Evidence map›Paper›PMID 36961946›Full record

ArticleJournal of the American Chemical Society2023

Enzyme-Responsive Double-Locked Photodynamic Molecular Beacon for Targeted Photodynamic Anticancer Therapy.

Leo K B Tam, Jacky C H Chu, Lin He, Caixia Yang, Kam-Chu Han, Peter Chi Keung Cheung, Dennis K P Ng, Pui-Chi Lo

Open access · hybridAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
14.5field-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

38 citing papers in PubMed, 132 citations in OpenAlex.

  1. Article
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  5. Article
  6. Article
  7. Review
  8. Stimuli-Responsive Supramolecular Biomaterials for Cancer Theranostics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Semiconducting Open-Shell Radicals for Precise Tumor Activatable Phototheranostics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  20. 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

8 authors at 3 institutions in 2 countries.

Leo K B TamDepartment of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
Jacky C H ChuDepartment of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.ORCID 0000-0003-3858-3312
Lin HeDepartment of Biomedical Sciences and Tung Biomedical Sciences Centre, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
Caixia YangDepartment of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
Kam-Chu HanDepartment of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong, China.
Peter Chi Keung CheungSchool of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.ORCID 0000-0001-5155-7173
Dennis K P NgDepartment of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.ORCID 0000-0001-9087-960X
Pui-Chi LoDepartment of Biomedical Sciences and Tung Biomedical Sciences Centre, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.ORCID 0000-0002-0315-8538
Chinese University of Hong Kong · HKCity University of Hong Kong · HKPamela Youde Nethersole Eastern Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An advanced photodynamic molecular beacon (PMB) was designed and synthesized, in which a distyryl boron dipyrromethene (DSBDP)-based photosensitizer and a Black Hole Quencher 3 moiety were connected via two peptide segments containing the sequences PLGVR and GFLG, respectively, of a cyclic peptide. These two short peptide sequences are well-known substrates of matrix metalloproteinase-2 (MMP-2) and cathepsin B, respectively, both of which are overexpressed in a wide range of cancer cells either extracellularly (for MMP-2) or intracellularly (for cathepsin B). Owing to the efficient Förster resonance energy transfer between the two components, this PMB was fully quenched in the native form. Only upon interaction with both MMP-2 and cathepsin B, either in a buffer solution or in cancer cells, both of the segments were cleaved specifically, and the two components could be completely separated, thereby restoring the photodynamic activities of the DSBDP moiety. This PMB could also be activated in tumors, and it effectively suppressed the tumor growth in A549 tumor-bearing nude mice upon laser irradiation without causing notable side effects. In particular, it did not cause skin photosensitivity, which is a very common side effect of photodynamic therapy (PDT) using conventional "always-on" photosensitizers. The overall results showed that this "double-locked" PMB functioned as a biological AND logic gate that could only be unlocked by the coexistence of two tumor-associated enzymes, which could greatly enhance the tumor specificity in PDT.

Indexed as

PhotochemotherapyAnimalsCathepsin BCell Line, TumorMatrix Metalloproteinase 2MiceMice, NudePeptidesPhotosensitizing AgentsCathepsin BMatrix Metalloproteinase 2PeptidesPhotosensitizing Agents

Identifiers

PMID36961946
PMCPMC10080691
OpenAlexW4360826416

What OpenQuestion holds

Textmetadata
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.