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Zumbardo-Bacelis GA, Peponi L, Vargas-Coronado RF, Rodríguez-Velázquez E, Alatorre-Meda M, Chevallier P, Copes F, Mantovani D, Abraham GA, Cauich-Rodríguez JV. A Comparison of Three-Layer and Single-Layer Small Vascular Grafts Manufactured via the Roto-Evaporation Method. Polymers (Basel) 2024; 16:1314. [PMID: 38794507 PMCID: PMC11125268 DOI: 10.3390/polym16101314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
This study used the roto-evaporation technique to engineer a 6 mm three-layer polyurethane vascular graft (TVG) that mimics the architecture of human coronary artery native vessels. Two segmented polyurethanes were synthesized using lysine (SPUUK) and ascorbic acid (SPUAA), and the resulting materials were used to create the intima and adventitia layers, respectively. In contrast, the media layer of the TVG was composed of a commercially available polyurethane, Pearlbond 703 EXP. For comparison purposes, single-layer vascular grafts (SVGs) from individual polyurethanes and a polyurethane blend (MVG) were made and tested similarly and evaluated according to the ISO 7198 standard. The TVG exhibited the highest circumferential tensile strength and longitudinal forces compared to single-layer vascular grafts of lower thicknesses made from the same polyurethanes. The TVG also showed higher suture and burst strength values than native vessels. The TVG withstood up to 2087 ± 139 mmHg and exhibited a compliance of 0.15 ± 0.1%/100 mmHg, while SPUUK SVGs showed a compliance of 5.21 ± 1.29%/100 mmHg, akin to coronary arteries but superior to the saphenous vein. An indirect cytocompatibility test using the MDA-MB-231 cell line showed 90 to 100% viability for all polyurethanes, surpassing the minimum 70% threshold needed for biomaterials deemed cytocompatibility. Despite the non-cytotoxic nature of the polyurethane extracts when grown directly on the surface, they displayed poor fibroblast adhesion, except for SPUUK. All vascular grafts showed hemolysis values under the permissible limit of 5% and longer coagulation times.
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Affiliation(s)
- Gualberto Antonio Zumbardo-Bacelis
- Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 #130 x 32 y 34, Colonia Chuburná de Hidalgo, Mérida C.P. 97205, Mexico; (G.A.Z.-B.); (R.F.V.-C.)
- Department of Chemical Engineering, Laval University, Quebec, QC G1V 0A6, Canada
| | - Laura Peponi
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
| | - Rossana Faride Vargas-Coronado
- Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 #130 x 32 y 34, Colonia Chuburná de Hidalgo, Mérida C.P. 97205, Mexico; (G.A.Z.-B.); (R.F.V.-C.)
| | - Eustolia Rodríguez-Velázquez
- Facultad de Odontología, Universidad Autónoma de Baja California, Tijuana 22390, Mexico;
- Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico
| | - Manuel Alatorre-Meda
- Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, CONAHCYT-Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico;
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec, QC G1V0A6, Canada; (P.C.)
| | - Francesco Copes
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec, QC G1V0A6, Canada; (P.C.)
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec, QC G1V0A6, Canada; (P.C.)
| | - Gustavo A. Abraham
- Research Institute for Materials Science and Technology, INTEMA (UNMdP-CONICET). Av. Colón 10850, Mar del Plata B7606BWV, Argentina
| | - Juan Valerio Cauich-Rodríguez
- Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 #130 x 32 y 34, Colonia Chuburná de Hidalgo, Mérida C.P. 97205, Mexico; (G.A.Z.-B.); (R.F.V.-C.)
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Wu MM, Liao B, Xia IF, Luk PK, Wong KH, Kwok KW. Food emulsifiers increase toxicity of food contaminants in three human GI tract cell lines. Food Chem Toxicol 2024; 185:114499. [PMID: 38309685 DOI: 10.1016/j.fct.2024.114499] [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: 08/17/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
Food products simultaneously containing both food contaminants and emulsifiers are common in baked products, coffee and chocolate. Little is known regarding how food contaminants and emulsifiers interact and alter toxicity. Recent studies have shown that while emulsifiers themselves have little toxicity, they could cause changes in the gut microenvironment and lead to issues such as increased uptake of allergens. This study examined toxic effect of two common process contaminants acrylamide (AA) and benzo [a]pyrene (BAP) combined with food emulsifiers polyoxyethylene sorbitan monooleate (TW) or glycerol monostearate (G). In liver cell line HepG2 and gastrointestinal cell lines HIEC6 and Caco-2, toxicities of AA and BAP were increased by TW but not by G as indicated by decrease in IC50 values. Addition of TW also exacerbated gene expression changes caused by AA or BAP. Cellular uptake and cell membrane permeability were enhanced by TW but not by G, but tight junction proteins of Caco-2 monolayer was impacted by both emulsifiers. These results suggested that TW could increase toxicity of AA and BAP through increasing cell permeability thus chemical uptake and potentially through other interactions. The study is to draw the attention of regulators on the potential synergistic interaction of co-occurring chemicals in food.
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Affiliation(s)
- Margaret Mh Wu
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, China; Research Institute for Future Food, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Baoshan Liao
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, China; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China
| | - Ivan Fan Xia
- Section of Cardiology, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - Peter Kh Luk
- Research Institute for Future Food, The Hong Kong Polytechnic University, Hong Kong, China
| | - Ka-Hing Wong
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, China; Research Institute for Future Food, The Hong Kong Polytechnic University, Hong Kong, China
| | - Kevin Wh Kwok
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, China; Research Institute for Future Food, The Hong Kong Polytechnic University, Hong Kong, China.
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Shen Y, Xu Y, Yu Z, Chen G, Chen B, Liao L. Multifunctional Injectable Microspheres Containing "Naturally-Derived" Photothermal Transducer for Synergistic Physical and Chemical Treating of Acute Osteomyelitis through Sequential Immunomodulation. ACS NANO 2024. [PMID: 38335113 DOI: 10.1021/acsnano.3c10697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Osteomyelitis induced by Staphylococcus aureus (S. aureus) is a persistent and deep-seated infection that affects bone tissue. The main challenges in treating osteomyelitis include antibiotic resistance, systemic toxicity, and the need for multiple recurrent surgeries. An ideal therapeutic strategy involves the development of materials that combine physical, chemical, and immunomodulatory synergistic effects. In this work, we prepared injectable microspheres consisting of an interpenetrating network of ionic-cross-linked sodium alginate (SA) and genipin (Gp)-cross-linked gelatin (Gel) incorporated with tannic acid (TA) and copper ions (Cu2+). The Gp-cross-linked Gel acted as a "naturally-derived" photothermal therapy (PTT) agent. The results showed that the microspheres exhibited efficient and rapid bactericidal effects against both S. aureus and Escherichia coli (E. coli) under the irradiation of near-infrared light at 808 nm wavelength; moreover, the release of Cu2+ also induced sustained inhibitory effects against bacteria during the nonirradiation period. The in vitro cell culture results indicated that when combined with PTT, the microspheres could adaptively modulate macrophage M1 and M2 phenotypes in sequence. Additionally, these microspheres were found to enhance the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). In vivo studies conducted in a rat femur osteomyelitis model with bone defects showed that under multiple laser irradiation the microspheres effectively controlled bacterial infection, improved the pathological immune microenvironment, and significantly enhanced the repair and regeneration of bone tissues in the affected area.
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Affiliation(s)
- Yang Shen
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Yaowen Xu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ziqian Yu
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Guo Chen
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Bin Chen
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Liqiong Liao
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
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Fahimi P, Matta CF, Okie JG. Are size and mitochondrial power of cells inter-determined? J Theor Biol 2023; 572:111565. [PMID: 37369290 DOI: 10.1016/j.jtbi.2023.111565] [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: 02/20/2023] [Revised: 05/16/2023] [Accepted: 06/21/2023] [Indexed: 06/29/2023]
Abstract
Mitochondria are the central hub of ATP production in most eukaryotic cells. Cellular power (energy per unit time), which is primarily generated in these organelles, is crucial to our understanding of cell function in health and disease. We investigated the relation between a mitochondrion's power (metabolic rate) and host cell size by combining metabolic theory with the analysis of two recent databases, one covering 109 protists and the other 63 species including protists, metazoans, microalgae, and vascular plants. We uncovered an interesting statistical regularity: in well-fed protists, relatively elevated values of mitochondrion power cluster around the smallest cell sizes and the medium-large cell sizes. In contrast, in starved protists and metazoans, the relation between mitochondrion power and cell size is inconclusive, and in microalgae and plants, mitochondrion power seems to increase from smaller cells to larger ones (where this investigation includes plant cells of volume up to ca. 2.18 × 105 μm3). Using these results, estimates are provided of the number of active ATP synthase molecules and basal uncouplers.
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Affiliation(s)
- Peyman Fahimi
- Département de Chimie, Université Laval, Québec, QC G1V0A6, Canada
| | - Chérif F Matta
- Département de Chimie, Université Laval, Québec, QC G1V0A6, Canada; Department of Chemistry and Physics, Mount Saint Vincent University, Halifax, NS B3M2J6, Canada.
| | - Jordan G Okie
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA.
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Wang X, Li J, Chen R, Li T, Chen M. Active Ingredients from Chinese Medicine for Combination Cancer Therapy. Int J Biol Sci 2023; 19:3499-3525. [PMID: 37497002 PMCID: PMC10367560 DOI: 10.7150/ijbs.77720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/26/2023] [Indexed: 07/28/2023] Open
Abstract
Combination therapy against cancer has gained increasing attention because it can help to target multiple pathways to tackle oncologic progression and improve the limited antitumor effect of single-agent therapy. Chinese medicine has been studied extensively in cancer therapy and proven to be efficacious in many cases due to its wide spectrum of anticancer activities. In this review, we aim to summarize the recent progress of active ingredients from Chinese medicine (AIFCM) in combination with various cancer therapeutic modalities, including chemotherapy, gene therapy, radiotherapy, phototherapy and immunotherapy. In addition to highlighting the potential contribution of AIFCM in combination cancer therapy, we also elucidate the underlying mechanisms behind their synergistic effect and improved anticancer efficacy, thereby encouraging the inclusion of these AIFCM as part of effective armamentarium in fighting intractable cancers. Finally, we present the challenges and future perspectives of AIFCM combination therapy as a feasible and promising strategy for the optimization of cancer treatment and better clinical outcomes.
