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Personal Information |
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Education
Academic and Professional Experience
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Research Interests |
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My scientific interest is focused on investigation of biorecognition in general and on the nature of the interactions of antibodies and their corresponding antigens in particular. In my research work I am involved in the elucidation of the mode of action of monoclonal antibodies (mAbs) on the structure and function of their corresponding antigens in in vitro and in vivo environments. Antibodies were found to act as reporting probes for the detection of conformational changes induced in various protein antigens by environmental factors, as well as playing active roles in inducing changes and rearrangements in the antigen molecule. The following topics are being investigated:
My group prepared monoclonal antibodies towards several proteins, such as carboxypeptidase A, Che Y, hexosaminidase A, horseradish peroxidase, p53 protein, calmodulin and against aluminium ions, and recently against Alzheimer¹s ß-amyloid peptide and prion peptides 106-126, in order to study conformational changes occurring in these proteins when exposed to various working conditions. The monoclonal antibodies were used as probes to assay conformation changes of interacting epitopes in these target proteins, induced by temperature, pH, proteolytic cleavage or metal interactions. The availability of the mAbs enabled me and my collaborators to develop new immobilization techniques yielding fully active immobilized Ab-carrier conjugates, which led to novel techniques for enzyme immobilization and stabilization. The immobilized mAbs permitted the development of novel immunoaffinity techniques and original immunoassay techniques. A microalbuminuria assay based on the above techniques was especially appreciated and received an Award for Excellence in a Meeting of Clinical Biochemistry held in Japan in 1991. Protein aggregation plays an important role in various human diseases, such as Down¹s syndrome, Alzheimer¹s disease, diabetes and/or cataracts, and in many other so-called amyloidosis disorders. In order to reduce or eliminate the extent of pathological protein depositions my group focused on the development of potent and selective inhibitors of aggregate formation. We commenced our studies by using carboxypeptidase A (CPA) as a model system and a large panel of mAbs prepared against it. We found that appropriate mAbs interact at strategic sites where protein unfolding is initiated, thereby stabilizing the protein and suppressing further aggregation. These studies were extended on the suppression of Alzheimer ß-amyloid peptide by immunocomplexation with highly specific monoclonal antibodies raised against the peptide. The amyloid ß-peptide is a main component of the senile plaques amyloid found in the brain tissues of Alzheimer¹s diseased patients. Amyloid stability, even under harsh conditions, was one of the unsurmountable problems in the initial characterization of its constituents. We recently found that selected mAbs against ß-amyloid peptide can solubilize preformed ß-amyloid aggregated filaments by reversal of the ß-sheet insoluble conformation into a corresponding soluble random coil. Such Œchaperone-like¹ properties of mAbs were found to be related to so-called anti-aggregating epitopes on each antigen. We found that mAbs directed to these regions are able to interfer with the dynamics and rearrangement of whole molecules.
ß-Amyloid is only one example of at least 15 different polypeptides known to cause in vivo different forms of pathological amyloidosis via their deposition in particular organs and tissues as insoluble protein fibrils. The prevention of aggregation and solubilizations of other peptides that form amyloid in tissues, such as amylin, serum amyloid A, prion protein, are being investigated at present. Since properly selected mAbs can be prepared against virtually any antigen, their immunocomplexation may provide a general and convenient method for the stabilization of the soluble physiological conformation of the above proteins without affecting their biological properties. Our recent findings on the chaperone-like activity of mAbs in stabilization, refolding and solubilization of the already aggregated antigens, as well as the introduction of antibody engineering techniques, open up new possibilities for the potential use of mAbs in immunotherapy of Alzheimer¹s disease. The development of therapeutic antibodies for use as a future vaccine in Alzheimer¹s disease and/or other amyloidogenic diseases, such as prion disease, are the subject of the Master of Science and Ph.D. theses of students in my lab. We have started to apply our novel procedures for the production of anti-aggregating antibodies by active and passive immunization, as well as by direct delivery to the brain avoiding the blood brain barrier in the Alzheimer¹s disease model of transgenic mice. We recently commenced another project based on a search for biological markers in body fluids from Alzheimer¹s disease and control patients to enable evaluation of the pathophysiological hypothesis of this disease, taking into consideration the fact that a defect in the transduction system might play a central role in the pathogenesis of Alzheimer¹s disease. An early detection test for Alzheimer¹s disease is not yet available and there is an urgent need to develop technologies for its production, as wel as the accurate detection of AD. Our laboratories will study the metabolism of ßAPP in the human circulation. Such studies are aimed at elucidating environmental or nutritional factors which may alter the levels of ßAPP production and determine whether abnormalities of ßAPP metabolism evident in the brain in AD are reflected in the blood. |
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Full Publications |
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A. BOOKS
1. Solomon, B., Taraboulos,
A. and Katchalski-Katzir, E. Conformational Diseases.
Amyloid: Int. J. Exp. Clin. Invest. 6 (1999) 225-228.
