Rare Diseases Symptoms Automatic Extraction

HSP70 inhibition by 2-phenylethynesulfonamide induces lysosomal cathepsin D release and immunogenic cell death in primary effusion lymphoma.

[primary effusion lymphoma]

Heat-shock protein (HSP) 70 is aberrantly expressed in different malignancies and has a cancer-specific cell-protective effect. As such, it has emerged as a promising target for anticancer therapy. In this study, the effect of the HSP70-specific inhibitor (PES), also Pifitrin-μ, on primary effusion lymphoma (PEL) cell viability was analyzed. PES treatment induced a dose- and time-dependent cytotoxic effect in BC3 and BCBL1 PEL cells by inducing lysosome membrane permeabilization, relocation of cathepsin D in the cytosol, Bid cleavage, mitochondrial depolarization with release and nuclear translocation of apoptosis-activating factor. The PES-induced cell death in PEL cells was characterized by the appearance of Annexin-V/propidium iodide double-positive cells from the early times of treatment, indicating the occurrence of an additional type of cell death other than apoptosis, which, accordingly, was not efficiently prevented by the pan-caspase inhibitor Z-VAD-fmk. Conversely, PES-induced cell death was robustly reduced by pepstatin A, which inhibits Bid and caspase 8 processing. In addition, PES was responsible for a block of the autophagic process in PEL cells. Finally, we found that PES-induced cell death has immunogenic potential being able to induce dendritic cell activation.

Diseases presenting "lymphoma" symptom

  • adrenal incidentaloma
  • alpha-thalassemia
  • carcinoma of the gallbladder
  • cushing syndrome
  • dedifferentiated liposarcoma
  • erdheim-chester disease
  • erythropoietic protoporphyria
  • esophageal adenocarcinoma
  • esophageal carcinoma
  • familial hypocalciuric hypercalcemia
  • focal myositis
  • hirschsprung disease
  • hodgkin lymphoma, classical
  • kabuki syndrome
  • liposarcoma
  • locked-in syndrome
  • monosomy 21
  • oculocutaneous albinism
  • primary effusion lymphoma
  • severe combined immunodeficiency
  • systemic capillary leak syndrome
  • waldenström macroglobulinemia
  • wiskott-aldrich syndrome

This symptom has already been validated