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Updated: Aug 6, 2026

Tropomodulin 3 Overexpression as a Marker for Platinum Resistance and Immune Infiltration in Ovarian Cancer
Published on: August 2, 2024
Ion channel TRPML2 (MCOLN2) promotes ovarian cancer metastasis and chemoresistance
Shizhang Yang1, Zhenchuan Lei2, Xiaoqiang Yao2
1Department of Obstetrics and Gynecology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China.
Background:
Ovarian cancer, with metastasis and chemoresistance being the major obstacles to successful treatment, is a leading cause of death among gynecological malignancies. Identifying new molecular targets and understanding the underlying mechanisms of metastasis and chemoresistance are pressing issues in ovarian cancer therapy. Emerging evidence suggests that an endolysosomal Ca2+-permeable channel TRPML2 may contribute to cancer progression. However, its exact role and associated underlying mechanisms in ovarian cancer remain largely unknown.
Methods:
TRPML2 expression was studied by tissue and cellular immunostaining and western blots. The functional role of TRPML2 in cancer was assessed by cell viability assay, colony-formation assay, wound-healing assay and transwell assay. The resistance to carboplatin-induced cytotoxic effects was evaluated by Cell Counting Kit-8.
Results:
The TRPML2 expression is elevated in ovarian cancer cell lines and ovarian tumor tissues with high expression predicting a poor prognosis in ovarian cancer. TRPML2 knockdown with siRNA markedly reduced the proliferation of ovarian cancer cells, decreased the colony formation and migration, and increased the sensitivity of ovarian cancer cells to a chemoresistant drug carboplatin.
Conclusion:
In summary, TRPML2 is critically involved in ovarian cancer progression and chemoresistance to carboplatin. Our study highlights an exciting possibility of targeting TRPML2 as a potential therapeutic option.
Insights
Transient receptor potential mucolipin 2 (TRPML2) is elevated in ovarian cancer, promoting tumor growth and carboplatin resistance. Targeting TRPML2 may offer a new therapeutic strategy for ovarian cancer patients.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Ovarian cancer poses significant challenges due to metastasis and chemoresistance.
- Understanding molecular targets is crucial for effective ovarian cancer therapy.
- The role of the TRPML2 channel in ovarian cancer progression is largely unknown.
Purpose of the Study:
- To investigate the role of TRPML2 in ovarian cancer progression.
- To determine the impact of TRPML2 on chemoresistance to carboplatin.
- To explore TRPML2 as a potential therapeutic target in ovarian cancer.
Main Methods:
- TRPML2 expression analyzed via immunostaining and western blots.
- Functional assays included cell viability, colony formation, migration, and transwell assays.
- Carboplatin resistance evaluated using Cell Counting Kit-8.
Main Results:
- Elevated TRPML2 expression observed in ovarian cancer cell lines and tissues.
- High TRPML2 expression correlated with poor prognosis in ovarian cancer.
- TRPML2 knockdown reduced proliferation, migration, and increased carboplatin sensitivity.
Conclusions:
- TRPML2 plays a critical role in ovarian cancer progression and carboplatin resistance.
- Targeting TRPML2 presents a promising therapeutic avenue for ovarian cancer.
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