Nucleus pulposus tissues harvested from 55 subjects (34 cases and 21 controls) were lysed in
TRIzol (Invitrogen Inc, Carlsbad, CA, USA) and total RNA was extracted using an
RNeasy Mini Kit (Qiagen, Valencia, CA, USA) according to the manufacturer’s protocol. The reverse transcriptions (RT) were performed using
PrimeScript RT Master Mix kit (Takara, Japan), with 1 μg total RNA used for the synthesis of the complementary DNA (cDNA) via using
iScripts cDNA Synthesis kit (Quanta Biosciences, MD, USA).
SYBR Green real-time PCR kit (Quanta Biosciences, MD, USA) was used to measure the relative mRNA levels, and samples normalized for GAPDH expression. All reactions were run on a
real-time PCR system (Applied Biosystems) and analyzed using the comparative Ct (ΔΔCt) method (2
-ΔΔCt with logarithm transformation). For profiling gene expressions, qRT-PCR was performed, using the primer pairs for IL-1
α (5’-CCTCACCTTCCAGGAGAATGTG- 3’ and 5’-GCATCGCCCAGATTTTGTAG TG-3’), IL-1
β (5’-CTGTCCTGCGTGTT GAAAGAT-3’ and 5’-TTCTGCTTGAGAG GTGCTGAT-3’), IL-1RN (5’-TTGTCCT GCTTTCTGTTCTCG-3’ and 5’-CTGTCC TGTGTCAAGTCTGG-3’), and GAPDH (5’-GACATGCCGCCTGGAGAAAC-3’ and 5’-AGCCCAGGATGCCCTTTAGT-3’).
Yang K., Xiao Q., Zhang R., Meng D., Wang J., Wei Q, & Jiang H. (2022). Gene locus polymorphisms and expression levels of interleukin-1 in lumbar disc disease: A MOOSE-compliant meta-analysis and immunohistochemical study. Medicine, 101(43), e31152.