Myelopeptide-2 (MP-2) (C41H57N7O8), with the sequence Leu-Val-Val-Tyr-Pro-Trp, is originally isolated from the supernatant of porcine bone marrow cell culture, and is able to restore the mitogen responsiveness of human T lymphocytes inhibited by conditioned medium from HL-60 leukemia cells or measles virus. The MP-2 recovery effect is connected with its influence on the CD3 and CD4 antigen expression on T lymphocytes. Research results also suggest that the MP-2 involvement in regulatory processes is directed to the maintenance of immune homeostasis. This peptide is perspective to be applied in antitumor and antivirus therapy. Ref:1. Mikhailova AA, Belevskaya RG, Kalyuzhnaya M, Fonina LA, Liashenko VA, Petrov RV. Myelopeptide-2 recovers interleukin-2 synthesis and interleukin-2 receptor expression in human T lymphocytes depressed by tumor products or measles virus.
