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Peer Review Research Demonstrates Benefits of Chromatrap Solid State ChIP Technology

publication date: Jun 30, 2016
 | 
author/source: Porvair Sciences Limited

Chromatrap reports on 3 further customer papers published in different prestigious peer reviewed journals, which cite how its proprietary solid state Chromatin Immunoprecipitation (ChIP) technology has enabled ground breaking research.

lab tech porvairA recent study published in Drug Metabolism & Deposition [1] looks at " The role of Chromatin structural changes in regulating human CYP3A ontogeny. Variability in drug metabolizing enzyme developmental trajectories contributes to inter-individual differences in susceptibility to chemical toxicity and adverse drug reactions, particularly in the first years of life. Factors linked to these inter-individual differences are largely unknown, but molecular mechanisms regulating ontogeny are likely involved. To evaluate chromatin structure dynamics as a likely contributing mechanism, age-dependent changes in modified and variant histone occupancy were evaluated within known CYP3A4 and 3A7 regulatory domains.

Results of research published in the Journal of Immunology [2] review how 'Moderate alcohol induces stress proteins HSF1 and hsp70 and inhibits pro-inflammatory cytokines resulting in endotoxin tolerance'. Researchers discuss how binge or moderate alcohol exposure impairs host defence and increases susceptibility to infection due to compromised innate immune responses. However there is a lack of consensus on the molecular mechanism by which alcohol mediates this immunosuppression. In this research paper by the Department of Medicine, University of Massachusetts Medical School it is shown that cellular stress proteins HSF1 and hsp70 play a mechanistic role in alcohol-mediated inhibition of the TLR4/MyD88 pathway.

A third paper, published in Biochim Biophys Acta [3], discusses the results of research by the Center for Molecular Medicine at Xiangya Hospital in China who were studying 'FOXM1 and androgen receptor co-regulate CDC6 gene transcription and DNA replication in prostate cancer cells' The focus of this research looked at CDC6 which is a key component of the DNA replication initiation machinery, and how its transcription is regulated by E2F or androgen receptor (AR) alone or in combination in prostate cancer (PCa) cells. Through both overexpression and knockdown approaches, the researchers found that in addition to its effects on the E2F pathway, the cell proliferation specific transcription factor FOXM1 stimulated CDC6 transcription in cooperation with AR. 

Launched worldwide in 2012 - Chromatrap® solid-state ChIP technology has been shown by a growing number of research groups worldwide to be more efficient than conventional bead-based methods. This is because the solid phase porous polymer, functionalized with either protein A or G, provides a greater surface area for chromatin antibody binding with very low non-specific binding. In addition, it uses a spin column approach, offering significant speed, process and carry-over advantages over sepharose or magnetic beads. DNA pull down with Chromatrap® is up to 25 times more than conventional methods, whilst the signal to noise ratio for DNA enrichment is 2 to 3 times better, even with low chromatin samples between 50ng to 3000ng per immunoprecipitation.


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