Evidence map›Paper›PMID 26044161›Full record

ArticleCancer research and treatment2016

The Effect of Chemoradiotherapy with SRC Tyrosine Kinase Inhibitor, PP2 and Temozolomide on Malignant Glioma Cells In Vitro and In Vivo.

Keun-Yong Eom, Bong Jun Cho, Eun Jung Choi, Jin-Ho Kim, Eui Kyu Chie, Hong-Gyun Wu, Il Han Kim, Sun Ha Paek, Jae-Sung Kim, In Ah Kim

Open access · hybridAbstract read
In one paragraph

Article in Cancer research and treatment, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 31 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

Keun-Yong EomDepartment of Radiation Oncology, Seoul National University, Graduate School of Medicine, Seoul, Korea.
Bong Jun ChoDepartment of Radiation Oncology, Seoul National University, Graduate School of Medicine, Seoul, Korea.
Eun Jung ChoiDepartment of Radiation Oncology, Seoul National University, Graduate School of Medicine, Seoul, Korea.
Jin-Ho KimDepartment of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
Eui Kyu ChieDepartment of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
Hong-Gyun WuDepartment of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
Il Han KimDepartment of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
Sun Ha PaekDepartment of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea.
Jae-Sung KimDepartment of Radiation Oncology, Seoul National University, Graduate School of Medicine, Seoul, Korea.
In Ah KimDepartment of Radiation Oncology, Seoul National University, Graduate School of Medicine, Seoul, Korea.
Seoul National University · KRSeoul National University Bundang Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe investigated the effect of chemoradiotherapy with PP2 and temozolomide (TMZ) on malignant glioma cells using clonogenic assays and in vivo brain tumor model. MATERIALS AND

methodsThe effect of PP2 on radiosensitivity of U251 and T98G cells was investigated using clonogenic assays. The expression of E-cadherin, matrix metalloproteinases 2 (MMP2), Ephrin type-A receptor 2 (EphA2), and vascular endothelial growth factor (VEGF) was measured by Western blotting and an accumulation of γH2AX foci 6 hours after radiotherapy was measured after PP2 treatment. The effect of PP2 on migration, invasion, and vasculogenic mimicry formation (VMF) of U251 cells was evaluated. In an orthotopical brain tumor model with U251 cells, PP2 was injected intraperitoneally with or without oral TMZ before, during and after whole brain radiotherapy. Bioluminescence images were taken to visualize in vivo tumors and immunohistochemical staining of VEGF, CD31, EphA2, and hypoxia-inducible factor 1a was performed.

resultsPP2 increased radiosensitivity of U251 and T98G cells without decreasing survival of normal human astrocytes. Chemoradiotherapy with PP2 and TMZ resulted in increased accumulation of γH2AX foci. PP2 induced overexpression of E-cadherin and suppression of MMP2, VEGF, and EphA2. PP2 also compromised invasion, migration, and VMF of U251 cells. In brain tumors, chemoradiotherapy with PP2 and TMZ decreased tumor volume best, but not statistically significantly compared with chemoradiotherapy with TMZ. The expression of VEGF and CD31 was suppressed in PP2-treated tumors.

conclusionPP2 enhances radiosensitivity of malignant glioma cells and suppresses invasion and migration of U251 cells. Chemoradiotherapy with PP2 and TMZ resulted in non-significant tumor volume decrease.

Indexed as

Antineoplastic Agents, AlkylatingCell Line, TumorChemoradiotherapyDacarbazineGliomaHumansProtein Kinase Inhibitorssrc-Family KinasesTemozolomideAntineoplastic Agents, AlkylatingDacarbazineProtein Kinase Inhibitorssrc-Family KinasesTemozolomideGlioblastomaPP2RadiotherapySRC tyrosine kinase inhibitorTemozolomide

Identifiers

PMID26044161
PMCPMC4843743
OpenAlexW1504053030

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.