The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.
Cancer Med. 2023 Apr;12(7):8452-8463. doi: 10.1002/cam4.5585. Epub 2023 Feb 11.
Osteosarcoma is the most malignant and common primary bone tumor with a high rate of recurrence that mainly occurs in children and young adults. Therefore, it is vital to facilitate the development of novel effective therapeutic means and improve the overall prognosis of osteosarcoma patients via a deeper understanding of the mechanisms of chemoresistance in osteosarcoma progression.
In this research, the relationship between ITGB3 and the clinical characteristics of patients was detected through analysis of publicly available clinical datasets. The expression of ITGB3 was analysis in collected human osteosarcoma tissues. In addition, the potential functions of ITGB3 in the cisplatin resistance of osteosarcoma cells were investigated in vitro and in tumor xenotransplantation. Finally, the molecular mechanism of ITGB3 in the progression and recurrence of osteosarcoma were explored via transcriptome analysis.
ITGB3 was identified as a potential regulator of tumorigenicity and cisplatin resistance in relapsed osteosarcoma. Furthermore, the decreased osteosarcoma cell proliferation and migration ability in ITGB3 knockout osteosarcoma cells were related to increased apoptosis and slowing cell cycle progression. In addition, ITGB3 had a positive correlation with cisplatin resistance in cells and tumor xenografts in mice. Accordingly, ITGB3 performed the functions of proliferation and cisplatin resistance in osteosarcoma through the MAPK and VEGF signaling pathways.
Our results will contribute to a better understanding of the function and mechanism of ITGB3 in osteosarcoma cisplatin resistance and provide a novel therapeutic target to decrease cisplatin resistance and tumor recurrence in osteosarcoma patients.
骨肉瘤是最恶性和最常见的原发性骨肿瘤,其复发率高,主要发生在儿童和青少年。因此,深入了解骨肉瘤进展中化疗耐药的机制,对于开发新的有效治疗手段和改善骨肉瘤患者的整体预后至关重要。
在这项研究中,通过分析公共可用的临床数据集,检测了 ITGB3 与患者临床特征之间的关系。分析了收集的人骨肉瘤组织中 ITGB3 的表达。此外,还在体外和肿瘤异种移植中研究了 ITGB3 对骨肉瘤细胞顺铂耐药性的潜在作用。最后,通过转录组分析探讨了 ITGB3 在骨肉瘤进展和复发中的分子机制。
ITGB3 被鉴定为复发性骨肉瘤中肿瘤发生和顺铂耐药的潜在调节剂。此外,ITGB3 敲除骨肉瘤细胞中的增殖和迁移能力下降与凋亡增加和细胞周期进程减缓有关。此外,ITGB3 与细胞和顺铂耐药性以及小鼠肿瘤异种移植中的顺铂耐药性呈正相关。因此,ITGB3 通过 MAPK 和 VEGF 信号通路在骨肉瘤中发挥增殖和顺铂耐药的功能。
我们的研究结果将有助于更好地理解 ITGB3 在骨肉瘤顺铂耐药中的功能和机制,并为降低骨肉瘤患者的顺铂耐药性和肿瘤复发提供新的治疗靶点。