Bwe tugamba nti "kookolo", ekimu ku bigambo ebijja amangu mu birowoozo bye "chemotherapy". Abantu bangi batya obujjanjabi buno kubanga buvaako enviiri okugwa ate nga buzibu eri omubiri. Kyokka, olw’okukulaakulana kwa ssaayansi w’obusawo, enkola empya ziyingiziddwa mu nsi yonna ezisobola okutunuulira obutoffaali bwa kookolo bwokka ne zikendeeza nnyo ku kwonooneka kw’obutoffaali obulamu. Leero, tugenda kwogera ku nkola y’obujjanjabi ekoze enkulaakulana ennene mu nsi y’okujjanjaba kookolo, era ng’ekola ng’essasi ery’amagezi’. Oyo ye Antibody-Drug Conjugates, oba ADCs nga bwe tuziyita mu bufunze.
Mu ngeri ennyangu, kino Antibody-Drug Conjugate (ADC) kye ki?
Teebereza nti olina okutuusa ekipapula eri omuntu omu yekka mu kifo ekirimu abantu abangi. Kyandibadde kyangu kitya okuzuula omuntu oyo n’otuusa ekipapula mu kifo ky’okukigabira buli muntu? Ekyo ADC eno ky’ekola.
ADC kitundu kya bitundu bisatu nga bigattiddwa wamu. Okubeera omutuufu, kiringa ‘bbomu entegefu’ ekoleddwa mu tekinologiya.
1. Antibody: Kino ye ‘ekirungo ekitumanyisa’. Waliwo puloteyina ez’enjawulo (zino tuziyita ``tumor antigens'') ezibeera ku ngulu w’obutoffaali bwa kookolo bwokka. Antibody eno ekolebwa okugenda ne yeekwata ku puloteyina eziri ku butoffaali obwo obwa kookolo. Kiringa ekisumuluzo ekiyingira mu kkufulu yaakyo ekwatagana. Okuva obutoffaali obulamu bwe butalina puloteyina zino, ekirungo kino ekiziyiza obulwadde tekibakwatako. Olw'okuba bino bikolebwa mu ngeri ey'enjawulo mu laboratory, era tubiyita ``Monoclonal Antibody''.
2. Eddagala lya Chemotherapy: Kino kye kiri munda mu ppaasi eyo. Ekozesa eddagala eriweweeza ku kookolo ery’amaanyi ennyo okusinga eryo eriweebwa mu ddagala erya bulijjo. Olw’okuba kigenda butereevu mu katoffaali ka kookolo, kisobola okuwa eddagala ery’amaanyi nga tekirina bulabe ku butoffaali bulamu obuli ebweru.
3. Linker: Eno ye ‘gum’ ekwata omukessi (Antibody) ne bbomu (Chemo drug) wamu. Omulimu gw’ekiyungo kino kwe kukuuma eddagala nga terifuluma okutuusa ng’ekirungo ekiziyiza obulwadde kizudde akatoffaali ka kookolo ne kakiyingira. Oluvannyuma lw’akatoffaali ka kookolo okuyingira, ekiyungo kino kye kikutuka, ne kifulumya eddagala.
‘Mizayiro eno ey’ebiramu’ ekola etya?
Enkola eno enyuma nnyo. Ka tulabe ekibaawo mutendera ku mutendera.
- Omutendera 1: Eddagala lya ADC lifukibwa mu musuwa gw’omulwadde nga liyita mu saline solution.
- Omutendera 2: Eddagala lino litambula mu mubiri gwonna nga liyita mu musaayi. Kyokka bwe kitambula, ekitundu ky’obutoffaali obuziyiza endwadde kikola nga GPS, ne kizuula obutoffaali bwa kookolo we buli.
- Omutendera 3: Akatoffaali ka kookolo bwe kazuulibwa, ekiziyiza kigenda ne ‘kisibira’ ku puloteyina eyeetongodde (antigen) ku ngulu w’obutoffaali obwo.
- Omutendera 4: Bwe gusibirwa bwe guti, akatoffaali ka kookolo kalowooza nti kaagala kino, kale kasika ekipapula kino kyonna ekya ADC munda mu kyo.
- Omutendera 5: Bw’omala okuyingira mu katoffaali ka kookolo, enziyiza eziri munda zimenya ‘linker’ eyo.
- Omutendera 6: Ekiyungo bwe kimenyeka, eddagala ery’amaanyi ennyo erya kemotherapy eryali lisibiddwako lifuluma munda mu katoffaali ka kookolo.
- Omutendera 7: Olw’amaanyi g’eddagala lino, akatoffaali ka kookolo kasaanawo okuva munda.
Ekikulu nti enkola eno yonna ebeerawo munda mu katoffaali ka kookolo. N’olwekyo, okwonooneka kw’obutoffaali obulamu obugyetoolodde kutono nnyo. Kino kye kisinga okuganyula ADCs okusinga eddagala erya bulijjo.
Bika ki ebya kookolo ebijjanjabwa ne ADC?
