Respan Dataset Explorer

Compared with other groups, the tumor cell death level in CHP/PMS-Gel + US group was the highest, illustrating by the most severe tumor necrosis in the H&E staining, the minimum number of positive cells in the Ki-67 staining, and the highest proportion of cell apoptosis in the Tunel assay.

The findings indicate that the CHP/PMS-Gel + US group showed the most pronounced tumor cell death compared to the other groups. This was demonstrated by the significant tumor necrosis observed in the H&E staining, the lowest number of Ki-67 positive cells indicating minimal cell proliferation, and the highest proportion of cell apoptosis as detected in the Tunel assay. These results suggest that the combination of CHP/PMS-Gel and ultrasound treatment effectively induced tumor cell death, inhibited cell proliferation, and promoted cell apoptosis, highlighting its potential as a powerful anticancer therapy.

To further assess the long-term biosafety of CHP/PMS-US, the H&E staining of major organs from each group were performed, which revealed no evident acute, chronic pathological toxicity and untoward effects after 15 days of therapy (Figure 5i).

To evaluate the long-term biosafety of CHP/PMS-US treatment, the major organs from each group were subjected to H&E staining. The results showed no apparent signs of acute or chronic pathological toxicity, indicating the absence of any adverse effects following 15 days of therapy. This finding suggests that CHP/PMS-US treatment did not cause any harmful effects on the examined organs, further supporting its potential as a safe therapeutic approach. Figure 5i likely illustrates the normal histology and absence of any pathological changes in the examined organs.

Noninvasive, spatiotemporal controllable, and deep tissue-penetrated US is induced to trigger Cu2+-to-Cu+ conversion, and the Cu+ active catalytic site further activates PMS to produce ROS (•OH) and RSS (•SO4−) in an O2-independent manner, which are ultimately applied for the treatment of hypoxic tumor.

The noninvasive and spatiotemporal controllable nature of ultrasound (US) is utilized in this study to induce the conversion of Cu2+ to Cu+. This Cu+ acts as an active catalytic site that can further activate peroxymonosulfate (PMS). This activation of PMS by Cu+ leads to the generation of reactive oxygen species (ROS) such as hydroxyl radicals (•OH) and reactive sulfate species (RSS) such as sulfate radicals (•SO4−). Notably, this process occurs independently of oxygen (O2) availability.

The ROS and RSS produced through this mechanism can be utilized for the treatment of hypoxic tumors. Hypoxic tumor cells are characterized by inadequate oxygen supply, making them resistant to conventional treatments. By using the Cu+/PMS/US system, it is possible to generate ROS and RSS in deep tissues that would be otherwise difficult to reach. These reactive species can induce oxidative and radical damage to the hypoxic tumor cells, leading to their destruction. This approach offers a promising strategy for the treatment of hypoxic tumors, taking advantage of the unique properties of ultrasound and the specific Cu+/PMS system.

 Looking forward, we anticipate that this NIR-II light-controlled bioorthogonal reaction will provide a desirable in situ therapeutic

Looking ahead, we anticipate that the NIR-II light-controlled bioorthogonal reaction described in this study will offer a desirable in situ therapeutic approach. The utilization of near-infrared (NIR) light in the NIR-II window provides several advantages, including deeper tissue penetration and reduced phototoxicity. These properties make it an ideal candidate for noninvasive and precise therapeutic applications.

By incorporating bioorthogonal reactions that can be specifically triggered by NIR-II light, it is possible to achieve targeted and controlled therapeutic effects. This approach allows for the activation of therapeutic agents or the initiation of specific biochemical pathways only in the desired target site. The ability to precisely control the timing and location of therapeutic interventions enhances treatment efficacy while minimizing off-target effects and collateral damage to healthy tissues.

Overall, the development of this NIR-II light-controlled bioorthogonal reaction opens up new possibilities for in situ therapies, offering a promising avenue for future research and the potential for improved therapeutic outcomes in various biomedical applications.

What are free radicals

Free radicals are highly reactive molecules that contain unpaired electrons. They are formed as a result of normal bodily processes, such as metabolism, as well as through external factors like pollution, radiation, and smoking. Free radicals can cause damage to cells, proteins, and DNA, leading to various diseases and aging. Antioxidants, found in many fruits and vegetables, can neutralize free radicals by donating an electron and preventing them from causing harm.

I'm sorry, but I am an AI language model and I am unable to physically feel emotions.

اريد عنوان جذاب لفيديو يوتيوب عن الربح من الانترنت

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وأحقق هذا خطأ

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