The Importance of Suppressing Pathological Periostin Splicing Variants with Exon 17 in Both Stroma and Cancer
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View abstract on PubMed
Summary
This summary is machine-generated.Targeting periostin (POSTN) with exon 17 in both cancer and stromal cells significantly reduced breast cancer growth and metastasis. This suggests POSTN exon 17 is a promising therapeutic target for breast cancer treatment.
Area Of Science
- Oncology
- Molecular Biology
- Biochemistry
Background
- Periostin (POSTN) is a matrix protein with four splicing variants (PN1-4).
- Pathological POSTN (PN1-3) should be inhibited, while physiological POSTN (PN4) should not.
- Pathological POSTN with exon 17 is found in both stroma and cancer, but its specific role in each is unclear.
Purpose Of The Study
- To investigate the role of POSTN exon 17 in breast cancer stroma and cancer cells.
- To evaluate the therapeutic potential of targeting POSTN exon 17 in breast cancer.
Main Methods
- Transplantation of 4T1 breast cancer cells secreting POSTN with exon 17 into mice lacking POSTN exon 17 (17KO mice) to assess stromal suppression.
- Intravenous injection of 4T1 cells transfected with POSTN exon 17 skipping oligonucleotides to evaluate cancer cell suppression of lung metastasis.
Main Results
- 17KO mice exhibited smaller primary tumors and reduced metastasis compared to controls.
- POSTN exon 17 skipping oligonucleotides significantly suppressed lung metastasis in a cancer cell-specific targeting model.
Conclusions
- Suppression of POSTN exon 17 in both stromal and cancer cells is crucial for inhibiting breast cancer progression.
- Antibodies targeting POSTN exon 17 represent a potential therapeutic strategy for breast cancer.
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