SwePub
Sök i LIBRIS databas

  Utökad sökning

id:"swepub:oai:DiVA.org:uu-231464"
 

Sökning: id:"swepub:oai:DiVA.org:uu-231464" > Local CTLA4 blockad...

  • Sandin, Linda C.Uppsala universitet,Klinisk immunologi (författare)

Local CTLA4 blockade effectively restrains experimental pancreatic adenocarcinoma growth in vivo

  • Artikel/kapitelEngelska2014

Förlag, utgivningsår, omfång ...

  • 2014-01-16
  • Informa UK Limited,2014
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-231464
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-231464URI
  • https://doi.org/10.4161/onci.27614DOI
  • https://lup.lub.lu.se/record/4430827URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Antibody-mediated blockade of CTLA4 has been shown to be effective in treating a select group of patients with late-stage melanoma. The precise mechanism underlying the clinical activity of CTLA4 immunotherapy is poorly understood, although recent experimental findings indicate that antibody-mediated depletion of regulatory T cells (Tregs) in the tumor microenvironment plays a key role in efficacious antitumor responses. In the current study, we used an experimental model of pancreatic adenocarcinoma to compare the antitumor efficacy of peritumoral low-dose anti-CTLA4 monoclonal antibody (mAb) administration to that of a commonly utilized systemic high-dose anti-CTLA4 regimen. We selected pancreatic adenocarcinoma as it presents a particular challenge to clinicians due to its aggressive behavior, metastatic spread and limited treatment options. Furthermore, Fc gamma receptor (Fc gamma R)-dense myeloid cells commonly infiltrate pancreatic tumors, such that these tumor types exhibit increased susceptibility to CTLA4 antibody-targeted Treg depletion via antibody-dependent cell-mediated cytotoxicity (ADCC). Locally administered anti-CTLA4 mAb effectively reduced tumor growth at a low dose and no additional anti-tumor effects were apparent when increasing the dose or number of injections. No significant difference in overall survival was seen when comparing locally administered low-dose with standard systemic high-dose CTLA4 blockade therapy, and both delivery routes led to increased tumor-infiltrating effector T cells and reduced Treg cells. As opposed to low-dose peritumoral treatment, high-dose systemic therapy stimulated the accumulation of Tregs in secondary lymphoid organs, an effect that could potentially counteract the antitumor immunotherapeutic benefit of CTLA4 blockade. Our study confirms previous findings that local administration of low-dose anti-CTLA4 antibody generates sustained antitumor effects and provides rationale to devise ultrasound-guided intratumoral anti-CTLA4 antibody injection regimens to treat patients with pancreatic adenocarcinoma and other types of solid tumors. In support, clinical relevancy could include reduced immune-related adverse events by limiting systemic antibody spread to immune cell-dense organs.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Eriksson, FredrikUppsala universitet,Klinisk immunologi(Swepub:uu)freer194 (författare)
  • Ellmark, PeterLund University,Lunds universitet,Institutionen för immunteknologi,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Immunotechnology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)immt-pel (författare)
  • Loskog, Angelica S. I.Uppsala universitet,Klinisk immunologi(Swepub:uu)angelosk (författare)
  • Tötterman, Thomas H.Uppsala universitet,Klinisk immunologi(Swepub:uu)thomtott (författare)
  • Mangsbo, Sara M.Uppsala universitet,Klinisk immunologi(Swepub:uu)saman132 (författare)
  • Uppsala universitetKlinisk immunologi (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Oncoimmunology: Informa UK Limited3:1, s. e2761-2162-40112162-402X

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy