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Main LR, Song YE, Lynn A, Laux RA, Miskimen KL, Osterman MD, Cuccaro ML, Ogrocki PK, Lerner AJ, Vance JM, Fuzzell MD, Fuzzell SL, Hochstetler SD, Dorfsman DA, Caywood LJ, Prough MB, Adams LD, Clouse JE, Herington SD, Scott WK, Pericak-Vance MA, Haines JL. Genetic analysis of cognitive preservation in the midwestern Amish reveals a novel locus on chromosome 2. medRxiv 2023:2023.12.13.23299932. [PMID: 38168325 PMCID: PMC10760262 DOI: 10.1101/2023.12.13.23299932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
INTRODUCTION Alzheimer disease (AD) remains a debilitating condition with limited treatments and additional therapeutic targets needed. Identifying AD protective genetic loci may identify new targets and accelerate identification of therapeutic treatments. We examined a founder population to identify loci associated with cognitive preservation into advanced age. METHODS Genome-wide association and linkage analyses were performed on 946 examined and sampled Amish individuals, aged 76-95, who were either cognitively unimpaired (CU) or impaired (CI). RESULTS 12 SNPs demonstrated suggestive association (P≤5×10-4) with cognitive preservation. Genetic linkage analyses identified >100 significant (LOD≥3.3) SNPs, some which overlapped with the association results. Only one locus on chromosome 2 retained significance across multiple analyses. DISCUSSION A novel significant result for cognitive preservation on chromosome 2 includes the genes LRRTM4 and CTNNA2. Additionally, the lead SNP, rs1402906, impacts the POU3F2 transcription factor binding affinity, which regulates LRRTM4 and CTNNA2.
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Affiliation(s)
- Leighanne R Main
- Departments of Genetics and Genome Sciences, Case Western Reserve University, 10900 Euclid Ave, Cleveland, OH, USA, 44106
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
- Cleveland Institute of Computational Biology, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44106
| | - Yeunjoo E Song
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
- Cleveland Institute of Computational Biology, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44106
| | - Audrey Lynn
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
- Cleveland Institute of Computational Biology, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44106
| | - Renee A Laux
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
| | - Kristy L Miskimen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
| | - Michael D Osterman
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
| | - Michael L Cuccaro
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Paula K Ogrocki
- Department of Neurology, University Hospitals Cleveland Medical Center, 11100 Euclid Ave, Cleveland, OH, USA, 44106
- Department of Neurology, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44106
| | - Alan J Lerner
- Department of Neurology, University Hospitals Cleveland Medical Center, 11100 Euclid Ave, Cleveland, OH, USA, 44106
- Department of Neurology, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44106
| | - Jeffery M Vance
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - M Denise Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
| | - Sarada L Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
| | - Sherri D Hochstetler
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
| | - Daniel A Dorfsman
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Laura J Caywood
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Michael B Prough
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Larry D Adams
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Jason E Clouse
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Sharlene D Herington
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - William K Scott
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Margaret A Pericak-Vance
- John P Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, 1501 NW 10th Ave, Miami, FL, USA, 33136
| | - Jonathan L Haines
- Departments of Genetics and Genome Sciences, Case Western Reserve University, 10900 Euclid Ave, Cleveland, OH, USA, 44106
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44016
- Cleveland Institute of Computational Biology, Case Western Reserve University School of Medicine, 10900 Euclid Ave, Cleveland, OH, USA, 44106
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Ramos J, Caywood LJ, Prough MB, Clouse JE, Herington SD, Slifer SH, Fuzzell MD, Fuzzell SL, Hochstetler SD, Miskimen KL, Main LR, Osterman MD, Zaman AF, Whitehead PL, Adams LD, Laux RA, Song YE, Foroud TM, Mayeux RP, George-Hyslop PS, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Haines JL, Pericak-Vance MA, Scott WK. Genetic variants in the SHISA6 gene are associated with delayed cognitive impairment in two family datasets. Alzheimers Dement 2023; 19:611-620. [PMID: 35490390 PMCID: PMC9622429 DOI: 10.1002/alz.12686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 03/08/2022] [Accepted: 03/28/2022] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Studies of cognitive impairment (CI) in Amish communities have identified sibships containing CI and cognitively unimpaired (CU) individuals. We hypothesize that CU individuals may carry protective alleles delaying age at onset (AAO) of CI. METHODS A total of 1522 individuals screened for CI were genotyped. The outcome studied was AAO for CI individuals or age at last normal exam for CU individuals. Cox mixed-effects models examined association between age and single nucleotide variants (SNVs). RESULTS Three SNVs were significantly associated (P < 5 × 10-8 ) with AAO on chromosomes 6 (rs14538074; hazard ratio [HR] = 3.35), 9 (rs534551495; HR = 2.82), and 17 (rs146729640; HR = 6.38). The chromosome 17 association was replicated in the independent National Institute on Aging Genetics Initiative for Late-Onset Alzheimer's Disease dataset. DISCUSSION The replicated genome-wide significant association with AAO on chromosome 17 is located in the SHISA6 gene, which is involved in post-synaptic transmission in the hippocampus and is a biologically plausible candidate gene for Alzheimer's disease.
