Review Article

The Influence of Intervertebral Disc Microenvironment on the Biological Behavior of Engrafted Mesenchymal Stem Cells

Table 4

Effects of pH on the biological behavior of MSCs.

Cell sourcesYearTeamJournalResultsReference

BMSCs2008Wuertz et al.SpineIVD-like acidity (pH 6.8) inhibited BMSC viability, proliferation, and expression of aggrecan and collagen-I.[104]
2009Wuertz et al.Biochem Biophys Res CommunIncreased acidity inhibited BMSC viability, proliferation, and expression of aggrecan and collagen-I.[124]
2016Naqvi and BuckleySpineAcidity with pH below 6.8 inhibited BMSC viability, proliferation, and accumulation of sGAG and collagen.[127]
2019Cai et al.Biosci RepDegenerated IVD-like acidity inhibited BMSC viability and proliferation.[132]
2021Gansau et al.Eur Cell MaterLow pH (pH 6.8 and pH 6.5) inhibited AD-MSC viability and accumulation of sGAG and collagen compared with standard pH (pH 7.4).[133]

AD-MSCs2012Laing et al.J Transl MedIVD-like acidity (pH 6.8) inhibited AD-MSC viability, proliferation, and expression of aggrecan and collagen-I.[105]
2012Li et al.Exp Biol MedAcidic pH inhibited AD-MSC viability, proliferation, and expression of aggrecan, collagen-I and collagen-II.[125]
2014Han et al.Cells Tissues OrgansAcidic pH inhibited AD-MSC and NP-MSC viability, proliferation, and expression of aggrecan, collagen-I, and collagen-II, and NP-MSCs exhibited higher tolerance to acidity than AD-MSCs.[126]

NP-MSCs2017Liu et al.Stem Cells Dev.Acidic pH inhibited NP-MSC viability, proliferation, and ECM synthesis.[40]
2021Ding et al.AgingAcidic pH (pH 6.6) inhibited NP-MSC proliferation and induced their senescence.[134]
2022Wang et al.Front Bioeng BiotechnolAcidic conditions (pH 6.2) inhibited NP-MSC viability, proliferation, and ECM synthesis.[135]

AD-MSCs: adipose-derived mesenchymal stem cells; BMSCs: bone marrow-derived mesenchymal stem cells; ECM: extracellular matrix; IVD: intervertebral disc; NP-MSCs: nucleus pulposus-derived mesenchymal stem cells; sGAG: sulphated glycosaminoglycans.