Heterocyclic Building Blocks-Naphthyridine

Jia, Xu; Zhang, Hanghang; Jiang, Xiangfu; Lu, Yaling; Liu, Wenjie; Yu, Jianna published the artcile< Profiling and quantitation of alkaloids in different parts of Sophora alopecuroides L. extracts by high-performance liquid chromatography with electrospray ionisation ion mobility spectrometry detection>, Application of C15H24N2O, the main research area is Sophora alopecuroides extract alkaloid HPLC electrospray ionization MS; HPLC-IMS; alkaloids; ion mobility spectrometry.

Ambient pressure electrospray ionisation ion mobility spectrometry coupled to high-performance liquid chromatog. (HPLC) was used to detect alkaloids from different parts of Sophora alopecuroides L. extracts Multiplexing ion mobility spectrometry (IMS) was used to improve the signal-to-noise ratio while maintaining high resolving power for the detecting of eluents from HPLC separation The alkaloids profile and distribution are demonstrated by retention time-drift time two-dimensional spaces, and the contents of five major alkaloids including sophoridine, sophocarpine, cytisine, aloperine, and matrine were determined in the leaf, skin, stem, seed kernel, and seed husk using the HPLC-IMS method. This method offers extra separation ability to isomers such as matrine and sophocarpine, which can be difficult to distinguish by mass spectrometry. The reduced mobilities for cytisine, sophoridine, sophocarpine, matrine, and aloperine are 0.828, 0.718, 0.731, 0.725, and 0.769 cm2/V/s, resp. The limits of detection are 0.553, 0.488, 0.479, 0.484, and 0.513 ug/mL. This method adds extra separation ability to HPLC to resolve co-eluted peaks and provides another qual. parameter besides HPLC retention time.

Phytochemical Analysis published new progress about Alkaloids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 6882-68-4 belongs to class naphthyridine, and the molecular formula is C15H24N2O, Application of C15H24N2O.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Udayakumar, Durga; Pandita, Raj K.; Horikoshi, Nobuo; Liu, Yan; Liu, Qingsong; Wong, Kwok-Kin; Hunt, Clayton R.; Gray, Nathanael S.; Minna, John D.; Pandita, Tej K.; Westover, Kenneth D. published the artcile< Torin2 suppresses ionizing radiation-induced DNA damage repair>, Electric Literature of 1223001-51-1, the main research area is ionizing radiation Torin2 mTOR inhibitor DNA damage repair cancer.

Several classes of inhibitors of the mammalian target of rapamycin (mTOR) have been developed based on its central role in sensing growth factor and nutrient levels to regulate cellular metabolism However, its ATP-binding site closely resembles other phosphatidylinositol 3-kinase-related kinase (PEKK) family members, resulting in reactivity with these targets that may also be therapeutically useful. The ATP- competitive mTOR inhibitor, Torin2, shows biochem. activity against the DNA repair-associated proteins ATM, ATR and DNA-PK, which raises the possibility that Torin2 and related compounds might radiosensitize cancerous tumors. In this study Torin2 was also found to enhance ionizing radiation-induced cell killing in conditions where ATM was dispensable, confirming the requirement for multiple PIKK targets. Moreover, Torin2 did not influence the initial appearance of γ-H2AX foci after irradiation but significantly delayed the disappearance of radiation-induced γ-H2AX foci, indicating a DNA repair defect. Torin2 increased the number of radiation-induced S-phase specific chromosome aberrations and reduced the frequency of radiation-induced CLIP and Rad51 foci formation, suggesting that Torin2 works by blocking homologous recombination (HR)-mediated DNA repair resulting in an S-phase specific DNA repair defect. We conclude that radiosensitization of tumor cells by Torin2 is associated with disrupting ATR- and ATM-dependent DNA damage responses.

Radiation Research published new progress about Attenuated total reflection. 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Electric Literature of 1223001-51-1.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Kim, Sun Woong; Kim, Hye-In; Thapa, Bikash; Nuwromegbe, Selikem; Lee, Keunwook published the artcile< Critical role of mTORC2-Akt signaling in TGF-β1-induced myofibroblast differentiation of human pterygium fibroblasts>, Recommanded Product: 9-(6-Aminopyridin-3-yl)-1-(3-(trifluoromethyl)phenyl)benzo[h][1,6]naphthyridin-2(1H)-one, the main research area is pterygium fibroblast differentiation mTORC2 Akt TGF beta 1.