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Affiliation(s)
- Jairo Ramos
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Michael B. Prough
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Susan H. Slifer
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - M. Denise Fuzzell
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Sarada L. Fuzzell
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | | | | | - Leighanne R. Main
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Michael D. Osterman
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
- Cleveland Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, USA
| | - Andrew F. Zaman
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Patrice L. Whitehead
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Renee A. Laux
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Yeunjoo E. Song
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Tatiana M. Foroud
- Indiana Alzheimer’s Disease Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Richard P. Mayeux
- Taub Institute on Alzheimer’s Disease and the Aging Brain, Department of Neurology, Columbia University, New York, NY, USA
- Gertrude H. Sergievsky Center, Columbia University, New York, NY, USA
- Department of Neurology, Columbia University, New York, NY, USA
| | | | - Paula K. Ogrocki
- University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Alan J. Lerner
- University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
- The Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
- The Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jonathan L. Haines
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
- Cleveland Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, USA
| | - Margaret A. Pericak-Vance
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
- The Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - William K. Scott
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
- The Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
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Main LR, Song YE, Laux RA, Miskimen KL, Cuccaro ML, Ogrocki PK, Lerner AJ, Vance JM, Fuzzell MD, Fuzzell SL, Hochstetler SD, Osterman MD, Lynn A, Dorfsman DA, Caywood LJ, Prough MB, Adams LD, Clouse JE, Herington SD, Scott WK, Pericak‐Vance MA, Haines JL. Detecting genetic loci for preservation of cognition in the Midwestern United States Amish. Alzheimers Dement 2022. [DOI: 10.1002/alz.061554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Leighanne R. Main
- Department of Genetics and Genome Sciences, Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Yeunjoo E. Song
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Renee A. Laux
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Paula K. Ogrocki
- Brain Health and Memory Center, University Hospital Cleveland OH USA
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Alan J. Lerner
- Brain Health and Memory Center, University Hospital Cleveland OH USA
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics, University of Miami Miami FL USA
| | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Sherri D. Hochstetler
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Michael D. Osterman
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Audrey Lynn
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Daniel A. Dorfsman
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Michael B. Prough
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - William K. Scott
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami Miami FL USA
| | - Margaret A. Pericak‐Vance
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami Miami FL USA
| | - Jonathan L. Haines
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
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4
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Osterman MD, Song YE, Wheeler NR, Laux RA, Adams LD, Caywood LJ, Prough MB, Clouse JE, Herington SD, Slifer SH, Lynn A, Bartlett J, Fuzzell MD, Fuzzell SL, Hochstetler SD, Miskimen KL, Main LR, Dorfsman DA, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Bush WS, Scott WK, Pericak‐Vance MA, Haines JL. Assessing a Network‐Specific Polygenic Risk Score for Alzheimer’s Disease in the Midwestern Amish and Across Diverse Ancestries. Alzheimers Dement 2022. [DOI: 10.1002/alz.067210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Michael D. Osterman
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Yeunjoo E. Song
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | | | - Renee A. Laux
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Larry D. Adams
- University of Miami Miller School of Medicine Miami FL USA
| | | | | | | | | | | | - Audrey Lynn
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | | | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | | | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Leighanne R. Main
- Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | | | - Paula K. Ogrocki
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Alan J. Lerner
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | | | | | - William S. Bush
- Case Western Reserve University School of Medicine Cleveland OH USA
| | | | | | - Jonathan L. Haines
- Case Western Reserve University School of Medicine, Department of Population & Quantitative Health Sciences, Cleveland Institute for Computational Biology Cleveland OH USA
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5
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Dorfsman DA, Prough MB, Caywood LJ, Clouse JE, Herington SD, Slifer SH, Adams LD, Laux RA, Song YE, Lynn A, Fuzzell MD, Fuzzell SL, Hochstetler SD, Miskimen KL, Main LR, Osterman MD, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Haines JL, Pericak‐Vance MA, Scott WK. Association of mitochondrial haplogroups and cognitive impairment in the Amish. Alzheimers Dement 2022. [DOI: 10.1002/alz.067658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Daniel A. Dorfsman
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Michael B. Prough
