31 May 2015 : Animal Research
Oral Administration of Lactococcus lactis Expressing Synthetic Genes of Myelin Antigens in Decreasing Experimental Autoimmune Encephalomyelitis in RatsKaja KasarelloABCDE, Barbara Kwiatkowska-PatzerDG, Andrzej W. LipkowskiADG, Jacek K. BardowskiAG, Agnieszka K. SzczepankowskaAEF
Med Sci Monit 2015; 21:1587-1597
BACKGROUND: Multiple sclerosis is a human autoimmunological disease that causes neurodegeneration. One of the potential ways to stop its development is induction of oral tolerance, whose effect lies in decreasing immune response to the fed antigen. It was shown in animal models that administration of specific epitopes of the three main myelin proteins – myelin oligodendrocyte glycoprotein (MOG), myelin basic protein (MBP), and proteolipid protein (PLP) – results in induction of oral tolerance and suppression of disease symptoms. Use of bacterial cells to produce and deliver antigens to gut mucosa seems to be an attractive method for oral tolerance induction in treatment of diseases with autoimmune background.
MATERIAL AND METHODS: Synthetic genes of MOG35-55, MBP85-97, and PLP139-151 myelin epitopes were generated and cloned in Lactococcus lactis under a CcpA-regulated promoter. The tolerogenic effect of bacterial preparations was tested on experimental autoimmune encephalomyelitis, which is the animal model of MS. EAE was induced in rats by intradermal injection of guinea pig spinal cord homogenate into hind paws.
RESULTS: Rats were administered preparations containing whole-cell lysates of L. lactis producing myelin antigens using different feeding schemes. Our study demonstrates that 20-fold, but not 4-fold, intragastric administration of autoantigen-expressing L. lactis cells under specific conditions reduces the clinical symptoms of EAE in rats.
CONCLUSIONS: The present study evaluated the use of myelin antigens produced in L. lactis in inhibiting the onset of experimental autoimmune encephalomyelitis in rats. Obtained results indicate that application of such recombinant cells can be an attractive method of oral tolerance induction.
Keywords: Animals, Administration, Oral, Base Sequence, Cloning, Molecular, Encephalomyelitis, Autoimmune, Experimental - immunology, Immune Tolerance - immunology, Lactococcus lactis - metabolism, Molecular Sequence Data, Myelin Basic Protein - pharmacology, Myelin Proteolipid Protein - pharmacology, Myelin-Oligodendrocyte Glycoprotein - pharmacology, Oligonucleotides - genetics, Peptide Fragments - pharmacology, Rats, Sequence Analysis, DNA
This Week Editorial
20 September 2021 : EditorialEditorial: Autoantibodies to Components of the Immune System, Including Type 1 Interferons, and the Risk of Severe COVID-19
Med Sci Monit 2021; 27:e934766
08 September 2021 : Clinical ResearchAcceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...
Med Sci Monit In Press; DOI: 10.12659/MSM.932788
16 July 2021 : Review articleSilent Hypoxemia in Patients with COVID-19 Pneumonia: A Review
Med Sci Monit In Press; DOI: 10.12659/MSM.930776
09 July 2021 : Database AnalysisA Simple Clinical Prediction Tool for COVID-19 in Primary Care with Epidemiology: Temperature-Leukocytes-CT...
Med Sci Monit In Press; DOI: 10.12659/MSM.931467
20 Sep 2021 : Clinical ResearchAutomated Boluses and Delayed-Start Timers Prolong Perineural Local Anesthetic Infusions and Analgesia Foll...
Med Sci Monit In Press; DOI: 10.12659/MSM.933190
16 Sep 2021 : Clinical ResearchA Retrospective Evaluation of Operative and Postoperative Outcomes in Patients with Spinal Metastases from ...
Med Sci Monit In Press; DOI: 10.12659/MSM.932995
15 Sep 2021 : Clinical ResearchPolish Medical Air Rescue Interventions Concerning Pregnant Women in Poland: A 10-year Retrospective Analysis
Med Sci Monit In Press; DOI: 10.12659/MSM.933029
20 Mar 2020 : Clinical ResearchSocial Capital and Sleep Quality in Individuals Who Self-Isolated for 14 Days During the Coronavirus Diseas...
Med Sci Monit 2020; 26:e923921
15 Apr 2020 : Clinical ResearchPsychological Impact and Coping Strategies of Frontline Medical Staff in Hunan Between January and March 20...
Med Sci Monit 2020; 26:e924171
05 May 2020 : Review articleAn Evidence Based Perspective on mRNA-SARS-CoV-2 Vaccine Development
Med Sci Monit 2020; 26:e924700