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Keate RL, Tropp J, Wu R, Petty AJ, Ameer GA, Rivnay J. Decoupling the Influence of Poly(3,4-Ethylenedioxythiophene)-Collagen Composite Characteristics on Cell Stemness. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305562. [PMID: 38350724 PMCID: PMC11251566 DOI: 10.1002/advs.202305562] [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: 08/09/2023] [Revised: 01/26/2024] [Indexed: 02/15/2024]
Abstract
Conductive polymers (CPs) are widely studied for their ability to influence a myriad of tissue systems. While their mixed ionic/electronic conductivity is commonly considered the primary driver of these benefits, the mechanisms by which CPs influence cell fate remain unclear. In this study, CP-biomaterial interactions are investigated using collagen, due to its widespread prevalence throughout the body and in tissue engineering constructs. Collagen is functionalized with both electrostatically and covalently bound derivatives of the CP poly(3,4-ethylenedioxythiophene) (PEDOT) doped via backbone-tethered sulfonate groups, which enable high solubility and loading to the collagen biomatrix. Intrinsically doped scaffolds are compared to those incorporated with a commercially available PEDOT formulation, which is complexed with polyanionic polystyrene sulfonate (PSS). Low loadings of intrinsically doped PEDOT do not increase substrate conductivity compared to collagen alone, enabling separate investigation into CP loading and conductivity. Interestingly, higher PEDOT loading bolsters human mesenchymal stromal (hMSC) cell gene expression of Oct-4 and NANOG, which are key transcription factors regulating cell stemness. Conductive collagen composites with commercial PEDOT:PSS do not significantly affect the expression of these transcription factors in hMSCs. Furthermore, it is demonstrated that PEDOT regulates cellular fate independently from physical changes to the material but directly to the loading of the polymer.
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Affiliation(s)
- Rebecca L. Keate
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Center for Advanced Regenerative EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Joshua Tropp
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Center for Advanced Regenerative EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Ruiheng Wu
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Anthony J. Petty
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Center for Advanced Regenerative EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Guillermo A. Ameer
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Center for Advanced Regenerative EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of SurgeryFeinberg School of MedicineNorthwestern UniversityChicagoIL60611USA
- Chemistry of Life Processes InstituteNorthwestern UniversityChicagoIL60208USA
- International Institute for NanotechnologyNorthwestern UniversityChicagoIL60208USA
| | - Jonathan Rivnay
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Center for Advanced Regenerative EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Chemistry of Life Processes InstituteNorthwestern UniversityChicagoIL60208USA
- International Institute for NanotechnologyNorthwestern UniversityChicagoIL60208USA
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Viegas J, Sarmento B. Bridging the gap between testing and clinics exploring alternative pre-clinical models in melanoma research. Adv Drug Deliv Rev 2024; 208:115295. [PMID: 38527625 DOI: 10.1016/j.addr.2024.115295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/20/2024] [Accepted: 03/21/2024] [Indexed: 03/27/2024]
Abstract
Melanoma, the deadliest form of skin cancer, poses a significant clinical challenge for the development of effective treatments. Conventional in vivo animal studies have shown limited translational relevance to humans, raising strength to pre-clinical models for melanoma research. This review provides an in-depth analysis of alternative pre-clinical models including in vitro and ex vivo platforms such as reconstructed skin, spheroids, organoids, organotypic models, skin-on-a-chip, and bioprinting. Through a comprehensive analysis, the specific attributes, advantages, and limitations of each model are elucidated. It discusses the points related to the uniqueness advantages, from capturing complex interactions between melanoma cells and their microenvironment to enabling high-throughput drug screening and personalized medicine approaches. This review is structured covering firstly the roadmap to identify the co-occurrence of discovering new melanoma treatments and the development of its models, secondly it covers a comparative between the most used models followed by a section discussing each of them: the in vitro and ex vivo models. It intends to serve as an asset for researchers of melanoma field and clinicians involved in melanoma therapy, offering insights into the diverse preclinical models available for optimizing their integration into the translational pipeline.
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Affiliation(s)
- Juliana Viegas
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Bruno Sarmento
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; IUCS-CESPU - Instituto Universitário de Ciências da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal.
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Liu Y, Zhao C, Song C, Shen X, Wang F, Zhang Y, Ma Y, Ding X. A mussel inspired polyvinyl alcohol/collagen/tannic acid bioadhesive for wet adhesion and hemostasis. Colloids Surf B Biointerfaces 2024; 235:113766. [PMID: 38278032 DOI: 10.1016/j.colsurfb.2024.113766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 01/28/2024]
Abstract
Bioadhesives are useful in surgery for hemostasis, tissue sealing and wound healing. However, most bioadhesives have limitations such as weak adhesion in wet conditions, insufficient sealing and poor clotting performance. Inspired by the adhesion mechanism of marine mussels, a novel bioadhesive (PCT) was developed by simply combining polyvinyl alcohol (PVA), collagen (COL) and tannic acid (TA) together. The results showed that the adhesion, sealing and blood coagulation properties boosted with the increase of tannic acid content in PCT. The wet shear adhesion strength of PCT-5 (the weight ratio of PVA:COL:TA=1:1:5) was 60.8 ± 0.6 kPa, the burst pressure was 213.7 ± 0.7 mmHg, and the blood clotting index was 39.3% ± 0.6%, respectively. In rat heart hemostasis tests, PCT-5 stopped bleeding in 23.7 ± 3.2 s and reduced bleeding loss to 83.0 ± 19.1 mg, which outperformed the benchmarks of commercial gauze (53.3 ± 8.7 s and 483.0 ± 15.0 mg) and 3 M adhesive (Type No.1469SB, 35.3 ± 5.0 s and 264.0 ± 14.2 mg). The as-prepared bioadhesive could provide significant benefits for tissue sealing and hemorrhage control along its low cost and facile preparation process.
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Affiliation(s)
- Ying Liu
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing 100029, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chenyu Zhao
- National Institutes for Food and Drug Control, Beijing 102629 China
| | - Changtong Song
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing 100029, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiao Shen
- Center of Stomatology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Fengji Wang
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing 100029, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yisong Zhang
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing 100029, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuhong Ma
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing 100029, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Xuejia Ding
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing 100029, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
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