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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.

CHANGCHUN, Nov. 13 (Xinhua) -- An infrared camera set up by the World Wildlife Fund (WWF) and forestry authorities in northeast China's Jilin province has captured images of a wild Siberian tiger in the Wanda Mountains.Zhu Jiang, head of the WWF Northeast China Program Office, said Saturday that the photos, taken earlier this month, are the first images of a wild Siberian tiger taken in the mountainous area.He said the evidence consolidates the mountains' role as an important habitat for the endangered species, and reinforces the need for local authorities to tighten protection measures, especially clearing animal traps and improving animal rescue efforts.The agency estimates that there are fewer than 20 wild Siberian tigers remaining in China. They live in mountains in the northeastern Heilongjiang and Jilin provinces.Zhu said animal traps still pose a major threat to the safety of wild Siberian tigers and their prey.A wild Siberian tiger was found dead with a trap around its neck in the city of Mishan, Heilongjiang, in October.A WWF survey found an average of 1.6 traps for every 10 km of distance covered in the Siberian tiger nature reserves in Heilongjiang and Jilin last winter."The WWF hopes to cooperate with local governments to protect Siberian tigers and restore their habitats," Zhu told Xinhua. "We aim to help double the population of wild Siberian tigers in China by 2022, the next Year of the Tiger," he said.

BEIJING, Nov. 9 (Xinhuanet) -- Kids with a depressed father tend to have more behavior issues than those with a happy father, a latest US study shows.The study, published in the journal Pediatrics, used data from home interviews with almost 22,000 families. All of them had a child aged between five and 17, and both a mother and father living at home, according to a Reuters report Tuesday.After analyzing the data, researchers found 11 percent of the children with a depressed father had problems at home or at school, whereas only six percent of those with a happy father had such problems.This is one of the first large-scale studies focusing on the connection between depressed fathers and children's behavior, said study author Michael Weitzman from the New York University School of Medicine.In addition, the study echoed the previous finding that mothers' depression could increase children's emotional and behavior problems.It was reported that 19 percent of the children in the study struggled emotionally and behaviorally if their mother was depressed."Parents who are depressed tend to engage less with their children, tend to display less positive behaviors, and display more harsh, negative and critical behaviors," said Jeremy Pettit, a psychologist not involved in the study, cited by Reuters.

