The invention provides a novel nano
antibody-based recombinant long-acting
human growth hormone fusion protein,
nucleic acid, a pharmaceutical composition, application and the like. Existing long-acting means of
PEGylation,
Fc fusion and the like often cause reduction of activity, the
human growth hormone is innovatively fused with an anti-
albumin nano
antibody with a specific sequence, and
protein with larger molecules is formed through combination of the nano
antibody and
albumin antigen, so that the half-life period of the
human growth hormone is prolonged, the activity of the human
growth hormone is prolonged, and the human
growth hormone can be used for preparing the anti-
albumin nano antibody. In addition, the activity of the
fusion protein provided by the invention is higher than that of a human
growth hormone standard substance. The
fusion protein and the like have wide industrial application prospects in the field of biological medicines.