Green tea epigallocatechin gallate suppresses 3T3-L1 cell growth via microRNA-143/MAPK7 pathways

Chia Pei Chen, Tsung Chen Su, Meei Ju Yang, Wen Ting Chen, An Ci Siao, Ling Ru Huang, Yen Yue Lin, Yow Chii Kuo, Jia Fang Chung, Ching Feng Cheng, Hui Chen Ku, Yung Hsi Kao

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Green tea epigallocatechin gallate (EGCG) and microRNA (miRNA) molecules modulate obesity. Nevertheless, it is still unknown whether EGCG modulates fat cell growth via miRNA-related signaling. In this study, white preadipocytes were used to examine whether the antimitogenic effect of EGCG on fat cells is regulated by the miR-143/MAPK7 pathway. We showed that EGCG upregulated the levels of miR-143, but not miR-155, in 3T3-L1 preadipocytes. Moreover, EGCG downregulated MAPK7 mRNA and protein levels time- and dose-dependently. MAPK7 expression increased during 3T3-L1 cell proliferation. miR-143 overexpression in the absence of EGCG mimicked the effects of EGCG to suppress preadipocyte growth and MAPK7 expression, whereas knockdown of miR-143 antagonized the EGCG-altered levels of miR-143, MAPK7, and pERK1/2 and reversed the EGCG-inhibited cell growth. These findings suggest that EGCG inhibits 3T3-L1 cell growth via miR-143/MAPK7 pathway.

Original languageEnglish
Pages (from-to)1670-1679
Number of pages10
JournalExperimental Biology and Medicine
Issue number18
StatePublished - Sep 2022


  • 3T3-L1
  • EGCG
  • Green tea
  • MAPK7
  • cell growth
  • microRNA-143


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