Abstract：
:Antiangiogenic drugs are used clinically for treatment of renal cell carcinoma (RCC) as a standard first-line treatment. Nevertheless, these agents primarily serve to stabilize disease, and resistance eventually develops concomitant with progression. Here, we implicate metabolic symbiosis between tumor cells distal and proximal to remaining vessels as a mechanism of resistance to antiangiogenic therapies in patient-derived RCC orthoxenograft (PDX) models and in clinical samples. This metabolic patterning is regulated by the mTOR pathway, and its inhibition effectively blocks metabolic symbiosis in PDX models. Clinically, patients treated with antiangiogenics consistently present with histologic signatures of metabolic symbiosis that are exacerbated in resistant tumors. Furthermore, the mTOR pathway is also associated in clinical samples, and its inhibition eliminates symbiotic patterning in patient samples. Overall, these data support a mechanism of resistance to antiangiogenics involving metabolic compartmentalization of tumor cells that can be inhibited by mTOR-targeted drugs.
journal_name
Cell Repjournal_title
Cell reportsauthors
Jiménez-Valerio G,Martínez-Lozano M,Bassani N,Vidal A,Ochoa-de-Olza M,Suárez C,García-Del-Muro X,Carles J,Viñals F,Graupera M,Indraccolo S,Casanovas Odoi
10.1016/j.celrep.2016.04.015subject
Has Abstractpub_date
2016-05-10 00:00:00pages
1134-43issue
6issn
2211-1247pii
S2211-1247(16)30428-4journal_volume
15pub_type
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