In this study, we investigated the role of the mechanistic target of rapamycin (mTOR) in regulating TGF-β1-induced myofibroblastic responses in human pterygium fibroblasts (HPFs) and elucidated the relative contributions of mTOR signaling components. HPFs were pretreated with the mTOR inhibitors rapamycin and Torin2, and TGF-β1-induced expression of profibrotic markers, including α-smooth muscle actin (α-SMA) and fibronectin, was evaluated. The mTOR active-site inhibitor Torin2, which suppresses both mTORC1 and mTORC2 activity in HPFs, inhibited TGF-β1-induced expression of α-SMA and fibronectin. The induction of α-SMA and fibronectin in HPFs was abrogated by RNA interference-mediated knockdown of rictor but was only moderately affected by raptor knockdown. Akt inhibition mimicked the effect of Torin2 and rictor knockdown on myofibroblast differentiation of HPFs. mTOR inhibition potently reduced the contractile ability of HPFs in collagen gel contraction assays. This study found that mTOR signaling promoted profibrotic activation of HPFs and confirmed the importance of the mTORC2-Akt axis in TGF-β1-induced myofibroblast differentiation. Therefore, our study may open up new avenues for the development of novel therapeutic strategies involving targeting of mTOR signaling to treat pterygium.

Investigative Ophthalmology & Visual Science published new progress about Animal gene Role: BSU (Biological Study, Unclassified), BIOL (Biological Study) (EDA-FN). 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Recommanded Product: 9-(6-Aminopyridin-3-yl)-1-(3-(trifluoromethyl)phenyl)benzo[h][1,6]naphthyridin-2(1H)-one.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Awasthi, Ankita; Kumar, Pharvendra; Srikanth, Chittur V.; Sahi, Shakti; Puria, Rekha published the artcile< Invitro Evaluation of Torin2 and 2, 6-Dihydroxyacetophenone in Colorectal Cancer Therapy>, Recommanded Product: 9-(6-Aminopyridin-3-yl)-1-(3-(trifluoromethyl)phenyl)benzo[h][1,6]naphthyridin-2(1H)-one, the main research area is colorectal cancer Torin2 2 6 dihydroxyacetophenone antitumor; Docking; Drug development; Kinase inhibitor; Natural Compound; mTOR.

Colorectal cancer (CRC) is one of the most prevalent cancers diagnosed worldwide. Despite recent advances, resistance to cytotoxic and targeted therapy remains one of the greatest challenges in long-term management of colorectal cancer therapy. Recently established role of mTOR signaling in proliferation of CRC has incited for evaluation of mTOR kinase specific inhibitors in CRC therapy. Second generation mTOR kinase inhibitors including Torin2 has demonstrated efficient anticancer properties against variety of cancers and are in various stages of drug development. The time and financial constraints concomitant from discovery to development of efficient chem. inhibitors has redirected attention towards investigation of wide spread naturally occurring largely inexpensive compounds for their therapeutic potential. One such naturally occurring compound acetophenone derivative polyphenolic compound 2, 6-Dihydroxyacetophenone (DHAP) inhibits cell growth in different conditions. We investigated anticancer properties of both Torin2 and DHAP against colorectal cancer in HCT8 cell lines. Both Torin2 and DHAP inhibited growth of CRC cells at different concentrations by restricting multiple cellular functions e.g., cell cycle progression, cell migration and induced apoptosis. Treatment of HCT8 cells with natural compound DHAP resulted in reduced expression of mTOR pathway specific genes p70S6K1 and AKT1. In silico docking studies showed affinity of DHAP to mTOR kinase like Torin2. Taken together, our result vouches for role of Torin2 in CRC therapy and recommends DHAP an mTOR inhibitor, as a potential lead in the development of new therapeutic regimes against colorectal cancer.

Pathology & Oncology Research published new progress about Acetophenones Role: PAC (Pharmacological Activity), THU (Therapeutic Use), BIOL (Biological Study), USES (Uses). 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Recommanded Product: 9-(6-Aminopyridin-3-yl)-1-(3-(trifluoromethyl)phenyl)benzo[h][1,6]naphthyridin-2(1H)-one.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Dillenburg-Pilla, Patricia; Patel, Vyomesh; Mikelis, Constantinos M.; Zarate-Blades, Carlos Rodrigo; Doci, Colleen L.; Amornphimoltham, Panomwat; Wang, Zhiyong; Martin, Daniel; Leelahavanichkul, Kantima; Dorsam, Robert T.; Masedunskas, Andrius; Weigert, Roberto; Molinolo, Alfredo A.; Gutkind, J. Silvio published the artcile< SDF-1/CXCL12 induces directional cell migration and spontaneous metastasis via a CXCR4/Gαi/mTORC1 axis>, Formula: C24H15F3N4O, the main research area is CXCR4 Galphai mTORC1 axis SDF1 CXCL12 cell migration metastasis; cancer; chemotaxis; lymphangiogenesis; mTOR; rapamycin.

Multiple human malignancies rely on C-X-C motif chemokine receptor type 4 (CXCR4) and its ligand, SDF-1/CXCL12 (stroma cell-derived factor 1/C-X-C motif chemokine 12), to metastasize. CXCR4 inhibitors promote the mobilization of bone marrow stem cells, limiting their clin. application for metastasis prevention. We investigated the CXCR4-initiated signaling circuitry to identify new potential therapeutic targets. We used HeLa human cancer cells expressing high levels of CXCR4 endogenously. We found that CXCL12 promotes their migration in Boyden chamber assays and single cell tracking. CXCL12 activated mTOR (mechanistic target of rapamycin) potently in a pertussis-sensitive fashion. Inhibition of mTOR complex 1 (mTORC1) by rapamycin [drug concentration causing 50% inhibition (IC50) = 5 nM] and mTORC1/mTORC2 by Torin2 (IC50 = 6 nM), or by knocking down key mTORC1/2 components, Raptor and Rictor, resp., decreased directional cell migration toward CXCL12. We developed a CXCR4-mediated spontaneous metastasis model by implanting HeLa cells in the tongue of SCID-NOD mice, in which 80% of the animals develop lymph node metastasis. It is surprising that mTORC1 disruption by Raptor knockdown was sufficient to reduce tumor growth by 60% and spontaneous metastasis by 72%, which were nearly abolished by rapamycin. In contrast, disrupting mTORC2 had no effect in tumor growth or metastasis compared with control short hairpin RNAs. These data suggest that mTORC1 may represent a suitable therapeutic target in human malignancies using CXCR4 for their metastatic spread.

FASEB Journal published new progress about Angiogenesis. 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Formula: C24H15F3N4O.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Quiros-Fernandez, Isaac; Figueroa-Protti, Lucia; Arias-Arias, Jorge L.; Brenes-Cordero, Norman; Siles, Francisco; Mora, Javier; Mora-Rodriguez, Rodrigo Antonio published the artcile< Perturbation-Based Modeling Unveils the Autophagic Modulation of Chemosensitivity and Immunogenicity in Breast Cancer Cells>, Application In Synthesis of 1223001-51-1, the main research area is perturbation modeling unveil autophagic modulation chemosensitivity immunogenicity breast cancer; autophagy; chemotherapy; immunogenic cell death; perturbation-based modeling.

In the absence of new therapeutic strategies, chemotherapeutic drugs are the most widely used strategy against metastatic breast cancer, in spite of eliciting multiple adverse effects and having low responses with an average 5-yr patient survival rate. Among the new therapeutic targets that are currently in clin. trials, here, we addressed the association between the regulation of the metabolic process of autophagy and the exposure of damage-associated mol. patterns associated (DAMPs) to immunogenic cell death (ICD), which has not been previously studied. After validating an mCHR-GFP tandem LC3 sensor capacity to report dynamic changes of the autophagic metabolic flux in response to external stimuli and demonstrating that both basal autophagy levels and response to diverse autophagy regulators fluctuate among different cell lines, we explored the interaction between autophagy modulators and chemotherapeutic agents in regards of cytotoxicity and ICD using three different breast cancer cell lines. Since these interactions are very complex and variable throughout different cell lines, we designed a perturbation-based model in which we propose specific modes of action of chemotherapeutic agents on the autophagic flux and the corresponding strategies of modulation to enhance the response to chemotherapy. Our results point towards a promising therapeutic potential of the metabolic regulation of autophagy to overcome chemotherapy resistance by eliciting ICD.

