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Rous sarcoma virus (RSV) stimulates in quail embryo neuro-retina (NR) cultures the specific activity of glutamic acid decarboxylase (GAD), the enzyme responsible for the synthesis of gamma-aminobutyric acid, a major inhibitory neurotransmitter in NR and in central nervous system. In quail embryo NR
OBJECTIVE
Histological grading is currently one of the best predictors of tumor behavior and outcome in soft tissue sarcoma. However, occasionally there is significant disagreement even among expert pathologists. An alternative method that gives more reliable and non-subjective diagnostic
2-Amino-6-methyldipyrido[1,2-a:3',2'-d]limidazole, a potent bacterial mutagen from glutamic acid pyrolysate, when given to male CDF1 mice at a concentration of 0.05% in the diet induced blood vessel tumors characterized histopathologically. These hemangioendothelial sarcomas showed positive alkaline
We have investigated the specificity of the proteolytic cleavage of the Rous sarcoma virus glycoprotein precursor by introducing two mutations into the putative cleavage region (Arg-Arg-Lys-Arg). We show that neither a deletion of the cleavage sequence nor a glutamic acid for lysine substitution
Recently, many studies have focused on biomedical and pharmaceutical applications of self-assembled nanoparticles. In addition, several biodegradable nanoparticles have been reported to possess poor dispersion stability and poor size-controllability. However, these nanoparticles require complicated
Kaposi sarcoma Herpes virus (KSHV), also known as human Herpes virus 8 (HHV8), can persist as episome in target cells. The latency-associated nuclear antigen 1 (LANA-1) is a key component of the latency process, and may be a functional equivalent of the EBNA-1 protein of Epstein-Barr virus. EBNA-1
We examined the antitumor effects of two antifolate inhibitors of thymidylate synthesis, N-(5-[N-(3, 4-dihydro-2-methyl-4-oxoquinazolin-6-ylmethyl)-N-methylamino ]-2-theno yl-L-glutamic acid (D1694; Tomudex) and 1843U89 as well as a folate-based inhibitor of purine synthesis, 5,
S1, a heterophile antigen present on human sarcoma cell lines in culture, has been previously defined by this laboratory [1,2]. This antigen is also present in guinea-pig kidney. Purification of the antigen to homogeneity has now been achieved by a combination of ammonium sulfate fractionation,
The nature of the lesions involved in producing the fusiform phenotype of three mutants (WO101, WO201, and tsST529) of the Schmidt-Ruppin A strain of Rous sarcoma virus (RSV) was determined by molecular cloning and DNA sequencing. WO101 and WO201 contained an in-frame deletion of the v-src region
Twenty feline neoplasms were sequenced in the region from exons 5 to 8 for the presence of tumour suppressor gene p53 mutations. In a spindle cell sarcoma of the bladder, a missense mutation (codon 164 AAG-->GAG, lysine-->glutamic acid) in exon 5 was detected. In a pleomorphic sarcoma, a 23 bp
The p53 tumor suppressor gene is one of the most frequently altered genes in human malignancies. To explore the implication of p53 alteration in Ewing's sarcoma, we analyzed the deletion and sequence alterations of p53 and abnormal amplification of MDM2, which acts as a functional inhibitor of p53,
Herpesvirus saimiri (HVS) establishes a persistent infection in squirrel monkeys by maintaining its episome within T lymphocytes. The product of open reading frame 73 (ORF73) plays a key role in episomal maintenance and is the functional homologue of Epstein-Barr virus EBNA1 and Kaposi's
Kaposi's sarcoma-associated herpesvirus (KSHV) evades host defenses through tight suppression of autophagy by targeting each step of its signal transduction: by viral Bcl-2 (vBcl-2) in vesicle nucleation, by viral FLIP (vFLIP) in vesicle elongation, and by K7 in vesicle maturation. By exploring the