Son y\u0131llarda kanser tedavisinde \u00e7\u0131\u011f\u0131r a\u00e7an geli\u015fmelerden biri olan imm\u00fcnoterapi, hastalar\u0131n kendi ba\u011f\u0131\u015f\u0131kl\u0131k sistemlerini kullanarak malign (k\u00f6t\u00fc huylu) h\u00fccrelerle sava\u015fmay\u0131 hedefleyen yenilik\u00e7i bir yakla\u015f\u0131md\u0131r. \u00d6zellikle cerrahi \u00f6ncesinde uygulanan neoadjuvan imm\u00fcnoterapi, t\u00fcm\u00f6rlerin k\u00fc\u00e7\u00fclt\u00fclmesini sa\u011flayarak cerrahi ba\u015far\u0131 oranlar\u0131n\u0131 art\u0131rmada umut vaat eden bir y\u00f6ntem olarak \u00f6ne \u00e7\u0131kmaktad\u0131r. Ancak, bu tedavi y\u00f6nteminin ba\u015far\u0131s\u0131n\u0131 \u00f6nceden tahmin etmek, klinik uygulamalarda kar\u015f\u0131la\u015f\u0131lan en b\u00fcy\u00fck zorluklardan biridir. Zhang ve arkada\u015flar\u0131n\u0131n 2025 y\u0131l\u0131nda BMC Cancer\u2019da yay\u0131mlad\u0131\u011f\u0131 \u00f6nc\u00fc \u00e7al\u0131\u015fma, neoadjuvan imm\u00fcnoterapiye verilen yan\u0131t\u0131 \u00f6nceden kestirmede kritik molek\u00fcler belirte\u00e7leri ortaya koyarak bu alanda \u00f6nemli bir bo\u015flu\u011fu doldurmaktad\u0131r.<\/p>\n
\u00c7al\u0131\u015fman\u0131n temelinde \u00e7oklu omik teknoloji kullan\u0131larak RNA dizilemesi ve geli\u015fmi\u015f proteomik analizler yer al\u0131yor. Ara\u015ft\u0131rmac\u0131lar, 16 mide kanseri hastas\u0131n\u0131n klinik deneme kapsam\u0131nda al\u0131nan \u00f6rneklerini derinlemesine inceledi. Bu sayede tedaviye iyi yan\u0131t verenler ile yan\u0131t vermeyenler aras\u0131ndaki belirgin gen ve protein ifade farkl\u0131l\u0131klar\u0131 saptand\u0131. En dikkat \u00e7ekici sonu\u00e7lardan biri, CD8A ve PGF proteinlerinin tedavi sonu\u00e7lar\u0131n\u0131 y\u00fcksek do\u011frulukla \u00f6ng\u00f6rebilmesi oldu. Bu iki molek\u00fcl, hastalar\u0131n ki\u015fiselle\u015ftirilmi\u015f tedavi stratejileri olu\u015fturulmas\u0131nda kullan\u0131labilecek potansiyele sahip.<\/p>\n
\u00c7al\u0131\u015fmada, t\u00fcm\u00f6r mikro\u00e7evresindeki ba\u011f\u0131\u015f\u0131kl\u0131k h\u00fccre pop\u00fclasyonlar\u0131 detayl\u0131 \u015fekilde analiz edildi. Weighted Gene Co-Expression Network Analysis (WGCNA) y\u00f6ntemi ile genler aras\u0131ndaki etkile\u015fimler haritaland\u0131 ve xCell isimli biyoinformatik ara\u00e7la RNA-seq verileri kullan\u0131larak ba\u011f\u0131\u015f\u0131kl\u0131k h\u00fccrelerinin oranlar\u0131 tahmin edildi. Sonu\u00e7lar, etkili yan\u0131t veren hastalarda sitotoksik CD8+ T h\u00fccreleri ile B h\u00fccrelerinin t\u00fcm\u00f6r dokusunda belirgince artt\u0131\u011f\u0131n\u0131 ortaya koydu. Bu durum, adaptif ba\u011f\u0131\u015f\u0131kl\u0131k sisteminin, neoadjuvan imm\u00fcnoterapinin ba\u015far\u0131s\u0131nda merkez\u00ee rol oynad\u0131\u011f\u0131n\u0131 g\u00f6stermektedir.<\/p>\n