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Affiliation(s)
- Xuan Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, 999078, China
| | - Jing Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, 999078, China
| | - Ruie Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, 999078, China
| | - Ting Li
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, 999078, China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, 999078, China
- MoE Frontiers Science Center for Precision Oncology, University of Macau, Macau, 999078, China
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Tian T, Yang X, Liu S, Han Z, Qiao W, Li J, Yang M, Zhang Y. Hyper-thermophilic anaerobic pretreatment enhances the removal of transferable oxazolidinone and phenicol cross-resistance gene optrA in enterococci. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 167:92-102. [PMID: 37245400 DOI: 10.1016/j.wasman.2023.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/08/2023] [Accepted: 05/18/2023] [Indexed: 05/30/2023]
Abstract
The extensive use of florfenicol in poultry industry results in the emergence of optrA gene, which also confers resistance to clinically important antibiotic linezolid. This study investigated the occurrence, genetic environments, and removal of optrA in enterococci in mesophilic (37 °C) and thermophilic (55 °C) anaerobic digestion systems, and a hyper-thermophilic (70 °C) anaerobic pretreatment system for chicken waste. A total of 331 enterococci were isolated and analyzed for antibiotic resistance against linezolid and florfenicol. The optrA gene was frequently detected in enterococci from chicken waste (42.7%) and effluents from mesophilic (72%) and thermophilic (56.8%) reactors, but rarely detected in the hyper-thermophilic (5.8%) effluent. Whole-genome sequencing revealed that optrA-carrying Enterococcus faecalis sequence type (ST) 368 and ST631 were the dominant clones in chicken waste, and they remained dominant in mesophilic and thermophilic effluents, respectively. The plasmid-borne IS1216E-fexA-optrA-erm(A)-IS1216E was the core genetic element for optrA in ST368, whereas chromosomal Tn554-fexA-optrA was the key one in ST631. IS1216E might play a key role in horizontal transfer of optrA due to its presence in different clones. Hyper-thermophilic pretreatment removed enterococci with plasmid-borne IS1216E-fexA-optrA-erm(A)-IS1216E. A hyper-thermophilic pretreatment is recommended for chicken waste to mitigate dissemination of optrA from animal waste to the environment.
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Affiliation(s)
- Tiantian Tian
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoxiao Yang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Shihai Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ziming Han
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Qiao
- College of Engineering, China Agricultural University, Beijing 100083, China
| | - Jiuyi Li
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Min Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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King MA, Grosche A, Ward SM, Ward JA, Sasidharan A, Mayer TA, Plamper ML, Xu X, Ward MD, Clanton TL, Vidyasagar S. Amino acid solution mitigates hypothermia response and intestinal damage following exertional heat stroke in male mice. Physiol Rep 2023; 11:e15681. [PMID: 37217446 PMCID: PMC10202825 DOI: 10.14814/phy2.15681] [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: 03/29/2023] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 05/24/2023] Open
Abstract
Increased gut permeability is implicated in the initiation and extent of the cytokine inflammatory response associated with exertional heat stroke (EHS). The primary objective of this study was to determine if a five amino acid oral rehydration solution (5AAS), specifically designed for the protection of the gastrointestinal lining, would prolong time to EHS, maintain gut function and dampen the systemic inflammatory response (SIR) measured during EHS recovery. Male C57/BL6J mice instrumented with radiotelemetry were gavaged with 150 μL of 5AAS or H2 O, and ≈12 h later were either exposed to an EHS protocol where mice exercised in a 37.5°C environmental chamber to a self-limiting maximum core temperature (Tc,max) or performed the exercise control (EXC) protocol (25°C). 5AAS pretreatment attenuated hypothermia depth and length (p < 0.005), which are indicators of EHS severity during recovery, without any effect on physical performance or thermoregulatory responses in the heat as determined by percent body weight lost (≈9%), max speed (≈6 m/min), distance (≈700 m), time to Tc,max (≈160 min), thermal area (≈550°C∙min), and Tc,max (42.2°C). EHS groups treated with 5AAS showed a significant decrease in gut transepithelial conductance, decreased paracellular permeability, increased villus height, increased electrolyte absorption and changes in tight junction protein expression pattern suggestive of improved barrier integrity (p < 0.05). No differences were witnessed between EHS groups in acute phase response markers of liver, circulating SIR markers, or indicators of organ damage during recovery. These results suggest that a 5AAS improves Tc regulation during EHS recovery through maintaining mucosal function and integrity.
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Affiliation(s)
- Michelle A. King
- Thermal and Mountain Medicine DivisionUnited States Army Research Institute of Environmental MedicineNatickMassachusettsUSA
| | - Astrid Grosche
- Radiation OncologyUniversity of Florida College of MedicineGainesvilleFloridaUSA
| | - Shauna M. Ward
- Thermal and Mountain Medicine DivisionUnited States Army Research Institute of Environmental MedicineNatickMassachusettsUSA
| | - Jermaine A. Ward
- Thermal and Mountain Medicine DivisionUnited States Army Research Institute of Environmental MedicineNatickMassachusettsUSA
| | - Anusree Sasidharan
- Radiation OncologyUniversity of Florida College of MedicineGainesvilleFloridaUSA
| | - Thomas A. Mayer
- Thermal and Mountain Medicine DivisionUnited States Army Research Institute of Environmental MedicineNatickMassachusettsUSA
| | - Mark L. Plamper
- Thermal and Mountain Medicine DivisionUnited States Army Research Institute of Environmental MedicineNatickMassachusettsUSA
| | - Xiaodong Xu
- Radiation OncologyUniversity of Florida College of MedicineGainesvilleFloridaUSA
| | - Matthew D. Ward
- Thermal and Mountain Medicine DivisionUnited States Army Research Institute of Environmental MedicineNatickMassachusettsUSA
| | - Thomas L. Clanton
- Health and Human PerformanceUniversity of FloridaGainesvilleFloridaUSA
| | - Sadasivan Vidyasagar
- Radiation OncologyUniversity of Florida College of MedicineGainesvilleFloridaUSA
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Wang W, Gao Y, Zhang M, Li Y, Tang BZ. Neutrophil-like Biomimic AIE Nanoparticles with High-Efficiency Inflammatory Cytokine Targeting Enable Precise Photothermal Therapy and Alleviation of Inflammation. ACS NANO 2023; 17:7394-7405. [PMID: 37009988 DOI: 10.1021/acsnano.2c11762] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Although photothermal therapy (PTT) has thrived as a promising treatment for drug-resistant bacterial infections by avoiding the abuse of antibiotics, the remaining challenges that limit the treatment efficiency are the poor targeting properties of infected lesions and low penetration to the cell membrane of Gram-negative bacteria. Herein, we developed a biomimetic neutrophil-like aggregation-induced emission (AIE) nanorobot (CM@AIE NPs) for precise inflammatory site homing and efficient PTT effects. Due to their surface-loaded neutrophil membranes, CM@AIE NPs can mimic the source cell and thus interact with immunomodulatory molecules that would otherwise target endogenous neutrophils. Coupled with the secondary near-infrared region absorption and excellent photothermal properties of AIE luminogens (AIEgens), precise localization, and treatment in inflammatory sites can be achieved, thereby minimizing damage to surrounding normal tissues. Moreover, CM@AIE NP-mediated PTT was stimulated in vivo by a 980 nm laser irradiation, which contributed to the extent of the therapeutic depth and limited the damage to skin tissues. The good biocompatibility and excellent in vitro and in vivo antibacterial effects prove that CM@AIE NPs can provide a strategy for broad-spectrum antibacterial applications.
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Affiliation(s)
- Wentao Wang
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark
| | - Yumeng Gao
- Jiangsu Collaborative Innovation Center for Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Ming Zhang
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing 210029, China
| | - Yuanyuan Li
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Ben Zhong Tang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
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Sanchez TW, Ronzetti MH, Owens AE, Antony M, Voss T, Wallgren E, Talley D, Balakrishnan K, Leyes Porello SE, Rai G, Marugan JJ, Michael SG, Baljinnyam B, Southall N, Simeonov A, Henderson MJ. Real-Time Cellular Thermal Shift Assay to Monitor Target Engagement. ACS Chem Biol 2022; 17:2471-2482. [PMID: 36049119 PMCID: PMC9486815 DOI: 10.1021/acschembio.2c00334] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Determining a molecule's mechanism of action is paramount during chemical probe development and drug discovery. The cellular thermal shift assay (CETSA) is a valuable tool to confirm target engagement in cells for a small molecule that demonstrates a pharmacological effect. CETSA directly detects biophysical interactions between ligands and protein targets, which can alter a protein's unfolding and aggregation properties in response to thermal challenge. In traditional CETSA experiments, each temperature requires an individual sample, which restricts throughput and requires substantial optimization. To capture the full aggregation profile of a protein from a single sample, we developed a prototype real-time CETSA (RT-CETSA) platform by coupling a real-time PCR instrument with a CCD camera to detect luminescence. A thermally stable Nanoluciferase variant (ThermLuc) was bioengineered to withstand unfolding at temperatures greater than 90 °C and was compatible with monitoring target engagement events when fused to diverse targets. Utilizing well-characterized inhibitors of lactate dehydrogenase alpha, RT-CETSA showed significant correlation with enzymatic, biophysical, and other cell-based assays. A data analysis pipeline was developed to enhance the sensitivity of RT-CETSA to detect on-target binding. RT-CETSA technology advances capabilities of the CETSA method and facilitates the identification of ligand-target engagement in cells, a critical step in assessing the mechanism of action of a small molecule.
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10
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Minaei SE, Khoei S, Khoee S, Mahdavi SR. Sensitization of glioblastoma cancer cells to radiotherapy and magnetic hyperthermia by targeted temozolomide-loaded magnetite tri-block copolymer nanoparticles as a nanotheranostic agent. Life Sci 2022; 306:120729. [PMID: 35753439 DOI: 10.1016/j.lfs.2022.120729] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/09/2022] [Accepted: 06/20/2022] [Indexed: 11/27/2022]
Abstract
AIMS Recently, the development of new strategies in the treatment and diagnosis of cancer cells such as thermo-radiation-sensitizer and theranostic agents have received a great deal of attention. In this work, folic acid-conjugated temozolomide-loaded SPION@PEG-PBA-PEG nanoparticles (TMZ-MNP-FA NPs) were proposed for use as magnetic resonance imaging (MRI) contrast agents and to enhance the cytotoxic effects of hyperthermia and radiotherapy. MAIN METHODS Nanoparticles were synthesized by the Nano-precipitation method and their characteristics were determined by dynamic light scattering (DLS), scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). To evaluate the thermo-radio-sensitization effects of NPs, C6 cells were treated with nanoparticles for 24 h and then exposed to 6-MV X-ray radiation. After radiotherapy, the cells were subjected to an alternating magnetic field (AMF) hyperthermia. The therapeutic potential was assessed using clonogenic assay, ROS generation measurement, flow cytometry assay, and qRT-PCR analysis. Also, the diagnostic properties of the nanoparticles were assessed by MRI. KEY FINDINGS MRI scanning indicated that nanoparticles accumulated in C6 cells could be tracked by T2-weighted MR imaging. Colony formation assay proved that TMZ-MNP-FA NPs enhanced the anti-proliferation effects of AMF by 1.94-fold compared to AMF alone (P < 0.0001). Moreover, these NPs improved the radiation effects with a dose enhancement factor of 1.65. All results showed that the combination of carrier-based chemotherapy with hyperthermia and radiotherapy caused a higher anticancer efficacy than single- or two-modality treatments. SIGNIFICANCE The nanoparticles advanced in this study can be proposed as the promising theranostic and thermo-radio-sensitizer platform for the diagnosis and tri-modal synergistic cancer therapy.
