Volume 24, Issue 10 pp. 1608-1616

Bone marrow stem cells and the liver: Are they relevant?

Mélanie A Eckersley-Maslin

Mélanie A Eckersley-Maslin

Liver Cell Biology, Centenary Institute,

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Fiona J Warner

Fiona J Warner

Liver Cell Biology, Centenary Institute,

Sydney Medical School, the University of Sydney, Sydney, and

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Candice A Grzelak

Candice A Grzelak

Liver Cell Biology, Centenary Institute,

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Geoffrey W McCaughan

Geoffrey W McCaughan

Liver Cell Biology, Centenary Institute,

Sydney Medical School, the University of Sydney, Sydney, and

A.W. Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia

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Nicholas A Shackel

Corresponding Author

Nicholas A Shackel

Liver Cell Biology, Centenary Institute,

Sydney Medical School, the University of Sydney, Sydney, and

A.W. Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia

Dr Nicholas Shackel, Liver Cell Biology, Centenary Institute, Locked Bag No. 6, Newtown, NSW 2042, Australia. Email: [email protected]Search for more papers by this author
First published: 24 September 2009
Citations: 15

Abstract

The contribution of bone marrow stem cell responses to liver homeostasis, injury and malignancy is discussed in this review. Pluripotent stem cells or their more committed progenitor progeny are essential to tissue development, regeneration and repair and are widely implicated in the pathogenesis of malignancy. Stem cell responses to injury are the focus of intense research efforts in the hope of future therapeutic manipulation. Stem cells occur within tissues, such as the liver, or arise from extrahepatic sites, in particular, the bone marrow. As the largest reservoir of stem cells in the adult, the bone marrow has been implicated in the stem cell response associated with liver injury. However, in liver injury, the relative contribution of bone marrow stem cells compared to intrahepatic progenitor responses is poorly characterized. Intrahepatic progenitor responses have been recently reviewed elsewhere. In this review, we have summarized liver-specific extrahepatic stem cell responses originating from the bone marrow. The physiological relevance of bone marrow stem cell responses to adult liver homeostasis, injury and malignancy is discussed with emphasis on mechanisms of bone marrow stem cell recruitment to sites of liver injury and its contribution to intrahepatic malignancy.

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