BEIJING, Jan. 5 (Xinhua) -- Chinese media organizations on Thursday unveiled the top 10 domestic and international news events of 2011.The selection of news events, the eighth of its kind in China, was jointly carried out by 46 major online media providers, including people.com.cn and Xinhuanet.com.The following are the top 10 domestic news events of 2011:-- China launched a series of tough government measures to cool off the property market, including higher mortgage rates, a ban on third-home mortgage loans and purchase restrictions. The State Council, or China's Cabinet, introduced a policy package urging enhanced efforts to ensure the healthy development of the property sector and to promote the construction of affordable housing units for low-income families.-- More than 90 central government departments publicized their 2010 and 2011 spending on government-funded overseas travel, receptions and official cars upon an order issued after an executive meeting of the State Council in May.-- China's amended Criminal Law criminalized all drunk driving incidents starting May 1. The previous law imposed criminal penalties on drunk drivers only when they caused serious traffic accidents.-- Food safety scandals erupted in great number in 2011. Authorities busted farmers for adding clenbuterol, a known carcinogen, to pig feed in order to grow leaner pigs.-- In a speech delivered on July 1 at a ceremony marking the 90th founding anniversary of the Communist Party of China (CPC), Hu Jintao, general secretary of the CPC Central Committee, hailed the Party's achievements and stressed efforts for the future development of the country and the Party.-- On July 23, a high-speed train rammed into a stalled train near the city of Wenzhou in the eastern province of Zhejiang, leaving 40 dead and 191 injured.-- The launch and safe return of the Shenzhou-8 unmanned spacecraft marked the successful completion of China's first space docking mission, with the spacecraft docking with the Tiangong-1 space lab module.-- A gathering was held on Oct. 9 to commemorate the 100th anniversary of China's 1911 Revolution, which ended 2,000 years of imperial rule in the country by toppling the Qing Dynasty.-- The 17th Central Committee of the CPC concluded its sixth plenary session in October, adopting a landmark guideline for improving the nation's cultural soft power and promoting Chinese culture. The CPC Central Committee also pledged enhanced efforts to promote the healthy and positive development of Internet culture.-- Ethics and morality were heavily discussed in the public sphere, with two incidents stoking debate. In July, a woman in east China's city of Hangzhou caught a two-year-old girl who plunged from the window of a 10th-floor apartment, winning praise from people across the country. However, in late August, a bus driver in east China's Jiangsu province stopped to save an old woman who was hit by a three-wheeled vehicle, only to find himself held accountable for the accident.The following are the top 10 international news events of 2011:-- Strong turbulence was encountered by several countries in western Asia and northern Africa.-- On March 11, a 9.0-magnitude earthquake struck Japan and triggered a huge tsunami, killing over 15,000 people and causing radioactive leaks from several reactors at the Fukushima Daiichi nuclear power plant.-- On May 1, U.S. Navy commandos killed al-Qaida leader Osama Bin Laden in a cross-border raid at Abbotabad.-- On July 10, Rupert Murdoch's News International company closed its News of the World tabloid after it was accused of hacking the mobile phones of dead crime victims to access saved messages.-- With the world economy staggering under the European and U.S. debt crises, the Occupy Wall Street movement was launched on Sept. 17, protesting corruption and greed in the financial sector.-- Apple co-founder and longtime Chief Executive Officer Steve Jobs passed away in October at the age of 56 after years of fighting pancreatic cancer.-- On March 19, NATO launched airstrikes in Libya to impose a no-fly zone under a UN Security Council resolution. On Oct. 20, Libya's former leader Muammar Gaddafi was killed as his hometown of Sirte fell to rebel forces.-- A report published by the UN Population Fund showed that the world's population reached 7 billion on Oct. 31, 2011.-- On March 7, U.S. credit rating agency Moody's Investors Service downgraded the credit rating of the Greek sovereign debt to B1, marking the start of the European sovereign debt crisis and worsening the economic situation in the eurozone.-- Kim Jong Il, the top leader of the Democratic People's Republic of Korea (DPRK), died on Dec. 17, 2011 from "a great mental and physical strain."

HONG KONG, Oct. 13 (Xinhua) -- Computer and electronic device maker Lenovo, listed in both Hong Kong and New York, has replaced Dell to become the world's second largest personal computer company, Lenovo said Thursday.Lenovo made the remarks in a statement, citing figures released by International Data Corporation (IDC), a global provider of business intelligence for the consumer technology market.Following five quarters as the fastest-growing PC maker among the world's top vendors, the preliminary IDC data reported that Lenovo has achieved record market share of around 13.7 percent and record quarterly shipment volume of some 12.6 million units.Lenovo CEO Yang Yuanqing said his company had surpassed two competitors to capture the No. 2 spot in worldwide PCs in just two quarters and it was the highest rank that Lenovo has achieved in worldwide PC sales.Given current competitive environment, the new achievement positioned Lenovo as a strong challenger to ultimately become the global market leader, Yang said in the statement."We are growing in the enterprise and the consumer space. And our customers know we are fully committed to the PC market for the long term," he said.At the same time, the Chinese multinational would continue investing in innovative products that would help drive the convergence of technologies and services across all four screens -- smart phones, tablets, PCs and smart TV, Yang said."We must deliver a great user experience across all platforms to achieve our goal and become the leading personal technology company in the world."Lenovo is a personal technology company and a global Fortune 500 company with annual sales worth 21 billion U.S. dollars. It serves customers in more than 160 countries and regions.