Targeting Smyd3 by next-generation antisense oligonucleotides suppresses liver tumor growth.
iScience
; 24(5): 102473, 2021 May 21.
Article
en En
| MEDLINE
| ID: mdl-34113819
ABSTRACT
The oncogenic function of suppressor of variegation, enhancer of zeste and MYeloid-Nervy-DEAF1-domain family methyltransferase Smyd3 has been implicated in various malignancies, including hepatocellular carcinoma (HCC). Here, we show that targeting Smyd3 by next-generation antisense oligonucleotides (Smyd3-ASO) is an efficient approach to modulate its mRNA levels in vivo and to halt the growth of already initiated liver tumors. Smyd3-ASO treatment dramatically decreased tumor burden in a mouse model of chemically induced HCC and negatively affected the growth rates, migration, oncosphere formation, and xenograft growth capacity of a panel of human hepatic cancer cell lines. Smyd3-ASOs prevented the activation of oncofetal genes and the development of cancer-specific gene expression program. The results point to a mechanism by which Smyd3-ASO treatment blocks cellular de-differentiation, a hallmark feature of HCC development, and, as a result, it inhibits the expansion of hepatic cancer stem cells, a population that has been presumed to resist chemotherapy.
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MEDLINE
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En
Revista:
IScience
Año:
2021
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Article
País de afiliación:
Grecia