"Imbumbulu yomlingo" yokulwa nomhlaza: Masifunde nje ngee-Antibody-Drug Conjugates (ii-ADC)!

Xa ucinga ngonyango lomhlaza, i-chemotherapy ifika engqondweni yakho ngoko nangoko, akunjalo? Siyazi njengonyango oluhamba emzimbeni wonke, oluchaphazela iiseli zomhlaza kunye neeseli eziphilileyo, kwaye lunemiphumo emibi kakhulu. Kodwa khawucinge ukuba kukho indlela yokufumana indawo echanekileyo yeseli yomhlaza, uyinike iyeza, kwaye utshabalalise umhlaza ngaphandle kokulimaza iiseli eziphilileyo ezikufutshane. Yiloo nto siza kuthetha ngayo namhlanje. Oku kubizwa ngokuba yi-Antibody-Drug Conjugates, okanye ii-ADCs ngamafutshane.

Ngamafutshane, yintoni le Antibody-Drug Conjugate (ADC)?

I-ADC bubuchwepheshe obutsha nobuthembisayo kwihlabathi lonyango lomhlaza. Kule nto, sisebenzisa indibaniselwano yeendlela ezimbini eziphambili zonyango: Unyango olujoliswe ekujoliswe kulo kunye nonyango lweKhemotherapy.

Cinga ngayo 'njenge -missile ekhokelwayo' . I-missile inokufumana ithagethi yayo ize iyibethe kuphela. Ngokufanayo, unyango lwe-ADC lufumana kwaye lutshabalalise iiseli zomhlaza phakathi kweebhiliyoni zeeseli emzimbeni. Okwenzekayo koku kukuba iyeza elinamandla kakhulu le-chemotherapy lithathwa ngokukhuselekileyo liye kwiseli yomhlaza kwaye lifakwe kuyo kuphela. Oku kuthetha ukuba impembelelo yeyeza le-chemotherapy kwiiseli eziphilileyo incinci.

Iingcali zomhlaza zihlala zisebenzisa olu nyango lwe-ADC uku:

• Ukuba umhlaza uphinde wavela .
• Ukuba ezinye iindlela zonyango aziphumeleli (umhlaza onganyangekiyo) .
• Ukuba umhlaza usasazeka kwezinye iindawo zomzimba (usasazeka) .

Unyango lwe-ADC lusenokungawunyangi ngokupheleleyo umhlaza, kodwa uphando lubonise ukuba abaguli abafumana olu nyango banethuba elide lokusinda .

Kulungile, ngoko ke le 'magic bullet' ebizwa ngokuba yi-ADC isebenza njani?

Oku kungabonakala kunzima ukukuqonda, kodwa masikuqonde ngomzekelo olula. Khawucinge ukuba ipasela e-odolwe kwi-intanethi iziswe ekhayeni lakho.

Le phakheji ye-ADC inamacandelo amathathu aphambili:

1. I-Monoclonal Antibody: Le yiarhente yethu yokuhambisa. Le yiproteni ekhethekileyo eyenziwa kwilebhu. Inamandla amangalisayo okubona uphawu oluthile kumphezulu weeseli zomhlaza (esizibiza ngokuba zii -Tumor Antigens ). Kanye njengokuba isitshixo singena kwisitshixo, le antibody iya kuloo phawu kwiseli yomhlaza ize inamathele kuyo. Ayinamatheli nakwezinye iiseli eziphilileyo.

2. Iyeza elithile le-chemotherapy:Le yiphakheji ehanjiswayo. La ngamayeza anamandla kakhulu kune-chemotherapy eqhelekileyo. Kodwa ukuba eli yeza lithunyelwa emzimbeni lodwa, linokubangela umonakalo omkhulu kwiiseli ezisempilweni. Yiyo loo nto silithumela kwiarhente yokuhambisa.

3. Iproteni ethi "Linker": Le yinxalenye efana 'negum' edibanisa iarhente yokuhambisa kunye nephasela. Inemisebenzi emibini. Eyokuqala kukubamba iphasela (iyeza le-chemotherapy) ngokuqinileyo de iarhente yokuhambisa (i-antibody) ifumane iseli yomhlaza. Eyesibini neyona nto ibalulekileyo kukukhulula iphasela kwaye uyithumele ngaphakathi kwiseli yomhlaza xa ifika kwindawo efanelekileyo.

Nantsi indlela ezi zintathu ezisebenzisana ngayo:

• Xa iyeza le-ADC lifakwa emzimbeni, iarhente yokuhambisa (i-antibody) ihamba emzimbeni wonke ize ifune iiseli zomhlaza.
• Xa kufunyenwe iseli yomhlaza, iya kumphezulu wayo ize inamathele kuyo.
• Emva koko, iseli yomhlaza itsala le ADC ngaphakathi.
• Nje ukuba ingaphakathi kwiseli, loo linker iyaphuka, kwaye iphakheji (iyeza le-chemo) iyakhululwa.
• Eli yeza linamandla litshabalalisa iiseli zomhlaza ezingaphakathi kuzo.

Zeziphi iintlobo zomhlaza ezinyangwa nge-ADC?

