Modulation of Ion Channels by Cysteine-Rich Peptides: From Sequence to Structure.

Modulation of Ion Channels by Cysteine-Rich Peptides: From Sequence to Structure. Adv Pharmacol. 2017;79:199-223 Authors: Mobli M, Undheim EAB, Rash LD Abstract Venom peptides are natural ligands of ion channels and have been used extensively in pharmacological characterization of various ion channels and receptors. In this chapter, we survey all known venom peptide ion-channel modulators. Our survey reveals that the majority of venom peptides characterized to date target voltage-gated sodium or potassium channels. We further find that the majority of these peptides are found in scorpion and spider venoms. We discuss the influence of the pharmacological tools available in biasing discovery and the classical "toxin-to-sequence" approach to venom peptide biodiscovery. The impact of high-throughput sequencing on the existing discovery framework is likely to be significant and we propose here an alternative "sequence-to-toxin" approach to peptide screening, relying more on recently developed high-throughput methods. Methods for production and characterization of disulfide rich toxins in a high-throughput setting are then described, focusing on bacterial protein expression and solution state structural characterization by NMR spectroscopy. Finally, the role of X-ray crystallography and cryo-EM are highlighted by discussing the currently known channel-peptide complexes. PMID: 28528669 [PubMed - in process]
Source: Advances in Pharmacology - Category: Drugs & Pharmacology Authors: Tags: Adv Pharmacol Source Type: research

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In this study, we found that TLR1/TLR2 expression predicted favorable prognosis of lung cancer patients. In the related mice tumor model, TLR1/TLR2 activation by synthetic bacterial lipoprotein (BLP), a TLR1/2 agonist, greatly inhibited tumor growth and selectively decreased monocytic MDSCs (M-MDSCs). Furthermore, BLP treatment redirected M-MDSC differentiation towards M1 macrophage through JNK pathway, and thus blocked the suppressive activity of M-MDSCs in a TLR2-dependent manner. Therefore, our data demonstrated that TLR2 could be a promising biomarker and a potential immunotherapeutic target for lung cancer.
Source: Molecular Immunology - Category: Allergy & Immunology Source Type: research
Publication date: August 2019Source: Molecular Immunology, Volume 112Author(s): Elizabeth A. Bemis, Jill M. Norris, Jennifer Seifert, Ashley Frazer-Abel, Yuko Okamoto, Marie L. Feser, M. Kristen Demoruelle, Kevin D. Deane, Nirmal K. Banda, V. Michael HolersAbstractRheumatoid arthritis (RA) is a complex autoimmune disease with an etiology that is not yet well understood, disproportionally affects women and also varies in incidence and prevalence by population. The presence of anti-citrullinated protein antibodies (ACPA) is a highly specific biomarker for the diagnosis of clinically apparent RA. ACPA are also present in the ...
Source: Molecular Immunology - Category: Allergy & Immunology Source Type: research
Publication date: Available online 14 June 2019Source: Analytic Methods in Accident ResearchAuthor(s): Lai Zheng, Tarek Sayed, Mohamed EssaAbstractA Bayesian hierarchical modeling (BHM) approach is used to model non-stationary traffic conflict extremes of different sites together for crash estimation. The hierarchical structure has three layers, a data layer that is modeled with a generalized extreme value (GEV) distribution, a latent Gaussian process layer that relates parameters of GEV to covariates and the unobserved heterogeneity, and a prior layer with prior distributions to characterize the latent process. The propos...
Source: Analytic Methods in Accident Research - Category: Accident Prevention Source Type: research
Publication date: Available online 14 June 2019Source: Stem Cell ResearchAuthor(s): Nupur Bhargava, Shashank Jaitly, Sangam Giri Goswami, Suman Jain, Debojyoti Chakraborty, Sivaprakash RamalingamAbstractSickle cell disease (SCD) is an autosomal recessive disorder caused by a mutation in β-globin (HBB) gene. We have generated an induced pluripotent stem cell (iPSC) line, IGIBi001-A from an Indian sickle cell patient with a homozygous HBB gene mutation using Sendai virus reprogramming system. Characterization of IGIBi001-A showed that these iPSCs are transgene-free and expressed pluripotent stem cell markers. They had a...
Source: Stem Cell Research - Category: Stem Cells Source Type: research
Publication date: Available online 14 June 2019Source: Stem Cell ResearchAuthor(s): Nutnicha Tantarungsee, Zaukir Bostan Ali, Rungtip Soi-ampornkul, Chuda Rujitharanawong, Chanika Subchookul, Alisa Ritthaphai, Bootsakorn Boonkaew, Methichit Wattanapanitch, Kanchalit Thanomkitti, Daranporn Triwongwaranat, Chinnavuth Vatanashevanopakorn, Rattapon ThuangtongAbstractAn induced pluripotent stem cell (iPSC) line, MUSIi010-A, was established by Sendai virus (SeV) transduction of scalp fibroblasts from a 59-year-old male with androgenetic alopecia (AGA). Pluripotency of the iPSC line was verified by immunofluorescence staining of ...
Source: Stem Cell Research - Category: Stem Cells Source Type: research
Authors: Malergue MC, Ohanessian A, Zannis K, Bruneval P, Ennezat PV PMID: 31199198 [PubMed - as supplied by publisher]
Source: Acta Cardiologica - Category: Cardiology Tags: Acta Cardiol Source Type: research
This report could be used to provide guidance for both practical and economical approaches. PMID: 31190617 [PubMed - as supplied by publisher]
Source: Acta Cardiologica - Category: Cardiology Tags: Acta Cardiol Source Type: research
Authors: Lee JH, Nam JH, Park JS, Lee DH PMID: 31190481 [PubMed - as supplied by publisher]
Source: Korean Circulation Journal - Category: Cardiology Tags: Korean Circ J Source Type: research
CONCLUSIONS: These data provide the current PCI practice pattern with the use of FFR and IVUS in intermediate lesion. More common use of FFR for intermediate lesion should be encouraged. PMID: 31190480 [PubMed - as supplied by publisher]
Source: Korean Circulation Journal - Category: Cardiology Tags: Korean Circ J Source Type: research
CONCLUSIONS: Separate examination of control rates demonstrated different sex- and age-differential trends, which would have been overlooked in combined control rates. PMID: 31190479 [PubMed - as supplied by publisher]
Source: Korean Circulation Journal - Category: Cardiology Tags: Korean Circ J Source Type: research
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