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Susan H. Slifer
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Renee A. Laux
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Yeunjoo E. Song
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Audrey Lynn
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Sherri D. Hochstetler
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Leighanne R. Main
- Department of Genetics and Genome Sciences, Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Michael D. Osterman
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Paula K. Ogrocki
- University Hospitals Cleveland Medical Center Cleveland OH USA
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Alan J. Lerner
- University Hospitals Cleveland Medical Center Cleveland OH USA
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Jeffery M. Vance
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami Miami FL USA
| | - Michael L. Cuccaro
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Jonathan L. Haines
- Cleveland Institute for Computational Biology, Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | - Margaret A. Pericak‐Vance
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - William K. Scott
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
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6
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Prough MB, Caywood LJ, Clouse JE, Herington SD, Slifer SH, Dorfsman DA, Adams LD, Laux RA, Song YE, Lynn A, Fuzzell MD, Fuzzell SL, Miller SD, Miskimen KL, Main LR, Osterman MD, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Haines JL, Scott WK, Pericak‐Vance MA. Plasma pTau181 is associated with impaired cognition in the Old Order Amish and adds additional information beyond the known genetic risk factors for AD. Alzheimers Dement 2022. [DOI: 10.1002/alz.067752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Michael B. Prough
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Susan H. Slifer
- University of Miami, Miller School of Medicine, John P. Hussman Institute for Human Genomics Miami FL USA
| | - Daniel A. Dorfsman
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Renee A. Laux
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Yeunjoo E. Song
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Audrey Lynn
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Sherri D. Miller
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
| | - Leighanne R. Main
- Department of Genetics and Genome Sciences, Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Michael D. Osterman
- Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Paula K. Ogrocki
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Alan J. Lerner
- Department of Neurology, Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics, University of Miami Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
| | - Jonathan L. Haines
- Cleveland Institute for Computational Biology, Department of Population and Quantitative Health Sciences, Case Western Reserve University Cleveland OH USA
- Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine Cleveland OH USA
| | - William K. Scott
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
| | - Margaret A. Pericak‐Vance
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami Miami FL USA
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7
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Scott WK, Ramos J, Slifer SH, Caywood LJ, Prough MB, Clouse JE, Dorfsman DA, Herington SD, Fuzzell MD, Fuzzell SL, Sewell JL, Miller SD, Osterman MD, Main LR, Miskimen KL, Lynn A, Whitehead PL, Adams LD, Laux RA, Song YE, Foroud TM, Mayeux R, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Haines JL, Pericak‐Vance MA. Association of a locus on chromosome 17 with earlier age at onset of cognitive impairment in a familial Amish dataset. Alzheimers Dement 2021. [DOI: 10.1002/alz.056288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- William K. Scott
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
| | - Jairo Ramos
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Susan H. Slifer
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Michael B. Prough
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Daniel A. Dorfsman
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Jane L. Sewell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Sherri D. Miller
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Michael D. Osterman
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Leighanne R Main
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Audrey Lynn
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Patrice L. Whitehead
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Renee A. Laux
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Yeunjoo E. Song
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology Case Western Reserve University Cleveland OH USA
| | | | - Richard Mayeux
- The Taub Institute for Research on Alzheimer’s Disease and The Aging Brain Columbia University New York NY USA
| | - Paula K. Ogrocki
- Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Alan J. Lerner
- Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
| | - Jonathan L. Haines
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology Case Western Reserve University Cleveland OH USA
| | - Margaret A. Pericak‐Vance
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
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8
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Prough MB, Caywood LJ, Clouse JE, Herington SD, Slifer SH, Dorfsman DA, Adams LD, Laux RA, Song YE, Lynn A, Fuzzell MD, Fuzzell SL, Sewell JL, Miller SD, Miskimen KL, Main LR, Osterman MD, Ogrocki PK, Lerner AJ, Ramos J, Vance JM, Cuccaro ML, Haines JL, Scott WK, Pericak‐Vance MA. Preferential preservation of constructional praxis delayed recall compared to word list delayed recall in the Amish. Alzheimers Dement 2021. [DOI: 10.1002/alz.056386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael B. Prough
