Journal
INTERNATIONAL JOURNAL OF CANCER
Volume 128, Issue 4, Pages 805-816Publisher
WILEY
DOI: 10.1002/ijc.25402
Keywords
phospholipase D1; phosphatidic acid; growth factor; expression; autoregulation
Categories
Funding
- Korean Government (Korea Research Foundation), MOEHRD [KRF-2007-313-E00090]
- Ministry for Health, Welfare and Family affairs, Republic of Korea [0920050]
- Translational Research Center for Protein Function Control, NSF, South Korea [2009-0092960]
- National Research Foundation of Korea [2009-0092960] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Phospholipase D (PLD) is an important signaling enzyme implicated in the control of many biological processes, including cell proliferation and survival. Despite the importance of the duration and amplitude of PLO signaling in carcinogenesis, mechanisms that regulate PLD expression remain poorly understood. In our study, we define the regulatory components of the machinery that specifies selective PLD1 induction via signals propagated through PLD activity. We demonstrate for the first time that establishment of a positive feedback loop that is dependent on enzymatic activity originating from both PLD1 and PLD2 isozymes enhances selective expression of PLD1, but not PLD2. Phosphatidic acid, the product of PLO activity, leads to an increase in the Ras-ERK/PI3K-NF kappa B signaling cascade and enhances binding of NF kappa B to the PLD1 promoter, consequently inducing selective PLD1 expression in SK-BR3 breast cancer cells. Moreover, selective PLO inhibitor suppressed epidermal growth factor-induced matrix metalloproteinase upregulation and invasion by inhibiting PLD1 expression. In conclusion, we propose that autoregulation of PLD activity might be coupled to induction of PLD1 expression, and thereby play a role in carcinogenesis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available