Login to MyKarger

New to MyKarger? Click here to sign up.

Login with Facebook

Forgot Password? Reset your password

Authors, Editors, Reviewers

For Manuscript Submission, Check or Review Login please go to Submission Websites List.

Submission Websites List

Institutional Login (Shibboleth)

For the academic login, please select your country in the dropdown list. You will be redirected to verify your credentials.

Table of Contents
Vol. 15, No. 5, 1994
Issue release date: 1994
Section title: Original Paper
Tumor Biology 1994;15:304–310
(DOI:10.1159/000217905)

pH-Dependent LAK Cell Cytotoxicity

Severin T.a,c · Müller B.a · Giese G.b · Uhl B.a · Wolf B.c · Hauschildt S.d · Kreutz W.a
aInstitut für Biophysik und Strahlenbiologie, Albert-Ludwigs-Universität, Freiburg i.Br., bMax-Planck-Institut für Zellbiologie, Rosenhof, Ladenburg, cAG Medizinische Physik und Elektronenmikroskopie, Institut für Immunbiologie, Albert-Ludwigs-Universität, and dAG Zelluläre Immunologie, Institut für Immunologie, Albert-Ludwigs-Universität, Freiburg i.Br., Germany

Do you have an account?

Login Information





Contact Information










I have read the Karger Terms and Conditions and agree.



Login Information





Contact Information










I have read the Karger Terms and Conditions and agree.



To view the fulltext, please log in

To view the pdf, please log in

Buy

  • FullText & PDF
  • Unlimited re-access via MyKarger
  • Unrestricted printing, no saving restrictions for personal use
read more

CHF 38.00 *
EUR 35.00 *
USD 39.00 *

Select

KAB

Buy a Karger Article Bundle (KAB) and profit from a discount!

If you would like to redeem your KAB credit, please log in.


Save over 20% compared to the individual article price.
Learn more

Rent/Cloud

  • Rent for 48h to view
  • Buy Cloud Access for unlimited viewing via different devices
  • Synchronizing in the ReadCube Cloud
  • Printing and saving restrictions apply

Rental: USD 8.50
Cloud: USD 20.00


Select

Subscribe

For eJournal Archive and eJournal Backfiles information please contact service@karger.com

* The final prices may differ from the prices shown due to specifics of VAT rules.

Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: February 28, 1994
Accepted: June 29, 1994
Published online: April 30, 2009
Issue release date: 1994

Number of Print Pages: 7
Number of Figures: 0
Number of Tables: 0

ISSN: 1010-4283 (Print)
eISSN: 1423-0380 (Online)

For additional information: http://www.karger.com/TBI

Abstract

In the microenvironment of many solid tumors the pH is considerably lower (mean pH between 6.6 to 7.2) than the pH in normal tissue (pH 7.0-7.5). Therefore, the influence of acidic pH on the cytotoxic activity of lymphokine-activated killer cells (LAK cells) after different culture periods was tested. K-562 human erythroleukemia cells were selected as target cells. Cell killing was measured using a two-color flow cytometric method. At physiological pH of 7.4, LAK cell-mediated cytotoxicity ranged from 15 to 48% (E:T ratio = 50:1). The specific lysis of target cells was considerably reduced (up to 70% inhibition of specific lysis) under acidic conditions (pH 6.8, 6.3, 5.8). This effect was independent of donors, duration of the culture period, and the E:T ratio in the cytotoxic assay. As pH gradients surrounding tumor cells may reach values below pH 6.0 at the cell surface, the pH-dependence of LAK cell cytotoxicity could at least partially explain the inhibition of the natural immune response in solid tumors. Therapeutic immunological strategies concerning the enhancement of the natural immune response like LAK cell and IL-2 immunotherapy including IL-2 gene therapy may only be successful if a simultaneous inhibition of the acidification process and an elevation of tumor pH is achieved.

© 1994 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: February 28, 1994
Accepted: June 29, 1994
Published online: April 30, 2009
Issue release date: 1994

Number of Print Pages: 7
Number of Figures: 0
Number of Tables: 0

ISSN: 1010-4283 (Print)
eISSN: 1423-0380 (Online)

For additional information: http://www.karger.com/TBI


Copyright / Drug Dosage / Disclaimer

Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher or, in the case of photocopying, direct payment of a specified fee to the Copyright Clearance Center.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.