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亚油酸酯-帕唑帕尼缀合物作为活性药物成分抑制肝细胞癌生长。

Linoleate-pazopanib conjugation as active pharmacological ingredient to abolish hepatocellular carcinoma growth.

作者信息

Wang Ke, Liao Pei-Yin, Chang Wei-Chun, Yang Cian-Ru, Su Yu-Ting, Wu Ping-Ching, Wu Yang-Chang, Hung Yao-Ching, Akhtar Najim, Lai Hsueh-Chou, Ma Wen-Lung

机构信息

Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan.

Department of Medical Research, Chinese Medicine Research and Development Center, and Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan.

出版信息

Front Pharmacol. 2024 Jan 16;14:1281067. doi: 10.3389/fphar.2023.1281067. eCollection 2023.

Abstract

Small molecule compounds targeting multiple kinases involved in neoangiogenesis have shown survival benefits in patients with unresectable hepatocellular carcinoma (HCC). Nonetheless, despite the beneficial effects of multikinase inhibitors (MKIs), a lack of boosting adjuvant limits their objective response rate. Lipid conjugates have been used to improve delivery efficacy or pharmaceutical benefits for decades. However, the feasibility of utilizing lipid-drug conjugates (LDCs) in HCC regimens remains untested. In this study, oral feeding of linoleate-fluorescein isothiocyanate conjugates showed that the compound was well distributed in a spontaneous HCC mouse model. Therefore, a rationale design was developed for chemically synthesizing a linoleate-pazopanib conjugate (LAPC). The LAPC showed a significantly improved cytotoxicity compared to the parental drug pazopanib. Pazopanib's angiogenic suppressing signals were not observed in LAPC-treated HCC cells, potentially suggesting an altered mechanism of action (MOA). In an efficacy trial comparing placebo, oral pazopanib, and LAPC treatments in the hepatitis B virus transgene-related spontaneous HCC mouse model (HBVtg-HCC), the LAPC treatment demonstrated superior tumor ablating capacity in comparison to both placebo and pazopanib treatments, without any discernible systemic toxicity. The LAPC exposure is associated with an apoptosis marker (Terminal deoxynucleotidyl transferase dUTP nick end labeling [TUNEL]) and an enhanced ferroptosis (glutathione peroxidase 4 [GPX4]) potential in HBVtg-HCC tumors. Therefore, the LAPC showed excellent HCC ablative efficacy with altered MOA. The molecular mechanisms of the LAPC and LDCs for HCC therapeutics are of great academic interest. Further comprehensive preclinical trials (e.g., chemical-manufacture-control, toxicity, distribution, and pharmacokinetics/pharmacodynamics) are expected.

摘要

靶向参与新生血管生成的多种激酶的小分子化合物已在不可切除肝细胞癌(HCC)患者中显示出生存益处。尽管如此,尽管多激酶抑制剂(MKIs)有有益效果,但缺乏增强佐剂限制了它们的客观缓解率。脂质缀合物已被用于提高递送效果或药物益处数十年。然而,在HCC治疗方案中使用脂质-药物缀合物(LDCs)的可行性仍未得到检验。在本研究中,口服亚油酸酯-异硫氰酸荧光素缀合物表明该化合物在自发性HCC小鼠模型中分布良好。因此,开发了一种合理的设计用于化学合成亚油酸酯-帕唑帕尼缀合物(LAPC)。与亲本药物帕唑帕尼相比,LAPC显示出显著提高的细胞毒性。在LAPC处理的HCC细胞中未观察到帕唑帕尼的血管生成抑制信号,这可能表明作用机制(MOA)发生了改变。在一项比较安慰剂、口服帕唑帕尼和LAPC治疗在乙型肝炎病毒转基因相关自发性HCC小鼠模型(HBVtg-HCC)中的疗效试验中,与安慰剂和帕唑帕尼治疗相比,LAPC治疗显示出卓越的肿瘤消融能力,且没有任何可察觉的全身毒性。LAPC暴露与HBVtg-HCC肿瘤中的凋亡标志物(末端脱氧核苷酸转移酶dUTP缺口末端标记[TUNEL])和增强的铁死亡(谷胱甘肽过氧化物酶4[GPX4])潜力相关。因此,LAPC显示出具有改变的MOA的卓越HCC消融疗效。LAPC和LDCs用于HCC治疗的分子机制具有重大的学术意义。预计将进行进一步全面的临床前试验(例如化学-制造-控制、毒性、分布和药代动力学/药效学)。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/849b/10824963/05e5dd4066ee/fphar-14-1281067-g001.jpg

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