1
|
Joseph I, Risener CJ, Falk K, Northington G, Quave CL. Bacterial Persistence in Urinary Tract Infection Among Postmenopausal Population. Urogynecology (Phila) 2024; 30:205-213. [PMID: 38484233 PMCID: PMC10947078 DOI: 10.1097/spv.0000000000001452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
IMPORTANCE Urinary tract infections (UTIs) are common in older-aged women. Our study examined bacterial persistence with commonly prescribed antibiotics. Bacterial growth was demonstrated despite antibiotic treatment. OBJECTIVES The aims of this study were to quantify the bacterial persister phenotype in urine collected from postmenopausal women with acute and recurrent UTI and to determine the capabilities of first-line antibiotics to effectively treat persister cells. STUDY DESIGN This was an institutional review board-approved cross-sectional analysis within a large academic referral center. Uropathogens were cultured from postmenopausal women with acute or recurrent UTI and screened for persister cells using persistence assays. Demographic and clinical variables were collected and analyzed. The entire experimental process was repeated in triplicate. Data were analyzed for significance (P < 0.05) between the persister culture and antibiotic treatments using a 1-way analysis of variance with multiple comparisons in Prism 9.3.0. RESULTS Forty participants were included: 62.5% White, 22.5% Black, 3% Asian, and 2% Hispanic with a mean age of 72.3 ± 11.62 years. The persister phenotype was demonstrated in all of Escherichia coli isolates. Treatment with fosfomycin demonstrated reduced colony-forming units per milliliter compared with control (P < 0.01). Among recurrent isolates, there was a statistically significant decrease in colony-forming units per milliliter after antibiotic treatment with all 4 antibiotics (P < 0.05). CONCLUSIONS This study demonstrated in vitro bacterial persistence in uropathogens from urogynecology patients despite treatment with commonly prescribed antibiotics. Fosfomycin generated the least amount of persister cells. Results suggest that persistence may be one bacterial defense mechanism involved in UTIs. Further research is needed to understand the clinical implications.
Collapse
|
2
|
Woo S, Marquez L, Crandall WJ, Risener CJ, Quave CL. Recent advances in the discovery of plant-derived antimicrobial natural products to combat antimicrobial resistant pathogens: insights from 2018-2022. Nat Prod Rep 2023; 40:1271-1290. [PMID: 37439502 PMCID: PMC10472255 DOI: 10.1039/d2np00090c] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Covering: 2018 to 2022Antimicrobial resistance (AMR) poses a significant global health threat. There is a rising demand for innovative drug scaffolds and new targets to combat multidrug-resistant bacteria. Before the advent of antibiotics, infections were treated with plants chosen from traditional medicine practices. Of Earth's 374 000 plant species, approximately 9% have been used medicinally, but most species remain to be investigated. This review illuminates discoveries of antimicrobial natural products from plants covering 2018 to 2022. It highlights plant-derived natural products with antibacterial, antivirulence, and antibiofilm activity documented in lab studies. Additionally, this review examines the development of novel derivatives from well-studied parent natural products, as natural product derivatives have often served as scaffolds for anti-infective agents.
Collapse
Affiliation(s)
- Sunmin Woo
- Center for the Study of Human Health, Emory University, USA
| | - Lewis Marquez
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - William J Crandall
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - Caitlin J Risener
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - Cassandra L Quave
- Center for the Study of Human Health, Emory University, USA
- Department of Dermatology, Emory University School of Medicine, USA.
