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Hong H, Choi J, Kim HJ, Park SH. Stress resistance insights of 65 Listeria strains: Acidic, low temperature, and high salt environments. Microb Pathog 2024; 194:106793. [PMID: 39004154 DOI: 10.1016/j.micpath.2024.106793] [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: 04/18/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/16/2024]
Abstract
Genetically, Listeria monocytogenes is closely related to non-L. monocytogenes (L. innocua, L. welshimeri, L. grayi, L. aquatica, and L. fleischimannii). This bacterium is well known for its resistance to harsh conditions including acidity, low temperatures, and high salt concentrations. This study explored the responses of 65 Listeria strains to stress conditions and characterized the prevalence of stress-related genes. The 65 Listeria strains were isolated from different environments and their viability was assessed in four different tests: independent tests for pH 3, 1 °C, and 5 % salt concentration and multiple resistance tests that combined pH 3, 1 °C, 5 % salt. From the data, the 65 strains were categorized into stress-resistant (56) or stress-sensitive groups (9), with approximately 4 log CFU/mL differences. The PCR assay analyzed the prevalence of two virulence genes prfA and inlA, and eight stress-related genes: three acid (gadB, gadC, and atpD), two low temperature (betL and opuCA) and three salt resistance genes (flaA, cysS, and fbp). Two low temperature (bet and opuCA) and salt resistance (fbp) genes were more prevalent in the stress-resistant strains than in the stress-sensitive Listeria group.
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Affiliation(s)
- Hyunhee Hong
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, USA
| | - Jungmin Choi
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, USA
| | - Hyun Jung Kim
- Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - Si Hong Park
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, USA.
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2
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Dhankhar P, Trinh TKH, Qiu W, Guo Y. Characterization of Ca 2+-ATPase, LMCA1, with native cell membrane nanoparticles system. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2023; 1865:184143. [PMID: 36863681 PMCID: PMC10375462 DOI: 10.1016/j.bbamem.2023.184143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/06/2023] [Accepted: 02/16/2023] [Indexed: 03/04/2023]
Abstract
Ca2+-ATPases are membrane pumps that transport calcium ions across the cell membrane and are dependent on ATP. The mechanism of Listeria monocytogenes Ca2+-ATPase (LMCA1) in its native environment remains incompletely understood. LMCA1 has been investigated biochemically and biophysically with detergents in the past. This study characterizes LMCA1 using the detergent-free Native Cell Membrane Nanoparticles (NCMNP) system. As demonstrated by ATPase activity assays, the NCMNP7-25 polymer is compatible with a broad pH range and Ca2+ ions. This result suggests that NCMNP7-25 may have a wider array of applications in membrane protein research.
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Affiliation(s)
- Poonam Dhankhar
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Institute for Structural Biology, Drug Discovery, and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23219, USA
| | - Thi Kim Hoang Trinh
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Institute for Structural Biology, Drug Discovery, and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23219, USA
| | - Weihua Qiu
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Institute for Structural Biology, Drug Discovery, and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23219, USA.
| | - Youzhong Guo
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Institute for Structural Biology, Drug Discovery, and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23219, USA.
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3
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Yu C, Dong H, Li Q, Wang X, Mao F, Qian M, Niu J, Cheng X, Liao C. Biological Characteristics of Listeria monocytogenes Following Deletion of TatD-like Protein Gene. Curr Microbiol 2023; 80:118. [PMID: 36853439 DOI: 10.1007/s00284-023-03229-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 02/13/2023] [Indexed: 03/01/2023]
Abstract
TatD is the subunit of the twin-arginine translocation (Tat) pathway. Members of TatD family are multifunctional, conserved and widely presented proteins in most prokaryotes. It has been reported that Tat can affect bacterial motility in some bacteria. This study was conducted to determine the contribution of the TatD protein (herein named LmTatD) to the regulation of flagella in Listeria monocytogenes. We constructed an LmTatD gene mutant in L. monocytogenes strain 10403 s and evaluated its biological characteristics. The results showed no difference in growth or morphology between the wild-type strain and the ΔLmTatD mutant. Intriguingly, the ΔLmTatD mutant showed impaired swimming motility and flagella structure but increased biofilm formation. Comparative proteomic analysis using tandem mass tag (TMT) combined with liquid chromatography-tandem mass spectrometry (LC‒MS/MS) was performed to determine differentially expressed proteins (DEPs). The results revealed that 134 proteins out of 2228 total proteins identified were differentially expressed, among which 18 proteins were upregulated and 116 proteins were downregulated in the ΔLmTatD mutant. Analysis of DEPs indicated that the reduced expression levels of the proteins related to flagellar assembly in the ΔLmTatD mutant correlate with its characteristics. Compared to the wild-type strain, the most downregulated proteins in the ΔLmTatD mutant included FlaA, FliD, FliR, FlgD, FlgL, and FlgG. Collectively, our data suggest that although LmTatD is not required for growth in L. monocytogenes, loss of LmTatD reduces flagellar production and motility by regulating flagellar assembly-related protein expression.
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Affiliation(s)
- Chuan Yu
- Animal Diseases and Public Health Engineering Research Center of Henan Province, Luoyang Polytechnic, Luoyang, 471023, China
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Hefan Dong
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Qi Li
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Xiaoli Wang
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Fuchao Mao
- Animal Diseases and Public Health Engineering Research Center of Henan Province, Luoyang Polytechnic, Luoyang, 471023, China
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Man Qian
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Junhui Niu
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Xiangchao Cheng
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China
| | - Chengshui Liao
- College of Animal Science and Technology /Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, 263 Kaiyuan Road, Luoyang, 471023, China.
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The Bacterial MtrAB Two-Component System Regulates the Cell Wall Homeostasis Responding to Environmental Alkaline Stress. Microbiol Spectr 2022; 10:e0231122. [PMID: 36073914 PMCID: PMC9602371 DOI: 10.1128/spectrum.02311-22] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Throughout the course of evolution, bacteria have developed signal transduction tools such as two-component systems (TCSs) to meet their demands to thrive even under the most challenging environmental conditions. One TCS called MtrAB is commonly found in Actinobacteria and is implicated in cell wall metabolism, osmoprotection, cell proliferation, antigen secretion, and biosynthesis of secondary metabolites. However, precisely how the MtrAB TCS regulates the bacterial responses to external environments remains unclear. Here, we report that the MtrAB TCS regulates the cell envelope response of alkali-tolerant bacterium Dietzia sp. strain DQ12-45-1b to extreme alkaline stimuli. We found that under alkaline conditions, an mtrAB mutant exhibited both reduced growth and abnormal morphology compared to the wild-type strain. Electrophoretic mobility shift assay analysis showed that MtrA binds the promoter of the mraZ gene critical for cell wall homeostasis, suggesting that MtrA directly controls transcription of this regulator. In conclusion, our findings demonstrate that MtrAB TCS is involved in controlling the bacterial response to alkaline stimuli by regulating the expression of the cell wall homeostasis regulator MraZ in Dietzia sp. DQ12-45-1b, providing novel details critical for a mechanistic understanding of how cell wall homeostasis is controlled. IMPORTANCE Microorganisms can be found in most extreme environments, and they have to adapt to a wide range of environmental stresses. The two-component systems (TCSs) found in bacteria detect environmental stimuli and regulate physiological pathways for survival. The MtrAB TCS conserved in Corynebacterineae is critical for maintaining the metabolism of the cell wall components that protects bacteria from diverse environmental stresses. However, how the MtrAB TCS regulates cell wall homeostasis and adaptation under stress conditions is unclear. Here, we report that the MtrAB TCS in Dietzia sp. DQ12-45-1b plays a critical role in alkaline resistance by modulating the cell wall homeostasis through the MtrAB-MraZ pathway. Thus, our work provides a novel regulatory pathway used by bacteria for adaptation and survival under extreme alkaline stresses.
