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Heuberger L, Messmer D, dos Santos EC, Scherrer D, Lörtscher E, Schoenenberger C, Palivan CG. Microfluidic Giant Polymer Vesicles Equipped with Biopores for High-Throughput Screening of Bacteria. Adv Sci (Weinh) 2024; 11:e2307103. [PMID: 38158637 PMCID: PMC10953582 DOI: 10.1002/advs.202307103] [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] [Received: 09/26/2023] [Indexed: 01/03/2024]
Abstract
Understanding the mechanisms of antibiotic resistance is critical for the development of new therapeutics. Traditional methods for testing bacteria are often limited in their efficiency and reusability. Single bacterial cells can be studied at high throughput using double emulsions, although the lack of control over the oil shell permeability and limited access to the droplet interior present serious drawbacks. Here, a straightforward strategy for studying bacteria-encapsulating double emulsion-templated giant unilamellar vesicles (GUVs) is introduced. This microfluidic approach serves to simultaneously load bacteria inside synthetic GUVs and to permeabilize their membrane with the pore-forming peptide melittin. This enables antibiotic delivery or the influx of fresh medium into the GUV lumen for highly parallel cultivation and antimicrobial efficacy testing. Polymer-based GUVs proved to be efficient culture and analysis microvessels, as microfluidics allow easy selection and encapsulation of bacteria and rapid modification of culture conditions for antibiotic development. Further, a method for in situ profiling of biofilms within GUVs for high-throughput screening is demonstrated. Conceivably, synthetic GUVs equipped with biopores can serve as a foundation for the high-throughput screening of bacterial colony interactions during biofilm formation and for investigating the effect of antibiotics on biofilms.
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Affiliation(s)
- Lukas Heuberger
- Department of ChemistryUniversity of BaselMattenstrasse 22Basel4002Switzerland
| | - Daniel Messmer
- Department of ChemistryUniversity of BaselMattenstrasse 22Basel4002Switzerland
| | - Elena C. dos Santos
- Department of ChemistryUniversity of BaselMattenstrasse 22Basel4002Switzerland
| | - Dominik Scherrer
- IBM Research Europe–ZürichSäumerstrasse 4Rüschlikon8803Switzerland
| | - Emanuel Lörtscher
- IBM Research Europe–ZürichSäumerstrasse 4Rüschlikon8803Switzerland
- NCCR‐Molecular Systems EngineeringMattenstrasse 24a, BPR 1095Basel4058Switzerland
| | | | - Cornelia G. Palivan
- Department of ChemistryUniversity of BaselMattenstrasse 22Basel4002Switzerland
- NCCR‐Molecular Systems EngineeringMattenstrasse 24a, BPR 1095Basel4058Switzerland
- Swiss Nanoscience Institute (SNI)University of BaselKlingelbergstrasse 82Basel4056Switzerland
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Maffeis V, Heuberger L, Nikoletić A, Schoenenberger C, Palivan CG. Synthetic Cells Revisited: Artificial Cells Construction Using Polymeric Building Blocks. Adv Sci (Weinh) 2024; 11:e2305837. [PMID: 37984885 PMCID: PMC10885666 DOI: 10.1002/advs.202305837] [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] [Received: 08/18/2023] [Revised: 10/06/2023] [Indexed: 11/22/2023]
Abstract
The exponential growth of research on artificial cells and organelles underscores their potential as tools to advance the understanding of fundamental biological processes. The bottom-up construction from a variety of building blocks at the micro- and nanoscale, in combination with biomolecules is key to developing artificial cells. In this review, artificial cells are focused upon based on compartments where polymers are the main constituent of the assembly. Polymers are of particular interest due to their incredible chemical variety and the advantage of tuning the properties and functionality of their assemblies. First, the architectures of micro- and nanoscale polymer assemblies are introduced and then their usage as building blocks is elaborated upon. Different membrane-bound and membrane-less compartments and supramolecular structures and how they combine into advanced synthetic cells are presented. Then, the functional aspects are explored, addressing how artificial organelles in giant compartments mimic cellular processes. Finally, how artificial cells communicate with their surrounding and each other such as to adapt to an ever-changing environment and achieve collective behavior as a steppingstone toward artificial tissues, is taken a look at. Engineering artificial cells with highly controllable and programmable features open new avenues for the development of sophisticated multifunctional systems.
