乳腺癌治療的早期發(fā)現(xiàn)和進(jìn)步能提高患者生存的機(jī)會(huì),,但是對抗這種疾病的新的治療途徑還需要我們進(jìn)一步努力。發(fā)表在BioMed Central的Breast Cancer Research的雜志上的一項(xiàng)新的研究表明,,蛋白PERP與細(xì)胞橋粒能抑制乳腺癌,,這為今后乳腺癌的治療提供了潛在的新的靶標(biāo),。橋粒是相鄰細(xì)胞間的一種斑點(diǎn)狀黏著連接結(jié)構(gòu),。
橋粒連接相鄰細(xì)胞,這一微小蛋白質(zhì)的集合調(diào)控身體內(nèi)器官和組織的機(jī)械強(qiáng)度,。橋粒也被認(rèn)為有助于抑制癌癥,。加州大學(xué)伯克利分校、斯坦福大學(xué)和加州大學(xué)戴維斯分校的研究人員發(fā)現(xiàn)蛋白PERP與橋粒一起存在于乳腺上皮細(xì)胞中,。
該研究領(lǐng)導(dǎo)者Laura Attardi醫(yī)生表示:該研究只要闡述了PERP的缺失是如何影響小鼠正常乳腺組織功能的,。她說:PERP不足會(huì)造成乳腺上皮細(xì)胞橋粒蛋白表達(dá)的缺失,同時(shí)增強(qiáng)乳腺組織的炎癥反應(yīng),,腫瘤往往能更快熟發(fā)展,。我們實(shí)驗(yàn)室研究也發(fā)現(xiàn)乳腺癌細(xì)胞有異常低水平的PERP表達(dá)。
這些結(jié)果表明PERP是一種細(xì)胞膠,,能將細(xì)胞系在一起,,但同時(shí)PERP在預(yù)防乳腺癌方面具有雙重作用。炎性細(xì)胞促進(jìn)癌癥,,缺乏細(xì)胞粘附是癌癥轉(zhuǎn)移的一大重要過程,。PERP可能是監(jiān)測乳腺癌的一個(gè)新的指標(biāo)或治療的新靶標(biāo)。(生物谷:Bioon.com)
doi:10.1186/bcr3171
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Deficiency of the p53/p63 target Perp alters mammary gland homeostasis and promotes cancer
Rachel L Dusek, Jamie L Bascom, Hannes Vogel, Sylvain Baron, Alexander D Borowsky, Mina J Bissell, Laura D Attardi.
Perp is a transcriptional target of both p53 during DNA damage-induced apoptosis and p63 during stratified epithelial development. Perp-/- mice exhibit postnatal lethality associated with severe blistering of the epidermis and oral mucosa, reflecting a critical role in desmosome-mediated intercellular adhesion in keratinocytes. However, Perp's role in tissue homeostasis in other p63-dependent stratified epithelial tissues is poorly understood. Given that p63 is essential for proper mammary gland development and that cell adhesion is fundamental for ensuring the proper architecture and function of the mammary epithelium, here we investigate Perp's function in the mammary gland.