Tumor Cell “Slimming” Regulates Tumor Progression through PLCL1/UCP1-Mediated Lipid Browning.

A new interesting article has been published in Adv Sci (Weinh). 2019 Mar 25;6(10):1801862. doi: 10.1002/advs.201801862. eCollection 2019 May 17. and titled:

Tumor Cell “Slimming” Regulates Tumor Progression through PLCL1/UCP1-Mediated Lipid Browning.

Authors of this article are:

Xiong Z, Xiao W, Bao L, Xiong W, Xiao H, Qu Y, Yuan C, Ruan H, Cao Q, Wang K, Song Z, Wang C, Hu W, Ru Z, Tong J, Cheng G, Xu T, Meng X, Shi J, Chen Z, Yang H, Chen K, Zhang X.

A summary of the article is shown below:

Emerging evidence has highlighted the important role of abnormal lipid accumulation in cancer development and progression, but the mechanism for this phenomenon remains unclear. Here, it is demonstrated that phospholipase C-like 1/uncoupling protein 1 (PLCL1)/(UCP1)-mediated lipid browning promotes tumor cell “slimming” and represses tumor progression. By screening three independent lipid metabolism-related gene sets in clear cell renal cell carcinoma (ccRCC) and analyzing the TCGA database, it is found that PLCL1 predicted a poor prognosis and was downregulated in ccRCC. Restoration of PLCL1 expression in ccRCC cells significantly represses tumor progression and reduces abnormal lipid accumulation. Additionally, a phenomenon called tumor cell “slimming,” in which tumor cell volume is reduced and lipid droplets are transformed into tiny pieces, is observed. Further studies show that PLCL1 promotes tumor cell “slimming” and represses tumor progression through UCP1-mediated lipid browning, which consumes lipids without producing ATP energy. Mechanistic investigations demonstrate that PLCL1 improves the protein stability of UCP1 by influencing the level of protein ubiquitination. Collectively, the data indicate that lipid browning mediated by PLCL1/UCP1 promotes tumor cell “slimming” and consumes abnormal lipid accumulation, which represses the progression of ccRCC. Tumor cell “slimming” offers a promising new concept and treatment modality against tumor development and progression.

Check out the article’s website on Pubmed for more information:



This article is a good source of information and a good way to become familiar with topics such as: PLCL1; UCP1; clear cell renal cell carcinoma; lipid browning; tumor cell “slimming”.