Thomas R. Bauer Jr., Ph.D.
Thomas R. Bauer Jr., Ph.D.
Staff Scientist

Center for Cancer Research
National Cancer Institute

Building 10-CRC, Room 3-3264
Bethesda, MD 20892-1203
301-435-7125

Dr. Bauer has been working for more than a decade towards gene therapy to treat a childhood immunodeficiency disease known as leukocyte adhesion deficiency (LAD).  Patients with LAD have defects in their leukocyte integrin CD18 gene, which leads to defective leukocytes that are unable to adhere to and migrate to sites of bacterial infection.  In dogs that have canine leukocyte adhesion deficiency (CLAD), Dr. Bauer and his colleagues have shown that by using gene transfer of the canine CD18, they are able to correct the CD18 defect in canine leukocytes, both in vitro and in vivo, leading to dogs that are free of their CLAD disease.

Areas of Expertise
1) leukocyte adhesion deficiency (LAD), 2) canine leukocyte adhesion deficiency (CLAD), 3) gene transfer, 4) leukocytes

For over a decade, our lab has been working towards gene therapy of the childhood immunodeficiency disease "Leukocyte Adhesion Deficiency", also known as LAD. Patients with LAD have defects in their leukocyte integrin CD18 gene, which leads to defective leukocytes unable to adhere to and migrate to sites of bacterial infection. Although hematopoietic stem cell transplantation can cure LAD patients, too few patients have suitable transplantation donors. We have investigated the possibility of transferring a functional copy of the CD18 gene into patients' hematopoietic stem cells using gene transfer with retroviral vectors.

Towards this end, we have used an animal model of LAD in dogs, known as "Canine Leukocyte Adhesion Deficiency" or CLAD, to investigate the various vectors and conditions required for successful gene transfer. We have shown that by using gene transfer of the canine CD18, we are able to correct the CD18 defect in canine leukocytes, both in vitro and in vivo, leading to dogs that are free of their CLAD disease.

Scientific Focus Areas:
Clinical Research, Computational Biology, Genetics and Genomics, Molecular Biology and Biochemistry
Selected Recent Publications
  1. Bauer, Jr. TR, Tuschong LM, Calvo KR, Shive HR, Burkholder TH, Karlsson EK, West RR, Russell DW, Hickstein DD.
    Mol Ther. 21: 964-72, 2013. [ Journal Article ]
  2. Donahue RE, Tuschong L, Bauer, Jr. TR, Yau YY, Leitman SF, Hickstein DD.
    Blood. 118: 4209-14, 2011. [ Journal Article ]
  3. Hunter MJ, Zhao H, Tuschong LM, Bauer, Jr. TR, Burkholder TH, Persons DA, Hickstein DD.
    Hum Gene Ther. 22: 689-96, 2011. [ Journal Article ]
  4. Bauer, Jr. TR, Olson EM, Huo Y, Tuschong LM, Allen JM, Li Y, Burkholder TH, Russell DW.
    Gene Ther. 18: 553-9, 2011. [ Journal Article ]
  5. Hunter MJ, Tuschong LM, Fowler CJ, Bauer, Jr. TR, Burkholder TH, Hickstein DD.
    Mol Ther. 19: 113-21, 2011. [ Journal Article ]

Born in Southwestern PA, but raised during my formative years in the suburbs of Los Angeles, I left SoCal for Indiana, where I received a B.S. in microbiology from the University of Notre Dame in 1985. Desiring warmer weather, I went to the University of Miami (Florida), where I received a Ph.D. in microbiology and immunology in 1992 studying human immunoglobulin lambda light chain genes. From there, I joined the laboratory of Dennis Hickstein in Seattle, where I was a postdoc and later acting instructor, working on LAD and CD18, and to my current position as staff scientist at the NCI.

Summary

Dr. Bauer has been working for more than a decade towards gene therapy to treat a childhood immunodeficiency disease known as leukocyte adhesion deficiency (LAD).  Patients with LAD have defects in their leukocyte integrin CD18 gene, which leads to defective leukocytes that are unable to adhere to and migrate to sites of bacterial infection.  In dogs that have canine leukocyte adhesion deficiency (CLAD), Dr. Bauer and his colleagues have shown that by using gene transfer of the canine CD18, they are able to correct the CD18 defect in canine leukocytes, both in vitro and in vivo, leading to dogs that are free of their CLAD disease.

Areas of Expertise
1) leukocyte adhesion deficiency (LAD), 2) canine leukocyte adhesion deficiency (CLAD), 3) gene transfer, 4) leukocytes

Research

For over a decade, our lab has been working towards gene therapy of the childhood immunodeficiency disease "Leukocyte Adhesion Deficiency", also known as LAD. Patients with LAD have defects in their leukocyte integrin CD18 gene, which leads to defective leukocytes unable to adhere to and migrate to sites of bacterial infection. Although hematopoietic stem cell transplantation can cure LAD patients, too few patients have suitable transplantation donors. We have investigated the possibility of transferring a functional copy of the CD18 gene into patients' hematopoietic stem cells using gene transfer with retroviral vectors.

Towards this end, we have used an animal model of LAD in dogs, known as "Canine Leukocyte Adhesion Deficiency" or CLAD, to investigate the various vectors and conditions required for successful gene transfer. We have shown that by using gene transfer of the canine CD18, we are able to correct the CD18 defect in canine leukocytes, both in vitro and in vivo, leading to dogs that are free of their CLAD disease.

Scientific Focus Areas:
Clinical Research, Computational Biology, Genetics and Genomics, Molecular Biology and Biochemistry

Publications

Selected Recent Publications
  1. Bauer, Jr. TR, Tuschong LM, Calvo KR, Shive HR, Burkholder TH, Karlsson EK, West RR, Russell DW, Hickstein DD.
    Mol Ther. 21: 964-72, 2013. [ Journal Article ]
  2. Donahue RE, Tuschong L, Bauer, Jr. TR, Yau YY, Leitman SF, Hickstein DD.
    Blood. 118: 4209-14, 2011. [ Journal Article ]
  3. Hunter MJ, Zhao H, Tuschong LM, Bauer, Jr. TR, Burkholder TH, Persons DA, Hickstein DD.
    Hum Gene Ther. 22: 689-96, 2011. [ Journal Article ]
  4. Bauer, Jr. TR, Olson EM, Huo Y, Tuschong LM, Allen JM, Li Y, Burkholder TH, Russell DW.
    Gene Ther. 18: 553-9, 2011. [ Journal Article ]
  5. Hunter MJ, Tuschong LM, Fowler CJ, Bauer, Jr. TR, Burkholder TH, Hickstein DD.
    Mol Ther. 19: 113-21, 2011. [ Journal Article ]

Biography

Born in Southwestern PA, but raised during my formative years in the suburbs of Los Angeles, I left SoCal for Indiana, where I received a B.S. in microbiology from the University of Notre Dame in 1985. Desiring warmer weather, I went to the University of Miami (Florida), where I received a Ph.D. in microbiology and immunology in 1992 studying human immunoglobulin lambda light chain genes. From there, I joined the laboratory of Dennis Hickstein in Seattle, where I was a postdoc and later acting instructor, working on LAD and CD18, and to my current position as staff scientist at the NCI.