Author: Jessica.F

Zhang, Lina; Jiang, Yuan; Deng, Songyun; Mo, Yunan; Huang, Yan; Li, Wenchao; Ge, Chenglong; Ren, Xinshu; Zhang, Haisong; Zhang, Xiaolei; Peng, Qianyi; Liu, Zhiyong; Huang, Li; Zhou, Fan; Ai, Yuhang published the artcile< S100B/RAGE/Ceramide signaling pathway is involved in sepsis-associated encephalopathy>, Recommanded Product: p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride, the main research area is human sepsis encephalopathy SB RAGE ceramide signaling pathway; Ceramide; Drp1; Mitochondrial dynamics; RAGE; S100B; Sepsis-associated encephalopathy.

Sepsis-associated encephalopathy (SAE) is one of the most common complications of sepsis, and it might lead to long-term cognitive dysfunction and disability. This study aimed to explore the role of S100 calcium binding protein B (S100B)/RAGE/ceramide signaling pathway in SAE. FPS-ZM1 (an inhibitor of RAGE), myriocin and GW4869 (an inhibitor of ceramide) were used to explore the role of S100B/RAGE/ceramide in acute brain injury and long-term cognitive impairment in sepsis. In addition, Mdivi-1 (inhibitor of Drp1) and Drp1 siRNA were utilized to assess the effects of C2-ceramide on neuronal mitochondria, and to explore the specific underlying mechanism in C2 ceramide-induced death of HT22 mouse hippocampal neuronal cells. Western blot anal. showed that sepsis significantly up-regulated S100B and RAGE. Nissl staining and Morris water maze (MWM) test revealed that inhibition of RAGE with FPS-ZM1 markedly attenuated cecal ligation and puncture (CLP)-induced brain damage and cognitive dysfunction. Furthermore, FPS-ZM1 relieved sepsis-induced C2-ceramide accumulation and abnormal mitochondrial dynamics. Moreover, inhibition of ceramide also showed similar protective effects both in vivo and in vitro. Furthermore, Mdivi-1 and Drp1 siRNA significantly reduced C2-ceramide-induced neuronal mitochondrial fragmentation and cell apoptosis in vitro. This study confirmed that S100B regulates mitochondrial dynamics through RAGE/ceramide pathway, in addition to the role of this pathway in acute brain injury and long-term cognitive impairment during sepsis.

Life Sciences published new progress about Advanced glycosylation end product receptors Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Recommanded Product: p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Sadeghzadeh, Seyed Mohsen; Zhiani, Rahele published the artcile< Synthesis of pyridopyrimidinones by N-heterocyclic carbene palladium(II) supported on KCC-1 in aqueous solution>, Application of C4H5BrN2, the main research area is silica supported imidazolyl diiodopyridinepalladium nanocatalyst preparation; pyridopyrimidine preparation chemoselective; aminopyridine acrylate one pot palladium nanocatalyst.

New N,N’-substituted imidazolium salts supported on KCC-1 and their corresponding diiodopyridinepalladium (II) complexes (KCC-1/Pd-NHC-Py) was developed for synthesis of pyridopyrimidinones such as I [R = H, 7-F, 9-Me, etc.; R1 = Me, Bn] from 2-aminopyridines and Baylis-Hillman adducts in excellent yields with remarkable chemoselectivity. This morphol. ultimately led to higher catalytic activity for the KCC-1-supported nanoparticles. The KCC-1/Pd-NHC-Py NPs were thoroughly characterized by using TEM, FESEM, TGA, and BET.

Journal of Organometallic Chemistry published new progress about Aminopyridines Role: RCT (Reactant), RACT (Reactant or Reagent). 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Application of C4H5BrN2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Novotny, Ales; Novotny, Jan; Kejnovska, Iva; Vorlickova, Michaela; Fiala, Radovan; Marek, Radek published the artcile< Revealing structural peculiarities of homopurine GA repetition stuck by i-motif clip>, Category: imidazoles-derivatives, the main research area is homopurine protein motif structural peculiarity.

