中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (8): 1940-1951.doi: 10.12307/2026.607

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

pH值/近红外激光刺激响应型载药系统的构建及在抗口腔鳞癌中的应用

闵昌琴1,黄  英2    

  1. 1成都市温江区人民医院,四川省成都市  611100;2西藏自治区人民政府驻成都办事处医院,四川省成都市  610041
  • 收稿日期:2024-12-09 接受日期:2025-03-19 出版日期:2026-03-18 发布日期:2025-07-16
  • 通讯作者: 黄英,主治医师,西藏自治区人民政府驻成都办事处医院,四川省成都市 610041
  • 作者简介:闵昌琴,女,1990年生,四川省成都市人,汉族,硕士,主治医师,主要从事口腔生物材料研究。

Construction of pH/near-infrared laser stimuli-responsive drug delivery system and its application in treatment of oral squamous cell carcinoma

Min Changqin1, Huang Ying2   

  1. 1Chengdu Wenjiang District People’s Hospital, Chengdu 611100, Sichuan Province, China; 2Hospital of Chengdu Office of the People’s Government of Tibet Autonomous Region, Chengdu 610041, Sichuan Province, China
  • Received:2024-12-09 Accepted:2025-03-19 Online:2026-03-18 Published:2025-07-16
  • Contact: Huang Ying, Attending physician, Hospital of Chengdu Office of the People’s Government of Tibet Autonomous Region, Chengdu 610041, Sichuan Province, China
  • About author:Min Changqin, MS, Attending physician, Chengdu Wenjiang District People’s Hospital, Chengdu 611100, Sichuan Province, China

摘要:

文题释义:
纳米羟基磷灰石:羟基磷灰石是人体骨、牙无机组成的主要成分,具有优异的生物相容性和生物活性。纳米羟基磷灰石是颗粒尺寸在纳米量级的羟基磷灰石,具有强大的药物吸附和负载能力,是一种理想的无机药物载体,在肿瘤诊断和治疗中具有潜在的应用价值。
光热治疗:是一种利用光能转化为热能的治疗方法,被广泛应用于肿瘤治疗中。光热治疗的原理是通过特定波长的光源照射到患处,光能被组织吸收后转化为热能导致局部温度升高,从而达到治疗效果。在肿瘤治疗中,光热疗法利用纳米材料将光能集中并精确传递至肿瘤部位,能有效杀伤癌细胞,同时对周围健康组织的损伤较小。

背景:口腔鳞状细胞癌是口腔颌面部最常见的恶性肿瘤,临床常见治疗方式难以获得满意结果,因此,开发新材料和治疗策略对于治疗口腔鳞状细胞癌具有重要临床意义。
目的:以纳米羟基磷灰石为药物载体,整合聚多巴胺和阿霉素构建pH值/近红外激光刺激响应性复合体,探究该复合体对口腔鳞状细胞癌HSC-4细胞的光热-化学协同治疗作用和机制。
方法:利用水热法制备纳米羟基磷灰石药物载体,负载光热试剂聚多巴胺和化疗药物阿霉素,构建纳米羟基磷灰石-聚多巴胺-阿霉素复合体,表征该复合体的形貌、表面电荷、紫外-近红外光谱、晶型和光热性能。将纳米羟基磷灰石-聚多巴胺-阿霉素复合体浸泡于不同pH值的PBS中,并在pH=5 PBS中增加808 nm近红外激光照射,检测释药行为。采用CCK-8法检测纳米羟基磷灰石-聚多巴胺-阿霉素复合体联合激光照射对人口腔舌鳞癌细胞HSC-4和小鼠成纤维细胞L929的细胞毒性作用。通过流式细胞术检测纳米羟基磷灰石-聚多巴胺-阿霉素复合体联合激光照射对HSC-4细胞凋亡的影响。采用流式细胞术和激光共聚焦检测HSC-4细胞对纳米羟基磷灰石-聚多巴胺-阿霉素复合体的摄取和分布情况。
结果与结论:①纳米羟基磷灰石-聚多巴胺-阿霉素复合体呈均匀棒状结构,Zeta电位值变化、紫外-可见光光谱证实复合体制备成功。纳米羟基磷灰石-聚多巴胺-阿霉素复合体具有良好的光热转换性能和光热稳定性,释药具有前期突释、后期缓释行为,并且具有pH值/近红外激光刺激响应性能;在808 nm近红外光照射下,该复合体具有高效低毒的抗口腔鳞癌光热-化学联合治疗效果,可促进HSC-4细胞凋亡。纳米羟基磷灰石-聚多巴胺-阿霉素复合体可被HSC-4细胞摄取,随着培养时间的增加和激光照射,细胞摄取复合体的量增加,阿霉素释放进入胞核并杀伤肿瘤细胞。②结果表明,纳米羟基磷灰石-聚多巴胺-阿霉素复合体具有良好的光热性能和pH值/近红外激光刺激性,在808 nm近红外光照射下展现出潜在的光热-化学协同抗肿瘤效应。
https://orcid.org/0009-0004-8369-5596(闵昌琴)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 口腔鳞状细胞癌">, 纳米羟基磷灰石">, 聚多巴胺">, 阿霉素">, 光热-化学联合治疗">, pH值/近红外激光刺激响应

