The genesis of peptides is a journey that spans over a century of scientific discovery, transforming from simple laboratory observations to the foundation of modern precision medicine.
The Foundations: Naming the “Peptide” (1901–1902)
The story begins at the dawn of the 20th century. In 1901, chemist Emil Fischer, now considered the founding father of peptide chemistry, successfully prepared the first synthetic dipeptide, glycylglycine. A year later, at a scientific meeting in Karlsbad, he coined the term “peptide”—derived from the Greek pepsis (digestion)—to describe the substances resulting from the breakdown of proteins.
During this How are ozempic Peptides sourced in San Jose California same period, the field of endocrinology was born. In 1902, Bayliss and Starling discovered secretin, the first hormone to be identified. This proved that chemical messengers (peptides) were secreted in one part of the body to regulate functions in another, providing the biological “proof of concept” for what these molecules could do.