Evidence map›Paper›PMID 34118979›Full record

ArticleJournal of hematology & oncology2021

The relationship between expression of PD-L1 and HIF-1α in glioma cells under hypoxia.

Xing-Chen Ding, Liang-Liang Wang, Xue-Dong Zhang, Jun-Long Xu, Pei-Feng Li, Hua Liang, Xian-Bin Zhang, Li Xie, Zi-Han Zhou, Jia Yang and 3 more

Open access · goldAbstract readLetter
In one paragraph

Article in Journal of hematology & oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 153 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
153citing papers in PubMed, 1 pooled it
12.8field-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

153 citing papers in PubMed, 1 synthesis or guideline pooled it, 229 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Nerve growth factor receptor (NGFR): A key player in glioblastoma progression.Biochimica et biophysica acta. Reviews on cancer · 2026
    Review
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  20. Variability of the Immunosuppressive Properties of Glioma Cell Lines.Bulletin of experimental biology and medicine · 2026
    Article

93 more citing papers are in PubMed but not listed here.

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 2 countries.

Xing-Chen Ding *Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 440 Ji Yan Road, Jinan, Shandong, China.
Liang-Liang Wang *Department of Radiation and Cellular Oncology, Ludwig Center for Metastasis Research, The University of Chicago, Chicago, IL, 60637, USA.
Xue-Dong ZhangDepartment of Pathology, Liaocheng Hospital of China, Liaocheng, Shandong, China.
Jun-Long XuDepartment of Pathology, Liaocheng Hospital of China, Liaocheng, Shandong, China.
Pei-Feng LiDepartment of Pathology, The 960Th Hospital of PLA, Jinan, Shandong, China.
Hua LiangDepartment of Radiation and Cellular Oncology, Ludwig Center for Metastasis Research, The University of Chicago, Chicago, IL, 60637, USA.
Xian-Bin ZhangDepartment of General Surgery, Shenzhen University General Hospital & Carson International Cancer Research Centre, Shenzhen, China.
Li XieDepartment of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 440 Ji Yan Road, Jinan, Shandong, China.
Zi-Han ZhouDepartment of Oncology, Weifang Medical University, Weifang, Shandong, China.
Jia YangDepartment of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 440 Ji Yan Road, Jinan, Shandong, China.
Ralph R WeichselbaumDepartment of Radiation and Cellular Oncology, Ludwig Center for Metastasis Research, The University of Chicago, Chicago, IL, 60637, USA. rrw@radonc.uchicago.edu.
Jin-Ming YuDepartment of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 440 Ji Yan Road, Jinan, Shandong, China. sdyujinming@163.com.
Man HuDepartment of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 440 Ji Yan Road, Jinan, Shandong, China. human5770@163.com.
Liaocheng People's Hospital · CNShandong Tumor Hospital · CNUniversity of Chicago · USShandong First Medical University · CN82th Hospital of Pla · CNWeifang Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypoxia inducible factor-1α (HIF-1α) up-regulates the expression of programmed death ligand-1 (PD-L1) in some extracranial malignancies. However, whether it could increase PD-L1 expression in intracranial tumor is still unknown. Here, we explored the relationship between HIF-1α and PD-L1 expression in glioma, and investigated their clinical significance. In glioma patients, HIF-1α and PD-L1 were overexpressed in high grade glioma tissues and were significantly associated with poor survival. In glioma cells, PD-L1 expression was induced under hypoxia condition, and the enhanced PD-L1 expression was abrogated by either HIF-1α knock-down or HIF-1α inhibitor treatment. Furthermore, ChIP-qPCR analysis showed the direct binding of HIF-1α to PD-L1 proximal promoter region, providing evidence that HIF-1α up-regulates PD-L1 in glioma. In glioma murine model, the combination treatment with HIF-1α inhibitor and anti-PD-L1 antibody caused a more pronounced suppressive effect on tumor growth compared to either monotherapy. Immunologically, the combination treatment improved both dendritic cell (DC) and CD8

Indexed as

Tumor HypoxiaB7-H1 AntigenCell Line, TumorGene Expression Regulation, NeoplasticGliomaHumansHypoxia-Inducible Factor 1, alpha SubunitTumor MicroenvironmentB7-H1 AntigenCD274 protein, humanHIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitGliomaHIF-1 αHypoxiaImmunotherapyPD-L1

Identifiers

PMID34118979
PMCPMC8199387
OpenAlexW3170896113

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.