Camptothecin (CPT)yog ib tug natural alkaloid nrog broad antitumor kev ua. Nws tau xub pom los ntawm cov tawv ntoo ntawm Camptotheca acuminata hauv tsev neeg Camptotheca, thiab tom qab ntawd tau txais los ntawm lwm cov nroj tsuag, kab mob, thiab cov khoom siv hluavtaws. Kab lus no yuav piav qhia txog txhua yam kev siv Camptothecin, suav nrog kev kho mob qog noj ntshav, DNA topoisomerase inhibitors, thiab lwm yam kev siv tshuaj lom neeg.
1. Anticancer tus neeg sawv cev kho mob:
Camptothecin yog cov muaj zog antineoplastic tus neeg sawv cev uas tau txais kev saib xyuas thoob plaws vim tias nws tiv thaiv kev tsis thaiv cov txheej txheem helical ntawm DNA thaum rov ua dua thiab hloov pauv los ntawm kev ua kom DNA topoisomerase I. Nws los ntawm ntau hom tshuaj, nrog rau qhov ncauj, tso zis, thiab tshuaj xa cov twj. . Camptothecin thiab nws cov derivative compounds tau siv dav hauv cov tshuaj ib leeg thiab kev siv tshuaj khomob ua ke los kho cov qog noj ntshav, xws li mob qog noj ntshav ntawm zes qe menyuam, mob qog noj ntshav, mob qog noj ntshav, thiab mob qog noj ntshav tsis me me thiab lwm yam qog nqaij hlav malignant.
2. DNA Topoisomerase Inhibitor (DNA Topoisomerase Inhibitor):
Camptothecin tuaj yeem xaiv inhibit qhov kev ua ntawm DNA topoisomerase I (TopoI), uas yog lub luag haujlwm rau kev so lub supercoil ntawm DNA ob lub strands thiab ua lub luag haujlwm tseem ceeb hauv cov txheej txheem ntawm DNA replication thiab transcription. Camptothecin khi rau qhov chaw sib cuam tshuam ntawm Topo I enzyme thiab DNA los tsim ib qho nyuaj, uas tuaj yeem kaw qhov Topo I enzyme-DNA complex thiab ua rau DNA ib leeg-strand so, yog li tua cov qog hlwb. Cov analogues ntawm camptothecin inhibited Topo II tsawg dua. Yog li, Camptothecin tuaj yeem yog Topo I tshwj xeeb tshuaj tiv thaiv kab mob.
3. Kev Kho Mob ntawm Williams Syndrome:
Williams Syndrome yog ib hom kab mob caj ces uas tshwm sim los ntawm kev tshem tawm ntawm caj npab ntev ntawm chromosome 7. Cov tsos mob muaj xws li kev puas hlwb, lub ntsej muag deformities, qw teb, kab mob plawv, thiab lwm yam. Cov kev tshawb fawb tsis ntev los no tau pom tias Camptothecin tuaj yeem cuam tshuam chromosome deletion cov tsos mob xws li Williams syndrome los ntawm txo thiab rov ua haujlwm ntawm plaub-dimensional transcription factor (EZH2). Qhov kev tshawb fawb no qhib cov hauv kev tshiab rau kev kho mob Williams syndrome.
4. Kev tshawb fawb txog supercyclization:
Hyperhybridin yog ib hom tshuaj tshiab, uas yog tsim los ntawm cyclic peptide thiab kev sib txuas ntawm ob CPT molecules, thiab tam sim no yog qhov chaw tshawb fawb hotspot. Tsis zoo li cov txheej txheem peptide synthesis, kev tsim kho ntawm hyperhybridins yuav tsum "faus" ob lub tebchaw hauv cyclic peptide. Yog li ntawd, cov synthesis ntawm hyperhybridins xav tau kev txhim kho cov txheej txheem kev sib txuas tshiab, thiab Camptothecin thiab nws cov derivatives nquag yog cov neeg sib tw tseem ceeb rau cov txheej txheem no.
5. Kev siv Camptothecin tracer reagent:
Camptothecin derivatives kuj tau siv dav hauv kev tshawb fawb lom neeg xws li Camptothecin tracer reagents. Cov camptothecin derivatives no tuaj yeem cuam tshuam nrog TEL(P)-binding proteins xws li TRF1 lossis TRF2, lossis cuam tshuam nrog Fe3 ntxiv, Cu2 ntxiv rau plasmonic systems. Qhov kev sib cuam tshuam no tuaj yeem ua rau muaj kev xaiv ntau rau lub hom phiaj protein, ntxiv rau txoj kev cuam tshuam rau kev tshawb fawb biophysical chemistry.
