Hypothetical two-step initiation of experimental carcinogenesis by polycyclic aromatic hydrocarbons and aminoazo dyes.

Open Biochem J

Beuth Hochschule für Technik Berlin; Fachbereich II; Pharma- und Chemietechnik Luxemburger Str. 10; 13353 Berlin, Germany.

Published: August 2012

A new hypothesis is discussed, which describes the initiation of the carcinogenesis through polycyclic aromatic hydrocarbons (PAHs) and aminoazo dyes (AZOs) as a two-step process: the oncogenic proteins of the ras or ras-like on-cogenes activated by mutation ("initiation A ") co-operate with the complexes in the plasma membrane formed during the "initiation B " stage from the parent compounds of the PAHs or AZOs with cholesterol and apolipoprotein A-I. The final result of this co-operation, or the "complete initiation", is an irreversibly modified membrane architecture with negative consequences for growth control.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3349946PMC
http://dx.doi.org/10.2174/1874091X01206010040DOI Listing

Publication Analysis

Top Keywords

carcinogenesis polycyclic
8
polycyclic aromatic
8
aromatic hydrocarbons
8
aminoazo dyes
8
hypothetical two-step
4
two-step initiation
4
initiation experimental
4
experimental carcinogenesis
4
hydrocarbons aminoazo
4
dyes hypothesis
4

Similar Publications

KCNJ15 inhibits chemical-induced lung carcinogenesis and progression through GNB1 mediated Hippo pathway.

Toxicology

December 2024

Department of Environmental Health, College of Preventive Medicine, Third Military Medical University (Army Medical University), Chongqing 400038, China; Institute of Toxicology, College of Preventive Medicine, Third Military Medical University (Army Medical University), Chongqing 400038, China. Electronic address:

Polycyclic aromatic hydrocarbons (PAHs) are important environmental carcinogens that can cause lung cancer. However, the underlying epigenetic mechanism during PAHs-induced lung carcinogenesis has remained largely unknown. Previously, we screened some novel epigenetic regulatory genes during 3-methylcholanthrene (3-MCA)-induced lung carcinogenesis, including the potassium inwardly rectifying channel subfamily J member 15 (KCNJ15) gene.

View Article and Find Full Text PDF

Genome-modified Caenorhabditis elegans expressing the human cytochrome P450 (CYP1A1 and CYP1A2) pathway: An experimental model for environmental carcinogenesis and pharmacological research.

Environ Int

December 2024

Department of Analytical, Environmental and Forensic Sciences, School of Cancer & Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK. Electronic address:

Article Synopsis
  • Polycyclic aromatic hydrocarbons (PAHs), like benzo[a]pyrene (BaP), arise from incomplete combustion and are found in sources like tobacco smoke and charbroiled food, posing cancer risks.
  • Researchers genetically modified the nematode Caenorhabditis elegans to include human CYP1A1, CYP1A2, and epoxide hydrolase to study the effects of BaP exposure, observing changes in behavior and reproductive performance, such as increased pharyngeal pumping and decreased brood size.
  • The findings revealed that the humanized worms experienced more severe reproductive toxicity and genetic mutations when exposed to BaP, highlighting the potential of these modified organisms for improving research practices while working towards the
View Article and Find Full Text PDF

E-waste in the environment: Unveiling the sources, carcinogenic links, and sustainable management strategies.

Toxicology

December 2024

Toxicology Research Laboratory, Department of Animal Science, Kazi Nazrul University, Asansol, West Bengal, India. Electronic address:

Article Synopsis
  • * Improper disposal of e-waste poses significant health risks and environmental hazards, as it contains harmful substances like heavy metals and organic pollutants that can contaminate soil and water, leading to human exposure and potential cancer risks.
  • * The review emphasizes the need for effective e-waste management strategies, including proper recycling and disposal methods, to mitigate its environmental impact and discusses treatment approaches to reduce contamination.
View Article and Find Full Text PDF

The collapse of the World Trade Center (WTC) buildings in New York City generated a large plume of dust and smoke. WTC dust contained human carcinogens including metals, asbestos, polycyclic aromatic hydrocarbons (PAHs), persistent organic pollutants (POPs, including polychlorinated biphenyls (PCBs) and dioxins), and benzene. Excess levels of many of these carcinogens have been detected in biological samples of WTC-exposed persons, for whom cancer risk is elevated.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers previously found that benzo[a]pyrene (B[a]P), a carcinogen in tobacco smoke, caused significantly more DNA damage in smokers' buccal cells compared to non-smokers, indicating a link to oral squamous cell carcinoma (OSCC).
  • A Phase 0 clinical study involving 27 smokers tested the effects of black raspberry (BRB) lozenges on reducing B[a]P-induced DNA damage over an 8-week period.
  • Results showed a significant reduction in DNA damage at various points during and after BRB administration, suggesting its potential as a chemopreventive agent against tobacco-related OSCC.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!