The short non-coding microRNAs (miRNAs), have emerged as reliable modulators of various pathological conditions including autoimmune diseases in mammals. The current study, aims to identify new potential differential expressed miRNAs and their downstream mRNA targets of the autoimmune disease, Multiple sclerosis (MS). First, we used a computational tool to identify a new set of miRNA(s) that are probably implicated in MS. Preliminary, computational screening reveals that miR-659-3p, miR-659-5p, miR- 684, miR-3607-3p, miR-3607-5p, miR-3682-3p, miR-3682-5p miR-4647, miR-7188-3p, miR-7188-5p and miR-7235 are specifically elevated in the secondary lymphoid cells of EAE mice. In addition, expression of the downstream target genes of these miRNAs such as FXBO33, SGMS-1, ZDHHC-9, GABRA-3, NRXN-2 were reciprocal to miRNA expression in lymphoid cells. These confirmed by applying the mimic and silencing miRNA models, these data suggesting new inflammatory target genes of these promising miRNA biomarkers. The in vivo adoptive transfer model revealed that the suppression of miRNA-7188-5p and miR-7235 changed the pattern of astrocytes and CNSpathophysiology. The current study identified set of miRNAs and their mRNA targets as reciprocal regulator in MS disease. The absence of miRNA-7188-5p and miR-7235 enhanced the disease alleviation. These optimized results highlight new set of miRNA’s based biomarkers with therapeutic potential in experimental MS.
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The full text of this article is available to read as a PDF.
This is a list of supplementary files associated with this preprint. Click to download.
Supplementary S1. EAE induction and pathological validation. The evaluation of different miRNAs in isolated splenocytes using quantitative real time PCR and normalized by U6 controls. (A) EAE clinical score (B) Incidence of disease assessed for 24 days after immunization of EAE mice, n=8 mice. (C) miRNA profile was estimated in splenocytes of EAE mice after 24 days MOG immunization. (D, E). Histopathology of cervical spinal cord using hematoxylin and eosin staining at 200X magnification power. (F, G) Validation of demyelination in EAE mice using laxol fast blue staining and demyelination was quantified. Statistical data revealed the microscopic score of histochemical slides showed damage glial cells and astrocytes as well as lateral modification observed in the slides.
Supplementary S2. Sequence match of miRNA and targeted 3’ UTR regions. The mature miRNA of miR-7188-3p and miR-7188-5p were binding match of 3’ UTR of MAPK-6 and GABRA-3 gene targets respectively. The miR-7235 showed binding match on 3’ UTR of NRXN-2 gene targets. miR-4647 showed binding match on 3’ UTR of FBXO-33. miR-684 showed binding matched sequence of 3’ UTR of SGMS-1 gene targets.
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Posted 29 Jan, 2021
Posted 29 Jan, 2021
The short non-coding microRNAs (miRNAs), have emerged as reliable modulators of various pathological conditions including autoimmune diseases in mammals. The current study, aims to identify new potential differential expressed miRNAs and their downstream mRNA targets of the autoimmune disease, Multiple sclerosis (MS). First, we used a computational tool to identify a new set of miRNA(s) that are probably implicated in MS. Preliminary, computational screening reveals that miR-659-3p, miR-659-5p, miR- 684, miR-3607-3p, miR-3607-5p, miR-3682-3p, miR-3682-5p miR-4647, miR-7188-3p, miR-7188-5p and miR-7235 are specifically elevated in the secondary lymphoid cells of EAE mice. In addition, expression of the downstream target genes of these miRNAs such as FXBO33, SGMS-1, ZDHHC-9, GABRA-3, NRXN-2 were reciprocal to miRNA expression in lymphoid cells. These confirmed by applying the mimic and silencing miRNA models, these data suggesting new inflammatory target genes of these promising miRNA biomarkers. The in vivo adoptive transfer model revealed that the suppression of miRNA-7188-5p and miR-7235 changed the pattern of astrocytes and CNSpathophysiology. The current study identified set of miRNAs and their mRNA targets as reciprocal regulator in MS disease. The absence of miRNA-7188-5p and miR-7235 enhanced the disease alleviation. These optimized results highlight new set of miRNA’s based biomarkers with therapeutic potential in experimental MS.
Figure 1
Figure 2
Figure 3
Figure 4

Figure 5

Figure 6
The full text of this article is available to read as a PDF.
This is a list of supplementary files associated with this preprint. Click to download.
Supplementary S1. EAE induction and pathological validation. The evaluation of different miRNAs in isolated splenocytes using quantitative real time PCR and normalized by U6 controls. (A) EAE clinical score (B) Incidence of disease assessed for 24 days after immunization of EAE mice, n=8 mice. (C) miRNA profile was estimated in splenocytes of EAE mice after 24 days MOG immunization. (D, E). Histopathology of cervical spinal cord using hematoxylin and eosin staining at 200X magnification power. (F, G) Validation of demyelination in EAE mice using laxol fast blue staining and demyelination was quantified. Statistical data revealed the microscopic score of histochemical slides showed damage glial cells and astrocytes as well as lateral modification observed in the slides.
Supplementary S2. Sequence match of miRNA and targeted 3’ UTR regions. The mature miRNA of miR-7188-3p and miR-7188-5p were binding match of 3’ UTR of MAPK-6 and GABRA-3 gene targets respectively. The miR-7235 showed binding match on 3’ UTR of NRXN-2 gene targets. miR-4647 showed binding match on 3’ UTR of FBXO-33. miR-684 showed binding matched sequence of 3’ UTR of SGMS-1 gene targets.
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