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Affiliation(s)
- Viviana Maffeis
- Department of ChemistryUniversity of BaselMattenstrasse 22BaselCH‐4002Switzerland
- NCCR‐Molecular Systems EngineeringBPR 1095, Mattenstrasse 24aBaselCH‐4058Switzerland
| | - Lukas Heuberger
- Department of ChemistryUniversity of BaselMattenstrasse 22BaselCH‐4002Switzerland
| | - Anamarija Nikoletić
- Department of ChemistryUniversity of BaselMattenstrasse 22BaselCH‐4002Switzerland
- Swiss Nanoscience InstituteUniversity of BaselKlingelbergstrasse 82BaselCH‐4056Switzerland
| | | | - Cornelia G. Palivan
- Department of ChemistryUniversity of BaselMattenstrasse 22BaselCH‐4002Switzerland
- NCCR‐Molecular Systems EngineeringBPR 1095, Mattenstrasse 24aBaselCH‐4058Switzerland
- Swiss Nanoscience InstituteUniversity of BaselKlingelbergstrasse 82BaselCH‐4056Switzerland
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Heuberger L, Korpidou M, Eggenberger OM, Kyropoulou M, Palivan CG. Current Perspectives on Synthetic Compartments for Biomedical Applications. Int J Mol Sci 2022; 23:5718. [PMID: 35628527 PMCID: PMC9145047 DOI: 10.3390/ijms23105718] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 12/04/2022] Open
Abstract
Nano- and micrometer-sized compartments composed of synthetic polymers are designed to mimic spatial and temporal divisions found in nature. Self-assembly of polymers into compartments such as polymersomes, giant unilamellar vesicles (GUVs), layer-by-layer (LbL) capsules, capsosomes, or polyion complex vesicles (PICsomes) allows for the separation of defined environments from the exterior. These compartments can be further engineered through the incorporation of (bio)molecules within the lumen or into the membrane, while the membrane can be decorated with functional moieties to produce catalytic compartments with defined structures and functions. Nanometer-sized compartments are used for imaging, theranostic, and therapeutic applications as a more mechanically stable alternative to liposomes, and through the encapsulation of catalytic molecules, i.e., enzymes, catalytic compartments can localize and act in vivo. On the micrometer scale, such biohybrid systems are used to encapsulate model proteins and form multicompartmentalized structures through the combination of multiple compartments, reaching closer to the creation of artificial organelles and cells. Significant progress in therapeutic applications and modeling strategies has been achieved through both the creation of polymers with tailored properties and functionalizations and novel techniques for their assembly.
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Affiliation(s)
- Lukas Heuberger
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
| | - Maria Korpidou
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
| | - Olivia M. Eggenberger
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
| | - Myrto Kyropoulou
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
- NCCR-Molecular Systems Engineering, Mattenstrasse 24a, BPR 1095, 4058 Basel, Switzerland
| | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
- NCCR-Molecular Systems Engineering, Mattenstrasse 24a, BPR 1095, 4058 Basel, Switzerland
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Schelosky L, Heuberger L, Ganser J, Holzbach T. A rare case of peripherally induced action-specific movement and sensory disorder of the hand and forearm. Hand Surg Rehabil 2020; 40:111-112. [PMID: 32828945 DOI: 10.1016/j.hansur.2020.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/28/2020] [Accepted: 08/05/2020] [Indexed: 11/16/2022]
Affiliation(s)
- L Schelosky
- Department of Neurology, Kantonsspital Muensterlingen, Spitalcampus 1, 8596 Muensterlingen, Switzerland.
| | - L Heuberger
- Department of Occupational Therapy, Kantonsspital Muensterlingen, Spitalcampus 1, 8596 Muensterlingen, Switzerland.
| | - J Ganser
- Department of Hand and Plastic Surgery, Kantonsspital Muensterlingen, Spitalcampus 1, 8596 Muensterlingen, Switzerland.
| | - T Holzbach
- Department of Hand and Plastic Surgery, Kantonsspital Muensterlingen, Spitalcampus 1, 8596 Muensterlingen, Switzerland.