Hasta gruplar\u0131, T\u00fcm\u00f6r Regresyon Derecesi (Tumor Regression Grade – TRG) kullan\u0131larak T1 (iyi yan\u0131t verenler – TRG0 ve TRG1) ve T2 (k\u00f6t\u00fc yan\u0131t verenler – TRG2 ve TRG3) olarak s\u0131n\u0131fland\u0131r\u0131ld\u0131. Bu iki grup aras\u0131ndaki molek\u00fcler yolak farklar\u0131, \u00f6zellikle inflamatuar sinyal ve miyeloid l\u00f6kosit aktivasyon s\u00fcre\u00e7lerinde keskin ayr\u0131mlar i\u00e7eriyordu. T1 grubunda g\u00f6zlenen y\u00fckselmi\u015f bu sinyal aktiviteleri, etkili bir ba\u011f\u0131\u015f\u0131kl\u0131k sistemi tetiklenmesinin t\u00fcm\u00f6r gerilemesinde hayati \u00f6nem ta\u015f\u0131d\u0131\u011f\u0131n\u0131 ortaya koydu.<\/p>\n
CD8A geni, \u03b1-zincirini kodlad\u0131\u011f\u0131 CD8 glikoproteiniyle tedavi yan\u0131t\u0131n\u0131 tahmin eden bir belirte\u00e7 olarak \u00f6n plana \u00e7\u0131kt\u0131. CD8A\u2019n\u0131n ROC (Al\u0131c\u0131 \u0130\u015fletim Karakteristi\u011fi) e\u011frisi alt\u0131ndaki alan (AUC) de\u011feri 1.000 gibi m\u00fckemmele yak\u0131n bir skor ald\u0131. Bu da CD8A ifade seviyesinin, iyi ve k\u00f6t\u00fc yan\u0131t veren hastalar\u0131n ay\u0131rt edilmesinde son derece g\u00fcvenilir oldu\u011funu g\u00f6sterdi. CD8+ sitotoksik T h\u00fccrelerinin aktivitesi, ba\u015far\u0131l\u0131 imm\u00fcnoterapi i\u00e7in kritik bir rol oynuyor.<\/p>\n
Buna kar\u015f\u0131l\u0131k, Plasenta B\u00fcy\u00fcme Fakt\u00f6r\u00fc (PGF) proteini hem anjiyogenezde hem de inflamatuar reg\u00fclasyonda i\u015flev g\u00f6r\u00fcyor. \u00c7al\u0131\u015fma, y\u00fcksek PGF d\u00fczeylerinin k\u00f6t\u00fc prognoz ve tedavi ba\u015far\u0131s\u0131zl\u0131\u011f\u0131 ile ili\u015fkilendirildi\u011fini ortaya koydu. Bu durum, ba\u011f\u0131\u015f\u0131kl\u0131k sisteminin etkinle\u015fmesinin t\u00fcm\u00f6r kontrol\u00fcnde \u00f6nemli oldu\u011funa i\u015faret ederken, PGF taraf\u0131ndan tetiklenen pro-anjiyogenik sinyallerin t\u00fcm\u00f6r direncine katk\u0131 sa\u011flad\u0131\u011f\u0131n\u0131 g\u00f6stermektedir. B\u00f6ylece t\u00fcm\u00f6r-imm\u00fcn etkile\u015fimin karma\u015f\u0131k do\u011fas\u0131 bir kez daha vurgulanm\u0131\u015f oldu.<\/p>\n
