Evidence map›Paper›PMID 32071289›Full record

ArticleOncogenesis2020

PDK1 promotes ovarian cancer metastasis by modulating tumor-mesothelial adhesion, invasion, and angiogenesis via α5β1 integrin and JNK/IL-8 signaling.

Michelle K Y Siu, Yu-Xin Jiang, Jing-Jing Wang, Thomas H Y Leung, Siew Fei Ngu, Annie N Y Cheung, Hextan Y S Ngan, Karen K L Chan

Open access · goldAbstract read
In one paragraph

Article in Oncogenesis, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
3.8field-weighted citation impact, top 5% 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

45 citing papers in PubMed, 73 citations in OpenAlex.

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  19. Gastric cancer mesenchymal stem cells via the CXCR2/HK2/PD-L1 pathway mediate immunosuppression.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2023
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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 1 institution in 1 country.

Michelle K Y SiuDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Yu-Xin JiangDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Jing-Jing WangDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Thomas H Y LeungDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Siew Fei NguDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Annie N Y CheungDepartment of Pathology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Hextan Y S NganDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong.
Karen K L ChanDepartments of Obstetrics and Gynaecology, University of Hong Kong, Special Administrative Region of China, Hong Kong, Hong Kong. kklchan@hku.hk.
University of Hong Kong · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ovarian cancer is the most lethal gynecological malignancies owing to the lack of definitive symptoms until development of widespread metastases. Identification of novel prognostic and therapeutic targets is therefore an urgent need to improve survival. Here, we demonstrated high expression of the mitochondrial gatekeeping enzyme, pyruvate dehydrogenase kinase 1 (PDK1), in both clinical samples and cell lines of ovarian cancer. PDK1 expression was significantly associated with metastasis, reduced chemosensitivity, and poor overall and disease-free survival, and further highlighted as an independent prognostic factor. Silencing of PDK1 retarded lactate production, ovarian cancer cell adhesion, migration, invasion, and angiogenesis, and consequently metastasis, concomitant with decreased α5β1 integrin expression. Phospho-kinase array profiling and RNA sequencing analyses further revealed reduction of JNK activation and IL-8 expression in PDK1-depleted cells. Conversely, PDK1 overexpression promoted cell adhesion via modulation of α5β1 integrins, along with cell migration, invasion, and angiogenesis through activation of JNK/IL-8 signaling. PDK1 depletion additionally hindered tumor growth and dissemination in nude mice in vivo. Importantly, PDK1 levels were upregulated upon treatment with conditioned medium from omental tissues, which in turn promoted metastasis. Our findings suggest that PDK1, which is regulated by the tumor microenvironment, controls lactate production and promotes ovarian cancer cell metastasis via modulation of α5β1 integrin and JNK/IL-8 signaling. To our knowledge, this is the first report to demonstrate an association between PDK1 and survival in patients with ovarian cancer, supporting its efficacy as a valuable prognostic marker and therapeutic molecular target for the disease.

Identifiers

PMID32071289
PMCPMC7028730
OpenAlexW3007033255

What OpenQuestion holds

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Registered trials

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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.