PMID- 32957565 OWN - NLM STAT- MEDLINE DCOM- 20210518 LR - 20210518 IS - 1660-3397 (Electronic) IS - 1660-3397 (Linking) VI - 18 IP - 9 DP - 2020 Sep 17 TI - 16S rRNA Sequencing and Metagenomics Study of Gut Microbiota: Implications of BDB on Type 2 Diabetes Mellitus. LID - 10.3390/md18090469 [doi] LID - 469 AB - Gut microbiota has a critical role in metabolic diseases, including type 2 diabetes mellitus (T2DM). 3-bromo-4,5-bis(2,3-dibromo-4,5-dihydroxybenzyl)-1,2-benzenediol (BDB) is a natural bromophenol isolated from marine red alga Rhodomela confervoides. Our latest research showed that BDB could alleviate T2DM in diabetic BKS db mice. To find out whether BDB modulates the composition of the gut microbiota during T2DM treatment, 24 BKS db diabetic mice were randomly grouped to receive BDB (n = 6), metformin (n = 6), or the vehicle (n = 6) for 7 weeks in a blinded manner. Non-diabetic BKS mice (n = 6) were used as normal control. Diabetic mice treated with BDB or metformin demonstrated significant reductions in fasting blood glucose (FBG) levels compared with the vehicle-treated mice in the 7th week. Pyrosequencing of the V3-V4 regions of the 16S rRNA gene revealed the changes of gut microbiota in response to BDB treatment. The result demonstrated short-chain acid (SCFA) producing bacteria Lachnospiraceae and Bacteroides were found to be significantly more abundant in the BDB and metformin treated group than the vehicle-treatment diabetic group. Remarkably, at the genus levels, Akkermansia elevated significantly in the BDB-treatment group. Metagenomic results indicated that BDB may alleviate the metabolic disorder of diabetic mice by promoting propanoate metabolism and inhibiting starch and sucrose metabolism, amino sugar and nucleotide sugar metabolism. In conclusion, our study suggests that the anti-diabetic effect of BDB is closely related to the modulating structure of gut microbiota and the improvement of functional metabolism genes of intestinal microorganisms. FAU - Zhang, Liang AU - Zhang L AD - Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China. AD - Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266000, China. AD - School of Earth and Planetary, University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Luo, Jiao AU - Luo J AD - School of Public Health, Qingdao University, Qingdao 266071, China. FAU - Li, Xiangqian AU - Li X AD - State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China. FAU - Guo, Shuju AU - Guo S AD - Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China. AD - Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266000, China. AD - School of Earth and Planetary, University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Shi, Dayong AU - Shi D AD - State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China. LA - eng GR - JQ201722/Shandong Provincial Natural Science Foundation for Distinguished Young Scholars/ GR - 817033540, 81803344/National Natural Science Foundation of China/ GR - 2017-CXZX01-1-1, 2017-CXZX01-3-9/Taishan scholar Youth Project of Shandong province, Qingdao Marine Biomedical Science and Technology Innovation Center Project/ GR - U1706213/NSFC-Shan-dong Joint Fund/ GR - 2019RKE27018/National Program for Support of Top-notch Young Professionals, Key research and development plan (soft science) project of Shandong province/ PT - Journal Article DEP - 20200917 PL - Switzerland TA - Mar Drugs JT - Marine drugs JID - 101213729 RN - 0 (3-bromo-4,5-bis(2,3-dibromo-4,5-dihydroxybenzyl)-1,2-benzenediol) RN - 0 (Benzhydryl Compounds) RN - 0 (Biomarkers) RN - 0 (Blood Glucose) RN - 0 (Catechols) RN - 0 (Hypoglycemic Agents) SB - IM MH - Animals MH - Bacteria/*drug effects/genetics/growth & development/metabolism MH - Benzhydryl Compounds/isolation & purification/*pharmacology MH - Biomarkers/blood MH - Blood Glucose/*drug effects/metabolism MH - Catechols/isolation & purification/*pharmacology MH - Diabetes Mellitus, Type 2/blood/*drug therapy/microbiology MH - Disease Models, Animal MH - Gastrointestinal Microbiome/*drug effects/genetics MH - High-Throughput Nucleotide Sequencing MH - Hypoglycemic Agents/isolation & purification/*pharmacology MH - Male MH - *Metagenomics MH - Mice, Inbred C57BL MH - Rhodophyta/chemistry MH - *Ribotyping PMC - PMC7551199 OTO - NOTNLM OT - 16S rRNA sequencing OT - BDB OT - gut microbiota OT - marine red alga OT - metagenomics OT - type 2 diabetes mellitus COIS- The authors declare no conflict of interest. EDAT- 2020/09/23 06:00 MHDA- 2021/05/19 06:00 PMCR- 2020/09/01 CRDT- 2020/09/22 01:02 PHST- 2020/08/25 00:00 [received] PHST- 2020/09/05 00:00 [revised] PHST- 2020/09/09 00:00 [accepted] PHST- 2020/09/22 01:02 [entrez] PHST- 2020/09/23 06:00 [pubmed] PHST- 2021/05/19 06:00 [medline] PHST- 2020/09/01 00:00 [pmc-release] AID - md18090469 [pii] AID - marinedrugs-18-00469 [pii] AID - 10.3390/md18090469 [doi] PST - epublish SO - Mar Drugs. 2020 Sep 17;18(9):469. doi: 10.3390/md18090469.