1
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Smith CS, Álvarez Z, Qiu R, Sasselli IR, Clemons T, Ortega JA, Vilela-Picos M, Wellman H, Kiskinis E, Stupp SI. Enhanced Neuron Growth and Electrical Activity by a Supramolecular Netrin-1 Mimetic Nanofiber. ACS Nano 2023; 17:19887-19902. [PMID: 37793046 DOI: 10.1021/acsnano.3c04572] [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] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Neurotrophic factors are essential not only for guiding the organization of the developing nervous system but also for supporting the survival and growth of neurons after traumatic injury. In the central nervous system (CNS), inhibitory factors and the formation of a glial scar after injury hinder the functional recovery of neurons, requiring exogenous therapies to promote regeneration. Netrin-1, a neurotrophic factor, can initiate axon guidance, outgrowth, and branching, as well as synaptogenesis, through activation of deleted in colorectal cancer (DCC) receptors. We report here the development of a nanofiber-shaped supramolecular mimetic of netrin-1 with monomers that incorporate a cyclic peptide sequence as the bioactive component. The mimetic structure was found to activate the DCC receptor in primary cortical neurons using low molar ratios of the bioactive comonomer. The supramolecular nanofibers enhanced neurite outgrowth and upregulated maturation as well as pre- and postsynaptic markers over time, resulting in differences in electrical activity similar to neurons treated with the recombinant netrin-1 protein. The results suggest the possibility of using the supramolecular structure as a therapeutic to promote regenerative bioactivity in CNS injuries.
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Affiliation(s)
- Cara S Smith
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Biomaterials for Neural Regeneration, Institute for Bioengineering of Catalonia (IBEC), Barcelona 08028, Spain
| | - Ruomeng Qiu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Ivan R Sasselli
- Centro de Fisica de Materiales (CFM), CSIC-UPV/EHU, San Sebastián 20018, Spain
| | - Tristan Clemons
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - J Alberto Ortega
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- The Ken & Ruth Davee Department of Neurology, Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Department of Pathology and Experimental Therapeutics, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Barcelona 08907, Spain
| | - Marcos Vilela-Picos
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Haley Wellman
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Evangelos Kiskinis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- The Ken & Ruth Davee Department of Neurology, Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
| | - Samuel I Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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2
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Qiu R, Chen F, Álvarez Z, Clemons TD, Biswas S, Karver MR, Takata N, Sai H, Peng H, Weigand S, Palmer LC, Stupp SI. Supramolecular Nanofibers Block SARS-CoV-2 Entry into Human Host Cells. ACS Appl Mater Interfaces 2023; 15:26340-26348. [PMID: 37235485 DOI: 10.1021/acsami.3c02447] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection relies on its spike protein binding to angiotensin-converting enzyme 2 (ACE2) on host cells to initiate cellular entry. Blocking the interactions between the spike protein and ACE2 offers promising therapeutic opportunities to prevent infection. We report here on peptide amphiphile supramolecular nanofibers that display a sequence from ACE2 in order to promote interactions with the SARS-CoV-2 spike receptor binding domain. We demonstrate that displaying this sequence on the surface of supramolecular assemblies preserves its α-helical conformation and blocks the entry of a pseudovirus and its two variants into human host cells. We also found that the chemical stability of the bioactive structures was enhanced in the supramolecular environment relative to the unassembled peptide molecules. These findings reveal unique advantages of supramolecular peptide therapies to prevent viral infections and more broadly for other targets as well.
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Affiliation(s)
- Ruomeng Qiu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Feng Chen
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Medicine, Northwestern University, 676 N. St. Clair Street, Chicago, Illinois 60611, United States
| | - Tristan D Clemons
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Suvendu Biswas
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Mark R Karver
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Nozomu Takata
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Hiroaki Sai
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Han Peng
- Department of Dermatology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Steven Weigand
- DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) Synchrotron Research Center, Advanced Photon Source (APS)/Argonne National Laboratory 432-A004, Northwestern University, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Liam C Palmer
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Samuel I Stupp
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Medicine, Northwestern University, 676 N. St. Clair Street, Chicago, Illinois 60611, United States
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3
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Álvarez Z, Ortega JA, Sato K, Sasselli IR, Kolberg-Edelbrock AN, Qiu R, Marshall KA, Nguyen TP, Smith CS, Quinlan KA, Papakis V, Syrgiannis Z, Sather NA, Musumeci C, Engel E, Stupp SI, Kiskinis E. Artificial extracellular matrix scaffolds of mobile molecules enhance maturation of human stem cell-derived neurons. Cell Stem Cell 2023; 30:219-238.e14. [PMID: 36638801 PMCID: PMC9898161 DOI: 10.1016/j.stem.2022.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [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: 09/03/2021] [Revised: 11/04/2022] [Accepted: 12/13/2022] [Indexed: 01/13/2023]
Abstract
Human induced pluripotent stem cell (hiPSC) technologies offer a unique resource for modeling neurological diseases. However, iPSC models are fraught with technical limitations including abnormal aggregation and inefficient maturation of differentiated neurons. These problems are in part due to the absence of synergistic cues of the native extracellular matrix (ECM). We report on the use of three artificial ECMs based on peptide amphiphile (PA) supramolecular nanofibers. All nanofibers display the laminin-derived IKVAV signal on their surface but differ in the nature of their non-bioactive domains. We find that nanofibers with greater intensity of internal supramolecular motion have enhanced bioactivity toward hiPSC-derived motor and cortical neurons. Proteomic, biochemical, and functional assays reveal that highly mobile PA scaffolds caused enhanced β1-integrin pathway activation, reduced aggregation, increased arborization, and matured electrophysiological activity of neurons. Our work highlights the importance of designing biomimetic ECMs to study the development, function, and dysfunction of human neurons.
