Neuron-Derived Mitochondria Support Metastatic Cancer Behavior [May. 19, 2026]

Nerve-to-cancer transfer of mitochondria during cancer metastasis (Nature, 2025)
Summary: 
This study investigated whether cancer-associated neurons can directly fuel cancer metabolism. Using coculture systems, mitochondrial transfer reporters, denervation models, and in vivo fate mapping, the authors demonstrated that neuron-derived mitochondria enhance cancer cell bioenergetics and stress resistance. Mitochondria-recipient cancer cells or their progeny were more frequently detected at metastatic sites, suggesting improved survival during metastatic stress.

Highlighted technique:
To evaluate whether neuron-derived mitochondria improve energetic and redox stress adaptation in cancer cells, the authors identified mitochondrial transfer using a newly developed genetic reporter and isolated the corresponding 4T1 cell populations by flow cytometry. Mitochondria-recipient cells showed increased total ATP, higher GSH, improved GSH/GSSG ratios, and reduced susceptibility to H2O2-induced cell death.

A mitochondrial staining reagent is available that enables continuous labeling for up to 7 days, making it useful for long-term tracking. Mitochondrial function and cellular redox status can be evaluated using parameters such as intracellular ATP, mitochondrial ROS and GSSG/GSH.

Mitochondrial transfer from Adipose stem cells to breast cancer cells drives multi-drug resistance (Journal of Experimental & Clinical Cancer Research, 2024)
Summary: 
This study showed that adipose stem cells transfer mitochondria to breast cancer cells, thereby enhancing ATP production and upregulating ABC transporter-mediated drug efflux. As a result, breast cancer cells exhibited reduced intracellular drug accumulation, leading to increased resistance to chemotherapeutic agents such as doxorubicin, cisplatin, and docetaxel.

Highlighted technique:
To test whether ASC-derived mitochondria enhance ATP availability for ABC transporter-mediated drug efflux, isolated ASC-derived mitochondria were introduced into breast cancer cells. Seahorse OCR analysis measured mitochondrial respiration and ATP production, while intracellular doxorubicin accumulation was evaluated by its fluorescence intensity.

There is an OCR plate-assay kit that requires fewer cells and offers lower running costs. It can also be used for preliminary evaluation prior to Seahorse analysis. The mitochondrial isolation kit enables fractionation of intact mitochondria from tissue in approximately two hours.