Related Experiment Video
Updated: Jan 2, 2026

A Syngeneic Orthotopic Osteosarcoma Sprague Dawley Rat Model with Amputation to Control Metastasis Rate
Published on: May 3, 2021
AMPH-1 As A Critical Tumor Suppressor That Inhibits Osteosarcoma Progression
Haiyun Zhang1, Yujie Liu2, Kehan Xu2
1Department of Laboratory Medicine, The Sixth People's Hospital of Nantong, Jiangsu 226000, People's Republic of China.
Introduction:
Amphiphysin 1 (AMPH-1) is involved in endocytosis, and its expression is upregulated in osteosarcoma compared with osteofibrous dysplasia.
Methods:
We investigated the role of AMPH-1 in osteosarcoma cells via both gain-of-function and loss-of-function experiments.
Results:
Knockdown of AMPH-1 in osteosarcoma cells promoted cell cycle progression and cell proliferation and attenuated apoptosis. Notably, silencing AMPH-1 increased osteosarcoma progression in a mouse tumor model. The results obtained upon AMPH-1 knockdown and AMPH-1 overexpression indicates that AMPH-1 is involved in regulating MEK/ERK signaling.
Conclusion:
These data suggest that AMPH-1 plays an important role in osteosarcoma and may represent a novel therapeutic target for osteosarcoma treatment.
Insights
Amphiphysin 1 (AMPH-1) promotes osteosarcoma progression. Silencing AMPH-1 inhibits tumor growth and apoptosis, revealing AMPH-1 as a potential therapeutic target for osteosarcoma.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Amphiphysin 1 (AMPH-1) is implicated in endocytosis.
- AMPH-1 expression is elevated in osteosarcoma relative to osteofibrous dysplasia.
Purpose of the Study:
- To investigate the function of AMPH-1 in osteosarcoma cells.
- To explore AMPH-1 as a potential therapeutic target for osteosarcoma.
Main Methods:
- Conducted gain-of-function and loss-of-function experiments on osteosarcoma cells.
- Utilized a mouse tumor model to assess osteosarcoma progression after AMPH-1 silencing.
Main Results:
- AMPH-1 knockdown accelerated cell cycle progression and proliferation while reducing apoptosis in osteosarcoma cells.
- Silencing AMPH-1 enhanced osteosarcoma progression in vivo.
- AMPH-1 regulates the MEK/ERK signaling pathway.
Conclusions:
- AMPH-1 plays a significant role in osteosarcoma development.
- AMPH-1 inhibition presents a potential therapeutic strategy for osteosarcoma treatment.
Related Concept Videos
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Abnormal Proliferation
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Loss of Tumor Suppressor Gene Functions
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
PI3K/mTOR/AKT Signaling Pathway