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Vidovic S, Paturi G, Gupta S, Fletcher GC. Lifestyle of Listeria monocytogenes and food safety: Emerging listericidal technologies in the food industry. Crit Rev Food Sci Nutr 2022; 64:1817-1835. [PMID: 36062812 DOI: 10.1080/10408398.2022.2119205] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Listeria monocytogenes, a causative agent of listeriosis, is a major foodborne pathogen. Among pathogens, L. monocytogenes stands out for its unique ecological and physiological characteristics. This distinct lifestyle of L. monocytogenes has a significant impact on food safety and public health, mainly through the ability of this pathogen to multiply at refrigeration temperature and to persist in the food processing environment. Due to a combination of these characteristics and emerging trends in consumer preference for ready-to-eat and minimally processed food, there is a need to develop effective and sustainable approaches to control contamination of food products with L. monocytogenes. Implementation of an efficient and reliable control strategy for L. monocytogenes must first address the problem of cross-contamination. Besides the preventive control strategies, cross-contamination may be addressed with the introduction of emerging post packaging non-thermal or thermal hurdles that can ensure delivery of a listericidal step in a packed product without interfering with the organoleptic characteristics of a food product. This review aims to present the most relevant findings underlying the distinct lifestyle of L. monocytogenes and its impact on food safety. We also discuss emerging food decontamination technologies that can be used to better control L. monocytogenes.
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Affiliation(s)
- Sinisa Vidovic
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Gunaranjan Paturi
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Sravani Gupta
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Graham C Fletcher
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
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Hansen SB, Dyla M, Neumann C, Quistgaard EMH, Andersen JL, Kjaergaard M, Nissen P. The Crystal Structure of the Ca 2+-ATPase 1 from Listeria monocytogenes reveals a Pump Primed for Dephosphorylation. J Mol Biol 2021; 433:167015. [PMID: 33933469 DOI: 10.1016/j.jmb.2021.167015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 12/18/2022]
Abstract
Many bacteria export intracellular calcium using active transporters homologous to the sarco/endoplasmic reticulum Ca2+-ATPase (SERCA). Here we present three crystal structures of Ca2+-ATPase 1 from Listeria monocytogenes (LMCA1). Structures with BeF3- mimicking a phosphoenzyme state reveal a closed state, which is intermediate between the outward-open E2P and the proton-occluded E2-P* conformations known for SERCA. It suggests that LMCA1 in the E2P state is pre-organized for dephosphorylation upon Ca2+ release, consistent with the rapid dephosphorylation observed in single-molecule studies. An arginine side-chain occupies the position equivalent to calcium binding site I in SERCA, leaving a single Ca2+ binding site in LMCA1, corresponding to SERCA site II. Observing no putative transport pathways dedicated to protons, we infer a direct proton counter transport through the Ca2+ exchange pathways. The LMCA1 structures provide insight into the evolutionary divergence and conserved features of this important class of ion transporters.
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Affiliation(s)
- Sara Basse Hansen
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark
| | - Mateusz Dyla
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark
| | - Caroline Neumann
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark
| | - Esben Meldgaard Hoegh Quistgaard
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark
| | - Jacob Lauwring Andersen
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark
| | - Magnus Kjaergaard
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark; Aarhus Institute of Advanced Studies (AIAS), Denmark; The Danish National Research Foundation Center for Proteins in Memory (PROMEMO), Denmark
| | - Poul Nissen
- Department of Molecular Biology and Genetics, Aarhus University, Denmark; The Danish Research Institute for Translational Neuroscience (DANDRITE), Nordic EMBL Partnership for Molecular Medicine, Denmark; The Danish National Research Foundation Center for Proteins in Memory (PROMEMO), Denmark.
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7
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Won S, Lee J, Kim J, Choi H, Kim J. Comparative Whole Cell Proteomics of Listeria monocytogenes at Different Growth Temperatures. J Microbiol Biotechnol 2020; 30:259-270. [PMID: 31838794 PMCID: PMC9728365 DOI: 10.4014/jmb.1911.11027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Listeria monocytogenes is a gram-positive, facultative anaerobe food pathogen responsible for the listeriosis that mostly occurs during the low-temperature storage of a cold cut or dairy products. To understand the systemic response to a wide range of growth temperatures, L. monocytogenes were cultivated at a different temperature from 10°C to 42°C, then whole cell proteomic analysis has been performed both exponential and stationary cells. The specific growth rate increased proportionally with the increase in growth temperature. The maximum growth rate was observed at 37°C and was maintained at 42°C. Global protein expression profiles mainly depended on the growth temperatures showing similar clusters between exponential and stationary phases. Expressed proteins were categorized by their belonging metabolic systems and then, evaluated the change of expression level in regard to the growth temperature and stages. DnaK, GroEL, GroES, GrpE, and CspB, which were the heat&cold shock response proteins, increased their expression with increasing the growth temperatures. In particular, GroES and CspB were expressed more than 100-fold than at low temperatures during the exponential phase. Meanwhile, CspL, another cold shock protein, overexpressed at a low temperature then exponentially decreased its expression to 65-folds. Chemotaxis protein CheV and flagella proteins were highly expressed at low temperatures and stationary phases. Housekeeping proteins maintained their expression levels constant regardless of growth temperature or growth phases. Most of the growth related proteins, which include central carbon catabolic enzymes, were highly expressed at 30°C then decreased sharply at high growth temperatures.
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Affiliation(s)
- Soyoon Won
- Department of Food and Nutrition, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Jeongmin Lee
- Department of Food and Nutrition, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Jieun Kim
- Department of Food and Nutrition, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Hyungseok Choi
- Department of Food and Nutrition, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Jaehan Kim
- Department of Food and Nutrition, Chungnam National University, Daejeon 305-764, Republic of Korea,Corresponding author Phone: +82-042-821-6834 Fax:+82-042-821-8887 E-mail:
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Domínguez-Ramírez LL, Rodríguez-Sanoja R, Tecante A, García-Garibay M, Sainz T, Wacher C. Tolerance to acid and alkali by Streptococcus infantarius subsp. infantarius strain 25124 isolated from fermented nixtamal dough: Pozol. Studies in APT broth. Food Microbiol 2020; 90:103458. [PMID: 32336375 DOI: 10.1016/j.fm.2020.103458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 12/10/2019] [Accepted: 02/10/2020] [Indexed: 01/21/2023]
Abstract
Pozol is a beverage prepared with maize dough made after boiling the kernels in limewater. This pretreatment could act as a selective force that shapes the starter microbiota, with microorganisms able to survive the fermentation. Since Streptococcus infantarius subsp. infantarius (Sii) dominates in pozol, we evaluated the effect of acid and alkali stresses on strain Sii-25124 in commercial APT broth as a first attempt to assess its adaptation capacity. Results suggest that Sii-25124 has adaptative advantages to pH changes that possibly contribute to its persistence even after the acidification of the dough. Its cardinal pH values were 4.0 and 11.0, with an optimum between 6.6 and 8.0. It showed alkali tolerance unlike other pozol Sii strains. Adaptation at pH 4.0, 10.0 and 11.0, compared with non-adapted cells, induced acid tolerance enhancing survival at pH 3.6 (P < 0.05); a 2 min heat shock at 62 °C induced alkali tolerance response enhancing survival at pH 10.5 (P < 0.05). The up-regulation of dnaK, groEL, ptsG and atpB was observed during 5 h of exposition at pH 3.6, 4.0 and 10.0, showing similar expression rates after induction by acid shock or alkaline stress. Changes of atpB were more evident having almost five-fold induction during long-term stress.
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Affiliation(s)
- Lila Lubianka Domínguez-Ramírez
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico.
| | - Romina Rodríguez-Sanoja
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico; Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico.
| | - Alberto Tecante
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico
| | - Mariano García-Garibay
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico; Departamento de Biotecnología/Departamento de Ciencias de La Alimentación, Universidad Autónoma Metropolitana-Iztapalapa/Lerma. Av. San Rafael Atlixco 186, Colonia Vicentina, Iztapalapa, C.P., 09340, Mexico City, Mexico.
| | - Teresita Sainz
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico; Departamento de Sistemas Biológicos de La División de CBS, Universidad Autónoma Metropolitana-Xochimilco. Calzada Del Hueso 1100, Colonia Villa Quietud, Coyoacán, C.P, 04969, Mexico City, Mexico.
| | - Carmen Wacher
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, C.P., 04510, Mexico City, Mexico.
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Wu D, Forghani F, Daliri EBM, Li J, Liao X, Liu D, Ye X, Chen S, Ding T. Microbial response to some nonthermal physical technologies. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2019.11.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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Ferwerda B, Maury MM, Brouwer MC, Hafner L, van der Ende A, Bentley S, Lecuit M, van de Beek D. Residual Variation Intolerance Score Detects Loci Under Selection in Neuroinvasive Listeria monocytogenes. Front Microbiol 2019; 10:2702. [PMID: 31849867 PMCID: PMC6901971 DOI: 10.3389/fmicb.2019.02702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/07/2019] [Indexed: 12/31/2022] Open
Abstract
Listeria monocytogenes is a Gram-positive bacterium that can be found in a broad range of environments, including soil, food, animals, and humans. L. monocytogenes can cause a foodborne disease manifesting as sepsis and meningo-encephalitis. To evaluate signals of selection within the core genome of neuroinvasive L. monocytogenes strains, we sequenced 122 L. monocytogenes strains from cerebrospinal fluid (CSF) of Dutch meningitis patients and performed a genome-wide analysis using Tajima’s D and ω (dN/dS). We also evaluated the residual variation intolerance score (RVIS), a computationally less demanding methodology, to identify loci under selection. Results show that the large genetic distance between the listerial lineages influences the Tajima’s D and ω (dN/dS) outcome. Within genetic lineages we detected signals of selection in 6 of 2327 loci (<1%), which were replicated in an external cohort of 105 listerial CSF isolates from France. Functions of identified loci under selection were within metabolism pathways (lmo2476, encoding aldose 1-epimerase), putative antimicrobial resistance mechanisms (lmo1855, encoding PBPD3), and virulence factors (lmo0549, internalin-like protein; lmo1482, encoding comEC). RVIS over the two genetic lineages showed signals of selection in internalin-like proteins loci potentially involved in pathogen-host interaction (lmo0549, lmo0610, and lmo1290). Our results show that RVIS can be used to detect bacterial loci under selection.
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Affiliation(s)
- Bart Ferwerda
- Department of Neurology, Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Mylène M Maury
- Institut Pasteur, Biology of Infection Unit, Inserm U1117 and National Reference Centre - WHO Collaborating Centre for Listeria, Paris, France
| | - Mathijs C Brouwer
- Department of Neurology, Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Lukas Hafner
- Institut Pasteur, Biology of Infection Unit, Inserm U1117 and National Reference Centre - WHO Collaborating Centre for Listeria, Paris, France
| | - Arie van der Ende
- Department of Medical Microbiology, Amsterdam Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.,Netherlands Reference Laboratory for Bacterial Meningitis, Amsterdam UMC/RIVM, University of Amsterdam, Amsterdam, Netherlands
| | - Stephen Bentley
- Parasites and Microbes, Wellcome Sanger Institute, Cambridge, United Kingdom
| | - Marc Lecuit
- Institut Pasteur, Biology of Infection Unit, Inserm U1117 and National Reference Centre - WHO Collaborating Centre for Listeria, Paris, France.,Paris Descartes University, Division of Infectious Diseases and Tropical Medicine, Necker-Enfants Malades University Hospital, Paris, France
| | - Diederik van de Beek
- Department of Neurology, Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
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11
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Silva S, Matz L, Elmassry MM, San Francisco MJ. Characteristics of monolayer formation in vitro by the chytrid Batrachochytrium dendrobatidis. Biofilm 2019; 1:100009. [PMID: 33447796 PMCID: PMC7798445 DOI: 10.1016/j.bioflm.2019.100009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/26/2019] [Accepted: 10/24/2019] [Indexed: 12/01/2022] Open
Abstract
Batrachochytrium dendrobatidis is a globally distributed generalist pathogen that has driven many amphibian populations to extinction. The life cycle of B. dendrobatidis has two main cell types, motile zoospores, and sessile reproductive sporangia. When grown in a nutrient-rich liquid medium, B. dendrobatidis forms aggregates of sporangia that transition into monolayers on surfaces and at the air-liquid interface. Pathogenic microorganisms use biofilms as mechanisms of group interactions to survive under harsh conditions in the absence of a suitable host. We used fluorescent and electron microscopy, crystal violet, transcriptomic, and gas chromatographic analyses to understand the characteristics of B. dendrobatidis monolayers. The cell-free monolayer fraction showed the presence of extracellular ribose, mannose, xylose, galactose, and glucose. Transcriptome analysis showed that 27%, 26%, and 4% of the genes were differentially expressed between sporangia/zoospores, monolayer/zoospores, and sporangia/monolayer pairs respectively. In pond water studies, zoospores developed into sporangia and formed floating aggregates at the air-water interface and attached film on the bottom of growth flasks. We propose that B. dendrobatidis can form surface-attached monolayers in nutrient-rich environments and aggregates of sporangia in nutrient-poor aquatic systems. These monolayers and aggregates may facilitate dispersal and survival of the fungus in the absence of a host. We provide evidence for using a combination of plant-based chemicals, allicin, gingerol, and curcumin as potential anti-chytrid drugs to mitigate chytridiomycosis.
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Affiliation(s)
- Shalika Silva
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, USA
| | - Lisa Matz
- Baylor College of Medicine, Houston, TX, USA
| | - Moamen M Elmassry
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, USA
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12
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Mechanisms of response to pH shock in microbial fermentation. Bioprocess Biosyst Eng 2019; 43:361-372. [PMID: 31650352 DOI: 10.1007/s00449-019-02232-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/13/2019] [Indexed: 10/25/2022]
Abstract
The following review highlights pH shock, a novel environmental factor, as a tool for the improvement of fermentation production. The aim of this review is to introduce some recent original studies on the enhancement of microbial fermentation production by pH shock. Another purpose of this review is to improve the understanding of the processes that underlie physiological and genetic differences, which will facilitate future research on the improvement of fermentation production and reveal the associated molecular mechanisms. This understanding will simultaneously promote the application of this strategy to other microbial fermentation systems. Furthermore, improvement of the cellular tolerance of genetically engineered bacteria can also be a new field of research in the future to enhance fermentation production.
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Impact of Combined Acidic and Hyperosmotic Shock Conditions on the Proteome of Listeria monocytogenesATCC 19115 in a Time-Course Study. J FOOD QUALITY 2019. [DOI: 10.1155/2019/3075028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Listeria monocytogenescan cause listeriosis in humans through consumption of contaminated food and can adapt to and grow under a wide array of physiochemical stresses. Consequently, it causes persistent food safety issues and requires vigilant sanitation processes to be in place, especially for the manufacture of high-risk food products. In this study, the global proteomic responses of the food-borne pathogenL. monocytogenesstrain ATCC 19115 were determined when exposed to nonthermal inactivation. This process was examined in the early stationary growth phase with the strain placed under simultaneous exposure to low pH (pH 3.5) and high salinity (aw0.900, 14% NaCl). Proteomic responses, measured using iTRAQ techniques, were conducted over a time course (5 min, 30 min, and 1 h at 25°C). The enumeration results showed that, at 5 min, cells underwent initial rapid inactivation by 1.2 log units and 2.5 log units after 30 min, and after that, culturability remained stable when sampled at 1 h. From the iTRAQ results, the proteome level changes that occur rapidly during the inactivation process mainly affected prophage, cell defense/detoxification, carbohydrate-related metabolism, transporter proteins, phosphotransferase systems, cell wall biogenesis, and specific cell surface proteins. Pathway map analysis revealed that several pathways are affected including pentose and glucuronate interconversions, glycolysis/gluconeogenesis, pyruvate metabolism, valine, leucine and isoleucine biosynthesis, oxidative phosphorylation, and proteins associated with bacterial invasion of epithelial cells and host survival. Proteome profiling provided a better understanding of the physiological responses of this pathogen to adapt to lethal nonthermal environments and indicates the need to improve food processing and storage methods, especially for non- or minimally thermally processed foods.
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Ling HL, Rahmat Z, Bakar FDA, Murad AMA, Illias RM. Secretome analysis of alkaliphilic bacterium Bacillus lehensis G1 in response to pH changes. Microbiol Res 2018; 215:46-54. [PMID: 30172308 DOI: 10.1016/j.micres.2018.06.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 04/18/2018] [Accepted: 06/16/2018] [Indexed: 12/27/2022]
Abstract
Bacillus lehensis G1 is an alkaliphilic bacterium that is capable of surviving in environments up to pH 11. Secretome related to bacterial acclimation in alkaline environment has been less studied compared to cytoplasmic and membrane proteome. The aim of this study was to gain better understanding of bacterial acclimation to alkaline media through analyzing extracellular proteins of B. lehensis. The pH range for B. lehensis growth was conducted, and two-dimensional electrophoresis and MALDI-TOF/TOF MS analysis were conducted to characterize changes in protein profiling in B. lehensis cultured at pH 8 and pH 11 when compared with those cultured at pH 10 (optimal growth pH). B. lehensis could grow well at pH ranging from 8 to 11 in which the bacteria showed to posses thinner flagella at pH 11. Proteomic analyses demonstrated that five proteins were up-regulated and 13 proteins were down-regulated at pH 8, whereas at pH 11, 14 proteins were up-regulated and 8 were down-regulated. Majority of the differentially expressed proteins were involved in the cell wall, main glycolytic pathways, the metabolism of amino acids and related molecules and some proteins of unknown function. A total of 40 differentially expressed protein spots corresponding to 33 proteins were identified; including GlcNAc-binding protein A, chitinase, endopeptidase lytE, flagellar hook-associated proteins and enolase. These proteins may play important roles in acclimation to alkaline media via reallocation of cell wall structure and changes to cell surface glycolytic enzymes, amino acid metabolism, flagellar hook-associated proteins and chaperones to sustain life under pH-stressed conditions.
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Affiliation(s)
- How Lie Ling
- Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Zaidah Rahmat
- Department of Biotechnology and Medical Engineering, Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Farah Diba Abu Bakar
- School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Abdul Munir Abdul Murad
- School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Rosli Md Illias
- Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
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Vivant AL, Desneux J, Pourcher AM, Piveteau P. Transcriptomic Analysis of the Adaptation of Listeria monocytogenes to Lagoon and Soil Matrices Associated with a Piggery Environment: Comparison of Expression Profiles. Front Microbiol 2017; 8:1811. [PMID: 29018416 PMCID: PMC5623016 DOI: 10.3389/fmicb.2017.01811] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 09/05/2017] [Indexed: 12/20/2022] Open
Abstract
Understanding how Listeria monocytogenes, the causative agent of listeriosis, adapts to the environment is crucial. Adaptation to new matrices requires regulation of gene expression. To determine how the pathogen adapts to lagoon effluent and soil, two matrices where L. monocytogenes has been isolated, we compared the transcriptomes of L. monocytogenes CIP 110868 20 min and 24 h after its transfer to effluent and soil extract. Results showed major variations in the transcriptome of L. monocytogenes in the lagoon effluent but only minor modifications in the soil. In both the lagoon effluent and in the soil, genes involved in mobility and chemotaxis and in the transport of carbohydrates were the most frequently represented in the set of genes with higher transcript levels, and genes with phage-related functions were the most represented in the set of genes with lower transcript levels. A modification of the cell envelop was only found in the lagoon environment. Finally, the differential analysis included a large proportion of regulators, regulons, and ncRNAs.
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Affiliation(s)
- Anne-Laure Vivant
- UR OPAALE, IRSTEA, Rennes, France
- Université Bretagne Loire, Rennes, France
| | - Jeremy Desneux
- UR OPAALE, IRSTEA, Rennes, France
- Université Bretagne Loire, Rennes, France
| | | | - Pascal Piveteau
- Agroécologie, AgroSup Dijon, Institut National de la Recherche Agronomique, Université Bourgogne Franche-Comté, Dijon, France
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16
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Li Z, Pérez-Osorio A, Wang Y, Eckmann K, Glover WA, Allard MW, Brown EW, Chen Y. Whole genome sequencing analyses of Listeria monocytogenes that persisted in a milkshake machine for a year and caused illnesses in Washington State. BMC Microbiol 2017; 17:134. [PMID: 28619007 PMCID: PMC5472956 DOI: 10.1186/s12866-017-1043-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/03/2017] [Indexed: 11/25/2022] Open
Abstract
Background In 2015, in addition to a United States multistate outbreak linked to contaminated ice cream, another outbreak linked to ice cream was reported in the Pacific Northwest of the United States. It was a hospital-acquired outbreak linked to milkshakes, made from contaminated ice cream mixes and milkshake maker, served to patients. Here we performed multiple analyses on isolates associated with this outbreak: pulsed-field gel electrophoresis (PFGE), whole genome single nucleotide polymorphism (SNP) analysis, species-specific core genome multilocus sequence typing (cgMLST), lineage-specific cgMLST and whole genome-specific MLST (wgsMLST)/outbreak-specific cgMLST. We also analyzed the prophages and virulence genes. Results The outbreak isolates belonged to sequence type 1038, clonal complex 101, genetic lineage II. There were no pre-mature stop codons in inlA. Isolates contained Listeria Pathogenicity Island 1 and multiple internalins. PFGE and multiple whole genome sequencing (WGS) analyses all clustered together food, environmental and clinical isolates when compared to outgroup from the same clonal complex, which supported the finding that L. monocytogenes likely persisted in the soft serve ice cream/milkshake maker from November 2014 to November 2015 and caused 3 illnesses, and that the outbreak strain was transmitted between two ice cream production facilities. The whole genome SNP analysis, one of the two species-specific cgMLST, the lineage II-specific cgMLST and the wgsMLST/outbreak-specific cgMLST showed that L. monocytogenes cells persistent in the milkshake maker for a year formed a unique clade inside the outbreak cluster. This clustering was consistent with the cleaning practice after the outbreak was initially recognized in late 2014 and early 2015. Putative prophages were conserved among prophage-containing isolates. The loss of a putative prophage in two isolates resulted in the loss of the AscI restriction site in the prophage, which contributed to their AscI-PFGE banding pattern differences from other isolates. Conclusions The high resolution of WGS analyses allowed the differentiation of epidemiologically unrelated isolates, as well as the elucidation of the microevolution and persistence of isolates within the scope of one outbreak. We applied a wgsMLST scheme which is essentially the outbreak-specific cgMLST. This scheme can be combined with lineage-specific cgMLST and species-specific cgMLST to maximize the resolution of WGS.
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Affiliation(s)
- Zhen Li
- Washington State Department of Health, Public Health Laboratories, Shoreline, Washington, USA
| | - Ailyn Pérez-Osorio
- Washington State Department of Health, Public Health Laboratories, Shoreline, Washington, USA
| | - Yu Wang
- Center for Food Safety and Applied Nutrition, Food and Drug Administration, College Park, MD, USA
| | - Kaye Eckmann
- Washington State Department of Health, Public Health Laboratories, Shoreline, Washington, USA
| | - William A Glover
- Washington State Department of Health, Public Health Laboratories, Shoreline, Washington, USA
| | - Marc W Allard
- Center for Food Safety and Applied Nutrition, Food and Drug Administration, College Park, MD, USA
| | - Eric W Brown
- Center for Food Safety and Applied Nutrition, Food and Drug Administration, College Park, MD, USA
| | - Yi Chen
- Center for Food Safety and Applied Nutrition, Food and Drug Administration, College Park, MD, USA.
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17
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Dyla M, Andersen JL, Kjaergaard M, Birkedal V, Terry DS, Altman RB, Blanchard SC, Nissen P, Knudsen CR. Engineering a Prototypic P-type ATPase Listeria monocytogenes Ca(2+)-ATPase 1 for Single-Molecule FRET Studies. Bioconjug Chem 2016; 27:2176-87. [PMID: 27501274 DOI: 10.1021/acs.bioconjchem.6b00387] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Approximately 30% of the ATP generated in the living cell is utilized by P-type ATPase primary active transporters to generate and maintain electrochemical gradients across biological membranes. P-type ATPases undergo large conformational changes during their functional cycle to couple ATP hydrolysis in the cytoplasmic domains to ion transport across the membrane. The Ca(2+)-ATPase from Listeria monocytogenes, LMCA1, was found to be a suitable model of P-type ATPases and was engineered to facilitate single-molecule FRET studies of transport-related structural changes. Mutational analyses of the endogenous cysteine residues in LMCA1 were performed to reduce background labeling without compromising activity. Pairs of cysteines were introduced into the optimized low-reactivity background, and labeled with maleimide derivatives of Cy3 and Cy5 resulting in site-specifically double-labeled protein with moderate activity. Ensemble and confocal single-molecule FRET studies revealed changes in FRET distribution related to structural changes during the transport cycle, consistent with those observed by X-ray crystallography for the sarco/endoplasmic reticulum Ca(2+) ATPase (SERCA). Notably, the cytosolic headpiece of LMCA1 was found to be distinctly more compact in the E1 state than in the E2 state. Thus, the established experimental system should allow future real-time FRET studies of the structural dynamics of LMCA1 as a representative P-type ATPase.
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Affiliation(s)
- Mateusz Dyla
- Centre for Membrane Pumps in Cells and Disease - PUMPKIN. Danish National Research Foundation & Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, and Department of Molecular Biology and Genetics, Aarhus University , Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark.,Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Jacob Lauwring Andersen
- Centre for Membrane Pumps in Cells and Disease - PUMPKIN. Danish National Research Foundation & Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, and Department of Molecular Biology and Genetics, Aarhus University , Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark
| | - Magnus Kjaergaard
- Centre for Membrane Pumps in Cells and Disease - PUMPKIN. Danish National Research Foundation & Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, and Department of Molecular Biology and Genetics, Aarhus University , Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark.,Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.,AIAS, Aarhus Institute of Advanced Studies, Aarhus University , DK-8000 Aarhus C, Denmark
| | - Victoria Birkedal
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Daniel S Terry
- Department of Physiology and Biophysics, Weill Cornell Medicine , New York, New York 10021, United States
| | - Roger B Altman
- Department of Physiology and Biophysics, Weill Cornell Medicine , New York, New York 10021, United States
| | - Scott C Blanchard
- Department of Physiology and Biophysics, Weill Cornell Medicine , New York, New York 10021, United States
| | - Poul Nissen
- Centre for Membrane Pumps in Cells and Disease - PUMPKIN. Danish National Research Foundation & Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, and Department of Molecular Biology and Genetics, Aarhus University , Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark.,Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Charlotte R Knudsen
- Centre for Membrane Pumps in Cells and Disease - PUMPKIN. Danish National Research Foundation & Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, and Department of Molecular Biology and Genetics, Aarhus University , Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark
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18
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Shen Q, Pandare P, Soni KA, Nannapaneni R, Mahmoud BS, Sharma CS. Influence of temperature on alkali stress adaptation in Listeria monocytogenes. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Rychli K, Grunert T, Ciolacu L, Zaiser A, Razzazi-Fazeli E, Schmitz-Esser S, Ehling-Schulz M, Wagner M. Exoproteome analysis reveals higher abundance of proteins linked to alkaline stress in persistent Listeria monocytogenes strains. Int J Food Microbiol 2015; 218:17-26. [PMID: 26594790 DOI: 10.1016/j.ijfoodmicro.2015.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 11/04/2015] [Accepted: 11/08/2015] [Indexed: 01/24/2023]
Abstract
The foodborne pathogen Listeria monocytogenes, responsible for listeriosis a rare but severe infection disease, can survive in the food processing environment for month or even years. So-called persistent L. monocytogenes strains greatly increase the risk of (re)contamination of food products, and are therefore a great challenge for food safety. However, our understanding of the mechanism underlying persistence is still fragmented. In this study we compared the exoproteome of three persistent strains with the reference strain EGDe under mild stress conditions using 2D differential gel electrophoresis. Principal component analysis including all differentially abundant protein spots showed that the exoproteome of strain EGDe (sequence type (ST) 35) is distinct from that of the persistent strain R479a (ST8) and the two closely related ST121 strains 4423 and 6179. Phylogenetic analyses based on multilocus ST genes showed similar grouping of the strains. Comparing the exoproteome of strain EGDe and the three persistent strains resulted in identification of 22 differentially expressed protein spots corresponding to 16 proteins. Six proteins were significantly increased in the persistent L. monocytogenes exoproteomes, among them proteins involved in alkaline stress response (e.g. the membrane anchored lipoprotein Lmo2637 and the NADPH dehydrogenase NamA). In parallel the persistent strains showed increased survival under alkaline stress, which is often provided during cleaning and disinfection in the food processing environments. In addition, gene expression of the proteins linked to stress response (Lmo2637, NamA, Fhs and QoxA) was higher in the persistent strain not only at 37 °C but also at 10 °C. Invasion efficiency of EGDe was higher in intestinal epithelial Caco2 and macrophage-like THP1 cells compared to the persistent strains. Concurrently we found higher expression of proteins involved in virulence in EGDe e.g. the actin-assembly-inducing protein ActA and the surface virulence associated protein SvpA. Furthermore proteins involved in cell wall modification, such as the lipoteichonic acid primase LtaP and the N-acetylmuramoyl-l-alanine amidase (Lmo2591) are more abundant in EGDe than in the persistent strains and could indirectly contribute to virulence. In conclusion this study provides information about a set of proteins that could potentially support survival of L. monocytogenes in abiotic niches in food processing environments. Based on these data, a more detailed analysis of the role of the identified proteins under stresses mimicking conditions in food producing environment is essential for further elucidate the mechanism of the phenomenon of persistence of L. monocytogenes.
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Affiliation(s)
- Kathrin Rychli
- Institute for Milk Hygiene, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Tom Grunert
- Functional Microbiology, Institute of Microbiology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Luminita Ciolacu
- Institute for Milk Hygiene, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria; "Dunarea de Jos" University of Galaţi, 47 Domneasca St., 800008 Galaţi, Romania.
| | - Andreas Zaiser
- Institute for Milk Hygiene, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Ebrahim Razzazi-Fazeli
- VetCORE facility for research, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Stephan Schmitz-Esser
- Institute for Milk Hygiene, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Monika Ehling-Schulz
- Functional Microbiology, Institute of Microbiology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Martin Wagner
- Institute for Milk Hygiene, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
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20
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He L, Deng QL, Chen MT, Wu QP, Lu YJ. Proteomics analysis of Listeria monocytogenes ATCC 19115 in response to simultaneous triple stresses. Arch Microbiol 2015; 197:833-41. [PMID: 25990453 DOI: 10.1007/s00203-015-1116-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/09/2015] [Accepted: 05/01/2015] [Indexed: 10/23/2022]
Abstract
Listeria monocytogenes can cause listeriosis in humans through consumption of contaminated food. L. monocytogenes can adapt and grow in a vast array of physiochemical stresses in the food production environment. In this study, we performed a proteomics strategy in order to investigate how L. monocytogenes survives with a simultaneous exposure to low pH, high salinity and low temperature. The results showed that the adaptation processes mainly affected the biochemical pathways related to protein synthesis, oxidative stress, cell wall and nucleotide metabolism. Interestingly, enzymes involved in the carbohydrate metabolism of energy, such as glycolysis and pentose phosphate pathway, were derepressed due to the down-regulation of CodY, a global transcriptional repressor. The down-regulation of CodY, together with the up-regulation of carbohydrate metabolism enzymes, likely leads to the accumulation of pyruvate and further to the activation of fatty acid synthesis pathway. Proteomics profiling offered a better understanding of the physiological responses of this pathogen to adapt to harsh environment and would hopefully contribute to improving the food-processing and storage methods.
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Affiliation(s)
- Lei He
- School of Life Sciences, Sun Yat-sen University, 135 West Xingang Road, Guangzhou, 510275, People's Republic of China
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21
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Calcium binding proteins and calcium signaling in prokaryotes. Cell Calcium 2014; 57:151-65. [PMID: 25555683 DOI: 10.1016/j.ceca.2014.12.006] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 11/20/2022]
Abstract
With the continued increase of genomic information and computational analyses during the recent years, the number of newly discovered calcium binding proteins (CaBPs) in prokaryotic organisms has increased dramatically. These proteins contain sequences that closely resemble a variety of eukaryotic calcium (Ca(2+)) binding motifs including the canonical and pseudo EF-hand motifs, Ca(2+)-binding β-roll, Greek key motif and a novel putative Ca(2+)-binding domain, called the Big domain. Prokaryotic CaBPs have been implicated in diverse cellular activities such as division, development, motility, homeostasis, stress response, secretion, transport, signaling and host-pathogen interactions. However, the majority of these proteins are hypothetical, and only few of them have been studied functionally. The finding of many diverse CaBPs in prokaryotic genomes opens an exciting area of research to explore and define the role of Ca(2+) in organisms other than eukaryotes. This review presents the most recent developments in the field of CaBPs and novel advancements in the role of Ca(2+) in prokaryotes.
