Escherichia coli, a common constituent of benign prostate hyperplasia-associated microbiota induces inflammation and DNA damage in prostate epithelial cells.

Tytuł:: Escherichia coli, a common constituent of benign prostate hyperplasia-associated microbiota induces inflammation and DNA damage in prostate epithelial cells.
Autorzy:: Jain S; Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India.; Manipal Academy of Higher Education, Manipal, Karnataka, India.
Samal AG; Department of Surgery, Hitech Medical College, Rourkela, Odisha, India.
Das B; Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India.; Manipal Academy of Higher Education, Manipal, Karnataka, India.
Pradhan B; School of Basic Sciences, S. K. Dash Center of Excellence of Biosciences and Engineering & Technology (SKBET), Indian Institute of Technology, Bhubaneswar, Odisha, India.
Sahu N; School of Biological Sciences, National Institute of Science Education and Research, Bhubaneswar, Odisha, India.
Mohapatra D; Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India.; School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India.
Behera PK; Department of Pathology, Ispat General Hospital, Rourkela, Odisha, India.
Satpathi PS; Department of Microbiology, Midnapore Medical College, Midnapore, West Bengal, India.
Mohanty AK; Infectious Disease Biology Unit, Institute of Life Sciences, Bhubaneswar, Odisha, India.
Satpathi S; Department of Pathology, Ispat General Hospital, Rourkela, Odisha, India.; Department of Pathology, Hitech Medical College and Hospital, Rourkela, Odisha, India.
Senapati S; Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India.
Źródło:: The Prostate [Prostate] 2020 Nov; Vol. 80 (15), pp. 1341-1352. Date of Electronic Publication: 2020 Aug 24.
Typ publikacji:: Journal Article; Research Support, Non-U.S. Gov't
Język:: English
Imprint Name(s):: Publication: <2005-> : Hoboken, NJ : Wiley-Liss
Original Publication: New York : Alan R. Liss, c1980-
MeSH Terms:: DNA Damage*
Epithelial Cells/*microbiology
Escherichia coli/*isolation & purification
Inflammation/*microbiology
Prostate/*microbiology
Prostatic Hyperplasia/*microbiology
Epithelial Cells/pathology ; Humans ; Inflammation/pathology ; Male ; Middle Aged ; Prostate/pathology ; Prostate/surgery ; Prostatic Hyperplasia/pathology ; Prostatic Hyperplasia/surgery ; Transurethral Resection of Prostate
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Contributed Indexing:: Keywords: BPH; DNA damage; NF-κB; inflammation; microbiota
Entry Date(s):: Date Created: 20200825 Date Completed: 20210113 Latest Revision: 20211215
Update Code:: 20240105
DOI:: 10.1002/pros.24063
PMID:: 32835423
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Background: The role of microbiota in the pathophysiology of benign prostate hyperplasia (BPH), especially in creating an inflammatory milieu may not be avoided. The major objectives of this study were to investigate the microbial composition of BPH tissues, its association with inflammation and check the effect of clinically isolated bacteria on prostate epithelial cells.
Methods: The study includes 36 patients with a pathological diagnosis of BPH. Following strict aseptic measures, tissues were collected after transurethral resection of prostate, multiple pieces of the resected tissues were subjected to histopathological analysis, bacterial culture and genomic DNA extraction. Microbial composition was analyzed by culture and/or next-generation sequencing methods. Annotation of operational taxonomy unit has been done with an in-house algorithm. The extent of inflammation was scored through histological evaluation of tissue sections. The effect of clinical isolates on nuclear factor-κB (NF-κB) activity and induction of DNA-damage in the prostate epithelial cells were evaluated.
Results: Histopathological analysis of the BPH tissues showed the presence of inflammation in almost all the tissues with a varied level at different regions of the same tissue section and the level of overall inflammation was different from patients to patients. Microbial culture of tissue samples showed the presence of live bacteria in 55.5% (20 out of 36) of the patient tissues. Majority of the isolates were coagulase-positive Staphylococcus, E. coli and Micrococcus spp. Further, V3 16S rRNA sequencing of the DNA isolated from BPH tissues showed the presence of multiple bacteria and the most common phylum in the BPH tissues were found to be Proteobacteria, Actinobacteria, Firmicutes, and Bacteroidetes. The E. coli, isolated from one of the tissue was able to activate NF-κB and induce DNA damage in prostate epithelial cells. Phospho-histone γH2A.X staining confirmed the presence of cells with damaged DNA lesion in BPH tissues and also correlated with the severity of inflammation.
Conclusion: Our study has shown that the BPH tissues do have a divergent microbial composition including the commonly found E. coli (phylum Proteobacteria), and these bacteria might contribute to the BPH-associated inflammation and/or tissue damage. The BPH-associated E. coli induced NF-κB signaling and DNA damage in prostate epithelial cells in vitro.
(© 2020 Wiley Periodicals LLC.)

Comment in: J Urol. 2021 Aug;206(2):447-450. (PMID: 33985341)

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