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发表于 2007-8-22 14:38:38
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来自: 中国重庆
<div align="center"><table cellspacing="0" cellpadding="0" width="97%" border="0" style="WIDTH: 97%; mso-cellspacing: 0cm; mso-padding-alt: 0cm 0cm 0cm 0cm;"><tbody><tr style="HEIGHT: 22.5pt;"><td valign="bottom" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: #d4d0c8; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; HEIGHT: 22.5pt; BACKGROUND-COLOR: transparent;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><span class="biaoti151"><span style="FONT-SIZE: 15pt; FONT-FAMILY: 宋体; LETTER-SPACING: 0pt; mso-ascii-font-family: ""; mso-hansi-font-family: "";"><strong>全球首个肺癌放射免疫治疗新药唯美生成功上市</strong></span></span><font face="Times New Roman"><span style="COLOR: black; FONT-FAMILY: "";">
</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: "";"><p></p></span></font></p></td></tr><tr style="HEIGHT: 22.5pt;"><td valign="bottom" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: #d4d0c8; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; HEIGHT: 22.5pt; BACKGROUND-COLOR: transparent;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">发表:</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">(2007-05-31 07:58); </font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">最后修改</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">:2007-05-31 07:58; </font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">栏目:</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">[</font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">新药资讯</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">] <br/></font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">作者:</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">; </font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">【阅读:</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">397</font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">】</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman"> <shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" opreferrelative="t" ospt="75" coordsize="21600,21600"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path oconnecttype="rect" gradientshapeok="t" oextrusionok="f"></path><lock aspectratio="t" vext="edit"></lock></shapetype></font><shape id="_x0000_i1026" alt="" type="#_x0000_t75" style="WIDTH: 9pt; HEIGHT: 6.75pt;"></shape></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">【</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><a href="http://www.daifumd.com/_daifumd/blog/html/816/javascript:"><b><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; LETTER-SPACING: 0pt; mso-ascii-font-family: ""; mso-hansi-font-family: "";">留言</span></b></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">】</span><span style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">
</font></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">【</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><a href="http://www.daifumd.com/_daifumd/blog/html/816/javascript:"><b><span style="FONT-SIZE: 12pt; COLOR: purple; FONT-FAMILY: 宋体; LETTER-SPACING: 0pt; mso-ascii-font-family: ""; mso-hansi-font-family: "";">繁體</span></b></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ""; mso-hansi-font-family: "";">】</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman">
<p></p></font></span></p><div class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><font face="Times New Roman"><hr align="center" width="100%" size="1"/></font></span></div><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: "";"><p><font face="Times New Roman"></font></p></span></p></td></tr><tr><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: #d4d0c8; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; BACKGROUND-COLOR: transparent;"><p><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"> </span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">全球首个肺癌放射免疫治疗新药唯美生成功上市 </span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><p></p></span></p><p><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";"> 肺癌是全球第一的癌症杀手,每年全球新增病例</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">120</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">万人,每</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">30</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">秒就有一人死于肺癌。在中国,肺癌同样是发病率与死亡率最高的癌症,也是癌症防治工作中的重中之重。长期以来,外科手术、放射治疗虽然在控制肿瘤的局部病灶方面有很好的疗效,但是预防肿瘤的复发、转移却显得无能为力。由于肺癌发病隐匿,一旦发现常常已经失去手术机会,化疗因此就成了一个重要的手段,但是化疗对人体健康的危害较大,处于肺癌晚期的患者常常因无法耐受化疗的痛苦而放弃治疗。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><p></p></span></p><p><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";"> 随着单克隆抗体技术的崛起,放射标记的单克隆抗体已经应用于临床,开辟了一种治疗癌症的新方法——放射免疫治疗(</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">radioimmunotherapy,RIT</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">)。放射性同位素标记的抗肿瘤抗体,注射入体内,抗体与相应的肿瘤抗原结合,从而将放射性同位素锁定在肿瘤部位,放射性同位素持续的内放射,最终造成肿瘤细胞坏死。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><p></p></span></p><p><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";"> 目前,全球仅有两个放射免疫治疗药物,</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">90Y-ibritumomab(Zevalin)</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">和</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">131I-tositumomab(Bexxar)</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">经美国</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">FDA</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">批准用于淋巴瘤的治疗。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">Zevalin</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">和</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">Bexxar</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">在欧美已经开始广泛应用,为淋巴瘤的治疗提供了一种有力武器,年销售额近</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">10</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">亿美金。我们有理由相信,在不久的将来,</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">RIT</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">会成为继肿瘤放、化疗后,肿瘤分子靶向治疗和内放射治疗完美结合的全新治疗方法。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><p></p></span></p><p><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";"> 虽然</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">RIT</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">在淋巴瘤的治疗中取得了如此显著的疗效,但是它对于实体瘤的疗效却一直差强人意。主要原因是实体瘤对放射线本来就不大敏感。同时,在传统的</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";">RIT</span><span style="COLOR: black; mso-ascii-font-family: ""; mso-hansi-font-family: "";">中一般都采用膜抗原单抗。这就引来了一系列问题。首先,特定的膜抗原并不是在所有的肿瘤细胞上表达。也就是说,同样是肺癌,会有很多的病理类型,不同的病理类型肿瘤的抗原标志物会有差异。即使是相同病理类型,由于肿瘤细胞的异质性,抗原的表达也会不同。而且结合的抗体也经常会因为膜抗原的降解及内吞,从结合部位脱落。以上原因都会造成肿瘤部位放射剂量的相对不足或是抗体对肿瘤缺乏特异的靶向作用,从而造成治疗的失败。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: "";"><p></p></span></p><p><span style="COLOR: black; mso-ascii-font-family: ''; mso-hansi-font-family: '';"> </span></p></td></tr></tbody></table></div> |
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