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Weishaupt R, Zünd JN, Heuberger L, Zuber F, Faccio G, Robotti F, Ferrari A, Fortunato G, Ren Q, Maniura‐Weber K, Guex AG. Antibacterial, Cytocompatible, Sustainably Sourced: Cellulose Membranes with Bifunctional Peptides for Advanced Wound Dressings. Adv Healthc Mater 2020; 9:e1901850. [PMID: 32159927 DOI: 10.1002/adhm.201901850] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [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: 12/23/2019] [Revised: 02/14/2020] [Accepted: 02/25/2020] [Indexed: 12/14/2022]
Abstract
Progressive antibiotic resistance is a serious condition adding to the challenges associated with skin wound treatment, and antibacterial wound dressings with alternatives to antibiotics are urgently needed. Cellulose-based membranes are increasingly considered as wound dressings, necessitating further functionalization steps. A bifunctional peptide, combining an antimicrobial peptide (AMP) and a cellulose binding peptide (CBP), is designed. AMPs affect bacteria via multiple modes of action, thereby reducing the evolutionary pressure selecting for antibiotic resistance. The bifunctional peptide is successfully immobilized on cellulose membranes of bacterial origin or electrospun fibers of plant-derived cellulose, with tight control over peptide concentrations (0.2 ± 0.1 to 4.6 ± 1.6 µg mm-2 ). With this approach, new materials with antibacterial activity against Staphylococcus aureus (log4 reduction) and Pseudomonas aeruginosa (log1 reduction) are developed. Furthermore, membranes are cytocompatible in cultures of human fibroblasts. Additionally, a cell adhesive CBP-RGD peptide is designed and immobilized on membranes, inducing a 2.2-fold increased cell spreading compared to pristine cellulose. The versatile concept provides a toolbox for the functionalization of cellulose membranes of different origins and architectures with a broad choice in peptides. Functionalization in tris-buffered saline avoids further purification steps, allowing for translational research and multiple applications outside the field of wound dressings.
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Affiliation(s)
- Ramon Weishaupt
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Janina N. Zünd
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Lukas Heuberger
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Flavia Zuber
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Greta Faccio
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Francesco Robotti
- Laboratory of Thermodynamics in Emerging TechnologiesDepartment of Mechanical and Process EngineeringETH Zurich Sonneggstrasse 3 Zurich 8092 Switzerland
| | - Aldo Ferrari
- EmpaSwiss Federal Laboratories for Material Science and TechnologiesLaboratory for Experimental Continuum Mechanics Überlandstrasse 129 Dübendorf 8600 Switzerland
| | - Giuseppino Fortunato
- EmpaSwiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biomimetic Membranes and Textiles Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Qun Ren
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Katharina Maniura‐Weber
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
| | - Anne Géraldine Guex
- Empa Swiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biointerfaces Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
- EmpaSwiss Federal Laboratories for Materials Science and TechnologyLaboratory for Biomimetic Membranes and Textiles Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
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Weishaupt R, Heuberger L, Siqueira G, Gutt B, Zimmermann T, Maniura-Weber K, Salentinig S, Faccio G. Enhanced Antimicrobial Activity and Structural Transitions of a Nanofibrillated Cellulose-Nisin Biocomposite Suspension. ACS Appl Mater Interfaces 2018; 10:20170-20181. [PMID: 29767501 DOI: 10.1021/acsami.8b04470] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Resistance to antibiotics has posed a high demand for novel strategies to fight bacterial infections. Antimicrobial peptides (AMPs) are a promising alternative to conventional antibiotics. However, their poor solubility in water and sensitivity to degradation has limited their application. Here, we report the design of a smart, pH-responsive antimicrobial nanobiocomposite material based on the AMP nisin and 2,2,6,6-tetramethyl-1-piperidinyloxyl-oxidized nanofibrillated cellulose (TONFC). Morphological transformations of the nanoscale structure of nisin functionalized-TONFC fibrils were discovered at pH values between 5.8 and 8.0 using small-angle X-ray scattering. Complementary ζ potential measurements indicate that electrostatic attractions between the negatively charged TONFC surface and the positively charged nisin molecules are responsible for the integration of nisin. Modification of the pH level or increasing the ionic strength reduces the nisin binding capacity of TONFC. Biological evaluation studies using a bioluminescence-based reporter strain of Bacillus subtilis and a clinically relevant strain of Staphylococcus aureus indicated a significantly higher antimicrobial activity of the TONFC-nisin biocomposite compared to the pure nisin against both strains under physiological pH and ionic strength conditions. The in-depth characterization of this new class of antimicrobial biocomposite material based on nanocellulose and nisin may guide the rational design of sustainable antimicrobial materials.
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Affiliation(s)
- Ramon Weishaupt
- Laboratory for Biointerfaces , Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Lukas Heuberger
- Laboratory for Biointerfaces , Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Gilberto Siqueira
- Laboratory for Applied Wood Materials , Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129 , CH-8600 Dübendorf , Switzerland
| | - Beatrice Gutt
- Laboratory for Biointerfaces , Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Tanja Zimmermann
- Laboratory for Applied Wood Materials , Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129 , CH-8600 Dübendorf , Switzerland
| | - Katharina Maniura-Weber
- Laboratory for Biointerfaces , Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Stefan Salentinig
- Laboratory for Biointerfaces , Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Greta Faccio
- Laboratory for Biointerfaces , Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
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Oehler E, Heuberger L, Ghawche F, Valour F. Syndrome de Good associé à une gammapathie monoclonale à IgA de signification indéterminée. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.03.141] [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: 11/25/2022]
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Kayasut K, Le Tourneau A, Rio B, Bost-Bezeaud F, Heuberger L, Diebold J, Audouin J. Are multicentric Castleman's disease with cutaneous plasmacytosis and systemic plasmacytosis the same entity? Histopathology 2006; 49:557-8. [PMID: 17064311 DOI: 10.1111/j.1365-2559.2006.02532.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
INTRODUCTION Hodgkin's disease in patients infected by the human immunodeficiency virus (HIV) is still not part of the definition of acquired immune deficiency syndrome. Nonetheless, this entity has a particular presentation when compared to the disease occurring in immune-competent patients. CURRENT KNOWLEDGE AND KEY POINTS Increased frequency (> 75%) of advanced anatomical stages and extranodular localizations (Ann Arbor system stages III and IV) has been outlined in HIV-infected patients. Mediastinal involvement is more unusual in immunocompromised than in immune-competent patients. The presence of B symptoms (fever, weight loss, nocturnal sweats) is very frequent. Finally, the predominance of mixed cellularity (type 3) characterizes Hodgkin's disease in immunocompromised patients. Due to either the immunodeficiency, antiretroviral treatments, poor hematological tolerance in response to chemotherapy, or to advanced anatomical stages, disease management may be hampered. Current therapeutical approaches often obtain complete remission; however, some deaths are still related to the disease progression to acquired immune deficiency syndrome. FUTURE PROSPECTS AND PROJECTS From these observations, Hodgkin's disease management in HIV-infected patients relies on therapeutical approaches similar to those used for non infected patients, with some specific recommendations. Chemotherapy should be conducted in the shortest time in order to minimize chemotherapy-induced immunosuppression. Simultaneous use of antiretroviral treatment and reinforced opportunistic infection prophylaxis are of pivotal importance. Finally, the use of hematopoietic growth factors appears to be safe regarding viral replication, but still requires further evaluation.
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Affiliation(s)
- R Costello
- Département d'hématologie, université de la Méditerranée, institut Paoli-Calmettes, Marseille, France
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Heuberger L, Costello RT, Petit N, Fripiat F, Gastaut JA. First case of plasma-cell leukaemia co-existing with human immunodeficiency virus infection. Leukemia 1998; 12:103-4. [PMID: 9436929 DOI: 10.1038/sj.leu.2400890] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Costello R, Merlin M, Heuberger L, Zerazhi H, Boulet JM, Gastaut JA, Bouabdallah R. [IgAk solitary bone plasmacytoma leading to the loss of heavy chain alpha]. Presse Med 1995; 24:1222. [PMID: 7567854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Costello RT, Sainty D, Heuberger L, Gastaut JA, Bouabdallah R. Third case of acute monocytic leukemia (M5) occurring in an HIV-seropositive man: a case report. Am J Hematol 1995; 49:356-7. [PMID: 7639286 DOI: 10.1002/ajh.2830490419] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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