Cancer metabolism, stemness and tumor recurrence: MCT1 and MCT4 are functional biomarkers of metabolic symbiosis in head and neck cancer. - PubMed - NCBI

https://www.ncbi.nlm.nih.gov/pubmed/23574725/

We propose that oxidative stress is a key hallmark of tumor tissues that drives high-energy metabolism in adjacent proliferating
mitochondrial-rich cancer cells, via the paracrine transfer of mitochondrial fuels (such as L-lactate and ketone bodies).