[Changes of thioredoxin mRNA level in neurons insulted by sodium azide].

Oxidative stress has been considered to be associated with many neurodegenerative diseases, while mitochondrial damage is one of the important reasons that aggravate oxidative stress. Sodium azide (NaN3) is a specific inhibitor of mitochondrial cytochrome c oxidase (COX), which can be used to mimic neuronal damage induced by mitochondrial deficiency. In this experiment, the neurotoxic effects of NaN3 on cultured primary neurons were detected by means of cell viability measurement (MTT assay) and morphological observation, and an in vitro model of neuronal injury induced by NaN3 were established.

[Changes of thioredoxin mRNA level in neurons with mitochondrial dysfunction insulted by H2O2].

Oxidative stress and mitochondrial deficiency have been considered to be associated with the mechanisms of many neurodegenerative diseases. Sodium azide (NaN3) is a special inhibitor of mitochondrion cytochrome c oxidase (COX), which can be used to mimic neuronal damage induced by mitochondrial deficiency. In this experiment, the neurotoxic effects of H2O2 on primary cultured neurons and NaN3-induced mitochondrial dysfunctional neurons were detected by means of cell viability measurement (MTT) and analyzed through morphological observation.

[Expression of HBcAg in eukaryotic cells by retroviral vector mediated gene transfer].

Background: To construct recombinant retroviral vector expressing HBcAg in eukaryotic cells.

Methods: The HBV core gene fragment was amplified by using PCR from pADR which contains complement nucleotide sequence of HBV subtype adr and cloned into retroviral expression plasmid pLXSN, then transfected into packing cell (PT67) with lipofec AMINE. After 2-3 weeks selection with G418, large colonies were isolated and transferred to individual plates.

Generation of cytotoxic T cell against HBcAg using retrovirally transduced dendritic cells.

Aim: Cytotoxic T lymphocytes (CTLs) play an important role in resolving HBV infection. In the present study, we attempted to evaluate the efficiency of bone marrow-derived dendritic cells (DCs) transduced with recombinant retroviral vector bearing hepatitis B virus (HBV) core gene and the capability of generating CTLs against HBcAg by genetically modified DCs in vivo.

Methods: A retroviral vector containing HBV core gene was constructed.

cDNA sequence of porcine thioredoxin.

Several mammalian thioredoxin cDNA sequences, namely that of human, macaca, ovine, bovine, equine and murine have been already registered in the Genbank database; but that of porcine is still not known. In this communication, we report the full-length cDNA sequence of porcine thioredoxin as determined by RT-PCR method. We also compared the protein sequence of thioredoxin from various mammals.