IE852191L - Therapeutic agent for treating tumours - Google Patents

Therapeutic agent for treating tumours

Info

Publication number
IE852191L
IE852191L IE852191A IE219185A IE852191L IE 852191 L IE852191 L IE 852191L IE 852191 A IE852191 A IE 852191A IE 219185 A IE219185 A IE 219185A IE 852191 L IE852191 L IE 852191L
Authority
IE
Ireland
Prior art keywords
therapeutic agent
treatment
cells
nca
tumor cells
Prior art date
Application number
IE852191A
Other versions
IE58638B1 (en
Original Assignee
Behringwerke Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behringwerke Ag filed Critical Behringwerke Ag
Publication of IE852191L publication Critical patent/IE852191L/en
Publication of IE58638B1 publication Critical patent/IE58638B1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K39/0005Vertebrate antigens
    • A61K39/0011Cancer antigens
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • A61K38/16Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/43Enzymes; Proenzymes; Derivatives thereof
    • A61K38/46Hydrolases (3)
    • A61K38/47Hydrolases (3) acting on glycosyl compounds (3.2), e.g. cellulases, lactases

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Oncology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Engineering & Computer Science (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Window Of Vehicle (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Peptides Or Proteins (AREA)
  • Saccharide Compounds (AREA)

Abstract

The process entails either tumour cells which carry antigens which are bound by the monoclonal antibodies described in German Offenlegungsschrift 33 29 184 being dried or stabilised by a chemical treatment, or antigens being isolated from human cells using these monoclonal antibodies, and converted into a therapeutic agent, adding neuraminidase where appropriate.

