These studies provide useful information regarding the priming of T-cell based immunity against tumor immune escape variants in cancer immunotherapy.
Although glycosylation of HA can modify antibody based immunity, CD8+ T-cell epitopes have been highly conserved since the 1930s [ 28, 29], and therefore, T-cell based immunity should be unaffected by evolutionary changes in HA.
Adenoviruses and in particular human Ad 5, have been widely developed as vaccine vehicles because of their high safety profile and their unique capacity to induce strong T-cell based immunity [ 2].
A recent report illustrated that immunization with B7.1-transfected TAP1-expressing RMA-S cells elicited T-cell based protective immunity against RMA-S cells [13].
Thus, our analysis not only identified B. schlosseri genes that may define evolutionary precursor cells of human hematopoietic lineages, but also indicates that the evolution of hematopoiesis proceeded from stem cells to myeloid populations to lymphoid populations, leading to the eventual emergence, absent in B. schlosseri, of T/B-cell based adaptive immunity in vertebrates.
These were based on suboptimal vector platforms with respect to induction of strong T cell-based immunity.
Dendritic cells (DC) are professional antigen-presenting cells of the immune system that play a key role in regulating T cell-based immunity.
Interestingly, some insects intrinsically thermoregulate to enhance cell-based immunity and encourage phagocytosis [37], [38].
Induction of anti-viral and anti-tumor T cell-based immunity requires professional antigen presenting cells, such as bone-marrow derived DCs (BM-DCs) [15] [18].
Glycan structures are involved in proper protein folding [19], [20], [21], intracellular trafficking [18], [20], [22], cell growth and differentiation, [20], [23], adhesion and migration [18], [24], and cell-based immunity [20], [25], among other functions.
Further, protein antigens are not efficient at inducing cell-based immunity (CMI).
