Evidence map›Paper›PMID 33566445›Full record

ArticleClinical and translational science2021

Quantitative protein expression of blood-brain barrier transporters in the vasculature of brain metastases of patients with lung and breast cancer.

Xun Bao, Jianmei Wu, Jun Jiang, An-Chi Tien, Nader Sanai, Jing Li

Open access · goldAbstract read
In one paragraph

Article in Clinical and translational science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.1field-weighted citation impact, top 26% 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

15 citing papers in PubMed, 22 citations in OpenAlex.

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  14. The blood-tumour barrier in cancer biology and therapy.Nature reviews. Clinical oncology · 2021
    Review
  15. Article
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

6 authors at 3 institutions in 1 country.

Xun BaoKarmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA.
Jianmei WuKarmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA.
Jun JiangKarmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA.
An-Chi TienBarrow Neurological Institute, St. Joseph's Hospital & Medical Center, Phoenix, Arizona, USA.
Nader SanaiBarrow Neurological Institute, St. Joseph's Hospital & Medical Center, Phoenix, Arizona, USA.
Jing LiKarmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA.
Wayne State University · USBarrow Neurological Institute · USThe Barbara Ann Karmanos Cancer Institute · US

Funding

Tumor Biology and Microenvironment (Program 1)P30CA022453 · NCI · WAYNE STATE UNIVERSITY · PI PAUL M STEMMER · 1985 to 2026
$68.4M
NCI NIH HHS P30 CA022453
6 · The paper itself

Abstract

This study determined absolute transporter protein abundances in isolated microvessels of human noncancerous cerebral cortex as well as brain metastases of patients with lung and breast cancer, using a validated targeted proteomics approach. As compared with those in microvessels of noncancerous cerebral cortex, the median protein abundances of glucose transporter 1 (a brain endothelial marker) and sodium-potassium pump (Na/K ATPase, a plasma membrane marker) were decreased by ~ 80% in brain metastasis microvessels. The major efflux transporters (ABCB1 and ABCG2) fell to undetectable in microvessels of more than 80% of brain metastasis specimens. Monocarboxylate transporter 1 was undetectable in microvessels of more than 80% of brain metastases, whereas large neutral amino acid transporter 1 levels remained unchanged. In conclusion, the integrity of the physical and biochemical barrier with respect to transporter protein expression is largely disrupted in brain metastasis tumor vasculatures. Differential transporter protein abundances at the blood-brain barrier and blood-brain tumor barrier provided mechanistic and quantitative basis for prediction of heterogeneous drug penetration into human brain and brain tumors, which is critical not only to the understanding of the success or failure of systemic chemotherapy in the treatment of brain tumors but also to the development of more effective therapeutic strategies.

Indexed as

AdultAgedAged, 80 and overAntineoplastic AgentsBlood-Brain BarrierBrain NeoplasmsBreast NeoplasmsCerebral CortexChildDrug Resistance, NeoplasmFemaleHumansLung NeoplasmsMaleMembrane Transport ProteinsMicrovesselsAntineoplastic AgentsMembrane Transport Proteins

Identifiers

PMID33566445
PMCPMC8301582
OpenAlexW3129068140

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.