The immunosuppressive effects of low molecular weight chitosan on thymopentin-activated mice bearing H22 solid tumors.
Int Immunopharmacol
; 99: 108008, 2021 Oct.
Article
de En
| MEDLINE
| ID: mdl-34330058
ABSTRACT
In the present study, the low molecular weight of chitosan (CS) was prepared and its activity on thymopentin-activated mice bearing H22 solid tumors was further researched. The purity and molecular weight of CS were determined by UV and HPGPC spectra, and its immunosuppressive effects on H22 tumor-bearing mice were evaluated through determination on immune organs, cells and cytokines. Results showed that CS contained little impurities with the average molecular weight of 1.20 × 104 Da. The in vivo antitumor experiments demonstrated that CS facilitated to destroy immune organs (thymuses and spleens), suppress immune cells (lymphocytes, macrophages and NK cells) activities and reduce immune-related cytokines (TNF-α, IFN-γ, IL-2 and IL-4) expressions of H22 tumor-bearing mice even with simultaneous TP5 stimulation. Our data suggested that CS could not be applied to improve immune response in cancer-bearing patients, but might be employed for treatments on autoimmune diseases or organ transplant patients.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Carcinome hépatocellulaire
/
Chitosane
/
Tumeurs du foie
Limites:
Animals
Langue:
En
Journal:
Int Immunopharmacol
Sujet du journal:
ALERGIA E IMUNOLOGIA
/
FARMACOLOGIA
Année:
2021
Type de document:
Article
Pays d'affiliation:
Chine