Peanut agglutinin (PNA) plays a role in cancer detection because it specifically binds to the Thomsen–Friedenreich antigen (T-antigen) — a carbohydrate structure that is hidden in normal cells but exposed in many cancer cells due to abnormal glycosylation. How It Works in Cancer Detection Why It’s Useful in Oncology
When it’s exposed, it can be detected by specific antibodies (like peanut agglutinin), and its presence is linked to disease processes. The Thomsen–Friedenreich antigen (T antigen) — sometimes called the T-antigen or T-disaccharide — is a carbohydrate structure normally hidden on cell surfaces by glycosylation. In healthy tissues, it’s cryptic (masked), but in certain diseases…
Alpha-fetoprotein (AFP) is a protein normally produced by the fetal liver and yolk sac during development. In adults, AFP levels are usually very low, so an elevated AFP can be a sign of certain medical conditions. Causes include: 1. Liver-related conditions 2. Germ cell tumors 3. Pregnancy-related causes 4. Other less common causes Key points:…
Carbohydrate antigen 72-4 (CA72-4) is a tumor-associated glycoprotein frequently studied as a biomarker for cancer, particularly gastric and gynecological malignancies. Here’s a detailed overview based on current research: Overview and Diagnostic Role Prognostic and Monitoring Value Detection Technologies Age and Gender Effects Therapeutic Potential Conclusion CA72-4 is a valuable biomarker for monitoring and prognosis in…
The Thomsen–Friedenreich (TF) antigen, also known as CD176, is a disaccharide structure comprising galactose and N-acetylgalactosamine (Galβ1-3GalNAcα1-Ser/Thr). It serves as the core 1 structure in O-linked glycosylation of proteins. In healthy tissues, the TF antigen is typically masked by additional carbohydrate chains or sialylation, rendering it inaccessible to the immune system. However, in many cancer…
KRAS mutations are among the most common oncogenic drivers in human cancers, notably in pancreatic, colorectal, and lung cancers. The KRAS gene encodes a protein that functions as a molecular switch, regulating cell growth and division. Mutations, particularly at codon 12 (such as G12D), impair the protein’s GTPase activity, leading to uncontrolled cellular proliferation. KRAS…
TP53 (Tumor Protein p53)
Alpha-Fetoprotein (AFP) is a well-established cancer biomarker with diverse clinical applications, especially in liver and germ cell tumors. Here’s a detailed summary of its biological role, diagnostic value, prognostic utility, and emerging therapeutic applications, based on recent studies: 🔬 What is AFP? AFP is a glycoprotein produced by the fetal liver and yolk sac. After…
Prostate-Specific Antigen (PSA) is a widely used cancer biomarker, particularly for prostate cancer (PCa). While it has transformed prostate cancer screening and monitoring, it also has notable limitations. Here’s a detailed breakdown based on current research: 🔍 What is PSA? PSA is a serine protease produced mainly by the prostate gland. It is highly organ-specific…
CEA is a cell adhesion molecule normally produced during fetal development. In adults, it is usually undetectable in the blood, but it may be re-expressed and elevated in certain cancers, including colorectal, gastric, pancreatic, breast, and lung cancers (Vrba et al., 1975). 🧪 Diagnostic Applications 📈 Prognostic Value 🧪 CEA in Non-Gastrointestinal Cancers 🧪 CEA…