\u0130lgin\u00e7 bir \u015fekilde yap\u0131lan korelasyon analizleri, ba\u011f\u0131\u015f\u0131kl\u0131k h\u00fccreleri aras\u0131ndaki hassas dengenin de alt\u0131n\u0131 \u00e7izdi. CD8A ifadeleri ile dendritik h\u00fccre infiltrasyonu pozitif korelasyon g\u00f6sterirken, ba\u011f\u0131\u015f\u0131kl\u0131k aktivasyonunu bask\u0131layan Miyeloid Kaynakl\u0131 Supres\u00f6r H\u00fccreler (MDSC) ile ters y\u00f6nde ili\u015fkilendi. Bu bulgu, imm\u00fcnosupresif h\u00fccrelerin tedavi etkinli\u011fini nas\u0131l zay\u0131flatabilece\u011fini a\u00e7\u0131klarken, dendritik h\u00fccre aktivitesinin art\u0131r\u0131lmas\u0131n\u0131n anti-t\u00fcm\u00f6r ba\u011f\u0131\u015f\u0131kl\u0131\u011f\u0131n\u0131 g\u00fc\u00e7lendirebilece\u011fine i\u015faret ediyor.<\/p>\n
Teknik a\u00e7\u0131dan bak\u0131ld\u0131\u011f\u0131nda, RNA dizileme ile Olink proteomik verilerinin entegrasyonu; hem transkriptomik hem de proteomik seviyedeki verilerin \u00e7apraz do\u011frulanmas\u0131n\u0131 sa\u011flayarak belirte\u00e7lerin g\u00fcvenilirli\u011fini art\u0131rd\u0131. \u00c7oklu omik analizlerin birle\u015ftirilmesi, kanserin karma\u015f\u0131k biyolojisini anlamada ve tedavi ba\u015far\u0131 fakt\u00f6rlerini ortaya koymada e\u015fsiz bir \u00e7\u00f6z\u00fcm sundu. Bu y\u00f6ntemler, klinik uygulamalarda molek\u00fcler a\u011flar\u0131n daha net kavranmas\u0131n\u0131 sa\u011fl\u0131yor.<\/p>\n
\u0130leriye d\u00f6n\u00fck olarak, bu bilimsel ilerlemenin klinik uygulamalara yans\u0131mas\u0131 olduk\u00e7a \u00f6nemli. E\u011fer geni\u015f hasta gruplar\u0131nda do\u011frulan\u0131rsa, CD8A ve PGF protein seviyelerinin tedavi \u00f6ncesi profilleme s\u00fcrecine dahil edilmesi m\u00fcmk\u00fcn olabilir. B\u00f6ylelikle y\u00fcksek CD8A ve d\u00fc\u015f\u00fck PGF seviyelerine sahip hastalar neoadjuvan imm\u00fcnoterapi i\u00e7in \u00f6nceliklendirilirken, olumsuz biyobelirte\u00e7 profili g\u00f6r\u00fclenlerde alternatif ya da destekleyici tedavi se\u00e7enekleri de\u011ferlendirilebilir.<\/p>\n
Ayr\u0131ca, PGF arac\u0131l\u0131 patolojiyi hedefleyen tedaviler, pro-anjiyogenik s\u00fcre\u00e7leri engelleyerek imm\u00fcnoterapinin etkinli\u011fini art\u0131rabilir. Benzer bi\u00e7imde, CD8+ T h\u00fccreleri ve dendritik h\u00fccre aktivitelerinin g\u00fc\u00e7lendirilmesi, MDSC aktivitesinin bask\u0131lanmas\u0131 gibi stratejilerle mevcut imm\u00fcnoterapi rejimleri ile kombine edilerek daha kapsaml\u0131 bir tedavi yakla\u015f\u0131m\u0131 geli\u015ftirilebilir. Bu da mide kanserinde tedavi ba\u015far\u0131s\u0131n\u0131 ve hasta sa\u011fkal\u0131m\u0131n\u0131 art\u0131rabilecek umut verici bir alan yaratmaktad\u0131r.<\/p>\n
Bu \u00e7al\u0131\u015fma kanser imm\u00fcnolojisindeki heterojeniteye ve onkolojide ki\u015fiye \u00f6zg\u00fc terapinin ka\u00e7\u0131n\u0131lmaz gereklili\u011fine g\u00fc\u00e7l\u00fc bir vurgu yapmaktad\u0131r. Neoadjuvan imm\u00fcnoterapinin t\u00fcm potansiyelinin a\u00e7\u0131\u011fa \u00e7\u0131kar\u0131lmas\u0131 i\u00e7in sadece yeni tedavi yakla\u015f\u0131mlar\u0131na de\u011fil, ayn\u0131 zamanda molek\u00fcler d\u00fczeyde derin anlama da ihtiya\u00e7 vard\u0131r. Zhang ve arkada\u015flar\u0131n\u0131n \u00e7ok katmanl\u0131 analizleri bu ihtiyac\u0131 gidermek ad\u0131na \u00f6nemli bir \u00f6rnek te\u015fkil eder.<\/p>\n
