Author

Helena C. Junqueira

Universidade de São PauloORCID 0000-0002-0159-0191Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Signature Assays, Organisms & Methods

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Research Focus:cell type annotation· 2 Approach:experimental assay· 2 Organism:human· 2 Assay:proteomics· 2 Research Focus:cell signaling & trafficking· 1 Research Focus:metabolism & bioenergetics· 1 Approach:statistical model· 1

Frequent Co-Authors

Adriano B. Chaves‐FilhoiD· 1 shared Alex InagueiD· 1 shared Carina SihlbomiD· 1 shared Gabriella Lisboa dos SantosiD· 1 shared Hector Oreliana Fernandes FariaiD· 1 shared Johannes FuchsiD· 1 shared Karen Campos Fabiano· 1 shared Katherine TsantarlisiD· 1 shared

Activity by Year

2025-2026 · peak 1/yr

Co-Author Collaboration Network

10 top collaborators · 20 mutual co-author links

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1 shared paperBiochemistry

Adriano B. Chaves‐FilhoORCID

Mutual co-authors in cluster

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2 papers

Recent·Most cited

OPN3 mediates retinal-dependent lipofuscin accumulation and its loss sensitizes keratinocytes to blue-light-induced proteomic remodeling

Maiza Cristina Von Dentz, Helena C. Junqueira, Manuel Alejandro Herrera López, Gabriella Lisboa dos Santos, Johannes Fuchs, Katherine Tsantarlis, Carina Sihlbom, Leonardo Vinícius Monteiro de Assis, Maurı́cio S. Baptista

This study shows OPN3 promotes lipofuscin accumulation in keratinocytes under blue light and its loss reduces proteomic stress responses and lipofuscin formation.

bioRxiv · Sep 15, 2026 · PreprintCell Biology

Comparative study of Ergosterol and 7-dehydrocholesterol and their Endoperoxides: Generation, Identification and Impact in Phospholipid Membranes and Melanoma Cells

Megumi Nishitani Yukuyama, Karen Campos Fabiano, Alex Inague, Miriam Uemi, Rodrigo Santiago Lima, Larissa Regina Diniz, Tiago E. Oliveira, Thais Satie Iijima, Hector Oreliana Fernandes Faria, Rosângela Silva Santos, Maria Fernanda Valente Nolf, Adriano B. Chaves‐Filho, Marcos Yukio Yoshinaga, Helena C. Junqueira, Paolo Di Mascio, , Sayuri Miyamoto

This study compares the effects of ergosterol, 7-dehydrocholesterol, and cholesterol under oxidative stress in melanoma cells, showing endoperoxides from these sterols are more effective in reducing cell viability.

Photochemistry and Photobiology · Jan 21, 2025Peer-reviewedBiochemistry