Nav: Home

New study compares the effects of direct exposure to cigarette smoke or e-cigarette vapor

February 06, 2017

New Rochelle, NY, February 1, 2017--Researchers reported changes in the expression levels of 123 genes when reconstituted lung tissue was exposed to cigarette smoke, compared to only two genes that could be confirmed following exposure to e-cigarette aerosols. They also reported increased levels of several cytokines, which are biomarkers of inflammation, in the lung tissue model exposed to conventional cigarette smoke, as described in the study published in Applied In Vitro Toxicology, a peer-reviewed publication from Mary Ann Liebert, Inc., publishers. The article is part of a special issue on Next Generation Nicotine Products and is available to media contacts upon request.

Anisha Banerjee and coauthors from British American Tobacco R&D Centre (Southampton, U.K.) used a commercially available 3D airway culture system comprised of reconstituted human epithelium, which mimics the structure and functions of human lung tissue. The researchers demonstrate how this model system, together with a protocol designed to deliver matched, repeated exposures to smoke or aerosol over a short period, can be applied in the laboratory to assess potential toxicity.

In the article entitled "Differential Gene Expression Using RNA-seq Profiling in a Reconstituted Airway Epithelium Exposed to Conventional Cigarette Smoke or Electronic Cigarette Aerosols," they describe the molecular techniques used to measure gene expression and inflammatory biomarker levels.

"Next generation sequencing is revolutionizing and expanding the frontiers of genomic research to unravel the genetic information from any biological system," explains Dr. Banerjee.

"The utilization of new human 3D lung models in combination with the latest gene expression technologies to evaluate the effects of conventional cigarette smoke versus electronic cigarette aerosols demonstrates how in vitro models can be used to understand biological effects," says Jim McKim, PhD, Editor-in-Chief of Applied In Vitro Toxicology and Founder and CEO, IonTox, LLC.
-end-
About the Journal

Applied In Vitro Toxicology provides the latest peer-reviewed research on the application of alternative in vitro testing methods for predicting adverse effects in the pharmaceutical, chemical, and personal care industries. Led by Editor-in-Chief James M. McKim, PhD, DABT, Founder and CEO, IonTox, LLC, the Journal addresses important issues facing these diverse industries, including regulatory requirements; the reduction, refinement, and replacement of animal testing; new screening methods; evaluation of new cell and tissue models; and the most appropriate methods for assessing safety and satisfying regulatory demands. The Journal is published quarterly online with Open Access options and in print. Complete tables of content and a sample issue may be viewed on the Applied In Vitro Toxicology website.

Mary Ann Liebert, Inc./Genetic Engineering News

Related Genes Articles:

Insomnia genes found
An international team of researchers has found, for the first time, seven risk genes for insomnia.
Genes affecting our communication skills relate to genes for psychiatric disorder
By screening thousands of individuals, an international team led by researchers of the Max Planck Institute for Psycholinguistics, the University of Bristol, the Broad Institute and the iPSYCH consortium has provided new insights into the relationship between genes that confer risk for autism or schizophrenia and genes that influence our ability to communicate during the course of development.
The fate of Neanderthal genes
The Neanderthals disappeared about 30,000 years ago, but little pieces of them live on in the form of DNA sequences scattered through the modern human genome.
Face shape is in the genes
Many of the characteristics that make up a person's face, such as nose size and face width, stem from specific genetic variations, reports John Shaffer of the University of Pittsburgh in Pennsylvania, and colleagues, in a study published on Aug.
Study finds hundreds of genes and genetic codes that regulate genes tied to alcoholism
Using rats carefully bred to either drink large amounts of alcohol or to spurn it, researchers at Indiana and Purdue universities have identified hundreds of genes that appear to play a role in increasing the desire to drink alcohol.
Reading between the genes
For a long time dismissed as 'junk DNA,' we now know that also the regions between the genes fulfill vital functions.
The silence of the genes
Research led by Dr. Keiji Tanimoto from the University of Tsukuba, Japan, has brought us closer to understanding the mechanisms underlying the phenomenon of genomic imprinting.
Why some genes are highly expressed
The DNA in our cells is folded into millions of small packets, like beads on a string, allowing our two-meter linear DNA genomes to fit into a nucleus of only about 0.01 mm in diameter.
Activating genes on demand
A new approach developed by Harvard geneticist George Church, Ph.D., can help uncover how tandem gene circuits dictate life processes, such as the healthy development of tissue or the triggering of a particular disease, and can also be used for directing precision stem cell differentiation for regenerative medicine and growing organ transplants.
Controlling genes with light
Researchers at Duke University have demonstrated a new way to activate genes with light, allowing precisely controlled and targeted genetic studies and applications.

Related Genes Reading:

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Moving Forward
When the life you've built slips out of your grasp, you're often told it's best to move on. But is that true? Instead of forgetting the past, TED speakers describe how we can move forward with it. Guests include writers Nora McInerny and Suleika Jaouad, and human rights advocate Lindy Lou Isonhood.
Now Playing: Science for the People

#527 Honey I CRISPR'd the Kids
This week we're coming to you from Awesome Con in Washington, D.C. There, host Bethany Brookshire led a panel of three amazing guests to talk about the promise and perils of CRISPR, and what happens now that CRISPR babies have (maybe?) been born. Featuring science writer Tina Saey, molecular biologist Anne Simon, and bioethicist Alan Regenberg. A Nobel Prize winner argues banning CRISPR babies won’t work Geneticists push for a 5-year global ban on gene-edited babies A CRISPR spin-off causes unintended typos in DNA News of the first gene-edited babies ignited a firestorm The researcher who created CRISPR twins defends...