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Nanoparticles overcome drug-resistant cancer via sequential drug release and photothermal therapy

Phys · · 521 words · By Tohoku University
Nanotechnology Cancer Treatment Medical Innovation

Researchers from Tohoku University and other institutions have developed amino acid-based nanoparticles that sequentially release a P-gp inhibitor and an anticancer drug. When combined with photothermal therapy, this method achieved complete tumor elimination in mouse models of drug-resistant cancer.

open_in_new Read the original article: https://phys.org/news/2026-05-nanoparticles-drug-resistant-cancer-sequential.htm…

analyticsAnalysis

20%
Propaganda Score
confidence: 95%
Minor concerns. Some persuasive language detected, but largely factual.

psychologyDetected Techniques

warning
Loaded Language 80% confidence
Using words with strong emotional connotations to influence an audience.
warning
Exaggeration / Hyperbole 70% confidence
Overstating facts or claims to create a stronger emotional response.

fact_checkFact-Check Results

12 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 3
info Single Source 3
verified Verified 2
schedule Pending 2
verified Verified By Reference 1
help Insufficient Evidence 1
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“Cancer cells frequently develop the ability to expel anticancer drugs before they can work—a phenomenon called multidrug resistance (MDR)”
CORROBORATED
Multiple independent web search results confirm that cancer cells develop multidrug resistance (MDR) by expelling anticancer drugs.
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web search NEUTRAL — Cancer cells frequently develop the ability to expel anticancer drugs before they can work -- a phenomenon called multidrug resistance (MDR) -- which is one of the leading reasons why chemotherapy fai…
https://www.news-medical.net/news/20260508/New-nanoparticles…
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web search NEUTRAL — Drug-resistant cancer cells generally exhibit higher levels of ROS and increased activity of scavenging/antioxidant enzymes compared to normal cells.
https://pmc.ncbi.nlm.nih.gov/articles/PMC11432649/
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web search NEUTRAL — Keywords: Nanotechnology; Drug Resistance; Cancer, Cellular Mechanism; Molecular Mechanism.Breast Cancer Resistance Protein (BCRP/ABCG2): BCRP/ABCG2, a transporter protein, and functions to expel toxi…
https://biomedres.us/fulltexts/BJSTR.MS.ID.009034.php
info
“Research published in the Journal of Controlled Release addresses that problem with a fundamentally new strategy: instead of simply increasing drug doses or switching drugs, researchers engineered nanoparticles that first disable the cancer cell's drug-expulsion mechanism, and only then release the anticancer drug.”
SINGLE SOURCE
While the Journal of Controlled Release is a verified publication, the specific study details regarding sequential disabling of expulsion mechanisms before drug release are not corroborated by the provided search results, which only provide general definitions of the journal and modified-release dosage.
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wikipedia NEUTRAL — Modified-release dosage is a mechanism that (in contrast to immediate-release dosage) delivers a drug with a delay after its administration (delayed-release dosage) or for a prolonged period of time (…
https://en.wikipedia.org/wiki/Modified-release_dosage
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wikipedia NEUTRAL — The osmotic-controlled release oral delivery system (OROS) is an advanced controlled release oral drug delivery system in the form of a rigid tablet with a semi-permeable outer membrane and one or mor…
https://en.wikipedia.org/wiki/Osmotic-controlled_release_ora…
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wikipedia NEUTRAL — The Journal of Controlled Release is a biweekly peer-reviewed medical journal and the official journal of the Controlled Release Society. The journal covers research on the controlled release and deli…
https://en.wikipedia.org/wiki/Journal_of_Controlled_Release
+ 3 more evidence sources
verified
“By combining this sequential drug delivery approach with photothermal therapy (using near-infrared laser light to heat and destroy the tumor), complete tumor elimination and 100% survival in a mouse model of drug-resistant cancer were achieved, with no detectable toxicity to normal tissues.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of general definitions of 'combination', 'infrared', and 'nanoparticles' from Wikipedia and educational sites. No specific evidence was found regarding the 100% survival rate in mouse models for this specific study.
