Myers KLK4.pdf (983.74 kB)
Download fileKallikrein 4 (KLK4), A New Member of the Human Kallikrein Gene Family Is Upregulated By Estrogen and Progesterone in the Human Endometrial Cancer Cell Line, KLE
journal contribution
posted on 2023-05-18, 10:33 authored by Stephen MyersStephen Myers, Clements, JAEndometrial cancer is the fourth most common female malignancy in women in developed countries. Estrogen, and to a lesser degree, progesterone, regulate specific target genes that are involved in endometrial tumorigenesis. A family of proteases involved in cellular proliferation, extracellular matrix degradation and thus, implicated in tumorigenesis, and regulated by estrogen and progesterone in a number of systems, are the tissue kallikreins (KLKs). KLK4, a new member of the KLK gene family, was found to be expressed to varying levels in a number of endometrial cancer cell lines- HEC1A, HEC1B, Ishikawa, RL95-2 and KLE- at both the mRNA and protein level. On the addition of 10 nmol/L estradiol, progesterone, or a combination of both over a 48 h period, an increase in the intracellular protein levels of K4 were observed when compared to the control (untreated) cells. We have also identified a novel KLK4 transcript with a complete exon 4 deletion. The significance of this alternative transcript, which would give rise to a truncated protein without a serine residue (which is essential for catalytic activity), is yet to be established. These cell lines now provide a model system to study the role of KLK4 and the molecular mechanisms of KLK4 regulation by estrogen and progesterone, in endometrial tumorigenesis.
History
Publication title
The Journal of Clinical Endocrinology & MetabolismVolume
86Issue
5Pagination
2323-2326ISSN
0021-972XDepartment/School
School of NursingPublisher
The Endocrine SocietyPlace of publication
United StatesRights statement
Copyright 2001 The Endocrine SocietyRepository Status
- Open