Gamitrinib TPP hexafluorophosphate is a Gamitrinib (GA) mitochondrial matrix inhibitor. Gamitrinib TPP hexafluorophosphate is a mitochondrial targeted HSP90 inhibitor with anti-cancer activity.

Gamitrinib TPP (Gamitrinib^TPP, G-TPP), a small molecule that combines the Hsp90 ATPase inhibitory module of 17-allylamino geldanamycin (17-AAG) with the mitochondrial-targeting moiety of triphenylphosphonium. Gamitrinib TPP is selectively delivered to mitochondria and does not affect Hsp90 homeostasis outside the organelle. Within a 16-hour exposure, concentrations of Gamitrinib TPP of 15-20 μM indistinguishably kill patient-derived and cultured glioblastoma cell lines. This cell death response has the hallmarks of mitochondrial apoptosis, with loss of organelle inner membrane potential, release of cytochrome c in the cytosol, activation of initiator caspase-9 and effector caspase-3 and caspase-7, and cellular reactivity for annexin V^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Whether the combination of TRAIL plus Gamitrinib TPP (Gamitrinib^TPP, G-TPP) has activity against glioblastoma in vivo is studied. Luciferase-expressing U87 glioblastoma cells implanted in the right cerebral striatum of immunocompromised mice give rise to rapidly growing tumors by bioluminescence imaging, and treatment of these mice with vehicle, stereotactic delivery of TRAIL, or systemic administration of suboptimal concentrations of Gamitrinib TPP does not affect tumor growth in vivo. Similarly, systemic monotherapy with Gamitrinib TPP at concentrations (20 mg/kg as daily i.p. injections) that inhibit subcutaneous xenograft tumor growth in mice has no effect on orthotopic glioblastoma growth. In contrast, 2 cycles of intracranial TRAIL combined with systemic Gamitrinib TPP suppresses the growth of established glioblastomas, with no significant animal weight loss throughout treatment^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

1036.03

C₅₂H₆₅F₆N₃O₈P₂

1131626-47-5

Room temperature in continental US; may vary elsewhere.

DMSO : 50 mg/mL (48.26 mM; Need ultrasonic)

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 2.5 mg/mL (2.41 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (2.41 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 5% DMSO    40% PEG300    5% Tween-80    50% saline

  Solubility: ≥ 2.5 mg/mL (2.41 mM); Clear solution
• 3.

  请依序添加每种溶剂： 5% DMSO    95% (20% SBE-β-CD in saline)

  Solubility: 2.5 mg/mL (2.41 mM); Suspended solution; Need ultrasonic

• [1]. Markus D. Siegelin, et al. Exploiting the mitochondrial unfolded protein response for cancer therapy in mice and human cells. J Clin Invest. 2011 Apr 1; 121(4): 1349–1360.

Human glioblastoma cell lines LN229 (p53 mutant; PTEN, WT), U87 (p53 WT; PTEN mutant), U251 (p53 mutant), prostate adenocarcinoma PC3, breast adenocarcinoma MCF-7, and human epithelial kidney (HEK) 293T are seeded in triplicate onto 96-well plates at 2×103 cells/well, treated with vehicle, Gamitrinib TPP (5, 10, 15, and 20 uM), or nontargeted 17-AAG ( 0-20 μM) for up to 24 h, and quantified for metabolic activity by a MTT colorimetric assay with absorbance at 405 nm. For determination of apoptosis, control or treated tumor cell types (1×10⁶) are labeled for annexin V and propidium iodide (PI) and analyzed by multiparametric flow cytometry. For Gamitrinib TPP-TRAIL combination studies, tumor cell types are simultaneously incubated with suboptimal concentrations of Gamitrinib TPP at 5 μM and TRAIL depending on the cell type at 100 ng/mL (U87), 20 ng/mL (U251), 40 ng/mL (PC3, MCF-7, FHAS), or 200 ng/mL (LN229), and analyzed after 16 h for cell viability by MTT^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Mice^[1]
U87 glioblastoma cells stably transfected with a luciferase expression plasmid (U87-Luc) are suspended in sterile PBS, pH 7.2, and stereotactically implanted (1×10⁵) in the right cerebral striatum of immunocompromised nude mice. Animals with established tumors are randomized in 4 groups (4 animals/group) and started on sterile vehicle (cremophor), TRAIL alone, Gamitrinib TPP alone, or the combination of TRAIL plus Gamitrinib TPP. In all animal groups, TRAIL is injected stereotactically in the right cerebral striatum (2 ng on days 7 and 10 after implantation), and Gamitrinib TPP is given systemically (10 mg/kg as daily i.p. injections on days 6, 7, 9, and 10 after implantation). Treatment is suspended on day 10 after tumor implantation, and tumor growth is assessed weekly by bioluminescence imaging after i.p injection of 110 mg/kg D-luciferin. In some experiments, nude mice carrying established U87-Luc intracranial glioblastomas are treated with systemic Gamitrinib TPP monotherapy at 20 mg/kg as daily i.p. injections and monitored for tumor growth by bioluminescence imaging. Animal survival is calculated per group^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Markus D. Siegelin, et al. Exploiting the mitochondrial unfolded protein response for cancer therapy in mice and human cells. J Clin Invest. 2011 Apr 1; 121(4): 1349–1360.