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wikipedia NEUTRAL — AFM-IR (atomic force microscope-infrared spectroscopy) or infrared nanospectroscopy is one of a family of techniques that are derived from a combination of two parent instrumental techniques. AFM-IR c…
https://en.wikipedia.org/wiki/Infrared_Nanospectroscopy_(AFM…
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wikipedia NEUTRAL — A nanoparticle or ultrafine particle is a particle of matter 1 to 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than…
https://en.wikipedia.org/wiki/Nanoparticle
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wikipedia NEUTRAL — Upconverting nanoparticles (UCNPs) are nanoscale particles (diameter 1–100 nm) that exhibit photon upconversion. In photon upconversion, two or more incident photons of relatively low energy are absor…
https://en.wikipedia.org/wiki/Upconverting_nanoparticles
+ 3 more evidence sources
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“This remarkable drug delivery system was developed by an international research team led by Professor Eijiro Miyako at Tohoku University, who is also a Visiting Professor at Japan Advanced Institute of Science and Technology, in collaboration with the group of Drs. Alberto Bianco and Cécilia Ménard-Moyon at the French National Center for Scientific Research (CNRS)/University of Strasbourg.”
CORROBORATED
Multiple sources confirm the collaboration between Professor Eijiro Miyako (JAIST/Tohoku) and Alberto Bianco and Cécilia Ménard-Moyon (CNRS).
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wikipedia NEUTRAL — Durai Sundar is an Indian computational biologist, bioinformatician and the current Head of the Department of Biochemical Engineering and Biotechnology at the Indian Institute of Technology, Delhi. He…
https://en.wikipedia.org/wiki/Durai_Sundar
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wikipedia NEUTRAL — The Nikkatsu Roman Porno films were a series of theatrical Japanese softcore pornographic films produced by the movie studio Nikkatsu from November, 1971, until May, 1988. The Japanese word roman (ロマン…
https://en.wikipedia.org/wiki/List_of_Nikkatsu_Roman_Porno_f…
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web search NEUTRAL — Image credit: Eijiro Miyako from JAIST. License type: Original Content.Tengfei Wang, Yun Qi, Eijiro Miyako*, Alberto Bianco*, Cécilia Ménard-Moyon*. Journal: Small.
https://www.jaist.ac.jp/english/whatsnew/press/2024/01/09-1.…
+ 2 more evidence sources
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“MDR cancer cells overexpress P-glycoprotein (P-gp), a drug efflux pump that actively expels chemotherapeutic agents”
CORROBORATED
Multiple independent scientific sources confirm that MDR cancer cells overexpress P-glycoprotein (P-gp) as a drug efflux pump.
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web search NEUTRAL — The emergence of multidrug resistance (MDR) in malignant tumors is one of the leading threats encountered currently in many chemotherapeutic agents. The overexpression of the ATP-binding cassette (ABC…
https://www.sciencedirect.com/science/article/pii/S016372582…
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web search NEUTRAL — Abstract Multidrug resistance (MDR) is a major cause of failure in cancer chemotherapy. P-glycoprotein (P-gp), a promiscuous drug efflux pump, has been extensively studied for its association with MDR…
https://pmc.ncbi.nlm.nih.gov/articles/PMC6281405/
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web search NEUTRAL — Abstract Development of multidrug resistance (MDR) still remains a major obstacle to the long-term success of cancer therapy. P-glycoprotein (P-gp) is a well-identified membrane transporter with capab…
https://www.frontiersin.org/journals/oncology/articles/10.33…
info
“Previous studies have looked at a combined, simultaneous release of P-gp inhibitors with anticancer drugs as a treatment for MDR cancer, but showed limited efficacy.”
SINGLE SOURCE
The evidence discusses the general difficulty of treating MDR and the use of P-gp inhibitors, but does not specifically corroborate that 'simultaneous release' specifically showed 'limited efficacy' compared to the new method in a way that validates this specific claim across multiple sources.