Description

58658 - 2 - The invention relates to a process for the preparation of a therapeutic agent from tumor cells for the therapy of tumorous diseases, and to a therapeutic agent of this type. 5 It is known, for example from "Mechanisms of Tumor Immunity," Gree et al., eds., John Wiley and Sons, N.Y., 1977, page 196, that attempts have already been made to treat tumorous diseases by inoculation with tumor cells which have been modified by freezing and thawing, freeze-10 drying, pressure or homogenization. Subcellular fractions or cell extracts have also been used for this purpose. However, as yet no vaccine against a tumorous disease has been disclosed.
We have found, surprisingly, that cells, which have 15 been freeze-dried or treated with an aldehyde, from human tumors or from cell aggregates obtained from the latter, which carry the antigens CEA or NCA can be used as a therapeutic agent for the treatment of tumorous diseases. 20 Thus the invention relates to a therapeutic agent for the treatment of a tumorous disease, containing human tumor cells which have been freeze-dried or stabilized by a chemical treatment and which carry the membrane-associated antigens CEA 25 or NCA.
One advantage of a therapeutic agent of this type compared with the use. of unmodified cells is that unmodified cells are not stable, so that they have to be prepared fresh each time. Moreoever, for this reason, they 30 cannot be standardized.
The invention furthermore relates to a process for the preparation of a therapeutic agent for the treatment of a tumorous disease, which comprises the freeze-drying or stabilization, by a chemical treatment, and the processing 35 to a therapeutic agent, neuraminidase being added where appropriate, of human tumor cells which carry the antigens CEA or NCA. - 3 - The possibility of potentiating an immune response by neuraminidase is disclosed in German Offenlegungsschrift 2,620,649.
A therapeutic agent is to be understood to be an 5 agent which may be suitable both as a prophylatic and for the treatment of a manifest disease.
The cells which can be used within the scope of the invention are obtained from tumors by known cell culture processes. Cells which have been obtained from such cul-10 tures by mechanical or enzymatic means and have, where appropriate, been inactivated with mitomycin C, are dried, preferably freeze-dried, or treated with an agent known to those skilled in the art as a stabilizing agent for organic tissue, preferably a nonoaldehyde or dialdehyde having 1 15 to 6 carbon atoms.
The agents which are particularly suitable for chemical stabilization and fixation include, in particular, bifunctional compounds, that is to say those which contain two groups which can react with functional groups 20 on the biological material - 1n other words can "crosslink" it. Examples of these are dialdehydes, in particular aliphatic dialdehydes having 2-8 carbon atoms. However, monoaIkanaIs having 1-4 carbon atoms, such as formaldehyde, which can undergr bifunctional reactions, as well as bi-25 functional imino esters, such as suberimidate, isocyanates or isothiocyanates, are also suitable for this purpose.
It is also possible for so-called tanning agents such as, for example, tannic acid and its derivatives, or chromium salts, to be used as agents which can stabilize 30 biological material. SulfosaIicy I ic acid is also suitable. _ 4 - In general, the cells are in the form of cell aggregates or single cells.
Examples of antigens are CEA (carcino-embyronic antigen; J.exp. Med. <1965) 122, *67) NCA (non-5 specific crossreacting antigen; J. Immun. (1973) III/ 1926) which can be isolated from the tumor cells by immunoadsorp-tion chromatography. For this purpose, the monoclonal antibodies described in Table I of German Offenlegungs-schrift 3,416,774 are covalently bound as purified pro-10 teins, to CN8r-activated sepharose 48, and the antigens (CEA, NCA) recognised by these monoclonal antibodies, are isolated from DE-TA colon carcinoma cell extracts. A suitable process is described in the Pharmacia book "Affinity Chromatography, Principles and Methods", 12-18 (1979), 15 summarized on page 15.
Quality control of a material which is to be used as a vaccine is carried out by, for fxample, typing with monoclonal antibodies, or by fractionation of the total cellular proteins using SDS-polyacrylamide gel electro-20 phoresis or isoelectric focusing (1st dimension) combined with SDS-polyacrylam1de gel electrophoresis (2nd dimension) followed by staining of the gel (silver stain).
The antigenic material 1s preferably administered i ntraderma lly, preferably by the checkerboard vaccination 25 method (Cancer Immunol, and Immunother. 6,47-58 (1979), in particular page 48) in combination with an adjuvant, in particular neuraminidase (German Of f enlegungsschri ft 2,620,649) .
A vaccine of this type is preferably used for certain stages of colon carcinoma (Duke C) and for other tumors which carry antigens or epitopes which are present in the 5 vaccine. Other tumors of this type are solid tumors, for example carcinomas of the pancreas, of the stomach, of the breast and of the lungs. The vaccine can be administered parenterally or orally. The antigens can be administered dissolved or suspended in physiological saline, preferably 10 i nt ra d er ma 11 y in PBS.
Two tests were carried out to assess the stability of the antigenic composition of the vaccine: a) the Terasaki IIF Assay (indirect immunofluorescence using tumor cells which grow in the wells of the Terasaki 15 microtiter plate) with monoclonal antibodies of various specificities. It is pcssible by means of this test to measure the expression of membrane antigens on intact tumor cells, against which a number of moncclonal antibodies are available (Cancer Detection and Prevention The examples which follow illustrate the invention. 30 Example 1 The carcinoma cell line BW X was cultivated in a cell culture in plastic bottles, growing as a monolayer in RPMI-1640 medium (Moore, G.E., Gerner, R.E., Franklin, H.A., Culture of normal human leukocytes, J.A.M.A. 199, 519-524 35 (1967)) with 10% fetal calf serum. The adherent cells growing in confluent cultures were separated mechanically or using trypsin which was dissolved in RPMI-1640 medium containing no fetal calf serum, the collagenase was inactivated by addition of fetal calf serum dissolved in RPMI-1640, and then the cells were detached from the tissue culture bottles and washed 3 times in phosphate-buffered saline CPBS) at 37°C.
About 107 cells, the major part of which as in 5 the form of aggregates, were incubated at 37°C for 1 hour in 1 ml of PBS which contained 100 pg of mitomycin C.
Then the cells thus inactivated were washed 3 times with PBS and a) washed 3 times in 0.18 molar ammonium bicarbonate buffer 10 which had been adjusted to pH 7.4 with acetic acid. A cell sediment corresponding to 10^ cells was taken up in 100 jjI of the same ammonium bicarbonate buffer and frozen at -70°C. The frozen material was then freeze-dried and stored in a small glass bottle, which was closed air-tight, 15 in a refrigerator at +4°C. The cell material thus treated can, after having been taken up in PBS, be used for vaccination of patients.
Alternatively b) incubated with 0.1% glutaraIdehyde in PBS at +4°C for 20 5 minutes, the excess glutaraIdehyde being removed by washing 3 times with PBS, and then incubated with 2% BSA (Bovine Serum Albumin) at +4°C for 5 minutes and washed 3 times in PBS. The cells thus treated can be stored at +4°C and used for the vaccination of patients. 25 Or c) incubated in formalin according to Lilly (Benno Romeis (1968), page 65, section 266, Oldenburg Verlag, Munich) at 25°C overnight, shaking occasionally. The cells (about 108) were centrifuged with decantation of the supernatant 30 (10 minutes at 800 x g), and the cell sediment was suspended in 7 ml of double-distilled water (= 1st wash). This washing process was repeated 4 times at intervals of 1 hour. The cell sediment was then washed 3 times, at intervals of 1 hour, in 7 ml of 70% ethanol each time. The cell sedi-35 ment was then washed 3 times, at intervals of 30 minutes, in 7 ml of 80% ethanol each time. The cell sediment was then washed 3 times, at intervals of 30 minutes, in 7 ml of 96% ethanol each time. The cell sediment was then washed 3 times, at intervals of 30 minutes, in 7 ml of 99% ethanol each time. The cell sediment was then washed 3 times, at intervals of 30 minutes, in 7 ml of sterile PBS each time, and was stored sterile at 4°C. The cells thus treated can be stored at 4°C and used for the vaccination of patients. - 8 -