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Affiliation(s)
- Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Medicine, Northwestern University, Chicago, IL 60611, USA; Biomaterials for Regenerative Therapies, Institute for Bioengineering of Catalonia (IBEC), Barcelona 08028, Spain
| | - J Alberto Ortega
- The Ken & Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, University of Barcelona, L'Hospitalet de Llobregat, Barcelona 08907, Spain
| | - Kohei Sato
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Ivan R Sasselli
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL 60208, USA; Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián 20014, Spain
| | - Alexandra N Kolberg-Edelbrock
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Ruomeng Qiu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Kelly A Marshall
- The Ken & Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Thao Phuong Nguyen
- The Ken & Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Cara S Smith
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Katharina A Quinlan
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Vasileios Papakis
- The Ken & Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Zois Syrgiannis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Nicholas A Sather
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA
| | - Chiara Musumeci
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Elisabeth Engel
- Biomaterials for Regenerative Therapies, Institute for Bioengineering of Catalonia (IBEC), Barcelona 08028, Spain
| | - Samuel I Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL 60208, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA; Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA; Department of Medicine, Northwestern University, Chicago, IL 60611, USA.
| | - Evangelos Kiskinis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; The Ken & Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Neuroscience, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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4
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López A, Burgos T, Vanegas M, Álvarez Z, Mendez Y, Quinteros E. Factors associated with microbiological contamination of chicken meat marketed in El Salvador. Rev Peru Med Exp Salud Publica 2023; 40:25-33. [PMID: 37377232 DOI: 10.17843/rpmesp.2023.401.12100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 03/01/2023] [Indexed: 06/29/2023] Open
Abstract
OBJECTIVE. To determine the hygienic-sanitary factors associated with the microbiological contamination of chicken meat sold at the municipal markets of El Salvador. MATERIALS AND METHODS. An analytical cross-sectional study was conducted in 33 municipal markets of the 14 departmental capitals of El Salvador. The sample consisted of 256 out of 456 possible market stalls. A sample of chicken meat was obtained from each market stall. The microbiological analysis was conducted at the National Public Health Laboratory. Frequencies, percentages, measures of central tendency and association were calculated with SPSS version 21. RESULTS. Escherichia coli was found in 74% of the samples, Staphylococcus aureus in 24% and Salmonella spp. in 1%. The presence of Salmonella spp. was associated with not using hand sanitizer and not using towels for drying the hands. S. aureus was associated with the use of personal accessories and improper storage. The presence of S. aureus was associated with the lack of hand washing, not using a towel to dry the hands and not wearing an apron. CONCLUSION. The hygienic-sanitary conditions of the handlers and the market stalls were associated with microbiological contamination of chicken meat marketed in El Salvador.
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Affiliation(s)
- Alejandro López
- Instituto Nacional de Salud de El Salvador, San Salvador, El Salvador
| | - Tatiana Burgos
- Facultad de Química y Farmacia, Universidad de El Salvador, San Salvador, El Salvador
| | - Marcela Vanegas
- Instituto Nacional de Salud de El Salvador, San Salvador, El Salvador
| | - Zaida Álvarez
- Instituto Nacional de Salud de El Salvador, San Salvador, El Salvador
| | - Yudy Mendez
- Instituto Nacional de Salud de El Salvador, San Salvador, El Salvador
| | - Edgar Quinteros
- Instituto Nacional de Salud de El Salvador, San Salvador, El Salvador
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5
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Qiu R, Sasselli IR, Álvarez Z, Sai H, Ji W, Palmer LC, Stupp SI. Supramolecular Copolymers of Peptides and Lipidated Peptides and Their Therapeutic Potential. J Am Chem Soc 2022; 144:5562-5574. [PMID: 35296133 DOI: 10.1021/jacs.2c00433] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Supramolecular peptide chemistry offers a versatile strategy to create chemical systems useful as new biomaterials with potential to deliver nearly 1000 known candidate peptide therapeutics or integrate other types of bioactivity. We report here on the co-assembly of lipidated β-sheet-forming peptides with soluble short peptides, yielding supramolecular copolymers with various degrees of internal order. At low peptide concentrations, the co-monomer is protected by lodging within internal aqueous compartments and stabilizing internal β-sheets formed by the lipidated peptides. At higher concentrations, the peptide copolymerizes with the lipidated peptide and disrupts the β-sheet secondary structure. The thermodynamic metastability of the co-assembly in turn leads to the spontaneous release of peptide monomers and thus serves as a potential mechanism for drug delivery. We demonstrated the function of these supramolecular systems using a drug candidate for Alzheimer's disease and found that the copolymers enhance neuronal cell viability when the soluble peptide is released from the assemblies.
