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WASHINGTON, Dec. 12 (Xinhua) -- British scientists have discovered a new way to target cancer through manipulating a master switch responsible for cancer cell growth. The findings, published Monday in the U.S. journal Cancer Cell, reveal how cancer cells grow faster by producing their own blood vessels.Cancer cells gain the nutrients they need by producing proteins that make blood vessels grow, helping deliver oxygen and sugars to the tumor. These proteins are vascular growth factors like VEGF -- the target for the anti-cancer drug Avastin. Making these proteins requires the slotting together of different parts of genes, a process called splicing.Scientists at the University of West England and the University of Bristol discovered that mutations in one specific cancer gene can control how splicing is balanced, allowing a master switch in the cell to be turned on. This master switch of splicing makes cancer cells grow faster, and blood vessels to grow more quickly, as they alter how VEGFs are put together.In experimental models, the researchers found that by using new drugs that block this master switch they prevented blood vessel growth and stopped the growth of cancers."The research clearly demonstrates that it may be possible to block tumor growth by targeting and manipulating alternative splicing in patients, adding to the increasingly wide armory of potential anti-cancer therapies," the authors said.

WASHINGTON, Nov. 8 (Xinhua) -- NASA plans to add an unmanned flight test of the Orion spacecraft in early 2014 to its contract with Lockheed Martin Space Systems for the multipurpose crew vehicle's design, development, test and evaluation, the U.S. space agency announced Tuesday.This test supports the new Space Launch System (SLS) that will take astronauts farther into space than ever before, and provide the cornerstone for America's future human spaceflight efforts."President Obama and Congress have laid out an ambitious space exploration plan, and NASA is moving out quickly to implement it," NASA Associate Administrator for Communications David Weaver said in a statement. "This flight test will provide invaluable data to support the deep space exploration missions this nation is embarking upon."Orion is part of the now defunct Constellation program canceled under President Barack Obama's 2011 budget proposal. Instead Obama urged NASA to work toward sending humans to an asteroid and then on to Mars -- and NASA says it wants to go ahead with that as quickly as possible.This Exploration Flight Test, or EFT-1, will fly two orbits to a high-apogee, with a high-energy re-entry through Earth's atmosphere. Orion will make a water landing and be recovered using operations planned for future human exploration missions. The test mission will be launched from Cape Canaveral to acquire critical re-entry flight performance data and demonstrate early integration capabilities that benefit the Orion, SLS."The entry part of the test will produce data needed to develop a spacecraft capable of surviving speeds greater than 20,000 mph and safely return astronauts from beyond Earth orbit," Associate Administrator for Human Exploration and Operations William Gerstenmaier said. "This test is very important to the detailed design process in terms of the data we expect to receive."

BEIJING, Oct. 25 (Xinhua) -- Chinese State Councilor Dai Bingguo said Tuesday that China will unswervingly pursue a path of peaceful development and play a constructive role in the United Nations.Dai made the remarks at a reception commemorating the 40th Anniversary of the restoration of the lawful seat of the People's Republic of China in the United Nations (UN).On Oct. 25, 1971, the 26th Session of the UN General Assembly adopted Resolution 2758 with an overwhelming majority and decided to restore the lawful seat of the People's Republic of China in the UN."This opened a new chapter in the external relations of the People's Republic of China and promoted the friendship and cooperation between China and all countries and peoples who love world peace and justice," Dai said at the reception hosted by the Foreign Ministry in Beijing.It also enhanced the universality, representativeness and authority of the UN and strengthened the forces for world peace and human progress, he added.He said, for the past 40 years, as the largest developing country and a permanent member of the UN Security Council, China has followed the purposes and principles of the Charter of the United Nations, called on countries across the globe to practice tolerance and live together in peace as good neighbors, and made great contributions to world peace, common development and international cooperation.This year marks the beginning of the second decade of the new century, and the world has undergone great, rapid and drastic changes, Dai said."The international community is becoming a global village and countries find interests converging in a scope and depth never seen before," he said, adding that the trend of peace, development and cooperation has gained more popular support, while the international situation remains quite fluid and complex.He said the United Nations, as the most universal, representative and authoritative inter-governmental organization, should seize opportunities and meet challenges in the political, security, economic, development, social, humanitarian, cultural, arms control, and judicial fields, among others, and reinvigorate itself with fresh vigor and vitality."Under the new circumstance, the role of the UN should only be strengthened, rather than weakened, and its authority be upheld, rather than impaired," he said.China has released the White Paper on China's Peaceful Development, which solemnly declared that China will unswervingly pursue the path of peaceful development, he said.China will work actively, through peaceful, open, scientific and common development, to expand international cooperation, take part in international affairs, honor its due international responsibilities and obligations, and play a constructive role in the UN, he said.Dai pledged that China will join other countries to make even greater contributions to building a harmonious world of durable peace and common prosperity and a brighter future for mankind.China's entry to the UN 40 years ago made the international body a more representative international organization, said Kasymzhomart Tokaev, director-general of the UN Office at Geneva.He said China has played an important role in the UN.With the rise of its global status and influence, China, as a major power, will continue to shoulder its responsibility and play a more positive role in creating a more secure, just and peaceful world for future generations, he said.Before the reception, Dai had a brief meeting with Tokaev, exchanging views on the UN's role as well as China's cooperation within the UN.

