Navigation Links
Tiny capsule effectively kills cancer cells

A tiny capsule invented at a UCLA lab could go a long way toward improving cancer treatment.

Devising a method for more precise and less invasive treatment of cancer tumors, a team led by researchers from the UCLA Henry Samueli School of Engineering and Applied Science has developed a degradable nanoscale shell to carry proteins to cancer cells and stunt the growth of tumors without damaging healthy cells.

In a new study, published online Feb. 1 in the peer-reviewed journal Nano Today, a group led by Yi Tang, a professor of chemical and biomolecular engineering and a member of the California NanoSystems Institute at UCLA, reports developing tiny shells composed of a water-soluble polymer that safely deliver a protein complex to the nucleus of cancer cells to induce their death. The shells, which at about 100 nanometers are roughly half the size of the smallest bacterium, degrade harmlessly in non-cancerous cells.

The process does not present the risk of genetic mutation posed by gene therapies for cancer, or the risk to healthy cells caused by chemotherapy, which does not effectively discriminate between healthy and cancerous cells, Tang said.

"This approach is potentially a new way to treat cancer," said Tang. "It is a difficult problem to deliver the protein if we don't use this vehicle. This is a unique way to treat cancer cells and leave healthy cells untouched."

The cell-destroying material, apoptin, is a protein complex derived from an anemia virus in birds. This protein cargo accumulates in the nucleus of cancer cells and signals to the cell to undergo programmed self-destruction.

The polymer shells are developed under mild physiological conditions so as not to alter the chemical structure of the proteins or cause them to clump, preserving their effectiveness on the cancer cells.

Tests done on human breast cancer cell lines in laboratory mice showed significant reduction in tumor growth.

"Delivering a large protein complex such as apoptin to the innermost compartment of tumor cells was a challenge, but the reversible polymer encapsulation strategy was very effective in protecting and escorting the cargo in its functional form," said Muxun Zhao, lead author of the research and a graduate student in chemical and biomolecular engineering at UCLA.

Tang's group continues to research ways of more precisely targeting tumors, prolonging the circulation time of the capsules and delivering other highly sought-after proteins to cancer cells.

The research team also included former UCLA Engineering student Zhen Gu, now an assistant professor in the joint biomedical engineering department at the University of North Carolina at Chapel Hill and North Carolina State University, and University of Southern California researchers including graduate student Biliang Hu, postdoctoral scholar Kye-Il Joo and associate professor Pin Wang.

The Nano Today paper also will be published in a future print edition of the journal.


Contact: Bill Kisliuk
University of California - Los Angeles

Related medicine news :

1. Everyday fish oil capsule may provide kidney-related benefits
2. Evidence that new biomimetic controlled-release capsules may help in gum disease
3. Capsule Endoscopy (Smart/Digital Pills) Market is expected to grow at a CAGR of 17% & to reach $965 Million by 2017 - by MarketsandMarkets
4. Breast cancer effectively treated with chemical found in celery, parsley by MU researchers
5. First-of-its-kind approach nanomedicine design effectively targets cancer with decreased toxicity
6. Unveils PhenObestin 37.5 to Offset Obesity Effectively
7. Increase Height Naturally
8. Can “Grow Taller 4 Idiots” Help People Boost Their Height Effectively – Health Review Center
9. Burn Fat Fast
10. How "30 Days To Thin" Helps People Melt Fat Naturally and Effectively - Tony Nguyen
11. Candida Treatment
Post Your Comments:
(Date:11/29/2015)... ... November 29, 2015 , ... Key Housing, a top-rated corporate housing ... December, 2015, featured apartment community: Epic. In showcasing this featured apartment community in San ... Bay Area rental market to efficiently find housing suitable to their needs by showcasing ...
(Date:11/28/2015)... ... November 28, 2015 , ... Pixel Film Studios is back ... to choose from, the possibilities are endless. Users have full control over angle of ... Pulse masking effects, users are sure to get heads to turn. , ProPanel: Pulse ...
(Date:11/27/2015)... ... November 27, 2015 , ... ... health care in America. As people age, more care is needed, especially with ... rising, and medical professionals are being overworked. The forgotten part of this equation: ...
(Date:11/27/2015)... ... ... The print component of “Supporting Our Caregivers” is distributed ... Minneapolis, South Florida, with a circulation of approximately 250,000 copies and an estimated ... media strategy and across a network of top news sites and partner media ...
(Date:11/27/2015)... ... November 27, 2015 , ... A simply groundbreaking television series, ... interesting show that delves into an array of issues that are presently affecting Americans. ... from open dialogue, this show is changing the subjects consumers focus on, one episode ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... SAN FRANCISCO , November 26, 2015 ... 1.82 billion by 2022, according to a new report by ... as Chronic Kidney Disease (CKD) which demands kidney transplantation is ... convenient and cost effective substitute for organ transplantation. --> ... 1.82 billion by 2022, according to a new report by ...
(Date:11/26/2015)... ) has ... Future Horizons and Growth Strategies in the ... Shares, Country Segment Forecasts, Competitive Intelligence, Emerging ... --> ) has announced the ... and Growth Strategies in the German Drugs ...
(Date:11/26/2015)... 26, 2015 ... adds "Global Repaglinide Industry 2015 ... on China Repaglinide Market, 2010-2019" reports ... and information to its online business ... . --> ...
Breaking Medicine Technology: