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SPARC promotes pancreatic cancer cell proliferation and migration through autocrine secretion into the extracellular

Kehua Pan1, Xince Huang2, Xiufen Jia1

  • 1Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China.

Oncology Letters
|May 10, 2021
PubMed

Insights

Secreted protein acidic and rich in cysteine (SPARC) acts as an oncogene in most cancers, including pancreatic adenocarcinoma (PAAD). SPARC promotes PAAD cell proliferation and migration, correlating with poor patient prognosis.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Secreted protein acidic and rich in cysteine (SPARC) has a complex role in tumor development, with conflicting evidence on its oncogenic or tumor-suppressive functions.
  • SPARC's dual role necessitates further investigation, particularly in pancreatic adenocarcinoma (PAAD), where its therapeutic potential is being explored.

Purpose of the Study:

  • To conduct a pan-cancer analysis of SPARC expression and function.
  • To investigate the specific role of SPARC in pancreatic adenocarcinoma (PAAD) pathogenesis and its association with patient prognosis.

Main Methods:

  • Pan-cancer analysis utilizing The Cancer Genome Atlas (TCGA) data.
  • In vitro experiments assessing the impact of SPARC on PAAD cell proliferation and migration (PANC-1 and SW1990 cell lines).
  • Detection of SPARC in cell culture supernatants.

Main Results:

  • SPARC functions as an oncogene in most cancer types but as a tumor suppressor in others.
  • SPARC expression is significantly upregulated in PAAD and linked to poorer patient outcomes.
  • SPARC enhances PAAD cell proliferation and migration in vitro, particularly when secreted extracellularly.

Conclusions:

  • SPARC's role is context-dependent, varying with tumor type.
  • SPARC acts as a significant oncogene in pancreatic adenocarcinoma (PAAD).
  • SPARC's extracellular function in PAAD highlights its importance in tumor progression and suggests potential as a therapeutic target.
Keywords:
SPARCextracellular milieumigrationpan-cancerpancreatic cancerproliferation

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