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Affiliation(s)
- Ruomeng Qiu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ivan R Sasselli
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States.,Department of Medicine, Northwestern University, 676 N. St. Clair Street, Chicago, Illinois 60611, United States
| | - Hiroaki Sai
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States.,Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Wei Ji
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Liam C Palmer
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Samuel I Stupp
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States.,Department of Medicine, Northwestern University, 676 N. St. Clair Street, Chicago, Illinois 60611, United States.,Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States.,Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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6
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Álvarez Z, Kolberg-Edelbrock AN, Sasselli IR, Ortega JA, Qiu R, Syrgiannis Z, Mirau PA, Chen F, Chin SM, Weigand S, Kiskinis E, Stupp SI. Bioactive scaffolds with enhanced supramolecular motion promote recovery from spinal cord injury. Science 2021; 374:848-856. [PMID: 34762454 DOI: 10.1126/science.abh3602] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Z Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - A N Kolberg-Edelbrock
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - I R Sasselli
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - J A Ortega
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,The Ken & Ruth Davee Department of Neurology, Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - R Qiu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Z Syrgiannis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - P A Mirau
- Materials and Manufacturing Directorate, Nanostructured and Biological Materials Branch, Air Force Research Laboratories, Wright-Patterson AFB, OH 45433, USA
| | - F Chen
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA
| | - S M Chin
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - S Weigand
- DuPont-Northwestern-Dow Collaborative Access Team Synchrotron Research Center, Northwestern University, DND-CAT, Argonne, IL 60439, USA
| | - E Kiskinis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,The Ken & Ruth Davee Department of Neurology, Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - S I Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Medicine, Northwestern University, Chicago, IL 60611, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
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7
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Edelbrock AN, Clemons TD, Chin SM, Roan JJW, Bruckner EP, Álvarez Z, Edelbrock JF, Wek KS, Stupp SI. Superstructured Biomaterials Formed by Exchange Dynamics and Host-Guest Interactions in Supramolecular Polymers. Adv Sci (Weinh) 2021; 8:2004042. [PMID: 33898187 PMCID: PMC8061421 DOI: 10.1002/advs.202004042] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/21/2020] [Indexed: 05/12/2023]
Abstract
Dynamic and reversible assembly of molecules is ubiquitous in the hierarchical superstructures of living systems and plays a key role in cellular functions. Recent work from the laboratory reported on the reversible formation of such superstructures in systems of peptide amphiphiles conjugated to oligonucleotides and electrostatically complimentary peptide sequences. Here, a supramolecular system is reported upon where exchange dynamics and host-guest interactions between β-cyclodextrin and adamantane on peptide amphiphiles lead to superstructure formation. Superstructure formation with bundled nanoribbons generates a mechanically robust hydrogel with a highly porous architecture that can be 3D printed. Functionalization of the porous superstructured material with a biological signal results in a matrix with significant in vitro bioactivity toward neurons that could be used as a supramolecular model to design novel biomaterials.
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Affiliation(s)
- Alexandra N. Edelbrock
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Tristan D. Clemons
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
| | - Stacey M. Chin
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
| | - Joshua J. W. Roan
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
| | - Eric P. Bruckner
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
| | - Zaida Álvarez
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
| | - Jack F. Edelbrock
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
| | - Kristen S. Wek
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
| | - Samuel I. Stupp
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
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8
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Li C, Iscen A, Sai H, Sato K, Sather NA, Chin SM, Álvarez Z, Palmer LC, Schatz GC, Stupp SI. Supramolecular-covalent hybrid polymers for light-activated mechanical actuation. Nat Mater 2020; 19:900-909. [PMID: 32572204 DOI: 10.1038/s41563-020-0707-7] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 05/12/2020] [Indexed: 05/19/2023]
Abstract
The development of synthetic structures that mimic mechanical actuation in living matter such as autonomous translation and shape changes remains a grand challenge for materials science. In living systems the integration of supramolecular structures and covalent polymers contributes to the responsive behaviour of membranes, muscles and tendons, among others. Here we describe hybrid light-responsive soft materials composed of peptide amphiphile supramolecular polymers chemically bonded to spiropyran-based networks that expel water in response to visible light. The supramolecular polymers form a reversibly deformable and water-draining skeleton that mechanically reinforces the hybrid and can also be aligned by printing methods. The noncovalent skeleton embedded in the network thus enables faster bending and flattening actuation of objects, as well as longer steps during the light-driven crawling motion of macroscopic films. Our work suggests that hybrid bonding polymers, which integrate supramolecular assemblies and covalent networks, offer strategies for the bottom-up design of soft matter that mimics living organisms.
