e-ISSN 2231-8542
ISSN 1511-3701

Home / Regular Issue / JTAS Vol. 23 (2) Jul. 2015 / JST-0473-2013


Activin A: Its Role and Involvement in Inflammatory Diseases

Tie Tung Hing, Rusliza Basir, Chuah Yaw Kuang, Herni Talib and Norshariza Nordin

Pertanika Journal of Tropical Agricultural Science, Volume 23, Issue 2, July 2015

Keywords: Activin, transforming growth factor, activin subunit, inflammation, follistatin.

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Activin proteins are members of the transforming growth factor-β family. Activin A is involved in several biological responses including wound repair, cell death, proliferation and differentiation of many cell types. Biologically active activins consist of homodimers or heterodimers of two beta (β) subunits that are linked together by a single covalent disulphide bond. The subunits in humans are βA, βB, βC and βE. As an example, a combination of two βA subunits will produce a unit of activin A. These proteins are found in most cells of body such as macrophage and activated circulating monocytes. Their role in inflammation can be categorised into two types, either pro- or anti-inflammatory agents, depending on the cell type and phase. Activin signals are kept in balance by antagonist follistatin (Fst), which is a glycoprotein expressed in tissues and encoded by the follistatin gene in humans.

ISSN 1511-3701

e-ISSN 2231-8542

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