Hauv cov ntsiab lus, Camptothecin thiab nws cov tebchaw muaj ntau yam kev siv hauv kev tshawb fawb biomedical. Hauv kev kho mob qog noj ntshav, Camptothecin yog ib qho tshuaj tiv thaiv kab mob zoo tshaj plaws thiab tuaj yeem ua ke nrog ntau yam tshuaj los txhim kho cov txiaj ntsig kho. Hauv kev tshawb fawb DNA topoisomerase, Camptothecin tsis yog siv los kho mob qog noj ntshav xwb, tab sis kuj tau qhib txoj hauv kev tshiab rau kev tshawb fawb hauv daim teb no. Hauv lwm qhov chaw, xws li Williams syndrome, hyperhybridine synthesis thiab biophysical chemistry tshawb fawb, daim ntawv thov ntawm Camptothecin thiab nws cov derivatives kuj tau ua tiav.
Camptothecin (CPT), cov nroj tsuag ntuj alkaloid feem ntau pom muaj nyob hauv Camptothecaceae cov nroj tsuag nyob rau sab qab teb Tuam Tshoj, muaj ntau yam kev ua ub no. Los ntawm cov qauv tshuaj ntawm qhov pom, CPT molecule yog lub nplhaib condensed polycyclic aromatic compound nplua nuj nyob rau hauv nitrogen, aromatic nplhaib thiab pyrrole nplhaib. Nws cov alkaloid tsis tsuas yog muaj dav-spectrum anticancer kev ua, tab sis kuj muaj kev xaiv toxicity rau mob qog noj ntshav. Cov tshuaj muaj kev nyab xeeb heev thiab muaj ntau yam kev ua haujlwm.
Lub pharmacodynamic mechanism ntawm CPT tshuaj nyob rau hauv lub cev yog feem ntau muaj feem xyuam rau nws ua ke nrog DNA. CPT tuaj yeem cuam tshuam nrog cov pab pawg acid hauv DNA, thiab inhibit qhov kev ua ntawm DNA topoisomerase I (Topo I) thaum lub sijhawm cov txheej txheem tshuaj tiv thaiv. , ua rau DNA raug kev txom nyem ib leeg-strand so thiab ua rau nws nyuaj rau replicate, yog li inhibiting cell proliferation thiab faib, thiab inducing apoptosis ntawm lub hom phiaj hlwb hlwb. Txawm li cas los xij, nrog kev siv tshuaj ntau, cov teeb meem ntawm cov tshuaj tiv thaiv thiab cov kev mob tshwm sim ntawm cov neeg mob kuj tshwm sim. Yog li ntawd, nws tau dhau los ua ib qho kev taw qhia rau cov kws tshawb fawb los nrhiav cov hlau muaj zog zoo li lwm txoj hauv kev.
CPT yog ib chav kawm ntawm cov tshuaj siv dav hauv kev kho cov qog, uas yog topoisomerase inhibitors. Nws tuaj yeem cuam tshuam cov kev ua ntawm DNA topoisomerase I, yog li hloov cov qauv ntawm DNA; vim tias nws cov qauv zoo ib yam li IR receptors, nws tau qhib los ntawm IR hauv vivo, thiab nws tuaj yeem ua tiav cov txiaj ntsig kho mob zoo dua los ntawm kev siv sib xyaw nrog lwm cov tshuaj. Cov tshuaj CPT tau ua rau muaj kev cia siab ntau dua rau cov neeg mob qog noj ntshav, tab sis nrog rau nws tuaj yeem tshwm sim thiab tshwm sim ntawm cov tshuaj tiv thaiv. Nyob rau hauv teb rau cov teeb meem no, ntau CPT derivatives raws li cov hlau complexes tau tshwm sim nyob rau hauv xyoo tas los no. Cov derivatives no tuaj yeem tsis tsuas yog tau txais txiaj ntsig ntawm kev kho mob ntawm CPT, tab sis kuj txo cov kev mob tshwm sim thiab kev siv tshuaj tiv thaiv, yog li lawv tau dhau los ua ib qho ntawm cov chaw kub hauv kev tshawb fawb ntawm CPT derivatives. . CPT yog ib qho tshuaj tiv thaiv kab mob zoo heev thiab muaj ntau yam kev siv hauv kev kho mob qog.