TY - JOUR
T1 - Nuclear activators and coactivators in mammalian mitochondrial biogenesis
AU - Scarpulla, Richard C.
N1 - Funding Information:
Work in the author's laboratory was supported by United States Public Health Service Grant GM32525-19 from the National Institutes of Health.
PY - 2002/6/7
Y1 - 2002/6/7
N2 - The biogenesis of mitochondria requires the expression of a large number of genes, most of which reside in the nuclear genome. The protein-coding capacity of mtDNA is limited to 13 respiratory subunits necessitating that nuclear regulatory factors play an important role in governing nucleo-mitochondrial interactions. Two classes of nuclear transcriptional regulators implicated in mitochondrial biogenesis have emerged in recent years. The first includes DNA-binding transcription factors, typified by nuclear respiratory factor (NRF)-1, NRF-2 and others, that act on known nuclear genes that specify mitochondrial functions. A second, more recently defined class, includes nuclear coactivators typified by PGC-1 and related family members (PRC and PGC-1β). These molecules do not bind DNA but rather work through their interactions with DNA-bound transcription factors to regulate gene expression. An important feature of these coactivators is that their expression is responsive to physiological signals mediating thermogenesis, cell proliferation and gluconeogenesis. Thus, they have the ability to integrate the action of multiple transcription factors in orchestrating programs of gene expression essential to cellular energetics. The interplay of these nuclear factors appears to be a major determinant in regulating the biogenesis of mitochondria.
AB - The biogenesis of mitochondria requires the expression of a large number of genes, most of which reside in the nuclear genome. The protein-coding capacity of mtDNA is limited to 13 respiratory subunits necessitating that nuclear regulatory factors play an important role in governing nucleo-mitochondrial interactions. Two classes of nuclear transcriptional regulators implicated in mitochondrial biogenesis have emerged in recent years. The first includes DNA-binding transcription factors, typified by nuclear respiratory factor (NRF)-1, NRF-2 and others, that act on known nuclear genes that specify mitochondrial functions. A second, more recently defined class, includes nuclear coactivators typified by PGC-1 and related family members (PRC and PGC-1β). These molecules do not bind DNA but rather work through their interactions with DNA-bound transcription factors to regulate gene expression. An important feature of these coactivators is that their expression is responsive to physiological signals mediating thermogenesis, cell proliferation and gluconeogenesis. Thus, they have the ability to integrate the action of multiple transcription factors in orchestrating programs of gene expression essential to cellular energetics. The interplay of these nuclear factors appears to be a major determinant in regulating the biogenesis of mitochondria.
KW - Coactivator
KW - Mitochondrion
KW - NRF-1
KW - PGC-1
KW - PRC
KW - Transcription factor
UR - http://www.scopus.com/inward/record.url?scp=0037036115&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037036115&partnerID=8YFLogxK
U2 - 10.1016/S0167-4781(02)00343-3
DO - 10.1016/S0167-4781(02)00343-3
M3 - Review article
C2 - 12031478
AN - SCOPUS:0037036115
VL - 1576
SP - 1
EP - 14
JO - Biochimica et Biophysica Acta - Gene Structure and Expression
JF - Biochimica et Biophysica Acta - Gene Structure and Expression
SN - 0167-4781
IS - 1-2
ER -