Navigation Links
Researchers Develop Basis For Experimental Melanoma Treatment

Two grantees of the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), unexpectedly //discovered a potential strategy for treating metastatic melanoma, while investigating a fungus known to cause an infection in people with AIDS.

Metastatic Melanoma is one of the deadliest forms of skin cancer. The treatment approach, which involves combining an antibody with radiation, has since been further developed and is expected to enter early-stage human clinical studies in 2007.

"This is an excellent example of how scientific research in one discipline may have payoffs in a completely unpredictable way," says NIAID Director Anthony S. Fauci, M.D. "This important AIDS-related research has led to the development of a promising therapeutic strategy for a terrible cancer that affects thousands of people each year."

Arturo Casadevall, M.D., Ph.D., of the Albert Einstein College of Medicine at Yeshiva University, in New York City, and his research team began studying the biology of the skin pigment melanin to better understand why its synthesis plays a role in the process whereby certain yeast-like fungi, specifically Cryptococcus neoformans, cause disease in some people. C. Neoformans can cause cryptococcosis, a potentially fatal fungal infection that can lead to inflammation of the brain and death in people with AIDS and other immunocom promised individuals.

The researchers created an infection-fighting antibody, known as a monoclonal antibody that binds to melanin based on scientific evidence suggesting that when melanin is synthesized, it causes the immune system to react in a way that might create antibodies to fend off C. neoformans infection. Based on this finding, Dr. Casadevall theorized that melanomas might contain melanin that would allow the monoclonal antibody to deliver radiation to tumor cells. Dr. Casadevall then teamed with his colleague Ekaterina Dadachova, Ph. D., an expert in nuclear medicine and fellow NIAID grantee, to investigate whether the melanin-binding antibody could be converted into an anti-tumor drug.

In a study published in October 2004, Dr. Casadevall and Dr. Dadachova, the study's lead author, combined the C. neoformans monoclonal antibodies with radiation to create radiolabeled antibodies. They then tested these radiolabeled antibodies in mice to determine their effectiveness in attacking melanoma tumors. Initially, the mice had melanoma tumors ranging from 0.6 to 1.0 centimeters (cm) in diameter. After receiving a single dose of the radiolabeled antibodies, tumor growth was completely inhibited and near total tumor regression occurred in those animals with smaller tumors (0.6 to 0.7 cm in diameter). Further, the treated mice showed no signs of kidney or other organ damage and none died during the 30-day study. Conversely, tumors continued to aggressively grow in the untreated control group and by day 20, all but one of the eight untreated mice had died.

In November 2006, Pain Therapeutics, Inc., a San Francisco-based biopharmaceutical company, licensed the radiolabeled monoclonal antibody technology from the Albert Einstein College of Medicine. The company intends to begin testing it as a metastatic melanoma treatment in small human clinical trials in 2007. According to the American Cancer Society, melanoma accounts for approximately five percent of all skin cancers but causes roughly 75 percent of all skin cancer-related deaths.

Dr. Casadevall credits his promising discovery to luck and a hunch that paid off. "Scientific breakthroughs often occur completely through serendipity, and this is just one of those instances," says Dr. Casadevall. "We're still working on cryptococcosis and developing a general strategy for using radiolabeled monoclonal antibodies to fight infectious diseases."

His laboratory continues to examine the underlying causes of cryptococcosis, and in continued collaboration with Dr. Dadachova, is exploring the use of radiolabeled monoclonal antibodies to treat infectious diseases.

Source-Eurekalert
SRI
'"/>




Related medicine news :

1. Researchers urge caution in using ear tube surgery
2. Researchers Scale to assess the Severity of Epilepsy in Kids
3. Researchers trick Alzheimers Enzyme
4. Researchers find new HIV hiding place
5. New Hair in 15 Days Could Now Be A Possibility Say Researchers
6. Researchers developed world’s smallest toothbrus
7. Researchers discover receptor cells that can cause epilepsy
8. 15 Anti-SARS Drugs Identified By China-Europe Team of Researchers
9. Researchers reversed the process of memory loss
10. Researchers Identify Key Gene That May Help Brain Treatment
11. Researchers Discover Protein That Causes Malaria
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/25/2017)... , ... June 25, 2017 , ... CareSet Labs released ... in New Orleans. This is a new, greatly improved version of the Doctor Referral ... (FOIA) requests by Fred Trotter and subsequently called the the “Doctor Referral Dataset” as ...
(Date:6/25/2017)... ... June 25, 2017 , ... June is Men’s Health Month and the ... common cancer among men in the U.S. and the third most common cause of cancer ... that one man in seven will be diagnosed with prostate cancer during his lifetime. ...
(Date:6/24/2017)... (PRWEB) , ... June 24, 2017 , ... ... in Erie, PA at the Sheraton Erie Bayfront and Erie Convention Center on ... based medicine experience, exhibits, a student quiz bowl, award and scholarship presentations, and ...
(Date:6/24/2017)... ... June 24, 2017 , ... The weather is heating up and ... and business owners should be aware that the summer months provide more than warmer ... locks and keys can be negatively affected from direct exposure to the sun. When ...
(Date:6/23/2017)... ... June 23, 2017 , ... The Rhode Island Quality ... Management Alerts and Dashboards, an innovative new service enabling healthcare providers to proactively ... Management Alerts and Dashboards provide near real-time data about patients admitted to and/or ...
Breaking Medicine News(10 mins):
(Date:6/3/2017)... June 3, 2017  Eli Lilly and Company ... results from the Phase 3 MONARCH 2 study ... 6 inhibitor, in combination with fulvestrant, significantly improved ... alone in women with hormone-receptor-positive (HR+), human epidermal ... who have relapsed or progressed after endocrine therapy ...
(Date:5/30/2017)... Corp. (NASDAQ: DRIO), a leading global digital health company with mobile ... presenting at the 7th annual LD Micro Invitational on Tuesday, June ... of DarioHealth will be giving the presentation and meeting with investors. ... 7th, 2017 at the Luxe Sunset Bel Air Hotel and will ... About LD Micro LD Micro was founded ...
(Date:5/29/2017)... TEL AVIV, Israel, May 29, 2017  Cellect Biotechnology ... of innovative technology which enables the functional selection of ... financial results for the first quarter ended March 31 ... pleased with our accomplishments in the first quarter of ... the first quarter, we announced the treatment of the ...
Breaking Medicine Technology: