They systematically deleted genes for
secreted effector proteins — molecules that the parasite injects into a host cell to modulate the immune system during infection — and injected the altered parasites into mice with aggressive ovarian cancer.
Background: Many pathogens
secrete effector molecules to subvert host immune responses, to acquire nutrients, and / or to prepare host cells for invasion.
Not exact matches
Their results demonstrate that specific rhoptry and dense granule
effector proteins that T. gondii
secretes before and after host cell invasion, respectively, control the development of an effective host antitumor response, and increase the survival of mice with ovarian tumors.
Another protein - based targeting strategy, TALENs, is based on the transcription activator - like
effector (proteins
secreted by Xanthomonas bacteria).
Naïve T cells then expand and differentiate into
effector T lymphocytes that acquire either cytotoxic activity or
secrete high amounts of certain cytokines.
[13]
Effector sites include areas such as the lamina propria, exocrine gland stroma, and surface epithelia, where mature lymphocytes perform their functions, such as releasing cytokines and
secreting antibodies.
Most well - characterized
effector molecules in other insects are
secreted into the hemolymph: in our study, 91.2 % of previously identified AMPs have bioinformatic evidence indicating presence of a signal peptide.
In addition to IL - 22, ILC3s also
secrete other
effector molecules, including the cytokine GM - CSF.
Although antimicrobial peptides are not the only functional class to be overrepresented among short,
secreted proteins encoded by members of multi-gene families, the prevalence of these properties among induced genes strongly suggests the possibly that at least some of these genes encode novel immune
effectors.
One of the ways that
effector molecules are
secreted is through extracellular vesicles (EVs) such as exosomes.