Feline mammary carcinoma‑derived extracellular vesicle promotes liver metastasis via sphingosine kinase‑1‑mediated premetastatic niche formation
10.1186/s42826-023-00180-5
- Author:
Yi‑Chih CHANG
1
;
Hao‑Ping LIU
;
Hsiao‑Li CHUANG
;
Jiunn‑Wang LIAO
;
Pei‑Ling KAO
;
Hsun‑Lung CHAN
;
Ter‑Hsin CHEN
;
Yu‑Chih WANG
Author Information
1. Department of Medical Laboratory Science & Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
- Publication Type:RESEARCH
- From:Laboratory Animal Research
2023;39(4):329-343
- CountryRepublic of Korea
- Language:English
-
Abstract:
Background:Feline mammary carcinoma (FMC) is one of the most prevalent malignancies of female cats. FMC is highly metastatic and thus leads to poor disease outcomes. Among all metastases, liver metastasis occurs in about 25% of FMC patients. However, the mechanism underlying hepatic metastasis of FMC remains largely uncharacterized.
Results:Herein, we demonstrate that FMC-derived extracellular vesicles (FMC-EVs) promotes the liver metastasis of FMC by activating hepatic stellate cells (HSCs) to prime a hepatic premetastatic niche (PMN). Moreover, we provide evidence that sphingosine kinase 1 (SK1) delivered by FMC-EV was pivotal for the activation of HSC and the formation of hepatic PMN. Depletion of SK1 impaired cargo sorting in FMC-EV and the EV-potentiated HSC activation, and abol‑ ished hepatic colonization of FMC cells.
Conclusions:Taken together, our findings uncover a previously uncharacterized mechanism underlying liver-metas‑ tasis of FMC and provide new insights into prognosis and treatment of this feline malignancy.
