Evidence map›Paper›PMID 35520220›Full record

ArticleRSC advances2019

Spermine modified polymeric micelles with pH-sensitive drug release for targeted and enhanced antitumor therapy.

Yang Chen, Cejun Yang, Juan Mao, Haigang Li, Jinsong Ding, Wenhu Zhou

Open access · goldAbstract read
In one paragraph

Article in RSC advances, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

25 citing papers in PubMed, 62 citations in OpenAlex.

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  17. Harnessing therapeutic potential of bromelain and its nanoformulations: sojourn of pineapple from food to nanomedicine.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2025
    Review
  18. Article
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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

6 authors at 2 institutions in 1 country.

Yang ChenXiangya School of Pharmaceutical Sciences, Central South University Changsha Hunan 410013 China zhouwenhuyaoji@163.com.
Cejun YangDepartment of Radiology, The Third Xiangya Hospital, Central South University Changsha 410013 P. R. China.
Juan MaoXiangya School of Pharmaceutical Sciences, Central South University Changsha Hunan 410013 China zhouwenhuyaoji@163.com.
Haigang LiSchool of Pharmaceutical Sciences, Changsha Medical University Changsha Hunan 410013 China.
Jinsong DingXiangya School of Pharmaceutical Sciences, Central South University Changsha Hunan 410013 China zhouwenhuyaoji@163.com.
Wenhu ZhouXiangya School of Pharmaceutical Sciences, Central South University Changsha Hunan 410013 China zhouwenhuyaoji@163.com.ORCID https://orcid.org/0000-0003-3794-661X
Central South University · CNChangsha Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tumor targeting delivery of chemotherapeutic drugs by nanocarriers has been demonstrated to be a promising strategy for cancer therapy with improved therapeutic efficacy. In this work, we reported a novel type of active targeting micelle with pH-responsive drug release by using biodegradable poly(lactide)-poly(2-ethyl-2-oxazoline) di-block copolymers functionalized with spermine (SPM). SPM has been considered as a tumor binding ligand through its specific interaction with the polyamine transport system (PTS), a transmembrane protein overexpressed on various types of cancer cell, while its application in nano-drug delivery systems has rarely been explored. The micelles with spherical shape (∼110 nm) could load hydrophobic paclitaxel (PTX) with high capacity, and release the payload much faster at acidic pH (4.5-6.5) than at pH 7.4. This pH-responsive property assisted the rapid escape of drug from the endo/lysosome after internalization as demonstrated by confocal laser scanning microscopy images using coumarin-6 (Cou-6) as a fluorescent probe. With surface SPM modification, the micelles displayed much higher cellular uptake than SPM lacking micelles in various types of cancer cells, demonstrating tumor targeting ability. The uptake mechanism of SPM modified micelles was explored by flow cytometry, which suggested an energy-consuming sag vesicle-mediated endocytosis pathway. As expected, the micelles displayed significantly enhanced anti-cancer activity. This work demonstrates that SPM modified pH-sensitive micelles may be potential drug delivery vehicles for targeting and effective cancer therapy.

Identifiers

PMID35520220
PMCPMC9063029
OpenAlexW2937161801

What OpenQuestion holds

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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.