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Affiliation(s)
- Soraya Emamgholizadeh Minaei
- Department of Medical Physics and Imaging, School of Allied Medical Sciences, Urmia University of Medical Sciences, Urmia, Iran
| | - Samideh Khoei
- Finetech in Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Sepideh Khoee
- Department of Polymer Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Seied Rabi Mahdavi
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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11
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Woo DW, Malintha GHT, Celino-Brady FT, Yamaguchi Y, Breves JP, Seale AP. Tilapia prolactin cells are thermosensitive osmoreceptors. Am J Physiol Regul Integr Comp Physiol 2022; 322:R609-R619. [PMID: 35438003 DOI: 10.1152/ajpregu.00027.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Prolactin (PRL) cells within the rostral pars distalis (RPD) of euryhaline and eurythermal Mozambique tilapia, Oreochromis mossambicus, rapidly respond to a hyposmotic stimulus by releasing two distinct PRL isoforms, PRL188 and PRL177. Here, we describe how environmentally relevant temperature changes affected mRNA levels of PRL188 and PRL177 and the release of immunoreactive prolactins from RPDs and dispersed PRL cells. When applied under isosmotic conditions (330 mOsm/kg), a 6 °C rise in temperature stimulated the release of PRL188 and PRL177 from both RPDs and dispersed PRL cells under perifusion. When exposed to this same change in temperature, ~50% of dispersed PRL cells gradually increased in volume by ~8%, a response partially inhibited by the water channel blocker, mercuric chloride. Following their response to increased temperature, PRL cells remained responsive to a hyposmotic stimulus (280 mOsm/kg). The mRNA expression of transient potential vanilloid 4, a Ca2+-channel involved in hyposomotically-induced PRL release, was elevated in response to a rise in temperature in dispersed PRL cells and RPDs at 6 and 24 h, respectively; prl188 and prl177 mRNAs were unaffected. Our findings indicate that thermosensitive PRL release is mediated, at least partially, through a cell-volume dependent pathway similar to how osmoreceptive PRL release is achieved.
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Affiliation(s)
- Daniel W Woo
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI, United States
| | - G H T Malintha
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI, United States
| | - Fritzie T Celino-Brady
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI, United States
| | - Yoko Yamaguchi
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, Matsue, Japan
| | - Jason P Breves
- Department of Biology, Skidmore College, Saratoga Springs, NY, United States
| | - Andre P Seale
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI, United States
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12
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Li Z, McKenna Z, Fennel Z, Nava RC, Wells A, Ducharme J, Houck J, Morana K, Mermier C, Kuennen M, Magalhaes FDC, Amorim F. The combined effects of exercise-induced muscle damage and heat stress on acute kidney stress and heat strain during subsequent endurance exercise. Eur J Appl Physiol 2022; 122:1239-1248. [PMID: 35237867 DOI: 10.1007/s00421-022-04919-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 02/14/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE The purpose of the study was to investigate the combined effect of downhill running and heat stress on muscle damage, as well as on heat strain and kidney stress during subsequent running in the heat. METHODS In a randomized cross-over study, ten non-heat-acclimated, physically active males completed downhill running in temperate (EIMD in Temp) and hot (EIMD in Hot) conditions followed by an exercise-heat stress (HS) test after 3-h seated rest. Blood and urine samples were collected immediately pre- and post-EIMD and HS, and 24 h post-EIMD (post-24 h). Core temperature and thermal sensation were measured to evaluate heat strain. Serum creatine kinase (CK), maximal voluntary isometric contraction of the quadriceps (MVC) and perceived muscle soreness were measured to evaluate muscle damage. Urinary neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) levels were measured to indicate acute kidney stress. RESULTS CK, MVC and perceived soreness were not different between conditions at any timepoints. In the EIMD in Hot condition, urinary NGAL was significantly elevated from pre- to post-HS (pre-HS: 6.56 {1.53-12.24} ng/min, post-HS: 13.72 {7.67-21.46} ng/min, p = 0.034). Such elevation of NGAL or KIM-1 was not found in the EIMD in Temp condition. CONCLUSIONS As compared with downhill running in a temperate environment, downhill running in a hot environment does not appear to aggravate muscle damage. However, elevated NGAL levels following EIMD in a hot environment suggest such exercise may increase risk of mild acute kidney injury during subsequent endurance exercise in the heat.
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Affiliation(s)
- Zidong Li
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA. .,Department of Health and Human Performance, Northwestern State University, Natchitoches, LA, USA.
| | - Zachary McKenna
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Zachary Fennel
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Roberto Carlos Nava
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA.,Research Division, Joslin Diabetes Center, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Andrew Wells
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA.,Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Jeremy Ducharme
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Jonathan Houck
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA.,Department of Health and Human Performance, Roanoke College, Salem, VA, USA
| | - Kylie Morana
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Christine Mermier
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Matthew Kuennen
- Department of Exercise Science, High Point University, High Point, NC, USA
| | - Flavio de Castro Magalhaes
- Department of Physical Education, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
| | - Fabiano Amorim
- Department of Health, Exercise and Sport Sciences, University of New Mexico, Albuquerque, NM, USA
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13
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Ribert P, Dupont S, Roudaut G, Beney L. Effect of devitrification on the survival and resistance of dried Saccharomyces cerevisiae yeast. Appl Microbiol Biotechnol 2021; 105:6409-6418. [PMID: 34423411 DOI: 10.1007/s00253-021-11451-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 10/20/2022]
Abstract
Yeasts are anhydrobiotes that accumulate large amounts of trehalose, which is involved in the vitrification of the cytoplasm during drastic desiccation. The effect of devitrification, which can be induced by the transient exposure of desiccated yeasts to increased humidity or elevated temperature, on the survival of yeast has been studied. A glass transition temperature (Tg)/water activity (aw) diagram of yeast was constructed based on differential scanning calorimetry analysis. The survival rate of yeasts that were equilibrated at different relative humidities (RHs) and temperature values over their Tg range was measured. The results revealed a long period of cell preservation at an intermediate RH (55%), with 100% survival observed after 3 months, a loss of 1.24 log colony-forming units/g recorded after 1 year at 25 °C and full preservation of viability at 75 °C for 60 min and at 100 °C and 12% RH for up to 10 min. These findings led us to conclude that dried yeast can resist low or intermediate RH values and elevated temperatures in the devitrified state. Considering the thermal and humidity fluctuations occurring in the yeast environments, we hypothesized that the supercooled state, which occurs immediately above the Tg after rehydration or heating, is a protective state that is involved in the persistence of yeasts at intermediate humidity levels. KEY POINTS: • Yeast survival for months in a supercooled state is observed at room temperature. • Dried yeasts survive a 10-min exposure to 100 °C in the supercooled state. • The supercooled state is suitable for yeast preservation.
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Affiliation(s)
- Pauline Ribert
- Univ. Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000, Dijon, France.,Phileo by Lesaffre, Marcq en Baroeul, France
| | - Sébastien Dupont
- Univ. Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000, Dijon, France
| | - Gaëlle Roudaut
- Univ. Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000, Dijon, France
| | - Laurent Beney
- Univ. Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000, Dijon, France.
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14
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Zubair M, Adams MS, Diederich CJ. Deployable ultrasound applicators for endoluminal delivery of volumetric hyperthermia. Int J Hyperthermia 2021; 38:1188-1204. [PMID: 34376103 DOI: 10.1080/02656736.2021.1936216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
PURPOSE To investigate the design of an endoluminal deployable ultrasound applicator for delivering volumetric hyperthermia to deep tissue sites as a possible adjunct to radiation and chemotherapy. METHOD This study considers an ultrasound applicator consisting of two tubular transducers situated at the end of a catheter assembly, encased within a distensible conical shaped balloon-based reflector that redirects acoustic energy distally into the tissue. The applicator assembly can be inserted endoluminally or laparoscopically in a compact form and expanded after delivery to the target site. Comprehensive acoustic and biothermal simulations and parametric studies were employed in generalized 3D and patient-specific pancreatic head and body tumor models to characterize the acoustic performance and evaluate heating capabilities of the applicator by investigating the device at a range of operating frequencies, tissue acoustic and thermal properties, transducer configurations, power modulation, applicator positioning, and by analyzing the resultant 40, 41, and 43 °C isothermal volumes and penetration depth of the heating volume. Intensity distributions and volumetric temperature contours were calculated to define moderate hyperthermia boundaries. RESULTS Parametric studies demonstrated the frequency selection to control volume and depth of therapeutic heating from 62 to 22 cm3 and 4 to 2.6 cm as frequency ranges from 1 MHz to 4.7 MHz, respectively. Width of the heating profile tracks closely with the aperture. Water cooling within the reflector balloon was effective in controlling temperature to 37 °C maximum within the luminal wall. Patient-specific studies indicated that applicators with extended OD in the range of 3.6-6.2 cm with 0.5-1 cm long and 1 cm OD transducers can heat volumes of 1.1-7 cm3, 3-26 cm3, and 3.3-37.4 cm3 of pancreatic body and head tumors above 43, 41, and 40 °C, respectively. CONCLUSION In silico studies demonstrated the feasibility of combining endoluminal ultrasound with an integrated expandable balloon reflector for delivering volumetric hyperthermia in regions adjacent to body lumens and cavities.
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Affiliation(s)
- Muhammad Zubair
- Thermal Therapy Research Group, Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Matthew S Adams
- Thermal Therapy Research Group, Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Chris J Diederich
- Thermal Therapy Research Group, Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
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15
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Foglietta F, Pinnelli V, Giuntini F, Barbero N, Panzanelli P, Durando G, Terreno E, Serpe L, Canaparo R. Sonodynamic Treatment Induces Selective Killing of Cancer Cells in an In Vitro Co-Culture Model. Cancers (Basel) 2021; 13:cancers13153852. [PMID: 34359753 PMCID: PMC8345649 DOI: 10.3390/cancers13153852] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/24/2021] [Accepted: 07/26/2021] [Indexed: 11/16/2022] Open
Abstract
Sonodynamic Therapy (SDT) is a new anticancer strategy based on ultrasound (US) technique and is derived from photodynamic therapy (PDT); SDT is still, however, far from clinical application. In order to move this therapy forward from bench to bedside, investigations have been focused on treatment selectivity between cancer cells and normal cells. As a result, the effects of the porphyrin activation by SDT on cancer (HT-29) and normal (HDF 106-05) cells were studied in a co-culture evaluating cell cytotoxicity, reactive oxygen species (ROS) production, mitochondrial function and plasma membrane fluidity according to the bilayer sonophore (BLS) theory. While PDT induced similar effects on both HT-29 and HDF 106-05 cells in co-culture, SDT elicited significant cytotoxicity, ROS production and mitochondrial impairment on HT-29 cells only, whereas HDF 106-05 cells were unaffected. Notably, HT-29 and HDF 106-05 showed different cell membrane fluidity during US exposure. In conclusion, our data demonstrate a marked difference between cancer cells and normal cells in co-culture in term of responsiveness to SDT, suggesting that this different behavior can be ascribed to diversity in plasma membrane properties, such as membrane fluidity, according to the BLS theory.
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Affiliation(s)
- Federica Foglietta
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy; (F.F.); (V.P.); (R.C.)
| | - Vanessa Pinnelli
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy; (F.F.); (V.P.); (R.C.)
| | - Francesca Giuntini
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK;
| | - Nadia Barbero
- Department of Chemistry, NIS Interdepartmental Centre and INSTM Reference Centre, University of Torino, 10125 Torino, Italy;
| | - Patrizia Panzanelli
- Department of Neuroscience Rita Levi Montalcini, University of Torino, 10125 Torino, Italy;
| | - Gianni Durando
- National Institute of Metrological Research (INRIM), 10135 Torino, Italy;
| | - Enzo Terreno
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy;
| | - Loredana Serpe
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy; (F.F.); (V.P.); (R.C.)
