Atopic dermatitis (AtD) yog ib hom kab mob ntawm daim tawv nqaij mob uas tshwm sim los ntawm kev cuam tshuam ntawm daim tawv nqaij -kev ua haujlwm tsis zoo, Th2- cov tshuaj tiv thaiv kab mob tseem ceeb, thiab cov kab mob rov ua dua tshiab. Txhawm rau txhawb txoj kev loj hlob ntawm cov tshuaj tiv thaiv kab mob tom ntej, biologics, thiab cov tshuaj pleev ib ce, Prisys Biotechnologies tau tsim kom muaj lub zog tsis yog tib neeg primate (NHP) AtD qauv sivtsev plua plav mite (HDM) allergen sensitization ua ke nrog Staphylococcal enterotoxin B (SEB) daim tawv nqaij daim ntawv thov. Cov qauv no ua tib zoo ua raws li txoj kev tiv thaiv kab mob ntawm tib neeg AtD, tshwj xeeb tshaj yog kev sib cuam tshuam ntawm ib puag ncig allergens, microbial superantigens, thiab impaired epidermal integrity.
Qauv Txheej txheem cej luam
HDM+SEB-induced AtD qauv yog tsim nyob rau hauvnaive cynomolgus liab, ib hom uas qhia txog daim tawv nqaij tiv thaiv tus yam ntxwv zoo heev piv rau tib neeg. Model integrates:
- HDM (Dermatophagoides pteronyssinus)raws li thawj ib puag ncig allergen nquag txuam nrog tib neeg AtD;
- SEB, muab los ntawm tus neeg txhawb nqa, ua haujlwm raws li lub zog superantigen muaj peev xwm nthuav tawm T- cell activation thiab robust daim tawv nqaij.
Los ntawm kev sib koom ua ke ntawm kev ua xua thiab SEB-tsav inflammatory amplification, tus qauv no ncaj ncees rov tsim dua "allergen → daim tawv nqaij barrier dysfunction → microbial superantigen" kab mob cascade pom hauv cov neeg mob AtD.
Cov Qauv Tseem Ceeb
Tsiaj Tsiaj
Cynomolgus Monkeys (Macaca fascicularis)
Tsiaj tsiaj, kom ntseeg tau lub cev tsis muaj zog thiab tsis muaj kev cuam tshuam keeb kwm yav dhau los tsim nyog rau cov lus teb Th2-kev tsis sib haum xeeb.
Sensitization thiab Challenge Agents
- HDM rho tawm: Induces allergen- tshwj xeeb Th2 kev tiv thaiv kab mob.
- SEB superantigen: Txhawb nqa tsis yog - tshwj xeeb T cell ua kom sai thiab ua kom qhov mob hauv zos, simulatingStaphylococcus aureuscolonization muaj nyob rau hauv tib neeg AtD.
Txoj kev tswj hwm: Rov ua duadaim tawv nqaij daim ntawv thovHDM and SEB.
Kawm txog kev ua haujlwm thiab ncua sij hawm
Txoj kev tshawb fawb tiav yog kwv yees li14-16 hnub, suav nrog kev npaj, tshuaj ntsuam xyuas, qauv induction, thiab cov theem kev kho mob.
1. Lub Sijhawm Npaj (7–8 lub lis piam)
Kev cog lus ua tiav thiab pib qhov project
Kev yuav tsiaj txhu thiab cov ntaub ntawv kawm
2. Kev tshuaj ntsuam xyuas thiab kev lees paub (2-3 lub lis piam)
Kev ntsuam xyuas kev noj qab haus huv thiab kev qhia tus cwj pwm
Tsiaj txhu randomization thiab kho tawv nqaij
3. Kab mob Induction thiab Dosing Phase (5 lub lis piam; Lub lis piam 1–5)
Lub AtD phenotype yog tsim los ntawmrov ua dua HDM + SEB daim tawv nqaij daim ntaub ntawv:
Thawj qhov kev xav/kev sib tw (Lub Limtiam 1):
Daim ntawv thov Topical HDM+SEB Hnub 1–4
Qhov thib ob thiab thib peb (Lub Limtiam 2–5):
Lwm lub voj voog ntawm HDM + SEB raug raws li lub sijhawm teem tseg
Cov kev sib tw rov qab no ua rau:
- Erythema, dryness, thiab lichenification
- Kev nce qib Th2 cytokines (piv txwv li, IL-4, IL-5, IL-13)
- Nce qib IgE
- Epidermal barrier impairment
- Exacerbated o uas tau tsav los ntawm SEB- txhim kho lub cev tiv thaiv kab mob
Qhov profile no tsom rau kev kho mob cuam tshuam txog AtD kev loj hlob thiab muab lub platform muaj zog rau kev soj ntsuam cov txiaj ntsig kho mob.
Qauv nta thiab qhov zoo
Clinically ntsig txog kev tiv thaiv kab mob kos npe: Strong Th2 polarization, IgE elevation, thiab SEB-enhanced inflammatory response.
Reproducible daim tawv nqaij lesions: Ib txwm erythema, excoriation, thiab epidermal thickening haum rau kev soj ntsuam ntev.
Yooj yim sampling: Ntshav, daim tawv nqaij biopsy, thiab imaging -raws li kev ntsuam xyuas (yog xav tau) tuaj yeem muab tso ua ke.
Haum rau biologics thiab tshuaj pleev ib ce: NHP tiv thaiv kab mob thiab daim tawv nqaij physiology tso cai rau siab translational ntsig txog.
Yam Qauv: OVA-Induced Atopic Dermatitis hauv Cynomolgus Monkeys
Ntxiv rau HDM + SEB qauv, Prisys Biotechnologies kuj muab ib qhoOVA-induced AtD qauv, tsim los ntawm qhov systemic ovalbumin rhiab heev ua raws li kev sib tw ntawm daim tawv nqaij hauv zos. Txoj kev no ua ntej primes asystemic Th2-dominant tebthiab ces ua rausite-kev mob tshwj xeeb, muab lwm txoj hauv kev los kawm txog kev ua xua - tsav dermatitis.
Cov lus qhia ntxaws ntxaws yuav raug txuas sib cais.
Xaus
CovHDM+SEB-induced AtD modeltsim los ntawm Prisys Biotechnologies muaj kev tshawb fawb nruj, muaj feem cuam tshuam rau kev kho mobNHP platform rau kev ntsuam xyuas ua ntejntawm kev tiv thaiv - mob thiab immunomodulatory kho. Cov qauv no muaj txiaj ntsig tshwj xeeb rau cov kev pab cuam tsom rau Th2 cytokines, IgE txoj hauv kev, T- cell activation, daim tawv nqaij-txheej txheej, thiab microbial-tsav exacerbation ntawm dermatitis.
Rau cov neeg koom tes nrhiav kom ceev AtD tshuaj txhim kho nrog kev ntseeg siab ntawm kev txhais lus siab, tus qauv no muab lub hauv paus txhim khu kev qha thiab zoo - yam ntxwv.
