Tattoo ink induces inflammation in the draining lymph node and alters the immune response to vaccination

A Arianna Capucetti (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) J Juliana Falivene (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) C Chiara Pizzichetti (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) I Irene Latino (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) L Luca Mazzucchelli (Ente Ospedaliero Cantonale, Istituto Cantonale di Patologia) V Vivien Schacht (Department of Dermatology, Allergology and Venereology, Hannover Medical School) U Urs Hauri (Basel Kantonal Laboratory, Chromatographie Group) A Andrea Raimondi (Protein Folding and Quality Control, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) T Tommaso Virgilio (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) A Alain Pulfer (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) S Simone Mosole (Faculty of Biomedical Sciences, Institute of Oncology Research, Università della Svizzera Italiana) L Llorenç Grau-Roma (Department of Infectious Diseases and Pathobiology, Institute of Animal Pathology, Comparative Pathology Platform, Vetsuisse Faculty, University of Bern) W Wolfgang Bäumler (Department of Dermatology, University Hospital Regensburg) M Martin Palus (Institute of Parasitology, Biology Centre of the Czech Academy of Sciences) L Louis Renner (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) D Daniel Ruzek (Institute of Parasitology, Biology Centre of the Czech Academy of Sciences) G Gabrielle Goldman Levy (World Health Organization Classification of Tumours, International Agency for Research on Cancer) M Milena Foerster (Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer) K Kamil Chahine (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana) S Santiago F. Gonzalez (Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana)

Abstract

Despite safety concerns regarding the toxicity of tattoo ink, no studies have reported the consequences of tattooing on the immune response. In this work, we have characterized the transport and accumulation of different tattoo inks in the lymphatic system using a murine model. Upon quick lymphatic drainage, we observed that macrophages mainly capture the ink in the lymph node (LN). An initial inflammatory reaction at local and systemic levels follows ink capture. Notably, the inflammatory process is maintained over time, as we observed clear signs of inflammation in the draining LN 2 mo following tattooing. In addition, the capture of ink by macrophages was associated with the induction of apoptosis in both human and murine models. Furthermore, the ink accumulated in the LN altered the immune response against two different types of vaccines. On the one hand, we observed a reduced antibody response following vaccination with an messenger ribonucleic acid (mRNA)-based severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine, which was associated with a decreased expression of the spike protein in macrophages in the draining LN. In contrast, we observed an enhanced response when vaccinated with influenza vaccine inactivated by ultraviolet (UV) radiation. Considering the unstoppable trend of tattooing in the population, our results are crucial in informing the toxicology programs, policymakers, and the general public regarding the potential risk of the tattooing practice associated with an altered immune response.

Article Details

Volume / Issue Vol. 122, Issue 48
Published December 02, 2025
ISSN 0027-8424
Publisher National Academy of Sciences

Authors (20)

A

Arianna Capucetti

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

J

Juliana Falivene

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

C

Chiara Pizzichetti

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

I

Irene Latino

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

L

Luca Mazzucchelli

Ente Ospedaliero Cantonale, Istituto Cantonale di Patologia

V

Vivien Schacht

Department of Dermatology, Allergology and Venereology, Hannover Medical School

U

Urs Hauri

Basel Kantonal Laboratory, Chromatographie Group

A

Andrea Raimondi

Protein Folding and Quality Control, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

T

Tommaso Virgilio

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

A

Alain Pulfer

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

S

Simone Mosole

Faculty of Biomedical Sciences, Institute of Oncology Research, Università della Svizzera Italiana

L

Llorenç Grau-Roma

Department of Infectious Diseases and Pathobiology, Institute of Animal Pathology, Comparative Pathology Platform, Vetsuisse Faculty, University of Bern

W

Wolfgang Bäumler

Department of Dermatology, University Hospital Regensburg

M

Martin Palus

Institute of Parasitology, Biology Centre of the Czech Academy of Sciences

L

Louis Renner

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

D

Daniel Ruzek

Institute of Parasitology, Biology Centre of the Czech Academy of Sciences

G

Gabrielle Goldman Levy

World Health Organization Classification of Tumours, International Agency for Research on Cancer

M

Milena Foerster

Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer

K

Kamil Chahine

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana

S

Santiago F. Gonzalez

Infection and Immunity Laboratory, Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana