Bioregulators (Reproductive-Axis & Endocrine Signaling)

The Khavinson peptide theory refers to the body of work developed by Russian researcher Vladimir Khavinson and colleagues starting in the 1970s. The central idea is that short peptides — isolated from specific tissues — can act as tissue-specific bioregulators, binding directly to DNA and modulating gene expression in a way that is selective for the tissue from which they were derived.

This theory forms the scientific background for the bioregulator category of peptides, including compounds such as Epitalon, Thymalin, Prostamax, and Cartalax. The underlying mechanisms continue to be a subject of research, and all compounds listed under this category are offered for laboratory investigation only.

Peptide bioregulators are a class of short peptides — typically di-, tri-, or tetrapeptides — that are studied as tissue-specific signaling molecules. The concept originated in Russian biogerontology research, where extracts of various tissues were fractionated and the active peptide fragments isolated and characterized. Each bioregulator is associated in the research literature with a specific tissue of origin, such as thymus, pineal, prostate, or cartilage.

In research, bioregulators are investigated in the context of gene expression, tissue-specific signaling, and age-related changes in cellular function. All bioregulator products from Peptide Scientific Labs are lyophilized research materials intended solely for in vitro laboratory investigation.

Hormones are typically larger molecules — often proteins or steroid compounds — that are secreted by specific endocrine glands and travel through the bloodstream to act on distant target tissues via dedicated receptors. Peptide bioregulators, by contrast, are very short sequences (usually 2 to 4 amino acids) and are studied as intracellular or nuclear-level regulators that interact more directly with chromatin and gene expression in the tissues from which they were originally isolated.

Functionally, hormones tend to coordinate large-scale, system-wide processes, while bioregulators are investigated as fine-grained, tissue-specific modulators. The two categories can overlap in the broader sense of signaling biology, but they are studied as distinct classes of molecules.