Cisplatin resistance driver claspin is a target for immunotherapy in urothelial carcinoma

Cisplatin resistance driver claspin is a target for immunotherapy in urothelial carcinoma
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顺铂耐药驱动程序 claspin 是尿路上皮癌免疫治疗的靶点

DOI:
10.1007/s00262-023-03388-5
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发表时间:
2023
影响因子:
5.8
通讯作者:
Torigoe T.
Torigoe T.
中科院分区:
医学3区
文献类型:
--
作者:
Yamada S;Miyata H;Isono M;Hori K;Yanagawa J;Murai A;Minowa T;Mizue Y;Sasaki K;Murata K;Tokita S;Nakatsugawa M;Iwabuchi S;Hashimoto S;Kubo T;Kanaseki T;Tsukahara T;Abe T;Shinohara N;Hirohashi Y;Torigoe T.

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膀胱癌是一种重要的泌尿外科疾病。顺铂是治疗膀胱癌的关键药物,特别是在肌肉浸润性病例中。在大多数膀胱癌病例中,顺铂是有效的;然而,对顺铂的耐药性对预后有显著的负面影响。因此,顺铂耐药膀胱癌的治疗策略对于改善预后至关重要。在本研究中,我们使用尿路上皮癌细胞系(UM-UC-3和J82)建立了顺铂耐药(CR)膀胱癌细胞系。我们在CR细胞中筛选了潜在的靶点,发现claspin(CLSPN)过表达,CLSPN mRNA敲低表明CLSPN在CR细胞顺铂耐药中起作用。在我们以前的研究中,我们通过HLA配体组分析鉴定了人类白细胞抗原(HLA)-A*02:01限制性CLSPN肽。因此,我们产生了aCLSPN肽特异性细胞毒性T淋巴细胞克隆,其识别CR细胞的水平高于野生型UM-UC-3细胞。这些发现表明CLSPN是顺铂耐药的驱动因素,CLSPN肽特异性免疫治疗可能对顺铂耐药病例有效。
Bladder cancer is a major and fatal urological disease. Cisplatin is a key drug for the treatment of bladder cancer, especially in muscle-invasive cases. In most cases of bladder cancer, cisplatin is effective; however, resistance to cisplatin has a significant negative impact on prognosis. Thus, a treatment strategy for cisplatin-resistant bladder cancer is essential to improve the prognosis. In this study, we established a cisplatin-resistant (CR) bladder cancer cell line using an urothelial carcinoma cell lines (UM-UC-3 and J82). We screened for potential targets in CR cells and found that claspin (CLSPN) was overexpressed.CLSPNmRNA knockdown revealed thatCLSPNhad a role in cisplatin resistance in CR cells. In our previous study, we identified human leukocyte antigen (HLA)-A*02:01-restrictedCLSPNpeptide by HLA ligandome analysis. Thus, we generated aCLSPNpeptide-specific cytotoxic T lymphocyte clone that recognized CR cells at a higher level than wild-type UM-UC-3 cells. These findings indicate thatCLSPNis a driver of cisplatin resistance andCLSPNpeptide-specific immunotherapy may be effective for cisplatin-resistant cases.
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