Leukemia inhibitory factor inhibits the proliferation of primary rat astrocytes induced by oxygen-glucose deprivation

• Autorzy: Fan Y.-Y. , Zhang J.-M. , Wang H. , Liu X.-Y. , Yang F.-H.
• Języki publikacji: EN

Abstrakty

EN

Leukemia inhibitory factor (LIF) is a neuroprotective cytokine that is necessary for the normal development of astrocytes. Oxygen-glucose deprivation (OGD) can induce astrocyte proliferation by increasing hypoxia-inducible factor alpha (HIF- 1a) and vascular endothelial growth factor (VEGF). Here, we studied whether LIF affects the proliferation of cultured primary rat astrocytes under OGD conditions by measuring EdU incorporation into astrocyte DNA and the expression of proliferating cell nuclear antigen (PCNA) mRNA and protein. Our findings show that low concentrations of LIF (5 and 10 ng/mL) significantly decreased EdU incorporation and downregulated the expression of PCNA mRNA and PCNA protein in astrocytes subjected to OGD. A low concentration of LIF (10 ng/mL) clearly inhibited astrocyte proliferation induced by OGD, while a higher concentration (50 ng/mL) had no effect. To investigate the mechanism of this inhibition by LIF (10 ng/ mL), the expression of 3 related genes (LIF receptor, HIF-1a, and VEGF) was assessed using real-time PCR; VEGF protein expression was measured by Western blot. Our results indicate that LIFR mRNA was downregulated in astrocytes subjected to OGD. Interestingly, treatment with LIF further reduced LIFR mRNA expression in these cells. LIF treatment also decreased the expression of HIF-1a mRNA, VEGF mRNA, and VEGF protein induced by OGD. Low concentrations of LIF were observed to inhibit astrocyte proliferation induced by OGD.

Słowa kluczowe

EN

leukemia; inhibitory factor; proliferation; astrocyte; rat; oxygen glucose deprivation; nervous system; neuroprotection; cytokine; vascular endothelial growth factor

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2013
• Tom: 73
• Numer: 4
• Opis fizyczny: p.485-494,fig.,ref.

Twórcy

autor

Fan Y.-Y.

• Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang, China

autor

Zhang J.-M.

• Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang, China

autor

Wang H.

• Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang, China

autor

Liu X.-Y.

• Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang, China

autor

Yang F.-H.

• Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang, China

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