Growth of Lactobacillus reuteri DSM17938 Under Two Simulated Microgravity Systems: Changes in Reuterin Production, Gastrointestinal Passage Resistance, and Stress Genes Expression Response

Research output: Contribution to journalArticle

Standard

Growth of Lactobacillus reuteri DSM17938 Under Two Simulated Microgravity Systems: Changes in Reuterin Production, Gastrointestinal Passage Resistance, and Stress Genes Expression Response. / Senatore, Giuliana; Mastroleo, Felice; Leys, Natalie; Mauriello, Gianluigi.

In: Astrobiology, Vol. 20, No. 1, 01.01.2020, p. 1-14.

Research output: Contribution to journalArticle

Bibtex - Download

@article{3fb7c096c3d34813958d4d23347f752e,
title = "Growth of Lactobacillus reuteri DSM17938 Under Two Simulated Microgravity Systems: Changes in Reuterin Production, Gastrointestinal Passage Resistance, and Stress Genes Expression Response",
abstract = "Extreme factors such as space microgravity, radiation, and magnetic field differ from those that occur on Earth. Microgravity may induce and select some microorganisms for physiological, metabolic, and/or genetic variations. This study was conducted to determine the effects of simulated microgravity conditions on the metabolism and gene expression of the probiotic bacterium Lactobacillus reuteri DSM17938. To investigate microbial response to simulated microgravity, two devices—the rotating wall vessel (RWV) and the random positioning machine (RPM)—were used. Microbial growth, reuterin production, and resistance to gastrointestinal passage were assessed, and morphological characteristics were analyzed by scanning electron microscopy. The expression of some selected genes that are responsive to stress conditions and to bile salts stress was evaluated through real-time quantitative polymerase chain reaction assay. Monitoring of bacterial growth, cell size, and shape under simulated microgravity did not reveal differences compared with 1 x g controls. On the contrary, an enhanced production of reuterin and a greater tolerance to the gastrointestinal passage were observed. Moreover, some stress genes were upregulated under RWV conditions, especially after 24 h of treatment, whereas RPM conditions seemed to determine a downregulation over time of the same stress genes. These results show that simulated microgravity could alter some physiological characteristics of L. reuteri DSM17938 with regard to tolerance toward stress conditions encountered on space missions and could be useful to elucidate the adaptation mechanisms of microbes to the space environment.",
keywords = "Antimicrobial compound, Gastrointestinal passage, Microgravity, Probiotic bacteria, RPM, RWV",
author = "Giuliana Senatore and Felice Mastroleo and Natalie Leys and Gianluigi Mauriello",
note = "Score=10",
year = "2020",
month = "1",
day = "1",
doi = "10.1089/ast.2019.2082",
language = "English",
volume = "20",
pages = "1--14",
journal = "Astrobiology",
issn = "1531-1074",
publisher = "Mary Ann Liebert Inc. Publishers",
number = "1",

}

RIS - Download

TY - JOUR

T1 - Growth of Lactobacillus reuteri DSM17938 Under Two Simulated Microgravity Systems: Changes in Reuterin Production, Gastrointestinal Passage Resistance, and Stress Genes Expression Response

AU - Senatore, Giuliana

AU - Mastroleo, Felice

AU - Leys, Natalie

AU - Mauriello, Gianluigi

N1 - Score=10

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Extreme factors such as space microgravity, radiation, and magnetic field differ from those that occur on Earth. Microgravity may induce and select some microorganisms for physiological, metabolic, and/or genetic variations. This study was conducted to determine the effects of simulated microgravity conditions on the metabolism and gene expression of the probiotic bacterium Lactobacillus reuteri DSM17938. To investigate microbial response to simulated microgravity, two devices—the rotating wall vessel (RWV) and the random positioning machine (RPM)—were used. Microbial growth, reuterin production, and resistance to gastrointestinal passage were assessed, and morphological characteristics were analyzed by scanning electron microscopy. The expression of some selected genes that are responsive to stress conditions and to bile salts stress was evaluated through real-time quantitative polymerase chain reaction assay. Monitoring of bacterial growth, cell size, and shape under simulated microgravity did not reveal differences compared with 1 x g controls. On the contrary, an enhanced production of reuterin and a greater tolerance to the gastrointestinal passage were observed. Moreover, some stress genes were upregulated under RWV conditions, especially after 24 h of treatment, whereas RPM conditions seemed to determine a downregulation over time of the same stress genes. These results show that simulated microgravity could alter some physiological characteristics of L. reuteri DSM17938 with regard to tolerance toward stress conditions encountered on space missions and could be useful to elucidate the adaptation mechanisms of microbes to the space environment.

AB - Extreme factors such as space microgravity, radiation, and magnetic field differ from those that occur on Earth. Microgravity may induce and select some microorganisms for physiological, metabolic, and/or genetic variations. This study was conducted to determine the effects of simulated microgravity conditions on the metabolism and gene expression of the probiotic bacterium Lactobacillus reuteri DSM17938. To investigate microbial response to simulated microgravity, two devices—the rotating wall vessel (RWV) and the random positioning machine (RPM)—were used. Microbial growth, reuterin production, and resistance to gastrointestinal passage were assessed, and morphological characteristics were analyzed by scanning electron microscopy. The expression of some selected genes that are responsive to stress conditions and to bile salts stress was evaluated through real-time quantitative polymerase chain reaction assay. Monitoring of bacterial growth, cell size, and shape under simulated microgravity did not reveal differences compared with 1 x g controls. On the contrary, an enhanced production of reuterin and a greater tolerance to the gastrointestinal passage were observed. Moreover, some stress genes were upregulated under RWV conditions, especially after 24 h of treatment, whereas RPM conditions seemed to determine a downregulation over time of the same stress genes. These results show that simulated microgravity could alter some physiological characteristics of L. reuteri DSM17938 with regard to tolerance toward stress conditions encountered on space missions and could be useful to elucidate the adaptation mechanisms of microbes to the space environment.

KW - Antimicrobial compound

KW - Gastrointestinal passage

KW - Microgravity

KW - Probiotic bacteria

KW - RPM

KW - RWV

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/38095993

U2 - 10.1089/ast.2019.2082

DO - 10.1089/ast.2019.2082

M3 - Article

VL - 20

SP - 1

EP - 14

JO - Astrobiology

JF - Astrobiology

SN - 1531-1074

IS - 1

ER -

ID: 6773130