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Systematic analysis of gut bacterial carcinogen metabolism and its functional consequences
Boyao Zhang ; George-Eugen Maftei ; Bartosz Bartmanski , et al. bioRxiv,2024:2024.05.20.595058. DOI: 10.1101/2024.05.20.595058
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Abstract: Organic carcinogens, in particular DNA-reactive compounds, contribute to the irreversible initiation step of tumorigenesis through introduction of genomic instability. Although carcinogen bioactivation and detoxification by human enzymes has been extensively studied, carcinogen biotransformation by human-associated bacteria, the microbiota, has not yet been systematically investigated. We tested the biotransformation of 68 mutagenic carcinogens by 34 bacterial species representative for the upper and lower human gastrointestinal tract and found that the majority (41) of the tested carcinogens undergo bacterial biotransformation. To assess the functional consequences of microbial carcinogen metabolism, we developed a pipeline to couple gut bacterial carcinogen biotransformation assays with Ames mutagenicity testing and liver biotransformation experiments. This revealed a bidirectional crosstalk between gut microbiota and host carcinogen metabolism, which we validated in gnotobiotic mouse models. Overall, the systematic assessment of gut microbiota carcinogen biotransformation and its interplay with host metabolism highlights the gut microbiome as an important modulator of exposome-induced tumorigenesis.
Purchased from AmBeed: 446-86-6 ; 121-66-4 ; 607-35-2 ; 67-20-9 ; 59-87-0 ; 117-39-5 ; 57-97-6 ; 5131-60-2 ; 512-56-1 ; 62-44-2 ; 6959-48-4 ; 84-65-1 ; 137-17-7 ; 117-39-5 ; 153-78-6 ; 1614-12-6 ; 298-81-7 ; 320-67-2 ; 99-55-8 ; 94-52-0 ; 101-61-1 ; 103-33-3 ; 114-83-0 ; 64091-91-4 ; 53-96-3 ; 3817-11-6 ; 90-94-8 ; 613-13-8 ; 56-57-5 ; 91-64-5 ; 26148-68-5 ; 101-80-4 ; 139-65-1 ; 366-70-1 ; 389-08-2 ; 99-59-2 ; 132-32-1 ; 105650-23-5 ; 394-69-4 ; 3544-23-8 ; 389-08-2 ; 320-67-2 ; 404-86-4 ; 82-28-0 ; 2832-40-8 ; 2475-45-8 ; 129-15-7 ...More
CAS No. : | 114-83-0 | MDL No. : | MFCD00008672 |
Formula : | C8H10N2O | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | UICBCXONCUFSOI-UHFFFAOYSA-N |
M.W : | 150.18 | Pubchem ID : | 8247 |
Synonyms : |
|
Chemical Name : | 1-Acetyl-2-phenylhydrazine |
Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P264-P270-P301+P310+P330-P405-P501 | UN#: | 2811 |
Hazard Statements: | H301 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With dichloro bis(acetonitrile) palladium(II); 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; In 1,4-dioxane; at 100℃; for 12h; | General procedure: Acetyl phenylhydrazine (0.45mmol, 68mg),Benzofuran (0.3 mmol, 35 mg) was added to a 10 mL single-mouth bottle.Add oxidant TEMPO (3.0 equivalents, 141 mg),Bis(acetonitrile)palladium(II) chloride (15 mol%, 12 mg),2mL 1,4-dioxane,The reaction is warmed to 60-150 C (especially 100 C) for 8-24 h (especially 24 h).The reaction is completed,The reaction solution was extracted with ethyl acetate 15 mL×3.The ethyl acetate layers are combined,Distilled water 10mL × 1 wash,The saturated sodium chloride solution was washed 10 mL x 1 .Concentrated under reduced pressure,Silica gel column chromatography gave the pure target product. The benzofuran derivative 3a was confirmed by NMR, GC-MS. The product yield was 85%. 1a in place of the Example 1 with 1p, other operations of Example 1. |
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