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Updated: Oct 11, 2025

Sperm Collection of Differential Quality Using Density Gradient Centrifugation
Published on: November 29, 2018
Sperm Associated Antigens: Vigorous Influencers in Life
Samaneh Faraji1,2, Mohsen Sharafi3, Abdol Hossein Shahverdi2,4
1Department of Molecular and Cellular Biology, Faculty of Basic Science and Advanced Technologies in Biology, University of Science and Culture, ACECR, Tehran, Iran.
Sperm associated antigens (SPAGs) are key proteins in male reproduction and immunity. This review covers their roles in fertility, cell signaling, and cancer prognosis.
Area of Science:
- Reproductive immunology
- Molecular biology
- Oncology
Background:
- Sperm associated antigens (SPAGs) are proteins primarily expressed in sperm and testes.
- Immune responses against SPAGs can lead to immunological infertility.
- Emerging research highlights SPAGs' roles beyond reproduction, including in cancer.
Purpose of the Study:
- To provide a comprehensive review of SPAGs.
- To elucidate the multifaceted roles of SPAGs in cellular processes and disease.
- To discuss SPAGs' implications in fertility and cancer.
Main Methods:
- Literature review and synthesis of existing research on SPAGs.
- Analysis of SPAGs' involvement in cell cycle and signaling pathways.
- Examination of SPAGs' association with fertility and tumor progression.
Main Results:
- SPAGs are crucial for sperm function and sperm-oocyte interactions.
- Anti-sperm antibodies (ASA) against SPAGs are linked to infertility.
- Certain SPAGs function as prognostic factors in various cancers.
Conclusions:
- SPAGs play critical roles in male fertility and reproductive health.
- Understanding SPAGs is vital for diagnosing and treating immunological infertility.
- SPAGs represent potential biomarkers and therapeutic targets in oncology.
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