PMID- 37841863 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240210 DP - 2023 Sep 28 TI - The impact of blood MCP-1 levels on Alzheimer's disease with genetic variation of UNC5C and NAV3 loci. LID - rs.3.rs-3376348 [pii] LID - 10.21203/rs.3.rs-3376348/v1 [doi] AB - BACKGROUND: Previous study shows that monocyte chemoattractant protein-1 (MCP-1), which is implicated in the peripheral proinflammatory cascade and blood-brain barrier (BBB) disruption, modulates the genetic risks of AD in established AD loci. METHODS: In this study, we hypothesized that blood MCP-1 impacts the AD risk of genetic variants beyond known AD loci. We thus performed a genome-wide association study (GWAS) using the logistic regression via generalized estimating equations (GEE) and the Cox proportional-hazards models to examine the interactive effects between single nucleotide polymorphisms (SNPs) and blood MCP-1 level on AD in three cohorts: the Framingham Heart Study (FHS), Alzheimer's Disease Neuroimaging Initiative (ADNI) and Religious Orders Study/Memory and Aging Project (ROSMAP). RESULTS: We identified SNPs in two genes, neuron navigator 3 (NAV3, also named Unc-53 Homolog 3, rs696468) (p < 7.55x10(- 9)) and Unc-5 Netrin Receptor C (UNC5C rs72659964) (p < 1.07x10(- 8)) that showed an association between increasing levels of blood MCP-1 and AD. Elevating blood MCP-1 concentrations increased AD risk and AD pathology in genotypes of NAV3 (rs696468-CC) and UNC5C (rs72659964-AT + TT), but did not influence the other counterpart genotypes of these variants. CONCLUSIONS: NAV3 and UNC5C are homologs and may increase AD risk through dysregulating the functions of neurite outgrowth and guidance. Overall, the association of risk alleles of NAV3 and UNC5C with AD is enhanced by peripheral MCP-1 level, suggesting that lowering the level of blood MCP-1 may reduce the risk of developing AD for people with these genotypes. FAU - Huang, Jinghan AU - Huang J AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Wang, Yixuan AU - Wang Y AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Stein, Thor D AU - Stein TD AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Ang, Ting Fang Alvin AU - Ang TFA AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Zhu, Yibo AU - Zhu Y AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Tao, Qiushan AU - Tao Q AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Lunetta, Kathryn L AU - Lunetta KL AD - Boston University School of Public Health. FAU - Mez, Jesse AU - Mez J AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Au, Rhoda AU - Au R AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Farrer, Lindsay A AU - Farrer LA AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Qiu, Wei Qiao AU - Qiu WQ AD - Boston University Chobanian & Avedisian School of Medicine. FAU - Zhang, Xiaoling AU - Zhang X AD - Boston University Chobanian & Avedisian School of Medicine. LA - eng GR - U01 AG046152/AG/NIA NIH HHS/United States GR - R01 AG017917/AG/NIA NIH HHS/United States GR - RC2 AG036547/AG/NIA NIH HHS/United States GR - R01 AG048015/AG/NIA NIH HHS/United States GR - U01 AG061356/AG/NIA NIH HHS/United States GR - U01 AG032984/AG/NIA NIH HHS/United States GR - R01 AG030146/AG/NIA NIH HHS/United States GR - U01 AG024904/AG/NIA NIH HHS/United States GR - R01 AG036042/AG/NIA NIH HHS/United States GR - P30 AG010161/AG/NIA NIH HHS/United States GR - R01 AG048927/AG/NIA NIH HHS/United States GR - RF1 AG057473/AG/NIA NIH HHS/United States GR - RF1 AG057519/AG/NIA NIH HHS/United States GR - U01 AG046161/AG/NIA NIH HHS/United States GR - U19 AG068753/AG/NIA NIH HHS/United States GR - R01 AG036836/AG/NIA NIH HHS/United States GR - R01 AG015819/AG/NIA NIH HHS/United States PT - Preprint DEP - 20230928 PL - United States TA - Res Sq JT - Research square JID - 101768035 PMC - PMC10571626 OTO - NOTNLM OT - Alzheimer's disease OT - MCP-1 OT - blood OT - genome-wide association study OT - peripheral inflammation COIS- Competing interests The authors declare that they have no competing interests. EDAT- 2023/10/16 06:48 MHDA- 2023/10/16 06:49 PMCR- 2023/10/13 CRDT- 2023/10/16 04:43 PHST- 2023/10/16 06:49 [medline] PHST- 2023/10/16 06:48 [pubmed] PHST- 2023/10/16 04:43 [entrez] PHST- 2023/10/13 00:00 [pmc-release] AID - rs.3.rs-3376348 [pii] AID - 10.21203/rs.3.rs-3376348/v1 [doi] PST - epublish SO - Res Sq [Preprint]. 2023 Sep 28:rs.3.rs-3376348. doi: 10.21203/rs.3.rs-3376348/v1.