Neurons Release Serine to Support mRNA Translation in Pancreatic Cancer.
Cell
; 183(5): 1202-1218.e25, 2020 11 25.
Article
en En
| MEDLINE
| ID: mdl-33142117
ABSTRACT
Pancreatic ductal adenocarcinoma (PDAC) tumors have a nutrient-poor, desmoplastic, and highly innervated tumor microenvironment. Although neurons can release stimulatory factors to accelerate PDAC tumorigenesis, the metabolic contribution of peripheral axons has not been explored. We found that peripheral axons release serine (Ser) to support the growth of exogenous Ser (exSer)-dependent PDAC cells during Ser/Gly (glycine) deprivation. Ser deprivation resulted in ribosomal stalling on two of the six Ser codons, TCC and TCT, and allowed the selective translation and secretion of nerve growth factor (NGF) by PDAC cells to promote tumor innervation. Consistent with this, exSer-dependent PDAC tumors grew slower and displayed enhanced innervation in mice on a Ser/Gly-free diet. Blockade of compensatory neuronal innervation using LOXO-101, a Trk-NGF inhibitor, further decreased PDAC tumor growth. Our data indicate that axonal-cancer metabolic crosstalk is a critical adaptation to support PDAC growth in nutrient poor environments.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Neoplasias Pancreáticas
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Serina
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Biosíntesis de Proteínas
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Neuronas
Límite:
Aged
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Animals
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Cell
Año:
2020
Tipo del documento:
Article
País de afiliación:
Estados Unidos