E-cigarettes Show Lower Cell Toxicity Than Traditional Cigarettes

Nov.18.2022
E-cigarettes Show Lower Cell Toxicity Than Traditional Cigarettes
The study found that e-cigarettes have less impact on cells than traditional cigarettes, using extracellular vesicle proteomics for analysis.

On November 5th, a research team led by Associate Researcher Yu Suhong from Fuzhou University published a paper in the authoritative global toxicology journal, "Toxicology in Vitro," which found that the impact of electronic cigarettes on cells is significantly lower than that of traditional cigarettes.


The study used exosome proteomics for the first time to compare the effects of electronic cigarettes and traditional cigarettes on human bronchial epithelial cells. Exosomes are small membrane vesicles containing complex RNA and proteins, which can be used as biomarkers for early diagnosis and prognosis evaluation of diseases such as cancer.


Research data shows that cigarette tar leads to more differences in protein expression of extracellular vesicles within cells, and these are significantly enriched in cancer signaling pathways. Meanwhile, differences caused by e-cigarettes are less pronounced. Toxicology studies have also found that cigarette tar significantly inhibits cell activity, while e-cigarette tar did not produce similar negative effects, indicating that the cellular toxicity of e-cigarettes is relatively low.


The paper was published in the toxicology SCI journal, "In Vivo Toxicology.


In recent years, several studies have found that electronic cigarettes may be a form of harm reduction product.


In 2021, the Pennsylvania State University College of Medicine published a paper in Cancer stating that e-cigarettes could be effective tools for quitting smoking and also decrease the production of carcinogens in smokers' lungs. In 2022, an editorial in Nature suggested that for patients with gum health concerns, e-cigarettes may be a safer nicotine substitute and could reduce the risk of oral cancer.


According to Associate Researcher Yu Suhong, this study is the first to systematically analyze the safety of cigarettes and e-cigarettes starting from extracellular vesicles, filling a gap in the relevant field.


According to research findings, electronic cigarettes are less harmful than traditional cigarettes and may be a reduced-harm product," said Yu Suhong. However, electronic cigarettes are not entirely safe and should not be used by non-smokers.



Disclaimer

This article is provided solely for professional research, industry discussion, and informational purposes. Any references to brands, companies, products, technologies, or policies are made for factual reporting and analytical purposes only, and do not constitute endorsement, recommendation, promotion, or advertising by 2Firsts.

Nicotine-containing products, including but not limited to cigarettes, e-cigarettes, heated tobacco products, and nicotine pouches, carry significant health risks. Readers are responsible for complying with all applicable laws and regulations in their respective jurisdictions, including age restrictions and access limitations.

The information contained in this article should not be regarded as investment, legal, medical, regulatory, or commercial advice. While 2Firsts strives to ensure the accuracy and reliability of its content, it does not assume liability for any direct or indirect loss arising from errors, omissions, inaccuracies, or reliance on the information contained herein.

This article is not intended for individuals below the legal age for accessing tobacco or nicotine-related information in their jurisdiction.

 

Copyright Notice

This article is either original content produced by 2Firsts or content reproduced, translated, summarized, or adapted from third-party sources with attribution where applicable. The intellectual property rights of the original content remain with 2Firsts or the respective original rights holders.

No individual or organization may copy, reproduce, distribute, republish, modify, translate, or otherwise use this content without prior authorization. Any unauthorized use may result in legal action.

For copyright-related inquiries, corrections, or removal requests, please contact: info@2firsts.com.

 

AI-Assisted Translation and Editing Notice

Portions of this article may have been translated, edited, or reviewed with the assistance of artificial intelligence tools to improve efficiency and readability. Due to the limitations of AI-assisted translation and editing, discrepancies, omissions, or inaccuracies may exist when compared with the original source.

Where applicable, readers are advised to refer to the original source for the most complete and accurate information. If you identify any errors or believe that any content infringes upon your rights, please contact us at info@2firsts.com, and we will review and address the matter promptly.

JAMA Study: U.S. Vape Directories Fail to Sustainably Curb Unlisted Sales as Product Shifts May Redistribute Brand Share 2Firsts Recommended
JAMA Study: U.S. Vape Directories Fail to Sustainably Curb Unlisted Sales as Product Shifts May Redistribute Brand Share 2Firsts Recommended
A study by CDC Foundation researchers found no sustained decline in e-cigarette sales across Alabama, Oklahoma and Louisiana, the first three U.S. states to implement e-cigarette directory laws. Louisiana initially saw a significant sales decline, followed by a rebound and a persistent reduction in product availability. Sales also shifted from nontobacco-flavored disposables toward prefilled cartridges, with Vuse Alto driving much of the increase in menthol cartridges. By April 2025, unlisted products still accounted for more than half of e-cigarette nicotine sales in all three states.
Sep.18
Special Report | Can Nicotine Be Replaced? 6-MN Is Already on the Market While Key Human Evidence Is Still Missing
Special Report | Can Nicotine Be Replaced? 6-MN Is Already on the Market While Key Human Evidence Is Still Missing
Nicotine analogues such as 6-methylnicotine are already appearing in e-cigarettes and oral pouches, even as key human evidence remains limited. A new Nixodine-S study adds nonclinical data showing differences from nicotine in cytotoxicity and receptor activity, while independent studies point to a more complex toxicological picture. With supply-chain activity growing and FDA seeking clearer authority over nicotine analogues, the industry now faces a larger question: what evidence is needed before these substances can credibly replace nicotine?
SCIENCE
Sep.23
UK HMRC Launches Vape Duty Stamps on October 1, Ushering in Supply-Chain Traceability as Chinese Exporters Face New Compliance Hurdles
UK HMRC Launches Vape Duty Stamps on October 1, Ushering in Supply-Chain Traceability as Chinese Exporters Face New Compliance Hurdles
HM Revenue & Customs put the UK's Vaping Products Duty and Vaping Duty Stamps Scheme into effect on October 1. All vaping liquids manufactured in or imported into the UK are now subject to duty at £2.20 per 10ml, regardless of nicotine content. The stamp regime will introduce digital functionality designed to provide traceability throughout the supply chain, with approved manufacturers, importers and warehousekeepers required to report product movements and retailers and consumers eventually able to scan stamps to verify authenticity. China exported $177 million of vape-related products to the UK in August, up 51.4% year over year, increasing the significance of the new compliance regime for China's Shenzhen-centered vape supply chain.
Regulations
Oct.04
Australia Extends Illicit Tobacco Crackdown From Tougher Penalties to Customs and Logistics Supply Chains
Australia Extends Illicit Tobacco Crackdown From Tougher Penalties to Customs and Logistics Supply Chains
Australia's federal government introduced a new illicit tobacco enforcement bill on September 10 that would strengthen evidentiary presumptions, representative sampling, seizure and forfeiture procedures, proceeds-of-crime powers and obligations for customs and logistics operators. The proposal follows the Combatting Illicit Tobacco Act 2026, which took effect in August and increased penalties while expanding investigative and asset-recovery tools. Together, the reforms extend Australia's crackdown from tougher criminal sanctions into import, logistics and evidentiary enforcement.
Sep.14
Trump Names Darrell Scott as CDC Tobacco Health Adviser, Citing Tobacco Risks and Harm-Reduction Solutions
Trump Names Darrell Scott as CDC Tobacco Health Adviser, Citing Tobacco Risks and Harm-Reduction Solutions
U.S. President Donald Trump has named Pastor Darrell Scott to serve as an adviser on tobacco health issues on the Centers for Disease Control and Prevention’s Advisory Committee to the Director. Trump said Scott would focus on the burden of tobacco-related disease and help examine ways to protect Americans from dangerous tobacco products while supporting solutions that reduce harm. Scott’s public career has largely centered on faith leadership, community advocacy and politics.
Sep.02
FDA Revises Import Alert 98-07 Rules, Bringing May Enforcement Priorities Into Unauthorized ENDS Detentions
FDA Revises Import Alert 98-07 Rules, Bringing May Enforcement Priorities Into Unauthorized ENDS Detentions
The U.S. Food and Drug Administration has revised the rules under Import Alert 98-07 to incorporate its May 2026 enforcement-priority policy for certain electronic nicotine delivery systems marketed without premarket authorization. The alert continues to allow detention without physical examination, or DWPE, for ENDS lacking required marketing authorization, while directing field divisions to apply the May risk-based framework. When necessary, detention or refusal decisions must also undergo review by the FDA's Center for Tobacco Products. Products including PACHA and Vuse Pro have already emerged as industry examples of the May policy, although enforcement discretion does not constitute FDA marketing authorization.
News
Sep.28 by 2Firsts Perspectives