Metabolites published new progress about Autophagosome. 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Application In Synthesis of 1223001-51-1.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Tamir, Tigist Y.; Bowman, Brittany M.; Agajanian, Megan J.; Goldfarb, Dennis; Schrank, Travis P.; Stohrer, Trent; Hale, Andrew E.; Siesser, Priscila F.; Weir, Seth J.; Murphy, Ryan M.; LaPak, Kyle M.; Weissman, Bernard E.; Moorman, Nathaniel J.; Ben Major, M. published the artcile< Gain-of-function genetic screen of the kinome reveals BRSK2 as an inhibitor of the NRF2 transcription factor>, Category: naphthyridine, the main research area is nuclear erythroid transcription factor brain specific kinase human disease; AMPK; BRSK1; BRSK2; Functional genomics; Kinase; NRF2; Oxidative stress response; Phosphoproteomics; mTOR.

Nuclear factor erythroid 2-related factor 2 (NFE2L2, also known as NRF2) is a transcription factor and master regulator of cellular antioxidant response. Aberrantly high NRF2-dependent transcription is recurrent in human cancer, but conversely NRF2 activity diminishes with age and in neurodegenerative and metabolic disorders. Although NRF2-activating drugs are clin. beneficial, NRF2 inhibitors do not yet exist. Here, we describe use of a gain-of-function genetic screen of the kinome to identify new druggable regulators of NRF2 signaling. We found that the under-studied protein kinase brain-specific kinase 2 (BRSK2) and the related BRSK1 kinases suppress NRF2-dependent transcription and NRF2 protein levels in an activity-dependent manner. Integrated phosphoproteomics and RNAseq studies revealed that BRSK2 drives 5′-AMP-activated protein kinase α2 (AMPK) signaling and suppresses the mTOR pathway. As a result, BRSK2 kinase activation suppresses ribosome-RNA complexes, global protein synthesis and NRF2 protein levels. Collectively, our data illuminate the BRSK2 and BRSK1 kinases, in part by functionally connecting them to NRF2 signaling and mTOR. This signaling axis might prove useful for therapeutically targeting NRF2 in human disease.

Journal of Cell Science published new progress about Activating transcription factor 3 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Category: naphthyridine.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Roberts, Lindsay S.; Yan, Peter; Bateman, Leslie A.; Nomura, Daniel K. published the artcile< Mapping Novel Metabolic Nodes Targeted by Anti-Cancer Drugs that Impair Triple-Negative Breast Cancer Pathogenicity>, Recommanded Product: 9-(6-Aminopyridin-3-yl)-1-(3-(trifluoromethyl)phenyl)benzo[h][1,6]naphthyridin-2(1H)-one, the main research area is drug screening proteomic metabolomic profiling breast cancer pathogenicity.

Triple-neg. breast cancers (TNBCs) are estrogen receptor, progesterone receptor, and HER2 receptor-neg. subtypes of breast cancers that show the worst prognoses and lack targeted therapies. Here, we have coupled the screening of ∼400 anticancer agents that are under development or in the clinic with chemoproteomic and metabolomic profiling to identify novel metabolic mechanisms for agents that impair TNBC pathogenicity. We identify 20 anticancer compounds that significantly impaired cell survival across multiple types of TNBC cells. Among these 20 leads, the phytoestrogenic natural product licochalcone A was of interest, since TNBCs are unresponsive to estrogenic therapies, indicating that licochalcone A was likely acting through another target. Using chemoproteomic profiling approaches, we reveal that licochalcone A impairs TNBC pathogenicity, not through modulating estrogen receptor activity but rather through inhibiting prostaglandin reductase 1, a metabolic enzyme involved in leukotriene B4 inactivation. We also more broadly performed metabolomic profiling to map addnl. metabolic mechanisms of compounds that impair TNBC pathogenicity. Overlaying lipidomic profiling with drug responses, we find that deubiquitinase inhibitors cause dramatic elevations in acyl carnitine levels, which impair mitochondrial respiration and contribute to TNBC pathogenic impairments. We thus put forth two unique metabolic nodes that are targeted by drugs or drug candidates that impair TNBC pathogenicity. Our results also showcase the utility of coupling drug screens with chemoproteomic and metabolomic profiling to uncover unique metabolic drivers of TNBC pathogenicity.

