The gene DNA fragmentation factor subunit alpha (DFFA), also known as DNA fragmentation factor 45 (DFF45), is mapped to human chromosome 1p36.2. The encoded protein localizes to the chromatin fraction. It exist in association with DFF40, thereby forming a heterodimer. DFFA is popularly called as DFF45 (DNA fragmentation factor 45).
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DFFA (NP_004392.1, 1 a.a. ~ 331 a.a) full-length human protein.
DNA fragmentation factor subunit α (DFFA) is a component of DNA fragmentation factor (DFF). It is mainly associated with apoptosis and genomic stability. Caspase-3-mediated cleavage of DFFA releases DFF40 (DNA fragmentation factor 40) which degrades chromosomal DNA. During menstruation, the apoptosis of endometrium cells is associated with DFFA. Its expression decreases after menopause. Silencing of DFFA increases doxorubicin effects in breast cancer cells.
Neoplasia (New York, N.Y.), 3(2), 165-169 (2001-06-23)
Recently, loss of heterozygosity (LOH) studies suggest that more than two tumor suppressor genes lie on the short arm of chromosome 1 (1p) in neuroblastoma (NB). To identify candidate tumor suppressor genes in NB, we searched for homozygous deletions in
DFF45 expression in human endometrium is associated with menstrual cycle phases and decreases after menopause.
Banas T, et al.
Gynecologic and Obstetric Investigation, 73, 177-182 (2012)
siRNA-mediated knock-down of DFF45 amplifies doxorubicin therapeutic effects in breast cancer cells.
Bagheri F, et al.
Cellular Oncology (Dordrecht), 36, 515-526 (2013)
ICAD deficiency in human colon cancer and predisposition to colon tumorigenesis: linkage to apoptosis resistance and genomic instability.