Navigation Links
St. Jude Finds Mechanism for Faulty Protein Disposal
Date:12/6/2007

Discovery shows how a group of molecules pulls certain types of defective proteins out of the cell's protein factory, a finding that could help development of new cancer drugs

MEMPHIS, Tenn., Dec. 6 /PRNewswire-USNewswire/ -- A discovery by St. Jude Children's Research Hospital scientists offers new insights into how myeloma cells dispose of defective or excess proteins and could lead to new cancer treatments.

The researchers identified key cellular components that carry out protein disposal, a finding that helps to explain how cancer drugs called proteasome inhibitors interfere with this process. The discovery is important because the newly identified components of the protein disposal mechanism could be targets for novel cancer drugs designed to kill the cell by blocking disposal of defective proteins. A report on this work appears in the Nov. 30 issue of "Molecular Cell."

Myelomas are cancers of plasma cells, which are the "activated" form of B lymphocytes--immune system cells that respond to infection by temporarily producing extremely large amounts of proteins called antibodies that attack the target. The rapidly multiplying cancer cells continually make large numbers of new antibodies, which increases the chance for errors in the production process, resulting in the accumulation of defective proteins that must be degraded.

"Proteasome inhibitors are currently being used to treat some types of cancer including multiple myelomas, although many aspects of this cellular process remain poorly understood," said Linda Hendershot, Ph.D., a member of the St. Jude Department of Genetics and Tumor Cell Biology, and the paper's senior author.

"The results of our study help to explain how the process works and how we might design ways to block it in myelomas," said Yuki Okuda-Shimizu, Ph.D. a postdoctoral fellow in Hendershot's laboratory who contributed significantly to the project.

This work was supported by the National Institutes of Health, a Cancer Center Support Grant and ALSAC.

St. Jude Children's Research Hospital

St. Jude Children's Research Hospital is internationally recognized for its pioneering work in finding cures and saving children with cancer and other catastrophic diseases. Founded by late entertainer Danny Thomas and based in Memphis, Tenn., St. Jude freely shares its discoveries with scientific and medical communities around the world. No family ever pays for treatments not covered by insurance, and families without insurance are never asked to pay. St. Jude is financially supported by ALSAC, its fundraising organization. For more information, please visit http://www.stjude.org.


'/>"/>
SOURCE St. Jude Children's Research Hospital
Copyright©2007 PR Newswire.
All rights reserved

Related medicine news :

1. Penn study finds pro-death proteins required to regulate healthy immune function
2. MRI finds breast cancer before it becomes dangerous
3. RAND finds cases of undiagnosed diabetes drop sharply
4. Children of depressed moms do better when dad is involved, SLU researcher finds
5. Ability to cope with stress can increase good cholesterol in older white men, study finds
6. Pitt study finds inequality in tobacco advertising
7. Study finds some kids are being misdiagnosed with asthma
8. Investigational Agent Targeting Metabotropic Glutamate 2/3 Receptors Demonstrates Antipsychotic Activity in Humans, Study in Nature Medicine Finds
9. Parents perceptions can hamper kids asthma care, study finds
10. Study finds primary care depression treatment often does not follow quality guidelines
11. Study of Studies Finds No Risk to Children From Phthalates in Toys
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/25/2017)... (PRWEB) , ... April 25, ... ... based in Newport Beach, California, committed to raising awareness for Duchenne muscular ... results from its randomized CAP-1002 (cardiosphere-derived cells) Phase I/II HOPE clinical trial ...
(Date:4/25/2017)... ... April 25, 2017 , ... As President Trump challenges ... for how his administration could impact the employee benefits industry. James Slotnick, AVP, ... most likely to make it through Congress. His discussion will focus on the ...
(Date:4/25/2017)... ... April 25, 2017 , ... The doctors at Wall Centre Dental ... with dental fear and require sedation to receive dental care. The doctors offer three ... procedures, from hygienic cleanings to oral surgery, at their dental office in Vancouver. Wall ...
(Date:4/25/2017)... ... April 25, 2017 , ... Patients who would like ... in a fraction of the time as traditional braces – Wilckodontics®. Dr. Victoria ... now offers this revolutionary treatment with or without a referral. , Wilckodontics ...
(Date:4/25/2017)... ... April 25, 2017 , ... ... in unveiling cutting-edge birth defects research related to Zika virus during pregnancy, as ... premier society for this important science. , The Teratology Society ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)... 2017 Companion animal ... in pets such as canine, avian and feline. ... types such as Attenuated Live Vaccines, Conjugate Vaccines, ... and Recombinant Vaccines. Attenuated live vaccines are derived ... which have been weakend under laboratory conditions. Conjugate ...
(Date:4/19/2017)... , April 19, 2017  SARES•REGIS Group leased ... is developing at Conejo Spectrum Business Park in ... Atara Biotherapeutics, Inc. , a biopharmaceutical company ... life-threatening diseases that have been underserved by scientific ... therapies for cancer, autoimmune and infectious disease. ...
(Date:4/18/2017)... , April 18, 2017 Viverae ® , ... announce the integration of IBM ® Watson Campaign ... deliver targeted communications for a personalized experience. Through digital ... on their health in real time. The enhanced experience ... most to members, wherever they are in their journey ...
Breaking Medicine Technology: