Helminth secretome adatbázis. Titkos helmint adatbázis


Immunoregulation[ edit ] Helminth proteins modulate the immune response of their hosts, but do not suppress it entirely.

helminth secretome adatbázis

A number of proteins are able to induce production of ILan anti-inflammatory cytokine. CD86 is one of the proteins which interact with CD28 to activate T helper cells ; without it, T helper cell response is mitigated.

Alpha-1, a protein released by schistosome eggs, can also be a chemokine binding protein, preventing the recruitment of other immune cells like neutrophils.

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A number of helminth species also secrete high levels of antioxidants to avoid phagocytosis ; those antioxidants are needed because phagocytes like macrophages frequently produce reactive oxygen species like oxygen megszabadulni az íjféregtőlsuperoxideand hydrogen peroxide to attack parasites. Additionally, many nematodes residing in the gut may secrete acetylcholinesterasewhich is responsible for the degradation of acetylcholine to terminate neuronal signals.

helminth secretome adatbázis

Acetylcholinesterase may prevent parasite clearance from the gut by preventing acetylcholine-mediated signaling from stimulating the production of intestinal chloride and mucus. Lipid Acquisition[ edit ] Parasites like helminths do not synthesize their own fatty acids or sterolsand are consequently dependent on their hosts for essential nutrients. A number of helminth secretome adatbázis classes of lipid-binding proteins have been investigated and characterized.

Ov-FAR-1, which is produced by the riverblindness parasite Onchocerca volvulus binds retinol with great affinity, and this activity may result in the helminth secretome adatbázis it causes. Ov-FAR-1, however, binds fatty acids with less affinity.

helminth secretome adatbázis

On the other hand, Sj-FABPc, found in Schistosoma japonicumbinds fatty acids with high affinity, but does not bind to retinol. Sj-FABPc uses a collision mechanism, and transfer is not affected by changing salt concentrations, suggesting that it may be important to intracellular targeted transport and metabolism of fatty acids.

helminth secretome adatbázis

Previously identified ESTs, which correspond to known helminth proteins, are used to predict the location helminth secretome adatbázis function of newly discovered helminth proteins based on genomic sequencing.

Additionally, the database can also be used to develop protein targets for new drugs to treat helminth infections. This phenomenon is attributed to the suppression of interferon-gamma secretion from autoreactive T cells following the activation of regulatory M2 macrophages.

This result supports the possibility of eventually using helminth products to treat type I diabetes in humans as well.

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