- Correspondence: ; Tel.: +39-0116706235
| | - Roberto Canaparo
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy; (F.F.); (V.P.); (R.C.)
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16
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Zhang C, Hu C, Sun Y, Zhang X, Wang Y, Fu H, Chen X, Wang Y. Blanching effects of radio frequency heating on enzyme inactivation, physiochemical properties of green peas (Pisum sativum L.) and the underlying mechanism in relation to cellular microstructure. Food Chem 2021; 345:128756. [PMID: 33302106 DOI: 10.1016/j.foodchem.2020.128756] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/26/2020] [Accepted: 11/26/2020] [Indexed: 11/19/2022]
Abstract
Fresh green peas require blanching to terminate enzymatic reaction induced quality deterioration before frozen storage. Radio frequency (RF) heating is a novel way of dry blanching for fruits and vegetables with high processing efficiency. In this study, blanching effects of RF heating on relative activities of lipoxygenase (LOX) and peroxidase (POD), physiochemical properties as well as cellular morphology changes of green peas were investigated. Results showed relative activities of pea LOX and POD reduced to 0.90 ± 0.78% and 1.10 ± 0.71%, respectively at 85 °C by RF heating with an electrode gap 105 mm. Weight loss, color, texture and electrolyte leakage of peas changed significantly with increasing temperature (60-85 °C). Ascorbic acid, chlorophyll and mineral contents had different loss after RF processing and long term heating at 115 mm exacerbated the loss of nutrients. Microstructure features showed the deconstruction of pea cell well and starch granule gelatinization.
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Affiliation(s)
- Caiyue Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chenchen Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yanan Sun
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xueying Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yequn Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hongfei Fu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiangwei Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yunyang Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
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17
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The Potential Role of Exercise-Induced Muscle Damage in Exertional Heat Stroke. Sports Med 2021; 51:863-872. [PMID: 33528800 DOI: 10.1007/s40279-021-01427-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2021] [Indexed: 01/06/2023]
Abstract
Exertional heat stroke (EHS) is a life-threatening condition that affects mainly athletes, military personnel, firefighters, and occupational workers. EHS is frequently observed in non-compensable conditions (where the body is unable to maintain a steady thermal balance) as a result of heavy heat stress and muscle contraction associated with prolonged and strenuous physical and occupational activities, resulting in central nervous system dysfunction followed by multi-organ damage and failure. Since the pathophysiology of EHS is complex and involves multiple organs and systems, any condition that changes the interrelated systems may increase the risk for EHS. It has been suggested that exercise-induced muscle damage (EIMD) can lead to thermoregulatory impairment and systemic inflammation, which could be a potential predisposing factor for EHS. In this review article, we aim to (1) address the evidence of EIMD as a predisposing factor for EHS and (2) propose a possible mechanism of how performing muscle-damaging exercise in the heat may aggravate muscle damage and subsequent risk of EHS and acute kidney injury (AKI). Such an understanding could be meaningful to minimize the risks of EHS and AKI for individuals with muscle damage due to engaging in physical work in hot environments.
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18
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Darren Tan CW, Forsthuber A, Ehmoser EK. Functional proteoliposome-like structure derived from simultaneous evisceration and enucleation of T-lymphoblastoid A3R5.7 cells: A top-down story. Exp Cell Res 2021; 400:112487. [PMID: 33476652 DOI: 10.1016/j.yexcr.2021.112487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 10/22/2022]
Abstract
Structurally-reduced cells and cell-derived structures are powerful tools for membrane studies. Using this approach, we probed whether a cell, without its nucleus and cytoplasm, is still capable of undergoing CD4-mediated membrane fusion. For this, we needed a cell-derived structure, akin to a giant liposome functionalised with CD4 and chemokine receptors. We present a method for the simultaneous removal of cytoplasmic and nuclear material from cells presenting CD4, CCR5, and CXCR4, using Colcemid treatment followed by hypotonic cytolysis, and then enriched using preparative flow cytometry. We show that the resultant cell membrane remains intact, retains presentation of CD4, CCR5, and CXCR4, and is still capable of CD4-mediated membrane fusion with a target cell. Finally, we detail how this protocol was developed, as well as how such samples should be handled for storage and assays. We envision the use of such systems for host-pathogen interaction studies, and the development of targeted delivery vehicles.
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Affiliation(s)
- Cherng-Wen Darren Tan
- University of Natural Resources and Life Sciences Vienna, Department of Nanobiotechnology, Institute for Synthetic Bioarchitectures, Muthgasse 11, 1190, Vienna, Austria.
| | - Andreas Forsthuber
- University of Natural Resources and Life Sciences Vienna, Department of Nanobiotechnology, Institute for Synthetic Bioarchitectures, Muthgasse 11, 1190, Vienna, Austria
| | - Eva-Kathrin Ehmoser
- University of Natural Resources and Life Sciences Vienna, Department of Nanobiotechnology, Institute for Synthetic Bioarchitectures, Muthgasse 11, 1190, Vienna, Austria
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19
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Affiliation(s)
- Wei Wang
- Key Laboratory of Microsystems and Microstructures Manufacturing (Ministry of Education) Harbin Institute of Technology Harbin China
| | - Zhiguang Wu
- Key Laboratory of Microsystems and Microstructures Manufacturing (Ministry of Education) Harbin Institute of Technology Harbin China
| | - Qiang He
- Key Laboratory of Microsystems and Microstructures Manufacturing (Ministry of Education) Harbin Institute of Technology Harbin China
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20
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Lin CY, Chao A, Wu RC, Lee LY, Ueng SH, Tsai CL, Lee YS, Peng MT, Yang LY, Huang HJ, Wang HS, Lai CH. Synergistic effects of pazopanib and hyperthermia against uterine leiomyosarcoma growth mediated by downregulation of histone acetyltransferase 1. J Mol Med (Berl) 2020; 98:1175-1188. [PMID: 32638047 DOI: 10.1007/s00109-020-01888-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/28/2019] [Accepted: 02/11/2020] [Indexed: 02/04/2023]
Abstract
Pazopanib-a multitargeted tyrosine kinase inhibitor with prominent antiangiogenic effects-has shown promise in the treatment of soft-tissue sarcomas. Hyperthermia has been also applied as an adjunctive treatment to chemotherapy for these malignancies. Here, we show that pazopanib and hyperthermia act synergistically in inhibiting uterine leiomyosarcoma (LMS) cell growth. Compared with either treatment alone, the combination of pazopanib and hyperthermia exerted the highest antitumor activity in a xenograft model. Mechanistically, we found that combined treatment with pazopanib and hyperthermia inhibited histone acetyltransferase 1 (HAT1) expression in LMS cells. The Clock element on the HAT1 promoter was critical for pazopanib- and hyperthermia-induced HAT1 downregulation. Inhibition of HAT1-either by pazopanib and hyperthermia or through HAT1 silencing-was mediated by suppression of Clock. Accordingly, Clock protein reconstitution rescued both HAT1 levels and HAT1-mediated histone acetylation. Immunohistochemistry revealed a higher expression of HAT1 in uterine LMS than in leiomyomas (p = 0.007), with high HAT1 expression levels being associated with poor clinical outcomes (p = 0.007). We conclude that pazopanib and hyperthermia exert synergistic effects against LMS growth by inhibiting HAT1. Further preclinical studies on HAT1 as a potential drug target in uterine LMS are warranted, especially in combination with hyperthermia. KEY MESSAGES: Pazopanib and hyperthermia inhibit the growth of leiomyosarcoma. Their combined use inhibits HAT1 expression in leiomyosarcoma cells. The promoter Clock element is required for HAT1 downregulation. HAT1 expression is higher in leiomyosarcoma than in leiomyomas. An increased HAT1 expression is associated with poor clinical outcomes.
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Affiliation(s)
- Chiao-Yun Lin
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, 5 Fushin St., Guishan, Taoyuan, 333, Taiwan
- Gynecologic Cancer Research Center, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan
| | - Angel Chao
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, 5 Fushin St., Guishan, Taoyuan, 333, Taiwan
- Gynecologic Cancer Research Center, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan
| | - Ren-Chin Wu
- Department of Anatomic Pathology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, Taoyuan, Taiwan
| | - Li-Yu Lee
- Department of Anatomic Pathology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, Taoyuan, Taiwan
| | - Shir-Hwa Ueng
- Department of Anatomic Pathology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, Taoyuan, Taiwan
| | - Chia-Lung Tsai
- Genomic Medicine Research Core Laboratory, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan
| | - Yun-Shien Lee
- Genomic Medicine Research Core Laboratory, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan
- Department of Biotechnology, Ming Chuan University, Taoyuan, Taiwan
| | - Meng-Ting Peng
- Department of Medical Oncology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, Taoyuan, Taiwan
| | - Lan-Yan Yang
- Biostatistics Unit, Clinical Trial Center, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan
| | - Huei-Jean Huang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, 5 Fushin St., Guishan, Taoyuan, 333, Taiwan
- Gynecologic Cancer Research Center, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan
| | - Hsin-Shih Wang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, 5 Fushin St., Guishan, Taoyuan, 333, Taiwan.
| | - Chyong-Huey Lai
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center and Chang Gung University, College of Medicine, 5 Fushin St., Guishan, Taoyuan, 333, Taiwan.
- Gynecologic Cancer Research Center, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City, Taiwan.
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21
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Hussein FB, Venkiteshwaran K, Mayer BK. Cell surface-expression of the phosphate-binding protein PstS: System development, characterization, and evaluation for phosphorus removal and recovery. J Environ Sci (China) 2020; 92:129-140. [PMID: 32430116 DOI: 10.1016/j.jes.2020.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/29/2020] [Accepted: 02/12/2020] [Indexed: 06/11/2023]
Abstract
Simultaneous overabundance and scarcity of inorganic phosphate (Pi) is a critical issue driving the development of innovative water/wastewater treatment technologies that not only facilitate Pi removal to prevent eutrophication, but also recover Pi for agricultural reuse. Here, a cell-surface expressed high-affinity phosphate binding protein (PstS) system was developed, and its Pi capture and release potential was evaluated. E. coli was genetically modified to express PstS on its outer membrane using the ice nucleation protein (INP) as an anchoring motif. Verification of protein expression and localization were performed utilizing SDS-polyacrylamide gel electrophoresis (SDS-PAGE), western blot, and outer membrane separation analyses. Cell surface characterization was investigated through acid-base titration, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). These tests provided information on the macromolecular structure and composition of the bacteria surface as well as the proton-exchange properties of the surface functional groups (i.e., pKa values). Phosphate desorption and adsorption batch experiments were conducted to evaluate the effects of temperature, pH, and ionic strength on phosphate capture and release. The PstS surface-displayed cells demonstrated greater potential to release and capture phosphate compared to non-modified cells. Higher temperatures up to 40°C, basic pH conditions (pH = 10.5), and higher ionic strength up to 1.0 mol/L KCl promoted 20%-50% higher phosphate release.
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Affiliation(s)
- Faten B Hussein
- Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, WI, 53233, USA
| | - Kaushik Venkiteshwaran
- Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, WI, 53233, USA
| | - Brooke K Mayer
- Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, WI, 53233, USA.
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22
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Chan LLY, Rice WL, Qiu J. Observation and quantification of the morphological effect of trypan blue rupturing dead or dying cells. PLoS One 2020; 15:e0227950. [PMID: 31978129 PMCID: PMC6980413 DOI: 10.1371/journal.pone.0227950] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/03/2020] [Indexed: 11/19/2022] Open
Abstract
Trypan blue has long been the gold standard for staining dead cell to determine cell viability. The dye is excluded from membrane-intact live cells, but can enter and concentrate in membrane-compromised dead cells, rendering the cells dark blue. Over the years, there has been an understanding that trypan blue is inaccurate for cell viability under 80% without scientific support. We previously showed that trypan blue can alter the morphology of dead cells to a diffuse shape, which can lead to over-estimation of viability. Here, we investigate the origin of the dim and diffuse objects after trypan blue staining. Utilizing image and video acquisition, we show real-time transformation of cells into diffuse objects when stained with trypan blue. The same phenomenon was not observed when staining cells with propidium iodide. We also demonstrate the co-localization of trypan blue and propidium iodide, confirming these diffuse objects as cells that contain nuclei. The videos clearly show immediate cell rupturing after trypan blue contact. The formation of these diffuse objects was monitored and counted over time as cells die outside of the incubator. We hypothesize and demonstrate that rapid water influx may have caused the cells to rupture and disappear. Since some dead cells disappear after trypan blue staining, the total can be under-counted, leading to over-estimation of cell viability. This inaccuracy could affect the outcomes of cellular therapies, which require accurate measurements of immune cells that will be infused back into patients.
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Affiliation(s)
- Leo Li-Ying Chan
- Department of Advanced Technology R&D, Nexcelom Bioscience LLC., Lawrence, Massachusetts, United States of America
- * E-mail:
| | - William L. Rice
- Department of Advanced Technology R&D, Nexcelom Bioscience LLC., Lawrence, Massachusetts, United States of America
| | - Jean Qiu
- Department of Advanced Technology R&D, Nexcelom Bioscience LLC., Lawrence, Massachusetts, United States of America
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Flexible, sticky, and biodegradable wireless device for drug delivery to brain tumors. Nat Commun 2019; 10:5205. [PMID: 31729383 PMCID: PMC6858362 DOI: 10.1038/s41467-019-13198-y] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 10/21/2019] [Indexed: 12/31/2022] Open
Abstract
Implantation of biodegradable wafers near the brain surgery site to deliver anti-cancer agents which target residual tumor cells by bypassing the blood-brain barrier has been a promising method for brain tumor treatment. However, further improvement in the prognosis is still necessary. We herein present novel materials and device technologies for drug delivery to brain tumors, i.e., a flexible, sticky, and biodegradable drug-loaded patch integrated with wireless electronics for controlled intracranial drug delivery through mild-thermic actuation. The flexible and bifacially-designed sticky/hydrophobic device allows conformal adhesion on the brain surgery site and provides spatially-controlled and temporarily-extended drug delivery to brain tumors while minimizing unintended drug leakage to the cerebrospinal fluid. Biodegradation of the entire device minimizes potential neurological side-effects. Application of the device to the mouse model confirms tumor volume suppression and improved survival rate. Demonstration in a large animal model (canine model) exhibited its potential for human application. There is a need to further improve the efficacy of biodegradable wafers used in surgically treated brain tumors. Here, the authors report a flexible, biodegradable wireless device capable of adhesion to surgical site for optimal drug delivery upon mild-thermic actuation and report therapeutic efficacy in mouse and canine tumor models.
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Zhang H, Wang J, Hu M, Li BC, Li H, Chen TT, Ren KF, Ji J, Jing QM, Fu GS. Photothermal-assisted surface-mediated gene delivery for enhancing transfection efficiency. Biomater Sci 2019; 7:5177-5186. [PMID: 31588463 DOI: 10.1039/c9bm01284b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The development of gene therapy puts forward the requirements for efficient delivery of genetic information into diverse cells. However, in some cases of transfection, especially those for transfecting some primary cells and for delivering large size plasmid DNA (pDNA), the existing conventional transfection methods show poor efficiency. How to further improve transfection efficiency in these hard-to-achieve issues remains a crucial challenge. Here, we report a photothermal-assisted surface-mediated gene delivery based on a polydopamine-polyethylenimine (PDA-PEI) surface. The PDA-PEI surface was prepared through PEI-accelerated dopamine polymerization, which showed efficiency in the immobilization of PEI/pDNA polyplexes and remarkable photothermal properties. Upon IR irradiation, we observed improved transfection efficiencies of two important hard-to-achieve transfection issues, namely the transfection of primary endothelial cells, which are kinds of typical hard-to-transfect cells, and the transfection of cells with large-size pDNA. We demonstrate that the increases of transfection efficiency were due to the hyperthermia-induced pDNA release, the local cell membrane disturbance, and the polyplex internalization. This work highlights the importance of local immobilization and release of pDNA to gene deliveries, showing great potential applications in medical devices in the field of gene therapy.
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Affiliation(s)
- He Zhang
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Jing Wang
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Mi Hu
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Bo-Chao Li
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Huan Li
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Ting-Ting Chen
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Ke-Feng Ren
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Jian Ji
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Quan-Min Jing
- General Hospital of Northern Theater Command, Shenyang 110004, China.
| | - Guo-Sheng Fu
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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King MA, Ward MD, Mayer TA, Plamper ML, Madsen CM, Cheuvront SN, Kenefick RW, Leon LR. Influence of prior illness on exertional heat stroke presentation and outcome. PLoS One 2019; 14:e0221329. [PMID: 31430332 PMCID: PMC6701802 DOI: 10.1371/journal.pone.0221329] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/06/2019] [Indexed: 11/18/2022] Open
Abstract
Introduction Precipitating factors that contribute to the severity of exertional heat stroke (EHS) are unclear. The purpose of this study was to determine the effect of prior illness (PI) on EHS severity. Methods We performed a retrospective clinical record review of 179 documented cases of EHS at the Marine Corps Base in Quantico, Virginia. Results Approximately 30% of EHS cases had a medically documented PI. Anthropometrics (height, weight, body mass index) and commonly associated risk factors for EHS (age, number of days in training, wet bulb globe temperature, sleep patterns) did not differ between PI and no illness (NI) groups. PI patients presented with higher maximal rectal core temperatures (40.6 ± 1.0°C vs. 40.3 ± 1.2°C; P = 0.0419), and elevated pulse rates (118.1 ± 16.7 bpm vs. 110.5 ± 24.2 bpm; P = 0.0397). At the point of care, biomarker values were similar between PI and NI groups, with the exception of a trend toward elevated monocytes in those with PI (7.9 ± 2.9% vs 6.7± 2.7%; P = 0.0521). Rate and duration of cooling were similar between PI and NI patients. Conclusion This study indicates that PI has a minimal effect on the patient presentation, severity and treatment outcome of EHS. The results of this study have important implications for military, civilian, and occupational populations who are at risk for EHS.
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Affiliation(s)
- Michelle A. King
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
| | - Matthew D. Ward
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
| | - Thomas A. Mayer
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
| | - Mark L. Plamper
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
| | - Clifford M. Madsen
- John H. Bradley Branch Health Clinic, Marine Corps Base, Quantico, VA, United States of America
| | - Samuel N. Cheuvront
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
| | - Robert W. Kenefick
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
| | - Lisa R. Leon
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States of America
- * E-mail:
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Minaei SE, Khoei S, Khoee S, Vafashoar F, Mahabadi VP. In vitro anti-cancer efficacy of multi-functionalized magnetite nanoparticles combining alternating magnetic hyperthermia in glioblastoma cancer cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:575-587. [DOI: 10.1016/j.msec.2019.04.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 12/13/2022]
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Lu Y, Palanikumar L, Choi ES, Huskens J, Ryu JH, Wang Y, Pang W, Duan X. Hypersound-Enhanced Intracellular Delivery of Drug-Loaded Mesoporous Silica Nanoparticles in a Non-Endosomal Pathway. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19734-19742. [PMID: 31090387 DOI: 10.1021/acsami.9b02447] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The intracellular delivery efficiency of drug-loaded nanocarriers is often limited by biological barriers arising from the plasma membrane and the cell interior. In this work, the entering of doxorubicin (Dox)-loaded mesoporous silica nanoparticles (MSNs) into the cytoplasm was acoustically enhanced through direct penetration with the assistance of hypersound of gigahertz (GHz) frequency. Both fluorescence and cell viability measurements revealed that the therapeutic efficacy of Dox-loaded MSNs was significantly improved by tuning the power and duration of hypersound on demand with a nanoelectromechanical resonator. Mechanism studies with inhibitors illustrated that the membrane defects induced by the hypersound-triggered GHz acoustic streaming facilitated the Dox-loaded MSNs of 100-200 nm to directly penetrate through the cell membrane instead of via the traditional endocytosis, which highly increased the delivery efficiency by avoiding the formation of endosomes. This acoustic method enables the drug carriers to overcome biological barriers of the cell membrane and the endosomes without the limitation of carrier materials, which provides a versatile way of enhanced drug delivery for biomedical applications.
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Affiliation(s)
- Yao Lu
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology , University of Twente , Enschede 7500 AE , The Netherlands
| | - Loganathan Palanikumar
- Department of Chemistry, School of Natural Science , Ulsan National Institutes of Science and Technology (UNIST) , Ulsan 44919 , Korea
| | - Eun Seong Choi
- Department of Chemistry, School of Natural Science , Ulsan National Institutes of Science and Technology (UNIST) , Ulsan 44919 , Korea
| | - Jurriaan Huskens
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology , University of Twente , Enschede 7500 AE , The Netherlands
| | - Ja-Hyoung Ryu
- Department of Chemistry, School of Natural Science , Ulsan National Institutes of Science and Technology (UNIST) , Ulsan 44919 , Korea
| | - Yanyan Wang
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Xuexin Duan
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
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Abstract
Despite an overall improvement in survival rates for cancer, certain resistant forms of the disease still impose a significant burden on patients and healthcare systems. Standard chemotherapy in these cases is often ineffective and/or gives rise to severe side effects. Targeted delivery of chemotherapeutics could improve both tumour response and patient experience. Hence, there is an urgent need to develop effective methods for this. Ultrasound is an established technique in both diagnosis and therapy. Its use in conjunction with microbubbles is being actively researched for the targeted delivery of small-molecule drugs. In this review, we cover the methods by which ultrasound and microbubbles can be used to overcome tumour barriers to cancer therapy.
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Stewart MP, Langer R, Jensen KF. Intracellular Delivery by Membrane Disruption: Mechanisms, Strategies, and Concepts. Chem Rev 2018; 118:7409-7531. [PMID: 30052023 PMCID: PMC6763210 DOI: 10.1021/acs.chemrev.7b00678] [Citation(s) in RCA: 399] [Impact Index Per Article: 66.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Intracellular delivery is a key step in biological research and has enabled decades of biomedical discoveries. It is also becoming increasingly important in industrial and medical applications ranging from biomanufacture to cell-based therapies. Here, we review techniques for membrane disruption-based intracellular delivery from 1911 until the present. These methods achieve rapid, direct, and universal delivery of almost any cargo molecule or material that can be dispersed in solution. We start by covering the motivations for intracellular delivery and the challenges associated with the different cargo types-small molecules, proteins/peptides, nucleic acids, synthetic nanomaterials, and large cargo. The review then presents a broad comparison of delivery strategies followed by an analysis of membrane disruption mechanisms and the biology of the cell response. We cover mechanical, electrical, thermal, optical, and chemical strategies of membrane disruption with a particular emphasis on their applications and challenges to implementation. Throughout, we highlight specific mechanisms of membrane disruption and suggest areas in need of further experimentation. We hope the concepts discussed in our review inspire scientists and engineers with further ideas to improve intracellular delivery.
