title: Regulatory Roles of Rpl22 in Hematopoiesis: An Old Dog with New Tricks.
abstract: Ribosomal proteins have long been known to serve critical roles in facilitating the biogenesis of the ribosome and its ability to synthesize proteins. However, evidence is emerging that suggests ribosomal proteins are also capable of performing tissue-restricted, regulatory functions that impact normal development and pathological conditions, including cancer. The challenge in studying such regulatory functions is that elimination of many ribosomal proteins also disrupts ribosome biogenesis and/or function. Thus, it is difficult to determine whether developmental abnormalities resulting from ablation of a ribosomal protein result from loss of core ribosome functions or from loss of the regulatory function of the ribosomal protein. Rpl22, a ribosomal protein component of the large 60S subunit, provides insight into this conundrum; Rpl22 is dispensable for both ribosome biogenesis and protein synthesis yet its ablation causes tissue-restricted disruptions in development. Here we review evidence supporting the regulatory functions of Rpl22 and other ribosomal proteins.
authors: Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111.
authors: Shawn P
authors: SP
authors: Fahl
authors: Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111.
authors: Minshi
authors: M
authors: Wang
authors: Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111.
authors: Yong
authors: Y
authors: Zhang
authors: Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111.
authors: Anne-Cecile E
authors: AC
authors: Duc
authors: Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111.
authors: David L
authors: DL
authors: Wiest
mesh_terms: D000818:Animals; D004285:Dogs; D047108:Embryonic Development; D006410:Hematopoiesis; D006801:Humans; D009928:Organ Specificity; D016601:RNA-Binding Proteins / Q000276:immunology / Q000378:metabolism*; D012269:Ribosomal Proteins / Q000276:immunology / Q000378:metabolism*; D012270:Ribosomes / Q000502:physiology*
chemical_list: D016601:RNA-Binding Proteins; D012269:Ribosomal Proteins; C067169:RPL22 protein, human