Clinical cancer treatments nowadays still face the challenge of recurrence due to the residual cancer cells and minute lesions in surgeries or chemotherapies. To effectively address the problem, we introduce a strategy for constructing cancer cell nuclear-targeted copper sulfide nanoparticles (NPs) with a significant photothermal effect to completely kill residual cancer cells and prevent local cancer recurrence. The NPs could directly target the tumor cells and further enter the nucleus by the surface modification of RGD and TAT peptides. Under the irradiation of 980 nm near-infrared laser, the NPs rapidly increase the temperature of the nucleus, destroy the genetic substances, and ultimately lead to an exhaustive apoptosis of the cancer cells. In vivo experiments show that the designed NPs could effectively treat cancer and prevent the return of cancer with a single laser irradiation for 5 min. The photothermal therapy strategy with nuclear targeting for cancer therapy and anti-recurrence will provide more possibilities to develop efficient platforms for treating cancer.
Dihydroartemisinin (DHA) has attracted increasing attention as an anticancer agent. However, using DHA to treat cancer usually depends on the synergistic effects of exogenous components, and the loss of DHA during delivery reduces its effectiveness in cancer therapy. Reported herein is a programmed release nanoplatform of DHA to synergistically treat cancer with a Fe‐TCPP [(4,4,4,4‐(porphine‐5,10,15,20‐tetrayl) tetrakis(benzoic acid)] NMOF (nanoscale MOF) having a CaCO3 mineralized coating, which prevents DHA leakage during transport in the bloodstream. When the nanoplatform arrives at the tumor site, the weakly acidic microenvironment and high concentration of glutathione (GSH) trigger DHA release and TCPP activation, enabling the synergistic Fe2+‐DHA‐mediated chemodynamic therapy, Ca2+‐DHA‐mediated oncosis therapy, and TCPP‐mediated photodynamic therapy. In vivo experiments demonstrated that the nanoplatform showed enhanced anticancer efficiency and negligible toxicity.
Although
ferroptosis therapy has been proven to be a promising
strategy for cancer treatment, its efficacy still might be limited
by insufficient H2O2 supply in tumor tissue.
Herein, we designed a cancer cell membrane-cloaked cascade nanoreactor
based on ferric metal–organic frameworks (MOF) and glucose
oxidase (GOx) decoration for synergistic ferroptosis–starvation
anticancer therapy. The GOx can catalyze glucose to generate sufficient
H2O2 for ferroptosis therapy, and the glucose
consumption caused by GOx can be utilized as another attractive cancer
treatment strategy called starvation therapy. When the nanoreactor
reached tumor sites, high concentration of GSH reduced Fe3+ to trigger structure collapse of MOF and release Fe2+ and GOx catalyzed the oxidation of glucose to generate H2O2. Then Fenton reaction happened between H2O2 and Fe2+ to produce hydroxyl radicals (•OH) and promoted ferroptosis therapy. With these cascade
reactions, the synergistic ferroptosis–starvation anticancer
therapy was realized. Furthermore, the cancer cell membrane endows
the nanoreactor homologous targeting and immune escaping ability,
which facilitated the nanoreactor to accumulate into tumor site with
high efficiency. The nanoreactor exhibits high efficiency for tumor
suppression with the in situ consumed and produced
compounds, which can promote the development of precise cooperative
cancer therapy with spatiotemporal controllability.
Tumor hypoxia typically occurs inside a solid tumor with an inadequate oxygen supply, sharply reducing the therapeutic efficiency of radiotherapy and significantly increasing the risk of local tumor recurrence.
A series of binary and ternary mixed LnMOFs with high stability showing potential applications in wide-range thermosensors and white LEDs are reported.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.