Unknown

Dataset Information

0

Oral TNF-? gene silencing using a polymeric microsphere-based delivery system for the treatment of inflammatory bowel disease.


ABSTRACT: The purpose of this study was to evaluate down-regulation of tumor necrosis factor (TNF)-? by oral RNA interference therapy. Control (scrambled sequence) or TNF-? specific small interfering RNA (siRNA) was encapsulated in type B gelatin nanoparticles and further entrapped in poly(epsilon-caprolactone) (PCL) microspheres to form a nanoparticles-in-microsphere oral system (NiMOS). Upon confirmation of the dextran sulfate sodium (DSS)-induced acute colitis model, mice were divided into several treatment groups receiving no treatment, blank NiMOS, NiMOS with scramble siRNA, or NiMOS with TNF-? silencing siRNA by oral administration. Successful gene silencing led to decreased colonic levels of TNF-?, suppressed expression of other pro-inflammatory cytokines (e.g., interleukin (IL)-1?, interferon (IFN)-?) and chemokines (MCP-1), an increase in body weight, and reduced tissue myeloperoxidase activity. Results of this study established the clinical potential of a NiMOS-based oral TNF-? gene silencing system for the treatment of inflammatory bowel disease as demonstrated in an acute colitis model.

SUBMITTER: Kriegel C 

PROVIDER: S-EPMC3033993 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature

altmetric image

Publications

Oral TNF-α gene silencing using a polymeric microsphere-based delivery system for the treatment of inflammatory bowel disease.

Kriegel Christina C   Amiji Mansoor M  

Journal of controlled release : official journal of the Controlled Release Society 20101017 1


The purpose of this study was to evaluate down-regulation of tumor necrosis factor (TNF)-α by oral RNA interference therapy. Control (scrambled sequence) or TNF-α specific small interfering RNA (siRNA) was encapsulated in type B gelatin nanoparticles and further entrapped in poly(epsilon-caprolactone) (PCL) microspheres to form a nanoparticles-in-microsphere oral system (NiMOS). Upon confirmation of the dextran sulfate sodium (DSS)-induced acute colitis model, mice were divided into several trea  ...[more]

Similar Datasets

| S-EPMC3365667 | biostudies-literature
| S-EPMC10784143 | biostudies-literature
| S-EPMC7482796 | biostudies-literature
| S-EPMC10436423 | biostudies-literature
| S-EPMC9198027 | biostudies-literature
| S-EPMC10288274 | biostudies-literature
| S-EPMC3894572 | biostudies-literature
| S-EPMC4735066 | biostudies-literature
| S-EPMC5113857 | biostudies-literature
| S-EPMC10963395 | biostudies-literature