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        微管蛋白抑制劑在前列腺癌中的應(yīng)用進(jìn)展

        2025-08-08 00:00:00郭楠竇寶凱張晶
        中國藥房 2025年13期
        關(guān)鍵詞:抑制劑耐藥蛋白

        中圖分類號R979.1;R737.25 文獻(xiàn)標(biāo)志碼A 文章編號 1001-0408(2025)13-1683-06

        DOI 10.6039/j.issn.1001-0408.2025.13.22

        Progress in the application of microtubulin inhibitors in prostate cancer

        GUO Nan,DOU Baokai,ZHANG Jing(Dept.of Pharmacy,Provincial Hospital Afiliated to Shandong Firs MedicalUniversity,Jinan ,China)

        ABSTRCTWhenprostatecancer(PCa)progreses tothemetastaticcastration-resistantstage,significantchalengesarisein clinicaltreatment.Microtubulinibitorshavebcomefis-liedugsforthetreamentofmetastaticastratio-resistantPCaduto their uniqe mechanismofaction.Among them,taxanes (.g.docetaxeland cabazitaxel)remainstandardcare with proven survival benefits,whileothermicrotubuleinhbitors(e.g.vincristine,colchicine)showlimitedclinicalutiltyduetotoxicity.Curently,the clinicalappoachprimarilyemploysdocetaxel-basedtripletherapyandcombinedwithimmunecheckpointinhbitorstoimprovethe prognosisofPCapatients,reversetheimmunosuppresive stateof the tumor microenvironment,and enhance therapeutic eicacy. DespitetheremarkableclinicaleffcacyofmicrotubuleinhibitorsinthetreatmentofPCa,theemergenceofdrugresistancehas limitedtheirlong-termaplication.Toaddressthisisue,researchershaveexplorednewsolutions,includingthedevelopmentof novelmicrotubuleiibitorsincombinationwithATP-bindingcasetesufamilyBmemberlihibitors,theconcuentuseoffatty acidsynthaseinhibitorswithmicrotubuleinhibitors,andthedevelopmentofdegradersbasedonproteolysis-targetingchimeras technology.Futureresearchshouldfocusontargetdiscovery,drugformulationoptimization,andpersonalizedapproachesto overcome current therapeutic limitations.

        KEYWORDSprostatecancer;metastaticcastration-resistantprostatecancer;microtubuleinhibitors;docetaxel;combination therapy;drug resistance

        前列腺癌(prostatecancer,PCa)是男性常見的惡性腫瘤,其發(fā)病率在美國癌癥中居首位[1,在我國的發(fā)病率也逐漸上升2。PCa具有轉(zhuǎn)移性,常發(fā)展為轉(zhuǎn)移性激素敏感性前列腺癌(metastatichormone-sensitiveprostatecancer,mHSPC)。雄激素剝奪治療(androgendepriva-tiontherapy,ADT)是其核心療法,可通過降低雄激素水平抑制腫瘤生長,但多數(shù)患者會(huì)進(jìn)展為轉(zhuǎn)移性去勢抵抗性前列腺癌(metastatic castration-resistant prostate cancer,mCRPC),導(dǎo)致治療困難[3。近年來,微管蛋白抑制劑因其獨(dú)特作用機(jī)制成為mCRPC的一線治療藥物[4]。

        微管蛋白是細(xì)胞骨架核心,主要含 α,β 兩種類型,可通過動(dòng)態(tài)組裝形成微管結(jié)構(gòu),對細(xì)胞分裂至關(guān)重要;一旦微管蛋白平衡被干擾,即可抑制腫瘤細(xì)胞有絲分裂,誘導(dǎo)腫瘤細(xì)胞凋亡。此外,微管蛋白還參與了雄激素受體(androgenreceptor,AR)的核轉(zhuǎn)運(yùn)過程,AR與雄激素結(jié)合后,可通過微管網(wǎng)絡(luò)進(jìn)入細(xì)胞核,推動(dòng)細(xì)胞增殖、遷移及上皮間質(zhì)轉(zhuǎn)化,對PCa進(jìn)展至關(guān)重要。微管蛋白抑制劑可分為兩類,一類是可促進(jìn)微管蛋白聚合、穩(wěn)定微管、阻滯細(xì)胞周期并誘導(dǎo)細(xì)胞凋亡的紫杉烷類藥物;另一類是可抑制微管聚合、破壞微管蛋白平衡的長春新堿類和秋水仙堿類藥物。兩類皆不受基因突變和腫瘤免疫環(huán)境影響,適用范圍廣泛,且聯(lián)合治療潛力巨大,能與激素類藥物、免疫檢查點(diǎn)抑制劑等協(xié)同增效?;诖耍疚臄M對微管蛋白抑制劑在PCa中的應(yīng)用進(jìn)展歸納綜述,包括臨床療效、聯(lián)合應(yīng)用新策略、耐藥機(jī)制及應(yīng)對策略等,以期為PCa臨床治療方案的優(yōu)化提供新思路。

