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.

Zhang Xiaotang Appointed Deputy Director of China’s Tobacco Regulator, Adding Another Finance-Background Official to Top Leadership
Zhang Xiaotang Appointed Deputy Director of China’s Tobacco Regulator, Adding Another Finance-Background Official to Top Leadership
China’s State Council has appointed Zhang Xiaotang as deputy director of the State Tobacco Monopoly Administration, with the regulator’s official website now listing him as a Party leadership group member and deputy director. Zhang previously led Hebei China Tobacco and earlier headed the STMA’s finance and audit department. His appointment follows the elevation earlier this year of former tax official Yao Laiying to head the STMA, adding another senior official with a strong fiscal or financial-management background to China Tobacco’s top leadership in 2026.
News
Sep.20
Pennsylvania Lists 163 Vape Products Eligible for Sale, Including Vuse and JUUL; Previously Pending Chinese Brands Such as OXBAR Remain Absent, While Unlisted Products Including Geek Bar Face Enforcement From October 19
Pennsylvania Lists 163 Vape Products Eligible for Sale, Including Vuse and JUUL; Previously Pending Chinese Brands Such as OXBAR Remain Absent, While Unlisted Products Including Geek Bar Face Enforcement From October 19
Pennsylvania begins enforcing its electronic nicotine delivery system (ENDS) directory restrictions on October 19, 2026. The October 18 directory contained 163 product records from seven manufacturers, including Vuse, JUUL, NJOY, Logic and Naked 100. Geek Bar, RAZ and Lost Mary were absent. BAT, Altria, Japan Tobacco and JUUL collectively accounted for 112 records, or 68.7%, while Imperial Brands' blu had no listings. The directory included 15 disposable vape records, 40 bottled e-liquids and 10 products labeled 0mg, but no open-system refillable devices. Twenty-two manufacturer certifications remained under review. Four Logic models corresponding to Smoore's pending records were listed under the brand owner, while LYCO, OXBAR and Boulder/Rock had no approved directory entries.
Regulations
Oct.19
PMI CEO Attends Opening of IQOS Global Flagship in Tokyo’s Ginza as 1,814 Limited ILUMA i PRIME Sets Launch
PMI CEO Attends Opening of IQOS Global Flagship in Tokyo’s Ginza as 1,814 Limited ILUMA i PRIME Sets Launch
IQOS opened its first global flagship, IQOS Flagship Ginza, in Tokyo on September 4, 2026, replacing the former IQOS Store Ginza after nearly a decade of operation. The new location expands conventional product retail into member lounges, digital experiences, art installations and brand programming. IQOS also launched a Ginza-exclusive IQOS ILUMA i PRIME set limited to 1,814 individually numbered units, priced at JPY11,980, or about US$77. PMI Sales Strategy Consultant Yuji M. later said on LinkedIn that more than 500 people had lined up from the night before the opening.
Sep.07
BAT Adds Former Apple General Counsel Bruce Sewell to Board as Finance, Legal, Marketing and Regional Leadership Shift
BAT Adds Former Apple General Counsel Bruce Sewell to Board as Finance, Legal, Marketing and Regional Leadership Shift
British American Tobacco has appointed former Apple Senior Vice President, General Counsel and Secretary Bruce Sewell as an independent non-executive director, effective January 1, 2027. He will also join BAT's Audit and Nominations Committees. BAT Chair Luc Jobin highlighted Sewell's experience in technology, government and regulatory affairs, public-company governance and AI-company boards. Over the past 18 months, BAT has changed or announced changes to its CFO, general counsel, CMO and APMEA regional leadership, while the main board has also seen multiple changes. The appointment comes as BAT advances Horizon 2030 and its Fit2Win transformation while expanding New Categories and reshaping parts of its digital, technology and operating structure.
Business
Oct.29
Elf Bar Vape Explosion and Amputation Claim Spurs Coverage Suit, U.S. Insurer MUSIC Seeks Ruling It Owes No Duty to Defend or Indemnify Distributor i5
Elf Bar Vape Explosion and Amputation Claim Spurs Coverage Suit, U.S. Insurer MUSIC Seeks Ruling It Owes No Duty to Defend or Indemnify Distributor i5
Mesa Underwriters Specialty Insurance Company has asked a federal court in Washington to declare that it has no duty to defend or indemnify vape distributor i5 Distribution in a product liability case involving an Elf Bar BC5000. The plaintiff alleges that the disposable vape caught fire and exploded in his pocket, causing severe burns and ultimately requiring an above-the-knee amputation of his left leg. MUSIC is relying on a tobacco, nicotine or nicotine replacement products exclusion and a premises limitation endorsement. The court has not ruled on the coverage dispute.
News
Sep.10
Product | SMOORE's VAPORESSO Introduces VAST Refillable Vape With Three Resistances in One Pod
Product | SMOORE's VAPORESSO Introduces VAST Refillable Vape With Three Resistances in One Pod
SMOORE-owned vaping brand VAPORESSO introduced the VAST refillable open-system vape in October 2026, featuring Tri-Core Mesh technology that integrates three resistance configurations—0.8Ω, 0.6Ω and 0.4Ω—within a single pod. The device supports different operating modes and e-liquid types. The standard version features a 10mL pod, while a TPD-labelled configuration combines a 2mL pod with an 8mL refill container. The device has a 1,600mAh battery and a maximum output of 30W. VAPORESSO claims up to six pod refills and a tested coil lifespan of up to 150,000 puffs. The UK's MHRA published a related device notification on October 12. The official MSRP is $25.90, compared with a $35.90 listing on VAPORESSO's direct store.
product
Oct.30