Elesclomol(STA-4783,AbMole,M2083)是一種線粒體靶向小分子化合物,核心機制在于作為銅離子載體(Cu²⁺ ionophore),與外源銅離子形成復(fù)合物(Elesclomol-Cu),將銅高效轉(zhuǎn)運至線粒體基質(zhì),觸發(fā)銅依賴性細胞死亡--銅死亡(Cuproptosis)。上述過程依賴于線粒體還原酶FDX1,導(dǎo)致脂;鞍祝ㄈ鏒LAT、DLST)異常聚集、線粒體呼吸鏈功能障礙、活性氧(ROS)爆發(fā)性累積及ATP耗竭;同時可協(xié)同誘導(dǎo)凋亡(表現(xiàn)為Caspase-3/9活化、細胞色素c釋放)或鐵死亡(如在結(jié)直腸癌模型中通過ATP7A降解,加劇氧化應(yīng)激,誘導(dǎo)鐵死亡)。在細胞實驗中,Elesclomol(STA-4783,AbMole,M2083)單用效果有限,常需聯(lián)合銅源(如CuCl₂)[1]。
Elesclomol(STA-4783,AbMole,M2083)在KRAS突變?nèi)朔伟〢549與Calu-1細胞中可抑制遷移并降低p-Erk水平[2];Elesclomol(STA-4783)還在結(jié)直腸癌HCT116、LoVo細胞及癌癥干細胞模型中,聯(lián)合CuCl₂ 處理后顯著抑制克隆形成、降低鐵硫簇蛋白并促進DLAT脂酰化累積;在肝癌HepG2/PLC/PRF/5細胞中,1–10 μM的 Elesclomol-Cu劑量依賴性抑制增殖,伴隨FDX1上調(diào)與DLAT寡聚化,且可被銅螯合劑Ammonium tetrathiomolybdate(TTM)逆轉(zhuǎn)。動物實驗方面,在裸鼠皮下移植A549異種移植模型中,Elesclomol與Genipin 聯(lián)用顯著抑制腫瘤生長(P=0.008);Elesclomol(CAS No.:488832-69-5)在C57BL/6小鼠膠質(zhì)母細胞瘤原位模型中,聯(lián)合Temozolomide(TMZ,NSC 362856) 增強抑瘤效果[3];在Menkes病模型(mottled-brindled小鼠)中,Elesclomol遞送銅離子至腦線粒體,提升細胞色素c氧化酶水平并改善神經(jīng)退行性表型[4]。
參考文獻及鳴謝
[1] Yu, J.; Peng, Y.; Wang, K.; et al. The combination of elesclomol and Cu2+ can inhibit the growth of colon cancer cells by targeting FDX1. 2023.
[2] Albayrak, G.; Korkmaz, F. D.; Tozcu, D.; et al. The outcomes of an impaired powerhouse in KRAS mutant lung adenocarcinoma cells by Elesclomol.
Journal of cellular biochemistry 2019,
120 (6), 10564-10571.
[3] Buccarelli, M.; D'Alessandris, Q. G.; Matarrese, P.; et al. Elesclomol-induced increase of mitochondrial reactive oxygen species impairs glioblastoma stem-like cell survival and tumor growth.
Journal of experimental & clinical cancer research : CR 2021,
40 (1), 228.
[4] Feng, Y.; Wu, J. J.; Sun, Z. L.; et al. Targeted apoptosis of myofibroblasts by elesclomol inhibits hypertrophic scar formation.
EBioMedicine 2020,
54, 102715.
細胞實驗參考
細胞系:AML cell
方法:Cells from each group were diluted to 5 × 104 cells/mL and 100 μL of cell suspension was added to a 96-well plate (control group: RPMI-1640 medium containing 40 nM Elesclomol (a copper ion inducer); experimental group: RPMI-1640 medium containing 40 nM Elesclomol and CuCl₂). The plate was pre-incubated in a cell culture incubator for 24 h (37 °C, 5% CO₂). Afterward, 10 μL of CCK-8 solution was added to each well, and the plate was incubated for an additional 2 h. Absorbance at 450 nm was measured using a microplate reader.
濃度:40 nM
處理時間:24 h.
參考文獻:Discov Oncol. 2025 Jun 10;16(1):1044.
* 上述方法來自公開文獻,僅供相同目的實驗參考。如實驗?zāi)康、材料、方法不同,請參考其他文獻。
動物實驗參考
動物模型:BALB/c nude mice
配制:PBS
劑量:10 mg/kg
給藥處理:intraperitoneally administered
參考文獻:Front Oncol. 2025 Jun 24;15:1584811.
* 上述方法來自公開文獻,僅供相同目的實驗參考。如實驗?zāi)康、材料、方法不同,請參考其他文獻。
體內(nèi)實驗的工作液,建議現(xiàn)用現(xiàn)配,當(dāng)天使用;如在配制過程中出現(xiàn)沉淀、析出現(xiàn)象,可以通過超聲和(或)加熱的方式助溶。
切勿一次性將產(chǎn)品全部溶解。
建議制定動物給藥及實驗方案時,盡量參考已發(fā)表的相關(guān)實驗文獻(溶劑種類及配比眾多,簡單地溶解目的化合物,并不能解決動物給藥依從性、體內(nèi)生物利用度、組織分布等相關(guān)問題,未必能保證目的化合物在動物體內(nèi)充分發(fā)揮生物學(xué)效用)。