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Affiliation(s)
- Chuang Li
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA
| | - Aysenur Iscen
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA
| | - Hiroaki Sai
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA
| | - Kohei Sato
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA
| | - Nicholas A Sather
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Stacey M Chin
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Zaida Álvarez
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA
- Department of Medicine, Northwestern University, Chicago, IL, USA
| | - Liam C Palmer
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - George C Schatz
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA.
- Department of Chemistry, Northwestern University, Evanston, IL, USA.
| | - Samuel I Stupp
- Simpson Querrey Institute, Northwestern University, Chicago, IL, USA.
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA.
- Department of Chemistry, Northwestern University, Evanston, IL, USA.
- Department of Medicine, Northwestern University, Chicago, IL, USA.
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA.
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9
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Sato K, Ji W, Álvarez Z, Palmer LC, Stupp SI. Chiral Recognition of Lipid Bilayer Membranes by Supramolecular Assemblies of Peptide Amphiphiles. ACS Biomater Sci Eng 2019; 5:2786-2792. [DOI: 10.1021/acsbiomaterials.9b00553] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Hernandez‐Garcia A, Álvarez Z, Simkin D, Madhan A, Pariset E, Tantakitti F, de J. Vargas‐Dorantes O, Lee SS, Kiskinis E, Stupp SI. Peptide-siRNA Supramolecular Particles for Neural Cell Transfection. Adv Sci (Weinh) 2019; 6:1801458. [PMID: 30775231 PMCID: PMC6364495 DOI: 10.1002/advs.201801458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/21/2018] [Indexed: 05/26/2023]
Abstract
Small interfering ribonucleic acid (siRNA)-based gene knockdown is an effective tool for gene screening and therapeutics. However, the use of nonviral methods has remained an enormous challenge in neural cells. A strategy is reported to design artificial noncationic modular peptides with amplified affinity for siRNA via supramolecular assembly that shows efficient protein knockdown in neural cells. By solid phase synthesis, a sequence that binds specifically double-stranded ribonucleic acid (dsRNA) with a self-assembling peptide for particle formation is integrated. These supramolecular particles can be further functionalized with bioactive sequences without affecting their biophysical properties. The peptide carrier is found to silence efficiently up to 83% of protein expression in primary astroglial and neuronal cell cultures without cytotoxicity. In the case of neurons, a reduction in electrical activity is observed once the presynaptic protein synaptophysin is downregulated by the siRNA-peptide particles. The results demonstrate that the supramolecular particles offer an siRNA delivery platform for efficient nonviral gene screening and discovery of novel therapies for neural cells.
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Affiliation(s)
- Armando Hernandez‐Garcia
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of Chemistry of BiomacromoleculesInstitute of ChemistryNational Autonomous University of MexicoCiudad UniversitariaMexico City04510Mexico
| | - Zaida Álvarez
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Dina Simkin
- Department of PharmacologyFeinberg School of MedicineNorthwestern UniversityChicagoIL60611USA
- The Ken & Ruth Davee Department of Neurology & Clinical Neurological SciencesDepartment of PhysiologyFeinberg School of MedicineNorthwestern UniversityChicagoIL60611USA
| | - Ashwin Madhan
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Eloise Pariset
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | | | - Oscar de J. Vargas‐Dorantes
- Department of Chemistry of BiomacromoleculesInstitute of ChemistryNational Autonomous University of MexicoCiudad UniversitariaMexico City04510Mexico
| | - Sungsoo S. Lee
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Evangelos Kiskinis
- The Ken & Ruth Davee Department of Neurology & Clinical Neurological SciencesDepartment of PhysiologyFeinberg School of MedicineNorthwestern UniversityChicagoIL60611USA
| | - Samuel I. Stupp
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
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11
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Ji W, Álvarez Z, Edelbrock AN, Sato K, Stupp SI. Bioactive Nanofibers Induce Neural Transdifferentiation of Human Bone Marrow Mesenchymal Stem Cells. ACS Appl Mater Interfaces 2018; 10:41046-41055. [PMID: 30475573 DOI: 10.1021/acsami.8b13653] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [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: 05/24/2023]
Abstract
The combination of biomaterials with stem cells is a promising therapeutic strategy to repair traumatic injuries in the central nervous system, and human bone marrow mesenchymal stem cells (BMSCs) offer a clinically translatable option among other possible sources of stem cells. We report here on the use of a supramolecular bioactive material based on a peptide amphiphile (PA), displaying a laminin-mimetic IKVAV sequence to drive neural transdifferentiation of human BMSCs. The IKVAV-PA self-assembles into supramolecular nanofibers that induce neuroectodermal lineage commitment after 1 week, as evidenced by the upregulation of the neural progenitor gene nestin ( NES) and glial fibrillary acidic protein ( GFAP). After 2 weeks, the bioactive IKVAV-PA nanofibers induce significantly higher expression of neuronal markers β-III tubulin (TUJ-1), microtubule-associated protein-2 (MAP-2), and neuronal nuclei (NEUN), as well as the extracellular matrix laminin (LMN). Furthermore, the human BMSCs exposed to the biomaterial reveal a polarized cytoskeletal architecture and a decrease in cellular size, resembling neuron-like cells. We conclude that the investigated supramolecular biomaterial opens the opportunity to transdifferentiate adult human BMSCs into neuronal lineage.
