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Metabolic reprogramming of acute lymphoblastic leukemia cells in response to glucocorticoid treatment.
Dyczynski, Matheus; Vesterlund, Mattias; Björklund, Ann-Charlotte; Zachariadis, Vasilios; Janssen, Jerry; Gallart-Ayala, Hector; Daskalaki, Evangelia; Wheelock, Craig E; Lehtiö, Janne; Grandér, Dan; Tamm, Katja Pokrovskaja; Nilsson, Roland.
Afiliación
  • Dyczynski M; Department of Oncology-Pathology, Cancer Centre Karolinska, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden.
  • Vesterlund M; Department of Oncology-Pathology, Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden.
  • Björklund AC; Department of Oncology-Pathology, Cancer Centre Karolinska, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden.
  • Zachariadis V; Department of Oncology-Pathology, Cancer Centre Karolinska, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden.
  • Janssen J; Department of Oncology-Pathology, Cancer Centre Karolinska, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden.
  • Gallart-Ayala H; Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17177, Stockholm, Sweden.
  • Daskalaki E; Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17177, Stockholm, Sweden.
  • Wheelock CE; Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17177, Stockholm, Sweden.
  • Lehtiö J; Department of Oncology-Pathology, Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden.
  • Grandér D; Department of Oncology-Pathology, Cancer Centre Karolinska, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden.
  • Tamm KP; Department of Oncology-Pathology, Cancer Centre Karolinska, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden. katja.pokrovskaja@ki.se.
  • Nilsson R; Cardiovascular Medicine Unit, Department of Medicine, Karolinska Institutet, SE-171 76, Stockholm, Sweden. roland.nilsson@ki.se.
Cell Death Dis ; 9(9): 846, 2018 08 28.
Article en En | MEDLINE | ID: mdl-30154400
ABSTRACT
Glucocorticoids (GCs) are metabolic hormones with immunosuppressive effects that have proven effective drugs against childhood acute lymphoblastic leukemia (ALL). Yet, the role of metabolic reprogramming in GC-induced ALL cell death is poorly understood. GCs efficiently block glucose uptake and metabolism in ALL cells, but this does not fully explain the observed induction of autophagy and cell death. Here, we have performed parallel time-course proteomics, metabolomics, and isotope-tracing studies to examine in detail the metabolic effects of GCs on ALL cells. We observed metabolic events associated with growth arrest, autophagy, and catabolism prior to onset of apoptosis nucleotide de novo synthesis was reduced, while certain nucleobases accumulated; polyamine synthesis was inhibited; and phosphatidylcholine synthesis was induced. GCs suppressed not only glycolysis but also entry of both glucose and glutamine into the TCA cycle. In contrast, expression of glutamine-ammonia ligase (GLUL) and cellular glutamine content was robustly increased by GC treatment, suggesting induction of glutamine synthesis, similar to nutrient-starved muscle. Modulating medium glutamine and dimethyl-α-ketoglutarate (dm-αkg) to favor glutamine synthesis reduced autophagosome content of ALL cells, and dm-αkg also rescued cell viability. These data suggest that glutamine synthesis affects autophagy and possibly onset of cell death in response to GCs, which should be further explored to understand mechanism of action and possible sources of resistance.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Contexto en salud: 2_ODS3 / 6_ODS3_enfermedades_notrasmisibles / 7_ODS3_muertes_prevenibles_nacidos_ninos Problema de salud: 2_muertes_prevenibles / 6_leukemia / 7_nutrition Asunto principal: Leucemia-Linfoma Linfoblástico de Células Precursoras / Glucocorticoides Límite: Humans Idioma: En Revista: Cell Death Dis Año: 2018 Tipo del documento: Article País de afiliación: Suecia

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Contexto en salud: 2_ODS3 / 6_ODS3_enfermedades_notrasmisibles / 7_ODS3_muertes_prevenibles_nacidos_ninos Problema de salud: 2_muertes_prevenibles / 6_leukemia / 7_nutrition Asunto principal: Leucemia-Linfoma Linfoblástico de Células Precursoras / Glucocorticoides Límite: Humans Idioma: En Revista: Cell Death Dis Año: 2018 Tipo del documento: Article País de afiliación: Suecia
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