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Susan H. Slifer
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Daniel A. Dorfsman
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Renee A. Laux
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Yeunjoo E. Song
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology Case Western Reserve University Cleveland OH USA
| | - Audrey Lynn
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Jane L. Sewell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Sherri D. Miller
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Leighanne R Main
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Michael D. Osterman
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Paula K. Ogrocki
- Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Alan J. Lerner
- Case Western Reserve University School of Medicine Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Jairo Ramos
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
| | - Jonathan L. Haines
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
- Cleveland Institute for Computational Biology Case Western Reserve University Cleveland OH USA
| | - William K. Scott
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
| | - Margaret A. Pericak‐Vance
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
- Dr. John T. Macdonald Foundation Department of Human Genetics University of Miami Miller School of Medicine Miami FL USA
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9
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Main LR, Song YE, Laux RA, Miskimen KL, Cuccaro ML, Ogrocki PK, Lerner AJ, Vance JM, Fuzzell MD, Fuzzell SL, Sewell JL, Caywood LJ, Prough MB, Adams LD, Clouse JE, Herington SD, Scott WK, Pericak‐Vance MA, Haines JL. Genome‐wide association for protective variants in Alzheimer’s disease in the Midwestern Amish. Alzheimers Dement 2021. [DOI: 10.1002/alz.056363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Leighanne R Main
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Yeunjoo E. Song
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Renee A. Laux
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Kristy L. Miskimen
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | | | - Alan J. Lerner
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
- University Hospitals Cleveland Medical Center Cleveland OH USA
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - M. Denise Fuzzell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Sarada L. Fuzzell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Jane L. Sewell
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
| | - Laura J. Caywood
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Michael B. Prough
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Jason E. Clouse
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Sharlene D. Herington
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - William K. Scott
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Margaret A. Pericak‐Vance
- John P. Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami FL USA
| | - Jonathan L. Haines
- Department of Population and Quantitative Health Sciences Case Western Reserve University Cleveland OH USA
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10
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Parameswaran N, Bartel CA, Hernandez-Sanchez W, Miskimen KL, Smigiel JM, Khalil AM, Jackson MW. A FAM83A Positive Feed-back Loop Drives Survival and Tumorigenicity of Pancreatic Ductal Adenocarcinomas. Sci Rep 2019; 9:13396. [PMID: 31527715 PMCID: PMC6746704 DOI: 10.1038/s41598-019-49475-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 08/23/2019] [Indexed: 12/16/2022] Open
Abstract
Pancreatic ductal adenocarcinomas (PDAC) are deadly on account of the delay in diagnosis and dearth of effective treatment options for advanced disease. The insurmountable hurdle of targeting oncogene KRAS, the most prevalent genetic mutation in PDAC, has delayed the availability of targeted therapy for PDAC patients. An alternate approach is to target other tumour-exclusive effector proteins important in RAS signalling. The Family with Sequence Similarity 83 (FAM83) proteins are oncogenic, tumour-exclusive and function similarly to RAS, by driving the activation of PI3K and MAPK signalling. In this study we show that FAM83A expression is significantly elevated in human and murine pancreatic cancers and is essential for the growth and tumorigenesis of pancreatic cancer cells. Elevated FAM83A expression maintains essential MEK/ERK survival signalling, preventing cell death in pancreatic cancer cells. Moreover, we identified a positive feed-forward loop mediated by the MEK/ERK-activated AP-1 transcription factors, JUNB and FOSB, which is responsible for the elevated expression of oncogenic FAM83A. Our data indicates that targeting the MEK/ERK-FAM83A feed-forward loop opens up additional avenues for clinical therapy that bypass targeting of oncogenic KRAS in aggressive pancreatic cancers.
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Affiliation(s)
- Neetha Parameswaran
- Department of Pathology, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA
| | - Courtney A Bartel
- Department of Pathology, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA
| | - Wilnelly Hernandez-Sanchez
- Department of Pharmacology, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA
| | - Kristy L Miskimen
- Department of Epidemiology and Biostatistics, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA
| | - Jacob M Smigiel
- Department of Pathology, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA
| | - Ahmad M Khalil
- Department of Genetics and Genome Sciences, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA
| | - Mark W Jackson
- Department of Pathology, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA. .,Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Wolstein Research Building, Cleveland, OH, 44106, USA.
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11
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Li G, Miskimen KL, Wang Z, Xie XY, Tse W, Gouilleux F, Moriggl R, Bunting KD. Effective targeting of STAT5-mediated survival in myeloproliferative neoplasms using ABT-737 combined with rapamycin. Leukemia 2010; 24:1397-405. [PMID: 20535152 PMCID: PMC2921023 DOI: 10.1038/leu.2010.131] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Signal transducer and activator of transcription-5 (STAT5) is a critical transcription factor for normal hematopoiesis and its sustained activation is associated with hematologic malignancy. A persistently active mutant of STAT5 (STAT5aS711F) associates with Grb2 associated binding protein 2 (Gab2) in myeloid leukemias and promotes growth in vitro through AKT activation. Here we have retrovirally transduced wild-type or Gab2−/− mouse bone marrow cells expressing STAT5aS711F and transplanted into irradiated recipient mice to test an in vivo myeloproliferative disease (MPD) model. To target Gab2-independent AKT/mTOR activation, wild-type mice were treated separately with rapamycin. In either case, mice lacking Gab2 or treated with rapamycin displayed attenuated myeloid hyperplasia and modestly improved survival, but the effects were not cytotoxic and were reversible. To improve upon this approach, in vitro targeting of STAT5-mediated AKT/mTOR using rapamycin was combined with inhibition of the STAT5 direct target genes bcl-2 and bcl-XL using ABT-737. Striking synergy with both drugs was observed in mouse BaF3 cells expressing STAT5aS711F, TEL-JAK2, or BCR-ABL and in the relatively single agent-resistant human BCR-ABL positive K562 cell line. Therefore, targeting distinct STAT5 mediated survival signals, e.g. bcl-2/bcl-XL and AKT/mTOR may be an effective therapeutic approach for human myeloproliferative neoplasms.
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Affiliation(s)
- G Li
- Division of Hematology-Oncology, Department of Medicine, Case Western Reserve University, Cleveland, OH, USA
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12
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Li G, Wang Z, Miskimen KL, Zhang Y, Tse W, Bunting KD. Gab2 promotes hematopoietic stem cell maintenance and self-renewal synergistically with STAT5. PLoS One 2010; 5:e9152. [PMID: 20161778 PMCID: PMC2818849 DOI: 10.1371/journal.pone.0009152] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Accepted: 01/19/2010] [Indexed: 12/22/2022] Open
Abstract
Background Grb2-associated binding (Gab) adapter proteins play major roles in coordinating signaling downstream of hematopoietic cytokine receptors. In hematopoietic cells, Gab2 can modulate phosphatidylinositol–3 kinase and mitogen associated protein kinase activities and regulate the long-term multilineage competitive repopulating activity of hematopoietic stem cells (HSCs). Gab2 may also act in a linear pathway upstream or downstream of signal transducer and activator of transcription-5 (STAT5), a major positive regulator of HSC function. Therefore, we aimed to determine whether Gab2 and STAT5 function in hematopoiesis in a redundant or non-redundant manner. Methodology/Principal Findings To do this we generated Gab2 mutant mice with heterozygous and homozygous deletions of STAT5. In heterozygous STAT5 mutant mice, deficiencies in HSC/multipotent progenitors were reflected by decreased long-term repopulating activity. This reduction in repopulation function was mirrored in the reduced growth response to early-acting cytokines from sorted double mutant c-Kit+Lin−Sca-1+ (KLS) cells. Importantly, in non-ablated newborn mice, the host steady-state engraftment ability was impaired by loss of Gab2 in heterozygous STAT5 mutant background. Fetal liver cells isolated from homozygous STAT5 mutant mice lacking Gab2 showed significant reduction in HSC number (KLS CD150+CD48−), reduced HSC survival, and dramatic loss of self-renewal potential as measured by serial transplantation. Conclusions/Significance These data demonstrate new functions for Gab2 in hematopoiesis in a manner that is non-redundant with STAT5. Furthermore, important synergy between STAT5 and Gab2 was observed in HSC self-renewal, which might be exploited to optimize stem cell-based therapeutics.
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Affiliation(s)
- Geqiang Li
- Division of Hematology-Oncology, Department of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
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