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Attenuation of PITPNM1 Signaling Cascade Can Inhibit Breast Cancer Progression

Zihao Liu1,2, Yu Shi1,2, Qun Lin1,2

  • 1Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China.

Biomolecules
|September 28, 2021
PubMed

Insights

Phosphatidylinositol transfer protein membrane-associated 1 (PITPNM1) is highly expressed in breast cancer, indicating a poor prognosis. Silencing PITPNM1 reduces cancer cell proliferation, suggesting it as a therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Phosphatidylinositol transfer protein membrane-associated 1 (PITPNM1) has a conserved domain involved in phosphoinositide trafficking and signaling.
  • The role of PITPNM1 in cancer progression, particularly breast cancer, is currently unknown.

Purpose of the Study:

  • To investigate the functional role of PITPNM1 in breast cancer progression.
  • To determine if PITPNM1 expression correlates with patient prognosis and can serve as a therapeutic target.

Main Methods:

  • Integrated analysis of The Cancer Genome Atlas (TCGA) and Molecular Taxonomy of Breast Cancer (METABRIC) datasets.
  • Gene Set Variation Analysis (GSEA) and Gene Ontology (GO) analysis.
  • In vitro experiments involving silencing of PITPNM1 in breast cancer cells.

Main Results:

  • PITPNM1 expression is significantly elevated in breast cancer tissues compared to normal tissues.
  • High PITPNM1 expression is associated with a poor prognosis in breast cancer patients.
  • Silencing PITPNM1 inhibited breast cancer cell proliferation and colony formation in vitro.
  • GSEA and GO analyses linked PITPNM1 to carcinogenesis and cell-to-cell signaling pathways.

Conclusions:

  • PITPNM1 is upregulated in breast cancer and serves as a significant prognostic indicator.
  • PITPNM1 plays a role in promoting breast cancer cell proliferation and colony formation.
  • PITPNM1 represents a potential therapeutic target for breast cancer treatment.
Keywords:
PITPNM1breast cancermetastasisproliferation

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