Heat shock, also factor

Pristane (2,6,10,14-tetramethylpentadecane) is a mineral oil known to induce arthritis, a disease also referred to as pristane-induced arthritis (PIA) [58], Susceptibility to PIA is MHC-haplotype dependent, in that DBA/1 (H2q) mice are susceptible whereas DBA/2 (H2d) are not, and is accompanied by a broad spectrum of autoantibodies, including anti-Rheuma Factor (RF), anti-collagen and antibodies to heat shock proteins (HSP). PIA is clearly immune dependent since nu/nu mice and irradiated mice do not develop PIA. PIA involves polyclonal T cell activation [59], particularly CD4+ cells [58], Intriguingly, mice can be protected from developing PIA by HSP65-specilic CD4+ Th2 cells [60],... 

Fig. 4.4. The principle of signal transduction by nuclear receptors. Nuclear receptors are ligand-controlled transcription factors that bind cognate DNA sequences, or hormone responsive elements (HRE). The hormone acts as a regulating ligand. Most nuclear receptors bind their cognate HREs, which tend to be symmetrically organized, as homo- or heterodimers. The DNA-bound, activated receptor stimulates transcription initiation via direct or indirect protein-protein interactions with the transcription initiation complex. The arrows demonstrate the different possible configurations of the HRE (see also 4.6). H hormone Hsp heat shock protein.

Stop protein translation sites. Furthermore, protein synthesis and stability may also be regulated by constantly changing cellular processes and extracellular signals such as heat shock proteins, growth factors, and toxins. The end result of these processes could lead to changes in protein localization and interactions, generation of protein fragments, and alteration in protein function and turnover rates. 

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