Uburyo bwo kuvura indwara ya Myasthenia Gravis (MG) bwa CAR-T

Myasthenia Gravis (MG) ni indwara idakira y’ubwiyongere bw’umubiri iterwa n’uturemangingo tw’umubiri (cyane cyane uturemangingo twa anti-acetylcholine receptor, AchRAb) tubangamira itumanaho hagati y’imitsi n’imitsi, bigatera intege nke zihindagurika, ptosis, dysphagia, no mu bihe bikomeye bishobora guteza akaga mu buhumekero. Ku barwayi bafite MG idashobora guhumeka ariko bananirwa imiti isanzwe igabanya ubudahangarwa bw’umubiri, IVIG, FcRn inhibitors, n’indi miti igabanya ubudahangarwa bw’umubiri, uburyo bwo kuvura buracyari buke.

Uburyo bwa BIOOCUS bwo kuvura CD19/BCMA CAR-T bufite intego ebyiri bugaragaza uburyo bushya bwo kuvura uturemangingo twitwa autologous bukuraho neza uturemangingo twa B dutera indwara hamwe n’uturemangingo twa plasma dushinzwe gukora uturemangingo twitwa autoantibody, butanga ubushobozi bwo kugabanya cyane kandi burambye MG igoranye kuvura.

Ubuvuzi bwa CAR-T kuri MG ni uburyo bugezweho kandi bwihariye bwo kuvura indwara aho uturemangingo twa T tw’umurwayi twifashishwa mu gukora genetiki kugira ngo tugaragaze antigen za chimeric (CARs) zigamije CD19 (ku turemangingo twa B) na BCMA (ku turemangingo twa plasma). Nyuma yo kwaguka muri laboratwari, utwo turemangingo twa CAR-T twombi twongera gushyirwa mu murwayi, aho twongera kugabanya uturemangingo tw’ubudahangarwa bw’umubiri twitwa autoreactive MG, bityo bikagabanya urugero rwa AchRAb kandi bigasubiza imikorere y’imitsi.

Ubu buryo bwo kuvura indwara zo mu bwoko bwa "dual-target" bureba ibice by’uturemangingo n’ibice bya "humoral" by’ubwiyongere bw’umubiri, butanga uburyo bwo kongera kwiyubaka mu buryo bwuzuye ugereranije n’uburyo bwo kuvura indwara zo mu bwoko bwa "single-target" cyangwa ubundi buryo bwa gakondo.

• Iterambere ryihuse kandi rirambye ry'ibimenyetso: Kugabanuka cyane kw'umunaniro w'imitsi, ptosis, diplopia, dysarthria, n'intege nke z'amaguru.
• Kugabanuka kw'uturemangingo twa B twimbitse n'uturemangingo twa plasma: Kugabanuka kugaragara kandi kurambye kwa AchRAb n'umubare wose wa B-lymphocyte.
• Amanota yo kwa muganga yazamutse: Inyungu ikomeye mu manota ya Quantitative Myasthenia Gravis (QMG) na Activities of Daily Living (ADL).
• Umutekano mwiza: Yihanganirwa neza nta cytokine release syndrome (CRS) cyangwa uburozi bw'ubwonko bwagaragaye mu bavuwe.
• Birashoboka ko umuntu ashobora kugabanya igihe kirekire: Bigabanya cyangwa bikuraho gukenera imiti idakira yo kugabanya ubudahangarwa bw'umubiri.
• Byagenewe abantu ku giti cyabo kandi byumvikana neza: Ikoresha uturemangingo tw'umurwayi ubwe, bigabanya ibyago byo kwangwa.

1. Leukapheresis– Gukusanya uturemangingo twa T tw'umurwayi binyuze mu kubura amaraso mu miyoboro y'amaraso.
2. Ubwubatsi bw'ibinyabutabire– Uturemangingo twa T turahindurwa kugira ngo tugaragaze CD19 na BCMA CARs kandi twongererwe mu bigo bya GMP.
3. Gutunganya (niba bikenewe)- Gukuraho lymphodepletion mu buryo bw'igihe gito kugira ngo CAR-T ikoreshwe neza.
4. Infusion ya CAR-T– Gutera CD19 CAR-T mu mitsi rimwe (0.5×10⁶/kg) + BCMA CAR-T (1×10⁶/kg).
5. Gukurikirana no gukurikirana– Isuzuma rihoraho ry’ubwiyongere bwa CAR-T, urugero rwa AchRAb, umubare w’uturemangingo twa B, amanota ya QMG/ADL, n’imikorere y’ingingo mu gihe cy’amezi 12+.

• Urubuga rwa CD19/BCMA CAR-T rufite intego ebyiri rugezweho, rwagenewe by'umwihariko indwara ziterwa n'ubwiyongere bw'umubiri.
• Itsinda ry’abahanga mu gukora GMP ku rwego rw’isi n’abahanga mu kuvura indwara z’ubudahangarwa bw’umubiri bafite uburambe mu kuvura kanseri y’amaraso ndetse n’indwara ziterwa no kudakora neza kw’umubiri.
• Ubufasha mpuzamahanga ku barwayi: guhuza indimi nyinshi, kwimurira abarwayi ku kibuga cy'indege, gucumbika, no gukurikirana abarwayi igihe kirekire.
• Yagaragaye neza muri CAR-T mu ndwara ziterwa n’ubwiyongere bw’umubiri (harimo na SLE) ndetse no gutegura uburyo bwo kuvura umuntu ku giti cye.
• Kwita ku buryo bwuzuye kuva ku isuzuma mbere yo kuvurwa kugeza ku gukurikirana nyuma yo guterwa imiti.