Immagine
 Trilingual World Observatory: italiano, english, română. GLOBAL NEWS & more... di Redazione
   
 
\\ Home Page : Articolo
A new, finely tuned light-based treatment kills cancer cells in mice without harming the tissue around them, and could conceivably used to treat a wide range of human cancers, researchers say.
By Admin (from 23/01/2012 @ 08:05:46, in en - Global Observatory, read 1142 times)

The therapy is much more precise than other light-therapy methods attempted to date, and it has the potential to replace chemotherapy and radiation.

Researchers at the National Cancer Institutecoupled cancer-specific antibodies with a heat-sensitive dye that damages cells when exposed to specific wavelengths of light. The antibodies recognize proteins on the exterior of cancer cells, so they would easily and accurately seek out their quarry, leaving healthy cells alone. Once bound to the cancer, the antibodies’ piggyback heat-sensitive molecule could be activated to do its job.

Led by Hisataka Kobayashi, researchers worked with several photosensitizers (light-activated molecules) before settling on one called IR700. It activates in near-infrared light and has the added bonus of fluorescence, so the researchers could easily watch its progress. They attached it to three cancer antibodies that bind to three different proteins: HER2, which is over-expressed by some breast cancers; EGFR, which is over-expressed by some lung, pancreatic, and colon cancers; and PSMA, which is over-expressed by prostate cancers.
Working with mice that had been implanted with tumors, the researchers say the cancer cells bound to the protein antibodies, and when they were exposed to infrared light, the cells died. Even a single dose of IR light made a significant difference, as the image at the top shows. Infrared light has the added benefit of penetrating several centimeters into tissue, much deeper than other wavelengths, the researchers say.

One key thing about this therapy is its selectivity, the researchers say. While other light-therapy methods can damage healthy tissue, just like radiation and chemotherapy can, this method only targets cells that are over-expressing proteins associated with certain types of cancer.
Much more work needs to be done to verify that this can work in humans — for instance, the breast cancer protein used in this study is only present in less than half of breast cancers — but the team says their method shows promise.

Source: Popular Science

Articolo Articolo  Storico Storico Stampa Stampa  Share
Cannabis seeds, Autoflowering seeds, Greenhouse, Sweet Seeds, Dutch Passion
comments powered by Disqus
 
Nessun commento trovato. No comments found. Nici un comentariu găsit.

Anti-Spam: dial the numbers CAPTCHA
Text (max 5000 characters)
Nome - Name - Nume
Link ( OPTIONAL - visible on the site - NOT a must )


Disclaimer
Tuo commento sarŕ visibile dopo la moderazione. - Your comment will be visible after the moderation. - Comentariul tău va fi vizibil după moderare.
Ci sono 2970 persone collegate

< dicembre 2019 >
L
M
M
G
V
S
D
      
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
         

Titolo
en - Global Observatory (605)
en - Science and Society (594)
en - Video Alert (346)
it - Osservatorio Globale (503)
it - Scienze e Societa (555)
it - Video Alerta (132)
ro - Observator Global (399)
ro - Stiinta si Societate (467)
ro - TV Network (149)
z - Games Giochi Jocuri (68)

Catalogati per mese - Filed by month - Arhivate pe luni:

Gli interventi piů cliccati

Ultimi commenti - Last comments - Ultimele comentarii:
Hi, it's Nathan!Pretty much everyone is using voice search with their Siri/Google/Alexa to ask for services and products now, and next year, it'll be EVERYONE of your customers. Imagine what you are ...
15/01/2019 @ 17:58:25
By Nathan
Now Colorado is one love, I'm already packing suitcases;)
14/01/2018 @ 16:07:36
By Napasechnik
Nice read, I just passed this onto a friend who was doing some research on that. And he just bought me lunch since I found it for him smile So let me rephrase that Thank you for lunch! Whenever you ha...
21/11/2016 @ 09:41:39
By Anonimo


Titolo

Latest NEWS @
www.TurismoAssociati.it

Non-Hodgkin lymphoma cured by CANNABIS. The video of Stan and Barb Rutner.

Dr. Joycelyn Elders, U.S. surgeon general: Myths About Medical Marijuana in The Providence Journal, 2004.

Marihuana vindeca CANCERUL: marturii despre uleiul de cocos si canabis.

Yahoo Incorporated Mail. My account recovery information is incorrect. The Password Helper says my password can't be reset online. "First time signing in here?" message.

All information in a video about Donatio Mortis Causa and The Venus Project

What is TOR browser?

NASA's probe soaring near sun reveals surprises about solar wind

U.S. trade deficit hits 1-1/2-year low; weekly jobless claims fall

Japanese doctor made the Afghan deserts green, until deadly attack

Saudi Aramco prices shares at top of range in world's biggest IPO: sources

Pelosi says Democrats will draft articles of impeachment against Trump

U.S. House to draft impeachment charges against Trump: Pelosi

Ultimele articole - Antena3.roNeîn?elegeri între pre?edintele Iohannis ?i Ludovic Orban, pe asumarea legii bugetului

Ministrul de Interne continua „ac?iunile de cura?enie” în MAI. Ce le transmite poli?i?tilor

Vame?ii au oprit la întâmplare o tânara într-o ma?ina în Vama Giurgiu. Când au perchezi?ionat femeia, au ramas ?oca?i. Aceasta ?i-a dat jos bluza ?i atunci a ie?it la iveala totul: Erau cu sutele de mii!

TESTUL PISA. Cum po?i afla u?or daca e?ti sau nu analfabet func?ional. Doua modele de test PISA, din 2009 ?i 2015

HOROSCOP special. Jupiter în Scorpion 2 decembrie 2019 – 20 decembrie 2020. Schimbari radicale pentru zodii! Racii cunosc oameni cu impact asupra vie?ii lor, Balan?ele fac schimbari în via?a lor

PROGNOZA METEO. Cum va fi vremea în weekend





05/12/2019 @ 16:24:42
script eseguito in 779 ms