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Díez Pérez T, Tafoya AN, Peabody DS, Lakin MR, Hurwitz I, Carroll NJ, López GP. Isolation of nucleic acids using liquid-liquid phase separation of pH-sensitive elastin-like polypeptides. Sci Rep 2024; 14:10157. [PMID: 38698072 PMCID: PMC11065875 DOI: 10.1038/s41598-024-60648-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 04/25/2024] [Indexed: 05/05/2024] Open
Abstract
Extraction of nucleic acids (NAs) is critical for many methods in molecular biology and bioanalytical chemistry. NA extraction has been extensively studied and optimized for a wide range of applications and its importance to society has significantly increased. The COVID-19 pandemic highlighted the importance of early and efficient NA testing, for which NA extraction is a critical analytical step prior to the detection by methods like polymerase chain reaction. This study explores simple, new approaches to extraction using engineered smart nanomaterials, namely NA-binding, intrinsically disordered proteins (IDPs), that undergo triggered liquid-liquid phase separation (LLPS). Two types of NA-binding IDPs are studied, both based on genetically engineered elastin-like polypeptides (ELPs), model IDPs that exhibit a lower critical solution temperature in water and can be designed to exhibit LLPS at desired temperatures in a variety of biological solutions. We show that ELP fusion proteins with natural NA-binding domains can be used to extract DNA and RNA from physiologically relevant solutions. We further show that LLPS of pH responsive ELPs that incorporate histidine in their sequences can be used for both binding, extraction and release of NAs from biological solutions, and can be used to detect SARS-CoV-2 RNA in samples from COVID-positive patients.
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Affiliation(s)
- Telmo Díez Pérez
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM, 87131, USA
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Ashley N Tafoya
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM, 87131, USA
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
| | - David S Peabody
- Department of Molecular Genetics and Microbiology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Matthew R Lakin
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
- Department of Computer Science, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Ivy Hurwitz
- Department of Internal Medicine, Center for Global Health, University of New Mexico Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Nick J Carroll
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM, 87131, USA
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Gabriel P López
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, NM, 87131, USA.
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM, 87131, USA.
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, 87131, USA.
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Rupe C, Basco A, Gioco G, Patini R, Lucchese A, Micciché F, Massaccesi M, Lajolo C. Sodium-hyaluronate mouthwash on radiotherapy-induced xerostomia: a randomised clinical trial. Support Care Cancer 2023; 31:644. [PMID: 37851095 PMCID: PMC10584731 DOI: 10.1007/s00520-023-08090-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/28/2023] [Indexed: 10/19/2023]
Abstract
INTRODUCTION Radiotherapy-induced xerostomia (RIX) is one of the most common adverse effects of radiotherapy (RT) in head and neck cancer patients (HNC) and a major determinant of survivors' quality of life. The primary objective was to evaluate the reduction of patients' xerostomia symptoms after the utilisation of a sodium-hyaluronate mouthwash compared to a placebo solution. The secondary objectives were to evaluate the improvement of quality of life and to evaluate the patients' satisfaction. METHODS The protocol was approved by the ethical committee (Ref. 50,053/19) and registered at ClinicalTrials.gov (ID: NCT05103124). The study was a double-blind randomised clinical trial (RCT) with a crossover design and was conducted at the Fondazione Policlinico Universitario A. Gemelli, Rome. RESULTS Thirty-two patients completed the study protocol. Lower values of the modified Xerostomia Questionnaire (XQ) were retrieved when comparing the baseline scores to the ones after the treatment, when compared with placebo (Mann-Whitney U test = 0.01); higher values of patients' satisfaction (Likert scale) and modified XQ were retrieved for the sodium-hyaluronate mouthwash (Mann-Whitney U test = 0.001). CONCLUSIONS This RCT highlights the advantages of treating RIX with the sodium-hyaluronate mouthwash since it seems to be clinically effective in reducing its symptoms, without any reported adverse events. CLINICALTRIALS gov: NCT05103124 in 17/10/2021.
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Affiliation(s)
- Cosimo Rupe
- Head and Neck Department, School of Dentistry, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Alessia Basco
- Head and Neck Department, School of Dentistry, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Gioele Gioco
- Head and Neck Department, School of Dentistry, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy.
| | - Romeo Patini
- Head and Neck Department, School of Dentistry, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Alberta Lucchese
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania "Luigi Vanvitelli", Via Luigi de Crecchio 6, 80138, Naples, Italy
| | - Francesco Micciché
- Department of Radiation Oncology, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Institute of Radiology, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Mariangela Massaccesi
- Department of Radiation Oncology, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Institute of Radiology, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Carlo Lajolo
- Head and Neck Department, School of Dentistry, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy
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Jose A, Singh ML, Magnuson B, Farag A, Varghese R, Papas A. A randomized controlled study to evaluate an experimental moisturizing mouthwash formulation in participants experiencing dry mouth symptoms. Oral Surg Oral Med Oral Pathol Oral Radiol 2018; 126:231-239.e5. [PMID: 29941402 DOI: 10.1016/j.oooo.2018.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/24/2018] [Accepted: 05/18/2018] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the efficacy and tolerability of an experimental moisturizing mouthwash versus water only in participants experiencing dry mouth symptoms, including those with Sjögren syndrome (n = 28). STUDY DESIGN Participants were randomized to the experimental mouthwash group (n = 53) or the water-only group (n = 47). For 8 days, the mouthwash group used 1 to 2 doses/day at home; both groups could sip water, as needed. Supervised treatment occurred on days 1, 3, and 8, and during this treatment, before and after administration, participants completed the Product Performance and Attributes Questionnaire parts 1 through 4. RESULTS Significant between-treatment differences on all Product Performance and Attributes Questionnaire questions were shown at most time points. On day 8, at 120 minutes, there was a significant difference on Product Performance and Attributes Questionnaire 3-Question 1 ("Relieves the discomfort of dry mouth"; the predefined primary efficacy variable) in favor of mouthwash versus water (0.63 [95% confidence interval 0.17-1.10]; P = .0084). Subgroup analysis found a significant difference that favored mouthwash in participants without Sjögren syndrome (0.67 [0.11,1.23]; P = .0203) but not with Sjögren syndrome (0.52 [-0.35,1.38; P = .2272). Eight, non-serious, oral treatment-related adverse events were reported by the mouthwash group. CONCLUSIONS The findings of a subjective questionnaire showed that an experimental moisturizing mouthwash provided greater relief than water only from dry mouth symptoms over 8 days.
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Affiliation(s)
- Anto Jose
- GSK Consumer Healthcare, Weybridge, Surrey, UK.
| | - Mabi L Singh
- Division of Oral Medicine, Department of Diagnostic Sciences, Tufts University School of Dental Medicine, Boston, MA, USA
| | - Britta Magnuson
- Division of Oral Medicine, Department of Diagnostic Sciences, Tufts University School of Dental Medicine, Boston, MA, USA
| | - Arwa Farag
- Division of Oral Medicine, Department of Diagnostic Sciences, Tufts University School of Dental Medicine, Boston, MA, USA; Department of Oral Diagnostic Sciences, King Abdul Aziz University Faculty of Dentistry, Jeddah, Saudi Arabia
| | | | - Athena Papas
- Division of Oral Medicine, Department of Diagnostic Sciences, Tufts University School of Dental Medicine, Boston, MA, USA
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Synergistic Effect of the Lactoperoxidase System and Cinnamon Essential Oil on Total Flora andSalmonellaGrowth Inhibition in Raw Milk. J FOOD QUALITY 2018. [DOI: 10.1155/2018/8547954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Despite its antibacterial and antipathogenic effects, the heat treatment of milk induces undesirable changes that can be noted in the overall properties of ultrahigh temperature (UHT) milk, such as changes in nutritional and organoleptic properties. Our goal is to find new nonthermal antibacterial technologies for the preservation of raw milk (RM). This study investigates the possible synergistic effect of using a combination of the lactoperoxidase system (LS) and 3 μg mL−1of cinnamon essential oil (cinnamon EO) to inactivate the total flora of milk andSalmonellaHadar (S. Hadar). The LS was activated with 30 mg L−1sodium percarbonate and 14 mg L−1of sodium thiocyanate. Using this approach, we obtained a synergistic effect with a complete inhibition of the activity of the total flora of the milk andS.Hadar after 12 hours at 25°C. In addition, the attainment of synergy was defined when the inhibitory effect of the two compounds together was greater than the effect observed by each compound added alone. Moreover, the monitoring of the synergistic effect at 4°C for 5 days showed complete inhibition of total flora for 3 days and forS. Hadar it was up to 5 days. To summarize, the current study clearly identified a new inhibitory combination that may be used in food-based applications.
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