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22
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Stress response and adaptation of Listeria monocytogenes 08-5923 exposed to a sublethal dose of carnocyclin A. Appl Environ Microbiol 2014; 80:3835-41. [PMID: 24747893 DOI: 10.1128/aem.00350-14] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Carnocyclin A (CCLA) is an antimicrobial peptide produced by Carnobacterium maltaromaticum ATCC PTA-5313, which can be used to control the growth of Listeria monocytogenes in ready-to-eat meat products. The aim of this research was to elucidate the cellular responses of L. monocytogenes 08-5923 exposed to a sublethal dose of CCLA. Microarray, quantitative reverse transcription-PCR, tandem mass spectrometry, and electron microscopy were used to investigate the alteration in gene expression, protein production, and morphological changes in cells of Listeria following treatment with CCLA. The genes involved in metabolism (baiE, trn, and pykA), cell wall synthesis (murZ and dacB2), and cell division (clpE and divIVA) were upregulated following a 15-min exposure to CCLA as a result of stress responses. Genes involved in cell division, cell wall synthesis, flagellar synthesis, and metabolism were downregulated after 4 h as a result of adaptation. Analysis of total soluble proteins confirmed the downregulation of pykA and gnd after 4 h of exposure to CCLA. The absence of flagella was observed in L. monocytogenes following 30 h of exposure to CCLA. A sublethal dose of CCLA induced adaptation in L. monocytogenes 08-5923 by inhibition of expression of genes and proteins critical for synthesis of cell wall structures and maintaining metabolic functions. Both the mannose- and cellobiose-specific phosphotransferase systems could be targets for CCLA.
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23
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Paredi G, Sentandreu MA, Mozzarelli A, Fadda S, Hollung K, de Almeida AM. Muscle and meat: New horizons and applications for proteomics on a farm to fork perspective. J Proteomics 2013; 88:58-82. [DOI: 10.1016/j.jprot.2013.01.029] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/31/2013] [Indexed: 11/16/2022]
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Kotšubei A, Gorgel M, Morth JP, Nissen P, Andersen JL. Probing determinants of cyclopiazonic acid sensitivity of bacterial Ca2+-ATPases. FEBS J 2013; 280:5441-9. [PMID: 23621633 DOI: 10.1111/febs.12310] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 04/22/2013] [Accepted: 04/24/2013] [Indexed: 01/15/2023]
Abstract
Cyclopiazonic acid (CPA) is a specific and potent inhibitor of the sarcoplasmic reticulum Ca(2+)-ATPase 1a (SERCA1a). Despite high sequence similarity to SERCA1a, Listeria monocytogenes Ca(2+)-ATPase 1 (LMCA1) is not inhibited by CPA. To test whether a CPA binding site could be created while maintaining the functionality of the ATPase we targeted four amino acid positions in LMCA1 for mutational studies based on a multiple sequence alignment of SERCA-like Ca(2+)-ATPases and structural analysis of the CPA site. The identification of CPA-sensitive gain-of-function mutants pinpointed key determinants of the CPA binding site. The importance of these determinants was further underscored by the characterization of the CPA sensitivity of two additional bacterial Ca(2+)-ATPases from Lactococcus lactis and Bacillus cereus. The CPA sensitivity was predicted from their sequence compared with the LMCA1 results, and this was experimentally confirmed. Interestingly, a cluster of Lactococcus bacteria applied in the production of fermented cheese display Ca(2+)-ATPases that are predictably CPA insensitive and may originate from their coexistence with CPA-producing Penicillum and Aspergillus fungi in the cheese. The differences between bacterial and mammalian binding pockets encompassing the CPA site suggest that CPA derivatives that are specific for bacteria or other pathogens can be developed.
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Affiliation(s)
- Aljona Kotšubei
- Centre for Membrane Pumps in Cells and Disease - PUMPKIN, Aarhus University, Denmark; Department of Molecular Biology and Genetics, Aarhus University, Denmark; Department of Gene Technology, Tallinn University of Technology, Estonia
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Markkula A, Lindström M, Johansson P, Björkroth J, Korkeala H. Roles of four putative DEAD-box RNA helicase genes in growth of Listeria monocytogenes EGD-e under heat, pH, osmotic, ethanol, and oxidative stress conditions. Appl Environ Microbiol 2012; 78:6875-82. [PMID: 22820328 PMCID: PMC3457484 DOI: 10.1128/aem.01526-12] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/13/2012] [Indexed: 01/21/2023] Open
Abstract
To examine the role of the four putative DEAD-box RNA helicase genes of Listeria monocytogenes EGD-e in stress tolerance, the growth of the Δlmo0866, Δlmo1246, Δlmo1450, and Δlmo1722 deletion mutant strains at 42.5°C, at pH 5.6 or pH 9.4, in 6% NaCl, in 3.5% ethanol, and in 5 mM H(2)O(2) was studied. Restricted growth of the Δlmo0866 deletion mutant strain in 3.5% ethanol suggests that Lmo0866 contributes to ethanol stress tolerance of L. monocytogenes EGD-e. The Δlmo1450 mutant strain showed negligible growth at 42.5°C, at pH 9.4, and in 5 mM H(2)O(2) and a lower maximum growth temperature than the wild-type EGD-e, suggesting that Lmo1450 is involved in the tolerance of L. monocytogenes EGD-e to heat, alkali, and oxidative stresses. The altered stress tolerance of the Δlmo0866 and Δlmo1450 deletion mutant strains did not correlate with changes in relative expression levels of lmo0866 and lmo1450 genes under corresponding stresses, suggesting that Lmo0866- and Lmo1450-dependent tolerance to heat, alkali, ethanol, or oxidative stress is not regulated at the transcriptional level. Growth of the Δlmo1246 and Δlmo1722 deletion mutant strains did not differ from that of the wild-type EGD-e under any of the conditions tested, suggesting that Lmo1246 and Lmo1722 have no roles in the growth of L. monocytogenes EGD-e under heat, pH, osmotic, ethanol, or oxidative stress. This study shows that the putative DEAD-box RNA helicase genes lmo0866 and lmo1450 play important roles in tolerance of L. monocytogenes EGD-e to ethanol, heat, alkali, and oxidative stresses.
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Affiliation(s)
- Annukka Markkula
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
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The effects of pH oscillation on Lactobacillus rhamnosus batch cultivation. Appl Microbiol Biotechnol 2012; 95:1265-73. [DOI: 10.1007/s00253-012-3946-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 01/27/2012] [Accepted: 02/06/2012] [Indexed: 01/08/2023]
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Feng J, Billal DS, Lupien A, Racine G, Winstall E, Légaré D, Leprohon P, Ouellette M. Proteomic and transcriptomic analysis of linezolid resistance in Streptococcus pneumoniae. J Proteome Res 2011; 10:4439-52. [PMID: 21875071 DOI: 10.1021/pr200221s] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Linezolid is an oxazolidinone antibiotic that inhibits the initiation of translation. Although resistance to linezolid is an uncommon event, it has been reported in clinical isolates. The genome sequence of Streptococcus pneumoniae linezolid-resistant mutants recently revealed mutations associated with resistance. A proteomic and transcriptomic screen now reveals a possible increase in the metabolism and transport of carbohydrates in these linezolid-resistant S. pneumoniae mutants. Several glycolytic proteins were shown to be overexpressed in the resistant strains, along with other enzymes and transporters involved in the metabolism of sugars. An increase in energy needs appears to be required to sustain extended levels of resistance to linezolid as the disruption of two ABC transporters putatively involved in the import of carbohydrates leads to a 2-fold sensitization to linezolid. Furthermore, the disruption of the catabolite control protein A, a regulator of the metabolism of sugars whose expression is highly increased in one linezolid-resistant mutant, resulted in a 2-fold increase in linezolid susceptibility. This global scale analysis of gene and protein expression profiling highlights metabolism alterations associated with linezolid resistance in S. pneumoniae.
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Affiliation(s)
- Jie Feng
- Centre de Recherche en Infectiologie and Plate-forme §Protéomique du Centre de génomique de Québec, Université Laval, CHUQ, Pavillon CHUL, 2705 boulevard Laurier, Quebec, QC, Canada, G1V 4G2
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The effect of temperature and pH gradients on Lactobacillus rhamnosus gene expression of stress-related genes. Bioprocess Biosyst Eng 2011; 34:1169-76. [DOI: 10.1007/s00449-011-0568-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 06/30/2011] [Indexed: 11/25/2022]
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Paradela A, Mariscotti JF, Navajas R, Ramos-Fernández A, Albar JP, García-del Portillo F. Inverse regulation in the metabolic genes pckA and metE revealed by proteomic analysis of the Salmonella RcsCDB regulon. J Proteome Res 2011; 10:3386-98. [PMID: 21657791 DOI: 10.1021/pr101294v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The RcsC, RcsD, and RcsB proteins compose a system used by enteric bacteria to sense envelope stress. Signal transmission occurs from the sensor RcsC to the transcriptional regulator RcsB. Accessory proteins, such as IgaA, are known to adjust the response level. In a previous transcriptomic study, we uncovered 85 genes differentially expressed in Salmonella enterica serovar Typhimurium igaA mutants. Here, we extended these observations to proteomics by performing differential isotope-coded protein labeling (ICPL) followed by liquid chromatography-electrospray ionization tandem mass spectrometry. Five-hundred five proteins were identified and quantified, with 75 of them displaying significant changes in response to alterations in the RcsCDB system. Divergent expression at the RNA and protein level was observed for the metabolic genes pckA and metE, involved in gluconeogenesis and methionine synthesis, respectively. When analyzed in diverse environmental conditions, including the intracellular niche of eukaryotic cells, inverse regulation was more evident for metE and in bacteria growing in defined minimal medium or to stationary phase. The RcsCDB system was also shown to repress the synthesis of the small RNA FnrS, previously reported to modulate metE expression. Collectively, these findings provide new insights into post-transcriptional regulatory mechanisms involving the RcsCDB system and its control over metabolic functions.