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Affiliation(s)
- Martin P. Stewart
- Department of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, USA
- The Koch Institute for Integrative Cancer Research,
Massachusetts Institute of Technology, Cambridge, USA
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, USA
- The Koch Institute for Integrative Cancer Research,
Massachusetts Institute of Technology, Cambridge, USA
| | - Klavs F. Jensen
- Department of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, USA
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Kaddah S, Khreich N, Kaddah F, Khrouz L, Charcosset C, Greige-Gerges H. Corticoids modulate liposome membrane fluidity and permeability depending on membrane composition and experimental protocol design. Biochimie 2018; 153:33-45. [PMID: 29935242 DOI: 10.1016/j.biochi.2018.06.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/15/2018] [Indexed: 01/22/2023]
Abstract
Given that literature data may give inconsistent results on the effect of a drug on lipid membrane properties, this work aims to investigate the impact of the liposome composition and experimental protocol design on glucocorticoids (GRs: cortisol, cortisone, fludrocortisone acetate, methylprednisolone, prednisolone and prednisone)-modulating membrane fluidity and permeability. GRs-loaded liposomes consisting of dipalmitoylphosphatidylcholine (DPPC) and cholesterol (CHOL) were prepared by reverse phase evaporation technique (REV) at DPPC:CHOL:GR molar ratios of 100:100:2.5, and 100:100:10. The formulations were characterized for their size and homogeneity, encapsulation efficiency and loading rates of GRs, incorporation rates and loading rates of DPPC and CHOL. Changes in DPPC membrane fluidity (CHOL% 0, 10, 20, 30 and 100) after exposure to methylprednisolone were monitored by using 5- and 16-doxyl stearic acids (DSA) as spin probes. For permeability studies, the above-mentioned GRs-loaded liposomes and the preformed liposomes exposed to GRs (2.5 mol%) were compared for the leakage of an encapsulated fluorescent dye, sulforhodamine B (SRB), at 37 °C in buffer (pH 7.5) containing NaCl. The SRB release kinetics were analyzed by the Higuchi model for two release phases (from 0 to 10 h, and from 10 to 48 h). All formulations exhibited a monodispersed size distribution of liposomes with a mean particle value close to 0.4 μm, also the DPPC and CHOL were highly incorporated (>95%). High loading rate values of DPPC and CHOL were also obtained. Except for fludrocortisone acetate (51%) and prednisolone (77%), high loading rate values of GRs were obtained (>81%). Fluidity and permeability studies showed that the GR concentration, CHOL content, experimental protocol design including the period of incubation represent critical parameters to be considered in analyzing the effect of drugs on the membrane properties.
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Affiliation(s)
- Samar Kaddah
- Bioactive Molecules Research Laboratory, Faculty of Sciences, Lebanese University, Lebanon; Laboratoire d'Automatique et de Génie des Procédés (LAGEP), Université Claude Bernard, Lyon 1, France
| | - Nathalie Khreich
- Bioactive Molecules Research Laboratory, Faculty of Sciences, Lebanese University, Lebanon
| | - Fouad Kaddah
- École Supérieure d'ingénieurs de Beyrouth, Université Saint Joseph, Beyrouth, Mar Roukoz-Dekwaneh, Lebanon
| | - Lhoussain Khrouz
- Laboratoire de Chimie, École Normale Supérieure de Lyon (ENS), Université Claude Bernard, Lyon 1, France
| | - Catherine Charcosset
- Laboratoire d'Automatique et de Génie des Procédés (LAGEP), Université Claude Bernard, Lyon 1, France
| | - Hélène Greige-Gerges
- Bioactive Molecules Research Laboratory, Faculty of Sciences, Lebanese University, Lebanon.
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Liu F, Roy P, Shao Q, Jiang C, Choi J, Chung C, Mehra D, Bischof JC. The Role of Protein Loss and Denaturation in Determining Outcomes of Heating, Cryotherapy, and Irreversible Electroporation on Cardiomyocytes. J Biomech Eng 2018; 140:2673311. [DOI: 10.1115/1.4039375] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Indexed: 01/04/2023]
Abstract
Atrial fibrillation (AF) currently affects millions of people in the U.S. alone. Focal therapy is an increasingly attractive treatment for AF that avoids the debilitating effects of drugs for disease control. Perhaps the most widely used focal therapy for AF is heat-based radiofrequency (heating), although cryotherapy (cryo) is rapidly replacing it due to a reduction in side effects and positive clinical outcomes. A third focal therapy, irreversible electroporation (IRE), is also being considered in some settings. This study was designed to help guide treatment thresholds and compare mechanism of action across heating, cryo, and IRE. Testing was undertaken on HL-1 cells, a well-established cardiomyocyte cell line, to assess injury thresholds for each treatment method. Cell viability, as assessed by Hoechst and propidium iodide (PI) staining, was found to be minimal after exposure to temperatures ≤−40 °C (cryo), ≥60 °C (heating), and when field strengths ≥1500 V/cm (IRE) were used. Viability was then correlated to protein denaturation fraction (PDF) as assessed by Fourier transform infrared (FTIR) spectroscopy, and protein loss fraction (PLF) as assessed by bicinchoninic acid (BCA) assay after the three treatments. These protein changes were assessed both in the supernatant and the pellet of cell suspensions post-treatment. We found that dramatic viability loss (≥50%) correlated strongly with ≥12% protein change (PLF, PDF or a combination of the two) in every focal treatment. These studies help in defining both cellular thresholds and protein-based mechanisms of action that can be used to improve focal therapy application for AF.
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Affiliation(s)
- Feng Liu
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455 e-mail:
| | - Priyatanu Roy
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455 e-mail:
| | - Qi Shao
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455
- Institute for Engineering in Medicine, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455 e-mail:
| | - Chunlan Jiang
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455 e-mail:
| | - Jeunghwan Choi
- Department of Mechanical Engineering, University of Minnesota, Slay Hall, Library Drive, Greenville, NC 27858
- Department of Engineering, East Carolina University, Slay Hall, Library Drive, Greenville, NC 27858 e-mail:
| | - Connie Chung
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455 e-mail:
| | - Dushyant Mehra
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455 e-mail:
| | - John C. Bischof
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455
- Institute for Engineering in Medicine, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455
- Department of Biomedical Engineering, University of Minnesota, Nils Hasselmo Hall, 312 Church St. SE, Minneapolis, MN 55455 e-mail:
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Chen H, McFaul C, Titushkin I, Cho M, Lee R. Surfactant Copolymer Annealing of Chemically Permeabilized Cell Membranes. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018; 4:1-10. [PMID: 30906849 DOI: 10.1007/s40883-017-0044-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Structural breakdown of the cell membrane is a primary mediator in trauma induced tissue necrosis. When membrane disruption exceeds intrinsic membrane sealing processes, biocompatible multi-block amphiphilic copolymer surfactants such as Poloxamer 188 (P188) have been found to be effective in catalyze or augment sealing. Although in living cells copolymer induced sealing of membrane defects has been detected by changes in membrane transport properties, it has not been directly imaged. In this project we used Atomic force microscopy (AFM) to directly image saponin permeabilized and poloxamer sealed plasma membranes of monolayer cultured MDCK and 3T3 fibroblasts. AFM image analysis resulted in the density and diameter ranges for membrane indentations per 5×5 μm area. For control, saponin lysed, and P188 treatment of saponin lysed membranes, the supra-threshold indentation density was 3.6 ± 2.8, 13.8 ± 6.7, and 4.9 ± 3.3/cell, respectively. These results indicated that P188 catalyzed reduction in size of AFM indentations which correlated with increase cell survival. This evidence confirm that biocompatible surfactant P188 augment natural cell membrane sealing capability when intrinsic processes are incapable alone.
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Affiliation(s)
- Hongfeng Chen
- Department of Surgery, University of Chicago, Chicago, IL, USA, 60637
| | - Colin McFaul
- Department of Surgery, University of Chicago, Chicago, IL, USA, 60637
| | - Igor Titushkin
- Department of Surgery, University of Illinois at Chicago, Chicago IL, USA, 60605
| | - Michael Cho
- Department of Surgery, University of Illinois at Chicago, Chicago IL, USA, 60605
| | - Raphael Lee
- Department of Surgery, University of Chicago, Chicago, IL, USA, 60637
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Enhanced gap junction intercellular communication inhibits catabolic and pro-inflammatory responses in tenocytes against heat stress. J Cell Commun Signal 2017; 11:369-380. [PMID: 28601938 DOI: 10.1007/s12079-017-0397-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 05/28/2017] [Indexed: 12/17/2022] Open
Abstract
Elevation of tendon core temperature during severe activity is well known. However, its effects on tenocyte function have not been studied in detail. The present study tested a hypothesis that heat stimulation upregulates tenocyte catabolism, which can be modulated by the inhibition or the enhancement of gap junction intercellular communication (GJIC). Tenocytes isolated from rabbit Achilles tendons were subjected to heat stimulation at 37 °C, 41 °C or 43 °C for 30 min, and changes in cell viability, gene expressions and GJIC were examined. It was found that GJIC exhibited no changes by the stimulation even at 43 °C, but cell viability was decreased and catabolic and proinflammatory gene expressions were upregulated. Inhibition of GJIC demonstrated further upregulated catabolic and proinflammatory gene expressions. In contrast, enhanced GJIC, resulting from forced upregulation of connexin 43 gene, counteracted the heat-induced upregulation of catabolic and proinflammatory genes. These findings suggest that the temperature rise in tendon core could upregulate catabolic and proinflammatory activities, potentially leading to the onset of tendinopathy, and such upregulations could be suppressed by the enhancement of GJIC. Therefore, to prevent tendon injury at an early stage from becoming chronic injury, tendon core temperature and GJIC could be targets for post-activity treatments.
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Poellmann MJ, Lee RC. Repair and Regeneration of the Wounded Cell Membrane. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2017. [DOI: 10.1007/s40883-017-0031-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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35
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Zhang Z, Wang Y, Zhang H, Tang Z, Liu W, Lu Y, Wang Z, Yang H, Pang W, Zhang H, Zhang D, Duan X. Hypersonic Poration: A New Versatile Cell Poration Method to Enhance Cellular Uptake Using a Piezoelectric Nano-Electromechanical Device. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602962. [PMID: 28195400 DOI: 10.1002/smll.201602962] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 12/18/2016] [Indexed: 06/06/2023]
Abstract
Efficient delivery of genes and therapeutic agents to the interior of the cell is critical for modern biotechnology. Herein, a new type of chemical-free cell poration method-hypersonic poration-is developed to improve the cellular uptake, especially the nucleus uptake. The hypersound (≈GHz) is generated by a designed piezoelectric nano-electromechanical resonator, which directly induces normal/shear stress and "molecular bombardment" effects on the bilayer membranes, and creates reversible temporal nanopores improving the membrane permeability. Both theory analysis and cellular uptake experiments of exogenous compounds prove the high delivery efficiency of hypersonic poration. Since target molecules in cells are accumulated with the treatment, the delivered amount can be controlled by tuning the treatment time. Furthermore, owing to the intrinsic miniature of the resonator, localized drug delivery at a confined spatial location and tunable arrays of the resonators that are compatible with multiwell plate can be achieved. The hypersonic poration method shows great delivery efficacy combined with advantage of scalability, tunable throughput, and simplification in operation and provides a potentially powerful strategy in the field of molecule delivery, cell transfection, and gene therapy.
