Related Experiment Video

Updated: Jan 15, 2026

Author Spotlight: Exploring Salidroside's Molecular Mechanisms in Breast Cancer Treatment
11:13

Author Spotlight: Exploring Salidroside's Molecular Mechanisms in Breast Cancer Treatment

Published on: June 9, 2023

2.3K

Synergistic Reduction of Breast Cancer Cell Viability and Aggressiveness Through Dual Inhibition of APE1 Redox

Mariana Moreno de Sousa Rodrigues1, Priscyanne Barreto Siqueira1, Ana Clara Cavallo Dobao1

  • 1Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcântara Gomes, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.

Cell Biology International
|October 15, 2025
PubMed

Insights

Targeting the APE1 redox domain and STAT3 shows promise for breast cancer therapy. Combined inhibitors synergistically reduce cancer cell survival, proliferation, migration, and invasion, offering new treatment strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Cancer aggressiveness and treatment resistance necessitate novel therapeutic targets.
  • The APE1 redox domain influences transcription factors promoting cancer.
  • STAT3, a target of APE1, regulates genes critical for cancer hallmarks.

Purpose of the Study:

  • To investigate the role of APE1 redox function and STAT3 in breast cancer cell survival and aggressiveness.
  • To evaluate the combined effect of APE1 and STAT3 inhibitors on breast cancer cell behavior.
  • To correlate APE1 and STAT3 expression with proliferation and metastasis in patient samples.

Main Methods:

  • Assessed cell viability, proliferation, migration, invasion, and cell death using APE1 and STAT3 inhibitors.
  • Analyzed breast cancer patient data from TCGA to verify APE1-STAT3 association.
  • Correlated APE1 and STAT3 activity with proliferation and metastasis gene signatures.

Main Results:

  • Combined APE1 and STAT3 inhibition synergistically decreased breast cancer cell viability, proliferation, migration, and invasion.
  • Higher APE1 and STAT3 activity levels correlated positively with proliferation and metastasis gene signatures.
  • The association between APE1 and STAT3 in breast cancer aggressiveness was characterized.

Conclusions:

  • The APE1 redox domain and STAT3 are potential therapeutic targets for breast cancer.
  • Combined inhibition strategies targeting APE1 and STAT3 show enhanced efficacy.
  • This study provides a basis for developing new targeted therapies against breast cancer.
Keywords:
APE1STAT3aggressivenessbreast cancer

More Related Videos

Enhancement of Apoptotic and Autophagic Induction by a Novel Synthetic C-1 Analogue of 7-deoxypancratistatin in Human Breast Adenocarcinoma and Neuroblastoma Cells with Tamoxifen19:44

Enhancement of Apoptotic and Autophagic Induction by a Novel Synthetic C-1 Analogue of 7-deoxypancratistatin in Human Breast Adenocarcinoma and Neuroblastoma Cells with Tamoxifen

Published on: May 30, 2012

19.1K
A Data Integration Workflow to Identify Drug Combinations Targeting Synthetic Lethal Interactions07:40

A Data Integration Workflow to Identify Drug Combinations Targeting Synthetic Lethal Interactions

Published on: May 27, 2021

4.5K

Related Concept Videos

Combination Therapies and Personalized Medicine02:50

Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
5.9K
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.2K
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
8.6K
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
8.3K
Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.5K
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...
5.1K