The 40-kDa subunit of DNA fragmentation factor induces DNA fragmentation and chromatin condensation during apoptosis
نویسندگان
چکیده
منابع مشابه
The 40-kDa subunit of DNA fragmentation factor induces DNA fragmentation and chromatin condensation during apoptosis.
We report here the reconstitution of a pathway that leads to the apoptotic changes in nuclei by using recombinant DNA fragmentation factor (DFF), a heterodimeric protein of 40 and 45 kDa. Coexpression of DFF40 and DFF45 is required to generate recombinant DFF, which becomes activated when DFF45 is cleaved by caspase-3. The cleaved fragments of DFF45 dissociate from the DFF40, the active compone...
متن کاملResistance to DNA fragmentation and chromatin condensation in mice lacking the DNA fragmentation factor 45.
The DNA fragmentation factor 45 (DFF45) is a subunit of a heterodimeric nuclease complex critical for the induction of DNA fragmentation in vitro. To understand the in vivo role of DFF45 in programmed cell death, we generated DFF45 mutant mice. DNA fragmentation activity is completely abolished in cell extracts from DFF45 mutant tissues. In response to apoptotic stimuli, splenocytes, thymocytes...
متن کاملGP7 induces internucleosomal DNA fragmentation independent of caspase activation and DNA fragmentation factor in NB4 cells.
DNA fragmentation into internucleosomal fragments is the best recognized biochemical event of apoptosis. Two major caspase pathways have been identified in the signal transduction leading to DNA fragmentation: the receptor pathway and the mitochondrial pathway. DNA fragmentation factor (DFF) has been identified as a major apoptotic endonuclease in the internucleosomal DNA fragmentation process....
متن کامل[Letter to the Editor] DNA Fragmentation Is Not Associated with Apoptosis in Zerumbone-induced HepG2 Cells
Zerumbone is a cytotoxic compound isolated from the herbal plant, Zingiber zerumbet Smith, which exhibits antitumor activity [1-2], anti-inflammatory effects and possesses anti-proliferative potentials in a variety of cell lines [3-4]. DNA fragmentation indicates an early event of apoptosis leading to cell death due to the absence of new cellular proteins synthesizing for cell survival. Previou...
متن کاملsaccharin consumption increases sperm dna fragmentation and apoptosis in mice
background: saccharin is an artificial non-caloric sweetener that used to sweeten products such as drinks, candies, medicines, and toothpaste, but our bodies cannot metabolize it. sodium saccharin is considered as an important factor in tumor promotion in male rats but not in humans. objective: the objective of this study was to investigate the effect of saccharin consumption on sperm parameter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1998
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.95.15.8461