C. L. Silva

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  • C L Silva
  • Brazilian journal of medical and biological…
  • 1985
Mycobacterium bovis (BCG) was submitted to lipid extraction involving gentle and drastic procedures. Neutral lipids, glycolipids as well as phospholipids were detected in the diethyl ether extract, whereas the chloroform and chloroform-methanol extracts contained mainly phospholipids. Arabinose mycolates, which represent firmly bound cell wall lipids, were(More)
  • C L Silva
  • Brazilian journal of medical and biological…
  • 1995
It has proved difficult to vaccinate effectively against tuberculosis with mycobacterial components or even with whole dead mycobacteria; protection was always inferior to that obtained with the live attenuated vaccine known as bacillus Calmette-Guérin (BCG). We have found that this may no longer be the case. Expression of the gene for a single(More)
In DNA vaccines, the gene of interest is cloned into a bacterial plasmid that is engineered to induce protein production for long periods in eukaryotic cells. Previous research has shown that the intramuscular immunization of BALB/c mice with a naked plasmid DNA fragment encoding the Mycobacterium leprae 65-kDa heat-shock protein (pcDNA3-Hsp65) induces(More)
In the last several years, the use of dendritic cells has been studied as a therapeutic strategy against tumors. Dendritic cells can be pulsed with peptides or full-length protein, or they can be transfected with DNA or RNA. However, comparative studies suggest that transfecting dendritic cells with messenger RNA (mRNA) is superior to other antigen-loading(More)
  • C L Silva
  • Brazilian journal of medical and biological…
  • 1989
Trehalose dimycolate, a mycobacterial glycolipid also known as cord factor, retains some of the antitumor properties of the intact BCG. Murine macrophages incubated in vitro in the presence of trehalose dimycolate for 20 h at 37 degrees C released a factor which was cytotoxic for the L929 tumor cell line. Anti-tumor necrosis factor (TNF) blocked the(More)
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