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Affiliation(s)
- Zhixin Zhang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Yanyan Wang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
| | - Hongxiang Zhang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Zifan Tang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Wenpeng Liu
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Yao Lu
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Zefang Wang
- School of Life Sciences, Tianjin University, Tianjin, 300072, China
| | - Haitao Yang
- School of Life Sciences, Tianjin University, Tianjin, 300072, China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China
| | - Hao Zhang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
| | - Daihua Zhang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
| | - Xuexin Duan
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
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Yang Y, Ballent W, Mayer BK. High-affinity phosphate-binding protein (PBP) for phosphorous recovery: proof of concept using recombinantEscherichia coli. FEMS Microbiol Lett 2016; 363:fnw240. [DOI: 10.1093/femsle/fnw240] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2016] [Indexed: 11/13/2022] Open
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Stewart MP, Sharei A, Ding X, Sahay G, Langer R, Jensen KF. In vitro and ex vivo strategies for intracellular delivery. Nature 2016; 538:183-192. [DOI: 10.1038/nature19764] [Citation(s) in RCA: 537] [Impact Index Per Article: 67.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 07/11/2016] [Indexed: 12/11/2022]
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Espinosa A, Silva AKA, Sánchez‐Iglesias A, Grzelczak M, Péchoux C, Desboeufs K, Liz‐Marzán LM, Wilhelm C. Cancer Cell Internalization of Gold Nanostars Impacts Their Photothermal Efficiency In Vitro and In Vivo: Toward a Plasmonic Thermal Fingerprint in Tumoral Environment. Adv Healthc Mater 2016; 5:1040-8. [PMID: 26990061 DOI: 10.1002/adhm.201501035] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 01/22/2016] [Indexed: 11/08/2022]
Abstract
Gold nanoparticles are prime candidates for cancer thermotherapy. However, while the ultimate target for nanoparticle-mediated photothermal therapy is the cancer cell, heating performance has not previously been evaluated in the tumoral environment. A systematic investigation of gold nanostar heat-generating efficiency in situ is presented: not only in cancer cells in vitro but also after intratumoral injection in vivo. It is demonstrated that (i) in aqueous dispersion, heat generation is governed by particle size and exciting laser wavelength; (ii) in cancer cells in vitro, heat generation is still very efficient, but irrespective of both particle size and laser wavelength; and (iii) heat generation by nanostars injected into tumors in vivo evolves with time, as the nanostars are trafficked from the extracellular matrix into endosomes. The plasmonic heating response thus serves as a signature of nanoparticle internalization in cells, bringing the ultimate goal of nanoparticle-mediated photothermal therapy a step closer.
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Affiliation(s)
- Ana Espinosa
- Laboratoire Matière et Systèmes Complexes (MSC) UMR 7057 CNRS and Université Paris Diderot 75205 Paris cedex 13 France
| | - Amanda K. A. Silva
- Laboratoire Matière et Systèmes Complexes (MSC) UMR 7057 CNRS and Université Paris Diderot 75205 Paris cedex 13 France
| | - Ana Sánchez‐Iglesias
- BioNanoPlasmonics Laboratory CIC biomaGUNE Paseo de Miramón 182 20009 Donostia San Sebastián Spain
| | - Marek Grzelczak
- BioNanoPlasmonics Laboratory CIC biomaGUNE Paseo de Miramón 182 20009 Donostia San Sebastián Spain
- Ikerbasque Basque Foundation for Science 48013 Bilbao Spain
| | - Christine Péchoux
- GABI INRA – MIMA2‐MET AgroParisTech Université Paris‐Saclay 78350 Jouy‐en‐Josas France
| | - Karine Desboeufs
- LISA CNRS UMR 7583 Université Paris‐Diderot et Université Paris‐Est Créteil, 61 av du Général de Gaulles 94010 Créteil France
| | - Luis M. Liz‐Marzán
- BioNanoPlasmonics Laboratory CIC biomaGUNE Paseo de Miramón 182 20009 Donostia San Sebastián Spain
- Ikerbasque Basque Foundation for Science 48013 Bilbao Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER‐BBN) 50018 Aragon Spain
| | - Claire Wilhelm
- Laboratoire Matière et Systèmes Complexes (MSC) UMR 7057 CNRS and Université Paris Diderot 75205 Paris cedex 13 France
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Buttino I, Hwang JS, Romano G, Sun CK, Liu TM, Pellegrini D, Gaion A, Sartori D. Detection of malformations in sea urchin plutei exposed to mercuric chloride using different fluorescent techniques. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 123:72-80. [PMID: 26254716 DOI: 10.1016/j.ecoenv.2015.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 07/22/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
Embryos of Mediterranean sea urchin Paracentrotus lividus and subtropical Echinometra mathaei were exposed to 5,10, 15 and 20µgL(-1), and to 1, 2, 3 and 4µgL(-1) mercuric chloride (HgCl2), respectively. The effective concentration (EC50) inducing malformation in 50% of 4-arm pluteus stage (P4) was 16.14µgL(-1) for P. lividus and 2.41µgL(-1) for E. mathaei. Two-photon (TP), second (SHG) and third harmonic generation (THG) microscopy techniques, TUNEL staining, propidium iodide (PI) and Hoechst 33342 probes were used to detect light signals or to stain apoptotic and necrotic cells in fixed and alive plutei. Signals were detected differently in the two species: TP fluorescence, commonly associated with apoptotic cells, did not increase with increasing HgCl2 concentrations in P. lividus and in fact, the TUNEL did not reveal induction of apoptosis. PI fluorescence increased in P. lividus in a dose-dependent manner, suggesting a loss of cell permeability. In E. mathaei plutei TP fluorescence increased at increasing HgCl2 concentrations. THG microscopy revealed skeletal rods in both species. Different fluorescent techniques, used in this study, are proposed as early-warning systems to visualize malformations and physiological responses in sea urchin plutei.
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Affiliation(s)
- Isabella Buttino
- Istituto Superiore per la Protezione e la Ricerca Ambientale, ISPRA_ STS-Livorno, Piazzale dei marmi 12, 57123, Italy.
| | - Jiang-Shiou Hwang
- Institute of Marine Biology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Giovanna Romano
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | - Chi-Kuang Sun
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Tzu-Ming Liu
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - David Pellegrini
- Istituto Superiore per la Protezione e la Ricerca Ambientale, ISPRA_ STS-Livorno, Piazzale dei marmi 12, 57123, Italy
| | - Andrea Gaion
- Istituto Superiore per la Protezione e la Ricerca Ambientale, ISPRA_ STS-Livorno, Piazzale dei marmi 12, 57123, Italy
| | - Davide Sartori
- Istituto Superiore per la Protezione e la Ricerca Ambientale, ISPRA_ STS-Livorno, Piazzale dei marmi 12, 57123, Italy; CAISIAL, Academic Centre for Innovation and Development in the Food Industry, 80055 Portici (Na), Italy
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Fay BL, Melamed JR, Day ES. Nanoshell-mediated photothermal therapy can enhance chemotherapy in inflammatory breast cancer cells. Int J Nanomedicine 2015; 10:6931-41. [PMID: 26609231 PMCID: PMC4644159 DOI: 10.2147/ijn.s93031] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Nanoshell-mediated photothermal therapy (PTT) is currently being investigated as a standalone therapy for the treatment of cancer. The cellular effects of PTT include loss of membrane integrity, so we hypothesized that nanoshell-mediated PTT could potentiate the cytotoxicity of chemotherapy by improving drug accumulation in cancer cells. In this work, we validated our hypothesis using doxorubicin as a model drug and SUM149 inflammatory breast cancer cells as a model cancer subtype. In initial studies, SUM149 cells were exposed to nano-shells and near-infrared light and then stained with ethidium homodimer-1, which is excluded from cells with an intact plasma membrane. The results confirmed that nanoshell-mediated PTT could increase membrane permeability in SUM149 cells. In complementary experiments, SUM149 cells treated with nanoshells, near-infrared light, or a combination of the two to yield low-dose PTT were exposed to fluorescent rhodamine 123. Analyzing rhodamine 123 fluorescence in cells via flow cytometry confirmed that increased membrane permeability caused by PTT could enhance drug accumulation in cells. This was validated using fluorescence microscopy to assess intracellular distribution of doxorubicin. In succeeding experiments, SUM149 cells were exposed to subtherapeutic levels of doxorubicin, low-dose PTT, or a combination of the two treatments to determine whether the additional drug uptake induced by PTT is sufficient to enhance cell death. Analysis revealed minimal loss of viability relative to controls in cells exposed to subtherapeutic levels of doxorubicin, 15% loss of viability in cells exposed to low-dose PTT, and 35% loss of viability in cells exposed to combination therapy. These data indicate that nanoshell-mediated PTT is a viable strategy to potentiate the effects of chemotherapy and warrant further investigation of this approach using other drugs and cancer subtypes.
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Affiliation(s)
- Brittany L Fay
- Biomedical Engineering, University of Delaware, Newark, DE, USA
| | | | - Emily S Day
- Biomedical Engineering, University of Delaware, Newark, DE, USA
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41
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Khattak WA, Ullah MW, Ul-Islam M, Khan S, Kim M, Kim Y, Park JK. Developmental strategies and regulation of cell-free enzyme system for ethanol production: a molecular prospective. Appl Microbiol Biotechnol 2014; 98:9561-78. [PMID: 25359472 DOI: 10.1007/s00253-014-6154-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/09/2014] [Accepted: 10/12/2014] [Indexed: 10/24/2022]
Abstract
Most biomanufacturing systems developed for the production of biocommodities are based on whole-cell systems. However, with the advent of innovative technologies, the focus has shifted from whole-cell towards cell-free enzyme system. Since more than a century, researchers are using the cell-free extract containing the required enzymes and their respective cofactors in order to study the fundamental aspects of biological systems, particularly fermentation. Although yeast cell-free enzyme system is known since long ago, it is rarely been studied and characterized in detail. In this review, we hope to describe the major pitfalls encountered by whole-cell system and introduce possible solutions to them using cell-free enzyme systems. We have discussed the glycolytic and fermentative pathways and their regulation at both transcription and translational levels. Moreover, several strategies employed for development of cell-free enzyme system have been described with their potential merits and shortcomings associated with these developmental approaches. We also described in detail the various developmental approaches of synthetic cell-free enzyme system such as compartmentalization, metabolic channeling, protein fusion, and co-immobilization strategies. Additionally, we portrayed the novel cell-free enzyme technologies based on encapsulation and immobilization techniques and their development and commercialization. Through this review, we have presented the basics of cell-free enzyme system, the strategies involved in development and operation, and the advantages over conventional processes. Finally, we have addressed some potential directions for the future development and industrialization of cell-free enzyme system.
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Affiliation(s)
- Waleed Ahmad Khattak
- Department of Chemical Engineering, Kyungpook National University, Daegu, 7020-701, Korea
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Ullah MW, Khattak WA, Ul-Islam M, Khan S, Park JK. Bio-ethanol production through simultaneous saccharification and fermentation using an encapsulated reconstituted cell-free enzyme system. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.08.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hoelzle RD, Virdis B, Batstone DJ. Regulation mechanisms in mixed and pure culture microbial fermentation. Biotechnol Bioeng 2014; 111:2139-54. [DOI: 10.1002/bit.25321] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 05/19/2014] [Accepted: 06/25/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Robert D. Hoelzle
- Advanced Water Management Centre; The University of Queensland; Brisbane QLD 4072 Australia
| | - Bernardino Virdis
- Advanced Water Management Centre; The University of Queensland; Brisbane QLD 4072 Australia
- Centre for Microbial Electrosynthesis; The University of Queensland; Brisbane QLD 4072 Australia
| | - Damien J. Batstone
- Advanced Water Management Centre; The University of Queensland; Brisbane QLD 4072 Australia
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Muñoz-Páez KM, Poggi-Varaldo HM, García-Mena J, Ponce-Noyola MT, Ramos-Valdivia AC, Barrera-Cortés J, Robles-González IV, Ruiz-Ordáz N, Villa-Tanaca L, Rinderknecht-Seijas N. Cheese whey as substrate of batch hydrogen production: effect of temperature and addition of buffer. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2014; 32:434-440. [PMID: 24821747 DOI: 10.1177/0734242x14527333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The aim of this work was to evaluate the effect of buffer addition and process temperature (ambient and 35°C) on H2 production in batch fermentation of cheese whey (CW). When the H2 production reached a plateau, the headspace of the reactors were flushed with N2 and reactors were re-incubated. Afterwards, only the reactors with phosphate buffer showed a second cycle of H2 production and 48% more H2 was obtained. The absence of a second cycle in non-buffered reactors could be related to a lower final pH than in the buffered reactors; the low pH could drive the fermentation to solvents production. Indeed a high solvent production was observed in non-buffered bioreactors as given by low ρ ratios (defined as the ratio between sum of organic acid production and sum of solvents production). Regarding the process temperatures, no significant difference between the H2 production of reactors incubated at ambient temperature and at 35°C was described. After flushing the headspace of bioreactors with N2 at the end of the second cycle, the H2 production did not resume (in all reactors).
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Affiliation(s)
- K M Muñoz-Páez
- 1Environmental Biotechnology and Renewable Energies R&D Group, Department Biotechnology and Bioengineering, CINVESTAV-IPN, México, México
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45
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Browning RJ, Rajkumar V, Pedley RB, Eckersley RJ, Blower PJ. Prospects for enhancement of targeted radionuclide therapy of cancer using ultrasound. J Labelled Comp Radiopharm 2014; 57:279-84. [PMID: 24347456 DOI: 10.1002/jlcr.3157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 10/29/2013] [Indexed: 01/18/2023]
Abstract
Ultrasound-mediated drug delivery is a promising means of enhancing delivery, distribution and effectiveness of drugs within tumours. In this review, prospects for exploiting ultrasound to improve the tumour delivery and distribution of radiolabelled antibodies for radioimmunotherapy and to overcome barriers imposed by tumour microenvironment are discussed.
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Affiliation(s)
- Richard J Browning
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, 4th Floor Lambeth Wing, London, SE1 9EH, UK
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46
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Tatini F, Landini I, Scaletti F, Massai L, Centi S, Ratto F, Nobili S, Romano G, Fusi F, Messori L, Mini E, Pini R. Size dependent biological profiles of PEGylated gold nanorods. J Mater Chem B 2014; 2:6072-6080. [DOI: 10.1039/c4tb00991f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interactions with proteins, cytotoxicity and blood compatibility of PEGylated gold nanorods are reviewed as a function of particle size.
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Affiliation(s)
- Francesca Tatini
- Institute of Applied Physics “Nello Carrara”
- National Research Council
- Sesto Fiorentino, 50019 Italy
| | - Ida Landini
- Dept. of Experimental and Clinical Medicine
- University of Florence
- Firenze, 50139 Italy
| | - Federica Scaletti
- Dept. of Chemistry “Ugo Shiff”
- University of Florence
- Sesto Fiorentino, 50019 Italy
| | - Lara Massai
- Dept. of Chemistry “Ugo Shiff”
- University of Florence
- Sesto Fiorentino, 50019 Italy
| | - Sonia Centi
- Dept. of Experimental and Clinical Biomedical Sciences
- University of Florence
- Firenze, 50139 Italy
| | - Fulvio Ratto
- Institute of Applied Physics “Nello Carrara”
- National Research Council
- Sesto Fiorentino, 50019 Italy
| | - Stefania Nobili
- Dept. of Experimental and Clinical Medicine
- University of Florence
- Firenze, 50139 Italy
| | - Giovanni Romano
- Dept. of Experimental and Clinical Biomedical Sciences
- University of Florence
- Firenze, 50139 Italy
| | - Franco Fusi
- Dept. of Experimental and Clinical Biomedical Sciences
- University of Florence
- Firenze, 50139 Italy
| | - Luigi Messori
- Dept. of Chemistry “Ugo Shiff”
- University of Florence
- Sesto Fiorentino, 50019 Italy
| | - Enrico Mini
- Dept. of Experimental and Clinical Medicine
- University of Florence
- Firenze, 50139 Italy
| | - Roberto Pini
- Institute of Applied Physics “Nello Carrara”
- National Research Council
- Sesto Fiorentino, 50019 Italy
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Rodríguez-Velázquez E, Silva M, Taboada P, Mano JF, Suárez-Quintanilla D, Alatorre-Meda M. Enhanced Cell Affinity of Chitosan Membranes Mediated by Superficial Cross-Linking: A Straightforward Method Attainable by Standard Laboratory Procedures. Biomacromolecules 2013; 15:291-301. [DOI: 10.1021/bm401541v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - João F Mano
- 3B’s
Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of
the European Institute of Excellence on Tissue Engineering and Regenerative
Medicine, AvePark, Zona Industrial
da Gandra, S. Claudio do Barco, 4806−909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, Braga/Guimarães, Portugal
| | - David Suárez-Quintanilla
- International
Orthodontic Center (IOC), Avenida de
A Coruña 6, E-15706 Santiago de Compostela, Spain
| | - Manuel Alatorre-Meda
- 3B’s
Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of
the European Institute of Excellence on Tissue Engineering and Regenerative
Medicine, AvePark, Zona Industrial
da Gandra, S. Claudio do Barco, 4806−909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, Braga/Guimarães, Portugal
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48
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Khattak WA, Khan T, Ha JH, Ul-Islam M, Kang MK, Park JK. Enhanced production of bioethanol from waste of beer fermentation broth at high temperature through consecutive batch strategy by simultaneous saccharification and fermentation. Enzyme Microb Technol 2013; 53:322-30. [DOI: 10.1016/j.enzmictec.2013.07.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 06/24/2013] [Accepted: 07/12/2013] [Indexed: 11/15/2022]
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49
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Hood RL, Andriani RT, Emch S, Robertson JL, Rylander CG, Rossmeisl JH. Fiberoptic microneedle device facilitates volumetric infusate dispersion during convection-enhanced delivery in the brain. Lasers Surg Med 2013; 45:418-26. [PMID: 23861185 DOI: 10.1002/lsm.22156] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2013] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVES A fiberoptic microneedle device (FMD) was designed and fabricated for the purpose of enhancing the volumetric dispersal of macromolecules delivered to the brain through convection-enhanced delivery (CED) by concurrent delivery of sub-lethal photothermal hyperthermia. This study's objective was to demonstrate enhanced dispersal of fluid tracer molecules through co-delivery of 1,064 nm laser energy in an in vivo rodent model. MATERIALS AND METHODS FMDs capable of co-delivering fluids and laser energy through a single light-guiding capillary tube were fabricated. FMDs were stereotactically inserted symmetrically into both cerebral hemispheres of 16 anesthetized rats to a depth of 1.5 mm. Laser irradiation (1,064 nm) at 0 (control), 100, and 200 mW was administered concurrently with CED infusions of liposomal rhodamine (LR) or gadolinium-Evans blue-serum albumin conjugated complex (Gd-EBA) at a flow rate of 0.1 µl/min for 1 hour. Line pressures were monitored during the infusions. Rodents were sacrificed immediately following infusion and their brains were harvested, frozen, and serially cryosectioned for histopathologic and volumetric analyses. RESULTS Analysis by ANOVA methods demonstrated that co-delivery enhanced volumetric dispersal significantly, with measured volumes of 15.8 ± 0.6 mm(3) for 100 mW compared to 10.0 ± 0.4 mm(3) for its fluid only control and 18.0 ± 0.3 mm(3) for 200 mW compared to 10.3 ± 0.7 mm(3) for its fluid only control. Brains treated with 200 mW co-delivery exhibited thermal lesions, while 100 mW co-deliveries were associated with preservation of brain cytoarchitecture. CONCLUSION Both lethal and sub-lethal photothermal hyperthermia substantially increase the rate of volumetric dispersal in a 1 hour CED infusion. This suggests that the FMD co-delivery method could reduce infusion times and the number of catheter insertions into the brain during CED procedures.
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Affiliation(s)
- R Lyle Hood
- School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, 24061
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50
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Mussino F, Pozzolini M, Valisano L, Cerrano C, Benatti U, Giovine M. Primmorphs cryopreservation: a new method for long-time storage of sponge cells. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2013; 15:357-367. [PMID: 23151942 DOI: 10.1007/s10126-012-9490-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 10/01/2012] [Indexed: 06/01/2023]
Abstract
The possibility to cryopreserve cells allows for wide opportunities of flexible handling of cell cultures from different sponge species. Primmorphs model, a multicellular 3D aggregate formed by dissociated sponge cells, is considered one of the best approaches to establish sponge cell culture but, in spite of the available protocols for freezing sponge cells, there is no information regarding the ability of the latter to form primmorphs after thawing. In the present work, we demonstrate that, after a freezing and thawing cycle using dissociated Petrosia ficiformis cells as a model, cells viability was high but it was not possible to obtain primmorphs. The same protocol for cryopreservation was then used to directly freeze primmorphs. In this second case, after thawing, viability and the cellular proliferative level were similar to unfrozen standard primmorphs. Spiculogenesis in thawed primmorphs was evaluated by quantifying the silicatein gene expression level and by assaying the silica amount in the newly formed spicules, then compared with the correspondent values obtained in standard unfrozen primmorphs. Results indicate that the freezing cycle does not affect the spiculogenesis rate. Finally, the expression level of heat shock protein 70, a well-known stress marker, was assayed and the results showed no differences between frozen and unfrozen samples. These findings are likely to promote relevant improvements in sponge cell culture technique, allowing for a worldwide exchange of living biological material, paving the way for cell banking of Porifera.
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