Proto-oncogene Src links lipogenesis via lipin-1 to breast cancer malignancy.
Proto-oncogene Src links lipogenesis via lipin-1 to breast cancer malignancy.
复制标题
原癌基因 Src 通过 lipin-1 将脂肪生成与乳腺癌恶性肿瘤联系起来
DOI:
10.1038/s41467-020-19694-w
复制
发表时间:
2020-11-17
影响因子:
16.6
通讯作者:
Lin SC
中科院分区:
文献类型:
--
作者:
Song L;Liu Z;Hu HH;Yang Y;Li TY;Lin ZZ;Ye J;Chen J;Huang X;Liu DT;Zhou J;Shi Y;Zhao H;Xie C;Chen L;Song E;Lin SY;Lin SC
Increased lipogenesis has been linked to an increased cancer risk and poor prognosis; however, the underlying mechanisms remain obscure. Here we show that phosphatidic acid phosphatase (PAP) lipin-1, which generates diglyceride precursors necessary for the synthesis of glycerolipids, interacts with and is a direct substrate of the Src proto-oncogenic tyrosine kinase. Obesity-associated microenvironmental factors and other Src-activating growth factors, including the epidermal growth factor, activate Src and promote Src-mediated lipin-1 phosphorylation on Tyr398, Tyr413 and Tyr795 residues. The tyrosine phosphorylation of lipin-1 markedly increases its PAP activity, accelerating the synthesis of glycerophospholipids and triglyceride. Alteration of the three tyrosine residues to phenylalanine (3YF-lipin-1) disables lipin-1 from mediating Src-enhanced glycerolipid synthesis, cell proliferation and xenograft growth. Re-expression of 3YF-lipin-1 in PyVT;Lpin1−/−mice fails to promote progression and metastasis of mammary tumours. Human breast tumours exhibit increased p-Tyr-lipin-1 levels compared to the adjacent tissues. Importantly, statistical analyses show that levels of p-Tyr-lipin-1 correlate with tumour sizes, lymph node metastasis, time to recurrence and survival of the patients. These results illustrate a direct lipogenesis-promoting role of the pro-oncogenic Src, providing a mechanistic link between obesity-associated mitogenic signaling and breast cancer malignancy.
登录
查看更多内容
DOI:
10.1016/j.bbalip.2013.03.011
发表时间:
2013-10
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Baumann J;Sevinsky C;Conklin DS
通讯作者:
Conklin DS
影响因子:
2.6
作者:
Fedchenko N;Reifenrath J
通讯作者:
Reifenrath J
影响因子:
27.5
作者:
Chen, Wei;Gong, Liang;Luo, Jie
通讯作者:
Luo, Jie
影响因子:
5.8
作者:
Jamroz-Wisniewska, Anna;Wojcicka, Grazyna;Beltowski, Jerzy
通讯作者:
Beltowski, Jerzy
影响因子:
5.3
作者:
GUY, CT;CARDIFF, RD;MULLER, WJ
通讯作者:
MULLER, WJ