Volume 39, Issue 8 e70398
RESEARCH ARTICLE

D-Mannose Upregulates Testin via the NF-κB Pathway to Inhibit Breast Cancer Proliferation

Xue Cao

Xue Cao

The First School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia, China

Search for more papers by this author
Xinlan Liu

Xinlan Liu

Department of Medical Oncology, Ningxia Hui Autonomous Region Hospital, Yinchuan, Ningxia, China

Search for more papers by this author
Ping Chen

Ping Chen

Department of Medical Oncology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China

Search for more papers by this author
Tingting Wei

Tingting Wei

Department of Medical Oncology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China

Search for more papers by this author
Qingxia Zhou

Qingxia Zhou

Oncology Department, Wuzhong People's Hospital, Wuzhong, Ningxia, China

Search for more papers by this author
Guoxin Zhang

Guoxin Zhang

The First School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia, China

Search for more papers by this author
Tong She

Tong She

Oncology Department, Hospital of Zhongwei, Zhongwei, Ningxia, China

Search for more papers by this author
Zhisheng Wang

Corresponding Author

Zhisheng Wang

School of Inspection, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China

Correspondence: Zhisheng Wang ([email protected])

Yaobang Liu ([email protected])

Search for more papers by this author
Yaobang Liu

Corresponding Author

Yaobang Liu

Department of Surgical Oncology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China

Correspondence: Zhisheng Wang ([email protected])

Yaobang Liu ([email protected])

Search for more papers by this author
First published: 17 July 2025

Xue Cao and Xinlan Liu contributed equally to this work.

ABSTRACT

d-Mannose is a naturally occurring monosaccharide known to enhance the effects of chemotherapy, immunotherapy, and radiotherapy in cancer patients. This study aimed to investigate the growth-regulating mechanism of d-mannose on breast cancer (BC) cells. d-mannose was treated on MDA-MB-231 and MCF-7 BC cells. Cell counting kit-8 (CCK-8), wound healing test, transwell invasion, and flow cytometry assays were used to assess the viability, invasion, migration, and apoptosis of d-mannose treated BC cells. Testin (TES) expressions in d-mannose treated BC cells were evaluated using western blot analysis, qRT-PCR, and immunofluorescence assays. The potential regulatory relationship between d-mannose and TES in BC cells were explored by analyzing TES gene expression profile in BC cells using the University of California Santa Cruz (UCSC) Xena browser database. Immunohistochemical analysis of TES protein was performed in BC tissue samples obtained from patients. It was found that d-mannose significantly inhibited the growth of MDA-MB-231 and MCF-7 cells in a concentration and time-dependent manner by activating the NF-κB signaling pathway and upregulating TES expression. TES knockdown downregulated the NF-κB1, NF-κB2, and p65 protein expressions. Therefore, this study highlights that d-mannose have the potential to promote anticancer effects upon further trials using in vivo models and clinical studies.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data underlying this article are available and will be provided upon reasonable request from the corresponding author.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.