Abstract
Autophagy and cellular senescence are interrelated cellular stress responses important for cellular homeostasis and they have been implicated in the pathogenesis of classical Hodgkin lymphoma (cHL). However, the presence of autophagy and cellular senescence and their relation with clinical and laboratory parameters needs further elucidation. Thus, autophagy (LC3B and p62 immunohistochemical expression) and cellular senescence (p16 immunohistochemical expression and SenTraGor™ staining) were studied in tissue sections from 59 patients with cHL. Autophagy and cellular senescence-associated markers were detected in variable proportions of Hodgkin and Reed-Sternberg (HRS) cells in cHL cases. High nuclear p62 immunohistochemical expression in HRS cells showed significant positive correlation with relapse of the disease (p = 0.037). Heterogeneous autophagy and cellular senescence patterns were revealed in HRS cells suggesting biological heterogeneity of cHL. The detection of high nuclear p62 expression in HRS cells may identify a subset of cHL with more aggressive clinical behavior.
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