        1微管蛋白抑制劑的臨床療效

        1.1紫杉烷類微管蛋白抑制劑

        1.1.1 紫杉醇

        作為紫杉烷類藥物中首個(gè)被應(yīng)用于癌癥化療的藥物,紫杉醇在抗腫瘤研究中展現(xiàn)出重要意義。紫杉醇可通過增加活性氧積累,促進(jìn)缺氧誘導(dǎo)因子 1αα 表達(dá),激活c-JunN末端激酶/胱天蛋白酶3信號通路,從而促進(jìn)PCaPC3M細(xì)胞凋亡。紫杉醇雖具有抗腫瘤活性,但不良反應(yīng)(如周圍神經(jīng)病變、中性粒細(xì)胞減少和黏膜炎等)明顯,臨床應(yīng)用時(shí)需監(jiān)測其不良反應(yīng)并調(diào)整劑量,因此在用于PCa中受到限制。雖然相關(guān)研究發(fā)現(xiàn)紫杉醇與卡鉑聯(lián)合應(yīng)用耐受性較好[,但隨著多西他賽等更優(yōu)藥物的出現(xiàn),紫杉醇被逐漸替代。

        1.1.2 多西他賽

        多西他賽是一種半合成紫杉醇衍生物,相比于紫杉醇,其對微管蛋白的親和力更強(qiáng),血漿半衰期更長,穩(wěn)定微管的效率更高。在mCRPC治療中,多西他賽單藥治療的中位總生存(overallsurvival,OS)期為13.89個(gè)月,中位無進(jìn)展生存(progression-freesurvival,PFS)期為5.29個(gè)月,可顯著延長患者生存時(shí)間并延緩疾病進(jìn)展[]。即使在多種治療方案失敗后,多西他賽仍對mCRPC患者有效[12]。一項(xiàng)回顧性研究分析了150例經(jīng)AR靶向藥物治療失敗后的mCRPC患者,發(fā)現(xiàn)多西他賽聯(lián)合卡鉑治療的客觀緩解率是多西他賽單藥治療的2.6倍;聯(lián)合組患者30個(gè)月的OS率為 70.7% ,顯著高于多西他賽單藥組的 38.9% 和卡巴他賽單藥組的 30.3%[13] 。因此,多西他賽可作為AR靶向藥物治療失敗后的有效治療選擇。

        延長患者從mHSPC進(jìn)展到mCRPC的時(shí)間是改善晚期PCa患者預(yù)后的關(guān)鍵。在mHSPC治療中,3項(xiàng)隨機(jī)對照試驗(yàn)(CHAARTED、GETUG-15和STAMPEDE研究)證實(shí),多西他賽聯(lián)合ADT可顯著延長患者的OS期[風(fēng)險(xiǎn)比(hazardratio,HR) 置信區(qū)間(confi-dence interval,CI)(0.70,0.88), Plt;0.000 1]、PFS期Δ[HR=0.70,95%CI(0.63,0.77) ! Plt;0.000 1] 和無失敗生存(failure-freesurvival,F(xiàn)FS)期[H R=0.64,95%CI(0.58 0.71), Plt;0.000 1],5年絕對改善率為 9%~11%[14] 。然而,多西他賽的療效受轉(zhuǎn)移瘤體積和臨床分期影響,高瘤負(fù)荷、臨床T4期患者獲益最大,治療第5年時(shí)患者的生存獲益最為顯著[PFS率為 27%,95%CI(17%,37%) :OS率為 35%,95%CI(24%,47%)] ,而低瘤負(fù)荷合并后續(xù)轉(zhuǎn)移患者獲益不明顯[PFS率為 -1% 95%CI(-15% ,12% );OS率為 0% 95%CI(-10%,12%)]14] 。因此,雖然多西他賽可顯著延長高瘤負(fù)荷mHSPC患者的OS期,但低瘤負(fù)荷合并后續(xù)轉(zhuǎn)移患者可能還需要其他的治療方法。