Son olarak, t\u00fcm\u00f6r mikro\u00e7evresindeki ba\u011f\u0131\u015f\u0131kl\u0131k h\u00fccreleri, bask\u0131lay\u0131c\u0131 h\u00fccreler ve sinyal proteinlerinin kar\u015f\u0131l\u0131kl\u0131 etkilerinin tedavi sonu\u00e7lar\u0131n\u0131 y\u00f6nlendirdi\u011fini g\u00f6stermek, bu ortam\u0131 imm\u00fcn yan\u0131t lehine \u015fekillendirmek i\u00e7in bilimsel ve klinik \u00e7al\u0131\u015fmalar\u0131n h\u0131zland\u0131r\u0131lmas\u0131 gereklili\u011fini ortaya koymaktad\u0131r. Daha b\u00fcy\u00fck hasta gruplar\u0131 ve uzun d\u00f6nemli \u00f6rneklemelerle metabolomik ve epigenomik gibi ek omik yakla\u015f\u0131mlar\u0131n entegrasyonu, diren\u00e7 mekanizmalar\u0131n\u0131n \u00e7\u00f6z\u00fclmesini ve biyobelirte\u00e7 panellerinin geli\u015ftirilmesini sa\u011flayacakt\u0131r.<\/p>\n
\u00d6zetle, Zhang ve ekibi neoadjuvan imm\u00fcnoterapi g\u00f6ren mide kanseri hastalar\u0131nda tedavi yan\u0131t\u0131n\u0131 etkileyen molek\u00fcler belirte\u00e7ler olarak CD8A ve PGF\u2019yi tan\u0131mlayarak \u00f6nemli bir ad\u0131m att\u0131. Bu ara\u015ft\u0131rma, imm\u00fcn profilizasyon ve protein ekspresyon analizlerinin hasta se\u00e7imi ve tedavi ki\u015fiselle\u015ftirilmesinde devrim yaratabilece\u011fini g\u00f6stererek, zorlay\u0131c\u0131 bir hastal\u0131kta hasta ya\u015fam kalitesini ve sa\u011fkal\u0131m\u0131n\u0131 art\u0131rma ad\u0131na \u00fcmit vadeden bir vizyon sunuyor.<\/p>\n
—<\/p>\n
Ara\u015ft\u0131rma Konusu<\/strong>: Makale Ba\u015fl\u0131\u011f\u0131<\/strong>: Haberin Yay\u0131n Tarihi<\/strong>: Web References<\/strong>: Doi Referans<\/strong>: Resim Credits<\/strong>: Anahtar Kelimeler<\/strong>: Son y\u0131llarda kanser tedavisinde \u00e7\u0131\u011f\u0131r a\u00e7an geli\u015fmelerden biri olan imm\u00fcnoterapi, hastalar\u0131n kendi ba\u011f\u0131\u015f\u0131kl\u0131k sistemlerini kullanarak malign (k\u00f6t\u00fc huylu) h\u00fccrelerle sava\u015fmay\u0131 hedefleyen yenilik\u00e7i bir yakla\u015f\u0131md\u0131r. \u00d6zellikle cerrahi \u00f6ncesinde uygulanan neoadjuvan imm\u00fcnoterapi, t\u00fcm\u00f6rlerin k\u00fc\u00e7\u00fclt\u00fclmesini sa\u011flayarak cerrahi ba\u015far\u0131 oranlar\u0131n\u0131 art\u0131rmada umut vaat eden bir y\u00f6ntem olarak \u00f6ne \u00e7\u0131kmaktad\u0131r. Ancak, bu tedavi y\u00f6nteminin ba\u015far\u0131s\u0131n\u0131 \u00f6nceden tahmin etmek, klinik uygulamalarda…<\/p>\n","protected":false},"author":1,"featured_media":2611,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_focuskw":"","rank_math_title":"","rank_math_description":"","rank_math_focus_keyword":"","_wpan_schema_json_ld":"","_wpan_ai_seo_metadata":"","_wpan_ai_seo_status":"","_wpan_ai_seo_policy":"","_wpan_ai_seo_faq_block":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[28],"tags":[101,102,100,104,103],"tmauthors":[],"class_list":{"0":"post-2610","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-kanser","8":"tag-cd8a-ve-pgf-protein-belirtecleri","9":"tag-mide-kanserinde-immunoterapi-molekuler-biyobelirtecleri","10":"tag-neoadjuvan-immunoterapi-tedavi-basarisi-tahmini","11":"tag-rna-dizilemesi-ve-proteomik-immunoterapi-calismalari","12":"tag-tumor-mikrocevresi-bagisiklik-hucre-analizi"},"jetpack_featured_media_url":"https:\/\/haber360.com\/wp-content\/uploads\/2025\/04\/CD8A-ve-PGF-ile-Immunoterapi-Basari-Tahmini-1744741771.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/posts\/2610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/comments?post=2610"}],"version-history":[{"count":0,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/posts\/2610\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/media\/2611"}],"wp:attachment":[{"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/media?parent=2610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/categories?post=2610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/tags?post=2610"},{"taxonomy":"tmauthors","embeddable":true,"href":"https:\/\/haber360.com\/index.php\/wp-json\/wp\/v2\/tmauthors?post=2610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nMide kanseri hastalar\u0131nda neoadjuvan imm\u00fcnoterapiye yan\u0131t ve prognostik belirte\u00e7lerin molek\u00fcler d\u00fczeyde ara\u015ft\u0131r\u0131lmas\u0131.<\/p>\n
\nPotential predictive value of CD8A and PGF protein expression in gastric cancer patients treated with neoadjuvant immunotherapy.<\/p>\n
\n2025<\/p>\n
\nhttps:\/\/doi.org\/10.1186\/s12885-025-14046-7<\/p>\n
\nhttps:\/\/doi.org\/10.1186\/s12885-025-14046-7<\/p>\n
\nScienmag.com<\/p>\n
\nKanserde imm\u00fcnoterapi yenilikleri, tedavi yan\u0131t\u0131 tahmini, CD8A belirteci, mide kanseri klinik denemeleri, t\u00fcm\u00f6r mikro\u00e7evresi ba\u011f\u0131\u015f\u0131kl\u0131k h\u00fccreleri, \u00e7oklu omik yakla\u015f\u0131mlar, neoadjuvan imm\u00fcnoterapi, ki\u015fiselle\u015ftirilmi\u015f kanser tedavisi, PGF protein rol\u00fc, proteomik ve RNA dizilemesi, imm\u00fcnoterapi molek\u00fcler biyolojisi, tedavi direnci mekanizmalar\u0131<\/p>\n","protected":false},"excerpt":{"rendered":"