| |
Collapse
|
3
|
Brayton SR, Toles ZEA, Sanchez CA, Michaud ME, Thierer LM, Keller TM, Risener CJ, Quave CL, Wuest WM, Minbiole KPC. Soft QPCs: Biscationic Quaternary Phosphonium Compounds as Soft Antimicrobial Agents. ACS Infect Dis 2023; 9:943-951. [PMID: 36926876 PMCID: PMC10111419 DOI: 10.1021/acsinfecdis.2c00624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Quaternary ammonium compounds (QACs) serve as a first line of defense against infectious pathogens. As resistance to QACs emerges in the environment, the development of next-generation disinfectants is of utmost priority for human health. Balancing antibacterial potency with environmental considerations is required to effectively counter the development of bacterial resistance. To address this challenge, a series of 14 novel biscationic quaternary phosphonium compounds (bisQPCs) have been prepared as amphiphilic disinfectants through straightforward, high-yielding alkylation reactions. These compounds feature decomposable or "soft" amide moieties in their side chains, anticipated to promote decomposition under environmental conditions. Strong bioactivity against a panel of seven bacterial pathogens was observed, highlighted by single-digit micromolar activity for compounds P6P-12A,12A and P3P-12A,12A. Hydrolysis experiments in pure water and in buffers of varying pH revealed surprising decomposition of the soft QPCs under basic conditions at the phosphonium center, leading to inactive phosphine oxide products; QPC stability (>24 h) was maintained in neutral solutions. The results of this work unveil soft QPCs as a potent and environmentally conscious new class of bisQPC disinfectants.
Collapse
Affiliation(s)
- Samantha R Brayton
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Zachary E A Toles
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Christian A Sanchez
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Marina E Michaud
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Laura M Thierer
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Taylor M Keller
- Department of Chemistry Crystallography Facility, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Caitlin J Risener
- Molecular and Systems Pharmacology Program, Emory University, Atlanta, Georgia 30322, United States
| | - Cassandra L Quave
- Department of Dermatology, Emory University School of Medicine, Emory University, Atlanta, Georgia 30322, United States
| | - William M Wuest
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Kevin P C Minbiole
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| |
Collapse
|
4
|
Risener CJ, Woo S, Samarakoon T, Caputo M, Edwards E, Klepzig K, Applequist W, Zandi K, Goh SL, Downs-Bowen JA, Schinazi RF, Quave CL. Botanical inhibitors of SARS-CoV-2 viral entry: a phylogenetic perspective. Sci Rep 2023; 13:1244. [PMID: 36690683 PMCID: PMC9868516 DOI: 10.1038/s41598-023-28303-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 01/17/2023] [Indexed: 01/24/2023] Open
Abstract
Throughout the SARS-CoV-2 pandemic, the use of botanical dietary supplements in the United States has increased, yet their safety and efficacy against COVID-19 remains underexplored. The Quave Natural Product Library is a phylogenetically diverse collection of botanical and fungal natural product extracts including popular supplement ingredients. Evaluation of 1867 extracts and 18 compounds for virus spike protein binding to host cell ACE2 receptors in a SARS-CoV-2 pseudotyped virus system identified 310 extracts derived from 188 species across 76 families (3 fungi, 73 plants) that exhibited ≥ 50% viral entry inhibition activity at 20 µg/mL. Extracts exhibiting mammalian cytotoxicity > 15% and those containing cardiotoxic cardiac glycosides were eliminated. Three extracts were selected for further testing against four pseudotyped variants and infectious SARS-CoV-2 and were then further chemically characterized, revealing the potent (EC50 < 5 µg/mL) antiviral activity of Solidago altissima L. (Asteraceae) flowers and Pteridium aquilinum (L.) Kuhn (Dennstaedtiaceae) rhizomes.
Collapse
Affiliation(s)
- Caitlin J Risener
- Molecular and Systems Pharmacology, Laney Graduate School, Emory University, Atlanta, GA, USA
- Center for the Study of Human Health, Emory University, Atlanta, GA, USA
| | - Sunmin Woo
- Center for the Study of Human Health, Emory University, Atlanta, GA, USA
| | | | - Marco Caputo
- Center for the Study of Human Health, Emory University, Atlanta, GA, USA
| | - Emily Edwards
- Center for the Study of Human Health, Emory University, Atlanta, GA, USA
| | | | | | - Keivan Zandi
- Laboratory of Biochemical Pharmacology, Department of Pediatrics and Children's Healthcare of Atlanta, Emory University, Atlanta, GA, USA
| | - Shu Ling Goh
- Laboratory of Biochemical Pharmacology, Department of Pediatrics and Children's Healthcare of Atlanta, Emory University, Atlanta, GA, USA
| | - Jessica A Downs-Bowen
- Laboratory of Biochemical Pharmacology, Department of Pediatrics and Children's Healthcare of Atlanta, Emory University, Atlanta, GA, USA
| | - Raymond F Schinazi
- Laboratory of Biochemical Pharmacology, Department of Pediatrics and Children's Healthcare of Atlanta, Emory University, Atlanta, GA, USA
| | - Cassandra L Quave
- Molecular and Systems Pharmacology, Laney Graduate School, Emory University, Atlanta, GA, USA.
