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Updated: May 15, 2026

Detection and Isolation of Apoptotic Bodies to High Purity
Published on: August 12, 2018
[Apoptosis-inducing effect of annexin A2 on multiple myeloma cells and its related mechanisms]
Hong-Yu Bao1, Jian-Ning Wang, Yan-Qiu Hou
1Department of Hematology, the Second Affiliated Hospital, Nanjing Medical University, Nanjing 210011, Jiangsu Province, China. baohongyu74@yahoo.com.cn
Abstract:
This study was purposed to investigate the apoptosis-inducing effect of Annexin A2 gene (AnxA2) on multiple myeloma (MM) cells and its mechanisms. The human MM cell lines U266 and RPMI8226 were transfected by using siRNA targeting at AnxA2; the expressions of AnxA2 mRNA and protein in the siRNA-transfected cells were detected by real-time PCR and Western blot, respectively; the cell apoptosis was assayed by flow cytometry. The results showed that silencing AnxA2 gene by siRNA resulted in decreased expressions of AnxA2 gene and protein, increased apoptosis of U266 and RPMI8226 cell lines (P < 0.05), at the same time resulted in down-regulation of apoptosis-related gene expressions including p65NF-κB, IL-2, IL-6 (P < 0.05), and up-regulation of P53 gene expression (P < 0.05). It is concluded that the AnxA2 silence plays a promoting role in apoptosis of MM cell lines U266 and RPMI8226.
Insights
Silencing the Annexin A2 gene (AnxA2) promotes apoptosis in multiple myeloma cells. This study reveals AnxA2
Area of Science:
- Molecular Biology
- Cancer Research
- Cell Biology
Context:
- Multiple myeloma (MM) is a cancer of plasma cells.
- Understanding novel therapeutic targets is crucial for MM treatment.
- Annexin A2 (AnxA2) role in MM pathogenesis requires further investigation.
Purpose:
- To investigate the apoptosis-inducing effect of Annexin A2 (AnxA2) on multiple myeloma (MM) cells.
- To elucidate the underlying mechanisms of AnxA2-mediated apoptosis in MM.
Summary:
- Human MM cell lines (U266, RPMI8226) were transfected with siRNA targeting AnxA2.
- AnxA2 gene silencing significantly increased apoptosis in MM cells (P < 0.05).
- Silencing AnxA2 modulated apoptosis-related gene expression, including down-regulation of p65NF-κB, IL-2, IL-6, and up-regulation of P53.
Impact:
- AnxA2 gene silencing demonstrates a pro-apoptotic effect on MM cells.
- This finding suggests AnxA2 as a potential therapeutic target for multiple myeloma.
- Modulation of key signaling pathways (NF-κB, p53) is involved in AnxA2-mediated apoptosis.
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