1
|
Junges DSB, Delabeneta MF, Rosseto LRB, Nascimento BL, Paris AP, Persel C, Loth EA, Simão RCG, Menolli RA, Paula CR, Gandra RF. Antibiotic Activity of Wickerhamomyces anomalus Mycocins on Multidrug-Resistant Acinetobacter baumannii. Microb Ecol 2020; 80:278-285. [PMID: 32072187 DOI: 10.1007/s00248-020-01495-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 02/12/2020] [Indexed: 06/10/2023]
Abstract
To evaluate the susceptibility of multidrug-resistant Acinetobacter baumannii to mycocins produced by Wickerhamomyces anomalus and to verify the cytotoxicity of these compounds. Three culture supernatants of W. anomalus (WA40, WA45, and WA92), containing mycocins (WA40M1, WA45M2, and WA92M3), were tested on A. baumannii using broth microdilution methods, solid medium tests, and cytotoxicity tests in human erythrocytes and in Artemia saline Leach. W. anomalus was able to produce high antimicrobial mycocins, as even at high dilutions, they inhibited A. baumannii. In a solid medium, it was possible to observe the inhibition of A. baumannii, caused by the diffusion of mycocins between agar. Finally, the three supernatants were not cytotoxic when tested on human erythrocytes and Artemia salina. According to the evidence in this study, the mycocins of W. anomalus have been effective and could be used in the development of new antimicrobial substances.
Collapse
Affiliation(s)
- Daniele S B Junges
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Mateus F Delabeneta
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Lana Rubia B Rosseto
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Bruna L Nascimento
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Ana Paula Paris
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Cristiane Persel
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Eduardo A Loth
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil
| | - Rita C G Simão
- Center of Medical and Pharmaceutical Sciences, Western Paraná State University, Cascavel, Paraná, 85819-110, Brazil
| | - Rafael A Menolli
- Center of Medical and Pharmaceutical Sciences, Western Paraná State University, Cascavel, Paraná, 85819-110, Brazil
| | - Claudete R Paula
- Faculty of Odontology, University of São Paulo, Butantã, São Paulo, 05508-000, Brazil
| | - Rinaldo F Gandra
- Western Paraná University Hospital, Western Paraná State University, Cascavel, Paraná, 85806-470, Brazil.
| |
Collapse
|
2
|
Nascimento BL, Delabeneta MF, Rosseto LRB, Junges DSB, Paris AP, Persel C, Gandra RF. Yeast Mycocins: a great potential for application in health. FEMS Yeast Res 2020; 20:5818766. [PMID: 32275311 DOI: 10.1093/femsyr/foaa016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 04/03/2020] [Indexed: 01/10/2023] Open
Abstract
Mycocins have demonstrated inhibition of fungi, bacteria, parasites and viruses, in addition to being studied as epidemiological markers and in the development of vaccines. They are defined as extracellular proteins or glycoproteins with different activities, the main mechanism of action being the inhibition of β-glucan synthesis in the cell wall of sensitive strains. Given the resistance problems created by several microorganisms to agents commonly used in clinical practice, the discovery of new substances with this purpose becomes essential. Mycocins have potential as anti-microbials because they show minimal toxicity and do not present resistance.
Collapse
Affiliation(s)
- Bruna L Nascimento
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| | - Mateus F Delabeneta
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| | - Lana Rubia B Rosseto
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| | - Daniele S B Junges
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| | - Ana Paula Paris
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| | - Cristiane Persel
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| | - Rinaldo F Gandra
- Department of Medical and Pharmaceutical Sciences, Avenida Tancredo Neves 3224 CEP: 85806-470, Cascavel, Paraná, Brazil
| |
Collapse
|
3
|
Serafin CF, Paris AP, Paula CR, Simão RCG, Gandra RF. Repression of Proteases and Hsp90 Chaperone Expression Induced by an Antiretroviral in Virulent Environmental Strains of Cryptococcus neoformans. Microb Ecol 2017; 73:583-589. [PMID: 27909750 DOI: 10.1007/s00248-016-0900-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 11/13/2016] [Indexed: 06/06/2023]
Abstract
This study evaluated the effect of the antiretroviral ritonavir on protease secretion in different strains of Cryptococcus neoformans isolated from the environment and investigated the expression of heat shock protein (Hsp90), classically described virulence factors in other yeast in the presence of the same antiretroviral. The presence of the enzyme was detected by the formation of a degradation of the halo around the colonies. The results were classified as follows: level 1 (without proteases), level 2 (positive for proteases), and level 3 (strongly positive for proteases). Total protein extract isolated from the cell walls of the 12 strains incubated in the absence and presence of ritonavir (0.3125 mg mL-1) were resolved by SDS-PAGE and analyzed by Western blot assays using an antiserum against Hsp90 from Blastocladiella emersonii. All strains tested showed inhibition of proteinase activity in the presence of ritonavir at 0.3125 to 1.25 mg mL-1. High levels of Hsp90 were observed in the absence of ritonavir (0.3125 mg mL-1), except for the non-virulent control cells. In contrast, in the presence of the antiretroviral, a drastic reduction in the expression of the chaperone was observed. The data suggest that ritonavir, in addition to containing viral replication, could inhibit the expression of virulence factors in opportunistic yeast, as proteases and Hsp90. According to our current knowledge, this is the first time that the inhibition of Hsp90 by an antiretroviral was reported for environmental isolates of C. neoformans.
Collapse
Affiliation(s)
- Cleber Fernando Serafin
- Hospital Universitário do Oeste do Paraná, Universidade Estadual do Oeste do Paraná - UNIOESTE, Av Tancredo Neves, 3224, Cascavel, PR, Brazil
| | - Ana Paula Paris
- Hospital Universitário do Oeste do Paraná, Universidade Estadual do Oeste do Paraná - UNIOESTE, Av Tancredo Neves, 3224, Cascavel, PR, Brazil
| | | | - Rita Cássia Garcia Simão
- Laboratório de Bioquímica Molecular, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, UNIOESTE, Cascavel, PR, Brazil
| | - Rinaldo Ferreira Gandra
- Hospital Universitário do Oeste do Paraná, Universidade Estadual do Oeste do Paraná - UNIOESTE, Av Tancredo Neves, 3224, Cascavel, PR, Brazil.
| |
Collapse
|
4
|
Paris AP, Persel C, Serafin CF, de Cássia Garcia Simão R, Gandra RF. Susceptibility of Candida albicans Isolated from Blood to Wickerhamomyces anomalous Mycocins. Curr Microbiol 2016; 73:878-884. [PMID: 27638312 DOI: 10.1007/s00284-016-1135-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 09/07/2016] [Indexed: 11/25/2022]
Abstract
The occurrence of infections caused by Candida albicans in developed and developing countries and their resistance to some available antifungal drugs have been viewed as causing a great problem to human health worldwide. In order to find new researched molecules, there are some mycoses secreted by yeasts, especially mycocins produced by Wickerhamomyces anomalus with a broad antimicrobial spectrum of activity. Thus, this trial aimed at evaluating mycocins' activity obtained from environmental W. anomalus cell wall compared to thirty C. albicans strains isolated from blood. Mycocins were extracted from cell walls of three W. anomalus strains (WA40, WA45, and WA92). The 400 μg mL-1 concentration of WA40M1, WA45M2, and WA92M3 mycocin extracts showed the following respective activity results: 96.6, 96.6, and 90.0 % C. albicans strains. WA45M2 and WA92M3 mycocin extracts showed some activity in 3.3 % of C. albicans strains at 50 μg mL-1 concentration. Mycocins extracted from cell walls of three W. anomalus strains named as WA40, WA45, and WA92 showed antifungal activity compared to C. albicans and low degree of hemolysis.
Collapse
Affiliation(s)
- Ana Paula Paris
- Hospital Universitário do Oeste do Paraná,Universidade Estadual do Oeste do Paraná-UNIOESTE, Av. Tancredo Neves, 3224, Cascavel, PR, 85806-470, Brazil.
| | - Cristiane Persel
- Hospital Universitário do Oeste do Paraná,Universidade Estadual do Oeste do Paraná-UNIOESTE, Av. Tancredo Neves, 3224, Cascavel, PR, 85806-470, Brazil
| | - Cleber Fernando Serafin
- Hospital Universitário do Oeste do Paraná,Universidade Estadual do Oeste do Paraná-UNIOESTE, Av. Tancredo Neves, 3224, Cascavel, PR, 85806-470, Brazil
| | - Rita de Cássia Garcia Simão
- Laboratório de Bioquímica Molecular, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, UNIOESTE, Cascavel, PR, Brazil
| | - Rinaldo Ferreira Gandra
- Hospital Universitário do Oeste do Paraná,Universidade Estadual do Oeste do Paraná-UNIOESTE, Av. Tancredo Neves, 3224, Cascavel, PR, 85806-470, Brazil
| |
Collapse
|