BEIJING, Dec. 23 (Xinhua) -- The personal information of more than 6 million Internet users on CSDN, or China Software Developer Network, the country's largest programmers' website, was leaked by hackers, raising concerns about web security and triggering widespread panic.The leak was first exposed by China's leading anti-virus software provider, Beijing-based Qihoo 360, on Wednesday. The company said the leak included user IDs, passwords and e-mail addresses in clear text.The hacking case escalated on Thursday after the personal details of subscribers to more websites, including popular online gaming and social networking sites, were leaked.Online media reports said the personal data of up to 50 million Internet users has been leaked so far, but the number could not be independently verified.In response, the National Computer Network Emergency Response Technical Team/Coordination Center of China (CNCERT/CC) issued a statement Thursday, saying the CSDN's user data bank that leaked on the Internet was created before April 2009 and the passwords were stored in clear text, but the passwords had been encrypted after the data bank was upgraded in April 2009."Therefore, similar security problems have not been found in the newest user data bank," the statement said.Technical experts are investigating how many websites and users were actually involved in the hacking case, said Zhou Yonglin, director of the CNCERT/CC Operating Department."False information and exaggerations cannot be ruled out," he said.Nevertheless, CNCERT/CC has ordered CSDN to take immediate action in repairing the system hazards and providing users with timely security solutions.Computer security experts at Qihoo 360 believe the leak has spread to other websites."Many Internet users have registered the same passwords for their e-mail, microblog, online gaming and online payment accounts, so, if the server of one of the websites is hacked, their accounts and passwords on other websites would also be stolen," said Qihoo 360's Dr. Shi Xiaohong.Police authorities in Beijing told Xinhua on Friday that an investigation has been launched.WEB SECURITY IN QUESTIONDisgruntled Internet users in China rushed to change their passwords after the leak occurred, the largest of its kind in the history of China's Internet development."It is very annoying. I had to spend almost an hour changing the passwords of all my online accounts, especially those for payment accounts," said Li Xing, a white-collar worker at a technical company in Beijing.

SAN FRANCISCO, Nov. 3 (Xinhua) -- Hewlett-Packard Co. (HP) on Thursday introduced its Slate 2 Tablet PC, a business-targeted tablet computer running Windows operating system.Looking like the previous version, Slate 2, featuring an 8.9- inch screen, is upgraded with Intel Atom Z670 processor to deliver faster boot times and improved battery life up to six hours, said HP.It also has a Bluetooth keyboard dock and Swype keyboard which allows users to enter words by sliding a finger or stylus from letter to letter, lifting only between words.The device will be available to customers worldwide for 699 U.S. dollars later this month, according to HP.Slate 500, Slate 2's previous generation running Windows, was introduced last October and sold exclusively to businesses for 800 dollars upon launch.HP said in a statement that the Slate 2 tablet provides instant deployment for business and vertical markets such as education, healthcare, government and retail, where jobs frequently take users away from a traditional desk.The company on Thursday also announced HP 3115m, a new notebook PC targeting business, education and government customers. The notebook will be available in the Americas only next Friday with prices staring at 429 dollars.HP's consumer-oriented tablet TouchPad was killed off in August before former chief executive officer Leo Apotheker resigned. A dropped price from 499 to 99.99 dollars has made the unpopular device sold out in stores across the U.S. and Canada in days.Last Thursday, HP announced it will keep its PC business, saying it will build tablets running Microsoft's upcoming Windows 8 system in 2012.