Annexin A5 suppression promotes the progression of cervical cancer

Xiaojie Wang1, Yarui Dai1, Jialu Zhang1

  • 1Chengde Medical University, Chengde, 067000, Hebei, The People's Republic of China.

Abstract

Insights

Low Annexin A5 (ANXA5) expression in cervical cancer cells promotes proliferation and metastasis. This occurs via the PI3K/Akt signaling pathway, suggesting ANXA5 as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology

Background:

  • Cervical cancer is a significant global health concern for women.
  • Annexin A5 (ANXA5) expression is linked to various cancers, but its role in cervical cancer remains unclear.

Purpose of the Study:

  • To investigate the effect of reduced ANXA5 expression on cervical cancer cell behavior (proliferation, apoptosis, migration, invasion).
  • To explore the underlying molecular mechanisms, specifically the PI3K/Akt pathway.

Main Methods:

  • RNA interference was used to suppress ANXA5 expression in HeLa cells.
  • Cell proliferation, apoptosis, migration, and invasion were assessed using MTT, colony formation, flow cytometry, wound healing, and Transwell assays.
  • Gene expression was analyzed via qPCR and Western blotting.

Main Results:

  • ANXA5 suppression increased proliferation, migration, and invasion of cervical cancer cells.
  • Apoptosis decreased in ANXA5-suppressed cells.
  • Increased expression of phosphorylated PI3K (pPI3K) and phosphorylated Akt (pAkt) was observed.

Conclusions:

  • ANXA5 may inhibit cervical cancer cell proliferation and metastasis.
  • The PI3K/Akt signaling pathway appears to be involved in ANXA5's regulatory role in HeLa cells.

Related Concept Videos

Anaphase Promoting Complex00:50

Anaphase Promoting Complex

The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by ubiquitin ligases and then subsequently destroyed by the proteasome. The SCF (Skp1/Cullin/F-box) and the anaphase-promoting complex (APC) are two important ubiquitin ligases involved in cell cycle progression. While SCF is active throughout the cell cycle, APC gets activated during metaphase to anaphase transition. Cdc20 or Cdh1 binds to APC and...
2.9K
Tumor Progression02:07

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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...
6.5K
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.9K
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
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...
5.1K
Cancer Cell Migration through Invadopodia01:35

Cancer Cell Migration through Invadopodia

Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.4K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.6K