        1.1.3 卡巴他賽

        卡巴他賽是第2代紫杉烷類抗腫瘤藥物,具有強(qiáng)大的細(xì)胞毒性和誘導(dǎo)細(xì)胞凋亡能力[5,被美國國立綜合癌癥網(wǎng)絡(luò)(National Comprehensive Cancer Network,NCCN)推薦為mCRPC在多西他賽和新型激素療法干預(yù)后的首選治療方案,尤其適用于多西他賽治療后病情進(jìn)展的患者[1。相比傳統(tǒng)紫杉烷類藥物,卡巴他賽減少了脫發(fā)和外周神經(jīng)病變等不良反應(yīng),但中性粒細(xì)胞減少的發(fā)生率較高。該不良反應(yīng)可通過調(diào)整劑量有效管理,如將 25mg/m2 、每3周1次的給藥方案調(diào)整為 16mg/m2 每2周1次,可顯著降低mCRPC患者3級或以上中性粒細(xì)胞減少的發(fā)生率( 62.5% VS. 5.1% )[],這為在不影響卡巴他賽療效的前提下提供了更安全的治療選擇。另外,卡巴他賽在患者疼痛緩解、生活質(zhì)量改善等方面相較于AR靶向劑更好,其疼痛緩解率為 46% ,顯著高于阿比特龍/恩雜魯胺對照組的 19%(Plt;0.000 1) ;其PCa治療功能評估問卷總評分中惡化時(shí)間的中位數(shù)也優(yōu)于對照組[14.8個(gè)月vs.8.9個(gè)月, HR=0.72,95%CI(0.44,1.20), P=0.21] ;其PFS期也顯著長于對照組[8.0個(gè)月vs.3.7個(gè)月, HR=0.54,95%CI(0.40,0.73) Plt;0.001][18] 。由此可知,卡巴他賽在mCRPC治療中療效顯著,可通過優(yōu)化劑量有效控制不良反應(yīng),是mCRPC二線治療的重要選擇。

        1.2長春新堿類微管蛋白抑制劑

        1.2.1 長春新堿

        長春新堿作為一種經(jīng)典的抗腫瘤藥物,其抗腫瘤效應(yīng)主要通過抑制微管蛋白聚合來實(shí)現(xiàn)。然而,由于其選擇性較低且神經(jīng)毒性較高,故其在PCa治療中的應(yīng)用受到限制。近年來,體外及動(dòng)物模型研究揭示了其聯(lián)合治療策略(例如長春新堿與西地那非的聯(lián)合應(yīng)用)以及創(chuàng)新性藥物遞送系統(tǒng)(例如透明質(zhì)酸包裹的硫醇化殼聚糖納米制劑)的潛力[19-20]。研究顯示,長春新堿與西地那非聯(lián)合可顯著抑制PCa腫瘤生長,使腫瘤體積減小約80%[19] ;上述納米制劑可將長春新堿的釋放時(shí)間延長,并降低全身毒性[2]。此外,溶瘤麻疹病毒與長春新堿聯(lián)合制成的納米制劑可顯著降低PC3細(xì)胞的活力,具有良好的應(yīng)用前景2]。未來需通過更多臨床試驗(yàn)來驗(yàn)證聯(lián)合治療及遞送系統(tǒng)的安全性和有效性,以期克服長春新堿的毒性限制。

        1.2.2 長春瑞濱

        長春瑞濱是長春新堿的衍生物,其神經(jīng)毒性低于長春新堿,骨髓抑制為其劑量限制性毒性。一項(xiàng)Ⅱ期臨床試驗(yàn)中,41例化療耐藥的PCa患者接受長春瑞濱(30mg/d ,每周3次)聯(lián)合地塞米松( 1mg/d) 治療,結(jié)果顯示,長春瑞濱組患者的中位PFS期為4個(gè)月 [95%CI (2.8,6.9)],0S期為17.5個(gè)月 [95%000.1(10.8,24.5)] ,且毒性輕微[22]。一項(xiàng)I期臨床試驗(yàn)結(jié)果顯示,替西羅莫司聯(lián)合長春瑞濱治療晚期實(shí)體瘤的最大耐受劑量為替西羅莫司25mg (每周1次)和長春瑞濱 20mg/m2 (每2周1次);該研究共人組了19例患者,其中2例為PCa患者,結(jié)果發(fā)現(xiàn),1例PCa患者的癥狀部分緩解,1例PCa患者病情穩(wěn)定,表明上述兩藥的耐受性良好[23]。然而,由于樣本量太小,后續(xù)仍需進(jìn)一步擴(kuò)大樣本量來探索長春瑞濱與其他藥物的協(xié)同作用,開發(fā)更有效的治療策略。