ACS Chemical Biology published new progress about Antitumor agents. 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Recommanded Product: 9-(6-Aminopyridin-3-yl)-1-(3-(trifluoromethyl)phenyl)benzo[h][1,6]naphthyridin-2(1H)-one.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Wang, Beilei; Deng, Yuanxin; Chen, Yongfei; Yu, Kailin; Wang, Aoli; Liang, Qianmao; Wang, Wei; Chen, Cheng; Wu, Hong; Hu, Chen; Miao, Weili; Hur, Wooyoung; Wang, Wenchao; Hu, Zhenquan; Weisberg, Ellen L.; Wang, Jinhua; Ren, Tao; Wang, Yinsheng; Gray, Nathanael S.; Liu, Qingsong; Liu, Jing published the artcile< Structure-activity relationship investigation for benzonaphthyridinone derivatives as novel potent Bruton's tyrosine kinase (BTK) irreversible inhibitors>, Synthetic Route of 1223001-51-1, the main research area is benzo naphthyridinone derivative structure preparation Bruton’s tyrosine kinase cancer; B-Cell lymphoma; BTK; Irreversible inhibitor; Kinase inhibitor; Structure-activity relationship.

Through a structure-based drug design approach, a tricyclic benzonaphthyridinone pharmacophore was used as a starting point for carrying out detailed medicinal structure-activity relationhip (SAR) studies geared toward characterization of a panel of proposed BTK inhibitors, including 6 (QL-X-138), 7 (BMX-IN-1) and 8 (QL47). These studies led to the discovery of the novel potent irreversible BTK inhibitor, compound 18 (CHMFL-BTK-11). Kinetic anal. of compound 18 revealed an irreversible binding efficacy (kinact/Ki) of 0.01 μM-1s-1. Compound 18 potently inhibited BTK kinase Y223 auto-phosphorylation (EC50 < 100 nM), arrested cell cycle in G0/G1 phase, and induced apoptosis in Ramos, MOLM13 and Pfeiffer cells. We believe these features would make 18 a good pharmacol. tool for studying BTK-related pathologies. European Journal of Medicinal Chemistry published new progress about Antiproliferative agents. 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Synthetic Route of 1223001-51-1.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Al-Ali, Hassan; Lemmon, Vance P.; Bixby, John L. published the artcile< Phenotypic screening of small-molecule inhibitors: implications for therapeutic discovery and drug target development in traumatic brain injury>, Category: naphthyridine, the main research area is TBI therapeutic discovery drug target inhibitor phenotypic screening; Axon regeneration; CNS injury; Cell-based assay; Drug discovery; High-content screening; Kinase inhibitor; Primary neurons.

The inability of central nervous system (CNS) neurons to regenerate damaged axons and dendrites following traumatic brain injury (TBI) creates a substantial obstacle for functional recovery. Apoptotic cell death, deposition of scar tissue, and growth-repressive mols. produced by glia further complicate the problem and make it challenging for re-growing axons to extend across injury sites. To date, there are no approved drugs for the treatment of TBI, accentuating the need for relevant leads. Cell-based and organotypic bioassays can better mimic outcomes within the native CNS microenvironment than target-based screening methods and thus should speed the discovery of therapeutic agents that induce axon or dendrite regeneration. Addnl., when used to screen focused chem. libraries such as small-mol. protein kinase inhibitors, these assays can help elucidate mol. mechanisms involved in neurite outgrowth and regeneration as well as identify novel drug targets. Here, we describe a phenotypic cellular (high content) screening assay that utilizes brain-derived primary neurons for screening small-mol. chem. libraries.

Methods in Molecular Biology (New York, NY, United States) published new progress about Antibodies and Immunoglobulins Role: BUU (Biological Use, Unclassified), BIOL (Biological Study), USES (Uses). 1223001-51-1 belongs to class naphthyridine, and the molecular formula is C24H15F3N4O, Category: naphthyridine.

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem