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Sidhartha R Sinha et al.
Cell host & microbe, 27(4), 659-670 (2020-02-27)
Secondary bile acids (SBAs) are derived from primary bile acids (PBAs) in a process reliant on biosynthetic capabilities possessed by few microbes. To evaluate the role of BAs in intestinal inflammation, we performed metabolomic, microbiome, metagenomic, and transcriptomic profiling of
Adam Beach et al.
Cell cycle (Georgetown, Tex.), 14(11), 1643-1656 (2015-04-04)
We have previously revealed that exogenously added lithocholic bile acid (LCA) extends the chronological lifespan of the yeast Saccharomyces cerevisiae, accumulates in mitochondria and alters mitochondrial membrane lipidome. Here, we use quantitative mass spectrometry to show that LCA alters the
Shinji Sato et al.
Hepato-gastroenterology, 59(118), 1804-1808 (2012-03-01)
Evaluation of bile acids (BA) is useful for assessing the changes of intestinal flora in patients with ulcerative colitis (UC). During enterohepatic circulation, the intestinal micro flora cause 7 alpha-dehydroxylation of cholic acid (CA) and chenodeoxycholic acid (CDCA), yielding deoxycholic
Gregory C Stachelek et al.
Cancer research, 70(1), 409-417 (2009-12-24)
Base excision repair (BER) plays a critical role in the repair of bases damaged by oxidative metabolism or alkylating agents, such as those commonly used in cancer therapy. Incomplete BER generates intermediates that require activation of homology-dependent DNA repair to
Masayuki Chuma et al.
Biological & pharmaceutical bulletin, 35(4), 582-587 (2012-04-03)
The active form of vitamin D, 1α,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)], binds to the vitamin D receptor (VDR) and regulates various physiological and pharmacological processes. Secondary bile acids, such as lithocholic acid (LCA), also act as endogenous VDR ligands. The molecular basis
Biao Nie et al.
Hepatology (Baltimore, Md.), 56(4), 1300-1310 (2012-04-26)
Bile acids are known to play important roles as detergents in the absorption of hydrophobic nutrients and as signaling molecules in the regulation of metabolism. We tested the novel hypothesis that naturally occurring bile acids interfere with protein-mediated hepatic long
Michael D Jones et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 966, 200-207 (2014-05-13)
Ultra high resolution SFC-MS (on sub-2μm particles) coupled to mass spectrometry has been evaluated for the metabolic profiling of rat and dog bile. The selectivity of the SFC separation differed from that seen in previous reversed-phase UPLC-MS studies on bile
Lingyan Ma et al.
Gut microbes, 12(1), 1-19 (2020-11-06)
Obesity is associated with impaired intestinal barrier function and dysbiosis of the gut microbiota. Spermidine, a polyamine that acts as an autophagy inducer, has important benefits in patients with aging-associated diseases and metabolic dysfunction. However, the mechanism of spermidine on
Nomundelger Gankhuyag et al.
Macromolecular bioscience, 15(6), 777-787 (2015-02-07)
Delivering drugs selectively to cancer cells but not to nearby normal cells is a major obstacle in drug therapy. In this study, lithocholic acid (LCA), a potent anti-cancer drug, is converted to two forms of poly(ethyleneglycol) (PEG) conjugates, viz., PEG-LCA
Ta-Chiang Liu et al.
Cell host & microbe, 29(6), 988-1001 (2021-05-20)
Intestinal Paneth cells modulate innate immunity and infection. In Crohn's disease, genetic mutations together with environmental triggers can disable Paneth cell function. Here, we find that a western diet (WD) similarly leads to Paneth cell dysfunction through mechanisms dependent on
Han Wang et al.
iScience, 24(6), 102693-102693 (2021-07-06)
Polarity-reversal catalysts enable otherwise sluggish or completely ineffective reactions which are characterized by unfavorable polar effects between radicals and substrates. We herein disclose that when irradiated by visible light, bromine can behave as a polarity-reversal catalyst. Hydroacylation of vinyl arenes
Benjamin L Woolbright et al.
Toxicology letters, 228(1), 56-66 (2014-04-20)
Lithocholic acid (LCA) supplementation in the diet results in intrahepatic cholestasis and bile infarcts. Previously we showed that an innate immune response is critical for cholestatic liver injury in the bile duct ligated mice. Thus, the purpose of this study
Sean T Koester et al.
STAR protocols, 2(4), 100938-100938 (2021-11-23)
Gastrointestinal motility is regulated by a variety of environmental factors including gut microbes and metabolites. The ability to interrogate mouse models of gut motility has enabled elucidation of these relationships. Here we describe integration of the red carmine dye and
Katarzyna Magiera et al.
Cell chemical biology, 24(4), 458-470 (2017-03-28)
USP2a is a deubiquitinase responsible for stabilization of cyclin D1, a crucial regulator of cell-cycle progression and a proto-oncoprotein overexpressed in numerous cancer types. Here we report that lithocholic acid (LCA) derivatives are inhibitors of USP proteins, including USP2a. The
J Jehle et al.
British journal of pharmacology, 167(7), 1563-1572 (2012-08-01)
Heart failure and atrial fibrillation are associated with apoptosis of cardiomyocytes, suggesting common abnormalities in pro-apoptotic cardiac molecules. Activation of the receptor tyrosine kinase EphA2 causes apoptosis in vitro, and dysregulation of EphA2-dependent signalling is implicated in LEOPARD and Noonan
Kyong Kim et al.