ADC si bujjanjabi bwa kookolo wa bika byonna. Mu kiseera kino, abasawo balowooza ku bujjanjabi buno ku bika bya kookolo ebimu naddala ng’obujjanjabi obulala bulemereddwa (`(refractory cancer)`), kookolo akomyewo (`(recur)`), oba ng’asasaanye ebitundu by’omubiri ebirala (`(metastasize)`).
Kino ka twongere okukinnyonnyola mu kipande wansi.
| Ekika kya kookolo | Eby’okulabirako by’ebika bya kookolo ajjanjabwa |
|---|---|
| Kookolo w’omusaayi |
|
| Ebizimba Ebikalu |
Eddagala lya ADC eriwerako erikozesebwa mu nsi yonna
Waliwo dda eddagala lya ADC erisukka mu kkumi eryakkirizibwa ebitongole nga FDA mu Amerika. Ebimu ku byokulabirako bye bino:
- Brentuximab vedotin (Adcetris®): Ekozesebwa ku kookolo w’omusaayi nga Hodgkin lymphoma.
- Trastuzumab emtansine (Kadcyla®): Ekozesebwa ku kookolo w’amabeere alina HER2 asaasaanidde mu mubiri gwonna.
- Sacituzumab govitecan (Trodelvy®): Ekozesebwa ku kookolo w’amabeere ow’emirundi esatu ne kookolo w’ekibumba.
Tewali buzibu bwonna buva mu bujjanjabi buno?
Wadde nga kigambibwa nti "obulabe eri obutoffaali obulamu butono", kino tekitegeeza nti tewali buzibu bwonna buva mu bujjanjabi buno. Kyokka bw’ogeraageranya n’obujjanjabi obwa bulijjo, buno butera okuddukanyizibwa. Ebizibu ebibaawo bisobola okwawukana okusinziira ku mulwadde, okusinziira ku kika kya kookolo, omutendera gwe, n’obulamu bw’omulwadde okutwalira awamu.
Ttiimu yo eya oncology ejja kukulondoola nnyo mu kiseera kyonna eky’obujjanjabi bwo. Singa wabaawo ebizibu byonna ebibaawo, bajja kukuwa obujjanjabi obw’amangu.
Ebizibu ebitera okuvaamu:
- Obukoowu
- Okuziyira n’okusiiyibwa
- Okukendeera kw’omusaayi
- Leukopenia (omuwendo gw’obutoffaali obweru obutono) .
- Omuwendo gw’obutoffaali obutono mu musaayi (`(Thrombocytopenia)`)
- Obulwadde bw’okwetamwa okulya
- Okuziyira oba ekiddukano
- Okulumwa omutwe, omusujja
- Peripheral neuropathy - okuzimba n’okuwunya mu bitundu by’omubiri
- Okusiiyibwa kw’olususu
Kikulu nnyo okutegeeza omusawo mu bwangu ku kintu kyonna ku bino, ne bwe kiba nga kitono.
Tuyinza okuba n’essuubi mu bujjanjabi buno?
Yee, ddala. ADC bujjanjabi obuleese essuubi eppya eri abalwadde ba kookolo bangi. Okunoonyereza kulaga nti abalwadde abafuna obujjanjabi bwa ADC bawangaala nnyo okusinga abo abafuna obujjanjabi obwa bulijjo obw’eddagala lyokka.
Era omulimu guno gukulaakulana mangu nnyo. Mu kiseera kino, okugezesebwa kw’obujjanjabi okusoba mu 100 kugenda mu maaso okwetoloola ensi yonna. Bannasayansi bagezaako okukola ADCs ezisinga okukola obulungi ate nga zirina ebizibu ebitono ku bika bya kookolo ebisingawo. N’olwekyo, tusobola okusuubira nti mu biseera eby’omu maaso, tujja kusobola okufuna obujjanjabi buno obwa ‘magic bullet’ ku bika bya kookolo ebirala bingi.
Obubaka Obutwala Awaka
- Antibody-Drug Conjugates (ADCs) kika kya ddagala ‘ery’amagezi’ eritunuulira n’okulumba obutoffaali bwa kookolo bwokka.
- Kino kituusa eddagala ery’amaanyi ennyo eriziyiza kookolo butereevu mu katoffaali ka kookolo, ne kikendeeza ku kwonooneka kw’obutoffaali obulamu.
- Mu kiseera kino kino kikozesebwa ku bika bya kookolo ebimu byokka naddala ng’obujjanjabi obulala bulemye.
- Wadde ng’obujjanjabi buno buyinza okuba n’ebizibu, ttiimu yo ey’abasawo ejja kubiddukanya bulungi. Yogerako n’omusawo wo ku buzibu bwonna.
- ADC ssuubi ddene mu by’obujjanjabi bwa kookolo. Singa okunoonyereza kugenda mu maaso, emigaso gyayo gijja kwongera okugaziwa mu biseera eby’omu maaso.
- Bw’oba ggwe oba omuntu gw’omanyi alina kookolo, bulijjo muteese n’omusawo wo ow’obulwadde bwa kookolo ku ngeri y’obujjanjabi. Tosalawo ku ebyo byokka by’osoma ku Intaneeti.
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