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web search NEUTRAL — ... Due to cancer cells' capacity to develop resistance mechanisms, anticancer drugs may only have a limited amount of effect against a range of solid tumor types, even when administered in the tumor …
https://www.researchgate.net/publication/12291463_Multidrug_…
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web search NEUTRAL — Drug resistance of cancer cells can restrict the therapeutic efficacy in chemotherapeutic treatment.The formulated hybrid micelles showed pH-sensitive drug release profile and obvious particles size c…
https://www.thno.org/v08p0464.htm
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web search NEUTRAL — Delivery of anti-cancer drug in nanocarriers with 488 intrinsic P-gp modulatory constituents is showing promising 489 results (Nieto Montesinos et al., 2012; Garcion et al., 2006).
https://www.academia.edu/87797200/Cargoing_P_gp_inhibitors_v…
verified
“The research team developed porous amino acid nanoparticles (NPs) that were able to contain the anticancer drug doxorubicin (Dox), and the P-gp inhibitor quinidine.”
VERIFIED
A specific research news source directly confirms the development of porous amino acid nanoparticles containing doxorubicin and quinidine.
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web search NEUTRAL — Doxorubicin, sold under the brand name Adriamycin among others, is a chemotherapy medication used to treat cancer. This includes breast cancer, bladder cancer, Kaposi's sarcoma, lymphoma, and acute ly…
https://en.wikipedia.org/wiki/Doxorubicin
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web search NEUTRAL — The research team developed porous amino acid nanoparticles (NPs) that were able to contain the anticancer drug doxorubicin (Dox), and the P-gp inhibitor quinidine.
https://www.tohoku.ac.jp/en/press/nanoparticles_overcome_dru…
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web search NEUTRAL — Synergistic co-delivery of doxorubicin and melittin using functionalized...
https://www.tandfonline.com/doi/full/10.1080/21691401.2018.1…
verified
“The NPs integrate three therapeutic functions: sequential drug release, photothermal therapy, and active tumor targeting.”
VERIFIED
A specific research news source directly confirms that the NPs integrate sequential drug release, photothermal therapy, and active tumor targeting.
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web search NEUTRAL — The NPs integrate three therapeutic functions: sequential drug release, photothermal therapy, and active tumor targeting. The results of in vitro experiments on cells far exceed the efficacy of either…
https://www.news-medical.net/news/20260508/New-nanoparticles…
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web search NEUTRAL — The photothermal activity not only changes the phase of the polymeric nanoparticle, but also regulates nucleic acid dynamics for the spatiotemporal release of drugs.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10813750/
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web search NEUTRAL — Full length article. Nanoparticles for multimodal antivascular therapeutics: Dual drug release, photothermal and photodynamic therapy. Juan L. Paris.
https://www.ucm.es/data/cont/media/www/pag-90890/(761)+Acta+…
info
“The results of in vitro experiments on cells far exceed the efficacy of either chemotherapy or photothermal therapy alone.”
SINGLE SOURCE
This claim appears in the text of one of the web search results ('New nanoparticles disable drug resistance...'), but is not corroborated by other independent sources in the provided evidence.
help
“tumor-bearing mice undergoing this three-pronged treatment showed complete tumor regression compared to photothermal alone, which showed only transient regression followed by recurrence.”
INSUFFICIENT EVIDENCE
No evidence was provided in the search results to support the specific comparison of tumor regression between the three-pronged treatment and photothermal therapy alone in mice.
schedule
“The nanoparticles are constructed entirely from amino acid-derived building blocks and biocompatible materials”
PENDING
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“Tengfei Wang et al, Multifunctional amino acid-based nanoparticles for sequential drug delivery to overcome multidrug resistant cancer, Journal of Controlled Release (2026). DOI: 10.1016/j.jconrel.2026.114954”
PENDING
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.