        1.3 秋水仙堿

        秋水仙堿是一種經(jīng)典的抗有絲分裂藥物,其可通過抑制微管蛋白聚合,阻止細(xì)胞有絲分裂,誘導(dǎo)細(xì)胞凋亡,從而發(fā)揮抗腫瘤作用;還可通過抑制NOD樣受體蛋白3炎癥小體激活,減少腫瘤微環(huán)境中的炎癥反應(yīng),從而抑制腫瘤生長[24-25]。秋水仙堿可克服多藥耐藥,尤其是紫杉烷類藥物耐藥[2]。研究顯示,秋水仙堿對PC3細(xì)胞的半數(shù)抑制濃度為 22.99ng/mL ,可使細(xì)胞周期停滯在 G2/ M期,降低線粒體膜電位,并提高早期和晚期凋亡細(xì)胞比例2]。盡管如此,秋水仙堿的臨床應(yīng)用仍受限于其骨髓抑制和胃腸道反應(yīng)等全身毒性,故尚未獲批用于PCa治療。未來需通過更多臨床試驗(yàn)來驗(yàn)證其安全性和有效性,以充分發(fā)揮其在PCa治療中的作用。

        2微管蛋白抑制劑聯(lián)合療法在PCa治療中的新策略

        2.1基于多西他賽的三聯(lián)療法

        三聯(lián)療法中,多西他賽與ADT及AR通路抑制劑聯(lián)合應(yīng)用可顯著提高抗腫瘤療效。ARASENS研究結(jié)果顯示,ADT聯(lián)合達(dá)羅他胺和多西他賽治療,可顯著延長mHSPC患者的OS期 [HR=0.68,95%CI(0.57,0.80)] ,這一生存獲益在各個(gè)亞組(包括初治患者、復(fù)發(fā)患者、高/低腫瘤負(fù)荷患者以及高/低?;颊撸┲芯3忠恢耓28]。日本Ⅲ期ARASENS亞組分析結(jié)果進(jìn)一步證實(shí),三聯(lián)療法可顯著延緩mHSPC患者進(jìn)展至mCRPC,且安全性和耐受性良好[29]。因此,三聯(lián)療法已被多項(xiàng)國際指南推薦為mHSPC的標(biāo)準(zhǔn)治療方案。

        2.2 聯(lián)用免疫檢查點(diǎn)抑制劑

        近年來,免疫療法在腫瘤治療中發(fā)展?jié)摿^大,但其在PCa中效果有限,這可能與PCa免疫浸潤少、T細(xì)胞活性低及程序性死亡受體1(programmeddeath-1,PD-1)/程序性死亡受體配體1(programmeddeath-ligand1,PD-L1)高表達(dá)有關(guān)[30]。多西他賽和卡巴他賽能調(diào)節(jié)免疫微環(huán)境,逆轉(zhuǎn)PCa免疫抑制,例如多西他賽可激活環(huán)鳥苷酸-腺苷酸合成酶/干擾素基因刺激因子信號通路,促進(jìn)干擾素傳導(dǎo),增強(qiáng)淋巴細(xì)胞浸潤[31]。一項(xiàng)針對30名mCRPC患者的研究顯示,多西他賽聯(lián)合替雷利珠單抗(PD-1抑制劑)治療相比于替雷利珠單抗單藥治療,可顯著延長患者中位PFS期3.12個(gè)月vs.1.70個(gè)月, P= 0.0044][31]。由此可知,微管蛋白抑制劑與免疫檢查點(diǎn)抑制劑聯(lián)用具有很大潛力,有望改善PCa免疫治療效果,但需更多臨床試驗(yàn)驗(yàn)證。

        3微管蛋白抑制劑在PCa中的耐藥機(jī)制及解決方案

        盡管微管蛋白抑制劑在PCa治療中取得了顯著的臨床療效,但出現(xiàn)的耐藥問題限制了其長期應(yīng)用。其耐藥機(jī)制復(fù)雜,涉及微管蛋白結(jié)構(gòu)改變、藥物外排增強(qiáng)等,為此研究者們開發(fā)了新型微管蛋白抑制劑(如VERU-111、ABI-231)。筆者總結(jié)了微管蛋白抑制劑在PCa中的耐藥機(jī)制及解決方案,以期為耐藥PCa患者提供更有效的治療選擇。