- Center for the Study of Human Health, Emory University, Atlanta, GA, USA.
- Department of Dermatology, Emory University School of Medicine, Atlanta, GA, USA.
| |
Collapse
|
5
|
Risener CJ, Woo S, Samarakoon T, Caputo M, Edwards E, Zandi K, Goh SL, Downs‐Bowen JA, Schinazi RF, Quave CL. Identification of Botanical Viral Entry Inhibitors for SARS‐CoV‐2. FASEB J 2022. [PMCID: PMC9348176 DOI: 10.1096/fasebj.2022.36.s1.r5609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The examination of biodiversity across the world has historically been a critical part of drug development and led to the discovery of common medications for many medical issues including pain management, cancer, heart disease, and infections. During the SARS‐CoV‐2 pandemic, the use of natural supplements in the United States has increased. The efficacy of these natural products to prevent SARS‐CoV‐2 infection and the safety of their use remains unexplored; therefore, more research must be done to determine which supplements have antiviral properties. The Quave Natural Product Library (QNPL) is a collection of over 2,000 botanical and fungal extracts and includes the 40 most used natural supplements in the United States. Collection of the biological samples for the library requires field expeditions to areas throughout the world with high levels of biodiversity. Each of these extracts were tested in a SARS‐CoV‐2 pseudotyped virus system to determine which extracts inhibit viral entry, specifically the virus spike protein binding to host cells ACE2 receptors. Mammalian cell cytotoxicity assays were run in parallel. Evaluation of 1,887 extracts and 18 single compounds from the QNPL against SARS‐CoV‐2 identified. 317 extracts derived from 134 species across 76 families (1 lichen, 2 fungi, 73 plant families) exhibited ≥50% inhibition activity in the wild type spike pseudotyped model at 20 µg/mL. Of these bioactive extracts, 129 extracts derived from 95 plant species exhibited ≥85% inhibition activity and ≤15% cytotoxicity in the wild‐type model. Once these 129 extracts were identified, an interesting pattern emerged indicating many hits were from species that are known to be cardiotoxic due to rich composition of cardiac glycosides. For further selection and testing, we reviewed each extract and consulted the literature to eliminate extracts with those properties or similar compounds, which narrowed down our interest to 8 extracts. These extracts were further validated in a concentration‐response assay in a pseudotyped virus model. The EC50 values of the top 3 extracts were all under 10 µg/mL. These 3 extracts all exhibited activity (≥85% inhibition activity) in the wildtype and variant pseudotyped models. Testing in live SARS‐CoV‐2 confirmed antiviral activity from 2 of 3 extracts, Plant Aflowers and Plant B roots. Further chemical characterization of the major metabolites of these two hits was performed using MS/MS fragmentation data compared with the literature, in silico prediction, and web‐based databases. The results revealed phenylpropanoids, flavonoids, triterpenes, glycosidic terpenes, and fatty acids as the major chemical classes. The next steps of this study seek to identify and isolate purified bioactive compounds to further understand their role in SARS‐CoV‐2 inhibition.
Collapse
Affiliation(s)
- Caitlin J. Risener
- DermatologyEmory University School of MedicineAtlantaGA
- Graduate Divison of Biological and Biomedical Sciences ‐ Molecular and Systems PharmacologyEmory University School of MedicineAtlantaGA
| | - Sunmin Woo
- Center for the Study of Human HealthEmory College of Arts and SciencesAtlantaGA
| | | | - Marco Caputo
- Center for the Study of Human HealthEmory College of Arts and SciencesAtlantaGA
| | - Emily Edwards
- DermatologyEmory University School of MedicineAtlantaGA
| | - Keivan Zandi
- PediatricsEmory University School of MedicineAtlantaGA
- Laboratory of Biochemical PharmacologyEmory University School of MedicineAtlantaGA
| | - Shu Ling Goh
- PediatricsEmory University School of MedicineAtlantaGA
- Laboratory of Biochemical PharmacologyEmory University School of MedicineAtlantaGA
| | | | - Raymond F. Schinazi
- PediatricsEmory University School of MedicineAtlantaGA
- Laboratory of Biochemical PharmacologyEmory University School of MedicineAtlantaGA
| | - Cassandra L. Quave
- DermatologyEmory University School of MedicineAtlantaGA
- Graduate Divison of Biological and Biomedical Sciences ‐ Molecular and Systems PharmacologyEmory University School of MedicineAtlantaGA
- Center for the Study of Human HealthEmory University School of MedicineAtlantaGA
| |
Collapse
|
6
|
Salam AM, Porras G, Cho YSK, Brown MM, Risener CJ, Marquez L, Lyles JT, Bacsa J, Horswill AR, Quave CL. Castaneroxy A From the Leaves of Castanea sativa Inhibits Virulence in Staphylococcus aureus. Front Pharmacol 2021; 12:640179. [PMID: 34262448 PMCID: PMC8274328 DOI: 10.3389/fphar.2021.640179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 06/01/2021] [Indexed: 01/05/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) represents one of the most serious infectious disease concerns worldwide, with the CDC labeling it a "serious threat" in 2019. The current arsenal of antibiotics works by targeting bacterial growth and survival, which exerts great selective pressure for the development of resistance. The development of novel anti-infectives that inhibit quorum sensing and thus virulence in MRSA has been recurrently proposed as a promising therapeutic approach. In a follow-up of a study examining the MRSA quorum sensing inhibitory activity of extracts of Italian plants used in local traditional medicine, 224C-F2 was reported as a bioactive fraction of a Castanea sativa (European chestnut) leaf extract. The fraction demonstrated high activity in vitro and effective attenuation of MRSA pathogenicity in a mouse model of skin infection. Through further bioassay-guided fractionation using reverse-phase high performance liquid chromatography, a novel hydroperoxy cycloartane triterpenoid, castaneroxy A (1), was isolated. Its structure was established by nuclear magnetic resonance, mass spectrometry and X-ray diffraction analyses. Isomers of 1 were also detected in an adjacent fraction. In a series of assays assessing inhibition of markers of MRSA virulence, 1 exerted activities in the low micromolar range. It inhibited agr::P3 activation (IC50 = 31.72 µM), δ-toxin production (IC50 = 31.72 µM in NRS385), supernatant cytotoxicity to HaCaT human keratinocytes (IC50 = 7.93 µM in NRS385), and rabbit erythrocyte hemolytic activity (IC50 = 7.93 µM in LAC). Compound 1 did not inhibit biofilm production, and at high concentrations it exerted cytotoxicity against human keratinocytes greater than that of 224C-F2. Finally, 1 reduced dermonecrosis in a murine model of MRSA infection. The results establish 1 as a promising antivirulence candidate for development against MRSA.
Collapse
Affiliation(s)
- Akram M Salam
- Program in Molecular and Systems Pharmacology, Laney Graduate School, Emory University, Atlanta, GA, United States
| | - Gina Porras
- Center for the Study of Human Health, Emory University, Atlanta, GA, United States
| | - Young-Saeng K Cho
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Morgan M Brown
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Caitlin J Risener
- Program in Molecular and Systems Pharmacology, Laney Graduate School, Emory University, Atlanta, GA, United States
| | - Lewis Marquez
- Program in Molecular and Systems Pharmacology, Laney Graduate School, Emory University, Atlanta, GA, United States
| | - James T Lyles
- Center for the Study of Human Health, Emory University, Atlanta, GA, United States
| | - John Bacsa
- Department of Chemistry, Emory University, Atlanta, GA, United States
| | - Alexander R Horswill
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Cassandra L Quave
- Center for the Study of Human Health, Emory University, Atlanta, GA, United States.,Department of Dermatology, Emory University School of Medicine, Atlanta, GA, United States.,Antibiotic Resistance Center, Emory University, Atlanta, GA, United States
| |
Collapse
|
7
|
Gurnee EA, Xu M, Risener CJ, Lehman K, Nelson K, Swerlick RA, Quave CL. Staphylococcal Hemolytic Potential Is Correlated with Increased Severity of Atopic Dermatitis in Children and Young Adults. J Invest Dermatol 2020; 141:1588-1591. [PMID: 33359627 DOI: 10.1016/j.jid.2020.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 11/02/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Affiliation(s)
- Emily A Gurnee
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Mengqing Xu
- Center for the Study of Human Health, Emory University, Atlanta, Georgia, USA
| | - Caitlin J Risener
- Molecular and Systems Pharmacology Graduate Program, Emory University, Atlanta, Georgia, USA
| | - Kelly Lehman
- Microbiology and Molecular Genetics Graduate Program, Emory University, Atlanta, Georgia, USA
| | - Kate Nelson
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Robert A Swerlick
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Cassandra L Quave
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia, USA.
| |
Collapse
|
8
|
Azumaya CM, Linton EA, Risener CJ, Nakagawa T, Karakas E. Cryo-EM structure of human type-3 inositol triphosphate receptor reveals the presence of a self-binding peptide that acts as an antagonist. J Biol Chem 2020; 295:1743-1753. [PMID: 31915246 PMCID: PMC7008357 DOI: 10.1074/jbc.ra119.011570] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 01/06/2020] [Indexed: 01/04/2023] Open
Abstract
Calcium-mediated signaling through inositol 1,4,5-triphosphate receptors (IP3Rs) is essential for the regulation of numerous physiological processes, including fertilization, muscle contraction, apoptosis, secretion, and synaptic plasticity. Deregulation of IP3Rs leads to pathological calcium signaling and is implicated in many common diseases, including cancer and neurodegenerative, autoimmune, and metabolic diseases. Revealing the mechanism of activation and inhibition of this ion channel will be critical to an improved understanding of the biological processes that are controlled by IP3Rs. Here, we report structural findings of the human type-3 IP3R (IP3R-3) obtained by cryo-EM (at an overall resolution of 3.8 Å), revealing an unanticipated regulatory mechanism where a loop distantly located in the primary sequence occupies the IP3-binding site and competitively inhibits IP3 binding. We propose that this inhibitory mechanism must differ qualitatively among IP3R subtypes because of their diverse loop sequences, potentially serving as a key molecular determinant of subtype-specific calcium signaling in IP3Rs. In summary, our structural characterization of human IP3R-3 provides critical insights into the mechanistic function of IP3Rs and into subtype-specific regulation of these important calcium-regulatory channels.
Collapse
MESH Headings
- Binding Sites
- Calcium Signaling
- Cryoelectron Microscopy
- Humans
- Inositol 1,4,5-Trisphosphate/metabolism
- Inositol 1,4,5-Trisphosphate Receptors/antagonists & inhibitors
- Inositol 1,4,5-Trisphosphate Receptors/chemistry
- Inositol 1,4,5-Trisphosphate Receptors/metabolism
- Inositol 1,4,5-Trisphosphate Receptors/ultrastructure
- Models, Molecular
- Peptides/metabolism
- Protein Conformation
Collapse
Affiliation(s)
- Caleigh M Azumaya
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232
| | - Emily A Linton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232
| | - Caitlin J Risener
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232
| | - Terunaga Nakagawa
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232; Center for Structural Biology, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232; Vanderbilt Brain Institute, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232
| | - Erkan Karakas
- Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232; Center for Structural Biology, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232.
| |
Collapse
|