Checkpoints and spindles

Checkpoints

Immune checkpoints

1 This recognition was largely driven by the success of ipilim-umab, the monoclonal antibody that targets cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4), an inhibitory receptor expressed on activated CD8 + T cells. CTLA-4 attenuates the immune response by countering the activity of CD28, a co-stimulatory receptor. 2 By targeting CTLA-4, ipilimumab effectively takes the " brakes " off T ce...

Sleep Spindles

The development of EEC sleep-spindles in prematurely-born and full-term infants was studied to test an hypothesized impact of experience (longer extrauterine existence) upon innate maturational factors (EEG development). The age of otiset of sleep spindles and achievement of mature spindle quality occurs approximately 4 weeks earlier in prematurely-born infants than in full-term infants. Sleep ...

mini spindles

We describe a new Drosophila gene, mini spindles (msps) identified in a cytological screen for mitotic mutant. Mutation in msps disrupts the structural integrity of the mitotic spindle, resulting in the formation of one or more small additional spindles in diploid cells. Nucleation of microtubules from centrosomes, metaphase alignment of chromosomes, or the focusing of spindle poles appears muc...

Mitotic checkpoints, MUGs and kinetochores

Positioning of the cell division plane is critically important for tissue morphogenesis and architecture. 1 it is therefore not surprising that mitotic spindle orientation must be tightly regulated in living tissues, a phenomenon that is also observed in cells cultured in vitro. Because of the amenability of cultured cells to molecular and physical manipulation, many investigators have used suc...