Specific Delivery of ZHER2 affibody-conjugated gold nanoparticles as radiosensitizer to HER2-overexpressing malignant cells
محل انتشار: چهاردهمین کنگره بین المللی سرطان پستان
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 406
نسخه کامل این مقاله ارائه نشده است و در دسترس نمی باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICBCMED14_090
تاریخ نمایه سازی: 21 مرداد 1398
چکیده مقاله:
Introduction & Aim: Over-expression of HER2 is associated with enhanced invasiveness and also resistance to chemotherapy and radiotherapy in patients with cancer. Today, antibody-drug conjugates (ADCs) which are produced by conjugation of a toxin to a mAb are used for specific ablation of malignant cells. Affibody as a member of the antibody mimics family has been introduced in recent years as a tumor targeting agent. Nanoparticles which are composed of gold could act as radiosensitizer to enhance the radiation effects on tumor cells. Methods: In our study, malignant cells SK-BR-3, HN-5, SK-OV-3, and MCF-7 with different level of HER2 expression were treated by ZHER2 affibody, prepared gold nanoparticle, and ZHER2 affibody-conjugated gold nanoparticles and after X-ray radiotherapy, cell viability was investigated using MTT assay. Results; The synthesized GNPs could reduce viability of all tested malignant cell lines in a dose dependent manner while SK-BR-3 and MCF-7 cell lines were the most sensitive cells. In a similar manner, GNP-ZHER2 affibody conjugate had toxic effect on treated malignant cells but at a lower level compared to GNP. X-ray radiation therapy of the cells treated with GNP resulted in diminished viability of all treated cancerous cells. On the other hand, X-ray radiation in combination with GNP-ZHER2 affibody conjugate significantly reduced viability of the malignant cells with higher expression level of HER2. Conclusion: Our obtained in vitro results indicated that GNP-ZHER2 affibody conjugate could be successfully employed as radiosensitizer for specific treatment of malignant cell lines with high expression of HER2 receptors.
کلیدواژه ها:
نویسندگان
Aminollah Pourshohod
Department of Biochemistry, Medical School, Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Mostafa Jamalan
Abadan School of Medical Sciences, Abadan, Iran
Majid Zeinali
Biotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Alireza khairollah
Department of Biochemistry, Medical School, Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran