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Updated: Oct 2, 2025
An Orthotopic Murine Model of Human Prostate Cancer Metastasis
Published on: September 18, 2013
Kindlin-3 in Immune Cells Is Required to Suppress Prostate Cancer Tumor Growth in Mice
Cheng Liu1, Ying Zhou1, Y U Zhou1
1Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, P.R. China.
Background/Aim:
Kindlins are essential integrin activators. Kindlin-1 and kindlin-2 are often concomitantly expressed in epithelial tumor cells and participate in regulating tumor malignancy. However, it remains unclear whether kindlin-3, the one expressed in immune cells, also plays a role in regulating tumor malignancy.
Materials And Methods:
To examine the role of kindlin-3 in different immune cells in regulating solid tumor growth, a xenograft model of prostate cancer tumor growth in genetically modified kindlin-3 mice was employed.
Results:
Disruption of crosstalk between kindlin-3 and integrins significantly promoted subcutaneous prostate cancer tumor growth in mice. Furthermore, deficiency of kindlin-3 in T cells and NK cells, but not myeloid cells and B cells, significantly enhanced prostate cancer tumor growth.
Conclusion:
Tumor-killing leukocytes require Kindlin-3 for suppressing cancerous tumor growth, thus providing a novel anticancer mechanism.
Insights
Kindlin-3 in immune cells is crucial for suppressing prostate cancer growth. Its absence in T cells and NK cells significantly enhances tumor development, revealing a novel anticancer mechanism.
Area of Science:
- Immunology
- Oncology
- Cell Biology
Background:
- Kindlins are key activators of integrins, influencing cell behavior.
- Kindlin-1 and Kindlin-2 are implicated in epithelial tumor cell regulation.
- The role of Kindlin-3, primarily in immune cells, in tumor malignancy is largely unknown.
Purpose of the Study:
- To investigate the function of Kindlin-3 in various immune cells regarding solid tumor growth.
- To determine if Kindlin-3 deficiency impacts prostate cancer progression.
Main Methods:
- Utilized a xenograft model of prostate cancer in genetically modified mice lacking Kindlin-3.
- Examined the effects of Kindlin-3 disruption on tumor growth and immune cell populations.
Main Results:
- Impaired crosstalk between Kindlin-3 and integrins accelerated prostate cancer growth.
- Kindlin-3 deficiency in T cells and NK cells markedly enhanced tumor growth.
- Myeloid cells and B cells lacking Kindlin-3 did not significantly affect tumor growth.
Conclusions:
- Tumor-suppressing leukocytes depend on Kindlin-3 for their function.
- Kindlin-3 plays a critical role in immune-mediated cancer suppression.
- This identifies a novel mechanism for anticancer immune responses involving Kindlin-3.
