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ADAM12 expression is upregulated in cancer cells upon radiation and constitutes a prognostic factor in rectal cancer patients following radiotherapy
Univ Copenhagen, Denmark.
Univ Copenhagen, Denmark.
Univ Copenhagen, Denmark.
Herlev Gentofte Hosp, Denmark.
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2023 (English)In: Cancer Gene Therapy, ISSN 0929-1903, E-ISSN 1476-5500Article in journal (Refereed) Epub ahead of print
Abstract [en]

Radiotherapy is one of the most common cancer treatments, yet, some patients require high doses to respond. Therefore, the development of new strategies leans toward personalizing therapy to avoid unnecessary burden on cancer patients. This approach prevents the administration of ineffective treatments or uses combination strategies to increase the sensitivity of cancer cells. ADAM12 has been shown to be upregulated in many cancers and correlate with poor survival and chemoresistance, thus making it a potential candidate responsible for radioresistance. Here, we show that ADAM12 expression is upregulated in response to irradiation in both mouse and human cancer cells in vitro, as well as in tumor tissues from rectal cancer patients. Interestingly, the expression of ADAM12 following radiotherapy correlates with the initial disease stage and predicts the response of rectal cancer patients to the treatment. While we found no cell-autonomous effects of ADAM12 on the response of colon cancer cells to irradiation in vitro, depletion of ADAM12 expression markedly reduced the tumor growth of irradiated cancer cells when subcutaneously transplanted in syngeneic mice. Interestingly, loss of cancer cell-derived ADAM12 expression increased the number of CD31(+)FAP(-) cells in murine tumors. Moreover, conditioned medium from ADAM12(-/-) colon cancer cells led to increased tube formation when added to endothelial cell cultures. Thus, it is tempting to speculate that altered tumor vascularity may be implicated in the observed effect of ADAM12 on response to radiotherapy in rectal cancer. We conclude that ADAM12 represents a promising prognostic factor for stratification of rectal cancer patients receiving radiotherapy and suggest that targeting ADAM12 in combination with radiotherapy could potentially improve the treatment response.

Place, publisher, year, edition, pages
SPRINGERNATURE , 2023.
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:liu:diva-196635DOI: 10.1038/s41417-023-00643-wISI: 001037147100001PubMedID: 37495855OAI: oai:DiVA.org:liu-196635DiVA, id: diva2:1788769
Note

Funding Agencies|Royal Library; Copenhagen University Library

Available from: 2023-08-17 Created: 2023-08-17 Last updated: 2023-08-17

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Sun, Xiao-Feng
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Division of Surgery, Orthopedics and OncologyFaculty of Medicine and Health SciencesDepartment of Oncology
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CiteExportLink to record
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