Article Publish Status: FREE
Abstract Title:

Apigenin induces apoptosis by regulating Akt and MAPK pathways in human melanoma cell A375SM.

Abstract Source:

Mol Med Rep. 2020 Dec ;22(6):4877-4889. Epub 2020 Oct 8. PMID: 33174048

Abstract Author(s):

Joong-Seok Woo, Gang-Sik Choo, Eun-Seon Yoo, Sung-Hyun Kim, Jae-Han Lee, So-Hee Han, Hyeong-Jin Kim, Soo-Hyun Jung, Young-Seok Park, Byeong-Soo Kim, Sang-Ki Kim, Byung-Kwon Park, Sung-Dae Cho, Jeong-Seok Nam, Chang-Sun Choi, Jeong-Hwan Che, Ji-Youn Jung

Article Affiliation:

Joong-Seok Woo


Apigenin, an aromatic compound, exhibits antioxidant, anti‑inflammatory and anti‑viral effects. The present study aimed to investigate the effects of apigenin on cell proliferation and apoptosis of human melanoma cells A375P and A375SM. Therefore, melanoma cells were treated with apigenin to determine its anti‑proliferative and survival effects, using wound healing and MTT assays. The results revealed that melanoma cell viability was decreased in a dose‑dependent manner. Furthermore, chromatin condensation, indicating apoptosis, was significantly increased in a dose‑dependent manner, as demonstrated by DAPI staining. In addition, increasedapoptosis rate following treatment with apigenin was confirmed by Annexin V‑propidium iodide staining. The changes in the expression levels of apoptosis‑related proteins in A375P and A375SM melanoma cells were subsequently detected using western blot analysis. The results demonstrated that theprotein expression levels of Bcl‑2 were decreased, whereas those of Bax, cleaved poly ADP‑ribose polymerase, cleaved caspase‑9 and p53 were upregulated in a dose‑dependent manner in apigenin‑treated cells compared with those noted in untreated cells. In addition, in apigenin‑treated A375P cells, phosphorylated (p)‑p38 was upregulated and p‑extracellular signal‑regulated kinase (ERK), p‑c‑Jun N‑terminal kinase (JNK) and p‑protein kinase B (Akt) were downregulated. However, in A375SM cells, apigenin treatment increased p‑ERK and p‑JNK and decreased p‑p38 and p‑Akt protein expression levels. Subsequently, the inhibitory effect of apigenin on tumor growth was investigated in vivo. Tumor volume was significantly reduced in the 25 and 50 mg/kg apigenin‑treated groups compared with the control group. Additionally, a TUNEL assay was performed to detect apoptotic cells. Immunohistochemical staining also revealed elevated p‑ERK expression in the apigenin‑treated group compared with the control group. Overall, the findings of the present study indicated that apigenin attenuated the growth of A375SM melanoma cells by inducing apoptosis via regulating the Akt and mitogen‑activated protein kinase signaling pathways.

Study Type : Animal Study, In Vitro Study

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Sayer Ji
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