Evidence map›Paper›PMID 25529761›Full record

ArticleCancer science2015

Synthesis and therapeutic effect of styrene-maleic acid copolymer-conjugated pirarubicin.

Kenji Tsukigawa, Long Liao, Hideaki Nakamura, Jun Fang, Khaled Greish, Masaki Otagiri, Hiroshi Maeda

Open access · goldAbstract read
In one paragraph

Article in Cancer science, 2015. 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
2.7field-weighted citation impact, top 11% 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, 55 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Overcoming Physiological Barriers to Nanoparticle Delivery-Are We There Yet?Frontiers in bioengineering and biotechnology · 2019
    Review
  11. Article
  12. Article
  13. Article
  14. 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

7 authors at 1 institution in 1 country.

Kenji TsukigawaInstitute for Drug Delivery Science, Sojo University, Kumamoto, Japan; Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan.
Long Liao
Hideaki Nakamura
Jun Fang
Khaled Greish
Masaki Otagiri
Hiroshi Maeda
Sojo University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previously, we prepared a pirarubicin (THP)-encapsulated micellar drug using styrene-maleic acid copolymer (SMA) as the drug carrier, in which active THP was non-covalently encapsulated. We have now developed covalently conjugated SMA-THP (SMA-THP conjugate) for further investigation toward clinical development, because covalently linked polymer-drug conjugates are known to be more stable in circulation than drug-encapsulated micelles. The SMA-THP conjugate also formed micelles and showed albumin binding capacity in aqueous solution, which suggested that this conjugate behaved as a macromolecule during blood circulation. Consequently, SMA-THP conjugate showed significantly prolonged circulation time compared to free THP and high tumor-targeting efficiency by the enhanced permeability and retention (EPR) effect. As a result, remarkable antitumor effect was achieved against two types of tumors in mice without apparent adverse effects. Significantly, metastatic lung tumor also showed the EPR effect, and this conjugate reduced metastatic tumor in the lung almost completely at 30 mg/kg once i.v. (less than one-fifth of the maximum tolerable dose). Although SMA-THP conjugate per se has little cytotoxicity in vitro (1/100 of free drug THP), tumor-targeted accumulation by the EPR effect ensures sufficient drug concentrations in tumor to produce an antitumor effect, whereas toxicity to normal tissues is much less. These findings suggest the potential of SMA-THP conjugate as a highly favorable candidate for anticancer nanomedicine with good stability and tumor-targeting properties in vivo.

Indexed as

AnimalsAntineoplastic AgentsCell Line, TumorDoxorubicinDrug CarriersHeLa CellsHumansLung NeoplasmsMaleMaleatesMiceMice, Inbred BALB CMicellesMitochondrial ProteinsPolystyrenesRatsAntineoplastic AgentsDoxorubicinDrug CarriersMaleatesMicellesMitochondrial ProteinspirarubicinPolystyrenesSPATA18 protein, humanstyrene-maleic acid polymerAntimetastatic propertyantitumor effectenhanced permeability and retention effectprolonged plasma half-lifeSMA-THP conjugate

Identifiers

PMID25529761
PMCPMC4376435
OpenAlexW2024253505

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.