The role of small Heat Shock Proteins in Trypanosoma cruzi infection and intestinal homeostasis in a Chagas disease vector
Proceedings of the National Academy of Sciences·
- DOI
- 10.1073/pnas.2600647123
- PMID
- 42607220
- PMCID
- —
- OpenAlex
- W7203620712
- Study type
- Journal article
- Publisher
- National Academy of Sciences
- Article type
- journal-article
- Integrity
- current
Why this research matters now
Findings point to a vector-side mechanism that supports gut homeostasis after blood feeding and is exploited by T. cruzi, with potential relevance to Chagas disease transmission biology.
Structured evidence summary
Research question
The study addresses how small Heat Shock Proteins (sHSPs) in the digestive tract of the Chagas disease vector Rhodnius prolixus contribute to gut homeostasis after blood feeding and whether they are modulated by Trypanosoma cruzi infection.
Study design
Basic laboratory study combining transcriptomic profiling of first-instar nymph digestive tissues with RNA interference-based knockdown of five sHSP family members, followed by phenotypic and cellular assays in R. prolixus, with comparison to T. cruzi-infected insects.
Population and setting
First-instar nymphs of the insect vector Rhodnius prolixus, examined after blood meals and following T. cruzi infection under experimental conditions.
Main findings
Blood feeding induced high expression of five sHSPs in the digestive apparatus, whereas T. cruzi infection reduced their expression. Simultaneous silencing of all five sHSPs decreased actin network formation, disrupted peristalsis, blocked ER expansion, reduced ER-mitochondria association, raised reactive oxygen species, and triggered premature epithelial mitosis. Similar homeostatic disruption occurred during infection, and sHSP knockdown in infected insects led to higher parasite numbers.
Public-health relevance
Findings point to a vector-side mechanism that supports gut homeostasis after blood feeding and is exploited by T. cruzi, with potential relevance to Chagas disease transmission biology.
Important limitations
The abstract does not state explicit study limitations. The summary is limited to the supplied single-article abstract and metadata and would require the original paper for decision-grade interpretation.
GIDS interpretation
This is a foundational molecular biology study on a Chagas disease vector and does not, by itself, constitute or confirm a surveillance signal. Its relevance to GIDS is exploratory, relating to discoverability of vector or parasite mechanisms rather than to any active detection event.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 3 auditable classifier relationships to diseases, places, topics, and study design.