Dataset Information

Melitracenium chloride.

ABSTRACT: IN THE TITLE COMPOUND [SYSTEMATIC NAME: 3-(10,10-dimethyl-anthracen-9-yl-idene)-N,N,N-trimethyl-propanaminium chlor-ide], C(21)H(26)N(+)·Cl(-), the cyclo-hexane ring adopts a chair conformation. The dihedral angle between the terminal benzene rings is 40.43?(12)°. In the crystal, ions are linked through inter-molecular N-H?Cl and C-H?Cl hydrogen bonds, forming supra-molecular layers parallel to the bc plane.

SUBMITTER: Fun HK

PROVIDER: S-EPMC3152036 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature

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Melitracenium chloride.

Fun Hoong-Kun HK Hemamalini Madhukar M Siddegowda M S MS Yathirajan H S HS Narayana B B

Acta crystallographica. Section E, Structure reports online 20110618 Pt 7

IN THE TITLE COMPOUND [SYSTEMATIC NAME: 3-(10,10-dimethyl-anthracen-9-yl-idene)-N,N,N-trimethyl-propanaminium chlor-ide], C(21)H(26)N(+)·Cl(-), the cyclo-hexane ring adopts a chair conformation. The dihedral angle between the terminal benzene rings is 40.43 (12)°. In the crystal, ions are linked through inter-molecular N-H⋯Cl and C-H⋯Cl hydrogen bonds, forming supra-molecular layers parallel to the bc plane. ...[more]

PMID: 21837115

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Project description:Aims/hypothesis AGEs are considered environmental contributors of type 1 diabetes, but the exact role AGEs play early in pathogenesis of the disease, remains unidentified. We aimed to reduce AGEs with the pharmacotherapy alagebrium chloride in MIN6N8 cells and early in life in NOD mice to determine its impact on beta cell immunogenicity, function, and disease progression. Methods MIN6N8 cells were cultured with AGEs with or without short-term alagebrium therapy to determine the effect on ER stress and beta cell antigen presentation via a reporter assay for protein responses in the unfolded protein response, the enzymatic activity of endoplasmic reticulum aminopeptidase-1 (ERAP1) and the immunopeptidome. To determine the effect of short-term alagebrium therapy on beta cells in vivo, female NOD mice were treated with alagebrium and insulin secretion, insulitis, and immune cell repertoire were studied. Adoptive transfer studies and diabetes progression studies were used to consider the impact of alagebrium on immune cell function and disease outcome. Results In MIN6N8 cells, alagebrium therapy inhibited the induction of endoplasmic reticulum (ER) stress and the activity of ERAP1 by AGE-modified proteins. Alagebrium treated-MIN6N8 cells did not change the MHC Class I presentation of known beta cell antigens but did induce proteomic changes related to ER homeostatic pathways. Prior to overt autoimmune diabetes, female NOD mice treated with alagebrium for 30-40 days had improved insulin secretion, reduced insulitis and amplified proportions of pancreatic CD8+ T cells, mature B cells and F4/80+ macrophages. Splenocytes from alagebrium-treated mice adoptively transferred disease to NODscid recipients and maintained interferon production in vitro. While partial protection of islets by alagebrium was seen following the adoptive transfer of activated NOD G9C8 transgenic TCR CD8+ T cells, alagebrium therapy in NOD mice did not reduce diabetes progression. Conclusions/interpretation Our data suggests that in experimental models of diabetes, short-term alagebrium treatment allows for beta cell improvement, and maintenance of immune cell function, which does not fully mitigate diabetes progression.

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Melitracenium chloride.

Publications

Melitracenium chloride.

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