Epigallocatechin gallate protects BEAS-2B cells from lipopolysaccharide-induced apoptosis through upregulation of gastrin-releasing peptide

Divya, Peethambaran and Puthusseri, Bijesh and Manual, Denny Joseph Kollareth and Savanur, Mohammed Azharuddin (2017) Epigallocatechin gallate protects BEAS-2B cells from lipopolysaccharide-induced apoptosis through upregulation of gastrin-releasing peptide. In: MOLECULAR AND CELLULAR BIOCHEMISTRY, 434 (1-2). pp. 105-111.

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Abstract

Gastrin-releasing peptide (GRP) plays a major role in the development and maintenance of lung epithelial cells by promoting cell division, whereas its suppression causes growth arrest and apoptosis. The present study shows that human bronchial epithelial BEAS-2B cells challenged with lipopolysaccharide (LPS), an endotoxin from gram-negative bacteria, downregulated GRP expression and induced apoptosis via upregulation of p53 and active caspase-3, signifying the importance of GRP in lung epithelial cell survival. However, in the presence of epigallocatechin-3-gallate (EGCG), a polyphenol in green tea, BEAS-2B cells resisted LPS-induced apoptosis and restored the expression of GRP and its downstream effectors such as epidermal growth factor receptor and NF-kappa B, as analysed by immunoblotting and qPCR. Based on our findings, we objectify that cytoprotective functions of EGCG, via upregulation of GRP in cells challenged with LPS, are novel and can be further explored in a therapeutic point of view for diseases such as septic shock.

Item Type:	Journal Article
Publication:	MOLECULAR AND CELLULAR BIOCHEMISTRY
Additional Information:	Copy right for this article belongs to the SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Department/Centre:	Division of Biological Sciences > Biochemistry
Date Deposited:	30 Sep 2017 09:21
Last Modified:	30 Sep 2017 09:21
URI:	http://eprints.iisc.ac.in/id/eprint/57906

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