Effect of Rabbit Epididymal Antimicrobial Peptide, REHbβP, on LPS-Induced Proinflammatory Cytokine Responses in Human Vaginal Cells In Vitro
Joint Authors
Sukanya, D.
Selvaakumar, C.
Reddy, K. V. R.
Patgaonkar, M. S.
Source
International Journal of Peptides
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-14
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Antimicrobial peptides (AMP’s) protect epithelial surfaces including epididymis against pathogens and play a key role in orchestrating various defensive responses.
Recently, we have identified one such AMP, rabbit epididymal hemoglobin-β subuit (REHbβP) from the epididymal fluid of rabbit, Oryctologus cuniculus.
The demonstration of a protective role of REHbβP in epididymal epithelial cells (EPEC’s) led us to investigate: (1) the identification of LPS interactive domain in REHbβP, and (2) whether the REHbβP of rabbit origin mediates vaginal cellular immune responses of another species (human).
HeLa-S3, human vaginal epithelial cells (hVECs) were exposed to LPS or the LPS-stimulated cells treated with REHbβP or neutral peptide, nREHbβP.
Effect of LPS and cytokines (IL-6 and IL-1α) and chemokines (IL-8, MCP-1) levels was determined in the culture supernatants.
In response to the LPS, hVECs synthesized these mediators and the levels were significantly higher than controls.
This enhancing effect was ameliorated when the LPS-induced hVECs were treated with REHbβP.
Similar results were obtained on NF-κB protein and hBD-1 mRNA expression.
Confocal microscopy studies revealed that REHbβP attenuated the LPS-induced internalization of E.
coli by macrophages.
The chemotaxis studies performed using Boyden chamber Transwell assay, which showed elevated migration of U937 cells when the supernatants of LPS-induced hVECs were used, and the effect was inhibited by REHbβP.
REHbβP was found to be localized on the acrosome of rabbit spermatozoa, suggesting its role in sperm protection beside sperm function.
In conclusion, REHbβP may have the potential to develop as a therapeutic agent for reproductive tract infections (RTI’s).
American Psychological Association (APA)
Reddy, K. V. R.& Sukanya, D.& Patgaonkar, M. S.& Selvaakumar, C.. 2012. Effect of Rabbit Epididymal Antimicrobial Peptide, REHbβP, on LPS-Induced Proinflammatory Cytokine Responses in Human Vaginal Cells In Vitro. International Journal of Peptides،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-497572
Modern Language Association (MLA)
Reddy, K. V. R.…[et al.]. Effect of Rabbit Epididymal Antimicrobial Peptide, REHbβP, on LPS-Induced Proinflammatory Cytokine Responses in Human Vaginal Cells In Vitro. International Journal of Peptides No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-497572
American Medical Association (AMA)
Reddy, K. V. R.& Sukanya, D.& Patgaonkar, M. S.& Selvaakumar, C.. Effect of Rabbit Epididymal Antimicrobial Peptide, REHbβP, on LPS-Induced Proinflammatory Cytokine Responses in Human Vaginal Cells In Vitro. International Journal of Peptides. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-497572
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-497572