22. G. Fleminger, E. Hadas, T. Wolf and B. Solomon, Oriented immobilization of periodate oxidized monoclonal antibodies on amino and hydrazide derivatives of Eupergit C. Applied Biochem. Biotech. 23, (1990) 123 139. 23. Fleminger
G., Solomon B., Wolf T. and Hadas E. The effect of
polyethylene glycol on the nonspecific adsorption
of protein to Eupergit C and agarose. J. of Chromatography,
510, (1990) 271 279. 25. Fleminger G., Wolf T., Hadas E. and Solomon B. Application of Eupergit C to high performance immunoaffinity of antigens and antibodies. J. of Chromatography, 510, (1990) 311 319. 26. F. Schwartz, E. Hadas, M. Harnik and B. Solomon, Evaluation of an Enzyme Linked Immunosorbent Assay for Determination of Plasma Aldosterone. J. of Immunoassay. 11(2), (1990) 215 234. 27. Solomon,
B., Larsen, K.S. and Riordan, J.F. Catalytic and conformational
changes induced by limited 28. Solomon B., Kopel R., Schwartz F., and Fleminger G. Enzymatic oxidation of monoclonal antibodies by soluble and immobilized bifunctional enzyme complexes. J. of Chromatography, 510, (1990) 321 329. 29. Solomon, B., Hadas, E., Koppel, R, Schwartz, F. and Fleminger, G. Highly active enzyme preparations immobilized via matrix conjugated anti Fc antibodies. J. of Chromatography. 539 (2) (1991) 335 341.
39. Solomon,
B., Koppel, R., Hanan, E. and Katzav, T. Monoclonal
antibodies inhibit in vitro fibrillar aggregation
of the Alzheimer's β-amyloid peptide. Proc.Nat.Acad.Sci.
USA 93 (1) (1996) 452-455.
41. Katzav,
T., Hanan, E. and Solomon, B. Effect of monoclonal
antibodies in preventing Carboxypeptidase A aggregation.
Appl. Biochem. Biotechnol. 23 (1996) 227-230. 42. Solomon,
B., Koppel, R., Frankel, D. and Hanan-Aharon, E. Disaggregation
of Alzheimer -amyloid by site-directed mAb. Proc.
Natl. Acad. Sci. USA 94 (1997) 4109-4112.
44. Levy, R., Shohat, L.
and Solomon, B. Specificity of an anti-aluminium monoclonal
antibody toward free and protein-bound aluminium.
J. Inorg. Biochem. 69 (1998) 159-163. 45. Frenkel,
D., Balass, M. and Solomon, B. N-terminal EFRH sequence
of Alzheimer’s -amyloid peptide represents the epitope
of its anti-aggregating antibodies. J. Neuroimmunology
88 (1998) 85-90.
47. Levy,
R., Wolf, T., Fleminger, G. and Solomon, B. Immuno-detection
of aluminium and aluminium induced conformational
changes in calmodulin implications in Alzheimer’s
disease. Molec. Cell. Biochemistry. 189 (1998) 41-46.
48. Wolf,
T., Solomon, B., Ivnitski, D., Rishpon, J. and Fleminger,
G. Interactions of calmodulin with metal ions and
with its target proteins revealed by conformation-sensitive
monoclonal antibodies. J. Molec. Recogn. 11 (1998)
1-6. 49. Frenkel,
D. Balass, M., Katchalski-Katzir, E. and Solomon,
B. High affinity binding of monoclonal antibodies
to the sequential epitope EFRH of -amyloid peptide
is essential for modulation of fibrillar aggregation.
J. Neuroimmunology 95 (1999) 136-142. 51. Frenkel,
D., Solomon, B. and Benhar, I. Modulation of Alzheimer’s
-amyloid neurotoxicity by site-directed single-chain
antibody. J. Neuroimmunol. 106 (2000) 23-31. 52. Solomon, B. and Frenkel, D. Vaccination towards prevention and treatment of Alzheimer’s disease. Drugs of Today 36 (2000) 655-663. 53. Frenkel,
D., Katz, O. and Solomon, B. Immunization against
Alzheimer’s β-amyloid plaques via EFRH administration.
Proc. Natl. Acad. Sci. USA 97 (2000) 11455-11459.
54. Steingart, R.A., Solomon,
B., Brenneman, D.E., Fridkin, M. and Gozes, I. VIP
and peptides related to activity-dependent neurotrophic
factor protect PC12 cells against oxidative stress.
