肿瘤治疗仍然是生物医学研究的一个突出领域。围绕各种化学治疗(化疗)药物和其他治疗药物的不良反应和靶向疗效的研究推动了各种药物载体的发展。这些载体聚焦于提高肿瘤部位的药物浓度,最大限度地减少全身不良反应,并改善治疗效果。在已报道的递送系统中,可注射水凝胶由于其微创的药物递送特性,已成为化疗药物体内递送的重要载体形式。文章系统地总结了可注射水凝胶的类型和特征,并进一步概括了可注射水凝胶装载药物的方式,同时深入讨论可注射水凝胶在治疗肿瘤的各种药物的递送应用。文章对原位注射水凝胶在治疗肿瘤方面存在的潜在性挑战和可能的解决方案提供了动态前瞻性的参考。可注射的水凝胶作为药物传递系统用于肿瘤治疗具有良好的发展前景。
Tumor treatment remains a prominent area of biomedical research.The researches surrounding the adversereactions and targeted efficacy of various chemotherapy drugs and other therapeutic drugs have driven the development of various drug carriers.These carriers focus on increasing drug concentration at tumor site,minimizing systemic adverse reactions,and improving treatment outcomes.In the reported delivery systems,injectable hydrogels have become an important carrier for the delivery of chemotherapeutic drugs in vivo due to their minimally invasive characteristics.This review systematically summarized the types and characteristics of injectable hydrogels,and further summarized their drug loading methods.At the same time,the application of injectable hydrogels in the delivery of various drugs for tumor treatment was discussed in depth.This review provides dynamic and prospective reference for the potential challenges and possible solutions of the in situ injectable hydrogels for tumor therapy.Injectable hydrogels as drug delivery systems are with good prospects for tumor treatment.
目的 初步探讨可注射型载阿霉素水凝胶对胶质瘤的治疗作用。方法 使用透析法检测载阿霉素水凝胶在体外释放药物的情况。构建大鼠皮下C6胶质瘤模型,按不同给药途径分为空白对照组、经静脉注射组、水凝胶组。给药15 h后,经免疫荧光检测阿霉素在肿瘤内部的分布情况。给药7 d后,计算出各组的抑瘤率;并对肿瘤组织进行苏木精-伊红染色。结果 在体外,载阿霉素水凝胶具有缓释药物的性能。在体内,与经静脉给药相比,局部注射载阿霉素水凝胶使瘤内分布更多阿霉素,抑瘤率更高(42% vs 64%),肿瘤细胞坏死更明显。结论 载阿霉素水凝胶可为胶质瘤局部化学治提供新的载体。
Objective To investigate the therapeutic effect of injectable doxorubicin-containing hydrogel on glioma.Methods The release of doxorubicin hydrogel in vitro was detected by dialysis.The subcutaneous C6 glioma model of rats was constructed and divided into blank control group,intravenous injection group and hydrogel group according to different administration methods.The distribution of doxorubicin in the tumor was detected by immunofluorescence 15 hours after administration.After 7 days of administration,the tumor inhibition rate of each group was calculated.The tumor tissue was stained with hematoxylin eosin.Results In vitro,doxorubicin-containing hydrogels had sustained drug release properties.In vivo,compared with intravenous administration,local injection of doxorubicin-containing hydrogel resulted in more doxorubicin distribution,higher tumor inhibition rate(42% vs 64%)and more obvious tumor cell necrosis.Conclusions Doxorubicin-containing hydrogel can provide a new carrierfor local chemotherapy of glioma.