Highly recurrent CBS epimutations in gastric cancer CpG island methylator phenotypes and inflammation was written by Padmanabhan, Nisha;Kyon, Huang Kie;Boot, Arnoud;Lim, Kevin;Srivastava, Supriya;Chen, Shuwen;Wu, Zhiyuan;Lee, Hyung-O. K.;Mukundan, Vineeth T.;Chan, Charlene;Chan, Yarn Kit;Xuewen, Ong;Pitt, Jason J.;Isa, Zul Fazreen Adam;Xing, Manjie;Lee, Ming Hui;Tan, Angie Lay Keng;Ting, Shamaine Ho Wei;Luftig, Micah A.;Kappei, Dennis;Kruger, Warren D.;Bian, Jinsong;Ho, Ying Swan;Teh, Ming;Rozen, Steve George;Tan, Patrick. And the article was included in Genome Biology in 2021.Synthetic Route of C11H15N2O8P The following contents are mentioned in the article:
CIMP (CpG island methylator phenotype) is an epigenetic mol. subtype, observed in multiple malignancies and associated with the epigenetic silencing of tumor suppressors. Currently, for most cancers including gastric cancer (GC), mechanisms underlying CIMP remain poorly understood. We sought to discover mol. contributors to CIMP in GC, by performing global DNA methylation, gene expression, and proteomics profiling across 14 gastric cell lines, followed by similar integrative anal. in 50 GC cell lines and 467 primary GCs. We identify the cystathionine beta-synthase enzyme (CBS) as a highly recurrent target of epigenetic silencing in CIMP GC. Likewise, we show that CBS epimutations are significantly associated with CIMP in various other cancers, occurring even in premalignant gastroesophageal conditions and longitudinally linked to clin. persistence. Of note, CRISPR deletion of CBS in normal gastric epithelial cells induces widespread DNA methylation changes that overlap with primary GC CIMP patterns. Reflecting its metabolic role as a gatekeeper interlinking the methionine and homocysteine cycles, CBS loss in vitro also causes reductions in the anti-inflammatory gasotransmitter hydrogen sulfide (H2S), with concomitant increase in NF-κ B activity. In a murine genetic model of CBS deficiency, preliminary data indicate upregulated immune-mediated transcriptional signatures in the stomach. Our results implicate CBS as a bi-faceted modifier of aberrant DNA methylation and inflammation in GC and highlights H2S donors as a potential new therapy for CBS-silenced lesions. This study involved multiple reactions and reactants, such as ((2R,3S,4R,5R)-5-(3-Carbamoylpyridin-1-ium-1-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl hydrogen phosphate (cas: 1094-61-7Synthetic Route of C11H15N2O8P).
((2R,3S,4R,5R)-5-(3-Carbamoylpyridin-1-ium-1-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl hydrogen phosphate (cas: 1094-61-7) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides are stable compounds. The lower-melting members (such as acetamide) can be readily purified by fractional distillation. Most amides are solids which have low solubilities in water.Synthetic Route of C11H15N2O8P
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Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics