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上海乾思生物科技有限公司
中級會員 | 第17年

18916423352

細胞庫
優(yōu)勢品牌
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自產(chǎn)ELISA試劑盒,試劑盒
進口ELISA試劑盒
人細胞,人細胞系,人細胞株
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大鼠細胞,大鼠細胞系
細胞株,細胞系,傳代細胞
抗體庫,小包裝,流式抗體
SIGMA現(xiàn)貨,SIGMA代理

細胞因子的種類

時間:2011/10/13閱讀:786
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乾思 生物編輯整理:

  1.白細胞介素 
 
  白細胞介素(IL)簡稱白介素,,由白細胞(和其他細胞)產(chǎn)生,,并在細胞間發(fā)揮廣泛炎癥,、刺激活化作用的細胞因子。已報道的白細胞介素有30余種,。Th1細胞因子主要是IL-2,、IL-12、IFNγ,;Th2細胞因子主要是IL-4,、IL-5,、IL-6、IL-10,,分別促進Th1,、Th2分化和功能,分別促醫(yī)學(xué)''教育網(wǎng)搜集整理進細胞免疫和體液免疫應(yīng)答,。IL-10和TGFβ是調(diào)節(jié)性T細胞的效應(yīng)因子,。 
 
  表4-9 白細胞介素(IL)及其主要生物學(xué)作用 
 
  ILs 主要產(chǎn)生細胞 主要生物學(xué)作用 
IL-1 單核-吞噬細胞
血管內(nèi)皮細胞 ① 促進T、B淋巴細胞活化,、增生,;
②增強NK細胞和單核巨噬細胞活性;
③刺激下丘腦體溫調(diào)節(jié)中樞,,引起發(fā)熱,;
④介導(dǎo)炎癥反應(yīng) 
IL-2 活化T細胞(Th1)
NK細胞 ① 促進T、B細胞增殖分化,;
②增強Tc細胞,、NK細胞和NK巨噬細胞殺傷活性;
③誘導(dǎo)LAK形成,,產(chǎn)生抗瘤作用,;
④作用具有沿種系譜向上的約束性 
IL-4 活化T細胞(Th2)
肥大細胞 ① 促進T、B細胞增殖分化,;
②誘導(dǎo)Ig類別轉(zhuǎn)換,,促進肥IgE或IgG類抗體生成;
③抑制Th1分泌IFN-γ,、TNF-β,、IL-2、等細胞因子,,下調(diào)細胞免疫應(yīng)答,;
④誘導(dǎo)活化CD4+T細胞分化為Th2細胞 
IL-5 活化T細胞(Th2)
肥大細胞 ① 促進B細胞增殖分化,誘導(dǎo)Ig類別轉(zhuǎn)換,,產(chǎn)生IgA類抗體,;
②促進嗜酸性粒細胞增殖分化 
IL-6 單核-吞噬細胞活化
T細胞 ① 促進B細胞增殖分化,合成分泌Ig,,
②促進T細胞增殖分泌,,
③參與炎癥反應(yīng),引起發(fā)熱 
IL-8 單核-吞噬細胞血內(nèi)皮細胞
活化T細胞(Th2) ① 吸引中性粒細胞,,嗜堿性粒細胞和T細胞作定向趨勢運管動,;
②激活中性粒細胞、嗜堿性粒細胞,使之脫顆粒釋放生物活性介質(zhì),,增強炎癥和過敏反應(yīng) 
IL-10 單核-吞噬細胞 ① 抑制巨噬細胞功能,,降低抗原遞呈作用,減少單核因子生成,;
②抑制Th1細胞分泌IL-2,、IFN-γ、TNF-β等細胞因子,,下調(diào)細胞免疫應(yīng)答,;
③促進B細胞增殖和抗體生成,上調(diào)體液免疫應(yīng)答 
IL-12 單核-吞噬細胞 ① 促進Tc,、NK細胞增殖分化,,增強其殺傷活性;
②誘導(dǎo)活化CD4+T細胞分化為CD4+Th1細胞,,
③作用有種屬特異性 
  2.干擾素 
 
  干擾素(IFN)是zui早發(fā)現(xiàn)的細胞因子,因其具有干擾病毒感染和復(fù)制的能力故稱干擾素,??煞譃镮型和Ⅱ型干擾素:I型干擾素包括IFN-α、IFN-β,,由APC和成纖維細胞產(chǎn)生,,有較強抗病毒轉(zhuǎn)錄復(fù)制作用;II型干擾素即IFN-γ,,主要由活化T細胞產(chǎn)生,,通過激活A(yù)PC功能和巨噬細胞、NK,、CTL細胞功能發(fā)揮抗病毒作用,。IFN-α已被成功應(yīng)用于慢性乙肝的治療。 
 
  3.腫瘤壞死因子 
 
  腫瘤壞死因子(TNF):使腫瘤發(fā)生出血,、壞死的細胞因子,。腫瘤壞死因子超家族(TNFSF)目前至少有19個成員,在調(diào)節(jié)適應(yīng)性免疫,、殺傷靶細胞和誘導(dǎo)細胞凋亡等過程中發(fā)揮重要作用,。腫瘤壞死因子分為TNF-α和淋巴毒素(LT,或TNF-β),。 
 
  4.集落刺激因子 
 
  集落刺激因子(CSF)是指能夠刺激多能造血干細胞和不同發(fā)育分化階段的造血祖細胞增殖分化,,在半固體培養(yǎng)基中形成相應(yīng)細胞集落的細胞因子。目前發(fā)現(xiàn)的集落醫(yī)學(xué)''教育網(wǎng)搜集整理刺激因子有粒細胞-巨噬細胞集落刺激因子(GM-CSF),、粒細胞集落刺激因子(G-CSF),、紅細胞生成素(EPO)、干細胞生長因子(SCF),、血小板生成素(TPO)和白細胞介素-11等,。 
 
  5.生長因子 
 
  生長因子(GF)是具有刺激細胞生長作用的細胞因子,,包括轉(zhuǎn)化生長因子-β( TGF-β)、表皮細胞生長因子(EGF),、血管內(nèi)皮細胞生長因子(VEGF),、成纖維細胞生長因子(FGF)、神經(jīng)生長因子(NGF),、血小板衍生的生長因子(PDGF)等,。 
 
  6.趨化因子 
 
  趨化性細胞因子:是一個蛋白質(zhì)家族,分子量多為8-10kDa的多肽組成,。趨化性細胞因子的主要功能是招募血液中的單核細胞,、中性粒細胞、淋巴細胞等進入感染發(fā)生的部位,。分為4種亞家族:1.CC亞家族,;2.CXC亞家族3.C亞家族4.CX3C亞家族。

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