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.

Charlie’s Bets on Age-Gating and 678 PMTA Assets as U.S. Vape Enforcement Landscape Shifts
Charlie’s Bets on Age-Gating and 678 PMTA Assets as U.S. Vape Enforcement Landscape Shifts
Charlie’s Holdings said in its latest shareholder letter that it is moving to commercialize PACHA products and monetize its PMTA assets as the FDA changes enforcement priorities for unauthorized ENDS products. Thirty PACHA SKUs were previously tentatively identified for a proposed public list of products that the FDA generally does not intend to prioritize for enforcement. Charlie’s is also preparing test-market sales of age-gated flavored disposables and says it currently holds 678 PMTA-related product assets while seeking additional strategic transactions and partnerships.
Sep.11
South Korea Imports 12,126 Kg of Nicotine Analogues From April to August After Bringing Synthetic Nicotine Under Tobacco Law
South Korea Imports 12,126 Kg of Nicotine Analogues From April to August After Bringing Synthetic Nicotine Under Tobacco Law
South Korea's liquid-vape market is showing changes across raw-material imports, product types and sales channels after synthetic nicotine came under the Tobacco Business Act on April 24. Customs data show nicotine-analogue imports totaled 12,126 kilograms from April through August, while synthetic-nicotine imports over the same five months totaled 231,663 kilograms, just 39.3% of the amount imported in March alone. Physical liquid-vape stores tracked in Seoul and Gyeonggi Province fell 9.9%, unmanned outlets edged higher and online sales listings increased from 27,774 to 42,437. Government testing of 105 liquid inhalation products promoted as nicotine-free separately found nicotine in 13 and 6-methylnicotine in 12.
Sep.22
PMI Expands U.S. ZYN Portfolio With New 1.5 mg and 8 mg Strengths, Moves Toward a Unified 20-Pouch-Per-Can Format
PMI Expands U.S. ZYN Portfolio With New 1.5 mg and 8 mg Strengths, Moves Toward a Unified 20-Pouch-Per-Can Format
Philip Morris International is expanding its U.S. ZYN nicotine pouch portfolio with new 1.5 mg and 8 mg strengths and plans to move its core 3 mg and 6 mg dry-pouch products from 15 to 20 pouches per can in the fourth quarter of 2026. ZYN ULTRA is also commercially available, with FDA authorization covering 10 products at 9 mg and one 11 mg Smooth product. PMI U.S. lists the new 1.5 mg and 8 mg strengths as commercially available, but as of September 10 they do not appear on the FDA’s public authorization list. Public materials do not identify which PMTA submissions cover the two new strengths or their current review status.
Sep.11
Germany's Four-Year Tobacco Tax Plan Heads to Parliament as BAT, JTI and PMI Push for Changes
Germany's Four-Year Tobacco Tax Plan Heads to Parliament as BAT, JTI and PMI Push for Changes
Germany's parliament is scheduled to hold a first reading of amendments to the Tobacco Tax Act on September 24. The government plans annual tax increases from 2027 through 2030 covering cigarettes, heated tobacco, vaping liquids and other categories. It expects the reform to generate €756 million in additional revenue in 2027, rising to €3.589 billion in additional annual revenue by 2030. Ahead of the parliamentary debate, the German Association of the Tobacco Industry and Novel Products, or BVTE, launched the "Tabaksteuer mit Augenmaß" campaign backed by BAT, JTI, Philip Morris, Reemtsma and wholesale and retail groups.
Sep.23
F1 Faces Renewed Pressure Over Tobacco and Nicotine Sponsorships as 67 Groups Target ZYN and VELO Ahead of Madrid Race
F1 Faces Renewed Pressure Over Tobacco and Nicotine Sponsorships as 67 Groups Target ZYN and VELO Ahead of Madrid Race
Ahead of the Formula 1 race in Madrid, 67 Spanish and international public-health, medical and consumer organizations have sent an open letter to F1 President and CEO Stefano Domenicali calling for an end to sponsorships linked to the tobacco and nicotine industry, including nicotine pouches, vaping products and heated tobacco. The letter focuses on Philip Morris International’s ZYN partnership with Ferrari and British American Tobacco’s long-running partnership with McLaren and exposure for VELO. The campaign follows a March letter in which more than 160 organizations worldwide made a similar request to Formula 1.
Sep.10
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