[Immunochemical identification and study of interspecies thymus antigen-2].
Falageeva. D M DM; Kalashnikov. V V VV
Key Findings
- AgT-2 is a 12 kDa microglobulin with a stable immunochemical activity even after heating.
- It is present in bovine fetal thymus, spleen, liver, and adult lung and colon, and cross‑reacts among bovine, walrus, deer, and chicken.
- AgT-2 is a constant component of thymalin, thymosin, T‑activin, and TP1‑Serono, ranging from 1.6% to 3.2% of the preparation.
- The protein is absent in humans, dogs, mice, rats, and rabbits.
Practical Outcomes
- For biohackers using thymus‑derived supplements, the presence of AgT-2 can serve as a quality‑control marker to verify product consistency. However, the study does not provide dosing guidance, efficacy data, or direct health benefits, so its immediate impact on personal protocols is limited.
Summary
Scientists discovered a small protein called AgT-2 in the thymus and some other organs of several animals, but not in humans. This protein is a regular part of commercial thymus‑derived supplements like thymalin, and its amount can be measured to check product quality.
Abstract
A new interspecific animal thymus antigen (AgT-2) was identified. It was shown that AgT-2 is a microglobulin with a molecular mass about 12 kDa, electrophoretic mobility of alpha 1-globulins and isoelectric point of 4.6. Heating of the protein to 80 degrees C for 30 min did not lead to the loss of its immunochemical activity. AgT-2 was identified in extracts of bovine fetal thymus, spleen and liver. It was discovered in the extracts of the lung and colon of adult animals. Cross-reactions were found between bovine, walrus, deer and chicken AgT-2. This fact confirms that AgT-2 is interspecies-specific. AgT-2 was not identified in men, dogs, mice, rats and rabbits. Immunochemical research of immunocorrecting preparations revealed that AgT-2 is a constant component of T-activin, thymalin, thymosin and TP1-Serono and its concentration varies from 1.6 to 3.2%. It has been stated that immunochemical test for AgT-2 can be used as a marker in the production and standardization of active thymus factors.
Study Information
pubmed
1988