Abstract: BACKGROUND: Oral squamous cell carcinoma is the most common malignant tumor in the oral and maxillofacial region. Common clinical treatments are difficult to achieve satisfactory results. Therefore, the development of new materials and treatment strategies is of great clinical significance for the treatment of oral squamous cell carcinoma.
OBJECTIVE: To construct the pH/near-infrared laser responsive complex by integrating polydopamine and doxorubicin with nanohydroxyapatite as drug carrier, and investigate its photothermal and chemical synergic therapeutic effect and mechanism of the complex on oral squamous cell carcinoma HSC-4 cells. 
METHODS: Nanohydroxyapatite drug carriers were prepared by hydrothermal method, loaded with photothermal reagent polydopamine and chemotherapeutic drug doxorubicin, and nanohydroxyapatite-polydopamine-doxorubicin complexes were constructed. The morphology, surface charge, ultraviolet-near-infrared spectrum, crystal form and photothermal properties of the complex were characterized. The nanohydroxyapatite-polydopamine-doxorubicin complex was immersed in PBS with different pH values, and 808 nm near-infrared laser irradiation was added in pH=5 PBS to detect the drug release behavior. CCK-8 assay was used to detect the cytotoxic effect of nanohydroxyapatite-polydopamine-doxorubicin complex combined with laser irradiation on human oral tongue squamous cell carcinoma HSC-4 and mouse fibroblast L929. The effect of nanohydroxyapatite-polydopamine-doxorubicin complex combined with laser irradiation on HSC-4 cell apoptosis was detected by flow cytometry. The uptake and distribution of nanohydroxyapatite-polydopamine-doxorubicin complex by HSC-4 cells were detected by flow cytometry and laser confocal microscopy. 
RESULTS AND CONCLUSION: (1) The nanohydroxyapatite-polydopamine-doxorubicin complex showed a uniform rod-like structure, and the Zeta potential value change and ultraviolet-visible spectrum confirmed that the complex was successfully prepared. The nanohydroxyapatite-polydopamine-doxorubicin complex had good photothermal conversion performance and photothermal stability, and the drug release had an early burst release and a late sustained release behavior, and had pH/near-infrared laser stimulation response performance. Under 808 nm near-infrared light irradiation, the complex had a high-efficiency and low-toxic photothermal-chemical combined treatment effect against oral squamous cell carcinoma, and could promote HSC-4 cell apoptosis. The nanohydroxyapatite-polydopamine-doxorubicin complex could be taken up by HSC-4 cells. With the increase of culture time and laser irradiation, the amount of cell uptake of the complex increased, and doxorubicin was released into the nucleus and kills tumor cells. (2) The results show that the nanohydroxyapatite-polydopamine-doxorubicin complex has good photothermal performance and pH/near-infrared laser stimulation, and exhibits potential photothermal-chemical synergistic anti-tumor effects under 808 nm near-infrared light irradiation.


Key words: oral squamous cell carcinoma">, nanohydroxyapatite">, polydopamine">, doxorubicin">, photothermal-chemotherapy">, pH value/near-infrared laser stimulation response

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