        3.1微管蛋白抑制劑在PCa中的耐藥機(jī)制

        3.1.1 ABCB1介導(dǎo)的藥物外排增加

        PCa對微管蛋白抑制劑(尤其是紫杉烷類藥物)的耐藥性復(fù)雜,涉及細(xì)胞內(nèi)在改變和腫瘤微環(huán)境,主要耐藥機(jī)制為三磷酸腺苷(adenosinetriphosphate,ATP)結(jié)合盒亞家族B成員1(ATP-bindingcassettesubfamilyBmem-ber1,ABCB1)通過水解ATP將抗癌藥物泵出腫瘤細(xì)胞,降低藥物濃度,削弱療效[32。研究表明,ABCB1過表達(dá)可導(dǎo)致PCa細(xì)胞對多西他賽和卡巴他賽耐藥,未經(jīng)化療的PCa患者ABCB1表達(dá)較低,而其經(jīng)多西他賽治療后ABCB1表達(dá)顯著升高[33]

        3.1.2 微管蛋白亞型表達(dá)異常

        微管蛋白亞型表達(dá)異常,特別是微管蛋白β3(tubu-linβ3,TUBB3)過表達(dá)會(huì)加速微管的解聚速率,抑制磷酸酶和張力蛋白同源物的表達(dá),激活磷脂酰肌醇3-激酶蛋白激酶B信號通路,增強(qiáng)腫瘤細(xì)胞耐藥性;另外,TUBB3還可介導(dǎo)多西他賽和卡巴他賽的交叉耐藥[34]。因此,TUBB3或?qū)⒊蔀樽仙纪轭愃幬锏哪退幧飿?biāo)志物,有助于治療前預(yù)測反應(yīng),優(yōu)化治療方案,避免耐藥。

        3.1.3 信號通路異常激活

        多西他賽耐藥PCa細(xì)胞中的白細(xì)胞介素11(inter-leukin-11,IL-11)自分泌增加,從而激活Janus激酶1(Ja-nuskinase1,JAK1)/信號轉(zhuǎn)導(dǎo)及轉(zhuǎn)錄活化因子4(signaltransducerandactivatoroftranscription4,STAT4)信號通路,進(jìn)一步STAT4磷酸化入核并與環(huán)磷酸腺昔反應(yīng)元件結(jié)合蛋白結(jié)合,調(diào)控抗凋亡基因表達(dá),增強(qiáng)腫瘤細(xì)胞存活能力和DNA修復(fù)能力,從而抵抗多西他賽的細(xì)胞毒性作用[35]。此外,在多西他賽耐藥PCa細(xì)胞中,Notch3表達(dá)上調(diào)并與TUBB3結(jié)合,從而激活促分裂原活化的蛋白質(zhì)激酶(mitogen-activated proteinkinase,MAPK)信號通路,進(jìn)而增強(qiáng)耐藥性;同時(shí),MAPK信號通路還可調(diào)控脂質(zhì)代謝,改變細(xì)胞膜組成和流動(dòng)性,減少藥物攝取和分布[3]。

        3.1.4 脂質(zhì)代謝重編程

        脂質(zhì)代謝重編程可顯著影響PCa對多西他賽的耐藥性。與多數(shù)腫瘤細(xì)胞依賴糖酵解產(chǎn)生能量的Warburg效應(yīng)不同,PCa細(xì)胞主要靠脂肪酸氧化來獲取能量[]。研究顯示,無脂肪飼料喂養(yǎng)可延長PCa異種移植小鼠的OS期,延緩mHSPC向mCRPC轉(zhuǎn)化[38]。PCa細(xì)胞脂代謝紊亂可導(dǎo)致脂肪酸合成酶(fattyacidsynthase,F(xiàn)ASN)過度表達(dá),驅(qū)動(dòng)脂肪酸合成,從而導(dǎo)致脂質(zhì)堆積,阻礙靶向微管蛋白的功能,增強(qiáng)耐藥性[39]。

