Exploring the pharmacology of the leukotriene B-4 receptor BLT1, without the confounding effects of BLT2
(2004) In European Journal of Pharmacology 499(1-2). p.53-65- Abstract
- Most previous studies of leukotriene B-4 (LTB4) pharmacology using primary leukocyte cultures and myeloid cell lines do not differentiate between leukotriene BLT1 and BLT1 receptor activation because both receptors are often expressed by these cells. Here we show that in HeLa cells expressing BLT1 but not BLT2 receptors, BLT1 receptor activation resulted in IP3 mediated calcium release from intracellular stores initially, followed by calcium influx through cell membrane channels. BLT1 calcium signalling was sensitive to the activity of protein kinase C (PKC). protein kinase A (PKA) and protein-tyrosine kinases (PTKs), as well as changes in membrane cholesterol levels and treatments that are known to disrupt normal membrane physiology... (More)
- Most previous studies of leukotriene B-4 (LTB4) pharmacology using primary leukocyte cultures and myeloid cell lines do not differentiate between leukotriene BLT1 and BLT1 receptor activation because both receptors are often expressed by these cells. Here we show that in HeLa cells expressing BLT1 but not BLT2 receptors, BLT1 receptor activation resulted in IP3 mediated calcium release from intracellular stores initially, followed by calcium influx through cell membrane channels. BLT1 calcium signalling was sensitive to the activity of protein kinase C (PKC). protein kinase A (PKA) and protein-tyrosine kinases (PTKs), as well as changes in membrane cholesterol levels and treatments that are known to disrupt normal membrane physiology and/or lipid rafts. Inhibition of MAP kinases, Rho-associated kinases, or phosphomositol-3-kinases (PI3K) had no effect on BLT1 receptor induced calcium signalling, and the receptor was insensitive to the redox state of the extracellular compartment. (C) 2004 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/266529
- author
- Sabirsh, Alan LU ; Bristulf, Jesper LU and Owman, Christer LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- fura-2, BLT1, leukotriene B-4, g-protein coupled receptor, pharmacology, calcium
- in
- European Journal of Pharmacology
- volume
- 499
- issue
- 1-2
- pages
- 53 - 65
- publisher
- Elsevier
- external identifiers
-
- wos:000224090000006
- pmid:15363951
- scopus:19344376165
- pmid:15363951
- ISSN
- 1879-0712
- DOI
- 10.1016/j.ejphar.2004.07.060
- language
- English
- LU publication?
- yes
- id
- 7d4ecaf6-b4db-41e5-a88d-a967026883c4 (old id 266529)
- date added to LUP
- 2016-04-01 12:09:28
- date last changed
- 2022-01-26 23:36:23
@article{7d4ecaf6-b4db-41e5-a88d-a967026883c4, abstract = {{Most previous studies of leukotriene B-4 (LTB4) pharmacology using primary leukocyte cultures and myeloid cell lines do not differentiate between leukotriene BLT1 and BLT1 receptor activation because both receptors are often expressed by these cells. Here we show that in HeLa cells expressing BLT1 but not BLT2 receptors, BLT1 receptor activation resulted in IP3 mediated calcium release from intracellular stores initially, followed by calcium influx through cell membrane channels. BLT1 calcium signalling was sensitive to the activity of protein kinase C (PKC). protein kinase A (PKA) and protein-tyrosine kinases (PTKs), as well as changes in membrane cholesterol levels and treatments that are known to disrupt normal membrane physiology and/or lipid rafts. Inhibition of MAP kinases, Rho-associated kinases, or phosphomositol-3-kinases (PI3K) had no effect on BLT1 receptor induced calcium signalling, and the receptor was insensitive to the redox state of the extracellular compartment. (C) 2004 Elsevier B.V. All rights reserved.}}, author = {{Sabirsh, Alan and Bristulf, Jesper and Owman, Christer}}, issn = {{1879-0712}}, keywords = {{fura-2; BLT1; leukotriene B-4; g-protein coupled receptor; pharmacology; calcium}}, language = {{eng}}, number = {{1-2}}, pages = {{53--65}}, publisher = {{Elsevier}}, series = {{European Journal of Pharmacology}}, title = {{Exploring the pharmacology of the leukotriene B-4 receptor BLT1, without the confounding effects of BLT2}}, url = {{http://dx.doi.org/10.1016/j.ejphar.2004.07.060}}, doi = {{10.1016/j.ejphar.2004.07.060}}, volume = {{499}}, year = {{2004}}, }