DNMT1 is essential for mammary and cancer stem cell maintenance and tumorigenesis.
DNMT1 is essential for mammary and cancer stem cell maintenance and tumorigenesis.
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DOI:
10.1038/ncomms7910
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发表时间:
2015-04-24
影响因子:
16.6
通讯作者:
Thangaraju M
中科院分区:
文献类型:
--
作者:
Pathania R;Ramachandran S;Elangovan S;Padia R;Yang P;Cinghu S;Veeranan-Karmegam R;Arjunan P;Gnana-Prakasam JP;Sadanand F;Pei L;Chang CS;Choi JH;Shi H;Manicassamy S;Prasad PD;Sharma S;Ganapathy V;Jothi R;Thangaraju M
Mammary stem/progenitor cells (MaSCs) maintain self-renewal of the mammary epithelium during puberty and pregnancy. DNA methylation provides a potential epigenetic mechanism for maintaining cellular memory during self-renewal. Although DNA methyltransferases (DNMTs) are dispensable for embryonic stem cell maintenance, their role in maintaining MaSCs and cancer stem cells (CSCs) in constantly replenishing mammary epithelium is unclear. Here we show that DNMT1 is indispensable for MaSC maintenance. Furthermore, we find that DNMT1 expression is elevated in mammary tumors, and mammary gland-specific DNMT1 deletion protects mice from mammary tumorigenesis by limiting the CSC pool. Through genome-scale methylation studies, we identify ISL1 as a direct DNMT1 target, hypermethylated and downregulated in mammary tumors and CSCs. DNMT inhibition or ISL1 expression in breast cancer cells limits CSC population. Altogether, our studies uncover an essential role for DNMT1 in MaSC and CSC maintenance and identify DNMT1-ISL1 axis as a potential therapeutic target for breast cancer treatment.
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影响因子:
10.5
作者:
Dontu, G;Abdallah, WM;Wicha, MS
通讯作者:
Wicha, MS
影响因子:
3.8
作者:
Latini FR;Hemerly JP;Freitas BC;Oler G;Riggins GJ;Cerutti JM
通讯作者:
Cerutti JM
影响因子:
12.3
作者:
Herschkowitz JI;Simin K;Weigman VJ;Mikaelian I;Usary J;Hu Z;Rasmussen KE;Jones LP;Assefnia S;Chandrasekharan S;Backlund MG;Yin Y;Khramtsov AI;Bastein R;Quackenbush J;Glazer RI;Brown PH;Green JE;Kopelovich L;Furth PA;Palazzo JP;Olopade OI;Bernard PS;Churchill GA;Van Dyke T;Perou CM
通讯作者:
Perou CM
影响因子:
7.2
作者:
Huang, Tim H. -M.;Esteller, Manel
通讯作者:
Esteller, Manel
影响因子:
64.5
作者:
Okano, M;Bell, DW;Li, E
通讯作者:
Li, E