J. Molec. Neurosci. 15 (2000) 137-145.
56. Frenkel, D., Kariv,
N. and Solomon, B. Generation of auto-antibodies towards
Alzheimer’s disease vaccination. VACCINE 19 (2001)
2615-2619. 57. Frenkel,
D. and Solomon, B. Towards Alzheimer’s β-amyloid vaccination.
Biologicals 29, (2001) 243-247. 58. Xinhui Li and Solomon, B. Zinc-mediated thermal stabilization of carboxypeptidase A. Bioengin. Molec. 18 (2001) 179-183. 59. Xinhui
Li and Solomon, B. Zinc-mediated thermal stabilization
of carboxypeptidase A. Bioengin. Molec. 18 (2001)
179-183. 60. Solomon,
B. Imunotherapeutic strategies towards prevention
and treatment of Alzheimer’s disease. DNA and Cell
Biology 20 (2001) 697-703. 61. Solomon,
B., Koppel, R. and Jossiphov, J. Immunostaining of
calmodulin and aluminium in Alzheimer’s diseaseaffected
brains. Brain Research Bull. 55, (2001) 253-256. 62. Solomon,
B. and R. Koppel. IgM detection via selective recognition
by mannose-binding protein. J. Biochem.Biophys. Meth.
49 (2001) 641-647. 63. Govorko,
D., Cohen, G. and Solomon, B. Single chain antibody
against the common epitope of mutant p53: isolation
and intracytosolic expression in mammalian cells.
J. Immunol. Meth. 258 (2001) 169-181. 64. Hanan,
E., Priola, S.A. and Solomon, B. Anti-aggregating
antibody raised against human PrP 106-126 recognizes
pathological and normal isoforms of the whole prion
protein. Cellular and Molec. Neurobiology. (2001).
21(6):693-703. 70. Pan,
W., Solomon, B., Maness, L.M., Kastin, A.J. Antibodies
to beta-amyloid decrease the blood-to-brain transfer
of beta-amyloid peptide. Exp. Biol Med (Maywood) (2002)
227(8): 609-15. 71. Solomon,
B. and Frenkel, D. Generation and brain delivery of
anti-aggregating antibodies against β-amyloid plaques
using phage display technology. J. Neural Transmission.
(2002) 62: 321-325. 73. Frenkel,
D., Dewachter, I., van Leuven, F. and Solomon, B.
Reduction of β-amyloid plaques in brain of transgenic
mouse model of Alzheimer’s disease by EFRH-phage immunization.
Vaccine (2003) 21:1060-1065. 75. Arbel
M, Lavie V, Solomon B. Generation of antibodies against
prion protein in wild-type mice via helix 1 peptide
immunization. J Neuroimmunol. 2003 144(1-2):38-45.
79. Solomon
B. Alzheimer's disease and immunotherapy. Curr Alz
Res (2004) 1:149-163.
81. Arbel
M, Yacobi I, Solomon B. Inhibition of amyloid precursor
protein processing by beta-secretase through site-directed
antibodies. Proc Natl Acad Sci USA (2005) 10:102(21):7718-23.
82. Solomon,
B. Peptide vaccine for Alzheimer's disease. Handbook
of Biologically Active Peptides (2005) 535-540. 83. Solomon,
B. In vivo targeting of amyloid plaques via intranasal
administration of phage anti-β-amyloid antibodies.
Proceedings of ADPD Conference 2005. 85. Solomon
B. Alzheimer's disease immunotherapy: from in vitro
amyloid immunomodulation to in vivo vaccination. J.
Alzheimer's Dis. (2006)1387-2877, 9: (3, Supplement),
433-438.
88. Rakover
I., Arbel M. and Solomon B. APP β-site-specific antibody
improves cognitive function and reduces microhemmorhage
and neuroinflammation in Tg 2576 mice without affecting
brain Aβ levels. Neurodegen Dis (2007) 4(5):392-402.
89. Becker
M., Lavie V. and Solomon B. Stimulation of endogenous
neurogenesis by anti-EFRH immunization in transgenic
mice model of Alzheimer’s disease. Proc Natl Acad
Sci USA (2007) 104(5):1691-6. 90. Solomon
B. Active Immunization against Alzheimer's beta-amyloid
peptide using phage display technology. Vaccine (2007)
25(16):3053-6. 91. B. Solomon.
