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Anti-SALL4 (clone QR024)

Anti-SALL4 (clone QR024)

SALL4 – A Key Transcription Factor and Cancer Marker
The SALL Protein Family and SALL4 Function
✔ The human body expresses four SALL proteins: SALL1, SALL2, SALL3, and SALL4, which share structural homology and play diverse roles in:
      
  • Embryonic development
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  • Kidney function
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  • Oncogenesis
✔ SALL4 (Sal-like protein 4) is a zinc-finger transcription factor that:
      
  • Maintains pluripotency in stem cells
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  • Interacts with other pluripotency factors, such as OCT4 and NANOG
SALL4 as a Marker for Germ Cell Tumors
✔ Due to its expression in germ cells, SALL4 serves as a valuable marker in the diagnosis of germ cell tumors, including:
      
  • Seminoma
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  • Embryonal carcinoma
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  • Yolk sac tumor
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  • Teratoma
SALL4 and Prognosis in Cancer
✔ SALL4 expression is often associated with poor survival and prognosis, for example, in:
      
  • Hepatocellular carcinoma (HCC)
✔ In other malignancies, SALL4 overexpression is linked to metastasis, such as in:
      
  • Endometrial carcinoma
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  • Colorectal carcinoma (CRC)
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  • Esophageal squamous cell carcinoma
SALL4 Expression in Adult Cancers
✔ In most adult tissues, SALL4 levels are low or undetectable (except in germ cells and hematopoietic progenitor cells).
✔ However, reactivation and dysregulated expression of SALL4 occur in various malignancies, including:
      
  • Acute myeloid leukemia (AML)
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  • B-cell acute lymphoblastic leukemia (B-ALL)
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  • Gastric cancer
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  • Breast cancer
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  • Hepatocellular carcinoma (HCC)
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  • Lung cancer
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  • Gliomas
Summary
✔ SALL4 is a key transcription factor involved in pluripotency and oncogenesis.
✔ It serves as a useful marker for germ cell tumors, including seminoma, embryonal carcinoma, yolk sac tumor, and teratoma.
✔ High SALL4 expression correlates with poor prognosis and metastasis in several malignancies, such as HCC, endometrial carcinoma, and colorectal carcinoma.
✔ While its expression is low in adult tissues, SALL4 reactivation is observed in various cancers, including AML, B-ALL, gastric, breast, lung cancers, and gliomas.
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