Evidence map›Paper›PMID 30744599›Full record

ArticleBMC cancer2019

Role of polycyclic aromatic hydrocarbons as a co-factor in human papillomavirus-mediated carcinogenesis.

Chuqing Zhang, Yunjing Luo, Rugang Zhong, Priscilla T Y Law, Siaw Shi Boon, Zigui Chen, Chi-Hang Wong, Paul K S Chan

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
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  9. Benzo[International journal of molecular sciences · 2022
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  12. An Assessment on Ethanol-Blended Gasoline/Diesel Fuels on Cancer Risk and Mortality.International journal of environmental research and public health · 2021
    Review
  13. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Chuqing ZhangDepartments of Microbiology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
Yunjing LuoBeijing Key Laboratory of Environment and Viral Oncology, Beijing University of Technology, Beijing, People's Republic of China.
Rugang ZhongBeijing Key Laboratory of Environment and Viral Oncology, Beijing University of Technology, Beijing, People's Republic of China.
Priscilla T Y LawDepartments of Microbiology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
Siaw Shi BoonDepartments of Microbiology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
Zigui ChenDepartments of Microbiology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
Chi-Hang WongDepartments of Clinical Oncology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong Special Administrative Region, People's Republic of China.
Paul K S ChanDepartments of Microbiology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong. paulkschan@cuhk.edu.hk.ORCID http://orcid.org/0000-0002-6360-4608
Chinese University of Hong Kong · HKBeijing University of Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHuman papillomavirus (HPV) is an etiological agent of cervical cancer. Yet co-factors are believed to be involved in HPV-mediated carcinogenesis. Polycyclic aromatic hydrocarbons (PAHs) are considered as one of these co-factors. Epidemiologic studies have associated high PAH exposure with increased risk for cancer development. To date, many studies focus on benzo[a]pyrene, however, the role of other PAHs should not be neglected. This study aimed to compare the potential of different PAHs as a co-factor in HPV-mediated carcinogenesis, and to investigate the possible mechanisms involved.

methodsThe effect of 17 PAHs on high-risk HPV (HPV16) were examined in this study. HPV16 E7 oncogene was expressed in primary cells extracted from baby rat kidney and treated with PAHs. The co-transforming ability of PAHs were measured by colony formation index according to the number and size of transformed colonies. Effects of PAHs on proliferation of HPV-null (C33A) and -infected (CaSki) were examined using CCK-8 assay. Wound healing assay and matrigel invasion chambers were used to investigate effects of PAHs on cell motility and invasivion of HPV-null (MCF7, C33A) and -infected (SiHa) cells.

resultsBenzo[a]pyrene (BaP), dibenz[a,h]anthracene (DBA) and indeno[1,2,3-cd]pyrene (IDP) showed the greatest co-transforming potential in the baby rat kidney cell system. Short-term exposure to BaP, DBA, IDP and pyrene (PR) did not affect proliferation of C33A or CaSki cells, however, long-term exposure of these four PAHs led to dramatic increase in growth rate of CaSki cells by 120-140%. Besides, exposure of PAHs has an effect on cell motility and invasiveness of C33A and SiHa cells, but not for MCF7 cells. Exposure of BaP and DBA enhanced migration (1.26 to 1.40-fold) and invasion (1.68 to 1.94-fold) capacity of C33A cells. Intriguingly, exposure of all four types of PAHs boosted the migration (1.12 to 1.28-fold) and invasion (1.26 to 1.40-fold) capacity of SiHa cells.

conclusionsOur results indicate that exposure to PAHs can be a key co-factor in HPV-related cancer development. They could act on all three stages, namely initiation, promotion and progression. Further study is needed to unveil the mechanisms by which PAHs interact with HPV to cause malignancy.

Indexed as

CocarcinogenesisPapillomaviridaeCell Line, TumorCell MovementCell ProliferationCell Transformation, NeoplasticCell Transformation, ViralHumansNeoplasmsPapillomavirus E7 ProteinsPapillomavirus InfectionsPolycyclic Aromatic Hydrocarbonsoncogene protein E7, Human papillomavirus type 16Papillomavirus E7 ProteinsPolycyclic Aromatic HydrocarbonsCancerCofactorsHuman papillomavirusPollutionPolycyclic aromatic hydrocarbons

Identifiers

PMID30744599
PMCPMC6371473
OpenAlexW2922336099

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.