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            當前位置:首頁 > 技術(shù)文章 > 澳大利亞Biosensis公司Fluoro-Jade B (FJB) 粉末用于識別退化神經(jīng)元介紹

            澳大利亞Biosensis公司Fluoro-Jade B (FJB) 粉末用于識別退化神經(jīng)元介紹

            更新時間:2025-10-15      點擊次數(shù):851

             一、基礎(chǔ)信息  

            貨號:TR-150-FJB  

            英文名:Fluoro-Jade B (FJB) Powder for Identifying Degenerating Neurons  

            中文名:Fluoro-Jade B (FJB) 粉末用于識別退化神經(jīng)元

            規(guī)格:30 mg(干粉形式)  

            品牌:Biosensis

            分子式:C26H16O7  

            分子量:448.4  

            激發(fā)波長:495 nm  

            發(fā)射波長:521 nm  

            純度檢測:HPLC ≥95%  

            熒光量子產(chǎn)率:0.85(相對熒光素)  

            溶解性:易溶于水(pH 3.0-5.0)  

            替代性說明:該產(chǎn)品為Merck-Millipore已停產(chǎn)產(chǎn)品AG310的替代品,性能與原產(chǎn)品高度一致。  

            5fadb438a2a81d94f42314d4cf5317ac_fjb_image_2014_gao_f_1.png

             二、產(chǎn)品原理  

            Fluoro-Jade B(FJB)是一種基于陰離子熒光素衍生物的神經(jīng)組織學(xué)染色試劑,其核心原理是通過特異性結(jié)合退化神經(jīng)元的脂質(zhì)膜成分(如磷脂酰乙醇胺)實現(xiàn)熒光標記。具體機制包括:  

            1. 靶向退化神經(jīng)元:  

               - 在神經(jīng)元變性過程中,細胞膜結(jié)構(gòu)破壞導(dǎo)致脂質(zhì)代謝產(chǎn)物(如磷脂酰乙醇胺)暴露,F(xiàn)JB通過靜電作用與這些成分結(jié)合。  

               - 與正常神經(jīng)元相比,退化神經(jīng)元的膜電位改變進一步增強了FJB的滲透性和結(jié)合效率。  

            2. 熒光信號觸發(fā):  

               - FJB的最大激發(fā)波長為495 nm(藍光),發(fā)射波長為521 nm(綠色),可通過熒光顯微鏡或共聚焦顯微鏡觀察。  

               - 染色后神經(jīng)元呈現(xiàn)明亮的綠色熒光,背景干擾極低,適用于高分辨率成像。  

            3. 抗干擾性:  

               - FJB無需金屬沉積步驟(如傳統(tǒng)鍍銀染色),避免了金屬離子背景干擾。  

               - 對組織固定方式(甲醛、戊二醛等)和切片類型(冷凍、石蠟包埋)兼容性更強。  


             三、解決的核心實驗問題  

            1. 傳統(tǒng)技術(shù)的局限性:  

               - 鍍銀染色法:需多步金屬還原反應(yīng),耗時長達24小時以上,且成本高昂,難以實現(xiàn)多重標記。  

               - 免疫組化標記:依賴特異性抗體,僅能識別特定病理標志物(如Tau蛋白),無法全面反映神經(jīng)元退化的整體情況。  

            2. 神經(jīng)退行性疾病研究的痛點:  

               - 早期病變檢測:FJB可標記尚未出現(xiàn)明顯形態(tài)學(xué)改變的早期退化神經(jīng)元,為阿爾茨海默病、帕金森病等疾病的機制研究提供敏感工具。  

               - 多模型適用性:支持體外培養(yǎng)神經(jīng)元(如原代皮層神經(jīng)元)和體內(nèi)模型(如大鼠海馬區(qū)損傷模型)的退化評估。  

            3. 膠質(zhì)細胞標記需求:  

               - FJB不僅能標記神經(jīng)元,還可特異性結(jié)合反應(yīng)性星形膠質(zhì)細胞,為神經(jīng)炎癥研究提供新視角。  


             四、產(chǎn)品優(yōu)勢  

            1. 高靈敏度與特異性:  

               - 檢測靈敏度可達單細胞水平,信噪比優(yōu)于傳統(tǒng)染色方法。  

               - 雖純度略低于FJC(Biosensis另一產(chǎn)品),但成本僅為FJC的1/3,適合大規(guī)模實驗。  

            2. 實驗兼容性廣泛:  

               - 樣本類型:支持冷凍切片、石蠟切片、培養(yǎng)細胞及灌注固定的組織樣本。  

               - 聯(lián)合染色:可與DAPI(細胞核標記)、GFAP(星形膠質(zhì)細胞標記)或免疫熒光抗體(如Iba-1標記小膠質(zhì)細胞)聯(lián)用,實現(xiàn)多維度病理分析。  

            3. 操作便捷性:  

               - 染色流程僅需3步:組織透化→FJB染色→封片,全程耗時約1小時。  

               - 工作液穩(wěn)定性高,現(xiàn)配現(xiàn)用,避免儲存降解風(fēng)險。  

            4. 經(jīng)濟性與可持續(xù)性:  

               - 單批次30 mg粉末可滿足數(shù)百次染色需求(每次使用約1 μg),顯著降低長期實驗成本。  

               - 干粉形式減少運輸和儲存中的污染風(fēng)險,符合實驗室綠色化趨勢。  


             五、客戶群體  

            1. 神經(jīng)科學(xué)研究機構(gòu):  

               - 專注于阿爾茨海默病、帕金森病、肌側(cè)索硬化癥(ALS)等神經(jīng)退行性疾病的實驗室。  

               - 從事神經(jīng)發(fā)育、神經(jīng)代謝及神經(jīng)免疫學(xué)研究的團隊。  

            2. 藥企與CRO公司:  

               - 需評估藥物對神經(jīng)元保護作用的藥理部門(如抗癲癇藥物、神經(jīng)保護劑開發(fā))。  

               - 提供神經(jīng)毒性評價服務(wù)的合同研究組織(CRO)。  

            3. 教學(xué)與臨床轉(zhuǎn)化平臺:  

               - 醫(yī)學(xué)院校的神經(jīng)生物學(xué)教學(xué)實驗室,用于本科生/研究生實驗教學(xué)。  

               - 醫(yī)院病理科開展神經(jīng)退行性疾病診斷輔助研究。  


             六、訂貨信息  

            1. 購買渠道:  

               - 中國區(qū)代理:上海起發(fā)

            2. 儲存與使用注意事項:  

               - 干粉儲存:避光保存于-20℃,避免吸潮;已溶解的0.01%原液建議4℃短期儲存(不超過3個月)。  

               - 質(zhì)量控制:每批次提供質(zhì)檢報告(包括純度檢測、熒光穩(wěn)定性測試)。  

             八、常見問題解答(FAQ)  

            1. Q:FJB能否用于活細胞染色?  

            A:FJB需通過固定透化處理進入細胞,活細胞染色需特殊協(xié)議,建議優(yōu)先使用終濃度≤1 μM的預(yù)處理方案。  

            2. Q:與Nissl染色相比有何優(yōu)勢?  

            A:Nissl染色反映細胞活性,而FJB特異性標記退化神經(jīng)元,二者聯(lián)用可區(qū)分壞死與凋亡。  

            3. Q:如何避免染色背景過高?  

            A:優(yōu)化透化時間(推薦10-15分鐘),避免過度消化;使用0.1% Triton X-100作為透化劑。  


            九、總結(jié)  

            Fluoro-Jade B(TR-150-FJB)作為神經(jīng)退行性研究的核心工具,憑借其高靈敏度、實驗靈活性和經(jīng)濟性,已成為全球3000余家實驗室的優(yōu)秀試劑。Biosensis公司通過持續(xù)優(yōu)化生產(chǎn)工藝,確保產(chǎn)品性能穩(wěn)定,而艾美捷科技憑借本土化服務(wù)網(wǎng)絡(luò),為中國科研用戶提供從產(chǎn)品供應(yīng)到技術(shù)支持的完整解決方案。無論是基礎(chǔ)研究還是藥物開發(fā),F(xiàn)JB都為揭示神經(jīng)元退化的分子機制提供了不可替代的技術(shù)支撐。


            關(guān)鍵詞:Biosensis、Biosensis神經(jīng)科學(xué)抗體、Biosensis ELISA試劑盒、Biosensis組織染色試劑盒、Biosensis神經(jīng)營養(yǎng)因子抗體、Biosensis退化神經(jīng)元染色、Biosensis淀粉樣斑塊染色、Biosensis帕金森病研究抗體、Biosensis阿爾茨海默病研究試劑、Biosensis PDGF-AB ELISA試劑盒、Biosensis寡聚淀粉樣βELISA試劑盒、Biosensis神經(jīng)絲輕鏈抗體、Biosensis膠質(zhì)細胞源性神經(jīng)營養(yǎng)因子抗體、Biosensis腦源性神經(jīng)營養(yǎng)因子ELISA、Biosensis神經(jīng)生長因子受體ELISA、Biosensis離子鈣結(jié)合接頭分子1抗體、Biosensis雙皮質(zhì)素抗體、Biosensis帕金森病蛋白7抗體、Biosensis成熟NGF ELISA、Biosensis原NGF ELISA、Biosensis神經(jīng)退行性疾病抗體、Biosensis自噬研究抗體、Biosensis代謝應(yīng)激障礙試劑、Biosensis神經(jīng)免疫學(xué)試劑、Biosensis炎癥研究抗體、Biosensis中國代理、Biosensis神經(jīng)科學(xué)產(chǎn)品線、Biosensis抗體應(yīng)用WB/ICC/IHC


            更多產(chǎn)品信息,請聯(lián)系中國區(qū)域代理商:上海起發(fā)實驗試劑有限公司

            如果您對任意產(chǎn)品或其他品牌感興趣,可通過“在線留言"功能留下您的需求

            (注:本文內(nèi)容基于品牌公開資料及行業(yè)常規(guī)信息整理,具體以品牌信息文檔為準。)


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            Intermediate conductance calcium-activated potassium channel protein 4 (KCNN4), Goat Polyclonal Antibody

            100ug

            Biosensis

            BEK-2228-SET

            Mature NGF/proNGF Combo (BEK-2214/2236), Rat, Rapid™ ELISA assay-2 x 1 Plate Set

            2x1PlateSet

            Biosensis


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