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Affiliation(s)
- Wei Ji
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration , KU Leuven , Leuven 3000 , Belgium
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12
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Freeman R, Han M, Álvarez Z, Lewis JA, Wester JR, Stephanopoulos N, McClendon MT, Lynsky C, Godbe JM, Sangji H, Luijten E, Stupp SI. Reversible self-assembly of superstructured networks. Science 2018; 362:808-813. [PMID: 30287619 DOI: 10.1126/science.aat6141] [Citation(s) in RCA: 196] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/29/2018] [Accepted: 09/24/2018] [Indexed: 12/12/2022]
Abstract
Soft structures in nature, such as protein assemblies, can organize reversibly into functional and often hierarchical architectures through noncovalent interactions. Molecularly encoding this dynamic capability in synthetic materials has remained an elusive goal. We report on hydrogels of peptide-DNA conjugates and peptides that organize into superstructures of intertwined filaments that disassemble upon the addition of molecules or changes in charge density. Experiments and simulations demonstrate that this response requires large-scale spatial redistribution of molecules directed by strong noncovalent interactions among them. Simulations also suggest that the chemically reversible structures can only occur within a limited range of supramolecular cohesive energies. Storage moduli of the hydrogels change reversibly as superstructures form and disappear, as does the phenotype of neural cells in contact with these materials.
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Affiliation(s)
- Ronit Freeman
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Ming Han
- Applied Physics Graduate Program, Northwestern University, Evanston, IL 60208, USA
| | - Zaida Álvarez
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Jacob A Lewis
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - James R Wester
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | | | - Mark T McClendon
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Cheyenne Lynsky
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Jacqueline M Godbe
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Hussain Sangji
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Erik Luijten
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA. .,Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL 60208, USA.,Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
| | - Samuel I Stupp
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA. .,Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Medicine, Northwestern University, Chicago, IL 60611, USA
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13
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Chin SM, Synatschke CV, Liu S, Nap RJ, Sather NA, Wang Q, Álvarez Z, Edelbrock AN, Fyrner T, Palmer LC, Szleifer I, Olvera de la Cruz M, Stupp SI. Covalent-supramolecular hybrid polymers as muscle-inspired anisotropic actuators. Nat Commun 2018; 9:2395. [PMID: 29921928 PMCID: PMC6008453 DOI: 10.1038/s41467-018-04800-w] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 05/14/2018] [Indexed: 12/03/2022] Open
Abstract
Skeletal muscle provides inspiration on how to achieve reversible, macroscopic, anisotropic motion in soft materials. Here we report on the bottom-up design of macroscopic tubes that exhibit anisotropic actuation driven by a thermal stimulus. The tube is built from a hydrogel in which extremely long supramolecular nanofibers are aligned using weak shear forces, followed by radial growth of thermoresponsive polymers from their surfaces. The hierarchically ordered tube exhibits reversible anisotropic actuation with changes in temperature, with much greater contraction perpendicular to the direction of nanofiber alignment. We identify two critical factors for the anisotropic actuation, macroscopic alignment of the supramolecular scaffold and its covalent bonding to polymer chains. Using finite element analysis and molecular calculations, we conclude polymer chain confinement and mechanical reinforcement by rigid supramolecular nanofibers are responsible for the anisotropic actuation. The work reported suggests strategies to create soft active matter with molecularly encoded capacity to perform complex tasks.
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Affiliation(s)
- Stacey M Chin
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | | | - Shuangping Liu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Rikkert J Nap
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
| | - Nicholas A Sather
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Qifeng Wang
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Zaida Álvarez
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Alexandra N Edelbrock
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Timmy Fyrner
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Liam C Palmer
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Igal Szleifer
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
| | - Monica Olvera de la Cruz
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208, USA
| | - Samuel I Stupp
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA.
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA.
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA.
- Department of Medicine, Northwestern University, Chicago, IL, 60611, USA.
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14
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Greene JJ, McClendon MT, Stephanopoulos N, Álvarez Z, Stupp SI, Richter CP. Cover Image, Volume 12, Issue 6. J Tissue Eng Regen Med 2018. [DOI: 10.1002/term.2710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Greene JJ, McClendon MT, Stephanopoulos N, Álvarez Z, Stupp SI, Richter CP. Electrophysiological assessment of a peptide amphiphile nanofiber nerve graft for facial nerve repair. J Tissue Eng Regen Med 2018; 12:1389-1401. [PMID: 29701919 DOI: 10.1002/term.2669] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 09/26/2017] [Revised: 02/01/2018] [Accepted: 04/12/2018] [Indexed: 12/27/2022]
Abstract
Facial nerve injury can cause severe long-term physical and psychological morbidity. There are limited repair options for an acutely transected facial nerve not amenable to primary neurorrhaphy. We hypothesize that a peptide amphiphile nanofiber neurograft may provide the nanostructure necessary to guide organized neural regeneration. Five experimental groups were compared, animals with (1) an intact nerve, (2) following resection of a nerve segment, and following resection and immediate repair with either a (3) autograft (using the resected nerve segment), (4) neurograft, or (5) empty conduit. The buccal branch of the rat facial nerve was directly stimulated with charge balanced biphasic electrical current pulses at different current amplitudes whereas nerve compound action potentials (nCAPs) and electromygraphic responses were recorded. After 8 weeks, the proximal buccal branch was surgically reexposed and electrically evoked nCAPs were recorded for groups 1-5. As expected, the intact nerves required significantly lower current amplitudes to evoke an nCAP than those repaired with the neurograft and autograft nerves. For other electrophysiologic parameters such as latency and maximum nCAP, there was no significant difference between the intact, autograft, and neurograft groups. The resected group had variable responses to electrical stimulation, and the empty tube group was electrically silent. Immunohistochemical analysis and transmission electron microscopy confirmed myelinated neural regeneration. This study demonstrates that the neuroregenerative capability of peptide amphiphile nanofiber neurografts is similar to the current clinical gold standard method of repair and holds potential as an off-the-shelf solution for facial reanimation and potentially peripheral nerve repair.
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Affiliation(s)
- Jacqueline J Greene
- Department of Otolaryngology-Head and Neck Surgery, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Mark T McClendon
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Evanston, IL, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Nicholas Stephanopoulos
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Evanston, IL, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Evanston, IL, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Samuel I Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Evanston, IL, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA.,Department of Chemistry, Northwestern University, Evanston, IL, USA.,Department of Medicine, Northwestern University, Evanston, IL, USA
| | - Claus-Peter Richter
- Department of Otolaryngology-Head and Neck Surgery, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA.,Department of Medicine, Northwestern University, Evanston, IL, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA.,The Hugh Knowles Center, Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL, USA
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16
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Rubert Pérez CM, Álvarez Z, Chen F, Aytun T, Stupp SI. Mimicking the Bioactivity of Fibroblast Growth Factor-2 Using Supramolecular Nanoribbons. ACS Biomater Sci Eng 2017; 3:2166-2175. [PMID: 28920077 PMCID: PMC5596412 DOI: 10.1021/acsbiomaterials.7b00347] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 07/16/2017] [Indexed: 01/04/2023]
Abstract
Fibroblast growth factor (FGF-2) is a multifunctional growth factor that has pleiotropic effects in different tissues and organs. In particular, FGF-2 has a special role in angiogenesis, an important process in development, wound healing, cell survival, and differentiation. Therefore, incorporating biological agents like FGF-2 within therapeutic biomaterials is a potential strategy to create angiogenic bioactivity for the repair of damaged tissue caused by trauma or complications that arise from age and/or disease. However, the use of growth factors as therapeutic agents can be costly and does not always bring about efficient tissue repair due to rapid clearance from the targeted site. An alternative would be a stable supramolecular nanostructure with the capacity to activate the FGF-2 receptor that can also assemble into a scaffold deliverable to tissue. We report here on peptide amphiphiles that incorporate a peptide known to activate the FGF-2 receptor and peptide domains that drive its self-assembly into supramolecular nanoribbons. These FGF2-PA nanoribbons displayed the ability to increase the proliferation and migration of the human umbilical vein endothelial cells (HUVECs) in vitro to the same extent as the native FGF-2 protein at certain concentrations. We confirmed that this activity was specific to the FGFR1 signaling pathway by tracking the phosphorylation of downstream signaling effectors such ERK1/2 and pH3. These results indicated the specificity of FGF2-PA nanoribbons in activating the FGF-2 signaling pathway and its potential application as a supramolecular scaffold that can be used in vivo as an alternative to the encapsulation and delivery of the native FGF-2 protein.
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Affiliation(s)
- Charles M Rubert Pérez
- Simpson Querrey Institute for Bionanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Zaida Álvarez
- Simpson Querrey Institute for Bionanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Feng Chen
- Simpson Querrey Institute for Bionanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States
| | - Taner Aytun
- Department of Materials and Science & Engineering, Department of Chemistry, and Department of Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Samuel I Stupp
- Simpson Querrey Institute for Bionanotechnology, Northwestern University, 303 E. Superior Street, Chicago, Illinois 60611, United States.,Department of Materials and Science & Engineering, Department of Chemistry, and Department of Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States.,Department of Materials and Science & Engineering, Department of Chemistry, and Department of Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States.,Department of Materials and Science & Engineering, Department of Chemistry, and Department of Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States.,Department of Medicine, Northwestern University, 251 E. Huron Street, Chicago, Illinois 60611, United States
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17
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Lee SS, Fyrner T, Chen F, Álvarez Z, Sleep E, Chun DS, Weiner JA, Cook RW, Freshman RD, Schallmo MS, Katchko KM, Schneider AD, Smith JT, Yun C, Singh G, Hashmi SZ, McClendon MT, Yu Z, Stock SR, Hsu WK, Hsu EL, Stupp SI. Sulfated glycopeptide nanostructures for multipotent protein activation. Nat Nanotechnol 2017; 12. [PMID: 28650443 PMCID: PMC5553550 DOI: 10.1038/nnano.2017.109] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Biological systems have evolved to utilize numerous proteins with capacity to bind polysaccharides for the purpose of optimizing their function. A well-known subset of these proteins with binding domains for the highly diverse sulfated polysaccharides are important growth factors involved in biological development and tissue repair. We report here on supramolecular sulfated glycopeptide nanostructures, which display a trisulfated monosaccharide on their surfaces and bind five critical proteins with different polysaccharide-binding domains. Binding does not disrupt the filamentous shape of the nanostructures or their internal β-sheet backbone, but must involve accessible adaptive configurations to interact with such different proteins. The glycopeptide nanostructures amplified signalling of bone morphogenetic protein 2 significantly more than the natural sulfated polysaccharide heparin, and promoted regeneration of bone in the spine with a protein dose that is 100-fold lower than that required in the animal model. These highly bioactive nanostructures may enable many therapies in the future involving proteins.
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Affiliation(s)
- Sungsoo S. Lee
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Timmy Fyrner
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Feng Chen
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Eduard Sleep
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Danielle S. Chun
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Joseph A. Weiner
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Ralph W. Cook
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Ryan D. Freshman
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Michael S. Schallmo
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Karina M. Katchko
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Andrew D. Schneider
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Justin T. Smith
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Chawon Yun
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Gurmit Singh
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Sohaib Z. Hashmi
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Mark T. McClendon
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Zhilin Yu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Stuart R. Stock
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois 60611, USA
| | - Wellington K. Hsu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Erin L. Hsu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Samuel I. Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
- Department of Medicine, Northwestern University, Chicago, Illinois 60611, USA
- Corresponding author:
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18
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Freeman R, Stephanopoulos N, Álvarez Z, Lewis JA, Sur S, Serrano CM, Boekhoven J, Lee SS, Stupp SI. Instructing cells with programmable peptide DNA hybrids. Nat Commun 2017; 8:15982. [PMID: 28691701 PMCID: PMC5508132 DOI: 10.1038/ncomms15982] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 05/19/2017] [Indexed: 12/12/2022] Open
Abstract
The native extracellular matrix is a space in which signals can be displayed dynamically and reversibly, positioned with nanoscale precision, and combined synergistically to control cell function. Here we describe a molecular system that can be programmed to control these three characteristics. In this approach we immobilize peptide-DNA (P-DNA) molecules on a surface through complementary DNA tethers directing cells to adhere and spread reversibly over multiple cycles. The DNA can also serve as a molecular ruler to control the distance-dependent synergy between two peptides. Finally, we use two orthogonal DNA handles to regulate two different bioactive signals, with the ability to independently up- or downregulate each over time. This enabled us to discover that neural stem cells, derived from the murine spinal cord and organized as neurospheres, can be triggered to migrate out in response to an exogenous signal but then regroup into a neurosphere as the signal is removed.
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Affiliation(s)
- Ronit Freeman
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
| | - Nicholas Stephanopoulos
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
| | - Jacob A Lewis
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
| | - Shantanu Sur
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
| | - Chris M Serrano
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, USA
| | - Job Boekhoven
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
| | - Sungsoo S. Lee
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
| | - Samuel I. Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, USA
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, USA
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
- Department of Medicine, Northwestern University, 251 East Huron Street, Chicago, Illinois 60611, USA
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19
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Álvarez Z, Hyroššová P, Perales JC, Alcántara S. Neuronal Progenitor Maintenance Requires Lactate Metabolism and PEPCK-M-Directed Cataplerosis. Cereb Cortex 2014; 26:1046-58. [PMID: 25452568 DOI: 10.1093/cercor/bhu281] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
This study investigated the metabolic requirements for neuronal progenitor maintenance in vitro and in vivo by examining the metabolic adaptations that support neuronal progenitors and neural stem cells (NSCs) in their undifferentiated state. We demonstrate that neuronal progenitors are strictly dependent on lactate metabolism, while glucose induces their neuronal differentiation. Lactate signaling is not by itself capable of maintaining the progenitor phenotype. The consequences of lactate metabolism include increased mitochondrial and oxidative metabolism, with a strict reliance on cataplerosis through the mitochondrial phosphoenolpyruvate carboxykinase (PEPCK-M) pathway to support anabolic functions, such as the production of extracellular matrix. In vivo, lactate maintains/induces populations of postnatal neuronal progenitors/NSCs in a PEPCK-M-dependent manner. Taken together, our data demonstrate that, lactate alone or together with other physical/biochemical cues maintain NSCs/progenitors with a metabolic signature that is classically found in tissues with high anabolic capacity.
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Affiliation(s)
- Zaida Álvarez
- Institute for Bioengineering of Catalonia-IBEC, Barcelona, Spain Department of Pathology and Experimental Therapeutics CIBER en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - Petra Hyroššová
- Department of Physiological Sciences II, Medical School (Bellvitge Campus), University of Barcelona-UB, Barcelona, Spain
| | - José Carlos Perales
- Department of Physiological Sciences II, Medical School (Bellvitge Campus), University of Barcelona-UB, Barcelona, Spain
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20
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Álvarez Z, Sena E, Mattotti M, Engel E, Alcántara S. An efficient and reproducible method to culture Bergmann and cortical radial glia using textured PMMA. J Neurosci Methods 2014; 232:93-101. [PMID: 24854831 DOI: 10.1016/j.jneumeth.2014.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 01/13/2014] [Revised: 04/08/2014] [Accepted: 05/10/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND Radial glia cells comprise the principal population of neural stem cells (NSC) during development. Attempts to develop reproducible radial glia and NSC culture methods have met with variable results, yielding non-adherent cultures or requiring the addition of growth factors. Recent studies demonstrated that a 2-μm patterned poly-methyl methacrylate (ln2 PMMA) grooved scaffold, by mimicking the biophysical and microtopographic properties of the embryonic NSC niche, induces the de-differentiation of glial cells into functional radial glia cells. NEW METHOD Here we describe a method for obtaining cultures of adherent Bergmann radial glia (BRG) and cortical radial glia (CRG). The growth substrate is ln2 PMMA and the addition of growth factors is not required. RESULTS Postnatal glia obtained from mouse cerebellum or cerebral cortex and grown on ln2 PMMA adopted a BRG/CRG phenotype characterized by a bipolar shape, the up-regulation of progenitor markers such as nestin and Sox2, and the down-regulation of vimentin and GFAP. Neurons cultured over the BRG/CRG aligned their processes with those of the glial shafts, thus mimicking the behavior of migrating neuronal cells. COMPARISON WITH EXISTING METHODS The ln2 PMMA culture method offers an ideal system for analyzing both the biochemical factors controlling the neurogenic potential of BRG/CRG and neuronal migration. CONCLUSIONS The ln2 PMMA method is a reproducible system to obtain immature BRG/CRG preparations in vitro. It can be used to study the properties of CNS progenitor cells as well as the interactions between radial glia and neurons, and supports cultured progenitors for use in different applications.
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Affiliation(s)
- Zaida Álvarez
- Department of Pathology and Experimental Therapeutics, Medical School (Bellvitge Campus), University of Barcelona-UB, Barcelona, Spain; Institute for Bioengineering of Catalonia-IBEC, Barcelona, Spain
| | - Elena Sena
- Department of Pathology and Experimental Therapeutics, Medical School (Bellvitge Campus), University of Barcelona-UB, Barcelona, Spain
| | - Marta Mattotti
- Department of Pathology and Experimental Therapeutics, Medical School (Bellvitge Campus), University of Barcelona-UB, Barcelona, Spain; Speech and Hearing Research Laboratory, School of Medicine, University of Split, Croatia
| | - Elisabeth Engel
- Institute for Bioengineering of Catalonia-IBEC, Barcelona, Spain; Department Material Science and Metallurgical Engineering, Technical University of Catalonia-UPC, Barcelona, Spain; Centro de Investigaciòn Médica en Red, Biomecanica, Biomateriales y Nanotecnologìa-CiberBBN, Barcelona, Spain
| | - Soledad Alcántara
- Department of Pathology and Experimental Therapeutics, Medical School (Bellvitge Campus), University of Barcelona-UB, Barcelona, Spain.
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Álvarez Z, Mateos-Timoneda MA, Hyroššová P, Castaño O, Planell JA, Perales JC, Engel E, Alcántara S. The effect of the composition of PLA films and lactate release on glial and neuronal maturation and the maintenance of the neuronal progenitor niche. Biomaterials 2013; 34:2221-33. [DOI: 10.1016/j.biomaterials.2012.12.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 12/09/2012] [Indexed: 12/12/2022]
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