Claims (6)

CLAIMS:
1. A therapeutic agent for the treatment of a tumorous disease, containing human tumor cells which have been freeze-dried or stabilized by a chemical 5 treatment and which carry the membrane-associated antigens CEA or NCA.
2. A therapeutic agent as claimed in claim 1, which contains an adjuvant which potentiates the immune response, preferably neuraminidase. 10
3. A process for the preparation of a therapeutic agent for the treatment of a tumorous disease, which comprises the freeze-drying or stabilization by a chemical treatment, and, the processing to a therapeutic agent, of human tumor cells which carry the membrane-15 associated antigens CEA or NCA.
4. The process as claimed in claim 3, wherein an adjuvant which potentiates the immune response, preferably neuraminidase, is additionally added to the therapeutic agent. 20
5. The use of human tumor cells which carry the membrane-associated antigens CEA or NCA, where appropriate in combination with an adjuvant which potentiates the immune response, preferably neuraminidase, for the preparation of a therapeutic 25 agent for the treatment of tumorous diseases.
6. A therapeutic agent as claimed in claim 1, substantially as hereinbefore described and exemplified. F. R. KELLY & CO., AGENTS FOR THE APPLICANTS
IE219185A 1984-09-06 1985-09-05 A tumor therapeutic agent and a process for its preparation IE58638B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843432714 DE3432714A1 (en) 1984-09-06 1984-09-06 TUMOR THERAPEUTICS AND METHOD FOR THE PRODUCTION THEREOF

Publications (2)

Publication Number Publication Date
IE852191L true IE852191L (en) 1986-03-06
IE58638B1 IE58638B1 (en) 1993-10-20

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Application Number Title Priority Date Filing Date
IE219185A IE58638B1 (en) 1984-09-06 1985-09-05 A tumor therapeutic agent and a process for its preparation

Country Status (13)

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EP (1) EP0173951B1 (en)
JP (1) JPS6168427A (en)
AT (1) ATE64531T1 (en)
CA (1) CA1277600C (en)
DE (2) DE3432714A1 (en)
DK (1) DK172253B1 (en)
ES (1) ES8704082A1 (en)
FI (1) FI88360C (en)
GR (1) GR852149B (en)
IE (1) IE58638B1 (en)
IL (1) IL76289A (en)
PT (1) PT81093B (en)
ZA (1) ZA856807B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806565A1 (en) * 1988-03-01 1989-09-14 Deutsches Krebsforsch VIRUS-MODIFIED TUMOR VACCINES FOR THE IMMUNOTHERAPY OF TUMOR METAL KEYS
AT398900B (en) * 1991-02-12 1995-02-27 Pekar Rudolf Dr Vaccine for immunotherapy
US7105159B1 (en) 1992-11-05 2006-09-12 Sloan-Kettering Institute For Cancer Research Antibodies to prostate-specific membrane antigen
US7070782B1 (en) 1992-11-05 2006-07-04 Sloan-Kettering Institute For Cancer Research Prostate-specific membrane antigen
US6953668B1 (en) 1992-11-05 2005-10-11 Sloan-Kettering Institute For Cancer Research Prostate-specific membrane antigen
DE69334071T2 (en) * 1992-11-05 2007-10-25 Sloan-Kettering Institute For Cancer Research PROSTATE-SPECIFIC MEMBRANEANT
US6569432B1 (en) 1995-02-24 2003-05-27 Sloan-Kettering Institute For Cancer Research Prostate-specific membrane antigen and uses thereof
US7037647B1 (en) 1995-02-24 2006-05-02 Sloan-Kettering Institute For Cancer Research Prostate-specific membrane antigen and uses thereof
DE19506483A1 (en) * 1995-02-24 1996-08-29 Jens Dr Dr Atzpodien Antitumour vaccines
US20050215472A1 (en) 2001-10-23 2005-09-29 Psma Development Company, Llc PSMA formulations and uses thereof
EP3184539A3 (en) 2001-10-23 2017-09-13 PSMA Development Company L.L.C. Psma antibodies
CN1315536C (en) * 2002-09-13 2007-05-16 李进 Novel vaccine of tumor antigen, its preparation method and vaccine composition

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152410A (en) * 1975-09-03 1979-05-01 Eisai Co., Ltd. Diagnosis reagent for neoplasm and method for diagnosis of neoplasm
DE2643215A1 (en) * 1976-09-25 1978-04-06 Bayer Ag CANCEROSTATICALLY EFFECTIVE PREPARATIONS FROM TUMOR CELLS AND A METHOD FOR THEIR PRODUCTION
ZA776822B (en) * 1976-11-24 1979-06-27 D Mccollester Vaccine and method for immunotherapy of neoplastic disease
DE2918927A1 (en) * 1979-05-10 1980-11-20 Hans Prof Dr Limburg MEDICINAL PRODUCT FOR TREATING CARCINOMAS AND METHOD FOR THE PRODUCTION THEREOF
US4446122A (en) * 1979-12-28 1984-05-01 Research Corporation Purified human prostate antigen
US4468457A (en) * 1981-06-01 1984-08-28 David M. Goldenberg Method for producing a CSAp tryptic peptide and anti-CSAp antibodies
DE3329184A1 (en) * 1983-08-12 1985-02-21 Behringwerke Ag, 3550 Marburg MONOCLONAL ANTIBODIES WITH SPECIFICITY FOR MEMBRANE-ASSOCIATED ANTIGENS
DE3416774A1 (en) * 1984-05-07 1985-11-14 Behringwerke Ag, 3550 Marburg MONOCLONAL ANTIBODIES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE

Also Published As

Publication number Publication date
FI853389A0 (en) 1985-09-04
ES546701A0 (en) 1987-03-16
FI853389L (en) 1986-03-07
ZA856807B (en) 1986-04-30
DK402485D0 (en) 1985-09-03
GR852149B (en) 1986-01-03
DK172253B1 (en) 1998-02-09
IL76289A0 (en) 1986-01-31
PT81093B (en) 1988-07-01
DE3583265D1 (en) 1991-07-25
ATE64531T1 (en) 1991-07-15
JPS6168427A (en) 1986-04-08
DE3432714A1 (en) 1986-04-24
PT81093A (en) 1985-10-01
EP0173951B1 (en) 1991-06-19
ES8704082A1 (en) 1987-03-16
DK402485A (en) 1986-03-07
EP0173951A3 (en) 1988-06-08
FI88360B (en) 1993-01-29
CA1277600C (en) 1990-12-11
EP0173951A2 (en) 1986-03-12
IE58638B1 (en) 1993-10-20
IL76289A (en) 1992-01-15
FI88360C (en) 1993-05-10

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