Global Meta-analysis of Urine Microbiome: Colonization of Polycyclic Aromatic Hydrocarbon-degrading Bacteria Among Bladder Cancer Patients

被引:24
作者
Bukavina, Laura [1 ,2 ,3 ,6 ]
Isali, Ilaha [2 ,3 ]
Ginwala, Rashida [2 ]
Sindhani, Mohit [4 ]
Calaway, Adam [2 ,3 ]
Magee, Diana [1 ]
Miron, Benjamin [1 ]
Correa, Andres [1 ]
Kutikov, Alexander [1 ]
Zibelman, Matthew [1 ]
Ghannoum, Mahmoud [2 ,3 ]
Retuerto, Mauricio [3 ]
Ponsky, Lee [2 ,3 ]
Markt, Sarah [3 ]
Uzzo, Robert [1 ]
Abbosh, Philip [1 ,5 ]
机构
[1] Fox Chase Canc Ctr, Philadelphia, PA USA
[2] Univ Hosp Cleveland Med Ctr, Cleveland, OH USA
[3] Case Western Reserve Sch Med, Cleveland, OH USA
[4] India Inst Technol, Delhi, India
[5] Albert Einstein Med Ctr, Philadelphia, PA USA
[6] Fox Chase Canc Ctr, Dept Urol Oncol, 333 Cottman Ave, Philadelphia, PA 19111 USA
基金
美国国家卫生研究院;
关键词
Bladder cancer; Microbiome; Urinary microbiome; 16S rRNA sequencing; Urothelial carcinoma;
D O I
10.1016/j.euo.2023.02.004
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background: The application of next-generation sequencing techniques has enabled characterization of urinary tract microbiome. Although many studies have demonstrated associations between the human microbiome and bladder cancer (BC), these have not always reported consistent results, thereby necessitating cross-study comparisons. Thus, the fundamental questions remain how we can utilize this knowledge.Objective: The aim of our study was to examine the disease-associated changes in urine microbiome communities globally utilizing a machine learning algorithm.Design, setting, and participants: Raw FASTQ files were downloaded for the three pub-lished studies in urinary microbiome in BC patients, in addition to our own prospectively collected cohort.Outcome measurements and statistical analysis: Demultiplexing and classification were performed using the QIIME 2020.8 platform. De novo operational taxonomic units were clustered using the uCLUST algorithm and defined by 97% sequence similarity and clas-sified at the phylum level against the Silva RNA sequence database. The metadata available from the three studies included were used to evaluate the differential abun-dance between BC patients and controls via a random-effect meta-analysis using the metagen R function. A machine learning analysis was performed using the SIAMCAT R package.Results and limitations: Our study includes 129 BC urine and 60 healthy control sam-ples across four different countries. We identified a total of 97/548 genera to be differ-entially abundant in the BC urine microbiome compared with that of healthy patients. Overall, while the differences in diversity metrics were clustered around the country of origin (Kruskal-Wallis, p < 0.001), collection methodology was a driver of microbiome composition. When assessing dataset from China, Hungary, and Croatia, data demon-strated no discrimination capacity to distinguish between BC patients and healthy adults (area under the curve [AUC] 0.577). However, inclusion of samples with catheterized urine improved the diagnostic accuracy of prediction for BC to AUC 0.995, with precision-recall AUC = 0.994. Through elimination of contaminants associated with the collection methodology among all cohorts, our study identified increased abundance of polycyclic aromatic hydrocarbon (PAH)-degrading bacteria Sphingomonas, Acinetobacter, Micrococcus, Pseudomonas, and Ralstonia to be consistently present in BC patients.Conclusions: The microbiota of the BC population may be a reflection of PAH exposure from smoking, environmental pollutants, and ingestion. Presence of PAHs in the urine of BC patients may allow for a unique metabolic niche and provide necessary metabolic resources where other bacteria are not able to flourish. Furthermore, we found that while compositional differences are associated with geography more than with disease, many are driven by the collection methodology.Patient summary: The goal of our study was to compare the urine microbiome of blad-der cancer patients with that of healthy controls and evaluate any potential bacteria that may be more likely to be found in patients with bladder cancer. Our study is unique as it evaluates this across multiple countries, to find a common pattern. After we removed some of the contamination, we were able to localize several key bacteria that are more likely to be found in the urine of bladder cancer patients. These bacteria all share their ability to break down tobacco carcinogens.(c) 2023 European Association of Urology. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:190 / 203
页数:14
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