Metabologen
A metabologen is defined as a morphogen that can initiate, promote and maintain metabolism and homeostasis. Based on this definition, bone [morphogenetic proteins] are metabologens, since they are involved in human [iron metabolism|iron homeostasis], brown [adipose tissue|brown fat] adipogenesis and energy metabolism. Professor A. [Hari Reddi] and Anand Reddi in Cytokine Growth Factor Rev were the first to propose the term metabologen.