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WELLINGTON, May 24 (Xinhua) -- New Zealand researchers have found a way to stop the growth of certain cancer tumors by " silencing" a group of PAX genes, members of a small family of genes that play important roles in embryonic development, but also allow cancer cells to grow and divide in adult tissue.In an article published in UK medical journal Oncogene, Otago University Professor Michael Eccles and colleagues revealed how they used the PAX8 gene to kill cancer cells.After detecting high levels of PAX8 protein in the majority of kidney, ovarian and thyroid cancers they studied, the researchers used molecular techniques to silence the PAX8 gene in several cancer cell lines."We found that these PAX8-depleted cancer cells ceased growing and dividing. The cells were essentially stopped in their tracks through the failure of multiple mechanisms and pathways crucial to their cell division cycle. They then entered into a state called senescence in which they no longer divided, and after that they ultimately died," Eccles said in a statement from the university Tuesday.The findings suggested that PAX8 could be a good target for the development of new cancer therapies, he said."Any resulting drugs would be a long way down the road, but in the meantime this research helps confirm that a focus on PAX genes may prove to be a fruitful line of attack against a number of cancers," he said.The research was supported by grants from the Health Research Council of New Zealand. It formed the main piece of work carried out by Otago doctoral graduate Caiyun (Grace) Li, now a postdoctoral fellow at Stanford University. Study co-authors also included Professor Antony Braithwaite and master's student Jen Nyman.In 2003, research led by Eccles discovered that proteins from one or more of the nine PAX genes were present in many common cancers. They found that "silencing" the gene expression of PAX2 in ovarian and bladder cancer cells, and of PAX3 in melanoma, led to the rapid death of the cells.

BEIJING, Feb. 26 (Xinhua) -- Zhu Guangya, who contributed to the development of China's first atom and hydrogen bombs, died Saturday at age 87.Zhu was a senior academician at the Chinese Academy of Sciences and the Chinese Academy of Engineering. He served as vice chairman of the National Committee of the Chinese People's Political Consultative Conference, China's top political advisory body, between 1994 and 2003.Born in central China's Yichang city, Zhu obtained a PhD in nuclear physics from the University of Michigan in 1950. That year he returned to China. He joined the Communist Party of China in 1956.

BEIJING, March 19 (Xinhua) -- Radiation leaks following explosions at the Fukushima Daiichi nuclear power plant in Japan will not affect China's environment and the health of its citizens during the next three days, authorities said Saturday.China's National Nuclear Emergency Coordination Committee made the announcement based upon analyses of environmental monitoring, meteorological forecasts, and ocean currents.The Beijing-based Regional Specialized Meteorological Center, which is affiliated with the World Meteorological Organization, issued its forecast on Saturday afternoon, saying that the radioactive leakages in Japan would not affect China over the next three days.The country's State Oceanic Administration on Saturday announced that no abnormalities were detected in terms of atmospheric radiation over the East China Sea, the northern part of the South China Sea, and the central and northern regions of the Yellow Sea.The administration predicts that the ocean currents near Fukushima would mainly travel eastward from Japan over the next three days.Furthermore, the country's Ministry of Environmental Protection announced that China's environment remains normal based upon the monitoring of radiation levels.

KUALA LUMPUR, Feb. 3 (Xinhua) -- Malaysian Prime Minister Najib Razak wishes all Chinese in the world a happy Chinese New Year on Thursday in an exclusive interview with Xinhua News Agency at his official residence in Federal Administrative Center Putrajaya."I would like to wish all Chinese in the world, wherever they are at any part of the world, a very happy Chinese New Year through Xinhua News Agency,"Najib said. "I hope that this new lunar calendar year, the year of the Rabbit will bring much prosperity and will be a successful and productive year."Najib also noted the 36-year-old special ties between Malaysia and China - a relationship which was first established by his father Abdul Razak, the second prime minister of Malaysia.He stressed that Malaysia is determined to forge closer diplomatic relations with China in years ahead."The relationship between Malaysia and China is a very warm and strong relationship that was established way back in 1974, we were the first Southeast Asian to have established diplomatic relations with China," Najib said."Ever since that historic occasion, the relationship between the tow countries has developed from strength to strength and leaps and bounds and today it's the most important relationship that we have," Najib said. "I hope this relationship will bring much benefit to both Malaysia and China, I wish it can be developed further and strengthen and deepen this important relationship."The prime minister had his Thursday occupied, attending numerous Spring Festival Open House, including the one held by the Malaysian Chinese Association (MCA) - the largest party that represents the ethnic Chinese in the country's ruling coalition.Thousands attended the open house event at the party's headquarters, many of whom were tourists.Malaysian leaders, ambassadors and attaches from foreign embassies were among the invited guests at the event.The Open House is a Malaysian tradition during celebrations where people open their doors to welcome guests and even strangers into their homes.He then held a live teleconference with Malaysians residing in seven cities in the world, including Guangzhou, China, and sent his greetings.About 26 percent of Malaysia's 27 million population are ethnic Chinese.

BEIJING, Jan. 19 (Xinhua) -- China's central government on Wednesday called on local authorities to step up efforts to ensure a stable market supply of daily necessities, such as food and clothing, as freezing weather continues to plague south and southwest China.The Ministry of Commerce required local government departments to guide companies to increase supplies such as rice, edible oil, meat and vegetables.It also required local departments to closely watch market changes and release reserves of commodities when necessary, said a statement on its website.The statement said the government of southwest China's Chongqing Municipality has urged local supermarkets to maintain the prices of 10 types of vegetables that are affordable to the public, while authorities in the rain and snow-battered Guizhou and Hunan provinces guided logistics companies and wholesales markets to take measures to insure supplies.The Ministry of Agriculture on Wednesday also ordered local departments to expand areas for growing vegetables when conditions allow, as agricultural experts were also sent to fields to help farmers save their crops.The country's meteorological authority forecast Wednesday that over the next three days, heavy snow and icy rain would continue in provinces and municipalities including Guizhou, Hubei, Hunan, Jiangxi, and Chongqing.