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Dive into the research topics where Pa Keep is active.

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Featured researches published by Pa Keep.


Nature Medicine | 1996

Clinical evidence of efficient tumor targeting based on single-chain Fv antibody selected from a combinatorial library

Richard H. J. Begent; M.J. Verhaar; Ka Chester; J.L. Casey; A.J. Green; M.P. Napier; L.D. Hopestone; N. Cushen; Pa Keep; C.J. Johnson; Robert E. Hawkins; A.J.W. Hilson; L Robson

We present a system for cancer targeting based on single–chain Fv (scFv) antibodies selected from combinatorial libraries, produced in bacteria and purified by using an engineered tag. Combinatorial libraries of scFv genes contain great diversity, and scFv antibodies with characteristics optimized for a particular task can be selected from them using filamentous bacteriophage. We illustrate the benefits of this system by imaging patients with carcinoembryonic antigen (CEA)–producing cancers using an iodine–123 labeled scFv anti–CEA selected for high affinity. All known tumor deposits were located, and advantages over current imaging technology are illustrated. ScFvs are produced in a cloned form and can be readily engineered to have localizing and therapeutic functions that will be applicable in cancer and other diseases.


Biochemical Journal | 2000

Crystal Structure of the Anti-Carcinoembryonic Antigen Single-Chain Fv Antibody Mfe-23 and a Model for Antigen Binding Based on Intermolecular Contacts

Mark K. Boehm; Adam L. Corper; Tommy Wan; Maninder K. Sohi; Brian J. Sutton; Jeremy D. Thornton; Pa Keep; Kerry A. Chester; Richard Begent; Stephen J. Perkins


The Journal of Nuclear Medicine | 1984

Analysis of Radioimmunodetection of Tumors by the Subtraction Technique

Alan J. Green; Richard H. J. Begent; Pa Keep; K. D. Bagshawe


The Journal of Nuclear Medicine | 1996

Technetium-99m Radiolabeling Using a Phage-Derived Single-Chain Fv with a C-Terminal Cysteine

Marlies J. Verhaar; Pa Keep; Robert E. Hawkins; L Robson; J.L. Casey; Barbara Pedley; J Boden; Richard H. J. Begent; Kerry A. Chester


In: Begent, RHJAH and A, , (eds.) New Antibody technology and the Emergence of Useful Cancer Therapy. London: Royal Society of Medicine Press (1995) | 1995

Filamentous phage antibodies: the power of selection for clinical use.

Ka Chester; Rhj Begent; L Robson; Pa Keep; Rb Pedley; J Boden; Gm Boxer; Aj Green; P Michale; Gregory Paul Winter; O Cochet; Re and Hawkins


In: (pp. 16-). (1995) | 1995

Antibodies from phage libraries - clinical imaging trial of a filamentous bacteriophage- derived single-chain FV anti-CEA expressed in Escherichia-coli

Rhj Begent; Ka Chester; J. L. Casey; Aj Green; Mp Napier; L Hopestone; Pa Keep; L Robson; Dm Lane; Cj Johnson


In: (Proceedings) Proceedings BACR, Br J Cancer. (pp. 15-). (1994) | 1994

A high affinity anti-CEA scFv for tumour targeting produced in filamentous phage.

Ka Chester; Rhj Begent; L Robson; Pa Keep; Rb Pedley; J Boden; Gm Boxer; P Savage; Gregory Paul Winter; O Cochet


In: (pp. p. 198). (1994) | 1994

Production of a high-affinity anti-CEA SCFV for colorectal tumour targeting

Ka Chester; Rhj Begent; L Robson; Pa Keep; Rb Pedley; J Boden; Gm Boxer; Aj Green; Gregory Paul Winter; O Cochet; Ref Hawkins


(1994) | 1994

Filamentous phage antibodies: the power of selection for clinical use. In: New Antibody technology and the Emergence of Useful Cancer Therapy.

Ka Chester; Rhj Begent; L Robson; Pa Keep; Rb Pedley; J Boden; Gm Boxer; Aj Green; P Michale; Gregory Paul Winter; O Cochet; Re and Hawkins


In: (pp. p. 556). (1984) | 1984

The use of 2nd antibody to improve selective localization of tumours- clinical studies

Rhj Begent; Aj Green; Ka Chester; Pa Keep; F Searle; K. D. Bagshawe

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J Boden

Charing Cross Hospital

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Rb Pedley

University College London

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F Searle

Charing Cross Hospital

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