NDLI: Human Beta Casein Fragment (54–59) Modulates M. bovis BCG Survival and Basic Transcription Factor 3 (BTF3) Expression in THP-1 Cell Line

Content Provider	PubMed Central
Author	Thakur, Dharamsheela Saxena, Reshu Singh, Vandana Haq, Wahajul Katti, S. B. Singh, Bhupendra Narain Tripathi, Raj Kamal
Editor	Robert, Lafrenie
Copyright Year	2012
Abstract	Immunostimulatory peptides potentiate the immune system of the host and are being used as a viable adjunct to established therapeutic modalities in treatment of cancer and microbial infections. Several peptides derived from milk protein have been reported to induce immunostimulatory activity. Human β -casein fragment (54–59), natural sequence peptide (NS) carrying the Val-Glu-Pro-Ile-Pro-Tyr amino acid residues, was reported to activate the macrophages and impart potent immunostimulatory activity. In present study, we found that this peptide increases the clearance of M. bovis BCG from THP-1 cell line in vitro. The key biomolecules, involved in the clearance of BCG from macrophage like, nitric oxide, pro-inflammatory cytokines and chemokines, were not found to be significantly altered after peptide treatment in comparison to the untreated control. Using proteomic approach we found that BTF3a, an isoform of the Basic Transcription Factor, BTF3, was down regulated in THP-1 cell line after peptide treatment. This was reconfirmed by real time RT-PCR and western blotting. We report the BTF3a as a novel target of this hexapeptide. Based on the earlier findings and the results from the present studies, we suggest that the down regulation of BTF3a following the peptide treatment may augment the M. bovis BCG mediated apoptosis resulting in enhanced clearance of M. bovis BCG from THP-1 cell line.
Related Links	http://dx.doi.org/10.1371/journal.pone.0045905
Starting Page	45905
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	9
Volume Number	7
Language	English
Publisher	Public Library of Science
Publisher Date	2012-09-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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