They found out how NPTX2 and GluR4 promote cancer growth and metastasis. In kidney cancer, the over expressed NPTX2 protein is secreted from the cell and then attaches itself to GluR4 on the kidney cancer cell membrane.
Their study, published in Cancer Research, reveals that the gene NPTX2, plays an essential role in this cancer type, which is resistant to common chemotherapy and has a five year overall survival rate of less than 10 percent in patients with metastatic disease.
"Nobody ever looked for NPTX2 as a potential tumor promoter in kidney cancer or any other cancer, from what we can tell," says Dr. Radisky. "Before this study, the concept that it could even play a role in cancer had not been suspected."
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The researchers also discovered that a receptor known as GluR4 that the NPTX2 protein usually targets in the brain is also found in the kidney cancer samples.
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This work was funded in part from the National Institutes of Health / National Cancer Institute grants R01CA104505, R01CA136665 and R01CA104505 05S1; a gift from the David Lois Stulberg Endowed Fund for Kidney Cancer Research; Francis and Miranda Childress Foundation Fund for Cancer Research; John A. and Bette B. Klacsmann Fund for Cancer Research at Mayo Clinic in Florida; Betty G. Castigliano Fund in Cancer Research Honoring S. Mr. and Mrs. Ompal Chauhan Research Fund; Kidney Cancer Research at Mayo Clinic in Florida; James C. and Sarah K. Kennedy Mayo Clinic Research Career Development Award for Clinicians; Scheidel Foundation; Fraternal Order of Eagles Florida State Auxiliary; and a grant for rare cancers from Miu Miu Dupe Sunglasses
NPTX2 causes multiple GluR4 proteins to unite and form a channel into the cell, which allows calcium to flow in. "Elevated calcium triggers multiple signaling pathways that promote cell doubling, survival and changes in the cell that promote cancer invasion and metastasis," says Dr. Copland.
Dr. Ellis and Dona Brunton.
this group they determined NPTX2 was a key gene to cancer viability.
The study not only shows that NPTX2 is active in kidney cancer, but is the first to reveal that the gene is over expressed in any human cancer. The researchers are now looking whether NPTX2 may act in other cancers.
Investigators found that NPTX2 was expressed in all stages of kidney cancer, especially metastasis, which suggests it plays an important role in tumor development and progression. Its expression could be used as a biomarker test to ensure patients might benefit from an NPTX2 inhibitor, when one Miu Miu Reading Glasses 2017
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"We don't know why NPTX2 is expressed in kidney cancer, but we now know what it is doing and how it contributes to cancer progression," he says. "We also have very promising ideas about how to attack the NPTX2 protein which may provide a much needed new strategy to treat this kidney cancer."
"We found that a gene known to play a role in the healthy brain is also the No. 1 gene associated with this most lethal of all urological cancers," says the study's senior investigator and molecular biologist John A.
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Blocking the GluR4 channels caused the cancer cells to die, highlighting a possible avenue of therapy.
Mayo Clinic Researchers Say Gene In Brain Linked To Kidney Cancer
Because the NPTX2 gene is not expressed in normal kidney tissue, a drug designed to target its protein would provide a highly focused treatment, Dr. Copland says. The team is working on several different approaches to an NPTX2 inhibitor. Von Roemeling and the research Miu Miu 2017 Bag Collection team then individually silenced each of the top 200 altered genes to see the effect on tumor growth. They found 31 genes were important to growth of the cancer or its ability to survive, and from Miu Miu Bag Sale Singapore
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