Non-canonical forms of nucleic acids represent challenging objects for both structure-determination and investigation of their potential role in living systems. In this work, we uncover a structure adopted by GA repetition locked in a parallel homoduplex by an i-motif. A series of DNA oligonucleotides comprising GAGA segment and C3 clip is analyzed by NMR and CD spectroscopies to understand the sequence-structure-stability relationships. We demonstrate how the relative position of the homopurine GAGA segment and the C3 clip as well as single-base mutations (guanine deamination and cytosine methylation) affect base pairing arrangement of purines, i-motif topol. and overall stability. We focus on oligonucleotides C3GAGA and methylated GAGAC3 exhibiting the highest stability and structural uniformity which allowed determination of high-resolution structures further analyzed by unbiased mol. dynamics simulation. We describe sequence-specific supramol. interactions on the junction between homoduplex and i-motif blocks that contribute to the overall stability of the structures. The results show that the distinct structural motifs can not only coexist in the tight neighborhood within the same mol. but even mutually support their formation. Our findings are expected to have general validity and could serve as guides in future structure and stability investigations of nucleic acids.

Nucleic Acids Research published new progress about Deamination. 452-06-2 belongs to class imidazoles-derivatives, and the molecular formula is C5H5N5, Category: imidazoles-derivatives.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Haneda, Satoshi; Okui, Ayaka; Ueba, Chigusa; Hayashi, Masahiko published the artcile< An efficient synthesis of 2-arylimidazoles by oxidation of 2-arylimidazolines using activated carbon-O2 system and its application to palladium-catalyzed Mizoroki-Heck reaction>, Application In Synthesis of 36947-69-0, the main research area is arylimidazoline activated carbon oxygen oxidation; imidazole aryl preparation; bromotoluene alkene palladium Mizoroki Heck arylimidazoline; alkene bromotoluene palladium Mizoroki Heck arylimidazole; methylphenyl alkene preparation; Mizoroki Heck catalyst palladium arylimidazoline; palladium Mizoroki Heck catalyst arylimidazole.

Oxidative conversion of 2-substituted imidazolines (dihydroimidazoles) to the corresponding imidazoles, e.g., I, was achieved by an activated carbon-O2 system. Also, the 2-arylimidazolines and 2-arylimidazoles have been found to work as simple ligands in the palladium-catalyzed Mizoroki-Heck reaction.

Tetrahedron published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent) (imidazolinyl). 36947-69-0 belongs to class imidazoles-derivatives, and the molecular formula is C7H12N2, Application In Synthesis of 36947-69-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Matsumoto, Akihiro; Takahashi, Yuki; Nishikawa, Makiya; Sano, Kohei; Morishita, Masaki; Charoenviriyakul, Chonlada; Saji, Hideo; Takakura, Yoshinobu published the artcile< Accelerated growth of B16BL6 tumor in mice through efficient uptake of their own exosomes by B16BL6 cells>, SDS of cas: 6823-69-4, the main research area is mouse melanoma tumor cell growth exosome; Biodistribution; exosomes; melanoma; proliferation; uptake.

Exosomes are extracellular vesicles released by various cell types and play roles in cell-cell communication. Several studies indicate that cancer cell-derived exosomes play important pathophysiol. roles in tumor progression. Biodistribution of cancer cell-derived exosomes in tumor tissue is an important factor for determining their role in tumor proliferation; however, limited studies have assessed the biodistribution of exosomes in tumor tissues. In the present study, we examined the effect of cancer-cell derived exosomes on tumor growth by analyzing their biodistribution. Murine melanoma B16BL6-derived exosomes increased the proliferation and inhibited the apoptosis of B16BL6 cells, which was associated with an increase and decrease in the levels of proliferation- and apoptosis-related proteins, resp. GW4869-induced inhibition of exosome secretion decreased the proliferation of B16BL6 cells, and treatment of GW4869-treated cells with B16BL6-derived exosomes restored their proliferation. Next, we treated B16BL6 tumors in mice with B16BL6-derived exosomes and examined the biodistribution and cellular uptake of these exosomes. After the intratumoral injection of radiolabeled B16BL6-derived exosomes, most radioactivity was detected within the tumor tissues of mice. Fractionation of cells present in the tumor tissue showed that fluorescently labeled exosomes were mainly taken up by B16BL6 cells. Moreover, intratumoral injection of B16BL6-derived exosomes promoted tumor growth, whereas intratumoral injection of GW4869 suppressed tumor growth. These results indicate that B16BL6 cells secrete and take up their own exosomes to induce their proliferation and inhibit their apoptosis, which promotes tumor progression.

Cancer Science published new progress about Apoptosis. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, SDS of cas: 6823-69-4.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Taylor, Steven J.; Abeywardane, Asitha; Liang, Shuang; Muegge, Ingo; Padyana, Anil K.; Xiong, Zhaoming; Hill-Drzewi, Melissa; Farmer, Bennett; Li, Xiang; Collins, Brandon; Li, John Xiang; Heim-Riether, Alexander; Proudfoot, John; Zhang, Qiang; Goldberg, Daniel; Zuvela-Jelaska, Ljiljana; Zaher, Hani; Li, Jun; Farrow, Neil A. published the artcile< Fragment-Based Discovery of Indole Inhibitors of Matrix Metalloproteinase-13 [Erratum to document cited in CA155:648013]>, Formula: C4H5BrN2, the main research area is erratum indole derivative structure MMP 13 inhibitor arthritis.

The PDB accession codes of MMP-13 in complex with 1, 10, and 15 are 5BOT, 5BOY, and 5BPA, resp.

Journal of Medicinal Chemistry published new progress about Antiarthritics. 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Formula: C4H5BrN2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Laviron, Etienne published the artcile< Polarographic and physicochemical study of pyridine derivatives and heterocyclic bases. III. Nitro, carbonyl, and halogen-containing derivatives of imidazole>, Quality Control of 1003-21-0, the main research area is .

Exptl. data from polarographic ultraviolet and spectrophotometric measurements showed that the 4 (or 5)-NO2 (or Br) derivative of imidazole exists almost totally as I (R =NO2 or Br) in solution

Bulletin de la Societe Chimique de France published new progress about Ionization. 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Quality Control of 1003-21-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Okazaki, Shogo; Noguchi-Yachide, Tomomi; Sakai, Taki; Ishikawa, Minoru; Makishima, Makoto; Hashimoto, Yuichi; Yamaguchi, Takao published the artcile< Discovery of N-(1-(3-(4-phenoxyphenyl)-1,2,4-oxadiazol-5-yl)ethyl)acetamides as novel acetyl-CoA carboxylase 2 (ACC2) inhibitors with peroxisome proliferator-activated receptor α/δ (PPARα/δ) dual agonistic activity>, Reference of 401567-00-8, the main research area is phenoxyphenyloxadiazolylethylacetamide acetyl CoA carboxylase ACC2 inhibitor PPAR agonist; Acetyl-CoA carboxylase; Multi-target drug; Peroxisome proliferator-activated receptor.

Acetyl-Co-A carboxylases (ACCs) catalyze a critical step in de novo lipogenesis, and are considered as promising targets for treatment of obesity, dyslipidemia and type 2 diabetes mellitus. On the other hand, peroxisome proliferator-activated receptors (PPARs) are well-established therapeutic targets for these metabolic syndrome-related diseases. Therefore, the authors considered that dual modulators of ACC and PPARs would be promising candidates as therapeutic agents. Here, the authors designed a series of acetamides based on the mol. similarity between ACC inhibitors and PPAR agonists. Screening of the synthesized compounds identified N-(1-(3-(4-phenoxyphenyl)-1,2,4-oxadiazol-5-yl)ethyl)acetamides as novel ACC2 inhibitors with PPARα/PPARδ dual agonistic activity. Structure-activity relationship studies and further structural elaboration afforded compounds with distinct activity profiles. The findings should be helpful for the discovery of candidate agents with an appropriate balance of ACC-inhibitory and PPAR-activating activities for therapeutic lipid control.

Bioorganic & Medicinal Chemistry published new progress about Homo sapiens. 401567-00-8 belongs to class imidazoles-derivatives, and the molecular formula is C8H4ClN3, Reference of 401567-00-8.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Huang, Limin; Hu, Chaoquan; Chao, Hui; Zhang, Yu; Li, Yong; Hou, Jing; Xu, Zhong; Lu, He; Li, Hong; Chen, Hui published the artcile< Drug-resistant endothelial cells facilitate progression, EMT and chemoresistance in nasopharyngeal carcinoma via exosomes>, Category: imidazoles-derivatives, the main research area is nasopharyngeal carcinoma endothelial cell EMT chemoresistance exosome; Drug resistance; Exosome; Human microvascular endothelial cells (HMECs); Nasopharyngeal carcinoma.

Recent antitumor drug development has included investigation of a wide variety of anti-angiogenesis therapies. Because cancer cells in tumors require new blood vessels to grow and spread, they stimulate capillary proliferation from existing vessels as well as new vessel formation from endothelial precursor cells. Our previous findings suggested that drug resistance in mouse endothelial cells supported tumor growth, but the relationship between endothelial cells (ECs) and nasopharyngeal carcinoma (NPC) cells remained unclear. Exosomes are small membrane vesicles that are released by several cell types, including human microvascular ECs (HMECs). Exosomes carrying membrane and cytoplasmic constituents have been described as participants in a novel mechanism of cell-to-cell communication. In the present study, we investigated the mechanisms underlying the interactions between HMECs and NPC cells. We found that drug-resistant HMECs secreted small heterogeneous 40-100 nm vesicles, defined as exosomes. Co-incubation of NPC cells with doxorubicin-resistant (R-DOX) HMEC-derived exosomes resulted in promotion of their proliferation, migration, and chemoresistance, as well as changes in the expression of epithelial-mesenchymal transition (EMT) markers. These effects were significantly inhibited by treatment with GW4869 (an exosome inhibitor). We also found that GW4869 inhibited the stimulation of drug-resistant HMECs on NPC progression by modulating EMT in vivo. These data suggest that exosomes participate in a novel mechanism by which drug-resistant ECs enhance NPC progression.

Cellular Signalling published new progress about Apoptosis. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Category: imidazoles-derivatives.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Liu, Chu-Xiao; Guo, Si-Kun; Nan, Fang; Xu, Yi-Feng; Yang, Li; Chen, Ling-Ling published the artcile< RNA circles with minimized immunogenicity as potent PKR inhibitors>, SDS of cas: 452-06-2, the main research area is RNA immunogenicity PKR inhibitor; PKR; PKR inhibitor; T4 RNA ligase; circular RNA; circular RNA structure; dsRNA; group I intron; immune response; permuted Anabaena pre-tRNA group I intron; phage T4 thymidylate synthase gene.

Exon back-splicing-generated circular RNAs, as a group, can suppress double-stranded RNA (dsRNA)-activated protein kinase R (PKR) in cells. We have sought to synthesize immunogenicity-free, short dsRNA-containing RNA circles as PKR inhibitors. Here, we report that RNA circles synthesized by permuted self-splicing thymidylate synthase (td) introns from T4 bacteriophage or by Anabaena pre-tRNA group I intron could induce an immune response. Autocatalytic splicing introduces ∼74 nt td or ∼186 nt Anabaena extraneous fragments that can distort the folding status of original circular RNAs or form structures themselves to provoke innate immune responses. In contrast, synthesized RNA circles produced by T4 RNA ligase without extraneous fragments exhibit minimized immunogenicity. Importantly, directly ligated circular RNAs that form short dsRNA regions efficiently suppress PKR activation 103- to 106-fold higher than reported chem. compounds C16 and 2-AP, highlighting the future use of circular RNAs as potent inhibitors for diseases related to PKR overreaction.

Molecular Cell published new progress about Anabaena. 452-06-2 belongs to class imidazoles-derivatives, and the molecular formula is C5H5N5, SDS of cas: 452-06-2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem