Video: Lub luag haujlwm tseem ceeb ntawm cytotoxic T cells yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cytotoxic T lymphocytes (CTLs) sawv cev rau ib ntawm ob peb hom hlwb ntawm lub cev tiv thaiv kab mob uas muaj peev xwm ncaj qha tua lwm tus hlwb . Lawv ua si a loj Lub luag haujlwm hauv tus tswv tsev tiv thaiv kab mob kis kab mob, nrog rau kev kis kab mob los ntawm lwm cov kab mob hauv lub cev uas rov ua dua hauv cytoplasm ntawm tus tswv tsev. ntawm tes.
Hais txog qhov no, lub luag haujlwm ntawm cytotoxic T cells thiab piav qhia lawv cov txheej txheem ntawm kev nqis tes ua yog dab tsi?
Ib hom lymphocyte uas tua tus kab mob hlwb , mob qog noj ntshav hlwb , thiab transplanted hlwb thaum qhib Dendritic hlwb , macrophages, thiab B. hlwb . Lub npe rau qhov tseem ceeb luag hauj lwm hauv kev nthuav tawm cov antigens sab hauv rau tus pab T hlwb.
Ib yam li ntawd, muaj pes tsawg hom T cell yog cytotoxic? Muaj ob qhov loj hom ntawm T hlwb : ua pab T cell thiab cov cytotoxic T cell . Raws li cov npe qhia pab T cells 'pab' lwm tus hlwb ntawm lub cev tiv thaiv kab mob, thaum cytotoxic T hlwb tua tus kab mob virally hlwb thiab qog.
Kuj nug, dab tsi yog lub luag haujlwm ntawm tus pab cytotoxic thiab nco T cells?
siv loj. Pab T cells tsis txhob tua tus kab mob ncaj qha hlwb , ua cytotoxic T hlwb ua. Hloov chaw lawv pab qhib cytotoxic T hlwb thiab macrophages rau kis kab mob hlwb , los yog lawv txhawb B cells rau zais cov tshuaj tiv thaiv.
Kev ua haujlwm ntawm T cells tswj hwm yog dab tsi?
Kev tswj hwm T cells (Tregs) yog ib pawg neeg tshwj xeeb ntawm T hlwb uas ua rau suppress lub cev tiv thaiv kab mob, yog li tswj hwm homeostasis thiab kev zam rau tus kheej. Nws tau pom tias Tregs muaj peev xwm inhibit T cell kev loj hlob thiab cytokine ntau lawm thiab ua qhov tseem ceeb luag hauj lwm hauv kev tiv thaiv autoimmunity.
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