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Updated: Feb 9, 2026

Fluorimetric Techniques for the Assessment of Sperm Membranes
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Emerging role of sperm-associated antigen 9 in tumorigenesis

Jun Pan1, Haiyuan Yu1, Zhicheng Guo1

  • 1Department of Urinary Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China.

Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
|June 6, 2018
PubMed

Insights

Sperm-associated antigen 9 (SPAG9), a cancer-testis antigen, promotes tumor growth, metastasis, and drug resistance by regulating JNK/MAPK pathways. Silencing SPAG9 shows potential for cancer therapy.

Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • Sperm-associated antigen 9 (SPAG9) is identified as a novel cancer-testis antigen belonging to the JNK interacting protein (JIP) family.
  • SPAG9 exhibits high expression in various tumors and can elicit an immune response in cancer patients.

Purpose of the Study:

  • To review the current understanding of SPAG9's role in tumorigenesis.
  • To highlight SPAG9 as a potential therapeutic target for cancer diagnosis and treatment.

Main Methods:

  • Literature review of studies investigating SPAG9's function in cancer.
  • Analysis of SPAG9's involvement in key signaling pathways and cellular processes relevant to cancer progression.

Main Results:

  • SPAG9 regulates JNK and MAPK signaling pathways, contributing to tumor growth, metastasis, and drug resistance.
  • SPAG9 influences cell cycle progression and upregulates matrix metalloproteinases, facilitating tumor development.
  • Evidence suggests that silencing SPAG9 expression can inhibit tumor progression.

Conclusions:

  • SPAG9 plays a significant role in the development and progression of various cancers.
  • Targeting SPAG9 presents a promising strategy for novel cancer diagnostics and therapeutics.
Keywords:
Cell cycleDiagnosisSPAG9TherapyTumor

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