Archives of pharmacal research, 37(9), 1193-1200 (2014-03-05)
Compound K (CK) is a major metabolite of ginsenosides that is absorbed. CK has antidiabetic effects, although the mechanisms underlying the effects of CK have not fully been known. To elucidate the mechanisms underlying the antidiabetic effects of CK, we
Can Peng et al.
Journal of chromatographic science, 52(2), 128-136 (2013-01-15)
Artificial Calculus Bovis is a major substitute in clinical treatment for Niuhuang, a widely used, efficacious but rare traditional Chinese medicine. However, its chemical structures and the physicochemical properties of its components are complicated, which causes difficulty in establishing a
Donggi Paik et al.
Nature, 603(7903), 907-912 (2022-03-18)
The microbiota modulates gut immune homeostasis. Bacteria influence the development and function of host immune cells, including T helper cells expressing interleukin-17A (TH17 cells). We previously reported that the bile acid metabolite 3-oxolithocholic acid (3-oxoLCA) inhibits TH17 cell differentiation1. Although it
Stephen J Blake et al.
Cell reports. Medicine, 2(12), 100464-100464 (2022-01-15)
Immune agonist antibodies (IAAs) are promising immunotherapies that target co-stimulatory receptors to induce potent anti-tumor immune responses, particularly when combined with checkpoint inhibitors. Unfortunately, their clinical translation is hampered by serious dose-limiting, immune-mediated toxicities, including high-grade and sometimes fatal liver
Wycliffe O Masanta et al.
Proteomics. Clinical applications, 13(3), e1800083-e1800083 (2018-09-25)
Bile acids are crucial components of the intestinal antimicrobial defense and represent a significant stress factor for enteric pathogens. Adaptation processes of Campylobacter jejuni to this hostile environment are analyzed in this study by a proteomic approach. Proteome profiling by
Herbreteau Aglae et al.
Metabolites, 12(4) (2022-04-22)
Brain-gut axis refers to the bidirectional functional connection between the brain and the gut, which sustains vital functions for vertebrates. This connection also underlies the gastrointestinal (GI) comorbidities associated with brain disorders. Using a mouse model of glioma, based on
Mao Taketani et al.
Nature biotechnology, 38(8), 962-969 (2020-04-02)
Bacteroides thetaiotaomicron is a human-associated bacterium that holds promise for delivery of therapies in the gut microbiome1. Therapeutic bacteria would benefit from the ability to turn on different programs of gene expression in response to conditions inside and outside of
Yuan Chen et al.
Molecular endocrinology (Baltimore, Md.), 29(4), 613-626 (2015-02-13)
Among diseases unique to pregnancy, intrahepatic cholestasis of pregnancy is the most prevalent disorder with elevated serum bile acid levels. We have previously shown that estrogen 17β-estradiol (E2) transrepresses bile salt export pump (BSEP) through an interaction between estrogen receptor
José João Carvalho et al.
In vivo (Athens, Greece), 26(1), 63-69 (2012-01-03)
A non-invasive method to monitor the humoral immune response in mice after immunization is described. From fecal pellets of an individual mouse, a sufficient amount of active immunoglobulins or their fragments can be extracted to perform a regular examination of
Yu-Guang Wang et al.
Chemico-biological interactions, 200(1), 11-20 (2012-09-18)
Licorice (LE) has been commonly used in traditional Chinese medicine (TCM) for over 4000 years to reconcile various drugs and for hepatic disorders. Glycyrrhizin is the main bioactive component isolated from LE herbs. In the present study we examined the
Crosstalk between the hepatologist and the cardiologist: a future place for the lithocholic acid as a coronary atheroma risk factor?
Henri Duboc et al.
Hepatology (Baltimore, Md.), 56(6), 2426-2426 (2012-05-19)
Limin Zhang et al.
Environmental health perspectives, 123(7), 679-688 (2015-03-15)
Alteration of the gut microbiota through diet and environmental contaminants may disturb physiological homeostasis, leading to various diseases including obesity and type 2 diabetes. Because most exposure to environmentally persistent organic pollutants (POPs) occurs through the diet, the host gastrointestinal
Vishal Singh et al.
Cell, 175(3), 679-694 (2018-10-20)
Dietary soluble fibers are fermented by gut bacteria into short-chain fatty acids (SCFA), which are considered broadly health-promoting. Accordingly, consumption of such fibers ameliorates metabolic syndrome. However, incorporating soluble fiber inulin, but not insoluble fiber, into a compositionally defined diet
Maria C Estiú et al.
British journal of clinical pharmacology, 79(2), 316-329 (2014-08-08)
Intrahepatic cholestasis of pregnancy (ICP) is characterized by pruritus and elevated bile acid concentrations in maternal serum. This is accompanied by an enhanced risk of intra-uterine and perinatal complications. High concentrations of sulphated progesterone metabolites (PMS) have been suggested to
Namrata Singh et al.
Journal of cellular physiology, 232(3), 596-609 (2016-10-21)
Microorganisms express a variety of proteases that degrade many proteins of the host body and subvert host immune response. While elucidating the mechanism/s of an immune stimulatory drug that contains bile lipid, regulation of proteolytic activity was investigated. The drug
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