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Combined therapy of adenovirus vector mediated IGF-1 gene with anti-CD20 mAbs exerts potential beneficial role on type 1 diabetes in nonobese diabetic mice.
Life Sciences 2021 July 29
AIMS: To assess the protective effects of combined treatment with anti-CD20 monoclonal antibody (mAb) and adenovirus mediated mouse insulin-like growth factor 1 (Adv-mIGF-1) gene on type 1 diabetes (T1D) in nonobese diabetic (NOD) mice at early stage.
METHODS: To simultaneously restore the proportion of Th cells and block the interaction of B cells, NOD model mice were assigned to four groups which received PBS, Adv-mIGF-1 gene and anti-CD20 mAbs alone or combination, respectively. After 16 weeks of therapeutic intervention, blood samples and pancreatic tissues of mice were measured via the methods of ELISA, RT-PCR, western blotting, H&E staining, TUNEL and immunohistochemistry assays.
KEY FINDINGS: Chronic combination intervention with Adv-mIGF-1 gene and anti-CD20 mAbs reduced the T1D-related morbidity, promoted the secretion of insulin, controlled the blood glucose levels (BGLs) and alleviated insulitis of experimental mice. In addition, current combination intervention also protected the pancreatic β cells via suppressing the expression of Fas and TNF-α, inhibiting Caspase-3/8 related apoptotic pathway, and activating the Bcl-2-related antiapoptotic pathway. Furthermore, current combination therapy also increased the expression levels of PDX-1 and CK-19 genes, and finally accelerated the proliferation and differentiation of pancreatic β-cells. In addition, combination therapy could also ameliorate the pathological characteristics of diabetic nephropathy in NOD mice.
CONCLUSION: Combination treatment with Adv-mIGF-1 gene and anti-CD20 mAbs may exert a potential beneficial role on T1D in NOD mice.
METHODS: To simultaneously restore the proportion of Th cells and block the interaction of B cells, NOD model mice were assigned to four groups which received PBS, Adv-mIGF-1 gene and anti-CD20 mAbs alone or combination, respectively. After 16 weeks of therapeutic intervention, blood samples and pancreatic tissues of mice were measured via the methods of ELISA, RT-PCR, western blotting, H&E staining, TUNEL and immunohistochemistry assays.
KEY FINDINGS: Chronic combination intervention with Adv-mIGF-1 gene and anti-CD20 mAbs reduced the T1D-related morbidity, promoted the secretion of insulin, controlled the blood glucose levels (BGLs) and alleviated insulitis of experimental mice. In addition, current combination intervention also protected the pancreatic β cells via suppressing the expression of Fas and TNF-α, inhibiting Caspase-3/8 related apoptotic pathway, and activating the Bcl-2-related antiapoptotic pathway. Furthermore, current combination therapy also increased the expression levels of PDX-1 and CK-19 genes, and finally accelerated the proliferation and differentiation of pancreatic β-cells. In addition, combination therapy could also ameliorate the pathological characteristics of diabetic nephropathy in NOD mice.
CONCLUSION: Combination treatment with Adv-mIGF-1 gene and anti-CD20 mAbs may exert a potential beneficial role on T1D in NOD mice.
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