The retrovirus human T-cell leukemia virus type 1 (HTLV-1) integrates into the host DNA, achieves persistent infection, and induces human diseases. Here, we demonstrate that viral DNA-capture sequencing (DNA-capture-seq) is useful to characterize HTLV-1 proviruses in naturally virus-infected individuals, providing comprehensive information about the proviral structure and the viral integration site. We analyzed peripheral blood from 98 naturally HTLV-1-infected individuals and found that defective proviruses were present not only in patients with leukemia, but also in those with other clinical entities. We further demonstrated that clones with defective-type proviruses exhibited a higher degree of clonal abundance than those with full-length proviruses. The frequency of defective-type proviruses in HTLV-1-infected humanized mice was lower than that in infected individuals, indicating that defective proviruses were rare at the initial phase of infection but preferentially selected during persistent infection. These results demonstrate the robustness of viral DNA-capture-seq for HTLV-1 infection and suggest potential applications for other virus-associated cancers in humans.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.celrep.2019.09.016 | DOI Listing |
Orv Hetil
December 2024
3 Semmelweis Egyetem, Általános Orvostudományi Kar, Belgyógyászati és Hematológiai Klinika, Infektológiai Tanszéki Csoport Budapest Magyarország.
Mol Biol (Mosk)
December 2024
Peoples' Friendship University of Russia, Moscow, 117198 Russia.
The E6 and E7 proteins of the high risk human papillomaviruses (HR HPVs) play a key role in the oncogenesis associated with papillomavirus infection. Data on the variability of these proteins are limited, and the factors affecting their variability are still poorly understood. We analyzed the variability of the currently known sequences of the HPV type 16 (HPV16) E6 and E7 proteins, taking into account their geographic origin and year of sample collection, as well as the direction of their evolution in the major geographic regions of the world.
View Article and Find Full Text PDFJ Med Case Rep
December 2024
Department of Surgery, Aga Khan University, Karachi, Pakistan.
Background: Kaposiform hemangioendothelioma is a rare vascular tumor primarily occurring in infants and children. The most common sites for kaposiform hemangioendothelioma are extremities, with very few cases of abdominal kaposiform hemangioendothelioma reported in neonates. Making a diagnosis of Kaposiform hemangioendothelioma can be challenging when the patient presents with generalized symptoms such as bilious vomiting and constipation that can be attributed to other more common causes of intestinal obstruction.
View Article and Find Full Text PDFAntimicrob Resist Infect Control
December 2024
Infection Control Team, Queen Mary Hospital, Hong Kong West Cluster, Pokfulam, Hong Kong Special Administrative Region, China.
Background: Hand hygiene is a critical component of infection prevention in healthcare settings. Innovative strategies are required to enhance hand hygiene practices among patients and healthcare workers (HCWs).
Methods: This study was conducted at the Chemotherapy Day Center of Queen Mary Hospital, Hong Kong.
Crit Care
December 2024
Division of Anesthesia, Critical Care, Pain and Emergency Medicine, UR‑UM103 IMAGINE, University of Montpellier, Nimes University Hospital, Nîmes, France.
Background: In septic shock, the classic fluid resuscitation strategy can lead to a potentially harmful positive fluid balance. This multicenter, randomized, single-blind, parallel, controlled pilot study assessed the effectiveness of a restrictive fluid strategy aiming to limit daily volume.
Methods: Patients 18-85 years' old admitted to the ICU department of three French hospitals were eligible for inclusion if they had septic shock and were in the first 24 h of vasopressor infusion.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!