Combining strong SAP design and orthogonal cross-linking reactions, we brought SAP stiffness closer to the MPa threshold, and as such, we opened the door of the regeneration of skin, muscle and lung to biomimetic SAP technology.
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Alipour M, Nabavi SM, Arab L, Vosough M, Pakdaman H, Ehsani E, Shahpasand K. Stem cell therapy in Alzheimer's disease: possible benefits and limiting drawbacks. Mol Biol Rep 2018; 46:1425-1446. [PMID: 30565076 DOI: 10.1007/s11033-018-4499-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 11/13/2018] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) is the sixth leading cause of death globally and the main reason for dementia in elderly people. AD is a long-term and progressive neurodegenerative disorder that steadily worsens memory and communicating skills eventually leads to a disabled person of performing simple daily tasks. Unfortunately, numerous clinical trials exploring new therapeutic drugs have encountered disappointing outcomes in terms of improved cognitive performance since they are not capable of halting or stimulating the regeneration of already-damaged neural cells, and merely provide symptomatic relief. Therefore, a deeper understanding of the mechanism of action of stem cell may contribute to the development of novel and effective therapies. The revolutionary discovery of stem cells has cast a new hope for the development of disease-modifying treatments for AD, in terms of their potency in the replenishment of lost cells via differentiating towards specific lineages, stimulating in situ neurogenesis, and delivering the therapeutic agents to the brain. Herein, firstly, we explore the pathophysiology of AD. Next, we summarize the most recent preclinical stem cell reports designed for AD treatment, their benefits and outcomes according to cell type. We briefly review relevant clinical trials and their potential clinical applications in order to find a unique solution to effectively relieve the patients' pain.
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Affiliation(s)
- Masoume Alipour
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran
| | - Seyed Massood Nabavi
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran
| | - Leila Arab
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran
| | - Massoud Vosough
- Department of Stem Cells and Developmental Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Hossein Pakdaman
- Department of Neurology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Ehsani
- Department of Biology, Roudehen Branch, Islamic Azad University, Roudehen, Iran
| | - Koorosh Shahpasand
- Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Banihashem Sq., Banihashem St., Resalat highway, P.O. Box 19395-4644, Tehran, Iran.
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Wang C, Tan R, Wang Q. One-step synthesized flower-like materials used for sensitively detecting amyloid precursor protein. Anal Bioanal Chem 2018; 410:6901-6909. [DOI: 10.1007/s00216-018-1293-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/20/2018] [Accepted: 07/24/2018] [Indexed: 11/29/2022]
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Fontana G, Delgado LM, Cigognini D. Biologically Inspired Materials in Tissue Engineering. EXTRACELLULAR MATRIX FOR TISSUE ENGINEERING AND BIOMATERIALS 2018. [DOI: 10.1007/978-3-319-77023-9_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Salles GN, Pereira FADS, Pacheco-Soares C, Marciano FR, Hölscher C, Webster TJ, Lobo AO. A Novel Bioresorbable Device as a Controlled Release System for Protecting Cells from Oxidative Stress from Alzheimer’s Disease. Mol Neurobiol 2016; 54:6827-6838. [DOI: 10.1007/s12035-016-0200-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 10/11/2016] [Indexed: 12/15/2022]
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Pugliese R, Gelain F. Peptidic Biomaterials: From Self-Assembling to Regenerative Medicine. Trends Biotechnol 2016; 35:145-158. [PMID: 27717599 DOI: 10.1016/j.tibtech.2016.09.004] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 09/07/2016] [Accepted: 09/13/2016] [Indexed: 11/29/2022]
Abstract
Peptidic biomaterials represent a particularly exciting topic in regenerative medicine. Peptidic scaffolds can be specifically designed for biomimetic customization for targeted therapy. The field is at a pivotal point where preclinical research is being translated into clinics, so it is crucial to understand the theory and describe the status of this rapidly developing technology. In this review, we highlight major advantages and current limitations of self-assembling peptide-based biomaterials, and we discuss the most widely used classes of assembling peptides, describing recent and promising approaches in tissue engineering, drug delivery, and clinics. We also suggest design strategies and hurdles that still need to be overcome to fully exploit their therapeutic potential.
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Affiliation(s)
- Raffaele Pugliese
- IRCCS Casa Sollievo della Sofferenza, Opera di San Pio da Pietrelcina, Viale Cappuccini, 1, 71013 San Giovanni Rotondo (FG), Italy
| | - Fabrizio Gelain
- IRCCS Casa Sollievo della Sofferenza, Opera di San Pio da Pietrelcina, Viale Cappuccini, 1, 71013 San Giovanni Rotondo (FG), Italy; Center for Nanomedicine and Tissue Engineering (CNTE), A. O. Ospedale Niguarda Cà Granda, Piazza dell' Ospedale Maggiore 3, 20162 Milan, Italy.
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Tatman PD, Muhonen EG, Wickers ST, Gee AO, Kim ES, Kim DH. Self-assembling peptides for stem cell and tissue engineering. Biomater Sci 2016; 4:543-54. [PMID: 26878078 PMCID: PMC4803621 DOI: 10.1039/c5bm00550g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Regenerative medicine holds great potential to address many shortcomings in current medical therapies. An emerging avenue of regenerative medicine is the use of self-assembling peptides (SAP) in conjunction with stem cells to improve the repair of damaged tissues. The specific peptide sequence, mechanical properties, and nanotopographical cues vary widely between different SAPs, many of which have been used for the regeneration of similar tissues. To evaluate the potential of SAPs to guide stem cell fate, we extensively reviewed the literature for reports of SAPs and stem cell differentiation. To portray the most accurate summary of these studies, we deliberately discuss both the successes and pitfalls, allowing us to make conclusions that span the breadth of this exciting field. We also expand on these conclusions by relating these findings to the fields of nanotopography, mechanotransduction, and the native composition of the extracellular matrix in specific tissues to identify potential directions for future research.
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Affiliation(s)
- Philip D Tatman
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Medical Scientist Training Program, University of Colorado, Aurora, Colorado, USA
| | - Ethan G Muhonen
- School of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Sean T. Wickers
- Department of Chemistry, University of Colorado, Denver, Colorado, USA
| | - Albert O. Gee
- Department of Orthopedics and Sports Medicine, University of Washington, Seattle, WA 98195, USA
| | - Eung-Sam Kim
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Department of Biological Sciences, Chonnam National University, Gwangju, Korea
| | - Deok-Ho Kim
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Institute of Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
- Center for Cardiovascular Biology, University of Washington, Seattle, WA 98109, USA
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