Okwangoku, unyango lwe-ADC alusetyenziswa kuzo zonke iintlobo zomhlaza. Nangona kunjalo, olu nyango luvunyiwe kwiintlobo ezahlukeneyo zomhlaza. Olu luhlu lunokukhula kwixesha elizayo.

Amayeza amaninzi e-ADC asetyenziswayo ngoku

Okwangoku kukho amayeza e-ADC angaphezu kweshumi elinesibini avunyiweyo yi-US FDA. Eminye imizekelo yile:

• I-Brentuximab vedotin (Adcetris®): Enye yee-ADC zokuqala ukufumana imvume ye-FDA. Isetyenziselwa ukunyanga umhlaza wegazi ofana ne-Hodgkin lymphoma kunye ne-anaplastic large cell lymphoma.
• I-Trastuzumab emtansine (Kadcyla®): Isetyenziselwa ukunyanga umhlaza webele one-HER2-positive osasazeke emzimbeni wonke.
• I-Sacituzumab govitecan (Trodelvy®): Unyango lomhlaza webele ongasebenziyo, ophucukileyo oneempawu ezintathu. Ikwasetyenziswa kumhlaza womchamo ophucukileyo.

Abaphandi okwangoku baphanda ukuba la mayeza angasetyenziselwa ezinye iintlobo zomhlaza kunye nezifo ezingezizo zomhlaza. Zingaphezulu kwe-100 iimvavanyo zonyango eziqhubekayo kwihlabathi liphela.

Ziziphi iingenelo eziphambili zonyango lwe-ADC?

Eyona nzuzo inkulu nebaluleke kakhulu yolu nyango kukuba lunokuhambisa amayeza e-chemotherapy ngqo kwiiseli zomhlaza ngaphandle kokulimaza iiseli eziphilileyo. Oku kuvumela oogqirha ukuba basebenzise amayeza e-chemotherapy anamandla kakhulu ngaphandle kokoyika ukulimaza iiseli eziphilileyo.

Kwi-chemotherapy yendabuko, eli yeza lihanjiswa ngemithambo yegazi emzimbeni wonke. Oku kubizwa ngokuba yi-systemic chemotherapy. Xa eli yeza lihamba emzimbeni wonke ngale ndlela, aligcini nje ngokonakalisa iiseli zomhlaza ezahlula ngokukhawuleza, kodwa liyonakalisa neeseli ezisempilweni ezifana neeseli zethu zeenwele, iiseli eziphilisa amanxeba emlonyeni wethu, kunye neeseli ezenza igazi. Esi sesona sizathu siphambili seziphumo ebezingalindelekanga ezongezelelekileyo.

Kodwa le ngxaki ayixhaphakanga kangako kunyango lwe-ADC. Yiyo loo nto abanye oogqirha be-oncology besebenzisa amagama anjengelithi "magic bullet" kunye nelithi "precision treatment" kolu nyango.

Njengayo yonke enye into, ngaba kukho naziphi na iziphumo ebezingalindelekanga koku?

Ewe. Unyango lwe-ADC lunokubangela iziphumo ebezingalindelekanga. Kodwa ezi zihlala zimbalwa kuneze-chemotherapy zendabuko. Iziphumo ebezingalindelekanga ezenzekayo zinokuhluka kwisigulana ngasinye. Oku kuxhomekeke kwizinto ezifana nohlobo lomhlaza onawo, inqanaba lomhlaza, kunye nempilo yakho iyonke.

Ukuba ufumana unyango lwe-ADC, iqela lakho lezonyango liza kukujonga ngokusondeleyo. Ukuba kukho naziphi na iziphumo ebezingalindelekanga, baza kusebenza ukuze bazinyange ngokukhawuleza.

Luphumelela kangakanani unyango lwe-ADC?

Ngokubanzi, uphando lubonisa ukuba izigulana ezifumana unyango lwe-ADC ziphila ixesha elide kunezigulana ezifumana unyango lwe-chemotherapy yesintu yohlobo olufanayo lomhlaza. Nangona kunjalo, iziphumo zinokuhluka kumntu nomntu. Kukho izinto ezininzi ezinokuchaphazela oku:

• Uhlobo lomhlaza: Unyango lwe-ADC lusebenza kakhulu kwezinye iintlobo zomhlaza. Lusenokungasebenzi kangako kwezinye.
• Inqanaba lomhlaza: Ukunyanga umhlaza osasazeke emzimbeni wonke kusoloko kuyingxaki.
• Impilo yakho iyonke: Olu nyango lunokubangela iziphumo ebezingalindelekanga ezinzulu, ngoko ke umzimba wakho kufuneka ukwazi ukulunyamezela. Ugqirha wakho womhlaza uza kukuchazela kakuhle oku ngaphambi kokuba akunike olu nyango.

Igama elithi "ithemba" lixabiseke kakhulu kumntu olwa nomhlaza. Unyango lwe-ADC lithemba elitsha kakhulu. Olu nyango lunokunceda izigulane eziye zasilela kwezinye iindlela zonyango kwaye umhlaza wazo obuye wabuya ziphila ixesha elide kwaye ziphila ubomi obungcono.