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Depletion of DNTTIP2 Induces Cell Cycle Arrest in Pancreatic Cancer Cells

Masato Yoshizawa1, Atsushi Shiozaki2, Eishi Ashihara3

  • 1Laboratory of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Kyoto, Japan; kd20011@ms.kyoto-phu.ac.jp.

Cancer Genomics & Proteomics
|December 27, 2023
PubMed
Abstract

Insights

Deoxynucleotidyltransferase terminal-interacting protein 2 (DNTTIP2) is linked to pancreatic cancer prognosis. Depleting DNTTIP2 inhibits pancreatic cancer cell proliferation by causing cell cycle arrest, suggesting DNTTIP2 as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Pancreatic cancer, specifically pancreatic ductal adenocarcinoma (PDAC), is a leading cause of cancer mortality globally.
  • Identifying novel molecular targets is crucial for improving PDAC treatment outcomes.
  • Deoxynucleotidyltransferase terminal-interacting protein 2 (DNTTIP2) expression was found to correlate with PDAC prognosis.

Purpose of the Study:

  • To investigate the role of DNTTIP2 in pancreatic cancer cell proliferation.
  • To determine the potential of DNTTIP2 as a therapeutic target for pancreatic cancer.

Main Methods:

  • Quantitative reverse transcription-PCR and western blot analysis were used to assess DNTTIP2 mRNA and protein expression.
  • Cell proliferation was evaluated using WST-8 assays.
  • Cell cycle progression and apoptosis were analyzed via cell cycle analysis and Annexin-V staining, respectively.
  • DNTTIP2 was depleted in MIA-PaCa-2 and PK-1 pancreatic cancer cell lines.

Main Results:

  • DNTTIP2 depletion induced G1 cell cycle arrest in MIA-PaCa-2 cells by reducing special AT-rich sequence binding protein 1 (SATB1) and cyclin-dependent kinase 6 (CDK6) expression.
  • DNTTIP2 depletion induced G2 cell cycle arrest in PK-1 cells by reducing cyclin-dependent kinase 1 (CDK1) expression.
  • DNTTIP2 depletion did not significantly affect apoptosis in either cell line.

Conclusions:

  • DNTTIP2 plays a significant role in regulating the proliferation of pancreatic cancer cells.
  • DNTTIP2 represents a promising molecular target for developing novel therapeutic strategies against pancreatic cancer progression.
Keywords:
CDK1CDK6DNTTIP2Pancreatic cancerSATB1cells

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