Oglufanide (Glu-Trp, thymogen) is a dipeptide having the sequence L-Glu-L-Trp. It is an immunomodulator and has been investigated for the treatment of hepatitis C. It was originally isolated from calf thymus gland extracts and has been used medicinally in Russia as a component of Thymalin, a mixture of thymus derived peptides and small proteins also containing other components such as thymosins and thymulin. Synthetic versions of Glu-Trp containing unnatural D-amino acids or with gamma-peptide bond links also have different immunomodulatory effects such as the immunosuppressor thymodepressin (D-Glu-D-Trp).
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