4.7 Article

Spirulina phycocyanin extract and its active components suppress epithelial-mesenchymal transition process in endometrial cancer via targeting TGF-beta1/SMAD4 signaling pathway

Journal

BIOMEDICINE & PHARMACOTHERAPY
Volume 152, Issue -, Pages -

Publisher

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.biopha.2022.113219

Keywords

Endometrial cancer; spirulina phycocyanin extract; Allophycocyanin; C-phycocyanin; Epithelial -mesenchymal transition; Transforming growth factor beta

Funding

  1. Ministry of Science and Technology, Taiwan [MOST108 -2320-B-214- 001, MOST109 -2314-B-038 -059, MOST109 -2628-B-038 -015, MOST109 -2320-B-254 -001, MOST109 -2314-B-214 -004, MOST110-2314-B-038-158, MOST110-2628-B-038-018]
  2. Ministry of Education, Taiwan [MOE-RSC-108RSN0005]
  3. I-Shou University [ISU-110-IUC-01]

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The study found that Spirulina phycocyanin extract (SPE) and its purified products APC and C-PC inhibited the metastasis of endometrial cancer by reversing the TGF beta/SMADs signaling pathway.
Metastasis is a major challenge in aggressive endometrial cancer treatment accounting for the high recurrence risk and poor prognosis of epithelial-mesenchymal transition (EMT), regulated by the transforming growth factor beta (TGF beta) signaling pathway, facilitates tumor metastasis. Spirulina phycocyanin extract (SPE) and its purified products allophycocyanin (APC) and C-phycocyanin (C-PC), derived from Spirulina platensis, can be considered a nutraceutical compound with the ability to inhibit tumor growth and metastasis. Current study aims to investigate the anti-metastatic potential of SPE, and its purified products APC, and C-PC on endometrial cancer both in vitro and in vivo. Firstly, human endometrial cancer cell lines (HEC-1A and Ishikawa) as an in vitro model. Secondly, HEC-1A cells transfected with luminescence gene were implanted into female nude mice as a xenograft model. MTT assay, transwell migration assay, immunoblotting assay, quantitative real-time polymerase chain reaction assay, and IVIS XRMS analysis techniques were used. The in vitro results showed that SPE and its purified products APC and C-PC inhibited cell migration, and altered the expression of EMT-related phenotypes by reversing the TGF beta/SMADs signaling pathway. The in vivo results indicated that SPE repressed the metastasis of HEC-1A-LUC cells through modulating EMT-related markers expression. Overall, SPE and its efficient components APC and C-PC reversed the EMT through targeting the TGF beta/SMADs signaling pathway, suggesting an effective therapeutic strategy for metastatic endometrial cancer.

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