TY - JOUR
T1 - Gene regulation by SMAR1
T2 - Role in cellular homeostasis and cancer
AU - Malonia, Sunil Kumar
AU - Sinha, Surajit
AU - Lakshminarasimhan, Pavithra
AU - Singh, Kamini
AU - Jalota-Badhwar, Archana
AU - Rampalli, Shravanti
AU - Kaul-Ghanekar, Ruchika
AU - Chattopadhyay, Samit
N1 - Funding Information:
This work is supported by research grants from NCCS , Department of Biotechnology and Indian Council of Medical Research, India .
PY - 2011/1
Y1 - 2011/1
N2 - Changes in the composition of nuclear matrix associated proteins contribute to alterations in nuclear structure, one of the major phenotypes of malignant cancer cells. The malignancy-induced changes in this structure lead to alterations in chromatin folding, the fidelity of genome replication and gene expression programs. The nuclear matrix forms a scaffold upon which the chromatin is organized into periodic loop domains called matrix attachment regions (MAR) by binding to various MAR binding proteins (MARBPs). Aberrant expression of MARBPs modulates the chromatin organization and disrupt transcriptional network that leads to oncogenesis. Dysregulation of nuclear matrix associated MARBPs has been reported in different types of cancers. Some of these proteins have tumor specific expression and are therefore considered as promising diagnostic or prognostic markers in few cancers. SMAR1 (scaffold/matrix attachment region binding protein 1), is one such nuclear matrix associated protein whose expression is drastically reduced in higher grades of breast cancer. SMAR1 gene is located on human chromosome 16q24.3 locus, the loss of heterozygosity (LOH) of which has been reported in several types of cancers. This review elaborates on the multiple roles of nuclear matrix associated protein SMAR1 in regulating various cellular target genes involved in cell growth, apoptosis and tumorigenesis.
AB - Changes in the composition of nuclear matrix associated proteins contribute to alterations in nuclear structure, one of the major phenotypes of malignant cancer cells. The malignancy-induced changes in this structure lead to alterations in chromatin folding, the fidelity of genome replication and gene expression programs. The nuclear matrix forms a scaffold upon which the chromatin is organized into periodic loop domains called matrix attachment regions (MAR) by binding to various MAR binding proteins (MARBPs). Aberrant expression of MARBPs modulates the chromatin organization and disrupt transcriptional network that leads to oncogenesis. Dysregulation of nuclear matrix associated MARBPs has been reported in different types of cancers. Some of these proteins have tumor specific expression and are therefore considered as promising diagnostic or prognostic markers in few cancers. SMAR1 (scaffold/matrix attachment region binding protein 1), is one such nuclear matrix associated protein whose expression is drastically reduced in higher grades of breast cancer. SMAR1 gene is located on human chromosome 16q24.3 locus, the loss of heterozygosity (LOH) of which has been reported in several types of cancers. This review elaborates on the multiple roles of nuclear matrix associated protein SMAR1 in regulating various cellular target genes involved in cell growth, apoptosis and tumorigenesis.
KW - Apoptosis
KW - Cell cycle
KW - Chromatin
KW - NF-ΚB
KW - Nuclear matrix
KW - SMAR1
UR - http://www.scopus.com/inward/record.url?scp=78650539222&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650539222&partnerID=8YFLogxK
U2 - 10.1016/j.bbcan.2010.08.003
DO - 10.1016/j.bbcan.2010.08.003
M3 - Review article
C2 - 20709157
AN - SCOPUS:78650539222
SN - 0304-419X
VL - 1815
SP - 1
EP - 12
JO - Biochimica et Biophysica Acta - Reviews on Cancer
JF - Biochimica et Biophysica Acta - Reviews on Cancer
IS - 1
ER -