Moffitt癌症中心的研究人员发现某些蛋白表达缺失与乳腺的不良预后有关，肺癌

坦帕，佛罗里达州 –Moffitt癌症中心的研究人员发现，乳腺癌患者有低水平的蛋白质称为肺癌患者Tristetraprolin（TTP）有更积极的肿瘤和较高水平的蛋白预后较差。 他们研究发表于12月26日发行的PLoS ONE。

Cancer arises through the increased activity of oncogenes, proteins that drive cancer growth, and the decreased activity of tumor suppressors, proteins that block malignant growth and progression。TTP is a recently discovered tumor suppressor protein, and scientists at Moffitt have found that this protein can prevent lymphoma growth in mice.

Researchers wanted to further investigate the importance of TTP in cancer patients and what other genes it is associated with in cancer。Using a detailed catalog of genetic changes in cancer developed by the National Institutes of Health, called The Cancer Genome Atlas, Moffitt scientists compared patients who had low levels of TTP to those with high levels of the protein。

These researchers found a network of 50 different genes associated with low levels of TTP in breast, lung and colon tumors。This genetic network was also present in other tumor types, including prostate, pancreatic and bladder cancer。 This demonstrates that TTP is involved in a variety of mechanisms important for tumor development and growth, and suggests that developing agents that target this network may be an effective therapeutic strategy across a wide spectrum of tumors。

They also reported that low levels of TTP were associated with poor prognosis in certain cancers, including a higher rate of relapse in breast cancer patients and lower rates of survival in lung adenocarcinoma patients.  Additionally, breast and lung cancer patients with low levels of TTP tended to have more aggressive types of tumors。

“Identifying this network allows us to set up future research projects focused on understanding how TTP functions as a tumor suppressor with the ultimate goal of developing treatments specific for patients that have low levels of TTP,” explained Robert Rounbehler, Ph.D., research scientist at Moffitt。

The 研究 was supported by grants from the National Institutes of Health (R01-CA167093), ThinkPink Kids Foundation and the State of Florida.  It was also partly supported by an NCI Comprehensive Cancer Center Support Grant (P30-CA076292)。

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