Immunological approaches for amyloid beta clearance
toward Alzheimer's disease treatment. Rejuvenation
Research. (2007). In Press. C. CHAPTERS IN BOOKS 4. Solomon, B., Larsen, K.S. and Riordan, J.F. A neo isoform of Carboxypeptidase A produced by a single proteolytic cleavage. Ann. N.Y. Acad. of Sc. 613, (1990) 594 600. 5. B. Solomon and G. Fleminger. Application of Highly Active Matrix Conjugated Monoclonal Antibodies for the Isolation and Analysis of Enzymes, Monoclonal Antibodies. Applications in Clinical Oncology. (Chapman and Hall, eds.) England, Chap. 20, (1991) 193 201. 6. Solomon, B., Schwartz, F. and Levi, A. Dot enzyme linked immunoassay of urine albumin. Progress in Clin. Biochem.( K. Miyai, T. Tanno and E. Ishikawa, eds.) (1992) 247 249. 7. Solomon,
B. and Goldstein, L. Modulation of the catalytic pathway
of carboxypeptidase A by conjugation with polyvinylalcohols. 8. Solomon,
B. and Goldstein, L. Modulation of the catalytic pathway
of carboxypeptidase A by conjugation with polyvinylalcohols.
Advances in 9. Solomon,
B., Hanan, E., Koppel, R., Frankel, D., Ophir, I.
and Schenck, D. 10. Solomon, B., Gozanski-Katzav,T., Koppel, R. and Hanan-Aharon, E. Activity of monclonal antibodies in prevention of in vitro aggregation of their antigens. Stability and Stabilization of Biocatalysts. ( A. Ballesteros, F.J. Plou, J.L. Iborra and P.J. Halling, eds.) 183 (1998) 183-188. 11. Solomon, B. and Frenkel, D. Generation of autoantibodies towards Alzheimer’s disease vaccination. In Alzheimer’s Disease: Advances in Etiology, Pathogenesis and Therapeutics. (ed. K. Iqbal). (2001) 769-775. 12. Solomon, B. Aluminium, Calmodulin and Alzheimer’s Disease. Aluminium in Alzheimer’s Disease.Elsevier (Ed. C. Exley). (2001) 393-409. 13. Solomon, B. and Frenkel, D. Fast induction of anti-β-amyloid peptide immune response. Research and Practice in Alzheimer’s Disease and Other Dementias 5 (2001) 27-31. 14. Solomon, B. Therapeutic antibodies, a new approach for treatment of Alzheimer’s disease. Conformational Diseases (Eds. B. Solomon, A. Taraboulos, E. Katzir). (2001) 276-281. 15. Solomon,
B. Towards Diagnosis and Treatment of Alzheimer’s
Disease. Research and Perspectives in Alzheimer’s
Disease. Fondation IPSEN (Eds. K. Beyreuther, Y. Christen,
C.L. Masters) (2003) 11-19.
D. REVIEWS 1. Solomon,
B. Towards Alzheimer’s disease vaccination. Mini-Reviews
in Medicinal Chemistry. (2002) 2(1): 85-92. 2. Solomon,
B. Anti-aggregating antibodies, a new approach towards
treatment of conformational diseases. Current Medicinal
Chemistry. (2002) 9(19): 1667-75. 3. Solomon,
B. Immunological concept in the treatment of Alzheimer’s
disease. Drug Development Research. Review (2002)
56(2): 163-167. 4. Solomon,
B. Immunological approaches as therapy for Alzheimer’s
disease. Exp. Opp. Biol. Therapy (2002) 2 (8) 907-17.
5. Solomon,
B. Anti-aggregating antibodies, a new approach towards
treatment of conformational diseases. Current Medicinal
Chemistry. (2002) 9(19): 1737-49. 6. Solomon,
B. Protective molecules in Alzheimer’s disease: Therapeutic
antibodies. (2002) Drug News Perspectives. 15(7):
410-416.
8. Solomon,
B. Intravenous immunoglobulin and Alzheimer's disease
immunotherapy. Curr Opin Mol Ther. (2007);9(1):79-85.
10. Solomon,
B. A neuroimmunologist's perspective on Alzheimer's
disease therapy. Expert Rev Neurother. (2007) 7(5):439-41.
13. Arbel
M, Solomon B. A Novel Immunotherapy for Alzheimer's
Disease: Antibodies against the beta-secretase cleavage
site of APP. Curr Alzheimer Res. (2007) 4(4):437-45.
14. Arbel M. and B. Solomon. Attacking amyloid-beta from the inside. Trends in Immunology. (2007) 28(12): 511-3. E. PATENTS 1. Z. Hollander,
B. Solomon and E. Katchalski Katzir 2 . B. Solomon,
G. Fleminger and E. Hadas 3. B. Solomon 4. E. Paley
and B. Solomon 5. D. Govorko,
G. Cohen and B. Solomon 6. D. Frenkel
and B. Solomon 7. E. Hanan and B. Solomon |
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1. Brain delivery of anti-ß-amyloid antibodies obtained by EFRH-phage immunization
