Combining nanodrug-based chemotherapy（化学疗法） and cryoablation（冷冻消失术） provides an effective strategy to eliminate cancer stem-like cells -- the root of cancer resistance and metastasis（转移，新陈代谢）, which will help to improve the safety and efficacy of treating malignancies that are refractory1（难治的） to conventional therapies. Cryoablation is an energy-based, minimally2 invasive surgical3 technique that has been investigated to treat a variety of diseases including cancer, which is done by freezing the diseased tissue to subzero temperature to induce irreversible damage. It is particularly attractive for fighting against breast cancer due to its excellent cosplaymetic4 outcome to preserve the organ with unnoticeable scar formation on skin. However, cryoablation alone has limited effectiveness on eradicating5 cancer stem-like cells , which may lead to cancer recurrence6 and/or metastasis post operation. A team of researchers from the Department of Biomedical Engineering and Comprehensive Cancer Center at The Ohio State University introduced an innovative7 strategy by combining cryoablation with nanoparticle-medicated chemotherapy and demonstrated that the combined therapy can significantly augment8 the destruction of CSCs, resulting in eliminating nearly all CSCs. This technology provides a new approach to overcome drug resistance of CSCs and improve the safety and efficacy of cancer cryoablation.This novel combined therapy of cryoablation and nanodrug is a significant step forward in improving the safety and efficacy of fighting against cancer. Our study provides the first account of minimizing cancer recurrence by destroying the cancer stem-like cells in the field of cryoablation for cancer treatment. said Xiaoming He, Ph.D., of The Ohio State University and senior author of this paper. It is valuable to facilitate the clinical applications of cryoablation by eliminating the root of cancer resistance -- the cancer stem-like cells.The nanoparticles used in this study were optimized9 for effective drug delivery. said Wei Rao, Ph.D., the lead author of the paper. According to the researchers, an optimized size of the nanodrug facilitates its uptake by cancer cells via endocytosis（内吞用途）. A positively10 charged nanodrug has high electrostatic affinity11 to the negatively charged cell plasma12 membrane13, which should further facilitate its uptake by cancer cells. Moreover, materials on the nanoparticles have high affinity to CD44 that is one of the common protein complexes overexpressed on cancer stem-like cells. Therefore, the use of nanodrug can help to achieve much-enhanced bioavailability of anticancer drug to cancer stem-like cells compared to conventional chemotherapy using free drug. This particularly attractive feature meets the demand of targeted delivery and therapy and could minimize the drug systemic toxicity14. Its combination with cryoablation can significantly augment cryoinjury to ensure complete destruction of all cancer stem-like cells.Currently, research on the combined therapy of cryoablation and nanodrug showed promising15 results using 3D mammosphere model at the microscale. Future research will focus more on in vivo studies to monitor tumor16 relapse after the combined treatment and further translate this technology into the clinic. Although more research is required to ascertain17 its safety and efficacy, this study provides a novel strategy of combining cryoablation and nanodrug that demonstrates great potential to eliminate cancer from its root -- the cancer stem-like cells.
点击收听单词发音
1 refractory adj.倔强的，难驾驭的 参考例句： He is a very refractory child.他是一个非常倔强的孩子。 Silicate minerals are characteristically refractory and difficult to break down.硅酸盐矿物的特征是耐熔和很难离别。
相关文章推荐
