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An endoplasmic reticulum-like membrane fraction, termed the "mitochondria-associated membrane" (MAM), that co-isolates with mitochondria from rat liver has been characterized. One potential function of the MAM is as a membrane bridge between the endoplasmic reticulum and mitochondria that may be involved in transfer of phospholipids between these two(More)
Recombinant adenovirus-associated vector serotype 2 (rAAV2) is one of the most promising gene transfer vectors due to its advantage of causing non-pathogenic infection, low immunogenicity, and long-term gene expression in human clinical trials. Human interleukin 15 (hIL15) has been implicated in modulation of antitumor activity of lymphokine-activated(More)
We have investigated the cell death of a Chinese hamster ovary mutant (MT-58) with a thermo-sensitive CTP:phosphocholine cytidylyltransferase, the rate-limiting enzyme of the CDP-choline pathway for phosphatidylcholine biosynthesis (Esko, J. D., Wermuth, M. M., and Raetz, C. R. H. (1981) J. Biol. Chem. 256, 7388-7393). After MT-58 cells were shifted to the(More)
Myostatin belongs to the transforming growth factor (TGF)-beta superfamily and is a potent negative regulator of skeletal muscle development and growth. We utilized microinjection of an antisense RNA-expressing vector to establish a hereditarily stable myostatin gene knockdown zebrafish strain with a double-muscle phenotype. Real-time PCR and immunostaining(More)
Some freshwater (FW) teleosts are capable of acclimating to seawater (SW) when challenged; however, the related energetic and physiological consequences are still unclear. This study was conducted to examine the changes in expression of gill Na(+)-K(+)-ATPase and creatine kinase (CK) in tilapia (Oreochromis mossambicus) as the acute responses to transfer(More)
Phosphatidylethanolamine N-methyltransferase catalyzes the synthesis of phosphatidylcholine from phosphatidylethanolamine and is most active in liver. A cDNA for this enzyme from a rat liver cDNA library has been cloned, sequenced, and expressed in COS-1 cells, McArdle-RH7777 rat hepatoma cells, and Sf9 insect cells. The expressed protein was capable of(More)
RC-RNase exerts anti-cancer effects on many tumors. However, the mechanisms by which RC-RNase induces cytotoxicity in different tumor cells are unclear. Currently, estrogen receptor (ER)-positive and negative breast tumors are treated with RC-RNase. Our data demonstrate that RC-RNase induces cell death on ER-positive but not on ER-negative breast tumors.(More)
The unfolded protein response (UPR) is a conserved and adaptive cellular response to increase cell survival during ER stress. XBP-1 spliced form (XBP-1S) generated by IRE1 endoribonuclease is a key transcriptional regulator in UPR to activate genes involved in protein folding and degradation to restore ER function. Although Akt activation was suggested to(More)
Many studies have indicated that differentiated cells inhibit drug-induced cytotoxicity but undifferentiated cells do not, though the mechanisms are unclear. Currently, HL-60 cells are induced to differentiate into macrophage-like cells with Phorbol-12-myristate-13-acetate (TPA) treatment (TPA-differentiated cells). Our study shows that(More)
CTP:phosphocholine cytidylyltransferase (CT) has recently been reported to be a predominantly intranuclear enzyme in several cell lines (Wang et al., J. Biol. Chem. 268, 5899-5904 (1993)). This contrasts with previous reports that CT was a cytosolic protein that translocated to the endoplasmic reticulum upon activation. The aim of the present study was to(More)