背景:一些观察性研究和临床试验表明,肠道菌群与泌尿系癌症有关。然而,由于许多混杂因素,肠道菌群与泌尿系癌症之间的因果关系仍有待阐明.
方法:在本研究中,我们使用了两个阈值来识别来自MiBioGen联盟的肠道微生物群GWAS,并从英国生物银行和Finngen联盟获得了五种泌尿系统癌症的数据,分别。然后,我们以Wald比率或逆方差加权为主要方法,进行了双样本孟德尔随机化(MR)分析。我们还进行了全面的敏感性分析,以验证结果的稳健性。此外,我们进行了反向MR分析以检验因果关系的方向.
结果:我们的研究发现Rikenellaceae科,Allisonella属,LachnospiraceaeUCG001属,镰状杆菌属,肠杆菌属,反刍杆菌属,RuminococcaceaeUCG013和Senegalimassilia属与膀胱癌有关;Ruminococcus属扭转组,镰状杆菌属,Barnesiella属,Butyricicocus属,和Ruminococcaceae属UCG005与前列腺癌有关;α变形杆菌类,类杆菌,家庭家庭XI,Coprococcus2属,肠单胞菌属,幼虫杆菌属,乳球菌属,扭群Ruminococcus,和真杆菌属与肾细胞癌有关;梭状芽胞杆菌科1,Christensenellaceae科,肠杆菌属,敏感梭菌属1,真杆菌属与肾盂癌有关;肽链球菌科,Romboutsia属,下肉芽肿属与睾丸癌有关。综合敏感性分析证明我们的结果是可靠的。
结论:我们的研究证实了特定肠道微生物类群对泌尿系癌症的作用,从宏观层面探讨肠道菌群对泌尿系癌症的作用机制,为泌尿系癌症的筛查和治疗提供了潜在的目标,致力于为临床研究提供新思路。
BACKGROUND: Several observational studies and clinical trials have shown that the gut microbiota is associated with urological cancers. However, the causal relationship between gut microbiota and urological cancers remains to be elucidated due to many confounding factors.
METHODS: In this
study, we used two thresholds to identify gut microbiota GWAS from the MiBioGen consortium and obtained data for five urological cancers from the UK biobank and Finngen consortium, respectively. We then performed a two-sample Mendelian randomization (MR) analysis with Wald ratio or inverse variance weighted as the main method. We also performed comprehensive sensitivity analyses to verify the robustness of the results. In addition, we performed a reverse MR analysis to examine the direction of causality.
RESULTS: Our
study found that family Rikenellaceae, genus Allisonella, genus Lachnospiraceae UCG001, genus Oscillibacter, genus Eubacterium coprostanoligenes group, genus Eubacterium ruminantium group, genus Ruminococcaceae UCG013, and genus Senegalimassilia were related to bladder cancer; genus Ruminococcus torques group, genus Oscillibacter, genus Barnesiella, genus Butyricicoccus, and genus Ruminococcaceae UCG005 were related to prostate cancer; class Alphaproteobacteria, class Bacilli, family Family XI, genus Coprococcus2, genus Intestinimonas, genus Lachnoclostridium, genus Lactococcus, genus Ruminococcus torques group, and genus Eubacterium brachy group were related to renal cell cancer; family Clostridiaceae 1, family Christensenellaceae, genus Eubacterium coprostanoligenes group, genus Clostridium sensu stricto 1, and genus Eubacterium eligens group were related to renal pelvis cancer; family Peptostreptococcaceae, genus Romboutsia, and genus Subdoligranulum were related to testicular cancer. Comprehensive sensitivity analyses proved that our results were reliable.
CONCLUSIONS: Our
study confirms the role of specific gut microbial taxa on urological cancers, explores the mechanism of gut microbiota on urological cancers from a macroscopic level, provides potential targets for the screening and treatment of urological cancers, and is dedicated to providing new ideas for clinical research.