        3.2微管蛋白抑制劑耐藥的解決方案

        3.2.1開發(fā)新型微管蛋白抑制劑與ABCB1抑制劑

        VERU-111是一種新型秋水仙堿類微管蛋白抑制劑,能抑制微管蛋白β轉(zhuǎn)錄,誘導(dǎo)微管解聚,抗腫瘤效果顯著。該藥物半數(shù)抑制濃度低,非ABCB1底物,對耐藥PCa細(xì)胞系抗增殖效果顯著。在 Ib/I 期試驗(yàn)中,VERU-111表現(xiàn)出良好的耐受性和療效,中位PFS期達(dá)12個(gè)月,目前已進(jìn)入Ⅲ期研究[40]。ABI-231同為新型秋水仙堿類微管蛋白抑制劑,能抑制微管蛋白聚合,誘導(dǎo)腫瘤細(xì)胞凋亡,克服紫杉醇耐藥PC-3細(xì)胞的耐藥性,脫靶風(fēng)險(xiǎn)低[41]。此外,已獲美國FDA批準(zhǔn)的新型ABCB1抑制劑(如 elacridar、zosuquidar、laniquidar和 tariquidar等)正在開發(fā)中,這些藥物在實(shí)驗(yàn)?zāi)P椭酗@示出逆轉(zhuǎn)紫杉烷類藥物耐藥的潛力,但在Ⅱ期臨床試驗(yàn)中因低特異性和毒性問題,應(yīng)用有限[42]。最新研究表明,非ABCB1底物藥物吉西他濱向?qū)ψ仙纪轭愃幬锬退幍腜Ca細(xì)胞展現(xiàn)出強(qiáng)烈的細(xì)胞毒性,有望為耐藥PCa患者提供新的治療選擇[43]

        3.2.2聯(lián)合使用FASN抑制劑與微管蛋白抑制劑

        FASN抑制劑與微管蛋白抑制劑的聯(lián)合使用,為解決PCa對紫杉烷類藥物耐藥提供了新途徑。研究表明,F(xiàn)ASN抑制劑(如TVB-3166、Fasnall)與多西他賽在對紫杉烷類藥物耐藥的PCa細(xì)胞(如PC3-TxR、DU145-TxR細(xì)胞)中顯示出明顯的協(xié)同效應(yīng),可顯著降低腫瘤細(xì)胞活力[44]。這表明FASN抑制劑能有效提升微管靶向藥物的抗腫瘤效果,為克服紫杉醇耐藥提供了新的治療思路。

        3.2.3 基于PROTAC技術(shù)開發(fā)降解劑

        蛋白質(zhì)降解靶向嵌合體(proteolysis-targetingchimeras,PROTAC)技術(shù)利用細(xì)胞的泛素-蛋白酶體系統(tǒng),促使蛋白質(zhì)降解來對抗腫瘤耐藥,與常規(guī)抑制劑相比,不易受突變影響,有望解決傳統(tǒng)藥物耐藥問題[4。化合物4f作為一種基于PROTAC技術(shù)開發(fā)的新型降解劑,可通過降解細(xì)胞色素P4501B1(cytochromeP450family1subfamilyBmember1,CYP1B1),顯著降低PCaDU145細(xì)胞對多西他賽的耐藥性,且對CYP1B1的選擇性指數(shù)為140.1,表現(xiàn)出良好的降解效率和選擇性;此外,其生物利用度較高,有望減少非特異性毒性[4。這種基于PROTAC技術(shù)的靶向降解策略在PCa耐藥治療中具有廣闊的應(yīng)用前景,值得進(jìn)一步深入研究。

        4總結(jié)與展望

        靶向微管蛋白的抗癌策略在PCa治療中潛力顯著。紫杉烷類藥物(如多西他賽、卡巴他賽)能抑制腫瘤生長并緩解免疫抑制,但長期使用易引發(fā)耐藥、中性粒細(xì)胞減少、神經(jīng)病變等副作用。為此,研究者們探索了多種新策略:一是開發(fā)靶向其他微管蛋白結(jié)合位點(diǎn)的藥物,包括能夠減少體內(nèi)毒性的納米制劑(如長春新堿納米制劑)和能克服TUBB3及ABCB1耐藥的新型抑制劑(如秋水仙堿位點(diǎn)抑制劑),但安全性仍需驗(yàn)證;二是采用雙靶點(diǎn)策略,聯(lián)合微管蛋白抑制劑與其他小分子藥物,以應(yīng)對藥物外排增加等多重耐藥機(jī)制,但可能引發(fā)新的耐藥問題。近年來,PROTAC技術(shù)因其獨(dú)特的蛋白降解機(jī)制受到關(guān)注,可靶向傳統(tǒng)不可成藥靶點(diǎn),有望克服耐藥性,然而,基于該技術(shù)制備的藥物分子量較大,易導(dǎo)致遞送困難,后續(xù)仍需進(jìn)一步優(yōu)化遞送系統(tǒng)。

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        (收稿日期:2025-02-10 修回日期:2025-05-29)

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