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Affiliation(s)
- Alberto Paradela
- Laboratorio de Proteómica, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
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Andersen JL, Gourdon P, Møller JV, Morth JP, Nissen P. Crystallization and preliminary structural analysis of the Listeria monocytogenes Ca(2+)-ATPase LMCA1. Acta Crystallogr Sect F Struct Biol Cryst Commun 2011; 67:718-22. [PMID: 21636921 DOI: 10.1107/s174430911101548x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 04/24/2011] [Indexed: 11/10/2022]
Abstract
Ca(2+)-ATPases are ATP-driven membrane pumps that are responsible for the transport of Ca(2+) ions across the membrane. The Listeria monocytogenes Ca(2+)-ATPase LMCA1 has been crystallized in the Ca(2+)-free state stabilized by AlF(4)(-), representing an occluded E2-P(i)-like state. The crystals belonged to space group P2(1)2(1)2 and a complete data set extending to 4.3 Å resolution was collected. A molecular-replacement solution was obtained, revealing type I packing of the molecules in the crystal. Unbiased electron-density features were observed for AlF(4)(-) and for shifts of the helices, which were indicative of a reliable structure determination.
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Affiliation(s)
- Jacob Lauwring Andersen
- Centre for Membrane Pumps in Cells and Disease-PUMPKIN, University of Aarhus, Gustav Wieds Vej 10C, Aarhus C, Denmark
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Michel E, Stephan R, Tasara T. The lmo0501 gene coding for a putative transcription activator protein in Listeria monocytogenes promotes growth under cold, osmotic and acid stress conditions. Food Microbiol 2011; 28:1261-5. [PMID: 21839374 DOI: 10.1016/j.fm.2011.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 03/16/2011] [Accepted: 05/06/2011] [Indexed: 10/18/2022]
Abstract
In Listeria monocytogenes EGDe, the lmo0501 gene locus encodes a protein similar to the mannitol transcription regulator (MltR) protein in Bacillus subtilis and Bacillus stearothermophilus. In this study we investigated its functional role in L. monocytogenes EGDe cells in view of growth under different stress conditions. Increased lmo0501 gene expression at mRNA level was detected in response to cold, osmotic and organic acid stress exposure. An EGDe Δlmo0501 mutant strain was diminished in growth compared to the wild type strain in minimal defined medium containing either glucose or fructose, as carbon sources. Growth of the lmo0501 null mutant was retarded growth under cold (4 °C), salt (NaCl) and organic acid stress conditions relative to the parental wild type strain. Our results confirm the role of the lmo0501 gene in adaptation of L. monocytogenes cells to food preservation stress conditions as well as to the efficient utilization of glucose and fructose as carbon sources.
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Affiliation(s)
- Evelyne Michel
- Institute for Food Safety and Hygiene, Vetsuisse Faculty University of Zurich, Winterthurerstr. 272, CH-8057 Zurich, Switzerland
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Soni KA, Nannapaneni R, Tasara T. The contribution of transcriptomic and proteomic analysis in elucidating stress adaptation responses of Listeria monocytogenes. Foodborne Pathog Dis 2011; 8:843-52. [PMID: 21495855 DOI: 10.1089/fpd.2010.0746] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The foodborne transmission of Listeria monocytogenes requires physiological adaptation to various conditions, including the cold, osmotic, heat, acid, alkaline, and oxidative stresses, associated with food hygiene, processing, and preservation measures. We review the current knowledge on the molecular stress adaptation responses in L. monocytogenes cells as revealed through transcriptome, proteome, genetic, and physiological analysis. The adaptation of L. monocytogenes to stress exposure is achieved through global expression changes in a large number of cellular components. In addition, the cross-protection of L. monocytogenes exposed to different stress environments might be conferred through various cellular machineries that seem to be commonly activated by the different stresses. To assist in designing L. monocytogenes mitigation strategies for ready-to-eat food products, further experiments are warranted to specifically evaluate the effects of food composition, additives, preservatives, and processing technologies on the modulation of L. monocytogenes cellular components in response to specific stresses.
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Affiliation(s)
- Kamlesh A Soni
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi 39762, USA
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Lee K, Rho BS, Pi K, Kim HJ, Choi YJ. Proteomic analysis of protein expression in Lactobacillus plantarum in response to alkaline stress. J Biotechnol 2011; 153:1-7. [DOI: 10.1016/j.jbiotec.2011.02.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2010] [Revised: 02/13/2011] [Accepted: 02/21/2011] [Indexed: 10/18/2022]
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Faxén K, Andersen JL, Gourdon P, Fedosova N, Morth JP, Nissen P, Møller JV. Characterization of a Listeria monocytogenes Ca(2+) pump: a SERCA-type ATPase with only one Ca(2+)-binding site. J Biol Chem 2011; 286:1609-17. [PMID: 21047776 PMCID: PMC3020769 DOI: 10.1074/jbc.m110.176784] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 10/21/2010] [Indexed: 11/06/2022] Open
Abstract
We have characterized a putative Ca(2+)-ATPase from the pathogenic bacterium Listeria monocytogenes with the locus tag lmo0841. The purified and detergent-solubilized protein, which we have named Listeria monocytogenes Ca(2+)-ATPase 1 (LMCA1), performs a Ca(2+)-dependent ATP hydrolysis and actively transports Ca(2+) after reconstitution in dioleoylphosphatidyl-choline vesicles. Despite a high sequence similarity to the sarcoplasmic reticulum Ca(2+)-ATPase (SERCA1a) and plasma membrane Ca(2+)-ATPase (PMCA), LMCA1 exhibits important biochemical differences such as a low Ca(2+) affinity (K(0.5) ∼80 μm) and a high pH optimum (pH ∼9). Mutational studies indicate that the unusually high pH optimum can be partially ascribed to the presence of an arginine residue (Arg-795), corresponding in sequence alignments to the Glu-908 position at Ca(2+) binding site I of rabbit SERCA1a, but probably with an exposed position in LMCA1. The arginine is characteristic of a large group of putative bacterial Ca(2+)-ATPases. Moreover, we demonstrate that H(+) is countertransported with a transport stoichiometry of 1 Ca(2+) out and 1 H(+) in per ATP hydrolyzed. The ATPase may serve an important function by removing Ca(2+) from the microorganism in environmental conditions when e.g. stressed by high Ca(2+) and alkaline pH.
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Affiliation(s)
- Kristina Faxén
- From the Departments of Molecular Biology, Gustav Wieds Vej 10C, and
| | | | - Pontus Gourdon
- From the Departments of Molecular Biology, Gustav Wieds Vej 10C, and
| | - Natalya Fedosova
- Physiology and Biophysics, Ole Worms Allé 6, Centre for Membrane Pumps in Cells and Disease, PUMPKIN, Danish National Research Foundation, Aarhus University, DK-8000, Aarhus, Denmark
| | - Jens Preben Morth
- From the Departments of Molecular Biology, Gustav Wieds Vej 10C, and
| | - Poul Nissen
- From the Departments of Molecular Biology, Gustav Wieds Vej 10C, and
| | - Jesper Vuust Møller
- Physiology and Biophysics, Ole Worms Allé 6, Centre for Membrane Pumps in Cells and Disease, PUMPKIN, Danish National Research Foundation, Aarhus University, DK-8000, Aarhus, Denmark
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Giotis ES, Muthaiyan A, Natesan S, Wilkinson BJ, Blair IS, McDowell DA. Transcriptome analysis of alkali shock and alkali adaptation in Listeria monocytogenes 10403S. Foodborne Pathog Dis 2010; 7:1147-57. [PMID: 20677981 PMCID: PMC3132107 DOI: 10.1089/fpd.2009.0501] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Alkali stress is an important means of inactivating undesirable pathogens in a wide range of situations. Unfortunately, Listeria monocytogenes can launch an alkaline tolerance response, significantly increasing persistence of the pathogen in such environments. This study compared transcriptome patterns of alkali and non-alkali-stressed L. monocytogenes 10403S cells, to elucidate the mechanisms by which Listeria adapts and/or grows during short- or long-term alkali stress. Transcription profiles associated with alkali shock (AS) were obtained by DNA microarray analysis of midexponential cells suspended in pH 9 media for 15, 30, or 60 min. Transcription profiles associated with alkali adaptation (AA) were obtained similarly from cells grown to midexponential phase at pH 9. Comparison of AS and AA transcription profiles with control cell profiles identified a high number of differentially regulated open-reading frames in all tested conditions. Rapid (15 min) changes in expression included upregulation of genes encoding for multiple metabolic pathways (including those associated with Na+/H+ antiporters), ATP-binding cassette transporters of functional compatible solutes, motility, and virulence-associated genes as well as the σ(B) controlled stress resistance network. Slower (30 min and more) responses to AS and adaptation during growth in alkaline conditions (AA) involved a different pattern of changes in mRNA concentrations, and genes involved in proton export.
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Affiliation(s)
- Efstathios S. Giotis
- Food Microbiology Research Group, School of Health Sciences, University of Ulster, Northern Ireland, United Kingdom
- Microbiology Group, Department of Biological Sciences, Illinois State University, Normal, Illinois
| | - Arunachalam Muthaiyan
- Microbiology Group, Department of Biological Sciences, Illinois State University, Normal, Illinois
| | - Senthil Natesan
- Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences, Colchester, Vermont
| | - Brian J. Wilkinson
- Microbiology Group, Department of Biological Sciences, Illinois State University, Normal, Illinois
| | - Ian S. Blair
- Food Microbiology Research Group, School of Health Sciences, University of Ulster, Northern Ireland, United Kingdom
| | - David A. McDowell
- Food Microbiology Research Group, School of Health Sciences, University of Ulster, Northern Ireland, United Kingdom
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Waltman P, Kacmarczyk T, Bate AR, Kearns DB, Reiss DJ, Eichenberger P, Bonneau R. Multi-species integrative biclustering. Genome Biol 2010; 11:R96. [PMID: 20920250 PMCID: PMC2965388 DOI: 10.1186/gb-2010-11-9-r96] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 09/19/2010] [Accepted: 09/29/2010] [Indexed: 12/22/2022] Open
Abstract
We describe an algorithm, multi-species cMonkey, for the simultaneous biclustering of heterogeneous multiple-species data collections and apply the algorithm to a group of bacteria containing Bacillus subtilis, Bacillus anthracis, and Listeria monocytogenes. The algorithm reveals evolutionary insights into the surprisingly high degree of conservation of regulatory modules across these three species and allows data and insights from well-studied organisms to complement the analysis of related but less well studied organisms.
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Affiliation(s)
- Peter Waltman
- Computer Science Department, Warren Weaver Hall (Room 305), 251 Mercer Street, New York, NY 10012, USA.
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37
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Cacace G, Mazzeo MF, Sorrentino A, Spada V, Malorni A, Siciliano RA. Proteomics for the elucidation of cold adaptation mechanisms in Listeria monocytogenes. J Proteomics 2010; 73:2021-30. [PMID: 20620249 DOI: 10.1016/j.jprot.2010.06.011] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Revised: 05/06/2010] [Accepted: 06/23/2010] [Indexed: 11/25/2022]
Abstract
Listeria monocytogenes, one of the major food-related pathogens, is the aetiological agent of listeriosis, a potentially life-threatening illness. It is able to survive in hostile environments and stress conditions such as those encountered in food-processing technologies (high salt concentration, wide range of pH and temperature, low water availability) and it also thrives at temperatures ranging from -0.4 to 45 °C. In this study, expression proteomics was applied to gain insight into key cellular events that allow L. monocytogenes to survive and multiply even at refrigeration temperatures. Interestingly, we observed that the adaptation processes mainly affect biochemical pathways related to protein synthesis and folding, nutrient uptake and oxidative stress. Furthermore, proteins implicated in metabolic pathways for energy production, such as glycolysis and Pta-AckA pathway, were present to a higher level in the cells grown at 4 °C. This suggests that, on the whole, cells exhibit an enhanced demand for energy to sustain cold growth. Proteomics may represent a key tool in deciphering specific mechanisms underlying cold adaptation response and, more widely, cell machinery.
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Affiliation(s)
- Giuseppina Cacace
- Proteomic and Biomolecular Mass Spectrometry Center, Institute of Food Science, CNR, Avellino, Italy
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Affiliation(s)
- M Begley
- Food for Health Ireland, University College Cork, Cork, Ireland
| | - Colin Hill
- Food for Health Ireland, University College Cork, Cork, Ireland
- Department of Microbiology, University College Cork, Cork, Ireland
- Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland; ,
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Kint G, Fierro C, Marchal K, Vanderleyden J, De Keersmaecker SCJ. Integration of ‘omics’ data: does it lead to new insights into host–microbe interactions? Future Microbiol 2010; 5:313-28. [DOI: 10.2217/fmb.10.1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The interaction between both beneficial and pathogenic microbes and their host has been the subject of many studies. Although the field of systems biology is rapidly evolving, the use of a systems biology approach by means of high-throughput techniques to study host–microbe interactions is just beginning to be explored. In this review, we discuss some of the most recently developed high-throughput ‘omics’ techniques and their use in the context of host–microbe interaction. Moreover, we highlight studies combining several techniques that are pioneering the integration of ‘omics’ data related to host–microbe interactions. Finally, we list the major challenges ahead for successful systems biology research on host–microbe interactions.
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Affiliation(s)
- Gwendoline Kint
- Centre of Microbial & Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
| | - Carolina Fierro
- Centre of Microbial & Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
| | - Kathleen Marchal
- Centre of Microbial & Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
| | - Jos Vanderleyden
- Centre of Microbial & Plant Genetics, KU Leuven, Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
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40
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Ágoston R, Soni K, Jesudhasan PR, Russell WK, Mohácsi-Farkas C, Pillai SD. Differential Expression of Proteins inListeria monocytogenesUnder Thermotolerance-Inducing, Heat Shock, and Prolonged Heat Shock Conditions. Foodborne Pathog Dis 2009; 6:1133-40. [DOI: 10.1089/fpd.2009.0286] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Réka Ágoston
- Corvinus University of Budapest, Budapest, Hungary
| | - Kamlesh Soni
- Departments of Poultry Science and Nutrition and Food Science, Texas A&M University, College Station, Texas
| | - Palmy R. Jesudhasan
- Departments of Poultry Science and Nutrition and Food Science, Texas A&M University, College Station, Texas
| | - William K. Russell
- Departments of Poultry Science and Nutrition and Food Science, Texas A&M University, College Station, Texas
| | | | - Suresh D. Pillai
- Departments of Poultry Science and Nutrition and Food Science, Texas A&M University, College Station, Texas
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Slonczewski JL, Fujisawa M, Dopson M, Krulwich TA. Cytoplasmic pH measurement and homeostasis in bacteria and archaea. Adv Microb Physiol 2009; 55:1-79, 317. [PMID: 19573695 DOI: 10.1016/s0065-2911(09)05501-5] [Citation(s) in RCA: 293] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Of all the molecular determinants for growth, the hydronium and hydroxide ions are found naturally in the widest concentration range, from acid mine drainage below pH 0 to soda lakes above pH 13. Most bacteria and archaea have mechanisms that maintain their internal, cytoplasmic pH within a narrower range than the pH outside the cell, termed "pH homeostasis." Some mechanisms of pH homeostasis are specific to particular species or groups of microorganisms while some common principles apply across the pH spectrum. The measurement of internal pH of microbes presents challenges, which are addressed by a range of techniques under varying growth conditions. This review compares and contrasts cytoplasmic pH homeostasis in acidophilic, neutralophilic, and alkaliphilic bacteria and archaea under conditions of growth, non-growth survival, and biofilms. We present diverse mechanisms of pH homeostasis including cell buffering, adaptations of membrane structure, active ion transport, and metabolic consumption of acids and bases.
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Experimental design and environmental parameters affect Rhodospirillum rubrum S1H response to space flight. ISME JOURNAL 2009; 3:1402-19. [DOI: 10.1038/ismej.2009.74] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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