Navigation Links
Mayo Clinic moves small-molecule drugs through blood-brain barrier
Date:6/4/2014

ROCHESTER, Minn. Researchers at Mayo Clinic have demonstrated in a mouse model that their recently developed synthetic peptide carrier is a potential delivery vehicle for brain cancer chemotherapy drugs and other neurological medications. The findings appear in PLOS ONE.

"Not only have we shown that we can transport eight different molecules, we think this method will be less disruptive or invasive because it mimics a normal physiological process," says Mayo Clinic neuroscientist Gobinda Sarkar, Ph.D., the corresponding author of the study. The researchers are able to transport the drugs without modifying any of the molecules involved. They say this development will aid in evaluation of potential new drugs for brain cancer.

The blood-brain barrier is meant to protect the brain from numerous undesirable chemicals circulating in the body, but it also obstructs access for treatment of brain tumors and other conditions. Too often the only recourse is invasive, which often limits a drug's effectiveness or causes irreversible damage to an already damaged brain. Nearly all of the drugs that could potentially help are too large to normally pass through the barrier. Additionally, other methods may damage the vascular system.

In this case, the synthetic peptide K16ApoE, once injected into a vein, binds to proteins in the blood to create entities that can pass for near-normal ligands to some receptors present on the blood-brain barrier. The 'pseudo-ligand' receptor interaction creates what the researchers believe to be transient pores through which various molecules can be transported to the brain. The molecules they've transported in this manner include cisplatin, methotrexate, cetuximab, three different dyes, and synthetic peptides Y8 and I-125. The researchers believe this is the least complicated, least expensive and most versatile method for delivering therapeutics to the brain. Previously, the researchers delivered antibodies targeted against amyloid plaques into the brains of mouse models of Alzheimer's disease using this same method.

"We know that some chemotherapeutic agents can kill brain tumor cells when they are outside the brain (as in a laboratory test). But because the agents cannot cross the blood-brain barrier, they are not able to kill brain tumor cells inside the brain. With the peptide carrier, these agents can now get into the brain and potentially kill the tumor cells," says Mayo neurology researcher Robert Jenkins, M.D., Ph.D., senior author of the study.

The researchers say their method, which has been successfully demonstrated in mice, meets three of five requirements for a usable therapy: It's feasible as a repeated procedure; it should be relatively easy to introduce into medical practice; and it would work for any size or location of brain tumor. More research will need to be done to prove effectiveness and determine any adverse effects.


'/>"/>

Contact: Robert Nellis
newsbureau@mayo.edu
507-284-5005
Mayo Clinic
Source:Eurekalert

Related medicine news :

1. Lower GI problems plague many with rheumatoid arthritis, Mayo Clinic study finds
2. First targeted nanomedicine to enter human clinical studies
3. Clinical insight improves treatment with new lung cancer drug
4. Clinical news alert from the American Academy of Orthopaedic Surgeons
5. Mayo Clinic launches whole genome breast cancer study
6. Mayo Clinic offers newly approved treatment for acid reflux disease
7. NYU Langone experts present research, clinical advances at neurosurgeons meeting
8. Mayo Clinic breast cancer study finds new type of mutation
9. Kroenke honored for outstanding contributions in clinical research training
10. Awards celebrate clinical research that can improve health and alleviate suffering
11. Association for Psychological Science, SAGE launch Clinical Psychological Science
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2017)... Simi Valley, CA (PRWEB) , ... June 27, 2017 , ... ... deployed since 2001 suffer from PTSD. Yet less than 20% will receive adequate care ... of those with PTSD won't receive any care at all. And left untreated, veterans ...
(Date:6/26/2017)... (PRWEB) , ... June 26, 2017 , ... Antoine Dental Center is now ... standard in tooth replacement and act as a support for prosthetic teeth, such as crowns, ... the existing bone and becomes a sturdy, lasting new root for the tooth. , ...
(Date:6/26/2017)... Lake Tahoe, CA (PRWEB) , ... June 26, 2017 , ... ... seeking 10,000 qualified mental health professionals in every state across the country to join ... an easy and rewarding way for therapists to reach a substantially greater number of ...
(Date:6/25/2017)... ... , ... Create a feel-good lyric music video in Final Cut Pro X with ProLyric from ... write in the lyrics to any song. ProLyric flies in the text for each section ... can be added modularly for optimal control. ProLyric makes editing any music video or text-based ...
(Date:6/25/2017)... , ... June 25, 2017 , ... June is Men’s Health Month and ... most common cancer among men in the U.S. and the third most common cause of ... estimated that one man in seven will be diagnosed with prostate cancer during his lifetime. ...
Breaking Medicine News(10 mins):
(Date:6/5/2017)... June 5, 2017 The Cincinnati ... Diplomat Pharmacy, Inc. (NYSE: DPLO), has been awarded a ... . Results are based on an employee survey ... health and workplace improvement. The survey measures several aspects of ... ...
(Date:5/30/2017)... , May 30, 2017 DarioHealth Corp. (NASDAQ: DRIO), ... data solutions, today announced that it will be presenting at the ... 8:00 AM PT. Erez Raphael , CEO, of DarioHealth will ... conference will be held on June 6th & 7th, 2017 at ... in the small / micro-cap space. ...
(Date:5/26/2017)... 25, 2017  In response to the opioid epidemic ... Relief is working with Pfizer to make up to ... cost to community health centers, free and charitable clinics, ... "Pfizer has a long-standing commitment to improving ... patient safety through educational activities," said Caroline Roan ...
Breaking Medicine Technology: