posted on 2021-09-15, 07:02authored byJia Xin Chow
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<p>Systemic Lupus Erythematosus is a chronic autoimmune condition in which the body mistakenly
attacks itself. It’s aetiopathogenesis is highly complex. Increasing evidence suggests that the
innate immune system is dysregulated in SLE. The inflammasomes mediate potent
proinflammatory innate responses against invading pathogens and exogenous stressors via
caspase-1-activation of IL-1beta and IL-18. In general, a cytosolic pattern recognition receptor
(PRR), an ASC adaptor molecule, and procaspase-1 are required for the complete assembly of
an inflammasome. Notably, elevated levels of IL-1beta and IL-18 have been noted in sera and
tissues of SLE patients, highlighting their involvement in lupus development. The NLRP1, NLRP3,
NLRC4 and AIM2 inflammasome are well-characterised inflammasomes in infection context.
However, despite AIM2 (Absent in Melanoma 2) being a cytosolic dsDNA (SLE autoantigen)
sensor, its role in human SLE remains unstudied. Hence, this project aimed to characterise the
functional significance of AIM2 inflammasome in SLE patients. Briefly, the expression of the
components of AIM2 inflammasome will be studied. Functional activity of the AIM2 inflammasome
will also be analysed ex vivo. Mediators as well as the molecular mechanisms which contribute
to the dysregulation of AIM2 inflammasome in SLE will be identified.
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