Evidence map›Paper›PMID 26751081›Full record

ArticlePloS one2016

Inhibitory Activity of (+)-Usnic Acid against Non-Small Cell Lung Cancer Cell Motility.

Yi Yang, Thanh Thi Nguyen, Min-Hye Jeong, Florin Crişan, Young Hyun Yu, Hyung-Ho Ha, Kyung Hee Choi, Hye Gwang Jeong, Tae Cheon Jeong, Kwang Youl Lee and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
16.7field-weighted citation impact, top 1% 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

33 citing papers in PubMed, 70 citations in OpenAlex.

  1. Article
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  4. Hepatotoxicity of usnic acid and underlying mechanisms.Journal of environmental science and health. Part C, Toxicology and carcinogenesis · 2025
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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

13 authors at 6 institutions in 3 countries.

Yi YangKorean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.
Thanh Thi NguyenKorean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.
Min-Hye JeongKorean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.
Florin CrişanDepartment of Taxonomy and Ecology, Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, Romania.
Young Hyun YuCollege of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
Hyung-Ho HaCollege of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
Kyung Hee ChoiCollege of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
Hye Gwang JeongCollege of Pharmacy, Chungnam National University, Daejeon, Republic of Korea.
Tae Cheon JeongCollege of Pharmacy, Yeungnam University, Gyeongsan, Korea.
Kwang Youl LeeCollege of Pharmacy, Chonnam National University, Gwangju, Korea.
Kyung Keun KimMedical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea.
Jae-Seoun HurKorean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.
Hangun KimCollege of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
Sunchon National University · KRChonnam National University · KRBabeș-Bolyai University · ROChungnam National University · KRThai Nguyen University · VNYeungnam University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lichens are symbiotic organisms that produce various unique chemicals that can be used for pharmaceutical purposes. With the aim of screening new anti-cancer agents that inhibit cancer cell motility, we tested the inhibitory activity of seven lichen species collected from the Romanian Carpathian Mountains against migration and invasion of human lung cancer cells and further investigated the molecular mechanisms underlying their anti-metastatic activity. Among them, Alectoria samentosa, Flavocetraria nivalis, Alectoria ochroleuca, and Usnea florida showed significant inhibitory activity against motility of human lung cancer cells. HPLC results showed that usnic acid is the main compound in these lichens, and (+)-usnic acid showed similar inhibitory activity that crude extract have. Mechanistically, β-catenin-mediated TOPFLASH activity and KITENIN-mediated AP-1 activity were decreased by (+)-usnic acid treatment in a dose-dependent manner. The quantitative real-time PCR data showed that (+)-usnic acid decreased the mRNA level of CD44, Cyclin D1 and c-myc, which are the downstream target genes of both β-catenin/LEF and c-jun/AP-1. Also, Rac1 and RhoA activities were decreased by treatment with (+)-usnic acid. Interestingly, higher inhibitory activity for cell invasion was observed when cells were treated with (+)-usnic acid and cetuximab. These results implied that (+)-usnic acid might have potential activity in inhibition of cancer cell metastasis, and (+)-usnic acid could be used for anti-cancer therapy with a distinct mechanisms of action.

Indexed as

Antineoplastic AgentsBenzofuransCarcinoma, Non-Small-Cell LungCell Line, TumorCell MovementChromatography, High Pressure LiquidChromatography, LiquidDose-Response Relationship, DrugDrug Screening Assays, AntitumorHEK293 CellsHumansInhibitory Concentration 50LichensLung NeoplasmsMass SpectrometryNeoplasm InvasivenessAntineoplastic AgentsBenzofuransusnic acid

Identifiers

PMID26751081
PMCPMC4708991
OpenAlexW2240086881

What OpenQuestion holds

Textmetadata
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.