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Direct excision of 50 kb pair DNA fragments from megabase‐sized fragments produced during apoptotic cleavage of genomic DNA
Author(s) -
Sestili Piero,
Cattabeni Flaminio,
Cantoni Orazio
Publication year - 1996
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(96)01130-1
Subject(s) - microbiology and biotechnology , dna , biology , gel electrophoresis , cleavage (geology) , genomic dna , genetics , paleontology , fracture (geology)
The DNA of U937 cells exposed to two different apoptotic stimuli, namely the cocktail H 2 O 2 /3‐aminobenzamide (3AB) and etoposide, was analyzed using field inversion gel electrophoresis (FIGE) as well as programmable, autonomously controlled electrode electrophoresis (PACE). The results obtained indicate that FIGE is not appropriate for sizing apoptotic DNA fragments. PACE appears to be more accurate and reliable and the results obtained with this technique strongly suggest that the 50 kb DNA fragments are directly excised from Mb‐sized DNA fragments without the intermediate cleavage of 200–300 kb products.